阅读说明：本技术 捕获机构一种适用于全尺寸多形状井底落物的打捞装置 (Fishing device suitable for full-size multi-shape well bottom junk of catching mechanism ) 是由 彭晓龙 惠城 任威严 查永进 汪海阁 于 2019-09-04 设计创作，主要内容包括：本发明公开了石油工程钻井设备工具技术领域的捕获机构一种适用于全尺寸多形状井底落物的打捞装置,包括工具外壳体,所述工具外壳体的内壁一侧设有钻井液流通管道,位于所述工具外壳体的内腔底部设有捕获机构,所述钻井液流通管道的底端通过连接装置与捕获机构相连通,所述端执行器包括捕获机构支撑架、钢丝绳移动端滑块和钢丝绳,所述钢丝绳移动端滑块均布在捕获机构支撑架的内侧壁上,钢丝绳连接于钢丝绳移动端滑块和捕获机构支撑架的上,位于所述捕获机构支撑架的内腔设有环内液压通道,所述环内液压通道的内腔还设有带动钢丝绳移动端滑块滑动的滑动活塞,在不清楚井底落物大小和形状的前提下,能够适应于不同形状不同尺寸的井下落物的打捞,大大降低了打捞作业的难度,提高了落物打捞效率,工作稳定性高。(The invention discloses a catching mechanism in the technical field of petroleum engineering drilling equipment tools, in particular to a fishing device suitable for full-size multi-shape shaft bottom junk, which comprises a tool outer shell, wherein a drilling fluid circulation pipeline is arranged on one side of the inner wall of the tool outer shell, a catching mechanism is arranged at the bottom of an inner cavity of the tool outer shell, the bottom end of the drilling fluid circulation pipeline is communicated with the catching mechanism through a connecting device, an end actuator comprises a catching mechanism support frame, steel wire rope moving end sliding blocks and steel wire ropes, the steel wire rope moving end sliding blocks are uniformly distributed on the inner side wall of the catching mechanism support frame, the steel wire ropes are connected to the steel wire rope moving end sliding blocks and the catching mechanism support frame, an annular hydraulic channel is arranged in the inner cavity of the catching mechanism support frame, and a sliding piston for driving, on the premise that the size and the shape of the underground falling object are not clear, the underground falling object salvage device can be suitable for salvaging underground falling objects with different shapes and sizes, the difficulty of salvaging operation is greatly reduced, the falling object salvaging efficiency is improved, and the working stability is high.)

1. Catch mechanism a fishing device suitable for full-size multiform shape bottom hole junk includes tool outer casing (1), its characterized in that: a drilling fluid circulation pipeline (2) is arranged on one side of the inner wall of the tool outer shell (1), a capturing mechanism (3) is arranged at the bottom of an inner cavity of the tool outer shell (1), the drilling fluid circulation pipeline (2) is communicated with the capturing mechanism (3), the end actuator (3) comprises a capturing mechanism support frame (301), a steel wire rope moving end sliding block (302) and a steel wire rope (303), the steel wire rope moving end sliding blocks (302) are uniformly distributed on the inner side wall of the capturing mechanism supporting frame (301), the steel wire rope (303) is connected to the steel wire rope moving end sliding blocks (302) and the inner wall of the capturing mechanism supporting frame (301), an annular hydraulic channel (304) is arranged in an inner cavity of the capturing mechanism supporting frame (301), the inner cavity of the hydraulic channel (304) in the ring is also provided with a sliding piston (305) which drives the sliding block (302) at the moving end of the steel wire rope to slide.

2. A catch mechanism according to claim 1, a fishing device adapted for use with full size multi-shape bottom hole junk, the fishing device comprising: three groups of sliding blocks (302) at the moving end of the steel wire rope and three groups of steel wire ropes (303) are arranged.

3. A catch mechanism according to claim 2, wherein the catch mechanism is adapted for use with a full size multi-shape bottom hole junk: the three groups of steel wire ropes (303) are arranged in a staggered mode.

Technical Field

The invention relates to the technical field of drilling equipment tools in petroleum engineering, in particular to a fishing device of a capturing mechanism, which is suitable for full-size multi-shape well bottom junk.

Background

In the drilling construction process, the situation that a drilling tool is broken to form a bottom-hole fish is often encountered, the fish is required to be salvaged through a salvage tool, different salvage tools are required to be selected according to different characteristics of the falling object when the salvage tool is selected, the oil well operation can be recovered after the fishing of the falling object is ensured, and a fisher is generally required to be used for fishing the rod-shaped falling object in the process; while a fishing spear is used for rope drops, tubular drops will be applied to the male and female cones, while smaller drops use a basket. Just so have the limitation that fishing tool used, when being difficult to judge the fish top situation moreover, lead to the operation degree of difficulty of salvaging in the pit big, not only increased operation intensity, improved the running cost, salvage inefficiency to the fish moreover, job stabilization nature is poor.

Based on the above, the invention designs a catching mechanism, which is a fishing device suitable for full-size multi-shape bottom hole junk, and can fish junk with various shapes and sizes on the premise of not knowing the size and shape of the bottom hole junk so as to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a catching mechanism, which is a fishing device suitable for full-size multi-shape shaft bottom junk, can be suitable for fishing different shapes and sizes of junk, greatly reduces the difficulty of fishing operation, has high junk fishing efficiency and high working stability, and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: catching mechanism a fishing device suitable for full-size multi-shape downhole junk comprises a tool outer shell, a drilling fluid circulation pipeline is arranged on one side of the inner wall of the tool outer shell, a capturing mechanism is arranged at the bottom of the inner cavity of the tool outer shell, the bottom end of the drilling fluid circulation pipeline is communicated with the capturing mechanism through a connecting device, the end actuator comprises a capturing mechanism supporting frame, a steel wire rope moving end sliding block and a steel wire rope, the steel wire rope moving end sliding blocks are uniformly distributed on the inner side wall of the capturing mechanism supporting frame, the steel wire rope is connected to the steel wire rope moving end sliding blocks and the inner wall of the capturing mechanism supporting frame, one end of the steel wire rope connected with the capturing mechanism supporting frame is fixed, one end of the steel wire rope connected with the steel wire rope moving end sliding blocks slides, an in-ring hydraulic channel is arranged in an inner cavity of the capturing mechanism supporting frame, and the inner cavity of the hydraulic channel in the ring is also provided with a sliding piston for driving the sliding block at the moving end of the steel wire rope to slide.

Preferably, the three groups of the sliding blocks at the moving end of the steel wire rope and the three groups of steel wire ropes are arranged.

Preferably, the three groups of steel wire ropes are arranged in a staggered mode.

Compared with the prior art, the invention has the beneficial effects that: this kind of fishing device of mechanism is caught in application, through pouring into the drilling fluid into to drilling fluid circulation pipeline, for catching the mechanism and providing hydraulic power, realize being located the wire rope of catching on the mechanism and carrying out the tight action of cable, under the prerequisite of unclear shaft bottom junk size and shape, the device can salvage the junk of multiple shape multiple size, effectively avoided because of the size shape of unclear junk and try over again and change fishing tool, salvage time has effectively been saved, the efficiency of salvage is improved, the job stabilization nature is high, therefore, the clothes hanger is strong in practicability.

Drawings

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

FIG. 1 is a schematic view of a fishing structure body according to the present invention;

FIG. 2 is a schematic view of a fishing and tightening cable of the present invention;

FIG. 3 is a top view of the stationary ring and the rotating ring of the present invention;

fig. 4 is a partial cross-sectional view of a hydraulic power mechanism of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a tool outer housing body; 2. a drilling fluid circulation line; 3. a capturing mechanism; 4. a connecting device; 301. a capturing mechanism support frame; 302. a steel wire rope moving end sliding block; 303. a wire rope; 304. an intra-ring hydraulic channel; 305. a sliding piston; 306. a steel wire rope fixing end; 307. a blocking spacer; 308. a hydraulic flow channel inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the catching mechanism is a fishing device suitable for full-size multi-shape well bottom junk and comprises a tool outer shell 1 and a connecting device 4 arranged at the top of the tool outer shell and used for being connected with a drill rod, and the fishing device is conveyed to the well bottom through the drill rod during fishing operation. The inner wall of the tool outer shell 1 is provided with 3 drilling fluid circulation pipelines 2, the bottom of the inner cavity of the tool outer shell 1 is provided with a capturing mechanism 3, the drilling fluid circulation pipelines 2 are communicated with the capturing mechanism 3 and used for injecting drilling fluid into the capturing mechanism 3 to provide hydraulic power, the end actuator 3 comprises a capturing mechanism support frame 301, steel wire rope moving end sliding blocks 302 and steel wire ropes 303, the steel wire rope moving end sliding blocks 302 are uniformly distributed on the inner side wall of the capturing mechanism support frame 301, the steel wire ropes 303 are connected to the inner walls of the steel wire rope moving end sliding blocks 302 and the capturing mechanism support frame 301, the inner cavity of the capturing mechanism support frame 301 is provided with an in-ring hydraulic channel 304, the inner cavity of the in-ring hydraulic channel 304 is also provided with a sliding piston 305 for driving the steel wire rope moving end sliding blocks 302 to slide, the connected steel wire rope 303 is tightened through the steel wire rope moving end sliding block 302.

The three groups of steel wire rope moving end sliding blocks 302 and the three groups of steel wire ropes 303 are arranged in a staggered mode, falling objects can be well fixed, and the fishing efficiency of the falling objects is improved.

The specific working principle is as follows:

when the fishing tool is used, the fishing tool is conveyed to the well bottom through a drill rod, drilling fluid is conveyed to a hydraulic channel 304 which is divided into three rings by a blocking spacer 307 through three drilling fluid flow channels 2 through three drilling fluid flow channel inlets 308, the sliding of the sliding piston 305 is adjusted by increasing or reducing the pressure of the drilling fluid in the drilling fluid flow channels 2, and the sliding of the sliding piston 305 drives the sliding of the steel wire rope moving end sliding block 302, which is characterized in that: when the pressure of the drilling fluid in the drilling fluid circulation pipeline 2 is increased, the sliding block 302 at the moving end of the steel wire rope slides clockwise to drive the steel wire rope 303 to contract to capture falling objects; when the pressure of the drilling fluid in the drilling fluid circulation pipeline 2 is reduced, the sliding block 302 at the moving end of the steel wire rope slides anticlockwise to drive the steel wire rope 303 to release falling objects; along with the movement of the three groups of steel wire rope moving end sliding blocks 302, the middle ropes of the three groups of steel wire ropes 303 are tightly fastened to realize the tight fastening of the fallen fish, and then the catching mechanism 3 is lifted out to lift out the fallen fish.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean 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 preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.