CN217380434U - Workover operation construction tubular column bleeder - Google Patents

Abstract

The utility model discloses a construction pipe column liquid drainage device for workover operation, which comprises a pipe body, wherein the pipe body is provided with a liquid drainage hole; the device also comprises a sealing sleeve; the sealing sleeve is sleeved outside the pipe body and blocks the liquid discharge hole; the seal sleeve is fixedly connected with the pipe body through a shearing pin. When the tubular column is blocked and the tubular column is sprayed and lifted to be polluted, the liquid discharge device is opened to be communicated with the shaft, so that the tubular column sewage is prevented from falling to the ground, the environmental pollution is avoided, the operation workers can conveniently operate, and the accident is prevented.

Description

Construction pipe column liquid drainage device for workover operation

Technical Field

The utility model belongs to the technical field of the oil field workover operation tubular column prevents to spout the downhole tool technical field of oil pipe polluted environment, and specifically speaking is workover operation construction tubular column bleeder.

Background

At present, in the oil exploitation industry, the types of the existing oil drains are many, and most of the existing oil drains open oil drainage by using a sucker rod in a well or open oil drainage by using a ground input tool. If the sucker rod of these types of oil drains breaks off, the sucker rod can not be lifted out, and oil drainage can not be realized. The problems of poor liquid leakage effect, small application range and the like exist, so that the production cost is increased, the production safety coefficient is reduced, the environment is polluted and the like are caused. Meanwhile, various liquid dischargers cannot be matched with a workover string for use.

When the oil field workover is in operation, workover construction process mainly has salvage tubular column, visit the sand washing tubular column, the tubular column is scraped in the drifting, etc., it is less to go up tubular column ubiquitous bottom tubular column latus rectum, block up the passageway easily, the construction tubular column does not install the bleeder, tubular column jam condition ubiquitous appears in the work progress, it is many with the operation mode of pin or striking formula to have the individually to install bleeder many, but this kind of bleeder is because its specific operation mode and structure often take place to open, the operation is complicated to exist the maloperation and takes place the incident, cause the unable bleeder problem of tubular column liquid, lead to crude oil in the tubular column, sewage pollution, well site simultaneous operation construction reduces. Therefore, the operating construction string liquid leakage device which is safe, reliable and simple to operate needs to be designed to avoid the problem of spraying and lifting construction of the operating construction string.

At present, the existing oil extraction and drainage devices are various in types and are mainly installed on an oil extraction pipe column for use, for example, in a split type oil extraction pipe drainage device in Chinese patent 96238554.9, a supporting unlocking assembly of the oil extraction pipe drainage device can be contacted with an oil drainage assembly to drain oil when the oil extraction pipe is lifted, and the oil drainage device can be opened to drain oil when an operation worker fails in operation or meets a new condition in the process of going into a well and the oil extraction pipe needs to be lifted, so that the operation is unsuccessful.

Also, for example, the Chinese patent 00247456.5 "oil pipe drainer" has the problems of the above patents. The operation error of the operating worker is caused by the fact that the operation of lifting the oil pipe is needed in the oil pipe discharging process and the habit which is difficult to change and is developed for many years, and the oil drain device can be opened for oil drainage.

According to the tile-type rotary oil drain device disclosed by the Chinese patent 00258996.6, the slips cannot be radially opened and clamped on the sleeve, so that oil cannot be drained, namely, the slips can be radially opened and clamped on the sleeve, and the slips cannot be withdrawn to clamp a pipe column after oil drainage, so that an accident is caused.

As in the oil drain device of the oil pipe in chinese patent 201020617851.8, the oil drain can be performed only by making the lock sleeve 5 and the inner pipe 3 move relatively by the friction force generated between the friction mechanism and the sleeve, and the lock sleeve 5 and the inner pipe 3 cannot move relatively by the friction force generated between the friction mechanism and the sleeve under the conditions of scaling, corrosion and the like, so the oil drain is unreliable.

Like the Chinese patent 2007200290118A rotary oil drain device, the structure is simple, but the sealing sleeve (5) and the inner pipe (3) are in threaded connection, the connecting thread is loosened by the friction force generated between the friction mechanism and the sleeve, and the problems of scaling, corrosion and the like of the underground tool are caused by the limited friction force, so that the problem that the connecting thread of the sealing sleeve (5) and the inner pipe (3) cannot be loosened and oil cannot be drained is very serious. The other oil drain device is a pin oil drain device, which is installed between a pump barrel and an oil inlet valve of an oil well pump, a sucker rod and a piston need to be firstly put forward during oil drainage, then a striking rod is put in to break a pin on the pin oil drain device, so that oil drainage is realized by the oil pipe on the pump and the sleeve pipe communication, after the oil drain device is installed, if the piston cannot be lifted out when the sucker rod is broken, the thrown striking rod cannot reach the oil drain device, oil drainage cannot be opened, if the oil drain device is a heavy oil well, heavy oil and dead oil exist in the oil pipe on the pump, and the falling speed of the striking rod slowly hits the pin and cannot drain oil.

Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.

SUMMERY OF THE UTILITY MODEL

The above-mentioned defect to prior art existence, the utility model aims at providing a workover construction tubular column bleeder takes place the tubular column to block up and carry the tubular column and take place to spout when carrying the pollution, and the bleeder is opened and is kept UNICOM with the pit shaft, prevents that tubular column sewage from falling to the ground, avoids producing environmental pollution, makes the operation workman make things convenient for the operation, prevents the occurence of failure. The core structure is led to main part (connect 1+ drain pipe 6 for the body) integral type, and the internal diameter is the same with the construction tubular column internal diameter, and the construction tubular column of being convenient for is connected.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the well workover operation construction tubular column liquid drain comprises a tubular body, wherein the tubular body is provided with a liquid drain hole; the device also comprises a sealing sleeve; the sealing sleeve is sleeved outside the pipe body and blocks the liquid discharge hole; the sealing sleeve is fixedly connected with the pipe body through a shearing pin;

the pipe body comprises a joint and a liquid discharge pipe;

the upper end of the liquid discharge pipe is connected with the lower end of the joint in a screw thread manner; the liquid discharge hole is formed on the liquid discharge pipe;

the sealing sleeve is sleeved outside the liquid discharge pipe and blocks the liquid discharge hole;

the sealing sleeve is fixedly connected with the joint through a shearing pin;

the sealing device also comprises an upper sealing ring and a lower sealing ring; the upper sealing ring is sealed between the sealing sleeve and the joint; the lower sealing ring is sealed between the sealing sleeve and the liquid discharge pipe;

the pipe body is of an integrated through core structure, and the inner diameter of the pipe body is the same as that of the construction pipe column.

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

with the continuous improvement of the construction civilization requirements and the forced implementation of HSE measures, the oil field does a large amount of work in the aspect of well site pollution prevention and is continuously strengthened, wherein the application of the oil pipe drainer in the oil well tubular column is one of measures for preventing oil in the tubular column from being drained to the ground in operation construction, polluting the well site and reducing crude oil waste. When the oil drain is used for an oil well operation pipe column, the oil drain is arranged in the well according to a normal construction design and is mainly connected with a position which is above 100-plus 150-meter of a pipe shoe of a workover operation construction pipe column, a liquid drain device is in a closed state during normal construction, the inner diameter of the pipe is in a sealed state during construction under a specific pressure, when the oil pipe is detected at the bottom of the well or the pipe shoe blocks the oil pipe, the pipe column is pressurized to a pin shearing value of the liquid drain device, a pin shearing sliding sleeve moves downwards, a liquid drain hole is communicated with an annular space, and liquid in the pipe column is drained into the pipe sleeve.

The utility model discloses with liquid drainage well in the oil pipe during workover operation construction, avoid the interior liquid splash instrument on ground of tubular column, the lower part at operation construction tubular column is installed to the bleeder, be in closed condition in normal operation work progress, be in under the tubular column jam condition when the construction, it makes fixed sliding sleeve pin shear short to strengthen tubular column internal pressure, the sliding sleeve is down under the pressure effect, the central tube lets out the liquid sky and opens, tubular column liquid in time lets out the well casing in, operation construction well head operating condition has been improved, well site environmental pollution has been reduced, and the work efficiency is improved simultaneously, the potential safety hazard is eliminated.

Drawings

Fig. 1 is a schematic structural view of the liquid drainer of the construction pipe column for workover operation of the present invention.

In the figure: the device comprises a joint 1, a shearing pin 2, an upper sealing ring 3, a sealing sleeve 4, a lower sealing ring 5 and a liquid discharge pipe 6.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1, the present invention provides a technical solution:

the well repair operation construction tubular column liquid discharger comprises a tubular body, wherein a liquid discharge hole is formed in the tubular body;

the device also comprises a sealing sleeve;

the sealing sleeve is sleeved outside the pipe body and blocks the liquid discharge hole;

the seal sleeve is fixedly connected with the pipe body through a shearing pin.

Further, the tube body is of one-piece design.

Further, the pipe body is designed by combining a plurality of pieces.

Further, the pipe body comprises a joint and a liquid drainage pipe;

the upper end of the liquid discharge pipe is connected with the lower end of the joint in a screw thread manner; the liquid discharge hole is formed on the liquid discharge pipe;

the sealing sleeve is sleeved outside the liquid discharge pipe and blocks the liquid discharge hole;

the sealing sleeve is fixedly connected with the joint through a shearing pin.

Further, the device also comprises an upper sealing ring and a lower sealing ring;

the upper sealing ring is sealed between the sealing sleeve and the joint; the lower sealing ring is sealed between the sealing sleeve and the liquid discharge pipe.

The integral type leads to core structure of main part (connect 1+ bleeder 6 ═ body), the internal diameter is the same with the construction tubular column internal diameter, upper and lower joint screw thread is connected with oil pipe about the tubular column, go up built-in oil pipe box in the screw thread position, the screw thread is the oil pipe pin down, the construction tubular column of being convenient for is connected, the bleeder hole sets up on bleeder center tube upper portion, two channels of concave groove are designed from top to bottom in the bleeder hole, the installation sealing washer is guaranteed opening pressure and tubular column and is sealed, prevent that the bleeder from leaking about and can't cut the pin.

The upper part of the joint 1 is provided with oil pipe threads (internal threads), the lower part of the liquid discharge pipe 6 is provided with oil pipe threads (external threads), the liquid discharge pipe 6 is provided with a liquid discharge hole 6-1, the lower part of the joint 1 is connected with the upper part of the liquid discharge pipe 6, the diameter of the inner upper part of the sealing sleeve 4 is larger than that of the inner lower part, the upper part of the sealing sleeve 4 is sleeved outside the lower part of the joint 1, the lower part of the sealing sleeve 4 is sleeved outside the lower part of the liquid discharge pipe 6, the sleeved part of the lower part of the sealing sleeve 4 and the liquid discharge pipe 6 is positioned below the liquid discharge hole 6-1, the sleeved part of the upper part of the sealing sleeve 4 and the lower part of the joint 1 is provided with an upper sealing ring 3, the upper sealing ring 3 seals a gap between the upper part of the sealing sleeve 4 and the lower part of the joint 1, the sleeved part of the sealing sleeve 4 and the liquid discharge pipe 6 is provided with a lower sealing ring 5, the lower sealing ring 5 is positioned below the liquid discharge hole 6-1, and the lower sealing ring 5 seals the gap between the lower part of the sealing sleeve 4 and the liquid discharge pipe 6, the sealing sleeve 4 is connected to the joint 1 through the shearing pin 2, the shearing pin 2 is located above the upper sealing ring 3, the distance between the lower end face of the sealing sleeve 4 and the upper end of the lower thread of the liquid discharge pipe 6 is larger than the distance between the upper end face of the sealing sleeve 4 and the lower end face of the joint 1, when the sealing sleeve 4 falls onto an oil pipe coupling connected to the lower thread of the liquid discharge pipe 6, the upper end face of the sealing sleeve 4 is located below the lower end face of the joint 1, and smooth liquid discharge of a workover construction pipe column is guaranteed.

The utility model discloses a design from the angle of saving cost, if with joint 1 and bleeder 6 design an organic whole also be in the utility model discloses a within the scope of protection.

The oil drainer is designed into an integral through-core structure, the inner diameter of the integral through-core structure is the same as the inner diameter of a construction pipe column, an upper joint thread and a lower joint thread are connected with an upper oil pipe and a lower oil pipe of the pipe column, an oil pipe female buckle is arranged in the upper thread position, the lower thread is an oil pipe male buckle and is convenient for the connection of the construction pipe column, a liquid discharge hole is arranged at the upper part of a central tube of the liquid discharge device, two concave grooves are arranged at the upper part and the lower part of the liquid discharge hole, a sealing ring is arranged to ensure the opening pressure and the sealing of the pipe column, the pin cannot be cut off when the liquid discharge device leaks up and down, a fixed pin limiting groove is arranged at the upper part of an upper sealing groove of the liquid discharge hole so as to be convenient for the central tube to be fixedly arranged with an outer sliding sleeve and an anti-falling joint at the lower part, the outer sliding sleeve is fixed at the top of the liquid discharge device by the pin at the top of the liquid discharge device, the anti-falling into the well under the pressure impact because the liquid discharge device is gradually pressurized, after the shear strength of the fixed pin is achieved, the pin is cut off, the outer sleeve of the cut pin instantly slips on the upper disconnecting joint, the central core pipe leaks out of the liquid leakage hole, and the liquid leakage function is started.

The utility model discloses install in workover construction tubular column lower part, the interior upper portion diameter of seal cover 4 is greater than interior lower part diameter, and when 4 internal pressure of seal cover was higher than the external pressure definite value, the pressure differential produced decurrent thrust messenger and cut pin 2 and cut, and 4 whereabouts of seal cover, workover construction tubular column oil pipe and sleeve pipe UNICOM, liquid just can not be subaerial with the liquid splash in the oil pipe when lifting oil pipe in the tubular column, has guaranteed workover pollution-free operation.

Example 2:

referring to fig. 1, the present invention provides a technical solution:

the well workover operation construction tubular column liquid drain comprises a tubular body, wherein the tubular body is provided with a liquid drain hole;

the device also comprises a sealing sleeve;

the sealing sleeve is sleeved outside the pipe body and blocks the liquid discharge hole;

the seal sleeve is fixedly connected with the pipe body through a shearing pin.

The liquid drainage device is arranged at a position 100-150 meters above a tail shoe of a workover construction string, the liquid drainage device is opened hydraulically, the pin material and the size design of the liquid drainage device effectively avoid the problem that the liquid drainage device is opened and cannot be opened in advance, the anti-drop joint is arranged at the lower part of the liquid drainage device, the outer sliding sleeve is prevented from falling into a well, and the main body of the central pipe of the liquid drainage device is protected. Still be equipped with between liquid discharge pipe and the drain cover and be used for restricting the limit structure that liquid discharge pipe went up, the surface finish treatment of the surface of center tube adopts the nickel phosphorus structure: gradually decreasing from the upper end to the lower end. The interior upper portion diameter of seal cover is greater than interior lower part diameter, and when seal cover internal pressure was higher than an external pressure definite value, the pressure differential produced decurrent pressure and made to cut the pin and cut, and the drainage just can be realized with sleeve pipe UNICOM to the inside of drainage pipe, the utility model overcomes the safe risk that the mode was opened to machinery is high, and the shortcoming of operation complicacy can not be opened when going into the well, and reliable operation leans on to step up in the oil pipe during drainage and realizes the tubular column drainage, and the reliability of drainage is high. Because the pressure of the opened liquid drainage is higher than the working pressure of the construction process, the pressure test can be simultaneously carried out on the oil pipe column above the liquid drainage when the liquid drainage is opened, the sealing performance of the construction oil pipe can be verified, and the success rate of well repair can be improved.

When the oil drain is used for operating a pipe column in an oil well, the oil drain is put into the well according to a normal construction design, the pipe column is blocked by utilizing a pump truck to positively press the oil pipe to shearing pressure, the pin shaft is cut off, the shearing cylinder falls onto the anti-falling righting block, the oil drain hole is opened, oil and the sleeve are communicated, and liquid in the oil pipe flows into the sleeve, so that the next operation is facilitated, and the environmental pollution is reduced. Compared with the prior art, the oil drainage device has the advantages of wide application range, simplicity in operation, rapidness, safety in use, high efficiency, capability of increasing oil drainage capacity, and rapidness and convenience in maintenance.

Although fig. 1 is used in all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as parts or structural features missing from the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the present invention can also be achieved, so that all these modified embodiments are within the protection scope of the present invention.

All parts which are not discussed in the present application and the connection mode of the parts in the present application belong to the known technologies in the field, and are not described again. Such as welding, threaded connections, etc.

In the present application, the term "plurality" is intended to mean two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, rather than indicating or implying that the indicated device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (1)

1. The well workover operation construction tubular column liquid drain comprises a tubular body, wherein the tubular body is provided with a liquid drain hole;

it is characterized by also comprising a sealing sleeve; the sealing sleeve is sleeved outside the pipe body and blocks the liquid discharge hole; the sealing sleeve is fixedly connected with the pipe body through a shearing pin;

the pipe body comprises a joint and a liquid discharge pipe;

the upper end of the liquid discharge pipe is connected with the lower end of the joint in a screw thread manner; the liquid discharge hole is formed on the liquid discharge pipe;

the sealing sleeve is sleeved outside the liquid discharge pipe and blocks the liquid discharge hole;

the sealing sleeve is fixedly connected with the joint through a shearing pin;

the sealing device also comprises an upper sealing ring and a lower sealing ring; the upper sealing ring is sealed between the sealing sleeve and the joint; the lower sealing ring is sealed between the sealing sleeve and the liquid discharge pipe;

the pipe body is of an integrated through core structure, and the inner diameter of the pipe body is the same as that of the construction pipe column.

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