CN213297893U

CN213297893U - Pocket fishing device of logging exploring tube

Info

Publication number: CN213297893U
Application number: CN202021930231.XU
Authority: CN
Inventors: 王子虎
Original assignee: China National Administration Of Coal Geology 119 Exploration Team
Current assignee: China National Administration Of Coal Geology 119 Exploration Team
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-05-28
Anticipated expiration: 2030-09-07

Abstract

The utility model provides a pocket fishing device for a logging probe, which comprises a sleeve and a plurality of rows of barb structures capable of blocking the probe; each row of barb structures are arranged inside the sleeve, the plurality of rows of barb structures are circumferentially arranged by the axial lead of the sleeve, and each row of barb structures are fixedly connected with the sleeve; one end of the sleeve is provided with a connecting structure which can be connected with the drill rod, and the other end of the sleeve is provided with a tooth-shaped structure. A pocket dress fishing device of logging exploring tube, solved because lack among the prior art and be used for exploring tube salvage equipment, and then lead to exploring tube technical problem that can not salvage.

Description

Pocket fishing device of logging exploring tube

Technical Field

The utility model belongs to the geological exploration field especially relates to a pocket dress fishing device of logging exploring tube.

Background

During the drilling process, the geophysical logging work of the coal field is an effective way for qualitatively and quantitatively explaining the coal rock stratum. Borehole reducing often takes place in the softer stratum in the drilling in the logging work, the broken area of stratum often can take place to fall the piece phenomenon, the reducing or fall the piece and probably lead to logging exploring tube to promote the in-process by the jam, because logging exploring tube is connected with ground winch and is promoted with the cable, promote the unable downward effort that produces of cable, if continue to promote can only make the exploring tube in the drilling more tight by the cable more, finally cause the state that the exploring tube can not come down in the hole.

The traditional processing mode is as follows: once a logging person finds that the tensioning tension of the cable is increased, the winch controller triggers the alarm device to give an alarm, the hoisting of the probe pipe is immediately stopped, the cable is appropriately loosened to observe whether the probe pipe can move, the cable is manually hoisted if the probe pipe can move, and a part with a larger section of pore diameter is found according to a well \38473; if the probe cannot move, the probe is confirmed to be stuck in the borehole. At this time, the cable is broken by pulling force of the winch, and due to the fact that the connector of the cable and the logging instrument is designed according to the requirement that the probe tube is clamped in logging work, the connector is designed to be a weak link, the pre-breaking force of the weak link is smaller than the pre-breaking force of the cable, and therefore when the cable is broken by pulling the winch, the cable can be broken at the weak link of the connector. Therefore, the problem that the exploration tube cannot be salvaged due to the fact that equipment for exploring tube salvage is lacked in the prior art because part of cables are left in holes if the cables are disconnected from other links in the accident handling process, the difficulty of accident handling is increased, and the exploration tube cannot be salvaged is solved.

Disclosure of Invention

In view of this, the utility model aims at providing a pocket dress fishing device of logging exploring tube has solved because lack among the prior art and be used for exploring tube salvage's equipment, and then leads to exploring tube can not salvage technical problem.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a pocket fishing device for a logging probe comprises a sleeve and a plurality of rows of barb structures capable of blocking the probe;

each row of the barb structures are arranged inside the sleeve, a plurality of rows of the barb structures are circumferentially arranged by the axial lead of the sleeve, and each row of the barb structures are fixedly connected with the sleeve;

one end of the sleeve is provided with a connecting structure which can be connected with the drill rod, and the other end of the sleeve is provided with a tooth-shaped structure.

Furthermore, every row the barb structure includes a plurality of barbs, and two adjacent barb intervals of same row are equal.

Further, the axial distance from the first barb to the last barb of the barb structure in the same row is equal to 1-1.2 times of the length of the probe.

Furthermore, the included angle between the barb and the inner wall of the sleeve is alpha, and alpha is 30-45 degrees.

Further, the barb is wire rope.

Furthermore, the diameter of a ring formed by the head ends of a plurality of barbs positioned on the same radial section in the sleeve is 0.7-0.8 times of the diameter of the probe, and the tail ends of the barbs are fixedly connected with the inner wall of the sleeve.

Furthermore, the barb structures of a plurality of rows are uniformly arranged on the circumference of the sleeve axis, and the barb structures are 5-6 rows.

Further, connection structure includes first reinforcing plate structure, second reinforcing plate structure, circular apron and adapter sleeve, circular apron covers sleeve pipe one end terminal surface, circular apron with the sleeve pipe rigid coupling, adapter sleeve sets up on the circular apron, be equipped with first step disc and second step disc on the circular apron, first step disc with second step disc is with the axle center, be equipped with first reinforcing plate structure on the first step disc, second step disc is equipped with second reinforcing plate structure, be equipped with the first screw thread that can be connected with the drilling rod on the adapter sleeve.

Furthermore, the connection structure is a reducing joint, one end of the reducing joint is connected with the sleeve, and the other end of the reducing joint is provided with a second screw thread which can be connected with the drill rod.

Compared with the prior art, a pocket dress fishing device of logging exploring tube have following advantage:

the pocket fishing device for the logging exploring tube has the advantages of convenient material taking, simple operation and good effect in actual use; the utility model adopts the steel wire rope to be welded at the inner side of the sleeve in the barb arrangement, the pocket-mounted detecting tube is more stable, and the damage to the logging detecting tube is less; the utility model discloses alleviateed the processing degree of difficulty of this type of accident, shortened the time of handling the accident.

Drawings

The accompanying drawings, which form a part hereof, 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 without undue limitation. In the drawings:

fig. 1 is a schematic cross-sectional structural view of a fishing device for a logging sonde according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a fishing device for logging sondes according to a first embodiment of the present invention;

fig. 3 is a schematic connection structure diagram of a fishing device for a logging sonde according to a first embodiment of the present invention;

fig. 4 is a schematic cross-sectional structural view of a fishing device for a logging sonde according to a first embodiment of the present invention;

fig. 5 is a structural schematic diagram of included angles between barbs and an inner wall of a casing in the pocket fishing device of the logging probe.

Description of reference numerals:

101. a sleeve; 102. a connecting pipe; 1011. a tooth-shaped structure; 103. a second trapezoidal round surface; 201. a first stiffener structure; 202. a second stiffener structure.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A pocket fishing device for a logging probe comprises a sleeve 101 and a plurality of rows of barb structures capable of blocking the probe, wherein the sleeve is transformed from a core barrel, as shown in figure 1;

each row of barb structures are arranged inside the sleeve 101, the plurality of rows of barb structures are circumferentially arranged by the axial lead of the sleeve 101, and each row of barb structures are fixedly connected with the sleeve 101;

one end of the sleeve 101 is provided with a connecting structure which can be connected with a drill rod, and the other end of the sleeve 101 is provided with a tooth-shaped structure 1011.

Every row of barb structure includes 11 barbs, two adjacent barb intervals of same row equal, the interval is 100mm between two adjacent barbs, in this embodiment, the barb is wire rope, the ring diameter that a plurality of barb head ends that lie in same radial cross section in the sleeve pipe 101 formed is 0.7-0.8 times of probe diameter, barb tail end and the welding of sleeve pipe 101 inner wall, multirow barb structure uses sleeve pipe 101 axial lead circumference align to grid, the barb structure is 6 rows, because wire rope's elasticity is great, wire rope pocket dress exploring tube is more reliable to it is less to survey well exploring tube damage.

The axial distance from the first barb to the last barb of the same row of barb structures is equal to 1-1.2 times of the length of the probe tube, the axial distance from the first barb to the last barb of the same row of barb structures is equal to 2.5m in the embodiment, the length of the sleeve 101 is 3.5m, the outer diameter of the sleeve 101 is 94mm, and the inner diameter of the sleeve 101 is 89 mm.

As shown in fig. 5, the barbs are at an angle α to the inner wall of the cannula 101, which in this embodiment is 45 °.

The first embodiment, the connection structure includes first reinforcing plate structure 201, second reinforcing plate structure 202, circular apron and adapter sleeve 101, the cable can pass adapter sleeve 101, circular apron covers sleeve 101 one end terminal surface, circular apron and sleeve 101 rigid coupling, adapter sleeve 101 sets up on circular apron, be equipped with first step disc and second step disc 103 on the circular apron, first step disc and second step disc 103 are coaxial, be equipped with first reinforcing plate structure 201 on the first step disc, second step disc 103 is equipped with second reinforcing plate structure 202, be equipped with the first screw thread that can be connected with the drilling rod on the adapter sleeve 101, first screw thread is the internal thread, first reinforcing plate structure 201, second reinforcing plate structure 202 can strengthen fishing device's radial stress bearing strength.

In the second embodiment, not shown in the drawings, the connection structure is a reducer union, the cable can pass through the reducer union, one end of the reducer union is connected with the casing 101, a second screw thread capable of being connected with the drill rod is arranged at the other end of the reducer union, and the second screw thread is an external thread.

When the fishing device is used for operation, the fishing device is connected with the drill rod and is placed at the clamping position of the probe tube, the drill rod is used for driving the tubular fishing device to rotate in the hole, so that the probe tube falls off from a block or a necking part of the probe tube, and meanwhile, the probe tube pocket is installed into the fishing device and cannot fall out. And finally, lifting the drill pipe and the fishing device, and mounting the logging exploring tube.

Working mode of the example

Scheme one

1. When the logging probe pipe is determined to be clamped at a certain position in the drill hole, the logging cable is cut off at the wellhead position, and the cut-off point is preferably the cable connected with one end of the probe pipe and left in the ground part for about 20 meters.

2. And tensioning the cable in the hole and fixing the cable at the hole opening so as to keep the cable in a tensioned and straightened state in the hole, wherein the residual part of the cable on the ground is to be penetrated into the drill rod.

3. Then the connecting structure of the fishing device is connected with a drill rod of a drilling tool, the cable of the residual ground part penetrates into the drill rod, the drill rods are connected one by one and are placed into the holes, and the cable of the residual ground part needs to penetrate into the drill rod and then the drill rod needs to be placed each time.

4. When the drill rod is placed at the clamping stagnation position, the drill rod is slowly rotated while the drill rod is slowly placed, and when the tensile force of the tension meter is increased, the falling block at the clamping stagnation position is separated from the probe.

5. The drill rod is continuously and slowly lowered, and when the cable remained on the ground is sensed to move downwards along with the drill rod, the probe pipe is already tucked into the fishing device

6. After the drill rod is lifted, the cable in the hole is recovered, and after the drill rod is completely lifted to the ground, the fishing device is disassembled, and the clamped probe tube is taken out.

7. And finishing the salvaging of the probe.

Scheme two

1. When the logging probe is determined to be stuck at a depth in a drill hole, the logging winch is adopted to break the cable, and the cable can be broken at a connector weak link in the hole.

2. And after the cable is broken, the logging winch is used for recovering all the cables in the hole to the winch.

3. The fishing device is connected with the drill rod and then the drill rod is placed downwards.

4. When the drilling rod is transferred to the clamping stagnation position, the grouting pump is connected to the drilling rod, pressurization grouting is carried out, the clamped position is washed, and meanwhile the drilling rod is slowly rotated and transferred.

5. When the data of the rig tension meter is observed to be changed from small to large, the situation that the clamping stagnation object is separated from the exploring tube is shown, the drill rod is continuously and slowly put down to the bottom of the hole, and the logging exploring tube is guaranteed to be packed into the fishing device.

6. And lifting all drill rods to the ground, unloading the fishing device and taking out the logging exploring tube.

7. And finishing the salvaging of the probe.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pocket dress fishing device of logging probe, its characterized in that: comprises a sleeve (101) and a plurality of rows of barb structures capable of blocking the probe;

each row of the barb structures are arranged inside the sleeve (101), the plurality of rows of the barb structures are circumferentially arranged by the axial lead of the sleeve (101), and each row of the barb structures are fixedly connected with the sleeve (101);

one end of the sleeve (101) is provided with a connecting structure capable of being connected with a drill rod, and the other end of the sleeve (101) is provided with a tooth-shaped structure (1011).

2. The logging exploring tube salvaging device according to claim 1, wherein: every row the barb structure includes a plurality of barbs, and two adjacent barb intervals of same row are equal.

3. The logging exploring tube salvaging device according to claim 2, wherein: the axial distance from the first barb to the last barb of the barb structure in the same row is equal to 1-1.2 times of the length of the probe tube.

4. The logging probe fishing device of claim 3, wherein: the included angle between the barb and the inner wall of the sleeve (101) is alpha, and the alpha is 30-45 degrees.

5. The logging sonde scooping up device of any one of claims 2 to 4, wherein: the barb is wire rope.

6. The logging probe fishing device of claim 5, wherein: the diameter of a ring formed by the head ends of a plurality of barbs located on the same radial section in the sleeve (101) is 0.7-0.8 times of the diameter of the probe, and the tail ends of the barbs are fixedly connected with the inner wall of the sleeve (101).

7. The logging probe fishing device of claim 6, wherein: the multiple rows of the barb structures are uniformly arranged on the circumference of the axial lead of the sleeve (101), and the number of the barb structures is 5-6.

8. The logging sonde scooping up device of any one of claims 6 or 7, wherein: the connecting structure comprises a first reinforcing plate structure (201), a second reinforcing plate structure (202), a circular cover plate and a connecting sleeve (101), wherein the circular cover plate covers one end face of the sleeve (101), the circular cover plate is fixedly connected with the sleeve (101), the connecting sleeve (101) is arranged on the circular cover plate, a first stepped circular surface and a second stepped circular surface (103) are arranged on the circular cover plate, the first stepped circular surface is coaxial with the second stepped circular surface (103), the first reinforcing plate structure (201) is arranged on the first stepped circular surface, the second stepped circular surface (103) is provided with the second reinforcing plate structure (202), and a first screw thread capable of being connected with a drill rod is arranged on the connecting sleeve (101).

9. The logging sonde scooping up device of any one of claims 6 or 7, wherein: the connecting structure is a reducing joint, one end of the reducing joint is connected with the sleeve (101), and the other end of the reducing joint is provided with a second screw thread which can be connected with a drill rod.