CN-121989139-A - Rapid trimming tool and trimming method for welding lines in continuous pipe

CN121989139ACN 121989139 ACN121989139 ACN 121989139ACN-121989139-A

Abstract

The invention discloses a rapid trimming tool and a trimming method for a welding line in a continuous pipe, wherein the rapid trimming tool comprises a positioning gland, a sheath, a locking piece, a guide piece, a polishing piece and a driving piece, wherein the first end of the sheath stretches into the continuous pipe, the lower part of the second end of the sheath can be in butt joint with the continuous pipe, the positioning gland is connected with the first end of the sheath, the lower end of the positioning gland can be in butt joint with the continuous pipe, the positioning gland is provided with a welding line groove, the welding line of the continuous pipe can be accommodated in the welding line groove, the locking piece is arranged between the upper part of the second end of the sheath and the continuous pipe, the locking piece can be matched with the positioning gland to lock the sheath and the continuous pipe, the guide piece is arranged in the sheath, the guide piece is provided with an accommodating hole, one end of the polishing piece penetrates through the accommodating hole and can be in butt joint with the welding line of the continuous pipe, the other end of the polishing piece is connected with the driving piece, and the driving piece is used for driving the polishing piece to rotate so as to polish and remove the welding line of the continuous pipe. The efficiency and quality of the weld joint finishing of the continuous pipe can be effectively improved.

Inventors

LV WEIPING
ZHOU SHIJIE
FU YUE
ZHANG YAN
REN BIN
LIU JIAWEI
XIN YONGAN
ZHANG ZHENG
Zhong ju
ZHU YE

Assignees

中国石油天然气集团有限公司
中国石油集团工程技术研究院有限公司
中石油江汉机械研究所有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (11)

1. The rapid trimming tool for the welding line in the continuous pipe is characterized by comprising a positioning gland, a sheath, a locking piece, a guide piece, a polishing piece and a driving piece; The first end of the sheath extends into the continuous pipe, and the lower part of the second end of the sheath can be abutted with the continuous pipe; the positioning gland is connected to the first end of the sheath, the lower end of the positioning gland can be abutted against the continuous pipe, the positioning gland is provided with a weld groove, and the weld of the continuous pipe can be accommodated in the weld groove; the locking piece is arranged between the upper part of the second end of the sheath and the continuous pipe, and can be matched with the positioning gland to lock the sheath and the continuous pipe; the guide piece is arranged in the sheath and is provided with an accommodating hole; the polishing piece passes through the accommodating hole, one end of the polishing piece can be abutted with the welding seam of the continuous pipe and tangent to the arc surface at the bottom end of the continuous pipe, and the other end of the polishing piece is connected with the driving piece; The driving piece is used for driving the polishing piece to rotate so as to polish and remove the welding seam of the continuous pipe.
2. The rapid tooling for trimming an inner weld of a coiled tubing according to claim 1, wherein the upper portion of the second end of the sheath is provided with a first planar surface and a first inclined surface engaged with the first planar surface, the first inclined surface being inclined downwardly in a direction approaching the first planar surface; the locking piece comprises a stress plate and a moving plate connected with the stress plate, and the moving plate is arranged towards the first inclined plane; the bottom end of the moving plate is a second plane and a second inclined plane connected with the second plane, the second plane is matched with the first plane, and the second inclined plane is matched with the first inclined plane; The top end of the moving plate is a first arc surface, and the radian of the first arc surface is smaller than that of the inner surface of the continuous pipe; the moving plate can move upwards along the first inclined plane under the condition that the stress plate receives a first acting force so as to be matched with the positioning gland to lock the sheath and the continuous pipe, or can move downwards along the first inclined plane under the condition that the stress plate receives a second acting force so as to unlock the sheath and the continuous pipe, and the direction of the first acting force is opposite to that of the second acting force.
3. The rapid tooling for repairing an inner weld of a coiled tubing of claim 2, further comprising a stop member coupled to the sheath; The moving plate is provided with a through waist-shaped through hole; The limiting piece passes through the kidney-shaped through hole; the moving distance of the moving plate is the distance between the limiting piece and the end part of the kidney-shaped through hole.
4. The rapid tooling for repairing an inner weld of a coiled tubing of claim 2, wherein the upper end surface of the force-bearing plate is higher than the upper end surface of the coiled tubing.
5. The rapid tooling for repairing the inner weld of the continuous pipe according to claim 1, wherein the sheath is internally provided with a square hole penetrating along the axial direction; The bottom end of the part of the sheath extending into the continuous pipe is penetrated; the cross-sectional shape of the guide piece is consistent with the cross-sectional shape of the square hole; The two sides of the upper part of the guide piece are provided with first fillets.
6. The rapid tooling for trimming an inner weld of a coiled tubing according to claim 5, wherein the lower portion of the guide is symmetrically provided with two chamfer surfaces, the chamfer surfaces being inclined downward from the outer side to the inner side of the guide; A second round angle is formed on one side, facing the continuous pipe, of the two chamfer surfaces, and the radian of the second round angle is smaller than that of the first round angle; The center of the lower part of the guide member is provided with the receiving hole.
7. The rapid tooling for repairing an inner weld of a coiled tubing of claim 6, further comprising an elastic member; The elastic piece is connected between the guide piece and the driving piece and is used for pushing the guide piece and the polishing piece to synchronously move; the bottom of the accommodating hole is provided with a slot, and the welding seam of the continuous pipe can be accommodated in the slot.
8. The rapid tooling for repairing a weld in a coiled tubing of claim 1 or 6, wherein the grinding member comprises a grinding head and a long rod connected to the grinding head; The long rod passes through the accommodating hole and is connected with the driving piece; The polishing head can be abutted with the welding seam of the continuous pipe.
9. The rapid tooling for trimming an inner weld of a coiled tubing of claim 5, wherein the front end of the locating gland is cylindrical in shape and the outer diameter of the front end of the locating gland is less than the inner diameter of the coiled tubing; The rear end of the positioning gland is provided with a limiting protrusion, the cross section shape and the size of the limiting protrusion are consistent with those of the square hole, and the limiting protrusion can be clamped with the square hole; The lower end of the limiting protrusion is provided with the welding seam groove.
10. The rapid tooling for repairing a weld in a coiled tubing of claim 9, further comprising a gland screw; A first screw hole is formed in the first end of the sheath; The positioning gland is provided with a second screw hole corresponding to the first screw hole; The gland screw may pass through the second screw hole and be connected with the first screw hole.
11. A method of trimming a weld in a coiled tubing, comprising the steps of: Connecting a positioning gland with a sheath, aligning a weld groove of the positioning gland with a weld of a continuous pipe, and inserting the sheath into the continuous pipe until the lower part of the second end of the sheath is abutted with the continuous pipe; The sheath and the continuous pipe are locked by matching the locking piece with the positioning gland; passing a polishing member through the receiving hole of the guide member, and connecting the polishing member with the driving member; Placing the guide piece in the sheath, so that one end of the polishing piece is abutted with the welding seam of the continuous pipe; and starting the driving piece, driving the polishing piece to polish and remove the welding seam of the continuous pipe by the driving piece, and holding the driving piece to move towards the first end of the sheath until polishing is completed.

Description

Rapid trimming tool and trimming method for welding lines in continuous pipe Technical Field The invention relates to the technical field of maintenance and repair of continuous pipes, in particular to a rapid trimming tool and a trimming method for welding seams in continuous pipes. Background With the rapid development of coiled tubing operation technology, the coiled tubing operation technology is also increasingly used in the oilfield. Connectors have become an essential part for achieving a connection between a tool and a coiled tubing or two sections of coiled tubing, playing a significant role in coiled tubing operations. In order to improve the trafficability of a working tool or a coiled tubing at a necking part under a well or to realize the requirement that two sections of coiled tubing are mechanically connected and then pass through an injection head, an inner connector is a common choice for coiled tubing operation, but a continuous raised burr is arranged at a welding joint along the axial direction in a conventional coiled tubing, and the inner connector is required to be mounted to realize the sealing between the connector and an inner hole of the coiled tubing, so that the raised burr of the welding joint at a section close to a mouth of the coiled tubing is required to be removed, and the inner wall of the part of the coiled tubing from which the raised burr of the welding joint is removed is consistent with the curvature of the inner wall of other tubing bodies in position and has a smooth surface. The conventional method for removing the raised burrs of the inner weld joint is to connect a grinding wheel polishing head with the diameter slightly smaller than the inner diameter of the continuous pipe with an electric hand drill, and the polishing head is propped against the raised burrs of the inner weld joint to polish after the electric hand drill is started, so that the method is difficult to operate under the limitation of field space, the removal speed is low, the operation level requirement on an operator is high, the polishing head and the inner diameter of the continuous pipe have a diameter difference, and once the force or the feeding amount is controlled improperly, the pipe wall is easily damaged, so that a tool which is convenient for field operation and high in finishing speed is needed, and the field construction efficiency and quality are improved. Disclosure of Invention In order to reduce the operation difficulty of removing welding ribs of a continuous pipe and effectively improve the efficiency and quality of weld joint trimming of the continuous pipe, the invention provides a rapid trimming tool and a trimming method for weld joints in the continuous pipe. In a first aspect, the embodiment of the invention provides a rapid trimming tool for a welding seam in a continuous pipe, which comprises a positioning gland, a sheath, a locking piece, a guide piece, a polishing piece and a driving piece; The first end of the sheath extends into the continuous pipe, and the lower part of the second end of the sheath can be abutted with the continuous pipe; the positioning gland is connected to the first end of the sheath, the lower end of the positioning gland can be abutted against the continuous pipe, the positioning gland is provided with a weld groove, and the weld of the continuous pipe can be accommodated in the weld groove; the locking piece is arranged between the upper part of the second end of the sheath and the continuous pipe, and can be matched with the positioning gland to lock the sheath and the continuous pipe; the guide piece is arranged in the sheath and is provided with an accommodating hole; the polishing piece passes through the accommodating hole, one end of the polishing piece can be abutted with the welding seam of the continuous pipe and tangent to the arc surface at the bottom end of the continuous pipe, and the other end of the polishing piece is connected with the driving piece; The driving piece is used for driving the polishing piece to rotate so as to polish and remove the welding seam of the continuous pipe. Optionally, a first plane and a first inclined plane connected with the first plane are arranged at the upper part of the second end of the sheath, and the first inclined plane is inclined downwards in a direction approaching to the first plane; the locking piece comprises a stress plate and a moving plate connected with the stress plate, and the moving plate is arranged towards the first inclined plane; the bottom end of the moving plate is a second plane and a second inclined plane connected with the second plane, the second plane is matched with the first plane, and the second inclined plane is matched with the first inclined plane; The top end of the moving plate is a first arc surface, and the radian of the first arc surface is smaller than that of the inner surface of the continuous pipe; the moving plate can move upwards along the first