A downhole torque self-balancing cabled drilling tool system

A self-balancing, drilling tool technology, applied in the drilling drive device, drill pipe, drill pipe and other directions in the wellbore, can solve the problem of short lifespan of the coiled tubing, and achieve enhanced real-time monitoring and control, reduced disturbance, enhanced effect of ability

Active Publication Date: 2018-08-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since coiled tubing drilling technology does not fundamentally change the detrimental effect of reactive torque on coiled tubing, the life of coiled tubing is shorter than that of conventional drill pipe

Method used

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  • A downhole torque self-balancing cabled drilling tool system
  • A downhole torque self-balancing cabled drilling tool system
  • A downhole torque self-balancing cabled drilling tool system

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Embodiment Construction

[0025] see Figure 1 to Figure 6 As shown, the present invention proposes a downhole torque self-balancing cabled drilling tool system. The drilling tool system is composed of internal and external drill bit assemblies, power components, internal and external drill bit pressure adjustment systems, mud circulation systems and jam release systems. The torque self-balancing system of the present invention The upper drilling tool of the cable drilling system only bears the axial force, and the lower drilling tool is reversely rotated by the inner and outer drill bits to achieve torque balance. figure 2 The inner and outer drill bit assemblies shown are used for reverse rotation to cut rocks, and the surrounding rocks are required to provide a small anti-torque torque to the rocks in contact with the drill bit, so only slight disturbances are generated on the surrounding rocks. Even when drilling in broken formations, the wellbore Relatively regular and stable. The inner and oute...

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PUM

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Abstract

The invention relates to a downhole torque self-balancing cabled drilling tool system, which belongs to the technical field of drilling engineering equipment. The inner and outer double drill bits rotate reversely to crush the rock to achieve micro-disturbance drilling of the surrounding rock; the stator group and the rotor group of the power motor are used to drive the outer drill bit and the inner drill bit respectively. Torque action; the present invention integrates the power source, mud circulation system and well logging system into the drilling tool, and the ground only needs to use the drawworks equipment for lifting the drilling tool to realize normal drilling, tripping and logging while drilling, etc. Operation: When the drill is stuck, the winch lifts the drilling tool, and the drill bit rotates forward and reverse alternately to release the stuck rock particles to realize the stuck release.

Description

technical field [0001] The invention belongs to the technical field of drilling engineering equipment, and particularly relates to a downhole torque self-balancing cabled drilling tool system suitable for technical fields such as geological drilling, hydrological water well drilling, oil and gas drilling, scientific drilling, and underground building rescue drilling. Background technique [0002] During the drilling (drilling) process, the drill string is deformed into a helical shape under the action of torque, and it collides with the well wall during rotation. Wear and alternating loads can easily damage the drill string in advance, resulting in broken drilling tools, etc. The occurrence of accidents in wells has brought huge losses to the entire project. As the drilling depth increases, the length of the drill string increases, and the proportion of energy lost by the drill pipe to overcome various frictional resistances in the well increases during the process of transm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B19/084E21B4/04E21B21/12
CPCE21B4/04E21B19/084E21B21/12E21B25/00E21B10/04E21B21/08E21B4/003E21B7/00E21B47/00
Inventor 高科孙友宏王治刚赵研博坤谢晓波王海勇王晓初刘召王亚斐陈杭凯彭赛宇徐英超邢立东
Owner JILIN UNIV
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