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Gel Injection Device While Drilling

A technology of injection device and gel, which is used in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve problems such as wellbore collapse, enhance stress strength, reduce operating costs, improve drilling efficiency and drilling The effect of engineering quality

Active Publication Date: 2016-01-13
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a gel injection device while drilling, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of easy-to-collapse formations that are prone to occur during drilling. The problem of well wall collapse

Method used

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  • Gel Injection Device While Drilling

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Embodiment Construction

[0013] The present invention is not limited by the following examples, and specific implementations can be determined according to the technical solutions and actual conditions of the present invention.

[0014] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the appendix of the specification. figure 1 For example, the positional relationship of top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the description.

[0015] Below in conjunction with embodiment and accompanying drawing, the present invention is further described:

[0016] as attached figure 1 As shown, the gel-while-drilling device includes an inner cylinder 1, an upper joint 2, a lower joint 3 and an outer cylinder 4; the upper outer wall and lower outer wall of the inner cylinder 1 are respectively connected with the lower inner wall of the upper joint 2 an...

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Abstract

The present invention relates to Technical field of gel injection device in oil drilling , is a gel injection device while drilling, which includes an inner cylinder, an upper joint, a lower joint and an outer cylinder; the upper outer wall and the lower outer wall of the inner cylinder are respectively fixed and installed together with the lower inner wall of the upper joint and the upper inner wall of the lower joint , the upper inner wall and the lower inner wall of the outer cylinder are fixedly installed with the lower outer wall of the upper joint and the upper outer wall of the lower joint respectively, and an annular temporary storage chamber is formed between the inner cylinder, the outer cylinder, the upper joint and the lower joint. The present invention is reasonable and compact in structure, easy to use, injectable After the gel is flocculated in the easily collapsed section, the stress intensity of the section is enhanced, It effectively prevents downhole sticking accidents caused by downhole blocks, provides a strong downhole guarantee for subsequent safe and fast drilling, improves drilling operation efficiency and drilling engineering quality, shortens drilling operation cycle, and the present invention can be used repeatedly, which can effectively reduce operation cost.

Description

technical field [0001] The invention relates to the technical field of gel injection devices in oil drilling, and relates to a gel injection device while drilling. Background technique [0002] In the drilling operations of the petroleum industry, when drilling into fractured zone formations (coal seams, micro-fracture-developed formations) and weakly cemented formations (gravel layers), the easily collapsed formations are prone to well wall collapse during the drilling process. It is very easy for the drilling tool to be blocked or even stuck due to the blockage of the well wall. Although there are quite a lot of corresponding disposal measures for this engineering topic, the main measures are passive prevention and post-accident disposal, which seriously affect the drilling efficiency and drilling efficiency. quality. Contents of the invention [0003] The invention provides a gel injection device while drilling, which overcomes the above-mentioned deficiencies in the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22
Inventor 张彦龙田军胡挺王超赵磊李振兴
Owner BC P INC CHINA NAT PETROLEUM CORP
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