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Percussion Drilling Equipment

A percussion and drilling technology, which is applied in the direction of drilling equipment, earthwork drilling, rotary combined drilling, etc., can solve problems such as welding cracking, easy cracking of welding inserts and pasting parts, and affecting the normal operation of rotary percussion drilling equipment, etc. , to achieve the effect of long service life and simple structure

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the actual application process, due to the repeated impact of the piston and the hammer, the welding and pasting parts are also prone to cracking, resulting in leakage and pressure relief.
[0006] The jet-type hydraulic impactor of rotary percussion drilling equipment is prone to seal failure or welding cracking, which affects the normal operation of rotary percussion drilling equipment, thereby affecting and restricting the service life of rotary percussion drilling equipment

Method used

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Embodiment Construction

[0028] The invention will be further described below in conjunction with the accompanying drawings.

[0029] figure 1 A percussion drilling device 10 according to the invention is schematically shown. The percussion drilling equipment 10 includes a hollow casing 15 , and a hammer 16 capable of reciprocating axially is arranged inside the casing 15 . An output shaft 11 from a power source (not shown) applying a circumferential rotational force extends into the housing 15 and terminates upstream of a hammer 16 , the upstream end of which is connected to the output shaft 11 by a power conversion mechanism 30 . The power conversion mechanism 30 is capable of converting the circumferential rotation of the output shaft 11 into the axial reciprocating motion of the hammer 16 , and the power conversion mechanism 30 will be described in detail below. An anvil 17 movable in the axial direction is arranged downstream of the hammer 16 with a certain gap with the hammer 16 , so that the ...

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Abstract

The invention relates to an impact type drilling device which comprises a shell. A punch hammer which can axially move back and forth is arranged in the shell, and the upstream end of the punch hammer is connected with a circumferentially-rotating power source through a power conversion mechanism, and in the shell, and the downstream part of the punch hammer and the hammer are provided with anvils at intervals, wherein the anvils can axially move so that axial impact force can be exerted to the anvils by the punch hammer. Axial moving limiting is achieved by the anvils through blocking structures acting on the anvils. The power conversion mechanism comprises a cylindrical connecting piece with the peripheral wall provided with a wave-shaped guide rail, and a guide pin matched with the wave-shaped guide rail, and the punch hammer is connected to the power conversion mechanism through the guide pin so that axial reciprocating moving of the punch hammer can be achieved. According to the impact type drilling device, high-frequency impact can be generated on stratum rock, the drilling rate is improved, and in addition, the impact type drilling device is simple in structure, few in part and long in service life.

Description

technical field [0001] The invention relates to a drilling equipment, in particular to a percussion drilling equipment. Background technique [0002] In the field of oil and gas drilling, with the emergence of deep wells and ultra-deep wells, the requirements for drilling equipment are also getting higher and higher. In the drilling of deep wells and ultra-deep wells, the characteristics of high hardness and poor drillability of formation rocks are becoming more and more prominent, so the requirements for drilling equipment and drilling technology are getting higher and higher. [0003] Rotary percussion drilling equipment is a kind of drilling equipment especially suitable for these situations, and one of its cores is a hydraulic jet impactor. Especially in the drilling of hard formations, the ratio of this rotary percussion drilling equipment is 50-100% higher than that of conventional rotary drilling, and the drilling efficiency is greatly improved. [0004] In the prio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B6/02
Inventor 张海平索忠伟陶兴华陈天成王甲昌张仁龙涂玉林刘鹏胡彦峰刘晓丹
Owner CHINA PETROLEUM & CHEM CORP