CN115680604A

CN115680604A - Sand removing manifold system for oil well

Info

Publication number: CN115680604A
Application number: CN202310000518.4A
Authority: CN
Inventors: 沈君芳; 苏雨; 刘正时; 张瑞嘉; 崔承永; 崔仁学
Original assignee: Shengli Oilfield Shengji Petroleum Equipment Co Ltd
Current assignee: Shengli Oilfield Shengji Petroleum Equipment Co Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-02-03
Anticipated expiration: 2043-01-03
Also published as: CN115680604B

Abstract

The invention provides an oil well desanding manifold system, which relates to the technical field of oil field wellhead equipment and comprises a filter pipe assembly, a filter outer pipe and a centering mechanism, wherein the filter outer pipe is arranged on the filter pipe assembly; the filtering outer pipe is sleeved outside the filtering pipe assembly, the righting mechanism can limit the filtering pipe assembly and the filtering outer pipe to be concentrically arranged, the filtering pipe assembly is connected with the filtering outer pipe through threads, and the filtering pipe assembly is provided with a clamping groove for dismounting; the filter pipe assembly filters well fluid through the filter seam and then conveys the well fluid to the inside of the circulation channel, so that the purpose of filtering the well fluid is achieved; when the filter pipe assembly needs to be cleaned, the threads between the filter pipe assembly and the filtering outer pipe are disassembled, when the filter pipe assembly is taken and conveyed, the bolt and the nut of external equipment do not need to be disassembled, the filter pipe assembly can be taken out quickly only by inserting the taking and conveying tool into the clamping groove of the filter pipe assembly, and the technical problem that the filter pipe assembly is difficult to disassemble and the overall working efficiency is influenced in the prior art is solved.

Description

Sand removing manifold system for oil well

Technical Field

The invention relates to the technical field of oilfield wellhead equipment, in particular to an oil well desanding manifold system.

Background

At present, deep well crude oil has high wax, colloid and asphaltene contents and is accompanied by sand and impurities (calcite, dolomite, barite powder and the like). At the choke manifold, when pressure reduces, block the production pipeline together gluing, cause the shut-in, seriously influence crude oil output and production efficiency, consequently can connect the degritting manifold at the well head position after crude oil gathers and filter the transport to crude oil.

In the prior art, the structure of the sand filtering manifold mainly comprises a high-pressure filtering short section, a pipeline tee joint, a pipeline five-way joint and a manual flat valve. The filter element cylinder is provided with a slit, the filter element cylinder with the slit is installed in the high-pressure filter short section, well fluid flows into the high-pressure filter short section by utilizing the five-way pipeline and the three-way pipeline, and the well fluid is filtered by utilizing the filter element cylinder in the high-pressure filter short section.

However, the filtering element cylinder of the desanding manifold in the prior art needs to be dismounted and cleaned after working for a period of time, and continuous working cannot be realized, but the high-pressure filtering short section is difficult to dismount due to the requirement of sealing installation, and the working efficiency can be influenced by frequent dismounting and cleaning; in addition, the height of the desanding manifold is often inconvenient to adjust when the desanding manifold is used on site, and the desanding manifold is not beneficial to butt joint installation of a wellhead device; simultaneously, before the filter element is disassembled, the pressure in the manifold is released, and the crude oil in the manifold can be sprayed to the ground to pollute the environment.

Disclosure of Invention

The invention aims to provide an oil well desanding manifold system to solve the technical problem that the whole working efficiency is influenced due to the difficulty in disassembling a filter pipe in the prior art.

The invention provides an oil well sand removing manifold system, which comprises: the device comprises a filter pipe assembly, a filter outer pipe and a centralizing mechanism;

one end of the filter pipe assembly is communicated with the oil well, so that well fluid in the oil well is conveyed to the interior of the filter pipe assembly;

the filtering outer pipe is sleeved outside the filtering pipe assembly, the righting mechanism is located at one end, far away from the oil well, of the filtering pipe assembly, the filtering pipe assembly is connected with the righting mechanism, the righting mechanism is used for limiting the filtering pipe assembly and the filtering outer pipe to be concentrically arranged, one end, close to the oil well, of the filtering pipe assembly is connected with the filtering outer pipe through threads, and a clamping groove used for dismounting is formed in one end, close to the oil well, of the filtering pipe assembly;

the side wall of the filtering pipe assembly is provided with a filtering seam, a circulation channel for circulating well liquid is arranged between the filtering outer pipe and the filtering pipe assembly, and the filtering pipe assembly is used for filtering the well liquid through the filtering seam and then conveying the well liquid to the inside of the circulation channel.

In a preferred embodiment of the present invention, the filter tube assembly comprises a filter tube head, a first sealing ring, a filter tube mechanism and a filter tube plug;

the filtering tube head and the filtering tube plug are respectively positioned at two ends of the filtering tube mechanism and are respectively connected with the filtering tube mechanism, the filtering tube plug is used for blocking one end of the filtering tube mechanism, which is far away from the filtering tube head, one side of the filtering tube plug, which is far away from the filtering tube mechanism, is connected with the centering mechanism, the filtering tube head, the filtering tube mechanism and the filtering tube plug are all positioned in the filtering outer tube, the filtering tube head is connected with the filtering outer tube through threads, and the clamping groove is positioned at one end of the filtering tube head, which is far away from the filtering tube plug;

the filter pipe mechanism is communicated with a wellhead device of an oil well through the filter pipe head, the first sealing ring is positioned between the filter pipe head and the outer filter pipe, and the first sealing ring is used for limiting well liquid to be conveyed to the inside of the filter pipe mechanism through the threaded connection part of the filter pipe head and the outer filter pipe;

the circulation passageway is located filter tube mechanism with filter between the outer tube, it is provided with a plurality ofly to filter the seam, and is a plurality of filter the seam along filter tube mechanism's circumferencial direction interval arrangement, filter tube mechanism is through a plurality of filter the seam will filter the well fluid after carry to in the circulation passageway.

In a preferred embodiment of the present invention, the filter tube mechanism comprises a front filter tube, a filter tube coupling and a rear filter tube;

the filter pipe head is connected with the front filter pipe, the front filter pipe is connected with the rear filter pipe through the filter pipe coupling, and one end of the rear filter pipe, which is far away from the front filter pipe, is hermetically connected with the filter pipe plug;

a plurality of filtering seams are arranged on the side walls of the front filtering pipe and the rear filtering pipe at intervals.

In the preferred embodiment of the invention, the device also comprises a tee joint and a union assembly;

the number of the tee joints is two, the two tee joints are respectively positioned at two ends of the filtering pipe assembly, the two tee joints are respectively connected with the filtering outer pipe, and the filtering pipe assembly is communicated with the oil well through the tee joints;

the union assembly is provided with two, and two union assemblies are located respectively the tee bend is kept away from the one end of filter tube assembly, the union assembly with the tee bend is connected, the three connector of tee bend communicates with the oil well respectively, filter tube assembly with the union assembly to make union assembly pass through the tee bend with the inside intercommunication of filter tube assembly.

In a preferred embodiment of the invention, the righting mechanism comprises a righting ring and a righting rod;

the righting rod is connected with the filter pipe plug, the axis of the righting rod coincides with the axis of the filter pipe mechanism, the righting ring is located inside the union assembly, the righting ring is provided with a righting hole, the circle center of the righting hole coincides with the axis of the union assembly, the axis of the filter outer pipe coincides with the axis of the righting rod, the righting rod is used for penetrating through the righting ring through the righting hole, and the righting ring is used for clamping the righting rod, so that the filter pipe mechanism and the filter outer pipe are concentrically arranged.

In a preferred embodiment of the invention, the device further comprises a pressure release assembly;

the pressure release assembly is provided with two, every the pressure release assembly is located respectively the union assembly is kept away from the one end of tee bend, the pressure release assembly with the union assembly is connected, the pressure release assembly be used for through the union assembly with the tee bend is to the inside pressure of filter tube assembly releases.

In a preferred embodiment of the present invention, the pressure relief assembly comprises a connection fitting, a shutoff valve, a ferrule fitting, and a hydraulic control line;

the one end of attach fitting with the union assembly is connected, the other end of attach fitting with the stop valve is connected, the stop valve pass through the cutting ferrule connect with the hydraulic control pipeline is connected, the hydraulic control pipeline be used for through the union assembly with the inside intercommunication of filter tube assembly, the stop valve is used for controlling the hydraulic control pipeline with the intercommunication or the closing of filter tube assembly, with through the hydraulic control pipeline is right the inside pressure of filter tube assembly releases.

In the preferred embodiment of the invention, the device also comprises a first four-way, a second four-way, a high-pressure pipeline, a discharge pipe and a plate valve;

the first cross and the second cross are respectively positioned at two ends of the high-pressure pipeline, the first cross and the second cross are respectively connected with the high-pressure pipeline, one end of the high-pressure pipeline is communicated with the oil well through the first cross, and the other end of the high-pressure pipeline is connected with the discharge pipe through the second cross;

the plate valve is provided with a plurality of, wherein, high pressure line with first cross passes through the plate valve is connected, just the discharge pipe with the second cross passes through the plate valve is connected, just one end of filter tube assembly is through one the tee bend with first cross intercommunication, in order to pass through first cross and oil well intercommunication, the tee bend with pass through between the first cross the plate valve is connected, the other end of filter tube assembly passes through another the tee bend with the second cross intercommunication, in order to pass through the second cross with the discharge pipe intercommunication, the tee bend with the second cross passes through the plate valve is connected, and is a plurality of the plate valve is used for controlling respectively the circulation route in first cross with the second cross.

In a preferred embodiment of the present invention, two sets of the filtering pipe assembly, the filtering outer pipe and the centering mechanism are provided;

the two groups of filter pipe assemblies are symmetrically arranged relative to the high-pressure pipeline, each group of filter pipe assemblies are respectively connected with the first four-way and the second four-way through the tee joints, and the two groups of filter pipe assemblies are used for respectively filtering and conveying well liquid conveyed in an oil well.

The two groups of filter pipe assemblies are communicated with the two connectors of the first four-way valve respectively through two flat valves, the flat valves are used for controlling any group of filter pipe assemblies to be communicated with the first four-way valve, the two groups of filter pipe assemblies are communicated with the two connectors of the second four-way valve respectively through two flat valves, and the flat valves are used for controlling any group of filter pipe assemblies to be communicated with the second four-way valve.

When the filter pipe assemblies in one group have more impurities, the filter pipe assemblies in the other group can be used for continuously filtering and conveying well liquid conveyed in an oil well, and the filter pipe assemblies with more impurities can be detached and cleaned.

In the preferred embodiment of the invention, the device also comprises a telescopic pipe assembly;

one end of the telescopic pipe assembly is connected with one end, far away from the high-pressure pipeline, of the first four-way joint, the other end of the telescopic pipe assembly is connected with a wellhead device of an oil well, and the telescopic pipe assembly is used for conveying oil in the oil well to the interior of the first four-way joint.

In a preferred embodiment of the present invention, the telescopic tube assembly comprises a telescopic tube mechanism and a two-way tube;

the oil well is characterized in that at least two telescopic pipe mechanisms are arranged, one end of one telescopic pipe mechanism is connected with the first four-way joint, the other end of the telescopic pipe mechanism is connected with the other telescopic pipe mechanism through the two-way joint, the other end of the telescopic pipe mechanism, which is far away from the two-way joint, is connected with an oil well, and the two-way joint is used for adjusting the angles of the telescopic pipe mechanisms, so that the first four-way joint is connected with a wellhead device of the oil well sequentially through the telescopic pipe mechanisms.

In a preferred embodiment of the present invention, the telescopic tube mechanism comprises a telescopic inner tube, a telescopic outer tube, an adjusting bolt, a back nut and a second sealing ring;

one end of the telescopic inner pipe is inserted into the telescopic outer pipe, and the telescopic inner pipe is connected with the telescopic outer pipe in a sealing mode through the second sealing ring;

adjusting bolt's one end with flexible outer tube is close to the one end fixed connection of flexible inner tube, be provided with the flange on the lateral wall of flexible inner tube, adjusting bolt's the other end runs through flexible inner tube on the flange, just back of the body lock nut is provided with a plurality ofly, and is a plurality of back of the body lock nut is located respectively the both sides of flange, it is a plurality of back of the body lock nut respectively with adjusting bolt connects, and is a plurality of back of the body lock nut is used for adjusting flexible inner tube with relative position between the flexible outer tube, in order to adjust flexible inner tube with extension length between the flexible outer tube.

In a preferred embodiment of the invention, the device further comprises a base and an adjusting leg;

the filtering outer pipe, the filtering pipe assembly, the first cross joint, the second cross joint, the high-pressure pipeline, the pressure release assembly and the discharge pipe are all arranged on the base;

the regulation landing leg is provided with a plurality ofly, and is a plurality of it all is located to adjust the landing leg one side that the base is close to ground, the base passes through adjust the landing leg and arrange in subaerially, it is used for adjusting to adjust the landing leg the height of base in vertical direction.

In a preferred embodiment of the invention, the adjusting support leg comprises a support leg inner cylinder, a support ring, a rotating mechanism, a support leg transmission stud, a support leg exchange coupling, a rotating bearing and a base;

one end of the landing leg transmission stud is inserted into the landing leg inner cylinder, the landing leg exchange coupling is positioned between the landing leg transmission stud and the landing leg inner cylinder, the landing leg exchange coupling is fixedly connected with the inner side wall of the landing leg inner cylinder, the landing leg exchange coupling is in threaded connection with the landing leg transmission stud, and the other end of the landing leg transmission stud is rotatably connected with the base through the rotating bearing;

the support ring is sleeved outside the support leg inner cylinder and is connected with the outer side wall of the support leg inner cylinder, a through hole is formed in the base, one end, far away from the base, of the support leg inner cylinder penetrates through the through hole, and the support ring is abutted to one side, close to the ground, of the base;

the rotating mechanism is connected with the supporting leg transmission stud, and the rotating mechanism is used for driving the supporting leg transmission stud to rotate relative to the base, so that the supporting leg exchange coupling drives the supporting leg inner cylinder to linearly move along the extension direction of the supporting leg transmission stud, and the height of the base in the vertical direction is adjusted through the supporting ring.

In a preferred embodiment of the invention, the adjusting leg further comprises a lock nut;

the locking nut is sleeved outside the supporting leg transmission stud and is in threaded connection with the supporting leg transmission stud, the locking nut is abutted to one end, close to the base, of the supporting leg inner cylinder, and the locking nut is used for limiting the supporting leg transmission stud to rotate relative to the base.

In the preferred embodiment of the invention, a throttle valve is also included;

the throttle valve is connected with one end of the discharge pipe, which is far away from the high-pressure pipeline, and the throttle valve is used for regulating the output flow of the discharge pipe.

The invention provides an oil well sand removing manifold system, which comprises: the device comprises a filter pipe assembly, a filter outer pipe and a righting mechanism; one end of the filter pipe assembly is communicated with the oil well, so that well fluid in the oil well is conveyed to the interior of the filter pipe assembly; the filtering outer pipe is sleeved outside the filtering pipe assembly, the centering mechanism is positioned at one end of the filtering pipe assembly, which is far away from the oil well, the filtering pipe assembly is connected with the centering mechanism, the centering mechanism is used for limiting the filtering pipe assembly to be concentrically arranged with the filtering outer pipe, one end of the filtering pipe assembly, which is close to the oil well, is connected with the filtering outer pipe through threads, and one end of the filtering pipe assembly, which is close to the oil well, is provided with a clamping groove for dismounting; the side wall of the filtering pipe assembly is provided with a filtering seam, a circulation channel for circulating well fluid is arranged between the filtering outer pipe and the filtering pipe assembly, the filtering pipe assembly filters the well fluid through the filtering seam and then conveys the well fluid to the inside of the circulation channel, so that particle impurities such as mud and sand in the well fluid cannot be left in the filtering pipe assembly through the filtering seam, and the filtered well fluid flows into the inside of the circulation channel through the filtering seam, thereby achieving the purpose of filtering the well fluid; when the filter pipe assembly needs to be cleaned, the filter pipe assembly only needs to be detached from the threads between the filter pipe assembly and the filter outer pipe, when the filter pipe assembly is taken and conveyed, the bolt and the nut of external equipment do not need to be detached, and the filter pipe assembly can be taken out quickly only by inserting the taking and conveying tool into the clamping groove of the filter pipe assembly, so that the technical problem that the filter pipe assembly is difficult to detach and the overall working efficiency is influenced in the prior art is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the overall configuration of an oil well sand removal manifold system according to an embodiment of the present invention;

FIG. 2 is a top view of a well degritting manifold system provided by an embodiment of the present invention;

FIG. 3 is an enlarged, fragmentary, schematic structural view of the well degritting manifold system provided in the embodiment of FIG. 2;

FIG. 4 is an elevation view of an oil well degritting manifold system provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a filter tube assembly of an oil well degritting manifold system according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a telescoping tube mechanism of an oil well desanding manifold system according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a pressure relief assembly of a well degritting manifold system according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of an adjusting leg of an oil well degritting manifold system according to an embodiment of the present invention.

Icon: 100-a filter tube assembly; 101-a filter slot; 102-a card slot; 103-a filter cartridge; 104-a first sealing ring; 105-a filter tube mechanism; 115-a prefilter pipe; 125-filtration tube coupling; 135-post-filtration tube; 106-filter tube stopper; 200-filtering the outer tube; 300-a righting mechanism; 301-a centralizing ring; 302-a righting bar; 400-three-way; 500-a union assembly; 600-a pressure relief assembly; 601-a connection joint; 602-a stop valve; 603-a ferrule fitting; 604-hydraulic control lines; 700-telescoping tube assembly; 701-a telescopic pipe mechanism; 711-telescoping inner tube; 721-telescoping outer tubes; 731-adjusting bolt; 741-back nut; 751-a second seal ring; 702-two-way; 800-a base; 900-adjusting support legs; 901-supporting leg inner cylinders; 902-support ring; 903-a rotating mechanism; 904-leg drive stud; 905-leg exchange coupling; 906-a rotational bearing; 907-base; 908-a lock nut; 110-a discharge pipe; 120-a plate valve; 130-a first cross; 140-a second cross; 150-high pressure line; 160-throttle valve.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

As shown in fig. 1 to 8, the present embodiment provides an oil well sand removing manifold system, including: a filter tube assembly 100, a filter outer tube 200 and a righting mechanism 300; one end of the filter tube assembly 100 is communicated with the oil well, so that well fluid in the oil well is conveyed to the interior of the filter tube assembly 100; the filtering outer pipe 200 is sleeved outside the filtering pipe assembly 100, the righting mechanism 300 is located at one end, far away from the oil well, of the filtering pipe assembly 100, the filtering pipe assembly 100 is connected with the righting mechanism 300, the righting mechanism 300 is used for limiting the filtering pipe assembly 100 and the filtering outer pipe 200 to be concentrically arranged, one end, close to the oil well, of the filtering pipe assembly 100 is connected with the filtering outer pipe 200 through threads, and one end, close to the oil well, of the filtering pipe assembly 100 is provided with a clamping groove 102 for dismounting; the side wall of the filtering pipe assembly 100 is provided with a filtering seam 101, a circulation channel for circulating the well fluid is arranged between the filtering outer pipe 200 and the filtering pipe assembly 100, and the filtering pipe assembly 100 is used for conveying the well fluid to the inside of the circulation channel after filtering through the filtering seam 101.

It should be noted that the sand removing manifold system for an oil well provided in this embodiment can communicate with a wellhead device of the oil well, after a well fluid in the oil well is conveyed to the inside of the filter tube assembly 100 through the wellhead device, the well fluid can flow along the inside of the filter tube assembly 100 under the action of its own pressure, and the well fluid can pass through the filter slits 101 on the side wall of the filter tube assembly 100 under the action of its own pressure, the filter slits 101 can filter particulate impurities such as sand and mud in the well fluid, and the filtered well fluid can enter the flow passage between the filter outer tube 200 and the filter tube assembly 100, and finally, the subsequent conveying operation is performed through the following discharge tube 110; further, since the interior of the filter tube assembly 100 and the position of the filter seam 101 need to be cleaned after the filter tube assembly 100 is used for a period of time, in this embodiment, the filter tube assembly 100 is connected to the outer filter tube 200 through a thread, preferably, the filter tube assembly 100 is connected to the outer filter tube 200 through a trapezoidal thread, in order to ensure that the filter tube assembly 100 is in threaded connection with the outer filter tube 200, the filter tube assembly 100 is in matched connection with the outer filter tube 200 through the centering mechanism 300 at a position far from the threaded connection, wherein the centering mechanism 300 can ensure that the filter tube assembly 100 and the outer filter tube 200 are concentrically arranged, and ensure that the outer filter tube 200 is in threaded connection with the filter tube assembly 100 and can be detached from each other; wherein, when needing to dismantle between filter tube assembly 100 and the filtration outer tube 200, can insert the draw-in groove 102 of filter tube assembly 100 through the instrument of delivering of getting of outside, utilize the instrument of delivering of getting to operate filter tube assembly 100 in the outside of filter tube assembly 100, avoided promptly needing to dismantle the following tee bend 400 and the bolt between the filtration outer tube 200, only need can have the instrument of delivering of getting to stretch into the open-ended of filter tube assembly 100, just can directly get and deliver to filter tube assembly 100, the dismantlement efficiency to filter tube assembly 100 has been improved, and then filtration efficiency has been improved, make the overall design more reasonable perfect.

The oil well degritting manifold system that this embodiment provided includes: a filter tube assembly 100, a filter outer tube 200 and a righting mechanism 300; one end of the filter pipe assembly 100 is communicated with the oil well, so that well fluid in the oil well is conveyed to the interior of the filter pipe assembly 100; the filtering outer pipe 200 is sleeved outside the filtering pipe assembly 100, the righting mechanism 300 is located at one end, far away from the oil well, of the filtering pipe assembly 100, the filtering pipe assembly 100 is connected with the righting mechanism 300, the righting mechanism 300 is used for limiting the filtering pipe assembly 100 and the filtering outer pipe 200 to be concentrically arranged, one end, close to the oil well, of the filtering pipe assembly 100 is connected with the filtering outer pipe 200 through threads, and one end, close to the oil well, of the filtering pipe assembly 100 is provided with a clamping groove 102 for dismounting; the side wall of the filtering pipe assembly 100 is provided with a filtering seam 101, a circulation channel for circulating well fluid is arranged between the filtering outer pipe 200 and the filtering pipe assembly 100, the filtering pipe assembly 100 filters the well fluid through the filtering seam 101 and then conveys the well fluid to the inside of the circulation channel, so that particle impurities such as mud and sand in the well fluid cannot pass through the filtering seam 101 and are remained in the filtering pipe assembly 100, the filtered well fluid flows into the circulation channel through the filtering seam 101, and the purpose of filtering the well fluid is achieved; when the filter pipe assembly 100 needs to be cleaned, only the threads between the filter pipe assembly 100 and the filtering outer pipe 200 need to be disassembled, when the filter pipe assembly 100 is taken out and conveyed, bolts and nuts of external equipment do not need to be disassembled, and the filter pipe assembly 100 can be quickly taken out only by inserting a taking and conveying tool into the clamping groove 102 of the filter pipe assembly 100, so that the technical problems that the filter pipe is difficult to disassemble and the overall working efficiency is influenced in the prior art are solved.

Further, in the preferred embodiment of the present invention, the filter tube assembly 100 includes a filter tube head 103, a first sealing ring 104, a filter tube mechanism 105 and a filter tube stopper 106; the filtering pipe head 103 and the filtering pipe plug 106 are respectively positioned at two ends of the filtering pipe mechanism 105, the filtering pipe head 103 and the filtering pipe plug 106 are respectively connected with the filtering pipe mechanism 105, the filtering pipe plug 106 is used for blocking one end of the filtering pipe mechanism 105 far away from the filtering pipe head 103, one side of the filtering pipe plug 106 far away from the filtering pipe mechanism 105 is connected with the righting mechanism 300, the filtering pipe head 103, the filtering pipe mechanism 105 and the filtering pipe plug 106 are all positioned inside the filtering outer pipe 200, the filtering pipe head 103 is connected with the filtering outer pipe 200 through threads, and the clamping groove 102 is positioned at one end of the filtering pipe head 103 far away from the filtering pipe plug 106; the filter pipe mechanism 105 is communicated with a wellhead device of an oil well through the filter pipe head 103, the first sealing ring 104 is positioned between the filter pipe head 103 and the outer filter pipe 200, and the first sealing ring 104 is used for limiting well liquid to be conveyed to the interior of the filter pipe mechanism 105 through the threaded connection part of the filter pipe head 103 and the outer filter pipe 200; the circulation channel is located between the filtering pipe mechanism 105 and the filtering outer pipe 200, the filtering slits 101 are provided in a plurality, the filtering slits 101 are arranged at intervals along the circumferential direction of the filtering pipe mechanism 105, and the filtering pipe mechanism 105 conveys the filtered well fluid into the circulation channel through the filtering slits 101.

In this embodiment, two ends of the filtering pipe mechanism 105 are open structures, wherein one end of the filtering pipe mechanism 105 is hermetically connected with the filtering pipe plug 106, that is, one end of the filtering pipe mechanism 105 forms a closed structure through the filtering pipe plug 106, and the other end of the filtering pipe mechanism 105 is fixedly connected with the filtering pipe head 103, wherein the filtering pipe mechanism 105 and the filtering pipe head 103 can be integrally formed and can also be fixedly connected through a coupling structure, the filtering pipe head 103 can be located at one end close to a wellhead, that is, the filtering pipe mechanism 105 receives well fluid through the filtering pipe head 103, the well fluid is conveyed to the filtering pipe mechanism 105 through the filtering pipe head 103, a plurality of filtering slits 101 are arranged at intervals in the circumferential direction of the filtering pipe mechanism 105, the filtering outer pipe 200 is sleeved outside the filtering pipe head 103, the filtering pipe mechanism 105 and the filtering pipe plug 106, a flow passage is provided between the filtering outer pipe 200 and the filtering pipe mechanism 105, and the filtering slit 101 of the filtering pipe mechanism 105 can filter the well fluid flowing through the filtering pipe mechanism 105, thereby achieving the purpose of filtering the well fluid.

Optionally, the first sealing rings 104 may be provided with a plurality of, the first sealing rings 104 may be O-rings, and the first sealing rings 104 are located at the end of the filtering tube head 103 and the end of the filtering outer tube 200 close to the wellhead, so that when well fluid is filtered, the unfiltered well fluid can be prevented from permeating into the filtering outer tube 200 through the trapezoidal threads, and the threads are protected.

Further, the outer diameter of the filter tube head 103 may be greater than the outer diameter of the filter tube mechanism 105, and the outer diameter of the filter tube head 103 fits the inner diameter of the outer filter tube 200, the filter tube head 103 may be connected to the outer filter tube 200 via a trapezoidal thread, and the end of the filter tube stopper 106 away from the filter tube mechanism 105 is connected to the centering mechanism 300, and the centering mechanism 300 may ensure that the filter tube mechanism 105, the filter tube head 103, and the outer filter tube 200 are concentrically disposed, thereby ensuring the thread sealing connection between the filter tube head 103 and the outer filter tube 200.

In the preferred embodiment of the present invention, filter tube mechanism 105 comprises a pre-filter tube 115, a filter tube collar 125, and a post-filter tube 135; the filter tube head 103 is connected with the front filter tube 115, the front filter tube 115 is connected with the rear filter tube 135 through the filter tube coupling 125, and one end of the rear filter tube 135 far away from the front filter tube 115 is hermetically connected with the filter tube plug 106; a plurality of filter slots 101 are arranged on the side walls of the front filter pipe 115 and the rear filter pipe 135 at intervals.

It should be noted that, because the length of the filter pipe mechanism 105 is longer in the wellhead field device, in order to ensure that the filter pipe mechanism 105 is more convenient and faster in the disassembling and cleaning process, when the filter pipe mechanism 105 is taken out for cleaning, the filter pipe coupling 125 can be disassembled to respectively clean the front filter pipe 115 and the rear filter pipe 135, which is easy to clean the filter pipe mechanism 105.

In the preferred embodiment of the present invention, it further comprises a tee 400 and a union assembly 500; the number of the tee joints 400 is two, the two tee joints 400 are respectively positioned at two ends of the filtering pipe assembly 100, the two tee joints 400 are respectively connected with the filtering outer pipe 200, and the filtering pipe assembly 100 is communicated with the oil well through the tee joints 400; the union assembly 500 is provided with two union assemblies 500, the two union assemblies 500 are respectively positioned at one end of the tee 400 far away from the filter pipe assembly 100, the union assembly 500 is connected with the tee 400, and three connecting ports of the tee 400 are respectively communicated with the oil well, the filter pipe assembly 100 and the union assembly 500, so that the union assembly 500 is communicated with the interior of the filter pipe assembly 100 through the tee 400.

In this embodiment, for one filter tube assembly 100, a tee 400 is disposed between the filter tube assembly 100 and a wellhead, wherein three connectors of the tee 400 can be respectively communicated with an oil well, the filter tube assembly 100 and a union assembly 500, wherein the union assembly 500 can be located at one end of the tee 400 far from the filter tube assembly 100, when the filter tube assembly 100 needs to be disassembled, the union assembly 500 only needs to be disassembled from the tee 400, and then the union assembly extends into the filter tube assembly 100 by using a taking and conveying tool, and the filter tube assembly 100 is taken out after the taking and conveying tool drives the filter tube assembly 100 to be separated from the outer filter tube 200 by threads; in addition, another tee 400 is arranged between the filtering pipe assembly 100 and a discharge pipe 110 described below, wherein three connection ports of the tee 400 are respectively communicated with the filtering outer pipe 200, the union assembly 500 and the discharge pipe 110, namely, the tee 400 is communicated with a flow passage between the filtering outer pipe 200 and the filtering pipe assembly 100, and the filtered well fluid can be conveyed to the position of the discharge pipe 110 by the tee 400.

As shown in fig. 3, in the preferred embodiment of the present invention, the centering mechanism 300 includes a centering ring 301 and a centering rod 302; the righting rod 302 is connected with the filter pipe plug 106, the axis of the righting rod 302 coincides with the axis of the filter pipe mechanism 105, the righting ring 301 is located inside the union assembly 500, the righting ring 301 is provided with a righting hole, the circle center of the righting hole coincides with the axis of the union assembly 500, the axis of the filter outer pipe 200 coincides with the axis of the righting rod 302, the righting rod 302 is used for penetrating through the righting ring 301 through the righting hole, and the righting ring 301 is used for clamping the righting rod 302, so that the filter pipe mechanism 105 and the filter outer pipe 200 are concentrically arranged.

In this embodiment, one end of the righting rod 302, which is far from the filter tube plug 106, has a tip, and the righting rod 302 coincides with the axis of the filter tube mechanism 105, and after the righting rod 302 extends into the righting ring 301, the righting rod 302 makes the filter tube mechanism 105 and the outer filter tube 200 concentrically arranged under the limiting action of the righting ring 301, so as to ensure the threaded connection between the filter tube head 103 and the outer filter tube 200.

As shown in fig. 7, in the preferred embodiment of the present invention, a pressure relief assembly 600 is further included; the number of the pressure release assemblies 600 is two, each pressure release assembly 600 is located at one end of the union assembly 500 far away from the tee joint 400, the pressure release assembly 600 is connected with the union assembly 500, and the pressure release assembly 600 is used for releasing the pressure inside the filter pipe assembly 100 through the union assembly 500 and the tee joint 400.

In the preferred embodiment of the present invention, the pressure relief assembly 600 includes a connection fitting 601, a stop valve 602, a ferrule fitting 603, and a pilot operated line 604; one end of the connecting joint 601 is connected to the union assembly 500, the other end of the connecting joint 601 is connected to the stop valve 602, the stop valve 602 is connected to the hydraulic control line 604 through the ferrule joint 603, the hydraulic control line 604 is used for communicating with the interior of the filter tube assembly 100 through the union assembly 500, and the stop valve 602 is used for controlling the communication or closing of the hydraulic control line 604 and the filter tube assembly 100, so as to release the pressure inside the filter tube assembly 100 through the hydraulic control line 604.

In this embodiment, when the filtering pipe assembly 100 and the filtering outer pipe 200 are used for filtering and conveying well fluid, pressure is present in the filtering pipe assembly 100 and the flow channel, so before the filtering pipe assembly 100 is cleaned, the pressure in the filtering pipe assembly 100 can be released by opening the stop valve 602, the operation safety is ensured, and meanwhile, released crude oil is collected through the hydraulic control pipeline 604 and the connecting joint 601, so that environmental pollution is prevented, and the purpose of environmental protection is achieved.

In the preferred embodiment of the present invention, it further comprises a first cross 130, a second cross 140, a high pressure pipeline 150, a discharge pipe 110 and a plate valve 120; the first cross 130 and the second cross 140 are respectively positioned at two ends of a high-pressure pipeline 150, the first cross 130 and the second cross 140 are respectively connected with the high-pressure pipeline 150, one end of the high-pressure pipeline 150 is communicated with an oil well through the first cross 130, and the other end of the high-pressure pipeline 150 is connected with the discharge pipe 110 through the second cross 140; the plate valve 120 is provided in plurality, wherein the high pressure pipeline 150 is connected to the first four-way 130 through the plate valve 120, the discharge pipe 110 is connected to the second four-way 140 through the plate valve 120, one end of the filter pipe assembly 100 is communicated with the first four-way 130 through a three-way 400 to communicate with the oil well through the first four-way 130, the three-way 400 is connected to the first four-way 130 through the plate valve 120, the other end of the filter pipe assembly 100 is communicated with the second four-way 140 through another three-way 400 to communicate with the discharge pipe 110 through the second four-way 140, the three-way 400 is connected to the second four-way 140 through the plate valve 120, and the plate valves 120 are used to control the flow paths in the first four-way 130 and the second four-way 140, respectively.

In this embodiment, when the filter tube assembly 100 filters and conveys the high-pressure pipeline 150, the high-pressure pipeline 150 is in a completely closed state, and as long as the conveying of the filter tube assembly 100 and the filter outer tube 200 is in a problem, the flat valves 120 at two ends of the high-pressure pipeline 150 can be opened in time, so that the well fluid can be discharged in time, and the imbalance of the well fluid pressure is avoided.

In the preferred embodiment of the present invention, a throttle valve 160 is further included; a throttle valve 160 is connected to an end of the discharge pipe 110 away from the high pressure line 150, the throttle valve 160 being used to regulate the output flow of the discharge pipe 110; by installing the throttle valve 160 at the outlet of the discharge pipe 110, the well fluid flows into the throttle valve 160 after being filtered, so that secondary throttling can be effectively realized, and the integral steady-flow operation of the desanding manifold system can be ensured.

In the preferred embodiment of the present invention, two sets of the filtering pipe assembly 100, the filtering outer pipe 200 and the centering mechanism 300 are provided; the two groups of filter pipe assemblies 100 are symmetrically arranged relative to the high-pressure pipeline 150, each group of filter pipe assemblies 100 are respectively connected with the first cross 130 and the second cross 140 through the tee 400, and the two groups of filter pipe assemblies 100 are used for respectively filtering and conveying well liquid conveyed in an oil well; when the impurity in one group of filter tube assembly 100 is more, another group of filter tube assembly 100 can be used for continuously filtering and conveying the well fluid conveyed in the oil well, and the filter tube assembly 100 with more impurity can be detached and cleaned.

In this embodiment, the two connection ports of the two sets of filtering pipe assemblies 100 and the first four-way joint 130 are respectively communicated through two flat valves 120, the flat valves 120 are used for controlling the filtering pipe assemblies 100 of any one set to be communicated with the first four-way joint 130, the two connection ports of the two sets of filtering pipe assemblies 100 and the second four-way joint 140 are respectively communicated through the two flat valves 120, and the flat valves 120 are used for controlling the filtering pipe assemblies 100 of any one set to be communicated with the second four-way joint 140.

Specifically, the two groups of filter tube assemblies 100, the two groups of filter tube assemblies 400, the union assembly 500 and the pressure release assembly 600 are symmetrically arranged relative to the high-pressure pipeline 150, by utilizing the two groups of filter tube assemblies 100 and the flat valves 120 arranged at the four connection port positions of the four-way, after the well fluid is conveyed into the four-way, the flat valves 120 of the four-way and the high-pressure pipeline 150 and the three-way 400 of the four-way and one of the filter tube assemblies 100 are in a closed state, only the four-way is in a communication state with the three-way 400 of the other filter tube assembly 100, namely, the well fluid is filtered and conveyed through one of the filter tube assemblies 100 and the outer filter tube 200, when impurities in one of the filter tube assemblies 100 are excessive, the flat valves 120 at the four-way position are required to be taken out for cleaning, the flat valves 120 between the filter tube assembly 100 required to be cleaned and the four-way are closed, the flat valves 120 between the other group of filter tube assemblies 100 and the four-way are opened, so that the other group of filter tube assemblies 100 and the outer filter tube assembly 200 can be used for filtering and conveying the well fluid, thereby ensuring that the well head position can work continuously and improving the efficiency of the well fluid can be filtered; it should be noted that, since the two sets of filter tube assemblies 100, tee 400, union assembly 500 and pressure relief assembly 600 have the same structure, only one set of filter tube assembly 100, tee 400, union assembly 500 and pressure relief assembly 600 is written herein.

In the preferred embodiment of the present invention, a telescopic tube assembly 700 is further included; one end of the telescopic pipe assembly 700 is connected with one end of the first cross 130 far away from the high-pressure pipeline 150, the other end of the telescopic pipe assembly 700 is connected with a wellhead device of an oil well, and the telescopic pipe assembly 700 is used for conveying oil liquid in the oil well to the inside of the first cross 130. When the desanding manifold is connected with a wellhead device, because the heights of all oil wells are different, the flexible pipe assembly 700 is designed at the inlet of the desanding manifold, and the desanding manifold and the wellhead device are easy to butt joint and install by adjusting the flexible pipe assembly 700.

As shown in FIG. 1, in the preferred embodiment of the present invention, the telescoping tube assembly 700 includes a telescoping tube mechanism 701 and a two-way 702; the number of the telescopic pipe mechanisms 701 is at least two, one end of one telescopic pipe mechanism 701 is connected with the first four-way joint 130, the other end of the telescopic pipe mechanism 701 is connected with the other telescopic pipe mechanism 701 through a two-way joint 702, one end, far away from the two-way joint 702, of the other telescopic pipe mechanism 701 is connected with an oil well, and the two-way joint 702 is used for adjusting the angles of the plurality of telescopic pipe mechanisms 701, so that the first four-way joint 130 is connected with a wellhead device of the oil well sequentially through the telescopic pipe mechanisms 701.

In this embodiment, the filtering pipe assembly 100 and the filtering outer pipe 200 are both arranged horizontally, but the heights of each oil well are different, that is, one of the telescopic pipe mechanisms 701 is connected with the inlet end of the first four-way joint 130, at this time, the telescopic pipe mechanism 701 is arranged horizontally, the other telescopic pipe mechanism 701 is connected with the horizontally arranged telescopic pipe mechanism 701 through the two-way joint 702, the two-way joint 702 can change the communication direction of the telescopic pipe mechanisms 701, that is, the other telescopic pipe mechanism 701 is arranged vertically, so that the wellhead device can be connected with the first four-way joint 130 through the at least two telescopic pipe mechanisms 701, and the mechanical connection between the wellhead device and the filtering pipe assembly 100 is ensured.

Alternatively, when the extended height of one telescoping tube mechanism 701 cannot meet the height of the oil well, the connection of the filter pipe assembly 100 and the wellhead can be met by adopting a plurality of telescoping tube mechanisms 701 connected in sequence.

As shown in fig. 6, in the preferred embodiment of the present invention, the telescopic tube mechanism 701 includes a telescopic inner tube 711, a telescopic outer tube 721, an adjusting bolt 731, a back nut 741 and a second sealing ring 751; one end of the telescopic inner tube 711 is inserted into the telescopic outer tube 721, and the telescopic inner tube 711 and the telescopic outer tube 721 are connected in a sealing manner through a second sealing ring 751; one end of the adjusting bolt 731 is fixedly connected with one end of the telescopic outer tube 721 close to the telescopic inner tube 711, a flange is arranged on the outer side wall of the telescopic inner tube 711, the other end of the adjusting bolt 731 penetrates through the flange of the telescopic inner tube 711, the back-tightening nuts 741 are provided in a plurality, the back-tightening nuts 741 are respectively located on two sides of the flange, the back-tightening nuts 741 are respectively connected with the adjusting bolt 731, the back-tightening nuts 741 are used for adjusting the relative position between the telescopic inner tube 711 and the telescopic outer tube 721, and therefore the extension length between the telescopic inner tube 711 and the telescopic outer tube 721 is adjusted.

In this embodiment, the telescopic inner tube 711 and the telescopic outer tube 721 are in a sliding state, that is, one end of the telescopic inner tube 711 extends into the telescopic outer tube 721, wherein one end of the telescopic outer tube 721 close to the telescopic inner tube 711 is fixedly connected with the adjusting bolt 731, the extension length of the adjusting bolt 731 is less than the length of the telescopic inner tube 711 extending into the telescopic outer tube 721, a flange is disposed on the outer side wall of the telescopic inner tube 711, one end of the adjusting bolt 731 away from the telescopic outer tube 721 can penetrate through the connecting hole of the flange, back nuts 741 are disposed on two sides of the flange respectively, optionally, a plurality of adjusting bolts 731 are disposed, a plurality of adjusting bolt 731 evenly arranges along the circumferencial direction of adjusting the flange, and the back nut 741 that is located each side of flange all is provided with a plurality ofly, a plurality of back nuts 741 arrange along the circumferencial direction interval of flange, the threaded connection position between back nut 741 and the adjusting bolt 731 of adjusting the flange both sides, thereby can adjust the degree of depth that flexible inner tube 711 stretches into at flexible outer tube 721, and then can adjust the holistic extension length of flexible outer tube 721 and flexible inner tube 711, cross and filter tube assembly 100 have been guaranteed, filter outer tube 200 can move in horizontal direction and vertical direction, easily whole degritting manifold and the butt joint installation of wellhead assembly.

As shown in fig. 8, in the preferred embodiment of the present invention, it further comprises a base 800 and an adjusting leg 900; the filtering outer pipe 200, the filtering pipe assembly 100, the first cross 130, the second cross 140, the high-pressure pipeline 150, the pressure release assembly 600 and the discharge pipe 110 are all arranged on the base 800; the adjusting supporting legs 900 are provided in a plurality of numbers, the adjusting supporting legs 900 are all located on one side, close to the ground, of the base 800, the base 800 is arranged on the ground through the adjusting supporting legs 900, and the adjusting supporting legs 900 are used for adjusting the height of the base 800 in the vertical direction.

In the preferred embodiment of the present invention, the adjusting leg 900 comprises a leg inner cylinder 901, a support ring 902, a rotating mechanism 903, a leg drive stud 904, a leg exchange collar 905, a rotating bearing 906 and a base 907; one end of the supporting leg transmission stud 904 is inserted into the supporting leg inner cylinder 901, a supporting leg exchange coupling 905 is positioned between the supporting leg transmission stud 904 and the supporting leg inner cylinder 901, the supporting leg exchange coupling 905 is fixedly connected with the inner side wall of the supporting leg inner cylinder 901, the supporting leg exchange coupling 905 is in threaded connection with the supporting leg transmission stud 904, and the other end of the supporting leg transmission stud 904 is rotatably connected with the base 907 through a rotating bearing 906; the support ring 902 is sleeved outside the support leg inner cylinder 901, the support ring 902 is connected with the outer side wall of the support leg inner cylinder 901, the base 800 is provided with a through hole, one end of the support leg inner cylinder 901, which is far away from the base 907, penetrates through the through hole, and the support ring 902 is abutted against one side of the base 800, which is close to the ground; the rotating mechanism 903 is connected with the leg transmission stud 904, and the rotating mechanism 903 is configured to drive the leg transmission stud 904 to rotate relative to the base 907, so that the leg exchange collar 905 drives the leg inner cylinder 901 to move linearly along the extending direction of the leg transmission stud 904, so as to adjust the height of the base 800 in the vertical direction through the support ring 902.

In this embodiment, the base 800 is a mounting plate, wherein the desanding manifold portions are all disposed on the plane of the base 800, and the base 800 can be fixed on the ground by adjusting the supporting legs 900; the ground at the position of a wellhead can have an uneven plane, in order to ensure that the plane of the base 800 is in a horizontal state, at least four adjusting supporting legs 900 are arranged, the four adjusting supporting legs 900 are installed along four fixed angular positions of the base 800, wherein the supporting leg inner cylinder 901 can adopt a cylinder structure with openings at two ends, a supporting ring 902 is fixed on the outer side wall of one end of the supporting leg inner cylinder 901, when the supporting leg inner cylinder 901 penetrates through a through hole of the base 800, the supporting ring 902 abuts against the surface of the base 800, the supporting leg transmission stud 904 extends into the supporting leg inner cylinder 901, the supporting leg transmission stud 904 can be connected with the inner surface of the supporting leg inner cylinder 901 in a threaded fit mode through a supporting leg exchange collar 905, the supporting leg exchange collar 905 is fixedly connected with the inner surface of the supporting leg inner cylinder 901, the other end of the supporting leg transmission stud 904 is connected with a base 907 through a rotating shaft bearing, the base 907 can be arranged on the ground, when a rotating mechanism 903 drives the supporting leg transmission stud 904 to rotate relative to the base 907, the supporting leg transmission stud 904 can rotate along the inner threads of the supporting leg exchange collar 905, and the supporting leg exchange collar 905 can linearly move along the extending direction of the supporting leg exchange collar 905, so that the height of the supporting leg 800 in the vertical direction can be adjusted through the supporting ring 902.

Optionally, the rotating mechanism 903 may include a leg rocker and a leg rotation cap, the leg rotation cap is sleeved outside the leg transmission stud 904, and is fixedly connected to the leg rotation cap and the leg transmission stud 904, the leg rocker is vertically disposed on the outer side wall of the leg rotation cap, and the leg rocker is fixedly connected to the outer side wall of the leg rotation cap, and is used to drive the leg transmission stud 904 to rotate by holding the position of the leg rocker by hand.

In the preferred embodiment of the present invention, the adjustment leg 900 further includes a lock nut 908; the lock nut 908 is sleeved outside the leg transmission stud 904, the lock nut 908 is in threaded connection with the leg transmission stud 904, the lock nut 908 is abutted against one end, close to the base 907, of the leg inner barrel 901, and the lock nut 908 is used for limiting rotation of the leg transmission stud 904 relative to the base 907.

In this embodiment, the lock nut 908 may control the rotation of the leg transmission stud 904, thereby ensuring the overall stability of the base 800; furthermore, the adjusting leg 900 further comprises a protecting cover and a bearing gland, the protecting cover is positioned at one end of the leg inner cylinder 901 far away from the base 907, and the protecting cover is connected with the leg inner cylinder 901; a bearing gland is provided at one end of the base 907 adjacent to the leg inner barrel 901 and is used to constrain the slew bearing 906 within the base 907.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil well degritting manifold system, comprising: the device comprises a filter pipe assembly, a filter outer pipe and a centralizing mechanism;

the filtering outer pipe is sleeved outside the filtering pipe assembly, the righting mechanism is located at one end, far away from the oil well, of the filtering pipe assembly, the filtering pipe assembly is connected with the righting mechanism, the righting mechanism is used for limiting the filtering pipe assembly to be concentrically arranged with the filtering outer pipe, one end, close to the oil well, of the filtering pipe assembly is connected with the filtering outer pipe through threads, and one end, close to the oil well, of the filtering pipe assembly is provided with a clamping groove for dismounting;

the side wall of the filtering pipe assembly is provided with a filtering seam, a circulation channel for circulating well liquid is arranged between the filtering outer pipe and the filtering pipe assembly, and the filtering pipe assembly is used for filtering the well liquid through the filtering seam and then conveying the well liquid to the inside of the circulation channel;

the filter pipe assembly comprises a filter pipe head, a first sealing ring, a filter pipe mechanism and a filter pipe plug;

the filter tube head and the filter tube plug are respectively positioned at two ends of the filter tube mechanism, the filter tube head and the filter tube plug are respectively connected with the filter tube mechanism, the filter tube plug is used for blocking one end, far away from the filter tube head, of the filter tube mechanism, one side, far away from the filter tube mechanism, of the filter tube plug is connected with the centering mechanism, the filter tube head, the filter tube mechanism and the filter tube plug are all positioned inside the filter outer tube, the filter tube head is connected with the filter outer tube through threads, and the clamping groove is positioned at one end, far away from the filter tube plug, of the filter tube head;

2. The oil well degritting manifold system of claim 1, wherein said filter tube mechanism comprises a front filter tube, a filter tube collar, and a rear filter tube;

the filter tube head is connected with the front filter tube, the front filter tube is connected with the rear filter tube through the filter tube coupling, and one end of the rear filter tube, which is far away from the front filter tube, is hermetically connected with the filter tube plug;

3. The oil well degritting manifold system of claim 1, further comprising a tee, a union assembly, a first cross, a second cross, a high pressure line, a discharge pipe, and a plate valve;

the number of the tee joints is two, the two tee joints are respectively positioned at two ends of the filtering pipe assembly, the two tee joints are respectively connected with the filtering outer pipe, and the filtering pipe assembly is communicated with an oil well through the tee joints;

the number of the union assemblies is two, the two union assemblies are respectively positioned at one end of the tee joint, which is far away from the filter pipe assembly, the union assemblies are connected with the tee joint, and three connecting ports of the tee joint are respectively communicated with the oil well, the filter pipe assembly and the union assemblies, so that the union assemblies are communicated with the interior of the filter pipe assembly through the tee joint;

4. The oil well degritting manifold system of claim 3, wherein the centralizing mechanism comprises a centralizing ring and a centralizing rod;

the righting rod is connected with the filter pipe plug, the axis of the righting rod coincides with the axis of the filter pipe mechanism, the righting ring is located inside the union oil assembly, the righting ring is provided with a righting hole, the circle center of the righting hole coincides with the axis of the union oil assembly, the axis of the filter outer pipe coincides with the axis of the righting rod, the righting rod is used for penetrating through the righting ring through the righting hole, and the righting ring is used for clamping the righting rod, so that the filter pipe mechanism and the filter outer pipe are concentrically arranged.

5. A well degritting manifold system according to claim 3, further comprising a pressure relief assembly;

the two pressure release assemblies are arranged, each pressure release assembly is respectively located at one end, far away from the tee joint, of the union assembly, the pressure release assemblies are connected with the union assembly, and the pressure release assemblies are used for releasing the pressure inside the filter pipe assembly through the union assembly and the tee joint;

the pressure release assembly comprises a connecting joint, a stop valve, a clamping sleeve joint and a hydraulic control pipeline;

6. The oil well degritting manifold system of claim 3, wherein there are two sets of said filter tube assembly, outer filter tube and said centralizer mechanism;

7. The oil well degritting manifold system of claim 3, further comprising a telescoping tube assembly;

8. The oil well degritting manifold system of claim 7, wherein said telescoping tube assembly comprises a telescoping tube mechanism and a two-way;

9. The oil well degritting manifold system of claim 8, wherein said telescoping tube mechanism comprises a telescoping inner tube, a telescoping outer tube, an adjusting bolt, a back nut, and a second seal ring;

10. The oil well degritting manifold system of claim 7, further comprising a base and an adjustment leg;

the filtering outer pipe, the filtering pipe assembly, the first cross joint, the second cross joint, the high-pressure pipeline and the discharge pipe are all arranged on the base;

the plurality of adjusting support legs are arranged and are positioned on one side, close to the ground, of the base, the base is arranged on the ground through the adjusting support legs, and the height of the base in the vertical direction is adjusted through the adjusting support legs;

the adjusting support leg comprises a support leg inner cylinder, a support ring, a rotating mechanism, a support leg transmission stud, a support leg exchange coupling, a rotating bearing and a base;

the support ring is sleeved outside the support leg inner cylinder and is connected with the outer side wall of the support leg inner cylinder, a through hole is formed in the base, one end, far away from the base, of the support leg inner cylinder penetrates through the through hole, and the support ring is abutted against one side, close to the ground, of the base;

11. A well degritting manifold system according to any of claims 3-10, further comprising a choke valve;

the throttle valve is connected with one end of the discharge pipe, which is far away from the high-pressure pipeline, and the throttle valve is used for adjusting the output flow of the discharge pipe.