CN-121993104-A - Automatic cleaning device for inner wall of drill rod

CN121993104ACN 121993104 ACN121993104 ACN 121993104ACN-121993104-A

Abstract

The invention provides an automatic cleaning device for the inner wall of a drill rod, which comprises a rubber fixing cylinder, a travel cylinder, a measurement and control cylinder, a grabbing cylinder and a balancing weight mounting cylinder which are sequentially arranged, wherein rubber is vulcanized outside the rubber fixing cylinder, the rubber fixing cylinder is connected with a salvaging cone, a reset spring is arranged in the rubber fixing cylinder, the travel cylinder is rotationally connected with two V-shaped connecting rods, a pre-tightening spring is connected between the connecting rods, a compression counter is arranged on the pre-tightening spring, the connecting rods extend out of the travel cylinder, a travel wheel is arranged at the extending end of the connecting rods, a permanent magnet is arranged at the outer edge of the travel wheel, a Hall sensor is arranged on the connecting rods, a travel switch connected with the Hall sensor and a circuit board is arranged in the travel cylinder, an electromagnet and a radial compression spring are arranged in the travel cylinder, magnetic slips are arranged at the two ends of the compression spring, the magnetic slips can retract into/extend out of the grabbing cylinder, an interconnected circuit board and a battery are arranged in the travel cylinder, the battery is connected with the electromagnet, and the balancing weight is arranged on the balancing weight mounting cylinder. The invention can clean the inner wall of the drill rod with high efficiency and effectively shortens the drilling period.

Inventors

YAN XIAOBING
HE CHENGCHENG
DENG HU
XU JIANCHAO
XU FEIFAN
PANG DONGXIAO
XIAO ZHOU
Yang Houtian
ZHONG KAI
ZHANG JIE

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. The automatic cleaning device for the inner wall of the drill rod is characterized by comprising a rubber fixing cylinder, a travel cylinder, a measurement and control cylinder, a grabbing cylinder and a balancing weight mounting cylinder which are sequentially arranged, The circumferential outer surface of the rubber fixing cylinder is vulcanized and glued with a plurality of cleaning rubbers, a fishing cone which is coaxially arranged is arranged in the rubber fixing cylinder, a reset spring is arranged in the rubber fixing cylinder, and the fishing cone is positioned in the reset spring; the two opposite side walls of the travel cylinder are provided with openings, two connecting rods which are rotationally connected with the travel cylinder are arranged in the travel cylinder, the two connecting rods are in V-shaped arrangement, a pre-tightening spring is connected between the two connecting rods, and a compression counter is arranged on the pre-tightening spring; The two opposite side walls of the grabbing cylinder are provided with openings, a compression spring and a plurality of electromagnets are arranged in the stroke cylinder, the compression spring is arranged along the radial direction of the grabbing cylinder, the electromagnets are positioned in the compression spring, the two ends of the compression spring are provided with magnetic slips, the electromagnets are powered on/off, and the magnetic slips retract into/extend out of the grabbing cylinder through the openings of the grabbing cylinder, so that the automatic cleaning device for the inner wall of the drill rod is not fixed on the inner wall of the drill rod; The measurement and control cylinder is internally provided with a circuit board and a battery, the battery is connected with the electromagnet, the circuit board controls the connection/disconnection of the battery and the electromagnet, and the circuit board is connected with the travel switch; The balancing weight installation cylinder is provided with a balancing weight.
2. The automatic cleaning device for the inner wall of the drill pipe according to claim 1, wherein the cleaning rubber comprises a plurality of cleaning blades, and the cleaning blades are annular.
3. The automatic cleaning device for the inner wall of the drill rod according to claim 2, wherein the cleaning rubber comprises 1-3 cleaning blades.
4. The automatic cleaning device for the inner wall of the drill rod according to claim 1, wherein a sealing ring is further arranged in the rubber fixing cylinder, the sealing ring is sleeved on the fishing cone, and the sealing ring is positioned above the reset spring.
5. The automatic drill pipe inner wall cleaning device of claim 4, wherein the sealing ring comprises an O-ring.
6. The automatic cleaning device for the inner wall of the drill rod according to claim 1, wherein friction teeth are arranged on the outer edge of the stroke wheel.
7. The automatic cleaning device for the inner wall of the drill rod according to claim 1, wherein 2-3 electromagnets which are axisymmetrically distributed are arranged in the grabbing cylinder.
8. The automatic cleaning device for the inner wall of the drill rod according to claim 1, wherein the lower end part of the balancing weight installation cylinder is processed into an arc surface.
9. The automatic cleaning device for the inner wall of the drill rod according to claim 1, wherein the balancing weight is in an outer hexagon shape and is in threaded connection with the balancing weight mounting cylinder.
10. The automatic cleaning device for the inner wall of the drill pipe according to claim 1, wherein the material of the balancing weight comprises lead.

Description

Automatic cleaning device 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 automatic cleaning device for 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, and in order to keep the safety of driller operation and the neatness of a drilling floor, a drill rod is usually required to be cleaned in the lifting operation. Drill pipe outer wall cleaning has been achieved today, however due to lack of drill pipe inner wall cleaning technology, drill floor mud is still spread throughout the tripping process. The existing cleaner in the drill rod can not realize counting to measure the stroke. Therefore, the automatic cleaning device for the inner wall of the drill rod, which can realize counting, has important significance. The application discloses a plurality of drill rod cleaners at home and abroad, which mainly comprises two main types of drill rod external cleaners and drill rod internal cleaners, wherein the drill rod external cleaners mainly comprise three types of pure mechanical cleaners, electric cleaners and hydraulic cleaners. For example, chinese patent application number CN201620190565.5, entitled "a drill rod cleaner", discloses a drill rod cleaner, which comprises two clamping platforms, wherein the two clamping platforms are all arranged in a horizontal separation track, opposite end surfaces of the two clamping platforms are respectively provided with a semi-conical groove, a brush is mounted on a concave surface of the semi-conical groove, an electromagnet is arranged at the edge of each semi-conical groove, a lifting spring is fixedly mounted on one end side surface of the two clamping platforms far away from the semi-conical groove, the other end of the lifting spring is connected with the horizontal separation track, the electromagnets are connected with a controller through wires, a water channel is arranged in each of the two clamping platforms, one end of the water channel is led to the brush, the other end of the water channel is led to the outside of the clamping platform, and the water pipe is connected. The cleaner can automatically clean the drill rod, avoids manual operation in a severe environment, and improves the cleaning efficiency of the drill rod. But the cleaner is different from the structure of the present application. 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 an automatic cleaning device for an inner wall of a drill pipe, which can efficiently clean the inner wall of the drill pipe and effectively shorten the drilling cycle. In order to achieve the above purpose, according to one aspect of the present invention, there is provided an automatic cleaning device for an inner wall of a drill pipe, the cleaning device may include a rubber fixing cylinder, a travel cylinder, a measurement and control cylinder, a gripping cylinder and a counterweight mounting cylinder, which are sequentially disposed, wherein a plurality of cleaning rubbers are vulcanized and glued on a circumferential outer surface of the rubber fixing cylinder, a fishing cone coaxially disposed is disposed in the rubber fixing cylinder, a reset spring is disposed in the rubber fixing cylinder, and the fishing cone is disposed in the reset spring; openings are formed in two opposite side walls of the travel cylinder, two connecting rods which are rotationally connected with the travel cylinder are installed in the travel cylinder, the two connecting rods are arranged in a V shape, a pre-tightening spring is connected between the two connecting rods, and a compression counter is arranged on the pre-tightening spring; the automatic cleaning device for the inner wall of the drill rod is characterized in that one end of a connecting rod extends out of an opening of a travel cylinder, a travel wheel is arranged at the extending end of the connecting rod, the travel wheel can be in contact with the inner wall of the drill rod, a permanent magnet is arranged at the outer edge of the travel wheel, a Hall sensor is arranged on the connecting rod, a travel switch is arranged in the travel cylinder, the travel switch is connected with the Hall sensor, openings are arranged on two opposite side walls of a grabbing cylinder, a compression spring and a plurality of electromagnets are arranged in the travel cylinder, the compression spring is arranged along the radial direction of the grabbing cylinder, the electromagnets are positioned in the compression spring, magnetic slips are arranged at two ends of the compression spring, the electromagnets are connected/disconnected,