CN112191936B - Reaming device suitable for end of coiled tubing and application method thereof - Google Patents

Abstract

The invention provides a reaming device suitable for a pipe end of a continuous oil pipe, which adopts a lock nut, a clamping sliding block, a sliding sleeve and a clamping seat to clamp the continuous oil pipe, and an electric wrench is used for driving an adjustable reamer to rotate so as to achieve the purpose of removing inner burrs. The problem that burrs in a certain length of the end part cannot be removed or the precision is poor after the burrs are removed in a certain length of the end part when the coiled tubing is connected with a tool for well descending is solved, so that the coiled tubing is easy to break at a weak position in the use process.

Description

A reaming device suitable for coiled tubing end and a method of using the same

Technical Field

The invention belongs to the technical field of continuous oil pipe connection operations for petroleum exploration and development, and in particular relates to a reaming device suitable for a continuous oil pipe end.

Background technique

Coiled tubing is a welded steel pipe, usually produced by high-frequency welding. Therefore, there is an internal burr with a height of less than 2.3mm in the coiled tubing. Since the coiled tubing is several thousand meters long, it is difficult to remove it. Generally, the internal burr is not removed in the state of delivery.

It is difficult to remove the internal burrs. If conditions permit, they can be removed by mechanical processing. However, since the continuous oil pipe is coiled into a large roll, it is difficult to take its joints. Therefore, the reliability of mechanical processing to remove the internal burrs, that is, removing the internal burrs on the inner wall of about 100mm at the end of the continuous oil pipe, is poor. Since this work is limited by on-site operations and on-site conditions, the main tools used on site for removal are manual electric grinding heads, files and other tools. The diameter and roundness of the continuous oil pipe at the pipe end are difficult to guarantee, and the labor intensity of workers is high.

At present, the automatic pipe reaming device provided by patent CN201320824044.7 is only for one size of continuous pipe, or two sizes, and cannot complete serialized adjustable reaming, nor can it realize continuous oil pipe reaming; it cannot ensure that the center of the oil pipe and the center of the reaming device are on the same straight line, and cannot simply and quickly realize the center alignment of the pipe and the reamer; it must be equipped with a motor and a bracket, which causes unnecessary physical labor, and has low accuracy, and is not suitable for reaming the inner diameter of continuous pipes.

Therefore, there is an urgent need for a deburring device with high working efficiency and simple operation to remove burrs in the coiled tubing.

Summary of the invention

The purpose of the present invention is to provide a continuous oil pipe end reaming device to solve the problem of uneven wall thickness caused by removing internal burrs in other deburring methods, solve the problem of long procurement cycle of well teams, and save reaming costs and labor costs.

The present invention realizes the method:

A reaming device suitable for the end of a coiled tubing comprises an electric wrench (1), an adjustable reamer (2), a reamer positioning sleeve (3), a clamping seat (4), a locking nut (5), a clamping slide block (6), and a sliding sleeve (7); the left end of the adjustable reamer (2) is connected to the electric wrench (1); the left part of the adjustable reamer (2) is connected to the left end of the reamer positioning sleeve (3) through a thread; the right end of the reamer positioning sleeve (3) is connected to the left end of the clamping seat (4) through a thread; a locking nut (5) is arranged outside the right part of the clamping seat (4); a plurality of clamping seat square holes (41) are arranged on the right part of the clamping seat (4), and clamping slide blocks (6) corresponding to the clamping seat square holes (41) are arranged inside the clamping seat square holes (41); and the sliding sleeve (7) is arranged outside the right part of the clamping seat (4).

Furthermore, a handle (21) is provided at the left end of the adjustable reamer (2), and a thread is provided on the right side of the handle (21).

Furthermore, a thread is provided at the left end of the clamping seat (4), a first limiting boss (42) is provided on the right side of the thread, and a second limiting boss (43) is provided on the right side of the first limiting boss (42); the second limiting boss (43) is higher than the first limiting boss (42); the cross-section of the second limiting boss (43) is circular, and the number of the square holes (41) of the clamping seat is determined according to actual needs.

Furthermore, the inner wall cross-section of the locking nut (5) is circular; the inner wall diameter of the locking nut (5) is larger than the diameter of the second limiting boss (43); a locking nut end face (51) is provided at the left end of the locking nut (5); the inner wall of the locking nut end face (51) has a diameter smaller than the diameter of the second limiting boss (43); the locking nut end face (51) is located on the left side of the second limiting boss (43); and the inner wall of the locking nut (5) is provided with threads.

Furthermore, the upper surface of the clamping slider (6) is an inclined surface, and the inclined surface has a downward slope from left to right; a clamping slider limiting ear (61) is provided at the upper left end of the clamping slider (6); a through hole (62) is provided at the lower part of the clamping slider (6); the clamping slider (6) is in a square dumbbell shape in a top view; and the cross section of the lower end surface of the clamping slider (6) is 165 ^° .

Furthermore, the outer wall of the left end of the sliding sleeve (7) is provided with a thread corresponding to the inner wall thread of the locking nut (5); the inner wall of the left end of the sliding sleeve (7) is provided with a sliding sleeve oblique groove (71) corresponding to the clamping slider (6), and the inclined surface of the sliding sleeve oblique groove (71) contacts the inclined surface of the clamping slider (6); the inner wall diameter of the sliding sleeve (7) gradually decreases from left to right.

Furthermore, during installation, the clamping slider (6) is placed in the square hole (41) of the clamping seat; then the sliding sleeve (7) is sleeved on the right part of the clamping seat (4), at which time the inclined surface of the clamping slider (6) contacts the inclined surface of the inclined groove (71) of the sliding sleeve, and the clamping block limiting ear (61) at the upper left end of the clamping slider (6) prevents the clamping slider from falling from the square hole (41) of the clamping seat; the left end of the clamping seat (4) is inserted from the right end of the locking nut (5), at which time the second limiting boss (4 3) is stuck on the right side of the locking nut end face (51), and the locking nut (5) and the sliding sleeve (7) are in contact through threads; the adjustable reamer (2) enters from the right end of the reamer positioning sleeve (3), the shank (21) passes through the reamer positioning sleeve (3), and the left part of the adjustable reamer (2) is threadedly connected with the left end of the reamer positioning sleeve (3); the right end of the reamer positioning sleeve (3) is threadedly fixed with the left end of the clamping seat (4); the adjustable reamer (2) is installed on the electric wrench through the shank (21).

Furthermore, a method for using a reaming device for a coiled tubing end includes the following steps:

(1) Insert the coiled tubing from the right end of the clamping seat (4) and place it between a plurality of clamping slide blocks (6);

(2) Push the coiled tubing to the left so that the coiled tubing orifice contacts the right end of the adjustable reamer (2);

(3) Place the right end of the adjustable reamer (2) into the orifice of the coiled tubing;

(4) Tighten the locking nut (5) to drive the sliding sleeve to move to the left, so that the clamping slide (6) moves toward the center line of the clamping seat (4) and gradually clamps the coiled tubing;

(5) Fixing the reamer positioning sleeve (3);

(6) starting the electric wrench (1) to rotate the adjustable reamer (2) relative to the reamer positioning sleeve (3);

(7) Under the action of the thread at the connection between the adjustable reamer (2) and the reamer positioning sleeve (3), the adjustable reamer (2) moves to the right to ream the coiled tubing.

Beneficial effects of the present invention:

(1) The center of the coiled tubing and the center of the reamer are on the same straight line, thus ensuring the uniformity of the wall thickness during the reaming process.

(2) It is small in size and suitable for moving with the well crew. The inner hole can be reamed when the coiled tubing is bundled.

(3) The inner wall of the coiled tubing is ensured to be uniform and smooth, so that the coiled tubing is not easily torn due to uneven wall thickness during the process of connecting with other connecting tools after the reamer has completed the reaming.

(4) It can realize the reaming of coiled tubing of different sizes.

(5) Save labor costs and increase the accuracy and uniformity of reaming.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a reaming device suitable for a coiled tubing end;

Fig. 2 is a schematic diagram of an adjustable reamer;

Fig. 3 is a schematic diagram of a reamer positioning sleeve;

Figure 4 is a schematic diagram of a clamping seat;

Figure 5 is a schematic diagram of a locking nut;

Figure 6 is a front view of the clamping slider;

Figure 7 is a left side view of the clamping slider;

FIG8 is a schematic diagram of a sliding sleeve;

In the figure, 1 is an electric wrench, 2 is an adjustable reamer, 21 is a tool handle, 3 is a reamer positioning sleeve, 4 is a clamping seat, 41 is a square hole of the clamping seat, 42 is a first limiting boss, 43 is a second limiting boss, 5 is a locking nut, 51 is an end face of the locking nut, 6 is a clamping slider, 61 is a limiting ear of the clamping slider, 62 is a through hole, 7 is a sliding sleeve, and 71 is an oblique groove of the sliding sleeve.

Detailed ways

The present invention is described in detail below in conjunction with specific embodiments.

Example 1

A reaming device suitable for the end of a coiled tubing, see Figures 1 to 8, comprises an electric wrench, an adjustable reamer, a reamer positioning sleeve, a clamping seat, a locking nut, a clamping slide block, and a sliding sleeve; the left end of the adjustable reamer is connected to the electric wrench; the left part of the adjustable reamer is connected to the left end of the reamer positioning sleeve through a thread; the right end of the reamer positioning sleeve is connected to the left end of the clamping seat through a thread; a locking nut is provided on the outside of the right part of the clamping seat; three clamping seat square holes are provided on the right part of the clamping seat, and clamping slide blocks corresponding to the clamping seat square holes are provided inside the square holes of the clamping seat; the sliding sleeve is sleeved on the outside of the right part of the clamping seat.

Furthermore, a handle is provided at the left end of the adjustable reamer, and a thread is provided on the right side of the handle.

Furthermore, a thread is provided at the left end of the clamping seat, a first limiting boss is provided on the right side of the thread, and a second limiting boss is provided on the right side of the first limiting boss; the second limiting boss is higher than the first limiting boss; and the cross-section of the second limiting boss is circular.

Furthermore, the cross-section of the inner wall of the locking nut is circular; the diameter of the inner wall of the locking nut is larger than the diameter of the second limiting boss; a locking nut end face is provided at the left end of the locking nut; the inner wall diameter of the locking nut end face is smaller than the diameter of the second limiting boss; the locking nut end face is located on the left side of the second limiting boss; and a thread is provided on the inner wall of the locking nut.

Furthermore, the upper surface of the clamping slider is an inclined surface, and the inclined surface has a downward slope from left to right; a clamping slider limiting ear is provided at the upper left end of the clamping slider; a through hole is provided at the lower part of the clamping slider; the top view of the clamping slider is a square dumbbell shape; the cross-section of the lower end surface of the clamping slider is 165 ^° .

Furthermore, the outer wall of the left end of the sliding sleeve is provided with a thread corresponding to the inner wall thread of the locking nut; the inner wall of the left end of the sliding sleeve is provided with an oblique sliding sleeve groove corresponding to the clamping slider, the inclined surface of the oblique sliding sleeve groove contacts the inclined surface of the clamping slider, and the diameter of the inner wall of the sliding sleeve gradually decreases from left to right.

Example 2

This embodiment provides an installation method for a reaming device applicable to a coiled tubing end:

Place the clamping slider in the square hole of the clamping seat; then put the sliding sleeve on the right part of the clamping seat, at this time, the inclined surface of the clamping slider contacts the inclined surface of the inclined groove of the sliding sleeve, and the clamping block limiting ear on the upper left end of the clamping slider prevents the clamping slider from falling from the square hole of the clamping seat; insert the left end of the clamping seat from the right end of the locking nut, at this time the second limiting boss is stuck at the end face of the locking nut, and the locking nut and the sliding sleeve are also in threaded contact; the adjustable reamer enters from the right end of the reamer positioning sleeve, the tool handle passes through the reamer positioning sleeve, and the left part of the adjustable reamer is threadedly connected with the left end of the reamer positioning sleeve; the right end of the reamer positioning sleeve is threadedly fixed to the left end of the clamping seat; the adjustable reamer is installed on the electric wrench through the tool handle.

Example 3

This embodiment provides a method for using a reaming device suitable for a coiled tubing end, comprising the following steps:

(1) Insert the coiled tubing from the right end of the clamping seat and place it between the three clamping sliders;

(2) Push the coiled tubing to the left so that the coiled tubing orifice contacts the right end of the adjustable reamer (2);

(3) Place the right end of the adjustable reamer into the orifice of the coiled tubing;

(4) Tighten the locking nut to drive the sliding sleeve to move to the left, so that the clamping slider moves toward the center line of the clamping seat and gradually clamps the coiled tubing;

(5) Fixing the reamer positioning sleeve;

(6) Start the electric wrench to rotate the adjustable reamer relative to the reamer positioning sleeve;

(7) Under the action of the thread at the connection between the adjustable reamer and the reamer positioning sleeve, the adjustable reamer moves to the right to ream a hole in the coiled tubing.

The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific implementation of the present invention cannot be limited to these descriptions. For ordinary technicians in the field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims (5)

1. Reaming device suitable for coiled tubing pipe end, its characterized in that: the adjustable reamer comprises an electric spanner (1), an adjustable reamer (2), a reamer positioning sleeve (3), a clamping seat (4), a locking nut (5), a clamping sliding block (6) and a sliding sleeve (7); the left end of the adjustable reamer (2) is connected with the electric wrench (1); the left part of the adjustable reamer (2) is connected with the left end of the reamer positioning sleeve (3) through threads; the right end of the reamer positioning sleeve (3) is connected with the left end of the clamping seat (4) through threads; a lock nut (5) is arranged outside the right part of the clamping seat (4); the right part of the clamping seat (4) is provided with a plurality of clamping seat square holes (41), and clamping sliding blocks (6) corresponding to the clamping seat square holes (41) are arranged in the clamping seat square holes (41); the sliding sleeve (7) is arranged on the outer side of the right part of the clamping seat (4); the left end of the clamping seat (4) is provided with a thread, the right side of the thread is provided with a first limit boss (42), and the right side of the first limit boss (42) is provided with a second limit boss (43); the second limit boss (43) is higher than the first limit boss (42); the section of the second limiting boss (43) is circular, and the number of the square holes (41) of the clamping seat is determined according to actual needs; the upper surface of the clamping sliding block (6) is an inclined surface, and the inclined surface is a downward slope trend from left to right; the upper part of the left end of the clamping slide block (6) is provided with a clamping slide block limiting lug (61); the lower part of the clamping sliding block (6) is provided with a through hole (62); the top view of the clamping sliding block (6) is square dumbbell-shaped; the section of the lower end surface of the clamping sliding block (6) is 165 ⁰; the outer wall of the left end of the sliding sleeve (7) is provided with threads corresponding to the threads of the inner wall of the locking nut (5); the inner wall of the left end of the sliding sleeve (7) is provided with a sliding sleeve inclined groove (71) corresponding to the clamping slide block (6), and the inclined surface of the sliding sleeve inclined groove (71) is in inclined contact with the inclined surface of the clamping slide block (6); the diameter of the inner wall of the sliding sleeve (7) is gradually reduced from left to right.

2. A reaming device for a coiled tubing end according to claim 1, wherein: the left end of the adjustable reamer (2) is provided with a cutter handle (21), and the right surface of the cutter handle (21) is provided with threads.

3. A reaming device for a coiled tubing end according to claim 1, wherein: the section of the inner wall of the lock nut (5) is circular; the diameter of the inner wall of the lock nut (5) is larger than that of the second limit boss (43); the left end of the lock nut (5) is provided with a lock nut end face (51); the inner wall of the end face (51) of the lock nut is smaller than the second limit boss (43); the end face (51) of the lock nut is positioned at the left side of the second limit boss (43); the inner wall of the lock nut (5) is provided with threads.

4. A reaming device for a coiled tubing end according to claim 3, wherein: when in installation, the clamping sliding block (6) is placed in the square hole (41) of the clamping seat; then the sliding sleeve (7) is sleeved on the right part of the clamping seat (4), at the moment, the inclined surface of the clamping slide block (6) is contacted with the inclined surface of the inclined groove (71) of the sliding sleeve, and the clamping block limiting lug (61) at the upper part of the left end of the clamping slide block (6) prevents the clamping slide block from falling from the square hole (41) of the clamping seat; inserting the left end of the clamping seat (4) from the right end of the lock nut (5), wherein the second limiting boss (43) is clamped on the right side of the end face (51) of the lock nut, and the lock nut (5) is in threaded contact with the sliding sleeve (7); the adjustable reamer (2) enters from the right end of the reamer positioning sleeve (3), the cutter handle (21) penetrates through the reamer positioning sleeve (3), and the left part of the adjustable reamer (2) is in threaded connection with the left end of the reamer positioning sleeve (3); the right end of the reamer positioning sleeve (3) is fixed with the left end of the clamping seat (4) through threads; the adjustable reamer (2) is arranged on the electric spanner through the cutter handle (21).

5. A method of using a reaming device as defined in any one of claims 1 to 4 for a coiled tubing end, comprising the steps of:

(1) Inserting the continuous oil pipe from the right end of the clamping seat (4) and arranging the continuous oil pipe in the middle of a plurality of clamping sliding blocks (6);

(2) Pushing the continuous oil pipe leftwards to enable the pipe orifice of the continuous oil pipe to be in contact with the right end of the adjustable reamer (2);

(3) Placing the right end of the adjustable reamer (2) into a mouth of a coiled tubing;

(4) The locking nut (5) is screwed to drive the sliding sleeve to move leftwards, so that the clamping sliding block (6) moves towards the central line of the clamping seat (4) to gradually clamp the continuous oil pipe;

(5) A fixed reamer positioning sleeve (3);

(6) Starting an electric wrench (1) to enable the adjustable reamer (2) to rotate relative to the reamer positioning sleeve (3);

(7) Under the action of the screw thread at the joint of the adjustable reamer (2) and the reamer positioning sleeve (3), the adjustable reamer (2) moves rightwards to ream the continuous oil pipe.