Downhole auxiliary hole drilling tool

A technology for drilling tools and drilling fluids, which is applied in the direction of drilling driving devices, drilling equipment, and drill pipes in boreholes. The effect of prolonging the service life and reducing the impact

Active Publication Date: 2019-11-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the downhole auxiliary drilling tool can provide the drill bit with a high-frequency changing compound direction impact force. In addition, the downhole auxiliary drilling tool can also automatically store and release the torque exceeding the limit value during t

Method used

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  • Downhole auxiliary hole drilling tool
  • Downhole auxiliary hole drilling tool
  • Downhole auxiliary hole drilling tool

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Embodiment Construction

[0027] The present invention is introduced below by accompanying drawing.

[0028] 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 hole drilling tool. An impacting energy generator is included, and can be used for converting energy of well drilling liquid so that axial impacting energycan be generated. An impacting energy allocator is included, and can be used for allocating the axial impacting energy generated by the impacting energy generator again, an axial impacting force is converted into a composite impacting force, and therefore the impacting force changing at a high frequency in the composite direction is provided for a drill bit, and the rock breaking efficiency of the drilling tool is greatly improved and the mechanical drilling speed of the drilling tool is greatly increased. The downhole auxiliary hole drilling tool further comprises a shock absorbing twistingstabilizing device arranged between the impacting energy generator and the impacting energy allocator, the shock absorbing twisting stabilizing device can be used for lowering the axial vibration of the well drilling tool, the stick-slip phenomenon is reduced, impacting on the drill bit is reduced, and 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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IPC IPC(8): E21B4/16E21B17/07
CPCE21B4/16E21B17/07
Inventor 胡群爱曾义金崔晓杰赵晨熙赵建军马兰荣程光明孙连忠侯乃贺
Owner CHINA PETROLEUM & CHEM CORP
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