CN211201934U - Anchoring type test piece feeding device - Google Patents

Abstract

The utility model discloses an anchoring test piece feeding device, which comprises a central tube, a micro motor is arranged in the middle part in the central tube, the upper end and the lower end of the micro motor are respectively connected with an upper piston and a lower piston, and a gap is left between the micro motor and the central tube to form a flow passage; the positioning ring is fixed on the outer wall of the upper part of the central tube; the salvaging joint is positioned above the positioning ring and fixed on the outer wall of the central pipe; the upper slip mechanism is fixed at the bottom of the fishing joint; the upper cone body is positioned below the upper slip mechanism, sleeved on the outer wall of the central pipe and connected with the upper piston; the lower cone is sleeved on the outer wall of the central tube and is connected with the lower piston; the lower slip mechanism is positioned below the lower centrum and fixed on the outer wall of the central pipe; the bottom of the central tube is fixed with a test piece cavity. 1. When the anchoring test piece feeding device is used, the blowout prevention pipe does not need to be installed at the wellhead of the gas well for a long time, so that the out-of-control risk of blowout of the gas well is reduced; 2, the fishing joint and the throwing joint are utilized, so that the throwing and the fishing are convenient.

Description

Anchoring type test piece feeding device

Technical Field

The utility model belongs to the technical field of oil and gas development gas well test, concretely relates to device is put in to anchoring type test block.

Background

At present, the Changqing oil field probably has tens of thousands of gas wells, and the oil casing pipe has certain corrosion under the influence of gas well products. The oil casing corrosion perforation can cause the downhole accidents such as oil pipe fracture, gas channeling and the like, and even cause the blowout accident in serious cases. Therefore, the method is particularly important for monitoring and evaluating the corrosion of the gas well pipe, optimizing the oil casing pipe selection and reducing the potential safety hazard.

The gas well pipe is subjected to corrosion monitoring and corrosion evaluation, and a test piece detection method can be adopted. And (3) suspending the test piece in a downhole environment, taking out the test piece after 30 +/-2 days under normal production conditions, and calculating the average corrosion rate according to the loss amount of the test piece before and after the test, thereby providing a basis for optimizing the material selection of the oil casing and predicting the service life of the current oil casing.

When traditional operation is monitored in gas well corrosion, need install lubricator at the well head, then put the test piece to pit shaft preset position through the steel wire operation. During the testing period, the blowout prevention pipe is required to be installed on the wellhead for a long time, and the test vehicle is kept in standby at the wellhead, or a steel wire is tied on the wellhead, so that certain potential safety hazards of out-of-control blowout exist.

Disclosure of Invention

An object of the utility model is to provide an anchoring type test block puts in device to solve the problem that exists among the prior art.

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

an anchoring type test piece feeding device comprises a central tube, a micro motor is arranged in the middle of the central tube, the upper end and the lower end of the micro motor are respectively connected with an upper piston and a lower piston, and a gap is reserved between the micro motor and the central tube to form a flow passage; the positioning ring is fixed on the outer wall of the upper part of the central tube; the salvaging joint is positioned above the positioning ring and fixed on the outer wall of the central pipe; the upper slip mechanism is fixed at the bottom of the fishing joint; the upper cone body is positioned below the upper slip mechanism, sleeved on the outer wall of the central pipe and connected with the upper piston; the lower cone is sleeved on the outer wall of the central tube and is connected with the lower piston; the lower slip mechanism is positioned below the lower centrum and fixed on the outer wall of the central pipe; the bottom of the central tube is fixed with a test piece cavity.

Further, the test piece cavity includes test piece cover and gland, and test piece cover threaded connection is on the inner wall of center tube lower part, and gland threaded connection is in the bottom of center tube.

Furthermore, a threaded hole is formed in the center of the positioning ring, and the central pipe penetrates through the threaded hole to be fixedly connected with the positioning ring.

Furthermore, the fishing joint is fixed on the outer wall of the central pipe through a pin.

Furthermore, the upper vertebral body is connected with the upper piston through an upper connecting rod, and the lower vertebral body is connected with the lower piston through a lower connecting rod.

Furthermore, the central tube is provided with a groove, and the upper connecting rod and the lower connecting rod can respectively move up and down in the groove.

Further, the top of center tube is fixed with puts in the joint.

The utility model has the advantages that:

1. when the anchoring test piece feeding device is used, the blowout prevention pipe does not need to be installed at the wellhead of the gas well for a long time, so that the out-of-control risk of blowout of the gas well is reduced;

2. the anchoring test block throwing device of the utility model utilizes the fishing joint and the throwing joint, so that the throwing and the fishing are more convenient;

3. the utility model discloses device is put in anchor formula test block can put in the different positions of same mouthful of well, can place pressure gauge, test block etc. in the device for monitor different degree of depth gas well pressure or test block corrosion rate, use in a flexible way.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the anchoring test piece feeding device of the present invention.

Wherein: the device comprises a 1 throwing joint, a 2 fishing joint, a 3 upper slip mechanism, a 4 upper cone, a 5 lower cone, a 6 lower slip mechanism, a 7 positioning ring, an 8 test piece cover, a 9 gland, a 10 upper piston, a 11 lower piston, a 12 upper connecting rod, a 13 lower connecting rod, a 14 pin, a 15 micro motor and a 16 central pipe.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.

An anchoring test piece feeding device is designed for monitoring the corrosion rate of a gas well pipe. The device comprises a throwing connector 1, a fishing connector 2, an upper slip mechanism 3, an upper cone 4, a lower cone 5, a lower slip mechanism 6, a positioning ring 7, a test piece cover 8, a gland 9, an upper piston 10, a lower piston 11, an upper connecting rod 12, a lower connecting rod 13, a pin 14, a micro motor 15, a central pipe 16 and the like.

The throwing connector 1 is installed on the central pipe 2 through threads, the micromotor 15, the upper piston 10 and the lower piston 11 are installed inside the central pipe 16, the periphery of the micromotor forms a flow passage, and the positioning ring 7 is installed on the outer wall of the central pipe 16 through threads; the salvaging connector 2 is fixed on the outer wall of the central pipe 16 through a pin 14, and the upper slip mechanism 6 is connected to the lower end of the salvaging connector 2 through threads; the upper vertebral body 4 is connected with the upper piston 10 through an upper connecting rod 12 and sleeved on the outer wall of a central tube 16; the lower cone 5 is connected with the lower piston 11 through a lower connecting rod 13 and sleeved on the outer wall of the central tube 16; the lower slip mechanism 6 is fixedly arranged on the outer wall of the central pipe 16 through threads; the test piece cavity is positioned at the lower part of the central tube and consists of a test piece cover 8 and a gland 9. The slip mechanism comprises slip teeth and a slip cylinder respectively.

The utility model provides an anchoring type test block puts in device, during the use, set up the timing procedure of micromotor 15 on ground, then put in anchoring type test block putting in device to predetermined position in the pit shaft through the steel wire operation, micromotor 15 starts, drive piston 10, lower piston 11 removes, through last connecting rod 12, lower connecting rod 13 drives upper cone 4, lower cone 5 upwards respectively, move down, strut slips mechanism 3 and slips mechanism 6 down, make anchoring type test block putting in device sit at the oil pipe inner wall and seal, then lift the steel wire, make and put in the device and break away from with putting in joint 1.

During salvaging, the salvaging barrel is thrown in by using the steel wire, the salvaging barrel is butted with the salvaging connector 2, then the steel wire is lifted, the salvaging connector 2 is pulled, the fixed pin 14 is broken under stress, the salvaging connector 2 drives the upper slip mechanism 3 to move upwards, the upper slip mechanism 3 moves a certain distance and then is contacted with the positioning ring 7 to drive the central tube 16 to move upwards, the lower cone 5 is driven by the central tube 16 to move upwards, the steel wire is continuously lifted, and the anchoring type test piece throwing device can be fished out.

The utility model provides a device is put in to anchoring type test block, its characterized in that, the device can put in same mouthful of well different positions, can place pressure gauge, test block etc. in the test block intracavity for monitor different degree of depth gas well pressure or test block corrosion rate.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims (7)

1. An anchoring type test piece throwing device is characterized by comprising a central tube (16), a micro motor (15) is installed in the middle of the inside of the central tube (16), the upper end and the lower end of the micro motor (15) are respectively connected with an upper piston (10) and a lower piston (11), and a gap is reserved between the micro motor (15) and the central tube (16) to form an overflowing channel;

the positioning ring (7) is fixed on the outer wall of the upper part of the central tube (16); the salvaging connector (2) is positioned above the positioning ring (7) and fixed on the outer wall of the central pipe (16); the upper slip mechanism (3) is fixed at the bottom of the fishing joint (2); the upper cone body (4) is positioned below the upper slip mechanism (3), sleeved on the outer wall of the central pipe (16) and connected with the upper piston (10); the lower cone (5) is sleeved on the outer wall of the central tube (16) and is connected with the lower piston (11); the lower slip mechanism (6) is positioned below the lower cone and fixed on the outer wall of the central tube (16); the bottom of the central tube (16) is fixed with a test piece cavity.

2. An anchored test strip dispensing device according to claim 1, wherein the test strip chamber comprises a test strip cover (8) and a gland (9), the test strip cover (8) is screwed on the inner wall of the lower part of the central tube (16), and the gland (9) is screwed on the bottom of the central tube (16).

3. An anchored test strip dispensing device according to claim 1, wherein the positioning ring (7) has a threaded hole in its center, and the central tube (16) passes through the threaded hole and is fixedly connected to the positioning ring (7).

4. An anchored test strip deployment device according to claim 1, characterized in that the fishing adapter (2) is fixed to the outer wall of the central tube (16) by means of a pin (14).

5. The anchoring test strip dispensing device according to claim 1, wherein the upper cone (4) is connected to the upper piston (10) by an upper connecting rod (12), and the lower cone (5) is connected to the lower piston (11) by a lower connecting rod (13).

6. An anchored test strip dispensing device according to claim 5, characterized in that the central tube (16) is provided with a groove, and the upper link (12) and the lower link (13) can move up and down in the groove respectively.

7. An anchored test strip dispensing device according to claim 1, characterized in that the dispensing joint (1) is fixed to the top end of the central tube (16).

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