Safety joints for underground construction
A safety joint and joint connection technology, which is applied to drilling equipment, earthwork drilling, drill pipe, etc., can solve the problems of oil wells not working normally, economic loss, troubles of getting out of jams, etc., so as to achieve reasonable force, reduce workload and cost cheap effect
Active Publication Date: 2018-03-20
东营市航宇工贸有限责任公司
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Problems solved by technology
If the above-mentioned problems occur when using this patented technology or a safety joint with similar principles, it will directly cause the oil well to be stuck, which will bring great trouble to the unstuck, and will cause the oil well to fail to work normally for a long time, causing great economic losses.
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[0046] The present invention will be further described below in conjunction with accompanying drawing.
[0047] Such as figure 1 , image 3 with Figure 4 As shown, the present invention discloses a safety joint for underground construction. The safety joint for underground construction includes an upper joint 1, a lower joint 2 and a positioning device 3. The upper joint 1 and the lower joint 2 are arranged correspondingly. The positioning device 3 is fixedly arranged on the upper joint 1 and corresponds to the lower joint 2.
[0048] Such as image 3 , Figure 4 , Figure 5 , Image 6 , Figure 9 , Figure 10 with Figure 11 As shown, the upper joint 1 includes an upper joint connecting part 11, an upper joint middle part 12, an upper twist key block 13, a positioning device installation part 14, a positioning device installation groove 15, a first sealing ring 16, a second sealing ring 17 and an upper Joint through hole 18, the upper joint connecting part 11, the ...
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The invention discloses a safety joint for underground construction. The safety joint for underground construction comprises an upper joint (1), a lower joint (2) and a locating device (3), wherein the upper joint (1) and the lower joint (2) are correspondingly arranged; the upper joint (1) comprises an upper joint connecting part (11), an upper joint middle part (12), a locating device mounting part (14) and a locating device mounting slot (15); and the locating device (3) comprises a compression key block (31), a spring (32), a connecting base (33), a connecting rod (34), a motor (35), a battery (36) and a pressure sensor (37). The safety joint for underground construction can meet requirements of coiled tubing well repairing operation; operation is simple and reliable, workload can be reduced, working efficiency can be effectively improved during deep well operation, and operation difficulty is lowered; automatic separation of the upper joint from the lower joint is realized, and working efficiency and reliability of the whole device are improved; and the overall design is simple and compact, cost is low, and the stability is good.
Description
technical field [0001] The invention relates to a downhole operation device, in particular to a safety joint for downhole construction. Background technique [0002] In order to enhance the safety of construction during oil production workover, fishing and other operations, safety joints are generally used at the lower part of the construction string to connect with downhole tools. The safety joint is a kind of safety tool that is easy to release and buckle, which is connected to the pipe string in the well. The safety joint is installed at the position where the pipe string needs to be disengaged. It can transmit torque and withstand various composite stresses together with the pipe string. Provide protection tools for downhole accidents. [0003] In the prior art, when the pipe is stuck, mechanical rotation is usually used to separate the male joint from the female joint, the female joint connected to the fishing tool remains in the well, the male joint comes out of the ...
Claims
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IPC IPC(8): E21B17/06
CPCE21B17/06
Inventor 乔锦娣
Owner 东营市航宇工贸有限责任公司