CN214365881U

CN214365881U - Double-acting hydraulic pressurizer

Info

Publication number: CN214365881U
Application number: CN202022702707.0U
Authority: CN
Inventors: 胡波; 王鸿远; 西佐伟; 张之悦; 陈云; 王岳
Original assignee: Shandong Weichuang Petroleum Technology Co ltd; Sichuan Weichuang Petroleum Equipment Manufacturing Co ltd
Current assignee: Shandong Weichuang Petroleum Technology Co ltd; Sichuan Weichuang Petroleum Equipment Manufacturing Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-10-08
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a double-acting hydraulic pressurizer for solve the problem of serious jump drilling. The utility model discloses a shell, the upper end of shell is connected with the top connection, the outer shell cover is equipped with the dabber, the cover is equipped with the center tube in the hole of top connection, the lower extreme of center tube stretches into the inside of shell and has the inner wall big footpath section that is used for with the shell of sealing up each other, the inner wall of shell, the lower terminal surface and the center tube of top connection form first cavity, be provided with the cover in the first cavity and establish the outlying dish spring of path section at the center tube. The utility model provides a weight on bit exert with jump the difficult problem of boring, improved the atress condition of drill bit, give a flexible, invariable thrust of drill bit to protect the drill bit, improve the mechanical drilling speed, have the effect of bumper shock absorber simultaneously concurrently, play constant weight on bit, absorbing dual function, further protected the drill bit, reduced drilling tool safety risk.

Description

Double-acting hydraulic pressurizer

Technical Field

The utility model belongs to the technical field of the float valve, concretely relates to two effect water conservancy pressor.

Background

The hydraulic pressurizer is a downhole tool applied to operations such as well drilling, well repairing and the like, is a conversion device, and is a well drilling technology for converting hydraulic pressure energy into bit pressure by using circulating pump pressure as power, and rigid pressurization given to a drill bit or other tools by a drill collar is changed into hydraulic flexible pressurization, so that various defects of rigid pressurization are overcome, and high speed and high quality are achieved. The objective of low cost drilling. Particularly, when the drilling tool drills in a stratum with severe geological conditions, the drilling tool can jump up and down along with the rotation of the drill bit, and the whole drilling tool can generate synchronous up-and-down vibration along with the up-and-down jumping of the drill bit due to the fact that the drill string is directly connected with the drill bit, so that large force is generated and repeatedly applied to the drill bit, and the drill bit is damaged by impact. Meanwhile, large stress waves are generated in the drill string, so that the drill string is damaged due to fatigue, and severe jump drilling can also affect a hook, a water tap, well mouth equipment and the like, so that when a stratum with severe geological conditions is drilled, low drilling pressure and low rotating speed are forced to be adopted for drilling, the drilling footage and the drilling benefit are reduced, and hydraulic pressurization is the best choice for improving the drilling footage and obtaining better economic benefit.

The hydraulic pressurizer adopts drilling mud as a damping element, the three-level piston is used for absorbing the vertical vibration of the drill bit, when the pump is started for circulation, pressure drop is formed inside the hydraulic pressurizer, and the thrust formed by pressure drop acting force pushes the piston to move downwards until the stroke is finished.

With the further development of petroleum, more and more directional wells and horizontal wells are applied to the petroleum drilling technology, cluster wells and branch wells are even adopted in partial areas, the well body design saves the cost for drilling, the well can drill to the designed target position better and more accurately, the oil and gas exploitation efficiency and the yield are improved, and meanwhile, the complex well body structure also brings high difficulty to the drilling technology, such as the application of drilling pressure and the vibration and suppressing of a drill bit.

In part of geological layers with poor drillability, serious tripping is another difficult problem troubling drilling, and brings considerable safety hazards and drilling efficiency to well structures and surface equipment.

Disclosure of Invention

Based on above technical problem, the utility model provides a two effect hydraulic pressure wares can realize stabilizing the flexible pressurization for the drill bit and alleviate the function that the drill bit drilling tool was suppressed out and is jumped at the well drilling in-process, has compensatied the limitation of traditional bumper shock absorber or presser unilateral effect.

For solving the above technical problem, the utility model discloses a technical scheme as follows:

the utility model provides a two effect water conservancy pressurizers, includes the shell, the upper end of shell is connected with the top connection, the shell cover is equipped with the dabber, a serial communication port, the cover is equipped with the center tube in the hole of top connection, the lower extreme of center tube stretches into the inside of shell and has the big footpath section that is used for with the inner wall mutual sealing of shell, the inner wall of shell, the lower terminal surface and the center tube of top connection form first cavity, be provided with the cover in the first cavity and establish the outlying dish spring of path section at the center tube.

In some embodiments, the inner wall of the shell is provided with a limiting step for limiting the descending position of the central tube.

In some embodiments, a seal is disposed between the small diameter section of the base pipe and the upper joint and between the large diameter section of the base pipe and the inner wall of the housing such that the first cavity is a sealed cavity.

In some embodiments, the first cavity is filled with lubricating oil for lubricating the disc spring.

In some embodiments, the outer shell comprises an upper cylinder sleeve, a middle cylinder sleeve and a lower cylinder sleeve which are connected in sequence from top to bottom, the upper joint is connected on the upper cylinder sleeve, the mandrel comprises an upper mandrel and a lower mandrel which are connected with each other, the upper end of the upper mandrel extends into the upper cylinder sleeve and is provided with an enlarged head section which is used for sealing with the inner wall of the upper cylinder sleeve or the upper end of the upper mandrel extends into the upper cylinder sleeve and is connected with an upper piston which is used for sealing with the inner wall of the upper cylinder sleeve, the lower end of the upper mandrel penetrates through the upper cylinder sleeve to extend into the middle cylinder sleeve and is connected with the lower mandrel, a second cavity is formed among the outer wall of the upper mandrel, the inner wall of the upper cylinder sleeve, the step surface of the inner hole of the upper cylinder sleeve and the lower end surface of the enlarged head section or the upper piston which extend into the upper cylinder sleeve, and the circumferential wall of the upper cylinder sleeve is provided with at least one first side hole communicated with the second cavity.

In some embodiments, the upper cylinder sleeve is provided with at least 2 first side holes, and each first side hole is uniformly distributed on the upper cylinder sleeve and communicated with the second cavity.

In some embodiments, the upper end of the lower mandrel extends into the middle cylinder sleeve and is connected with a lower piston used for sealing with the inner wall of the middle cylinder sleeve, the lower end of the lower mandrel penetrates out of the middle cylinder sleeve and extends out of the lower cylinder sleeve, a third cavity is formed among the lower end face of the upper cylinder sleeve, the inner wall of the middle cylinder sleeve, the upper end face of the lower piston and the outer wall of the upper mandrel, and at least one second side hole communicated with the third cavity is formed in the upper mandrel.

In some embodiments, the upper mandrel is provided with at least 2 second side holes, and each second side hole is uniformly distributed on the upper mandrel and communicated with the third cavity.

In some embodiments, an outer spline is arranged on the outer wall of the lower mandrel, an inner spline which is matched with the outer spline is arranged on the inner wall of the lower cylinder sleeve, a sealed fourth cavity is formed between the outer wall of the lower mandrel and the inner wall of the lower cylinder sleeve, and lubricating oil for lubricating the outer spline and the inner spline is injected into the fourth cavity.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a two effect hydraulic pressure ware is in the use, connect the center tube in the hole through the top connection, and the center tube, be formed with first cavity between the lower terminal surface of top connection and the inner wall of shell (last cylinder liner), it establishes at the outlying dish spring of center tube to install the cover in first cavity, when dabber (upper core axle and lower core axle) takes place seriously to jump the brill, dabber and center tube contact each other and extrude dish spring, utilize the dish spring to cushion and absorb the impact force that produces when jumping the brill, thereby reach good shock attenuation effect, protect the drill bit and improve the life of drill bit, the potential safety hazard of ground equipment has also been reduced simultaneously.

The utility model discloses a set up the sealing member and make first cavity be seal chamber to it has lubricating oil to pour into in the seal chamber, can reduce the wearing and tearing of dish spring in the motion process, improves the life of dish spring.

The utility model discloses a set up second cavity and third cavity, at the well drilling in-process, high-pressure mud squeezes into the drilling tool hole, flows to the lower part, from the blowout of drill bit water hole, takes the detritus in shaft bottom, returns ground from the annular space between drilling tool and pit shaft, because the mud pressure loss of bottom hole drilling tool and drill bit, the mud pressure of drilling tool hole is higher than the mud pressure of annular space. The utility model discloses in, go up the dabber upper end and be high pressure mud, because the second cavity decides first side hole intercommunication with the ring and be low pressure mud for the pressure of going up the dabber up end is greater than the pressure of the lower terminal surface department of enlarging head segment or last piston and forces the dabber down, promotes dabber 9 and stretches out down. In addition, the upper end surface of the lower piston is subjected to the mud pressure of a third cavity, and the third cavity is communicated with the second side hole to form high-pressure mud; the pressure of lubricating oil in the fourth cavity on the lower end surface of the lower piston is only used for lubricating (not required to be filled), so that the pressure level is small and can be ignored, and the lower piston can also push the lower mandrel to extend out under the action of comprehensive force. Under the fixed condition of pressure loss of lower drilling tool and drill bit, the utility model discloses can form an axial thrust, promote the dabber and stretch out, and then promote the drill bit and creep into. Assuming that the total stroke of the lower mandrel is L (L1 + L2), in the L1 stroke section, the upper mandrel 5 is not in contact with the central tube, and the thrust cannot be changed due to the size of the extended stroke at this time, and is a constant and stable thrust, when the thrust is used as the bit pressure, the bit pressure is constant and can be flexibly extended and retracted, and the stress condition of the optimized bit enables the drilling process to be more efficient, and the mechanical drilling speed to be improved; at L2 stroke section, the contact of upper core axle and center tube to can compress the butterfly spring group, thrust can be along with stretching out the reduction of stroke and crescent this moment, and obviously, this stroke section can provide the bigger thrust value of drill bit, prevents that whole lower core axle from being died by the pressure, and the auxiliary action is played the axial that the L1 section was not filtered out and is beated, plays fine shock attenuation effect, furthest's protection drill bit, improvement drill bit life.

To sum up, the utility model provides a two effect hydraulic pressure wares has solved the weight of boring and has applyed and jump the difficult problem of boring, and it has improved the atress condition of drill bit, gives a flexible, invariable thrust of drill bit to protect the drill bit, improve the mechanical drilling speed, have the effect of bumper shock absorber simultaneously concurrently, play constant weight of boring, absorbing dual function, further protected the drill bit, reduced drilling tool safety risk.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;

fig. 2 is a schematic structural view of the external spline of the present invention;

fig. 3 is a schematic structural view of the internal spline of the present invention;

the labels in the figure are: 1. the upper joint, 2, a butterfly spring group, 3, a central pipe, 4, an upper cylinder sleeve, 5, an upper mandrel, 6, a middle cylinder sleeve, 7, a lower piston, 8, a lower cylinder sleeve, 9, a lower mandrel, 10, a first cavity, 11, a sealing piece, 12, a second cavity, 13, a first side hole, 14, a third cavity, 15, a second side hole, 16 and a fourth cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be understood that the terms "one end", "the other end", "both ends", "between", "middle part", "lower part", "upper end", "lower end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Combine the attached drawing, the utility model discloses a two effect water conservancy pressurizers, which comprises an outer shell, the upper end of shell is connected with top connection 1, the shell cover is equipped with the dabber, the cover is equipped with center tube 3 in top connection 1's the hole, the lower extreme of center tube 3 stretches into the inside of shell and has the inner wall that is used for with the shell big footpath section of mutual sealing (or the lower extreme of center tube 3 is formed with the step that is used for with the inner wall of shell mutual sealing), the inner wall of shell, the lower terminal surface of top connection 1 and center tube 3 form first cavity 10, be provided with in the first cavity 10 that the cover is established and establish the outlying dish spring 2 of the path section of center tube 3. Wherein, threaded connection between top connection 1 and the shell, center tube 3 have the path section and set up the path section in path section lower extreme, and the path section of center tube 3 is mutually supported with the hole of top connection 1, and the path section of center tube is mutually supported with the inner wall of shell.

In some embodiments, the inner wall of the housing is provided with a limiting step for limiting the descending position of the central tube 3.

In the use process, the butterfly spring 2 is limited in the axial range between the large-diameter section (or step) of the central tube 3 and the lower end face of the upper joint 1, the central tube 3 can axially compress the butterfly spring 2 to enable the central tube to continuously extend into the upper joint 1, after the axial pressure is removed, the central tube 3 extends downwards under the elastic action of the butterfly spring group 2 and is limited through the limiting step on the inner wall of the shell.

In some embodiments, a sealing member 11 is disposed between the small diameter section of the central pipe 3 and the upper joint 1, and between the large diameter section of the central pipe 3 and the inner wall of the housing, so that the first cavity 10 is a sealed cavity. Wherein, install sealing member 11 on the inner bore wall of top connection 1, install sealing member 11 on the outer circumference of the major diameter section of center tube 3 to make seal chamber in the first cavity 10, it has the lubricating oil that is used for lubricating dish spring 2 to inject in the first cavity 10, thereby reduces the friction of dish spring 2 in the motion process, improves the life of dish spring, reduces the cost of maintaining.

In some embodiments, the outer shell comprises an upper cylinder sleeve 4, a middle cylinder sleeve 6 and a lower cylinder sleeve 8 which are sequentially connected from top to bottom, wherein two ends (upper end and lower end) of the upper cylinder sleeve, the middle cylinder sleeve and the lower cylinder sleeve are respectively provided with threads, and the upper cylinder sleeve, the middle cylinder sleeve and the lower cylinder sleeve are sequentially connected through the threads; the upper joint 1 is connected to the upper cylinder sleeve 4, the mandrel comprises an upper mandrel 5 and a lower mandrel 9 which are connected with each other, the upper end of the upper mandrel 5 extends into the upper cylinder sleeve 4 and is provided with an enlarged head section which is used for being mutually sealed with the inner wall of the upper cylinder sleeve 4, or the upper end of the upper mandrel 5 extends into the upper cylinder sleeve 5 and is connected with an upper piston which is used for being mutually sealed with the inner wall of the upper cylinder sleeve 4, namely the upper mandrel 5 which extends into the upper cylinder sleeve 4 can be mutually sealed with the inner wall of the upper cylinder sleeve, when the upper mandrel is of an integrated structure, the part which is mutually sealed with the inner wall of the upper cylinder sleeve can be called an enlarged head section, and when the upper mandrel is assembled, the part which is mutually sealed with the inner wall of the upper cylinder sleeve can be called an upper piston; or say that upper mandrel 5 has path section and major diameter section, and the major diameter section is located upper cylinder liner 4 and seals each other with the inner wall of upper cylinder liner, and upper cylinder liner 4 is worn out to the path section of upper mandrel 5. The lower end of the upper mandrel 5 penetrates through the upper cylinder sleeve 4, extends into the middle cylinder sleeve 6 and is connected with the lower mandrel 9, a second cavity 12 is formed between the outer wall of the upper mandrel 5 extending into the upper cylinder sleeve 4, the inner wall of the upper cylinder sleeve 4, the step surface of the inner hole of the upper cylinder sleeve 4 and the lower end surface of the enlarged head section or the upper piston, and at least one first side hole 13 communicated with the second cavity 12 is formed in the circumferential wall of the upper cylinder sleeve 4.

Wherein, the outer circumferential wall of the expanding head section (or the upper piston or the large diameter section) of the upper mandrel 5 is provided with a sealing element 11, and the inner hole (the small diameter section) at the lower part of the upper cylinder sleeve 4 is also provided with the sealing element, so that the upper cylinder sleeve 4 and the upper mandrel 5 are sealed mutually.

Wherein, the inner hole of the upper cylinder sleeve 4 is a step hole, the expanding head section (or the upper piston or the large diameter section) of the upper mandrel 5 is matched with the large hole section of the upper cylinder sleeve 4, and the lower section (or the small diameter section) of the upper mandrel 5 is matched with the small hole section of the upper cylinder sleeve 4.

In some embodiments, the upper cylinder jacket 4 is provided with at least 2 first side holes 13, and each first side hole 13 is uniformly distributed on the upper cylinder jacket 4 and is communicated with the second cavity 12.

In some embodiments, the upper end of the lower mandrel 9 extends into the middle cylinder sleeve 6 and is connected with a lower piston 7 for sealing with the inner wall of the middle cylinder sleeve 6, the lower end of the lower mandrel 9 penetrates through the middle cylinder sleeve 6 and extends out of the lower cylinder sleeve 8, wherein the lower end of the lower mandrel 9 extending out of the lower cylinder sleeve 8 is provided with a step, and the extending part is in transition to a large diameter and is equal to the diameter of the outer shell. A third cavity 14 is formed among the lower end surface of the upper cylinder sleeve 4, the inner wall of the middle cylinder sleeve 6, the upper end surface of the lower piston 7 and the outer wall of the upper mandrel 8, and at least one second side hole 15 communicated with the third cavity 14 is formed in the upper mandrel 5. Wherein, the inner hole (small diameter section) of the lower part of the upper cylinder sleeve 4 is also provided with a sealing element, and the outer circumference of the lower piston 7 is also provided with a sealing element 11, so that the third cavity 14 is a sealed cavity.

In some embodiments, the upper core shaft 5 has at least 2 second side holes 15, and each second side hole 15 is uniformly distributed on the upper core shaft 5 and is communicated with the third cavity 14.

With reference to fig. 2 and fig. 3, in some embodiments, an external spline is disposed on an outer wall of the lower mandrel 9, an internal spline that is matched with the external spline is disposed on an inner wall of the lower cylinder liner 8, a sealed fourth cavity 16 is formed between the outer wall of the lower mandrel 9 and the inner wall of the lower cylinder liner 8, and lubricating oil for lubricating the external spline and the internal spline is injected into the fourth cavity 16. The design of the fourth cavity 16, the internal spline and the external spline belongs to the prior art, and can be understood and appreciated by those skilled in the art, and will not be described herein. In the use process, the torque of the upper drill string is transmitted to the outer shell (the upper cylinder sleeve, the middle cylinder sleeve and the lower cylinder sleeve) through the upper connector 1, then transmitted to the lower mandrel 9 through the meshed splines and further transmitted to the lower drill bit.

To sum up, the utility model provides a two effect hydraulic pressure wares has solved the weight of boring and has applyed and jump the difficult problem of boring, has improved the atress condition of drill bit, gives a flexible, invariable thrust of drill bit to protect the drill bit, improve the mechanical drilling speed, have the effect of bumper shock absorber simultaneously concurrently, play constant weight of boring, absorbing dual function, further protected the drill bit, reduced drilling tool safety risk.

The embodiment of the present invention is the above. The foregoing is the preferred embodiments of the present invention, and if the preferred embodiments in the preferred embodiments are not obviously contradictory or are based on a certain preferred embodiment, the preferred embodiments can be combined and used by any superposition, and the specific parameters in the embodiments and examples are only for the purpose of clearly expressing the utility model verification process of the utility model, and are not used for limiting the patent protection scope of the present invention, which is still based on the claims, and all the equivalent structural changes made by the contents of the specification and the drawings should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two effect water conservancy pressurizers, includes the shell, the upper end of shell is connected with top connection (1), the shell cover is equipped with the dabber, a serial communication port, the cover is equipped with center tube (3) in the hole of top connection (1), the lower extreme of center tube (3) stretches into the inside of shell and has the big footpath section that is used for with the inner wall mutual sealing of shell, the inner wall of shell, the lower terminal surface and center tube (3) of top connection (1) form first cavity (10), be provided with in first cavity (10) and establish the small diameter section outlying dish spring (2) of establishing at center tube (3).

2. A double-acting hydraulic pressurizer according to claim 1, wherein the inner wall of the housing is provided with a limiting step for limiting the descending position of the central tube (3).

3. A double acting hydraulic pressurizer according to claim 1, wherein a seal (11) is provided between the small diameter section of the center pipe (3) and the upper joint (1), and between the large diameter section of the center pipe (3) and the inner wall of the housing so that the first cavity (10) is a sealed cavity.

4. A double-acting hydraulic pressurizer according to claim 3, wherein the first cavity (10) is filled with lubricating oil for lubricating the disc spring (2).

5. A double-acting hydraulic pressurizer according to any one of claims 1 to 4, wherein the housing comprises an upper cylinder sleeve (4), a middle cylinder sleeve (6) and a lower cylinder sleeve (8) which are sequentially connected from top to bottom, the upper joint (1) is connected to the upper cylinder sleeve (4), the mandrel comprises an upper mandrel (5) and a lower mandrel (9) which are connected with each other, the upper end of the upper mandrel (5) extends into the upper cylinder sleeve (4) and is formed with an enlarged head section for sealing with the inner wall of the upper cylinder sleeve (4) or the upper end of the upper mandrel extends into the upper cylinder sleeve (4) and is connected with an upper piston for sealing with the inner wall of the upper cylinder sleeve (4), the lower end of the upper mandrel (5) penetrates through the upper cylinder sleeve (4) and extends into the middle cylinder sleeve (6) and is connected with the lower mandrel (9), the outer wall of the upper mandrel (5) extending into the upper cylinder sleeve (4), A second cavity (12) is formed among the inner wall of the upper cylinder sleeve (4), the step surface of the inner hole of the upper cylinder sleeve (4) and the lower end surface of the enlarged head section or the upper piston, and at least one first side hole (13) communicated with the second cavity (12) is formed in the circumferential wall of the upper cylinder sleeve (4).

6. A double-acting hydraulic pressurizer according to claim 5, wherein the upper cylinder jacket (4) is provided with at least 2 first side holes (13), and each first side hole (13) is uniformly distributed on the upper cylinder jacket (4) and is communicated with the second cavity (12).

7. A double-acting hydraulic pressurizer according to claim 5, wherein the upper end of the lower mandrel (9) extends into the middle cylinder sleeve (6) and is connected with a lower piston (7) for sealing with the inner wall of the middle cylinder sleeve (6), the lower end of the lower mandrel (9) penetrates through the middle cylinder sleeve (6) and extends out of the lower cylinder sleeve (8), a third cavity (14) is formed among the lower end surface of the upper cylinder sleeve (4), the inner wall of the middle cylinder sleeve (6), the upper end surface of the lower piston (7) and the outer wall of the upper mandrel (5), and at least one second side hole (15) communicated with the third cavity (14) is formed in the upper mandrel (5).

8. A double-acting hydraulic pressurizer according to claim 7, wherein the upper mandrel (5) is provided with at least 2 second side holes (15), and each second side hole (15) is uniformly distributed on the upper mandrel (5) and is communicated with the third cavity (14).

9. A double-acting hydraulic pressurizer according to any one of claims 6 to 8, wherein the outer wall of the lower mandrel (9) is provided with external splines, the inner wall of the lower cylinder sleeve (8) is provided with internal splines which are matched with the external splines, a sealed fourth cavity (16) is formed between the outer wall of the lower mandrel (9) and the inner wall of the lower cylinder sleeve (8), and lubricating oil for lubricating the external splines and the internal splines is injected into the fourth cavity (16).