CN-121993105-A - Anchoring mechanism of cleaner for inner wall of drill rod

CN121993105ACN 121993105 ACN121993105 ACN 121993105ACN-121993105-A

Abstract

The invention provides an anchoring mechanism of a cleaner on the inner wall of a drill rod, which comprises a stroke component and an anchoring component, wherein the stroke component comprises a supporting frame which is arranged in a V shape, a reset spring is arranged between the supporting frames, a compression counter is arranged on the reset spring, one end of the supporting frame is rotationally connected with the inner wall of a fixed cylinder, the other end of the supporting frame is provided with a stroke wheel, the stroke wheel stretches out of the fixed cylinder to be in contact with the inner wall of the drill rod, the outer edge of the stroke wheel is provided with a permanent magnet, a Hall sensor which is matched with the permanent magnet is arranged on the supporting frame, the anchoring component comprises a magnetic slip, a compression spring and an electromagnet, the compression spring and the electromagnet are positioned in the fixed cylinder, the electromagnet is positioned in the compression spring, the magnetic slip is arranged at two ends of the radially arranged compression spring, the electromagnet is powered on/off, the magnetic slip slides into/stretches out of the fixed cylinder, and the cleaner on the inner wall of the drill rod is not fixed/fixed on the inner wall of the drill rod. The invention has the advantages that the cleaner on the inner wall of the drill rod can be fixed in the drill rod, and meanwhile, the travel distance can be obtained.

Inventors

XIAO ZHOU
ZHUO YUN
XU FEIFAN
XU JIANCHAO
YAN XIAOBING
LIAN TAIWEI
LIANG SHUANG
MA WENSHENG
HE CHAO
ZHENG KAIZHONG

Assignees

中国石油天然气集团有限公司
中国石油集团川庆钻探工程有限公司

Dates

Publication Date: 20260508
Application Date: 20241104

Claims (10)

1. An anchoring mechanism for a drill pipe inner wall cleaner, characterized in that the anchoring mechanism comprises a stroke assembly and an anchoring assembly, wherein, The stroke component and the anchoring component are arranged in a fixed cylinder of the drill rod inner wall cleaner; The stroke component comprises a supporting frame which is arranged in a V shape, a return spring is arranged between the supporting frames, and a compression counter is arranged on the return spring; one end of the support frame is rotationally connected with the inner wall of the fixed cylinder, and the other end of the support frame is provided with a travel wheel which extends out of the fixed cylinder to be in contact with the inner wall of the drill rod; The anchoring assembly comprises a magnetic slip, a compression spring and an electromagnet, wherein the compression spring and the electromagnet are positioned in the fixed cylinder, the electromagnet is positioned in the compression spring, the compression spring is arranged along the radial direction of the fixed cylinder, the magnetic slip is arranged at two ends of the compression spring, the electromagnet is powered on/off, the magnetic slip slides into/out of the fixed cylinder, and the cleaner on the inner wall of the drill rod is not fixed on the inner wall of the drill rod.
2. The drill pipe inner wall cleaner anchoring mechanism according to claim 1, wherein the V-shaped valley bottom end of the support frame is rotatably connected with the inner wall of the fixed cylinder through a bearing.
3. The anchoring mechanism for the inner wall cleaner of drill pipe according to claim 1 or 2, wherein the support frames are provided with fixing posts on both sides facing each other, and both ends of the return spring are fixed to the fixing posts, respectively.
4. The drill pipe inner wall cleaner anchoring mechanism of claim 1, wherein the travel wheel comprises a rubber wheel.
5. The drill pipe inner wall cleaner anchoring mechanism of claim 1 or 4, wherein the stroked wheel outer edge is provided with anti-slip teeth.
6. The anchoring mechanism of the inner wall cleaner of the drill rod according to claim 1, wherein slip extending holes are formed in two opposite side walls of the fixed cylinder, and the magnetic slips are slidably arranged in the slip extending holes.
7. The drill pipe inner wall cleaner anchoring mechanism of claim 6, wherein a cover plate is disposed in the slip extension hole.
8. The drill pipe inner wall cleaner anchoring mechanism of claim 1, wherein the magnetic slip outer surface is provided with a cleat.
9. The anchoring mechanism of the inner wall cleaner of the drill rod according to claim 1, wherein a travel limit groove is formed on a wall surface of the fixed cylinder corresponding to the position of the travel wheel.
10. The drill pipe inner wall cleaner anchoring mechanism of claim 1, wherein a sealing plug is disposed between the travel assembly and the anchoring assembly.

Description

Anchoring mechanism of cleaner for inner wall of drill rod Technical Field The invention relates to the technical field of petroleum and natural gas drilling engineering, in particular to an anchoring mechanism of a cleaner on the inner wall of a drill rod. Background In the drilling process of an oil-gas well, various working conditions such as drilling tool changing, short lifting, well dredging and the like relate to the lifting operation, in order to keep the safety of driller operation and clean of the drilling floor, the drill rod is usually required to be cleaned in the lifting process, and the outer wall of the drill rod is cleaned at present, however, due to the lack of the inner wall cleaning technology of the drill rod, the slurry on the drilling floor is still spread in the lifting process. The existing domestic and foreign drill rod cleaners mainly comprise two main types of drill rod external cleaners and drill rod internal cleaners, wherein the drill rod internal cleaners are mainly passive cleaners, the cleaners are directly placed in the drill rod and slide downwards under the action of self weight of the cleaners, and mud on the inner wall of the drill rod is scraped. Existing cleaners are not able to know their position in particular within the drill pipe. Therefore, it is of great importance to provide a drill pipe inner wall cleaner anchoring mechanism. The application number is CN201610834534.3, chinese patent entitled "a crisscross inverted groove type drilling rod inner wall mud scraper", this mud scraper includes the core pipe, scraping blade group and float bowl, the core pipe is hollow standpipe, the scraping blade group comprises the scraping blade that circumference equidistance distributes around the core pipe, the scraping blade group is two-layer along core pipe axis direction upper and lower distribution, the scraping blade of adjacent scraping blade group is crisscross to be distributed, the scraping blade side view is the inverted groove form of downward open-ended bilateral symmetry, the inner edge of these symmetrical left and right sides scraping blade is respectively through support arm and core pipe outer wall connection, scraping blade group looks up the inner edge and outer fringe and is concentric circles, float bowl is the container that has the upper opening of area end, float bowl upper opening and core pipe lower opening link to each other through the screw thread, core pipe upper opening has the shutoff through threaded connection, inverted groove formula scraping blade can make drilling fluid assemble into flow down more easily, moreover, more easily pass through drilling rod joint department. However, the mud scraper is suspended on the liquid level of the drilling fluid under the action of the pontoon and cannot penetrate into a drill rod at the lower part to perform active cleaning. Once the buoyancy is lost, the fish can easily fall into the well directly, and the fish is caused. Disclosure of Invention The present invention is directed to solving one or more of the problems of the prior art, including the shortcomings of the prior art. For example, it is an object of the present invention to provide a pipe inner wall cleaner anchoring mechanism that is capable of knowing the travel of the pipe inner wall cleaner within the pipe and that can be secured within the pipe when required. In order to achieve the above purpose, according to one aspect of the present invention, there is provided an anchoring mechanism for a drill pipe inner wall cleaner, the anchoring mechanism comprising a travel assembly and an anchoring assembly, wherein the travel assembly and the anchoring assembly are disposed in a fixed cylinder of the drill pipe inner wall cleaner, the travel assembly comprises a support frame disposed in a V-shape, a return spring is disposed between the support frames, a compression counter is disposed on the return spring, one end of the support frame is rotatably connected with the inner wall of the fixed cylinder, the other end of the support frame is provided with a travel wheel, the travel wheel extends out of the fixed cylinder to contact the inner wall of the drill pipe, a permanent magnet is disposed at the outer edge of the travel wheel, a hall sensor adapted to the permanent magnet is disposed on the support frame, the anchoring assembly comprises a magnetic slip, a compression spring and an electromagnet, the compression spring and the electromagnet are disposed in the fixed cylinder, the compression spring is disposed in a radial direction of the fixed cylinder, the magnetic slip is disposed at two ends of the compression spring, the electromagnet is turned on/off, the magnetic slip slides into/extends out of the fixed cylinder, and the drill pipe inner wall cleaner is not fixed/fixed on the inner wall. According to one or more exemplary embodiments of an aspect of the present invention, the bottom ends of the V-shaped valleys of the support