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Safety joint used for petroleum drilling

A technology for safety joints and oil drilling, which is applied to drilling equipment, drill pipes, drill pipes, etc., and can solve problems such as insufficient stability of connection and separation, failure, and insufficient connection stability

Inactive Publication Date: 2018-09-11
李志磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing oil drilling safety joint design is relatively traditional, the male joint and the female joint are connected by wide sawtooth thread, the connection is not stable enough, and the stability of connection and separation is not enough, and failures often occur during the working process

Method used

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  • Safety joint used for petroleum drilling

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specific Embodiment approach

[0015] like figure 1 As shown, the oil drilling safety joint includes a male joint 1 and a female joint 2 that are transitionally fitted with each other. The end of the male joint 1 away from the female joint 2 has a frustum-shaped threaded hole 5, and the end of the female joint 2 away from the male joint 1 has a frustum-shaped threaded hole. The threaded boss 4, the size of the threaded boss 4 is the same as the threaded hole 5, the threaded boss 4 and the threaded hole 5 are screwed together, the side of the male connector 1 is symmetrically opened with two male connector jacks 6, and the female connector 2 corresponds to the two The male connector jack 6 is provided with two female connector jacks 7 with the same diameter. The male connector 1 is equipped with a remote control push rod motor 3 inside. Hole 6 and female connector socket 7.

[0016] The male joint 1, the female joint 2, and the threaded boss 4 are all made of stainless steel, which is durable and has good c...

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Abstract

The invention discloses a safety joint used for petroleum drilling, relating to the field of petroleum machinery and equipment. During application of the safety joint used for petroleum drilling, a remote-control push rod motor operates two telescopic rods to respectively insert into a male joint jack and a female joint jack corresponding on two sides such that the male joint and the female jointare stably connected. A stable rigid integral body is formed by the male joint and the female joint. A thread boss of the male joint is in threaded connection with a drill bit. A thread hole of the female joint is in threaded connection with a drill rod. Therefore, the drill rod at the upper part is protected. When a drilling tool gets stuck and is buried, the remote-control push rod motor can beremotely controlled such that the two telescopic rods exit the male joint jack and a female joint jack. Therefore, the male joint is instantly separated from the male joint. The male joint is convenient to detach from the position of the safety joint and the drill rod is extracted. The drill rod can be safely fished out in order to ensure that machine tools left in the interior of petroleum drilling as few as possible.

Description

technical field [0001] The invention relates to the field of petroleum machinery and equipment, in particular to a petroleum drilling safety joint. Background technique [0002] The oil drilling safety joint is a joint that the oil drill bit is connected to the bottom of the drill string to protect the upper drill pipe when drilling into special formations or special operations. Connected by coarse buckle square thread, oil drilling safety joint is the most easy to untie link in the whole drill string. The existing oil drilling safety joints are relatively traditional in design. The male joint and the female joint are connected by wide sawtooth threads. The connection stability is not enough, and the stability of connection and separation is not enough, and failures often occur during the working process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a safety joint for oil drilling. The male joint and the fema...

Claims

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Application Information

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IPC IPC(8): E21B17/06E21B17/042
CPCE21B17/06E21B17/0426
Inventor 李志磊
Owner 李志磊
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