CN210829153U - Combined outer hook - Google Patents

Abstract

The utility model discloses a combination outer hook, including the rod iron, connect the top on rod iron one end, the public awl is connected to the rod iron other end, and the excellent body outer wall rigid coupling of rod iron has a plurality of steel hooks. The device rigid coupling steel hook on the rod iron can catch on rope junk or spring etc. of bulk and accomplish fishing work, and the one side of the terminal public awl of rod iron can be bored the silt particle of burying junk and open, makes things convenient for follow-up steel hook to catch on the junk, and on the other hand also can be to other junk, say so the pipe that falls, the screw thread that relies on the public awl outer wall bores into the pipe that falls, and the screw thread drives the pipe that falls, pulls out from the sleeve pipe.

Description

Combined outer hook

Technical Field

The utility model belongs to the technical field of the oil well fishing tool, concretely relates to combination outer hook.

Background

When an oil well overhauls a production string to fall into the well, and when an oil-water well carries out field operations such as well logging, perforation, pressure measurement and the like, the phenomenon that an oil rod, a steel wire rope or a cable falls into the well can occur. At the moment, the steel wire rope or the cable is in a ball shape at the bottom of the well, the oil rod is in a spiral shape, and the fishing is difficult to succeed by applying a conventional fishing tool. And the combined outer hook can realize accurate salvage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a combination outer hook has solved the problem of current fishing tool to the difficulty is salvaged to bulk junk in the pit.

The utility model discloses the technical scheme who adopts is, makes up the outer hook, including the rod iron, connect the top on rod iron one end, the public awl is connected to the rod iron other end, and the excellent body outer wall rigid coupling of rod iron has a plurality of steel hooks.

The utility model is also characterized in that,

the upper connector is provided with a through hole a along the central axis, the steel bar is in threaded connection with one end of the through hole a, the steel bar is provided with a through hole b along the central axis, the through hole b is communicated with the through hole a, the male cone is provided with a through hole c along the central axis, and the through hole c is communicated with the through hole b.

The appearance of the male cone is conical, and the outer wall of the male cone is provided with a screw thread.

The end of each steel hook is close to the upper joint.

The male cone is in threaded connection with the steel bar.

The combined outer hook of the utility model has at least the following beneficial effects,

firstly, a steel hook is fixedly connected to a steel rod, and can hook rope falling objects or springs and the like in a ball shape to finish fishing work, on one hand, a male cone at the tail end of the steel rod can drill away mud sand for burying the falling objects, so that the subsequent steel hook can conveniently hook the falling objects, and on the other hand, other falling objects, such as falling pipes, can be drilled into the falling pipes by means of screw threads on the outer wall of the male cone, and the falling pipes are driven by the screw threads to be pulled out of a sleeve;

and the combined outer hook is suitable for fishing perforated cables, steel wire ropes and bent spring-shaped oil rods which are dropped in the oil field underground operation, and the use of the combined outer hook has great effect on improving the operation efficiency. In the operation process of fishing cables, steel wire ropes and bent spring-shaped oil rods, when a hook-shaped fishing tool is adopted, the fishing is difficult to succeed at one time, and after the fishing is carried out by adopting the combined outer hook, the fishing success rate is high, so that the operation efficiency is improved. The combined outer hook has strong practicability, can finish the fishing of cables, steel wire ropes and bent spring-shaped oil rods, and can also perform fishing on packer rubber sleeves;

thirdly, the operation of the combined outer hook is simple, and the operation is performed according to the rules by only mastering the principle of the combined outer hook, so that the operation is certainly handy.

Drawings

FIG. 1 is a schematic structural view of the combined outer hook of the present invention;

fig. 2 is a schematic view of the combined outer hook of the present invention in operation.

In the figure, 1, an upper connector, 2, a steel bar, 3, a male cone, 4, a through hole a, 5, a through hole b, 6, a through hole c, 7, a steel hook, 8, a falling object and 9, a sleeve.

Detailed Description

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

The combined outer hook comprises a steel rod 2, wherein the steel rod 2 is provided with a through hole b5 along the central axis, one end of the steel rod 2 is connected with an upper joint 1, the upper joint 1 is provided with a through hole a4 along the central axis, the steel rod 3 is in threaded connection with one end of the through hole a4, the through hole b5 is communicated with the through hole a4, the other end of the steel rod 2 is connected with a male cone 3, the male cone 3 is provided with a through hole c6 along the central axis, the through hole c6 is communicated with the through hole b5, the outer wall of the male cone 3 is provided with a screw thread which can facilitate the steel rod 2 to enter the interior of a globoid falling object 8 buried by silt, the conical shape of the male cone has a guiding function and simultaneously enables the male cone 3 to easily go deep into the falling object, the outer wall of the rod body of the steel rod 2 is fixedly connected with a plurality of steel hooks 7, and the through hole a, the through hole b and the through hole.

The tail end of each steel hook 7 is close to the upper connector 1, and the male cone 3 is in threaded connection with the steel bar 2.

The utility model discloses the working process of combination outer hook:

when the falling objects 8 in the inner sleeve 9 of the oil-water well are steel wire ropes, cables, oil rods and the like, the falling objects 8 of rope-shaped ropes and spring rods are formed underground, the combined outer hook is lowered to be 2-3 meters close to the top of a fish to record the rotary weight during fishing, a pump truck connects a pipeline to the top end of a pipe column to carry out positive circulation well washing, water washes the top of the fish from a through hole c6, after a male cone 3 enters an inner hole of the fished falling object 8, appropriate bit pressure is applied for 5-10KN, a drilling tool rotary table is rotated for 2-5 circles and then is appropriately adjusted according to well depth and well inclination, a screw thread on the outer wall of the male cone is forced to extrude and bite into the inner wall of the falling objects 8, the inner wall is expanded to create fishing conditions for the steel hook 7, a space for the steel rod 2 to enter the top of the fish is formed, and the falling objects 8 are hooked. The well deviation is properly adjusted, and when the rotary table slowly releases the torque to ensure that the steel hook can bear certain pulling force and torque, the falling object 8 can be completely or partially fished out by adopting a lifting or reversing method. When the combined outer hook is used, the screw threads of the drilling tool must be connected and fastened to achieve a certain torque, the uniform speed is slow when the drilling tool is placed or lifted, the rotary disc is strictly forbidden to be unscrewed, the fishing square entry calculation is accurate, and the pressurization of the lower probe cannot exceed 2 KN.

The practical application situation of the combined outer hook of the utility model,

in the process of perforating operation of a 35-1 well in actual production, when a perforating gun clamp lifts a cable, the cable is broken, only the lower outer hook is usually salvaged, the outer hook is difficult to enter the top of a fish, so that milling is required, the subsequent workload is increased, in order to improve the salvage timeliness and reduce the salvage risk, the tool is adopted for testing, and one-time salvage is successful during salvage; and (3) processing the accident well in the 25-56-2 well, wherein in the fishing process, a conventional fishing tool is adopted, the accident well cannot be fished, the oil rod in the well is judged to be seriously bent and possibly form a spring shape, and the combined outer hook is adopted to realize successful fishing.

The utility model discloses the cost of manufacture of combination outer hook is about 300 supplyes 500 yuan, but the benefit that produces is huge, salvages with conventional instrument and contrasts, when using conventional fishing tool to the rod class junk 8 and can't salvage, will pass through the process of grinding, cover, washing, salvaging and change the fish top for the fish top that conventional instrument can salvage, foresees the required expense 7-8 ten thousand yuan, with this instrument, only need 0.6-0.7 ten thousand yuan, the expense can be practiced thrift about 6-7 ten thousand yuan for every well. When the conventional fishing tool for the rope-type falling objects 8 cannot be fished, conditions are created for subsequent fishing through the processes of grinding, sleeving, washing and fishing, the expected cost is 3 ten thousand yuan, only 0.6-0.7 ten thousand yuan is needed by using the tool, and the cost of each well can be saved by about 6-7 ten thousand yuan. In actual production practice, the tool is used for fishing ropes for 4 wells successively, and the cost is saved by about 12 ten thousand yuan; the rod is salvaged for 7 wells, the cost is saved by about 56 ten thousand yuan, and the total cost is saved by about 68 ten thousand yuan.

The utility model discloses combination outer hook is fit for salvaging rope class, pole class junk, easy operation, with low costs, and it is high to salvage the success rate, has both improved the operation quality, has shortened the well workover cycle, reduces work load again, and effectual reduction activity expenses according to our factory's oil well situation, to salvaging rope class, pole class junk, is the selection of ideal, is very worth promoting.

Claims (5)

1. The combined outer hook is characterized by comprising a steel bar (2), one end of the steel bar (2) is connected with an upper connector (1), the other end of the steel bar (2) is connected with a male cone (3), the outer wall of a bar body of the steel bar (2) is fixedly connected with a plurality of steel hooks (7), and the outer wall of the male cone (3) is provided with a screw thread.

2. The combination outer hook according to claim 1, wherein the upper joint (1) is provided with a through hole a (4) along the central axis, the steel rod (2) is in threaded connection with one end of the through hole a (4), the steel rod (2) is provided with a through hole b (5) along the central axis, the through hole b (5) is communicated with the through hole a (4), the male cone (3) is provided with a through hole c (6) along the central axis, and the through hole c (6) is communicated with the through hole b (5).

3. The combination outer hook according to claim 1, characterized in that the male cone (3) has a conical shape.

4. A combination outer hook according to claim 1, characterized in that the end of each steel hook (7) is close to the top sub (1).

5. The combination outer hook according to claim 1, characterized in that the male cone (3) is in threaded connection with the steel bar (2).

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