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Drilling impact device

A percussion device and drilling technology, which can be used in the direction of drilling driving devices, drilling equipment, earthwork drilling and production in boreholes, and can solve the problems of low drilling speed and drilling efficiency of PDC bits

Active Publication Date: 2015-09-16
CNOOC RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a drilling percussion device to solve the problem that the drilling speed and drilling efficiency of the PDC drill bit in the prior art are relatively low

Method used

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] Such asfigure 1 As shown, the drilling percussion device of this embodiment includes a drill bit installation part 1, a transverse impact generating assembly and a longitudinal impact generating assembly. Wherein, the transverse impact generating assembly includes a first casing 6 and a first reversing tube 5 rotatably arranged in the first casing 6 . The longitudinal impact generating assembly includes a second housing 12 , a longitudinal impact part and a transmission part arranged in the second housing 12 , and the transmission part drives the longitudinal impact part to reciprocate axially under the drive of the first reversing tube 5 . The drilling impact device of this embodiment ...

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Abstract

The invention provides a drilling impact device, which comprises a drill bit installing part (1), a transverse impact generating assembly and a longitudinal impact generating assembly, wherein the transverse impact generating assembly comprises a first casing (6) and a first reversing pipe (5); the first reversing pipe (5) is rotatably arranged in the first casing (6); the longitudinal impact generating assembly comprises a second casing (12), a longitudinal impact part and a transmission part; the longitudinal impact part and the transmission part are arranged in the second casing (12); and the transmission part drives the longitudinal impact part to do axial reciprocating movement through being driven by the first reversing pipe (5). The technical scheme of the invention effectively solves the problems of low drilling speed and low drilling efficiency of a PDC (Polycrystalline Diamond Compact) drill bit in the prior art.

Description

technical field [0001] The invention relates to the technical field of drilling engineering, in particular to a drilling percussion device. Background technique [0002] PDC bit (polycrystalline diamond compact bit) is a drilling tool commonly used in the geological drilling industry. The existing PDC drill bits have the following two problems during use: [0003] (1) During the drilling process, the drill bit usually has the phenomenon of sticking, slipping, and sticking. Once this happens, the drill string will be twisted and deformed. When the torque accumulates to a certain extent, the external force disappears and the torque is released quickly. The drill string Torsional vibration, this kind of engineering problem is more serious, which will make the whole drilling process unstable. At the same time, the above situation will easily cause the compound cutting blades on the PDC bit to break teeth, resulting in the failure of the PDC bit, reducing the life of the bit, an...

Claims

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Application Information

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IPC IPC(8): E21B4/06
Inventor 高光亮李永安杨乃加
Owner CNOOC RES INST
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