CN214170484U - Comprehensive tool for punching and fishing trial of through sleeve - Google Patents

Abstract

The utility model relates to a well workover rig in the oil field work construction, concretely relates to logical cover dashes drags for examination and prevents comprehensive instrument. The filter screen comprises an upper joint, a ball seat short joint, a groove joint, a cylinder, a groove spiral closed window sleeve milling head, a filter screen plug and a reinforcing and righting rib; the lower part of the upper joint is connected with the upper end of the ball seat short joint, and the lower end of the ball seat short joint is connected with the upper end of the groove joint; the lower end of the groove joint is connected with one end of the cylinder; the other end of the cylinder is connected with the upper end of the groove spiral window-closing sleeve milling head; the groove joint is connected with the filtering screen plug through internal threads. The device has the function of preventing sticking the brill, preventing that the tubular column blocks up, plays, next time tubular column just can accomplish well dredging, shell milling, sand washing, salvage, pressure testing construction processes simultaneously.

Description

Comprehensive tool for punching and fishing trial of through sleeve

Technical Field

The utility model relates to a well workover rig in the oil field work construction, concretely relates to logical cover dashes drags for examination and prevents comprehensive instrument.

Background

In the well repairing operation, the annular space gap between the drift fishing tool and the sleeve is small, the thrust force is small, the flushing effect is poor, and the rubber and dirt of a packer in the well are deposited, so that the tool jamming accident, the wet pipe string blocking quality environmental protection accident and the tool blocking construction failure are caused.

When the pressure test of the tubular column is carried out, the sliding sleeve or the pin oil drain device is combined with the one-way valve, and the tubular column is stuck with a drill, causes environmental pollution or reworks because proper circulation washing cannot be established due to dirt, packer rubber and the like.

If chinese utility model patent CN208203160U discloses a hydraulic pressure oil pipe centralizer for workover, it includes the top connection, O type sealing washer i, go up the center tube, pin i, the position sleeve, go up the casing, O type sealing washer ii, O type sealing washer iii, the spacer, the intermediate sleeve, go up the spring, lower casing, lower connecting tube, right the strip, solid fixed ring, lower spring holder, pin ii, the lower joint, pressure hole and lower center tube, this hydraulic pressure oil pipe centralizer during operation, high-pressure working fluid gets into the pressure hole, and promote down the center tube downstream, make spacer and intermediate sleeve also downstream, right the strip and compress into the bow-shaped, form right the oil pipe state, go up the center tube, lower center tube, go up spring and lower spring play shock attenuation and supporting role, when stopping to pour into high-pressure working fluid into, right the strip and resume lax state.

The utility model discloses a chinese utility model patent CN210217675U discloses an interior taper angle location milling workover rig, the device include the body, and the body upper end is equipped with the top connection, and the design of body bottom has interior conical surface, and the design has cutting particles on the interior conical surface, is equipped with the circulation pore that is linked together with the inside central channel of body on the interior conical surface, and the design of body bottom has the location guide shoe, and the location guide shoe is the cockscomb structure, has inlayed the cutting edge on the location guide shoe, and processing has the anti-sticking recess that enables the piece to pass through on the body outer wall. The utility model discloses a realized can accomodate the interior taper angle with falling thing in the well in, keep the falling thing in the well to grind in the inner cone angle, prevent that the falling thing from swinging in the sleeve pipe, mill the falling thing fish head mill rule, mellow and full after the mill, do benefit to fishing tool of next step and salvage, the piece that mills out is little, returns to ground on easy quick under the circulation of circulating fluid, has prevented the jamming and drilling occurence of failure, improves the efficiency of construction.

Chinese utility model patent CN200982171 discloses a multistage water conservancy diversion filtration formula of workover usefulness drags for cup, by the top connection, the center tube is constituteed, it has a plurality of punchhole to bore on the center tube outer wall, the lower extreme has the screen cloth for horn mouth form punchhole skin, it is internal to place in the cone-shaped screen pipe formula cup that has multistage water conservancy diversion hole, screen pipe formula cup lower extreme and lower clutch are connected, the device during operation, can form liquid circulation in impaired sleeve pipe oil well, wash away the drill chip, and can send into the cup of dragging for with great sand grain and drill chip in, prevent the sticking accident, use this device can accomplish under the liquid circulation condition in can not establishing the well and maintain accident well.

However, the existing tool can only carry out a single construction process when the pipe column is started and stopped, so that the construction period is long and the construction efficiency is low. Aiming at the condition that the sleeve is intact for drifting verification, scaling and salt deposition on the inner wall of a cement sheath or the sleeve are milled and expanded, sand washing is carried out on a high-gradient well, a packer rubber or a pipe rod falling object with steps is salvaged, and a pipe column pressure test is carried out, so far, a set of tool is not provided, and the above processes can be completed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lead to cover dashes and drags for examination and prevent comprehensive instrument has the function of preventing the sticking of drill, preventing the tubular column jam, plays, next tubular column just can accomplish well clearing, cover milling, sand washing, salvage, pressure testing work progress simultaneously.

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

the utility model provides a through sleeve punching and fishing trial comprehensive tool, which comprises an upper joint, a ball seat short joint, a groove joint, a barrel, a groove spiral closed window sleeve milling head, a filtering screen plug and a strengthening and righting rib; the lower part of the upper joint is connected with the upper end of the ball seat short joint, and the lower end of the ball seat short joint is connected with the upper end of the groove joint; the lower end of the groove joint is connected with one end of the cylinder; the other end of the cylinder is connected with the upper end of the groove spiral window-closing sleeve milling head; the groove joint is connected with the filtering screen plug through internal threads, so that the inner cavity of the tool is ensured to be smooth, and larger falling objects in the well are prevented from entering the inner cavity of the pipe column to block the pipe column.

Furthermore, the upper end of the milling head of the groove spiral closed window sleeve is a straight groove, the lower end of the milling head is a spiral groove, and the middle of the milling head is transversely provided with the groove, so that the drilling clamping accident of the pipe column caused by dirt deposition is effectively avoided, and the best washing effect is achieved.

Furthermore, the bottom of the spiral groove end is provided with a layer of wear-resistant material for milling the scale formation, salt formation and the like on the inner wall of the cement sheath or the casing.

Furthermore, 3-4 trapezoidal teeth which are uniformly distributed and inclined inwards are axially arranged on the side surface of an inner cavity of the middle lower part of the groove spiral closed window sleeve milling head and are used for fishing large falling objects such as packer rubber and the like and falling objects such as pipes and rods with steps.

Furthermore, 4-6 reinforcing and righting ribs which are uniformly distributed are arranged on the outer side of the middle part of the cylinder body, and play roles in preventing dirt from depositing and blocking the drill, and preventing the tool from bending and deforming and righting.

Further, the diameter of the cylinder is smaller than the diameters of the groove joint and the groove of the groove spiral window-closing sleeve milling head.

Furthermore, the filtering screen plug body and the bottom of the filtering screen plug body are uniformly distributed with holes.

Further, the sum of the bore areas is greater than the minimum bore area of the string to ensure that the upward velocity of the flushing liquid is at a maximum.

Furthermore, the diameter of the holes is larger than 10mm, so that small objects can smoothly return to the ground through the filter screen plug under the driving of circulating liquid, and large objects can be prevented from entering the inner cavity of the tubular column to block the tubular column.

Furthermore, a ball seat and a ball are arranged in the hole at the upper end of the ball seat short joint.

Compared with the prior art, the utility model has the advantages of it is following:

the device has the function of preventing sticking the brill, preventing that the tubular column blocks up, plays, next time tubular column just can accomplish well dredging, shell milling, sand washing, salvage, pressure testing construction processes simultaneously.

The logical cover is washed and is dragged for the examination and prevent the emergence of comprehensive instrument not only furthest having avoided engineering, quality and environmental protection accident, has reduced intensity of labour simultaneously, has improved the efficiency of construction.

Drawings

Fig. 1 is a schematic structural view of the through sleeve punching and fishing trial comprehensive tool according to an embodiment of the present invention.

The filter screen plug comprises an upper joint 1, a ball seat short joint 2, a groove joint 3, a barrel 4, a groove spiral window closing sleeve milling head 5, a filter screen plug 6, a ball seat 7, a ball 8 and a reinforcing and centering rib 9.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that 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. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.

In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.

Example 1

As shown in figure 1, the through sleeve punching and fishing trial comprehensive prevention tool is composed of an upper joint (1), a ball seat short joint (2), a groove joint (3), a cylinder body (4), a groove spiral closed window sleeve milling head (5), a filtering sieve plug (6), a ball seat (7), a ball (8) and a reinforcing and righting rib (9). The internal thread at the upper part of the upper joint (1) is connected with a workover string, and the internal thread at the lower part of the upper joint is connected with the external thread at the upper end of the ball seat short joint (2); the internal thread at the upper end of the groove joint (3) is connected with the external thread at the lower end of the ball seat short joint (2), the external thread at the lower end is connected with the internal thread of the cylinder body (4), and the internal thread is connected with the filtering screen plug (6) in a threaded manner, so that the smoothness of the inner cavity of the tool is ensured, and larger falling objects in the well are prevented from entering the inner cavity of the pipe column to block the pipe column; the upper end of a groove spiral closed window sleeve milling head (5) is welded with the other end of a barrel body (4), the middle of the groove is transversely provided with a groove, the upper end of the groove is a straight groove, the lower end of the groove is a spiral groove, wear-resistant materials are paved at the bottom of the spiral groove end and used for sleeve milling of scale formation, salt formation and the like on the inner wall of a cement ring or a sleeve, 3-4 trapezoidal teeth which are inclined inwards are axially and uniformly distributed on the inner side surface of the groove and used for fishing larger falling objects such as packer rubber and the like and pipe and rod falling objects with steps; a ball seat (7) and a ball (8) are arranged in the upper end hole of the ball seat short joint (2).

The diameter of the main body of the cylinder (4) is smaller than the diameters of the groove joint (3) and the groove of the groove spiral closed window sleeve milling head (5), 4-6 reinforcing and righting ribs (9) are uniformly distributed on the outer side of the middle part of the cylinder, and the functions of preventing dirt from depositing and clamping a drill, and preventing the tool from bending and deforming and righting are achieved; the body and the bottom of the filtering screen plug (6) are uniformly distributed with holes, and the sum of the total area of the holes is larger than the minimum inner hole area of the pipe column, so as to ensure that the upward return speed of the flushing liquid is in the maximum state.

Example 2

The use method of the through-sleeve flushing and fishing trial comprehensive prevention tool in the embodiment 1 comprises the following steps:

when the drifting verifies the integrity of the casing, if the inner wall of the casing has a cement sheath or the inner wall of the casing is scaled, salted and the like, and the drifting pipe column cannot reach the bottom of the well or the designed depth, the milling head of the milling head is milled through the groove spiral closed window; if mud and sand exist in the well and the drifting tubular column cannot reach the bottom of the well or the designed depth, the groove spiral of the milling head is closed through the groove joint and the groove spiral to form a spiral flow effect so as to improve the washing effect, and the mud and sand in the well are washed out through back washing; if packer rubber or light falling objects with shoulders exist in the well, the closed window of the milling head is sleeved by the groove spiral closed window, and the falling objects are fished out; the ball is thrown to the ball seat according to construction needs, pressure test of the tubular column is carried out, and after the pressure test is finished, the ball is washed out or thrown to a striking rod, so that the ball deviates from the ball seat, the tubular column is kept smooth, and the tubular column is prevented from being wetted or the subsequent construction is prevented from being influenced; through filtering and screening the blockage, the pipe column is prevented from being blocked or the sealing of the pressure testing ball seat is prevented from being influenced by large packer rubber and the like. "

The utility model discloses well spare part that does not expand the discussion itself, each spare part connected mode in this application all belong to this technical field's well-known technique, no longer give unnecessary details. Such as welding, threaded connections, etc.

In the present application, the term "plurality" means two or more unless expressly 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", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

Claims (10)

1. The comprehensive tool for punching, fishing and testing the through sleeve is characterized by comprising an upper joint, a ball seat short joint, a groove joint, a cylinder, a groove spiral window closing sleeve milling head, a filtering sieve plug and a reinforcing and righting rib; the lower part of the upper joint is connected with the upper end of the ball seat short joint, and the lower end of the ball seat short joint is connected with the upper end of the groove joint; the lower end of the groove joint is connected with one end of the cylinder; the other end of the cylinder is connected with the upper end of the groove spiral window-closing sleeve milling head; the groove joint is connected with the filtering screen plug through internal threads.

2. The tool of claim 1, wherein the grooved spiral closed window sleeve cutter head has a straight groove at the upper end, a spiral groove at the lower end, and a groove transversely in the middle.

3. A tool as claimed in claim 2, wherein the bottom of the end of the spiral groove is provided with a layer of wear resistant material.

4. The tool of claim 1 or 2, wherein the side of the inner cavity of the middle lower part of the grooved spiral closed-window milling head is provided with 3-4 trapezoidal teeth which are uniformly distributed and inclined inwards in the axial direction.

5. The tool as claimed in claim 1, wherein the cylinder body is provided with 4-6 reinforcing ribs uniformly distributed on the outer side of the middle part thereof.

6. A tool as claimed in claim 1 or claim 2, wherein the diameter of the barrel is less than the diameter of the recess at the recess joint, recess helical closed window sleeve cutter head recess.

7. The tool as claimed in claim 1, wherein the filtering screen body and the bottom thereof are uniformly distributed with holes.

8. The tool of claim 7, wherein the sum of the aperture areas is greater than the minimum internal bore area of the tubing string.

9. The tool of claim 7, wherein the eyelet has a diameter greater than 10 mm.

10. The tool of claim 1, wherein the ball seat and the ball are installed in the upper end hole of the ball seat short joint.

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