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An auxiliary downhole drilling tool

A drilling tool and drilling fluid technology, which is applied to drilling tools, driving devices for drilling in wellbore, drilling equipment, etc., can solve problems such as stick-slip, slow ROP, stall and so on.

Active Publication Date: 2020-10-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the downhole auxiliary drilling tool can also automatically store and release the torque exceeding the limit value during the drilling process, thereby effectively increasing the rock-breaking ability of the drill bit, improving the rock-breaking efficiency, and solving the problem of the drill bit in hard formations and interlayers. Drill jumping, stick-slip, "stall", slow mechanical drilling speed, etc.

Method used

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  • An auxiliary downhole drilling tool
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  • An auxiliary downhole drilling tool

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Embodiment Construction

[0030] The present invention is introduced below by accompanying drawing.

[0031] figure 1 The structure of an auxiliary downhole drilling tool 100 according to the present invention is shown. Such as figure 1 As shown, the auxiliary downhole drilling tool 100 includes an impact energy generator 110 . The impact energy generator 110 is mainly used to convert the energy of the drilling fluid to generate axial impact energy. An impact energy distributor 120 is also provided at the lower end of the impact energy generator 110. The impact energy distributor 120 is mainly used to redistribute the axial impact energy generated by the impact energy generator 110, thereby forming a and the composite impact energy of the circumferential impact energy. Through the impact energy generator 110 and the impact energy distributor 120, the downhole auxiliary drilling tool 100 can provide the drill bit with high-frequency and variable impact force in multiple directions, effectively impro...

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Abstract

The invention discloses a downhole auxiliary drilling tool. The downhole auxiliary drilling tool comprises an impact energy generator and an impact energy distributor, wherein the impact energy generator can convert the energy of drilling fluid so as to generate axial impact energy; the impact energy distributor can re-distribute the axial impact energy generated by the impact energy generator soas to form axial impact energy and circumferential impact energy, so that impact force with high-frequency variation in composite direction is provided for a drill bit, and meanwhile, the downhole auxiliary drilling tool can increase the axial impact force of the drill bit and enhance the composite impact force, so that the rock breaking efficiency and the mechanical drilling speed of the drillingtool are greatly improved. The downhole auxiliary drilling tool further comprises a shock absorber arranged between the impact energy generator and the impact energy distributor, and the shock absorber can reduce the axial vibration of the drilling tool and the impact of the drill bit, so that the service life of the drill bit is effectively prolonged.

Description

technical field [0001] The invention relates to the technical fields of petroleum industry machinery technology and drilling technology, in particular to an auxiliary downhole drilling tool. Background technique [0002] With the continuous development of oil drilling technology, many drilling tools with different functions have appeared in order to meet the needs of drilling engineering. With the rapid development of science and technology, the performance of drilling tools in the prior art has been greatly improved. [0003] However, in some special working conditions, there are still some problems. For example, when constructing in soft and hard formations or hard formations, due to the large lithology changes or high strength of such formations, the formation is soft and hard, and it is easy to induce downhole drilling tool vibration during the drilling process, resulting in the drill bit being in dynamic state for a long time. Unstable working condition. The instabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/16E21B17/07E21B12/00
CPCE21B4/16E21B12/00E21B17/07
Inventor 曾义金胡群爱赵晨熙崔晓杰赵建军马兰荣程光明孙连忠侯乃贺
Owner CHINA PETROLEUM & CHEM CORP
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