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Axial double-acting hydraulic impactor

A double-acting impactor technology, which is applied in the drilling driving device, drilling equipment, earthwork drilling and production in the wellbore, can solve the problems of low drilling efficiency, short life of the drill bit, long drilling cycle, etc., to improve drilling efficiency, The effect of reducing drilling cost and improving rock breaking efficiency

Pending Publication Date: 2017-07-04
YANGTZE UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the traditional rotary drilling method encounters hard formations, the drilling efficiency will be reduced, the life of the drill bit will be shorter, the drilling cycle will be longer, and the cost will be higher; therefore, effectively increasing the drilling rate is an urgent problem to be solved in today's drilling engineering

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  • Axial double-acting hydraulic impactor
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  • Axial double-acting hydraulic impactor

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Embodiment Construction

[0031] The axial double-acting hydraulic impactor includes a casing 1 , an upper joint 2 , a lower joint 3 , a spline sleeve 4 , an impact hammer body 5 and a flow guide sleeve 6 . One end of the housing 1 is threaded with an upper joint 2; the other end of the housing 1 is equipped with a lower joint 3 through a spline sleeve 4; one end of the spline sleeve 4 is threaded with the housing 1; the other end of the spline sleeve 4 is connected to the lower joint 3 key connection.

[0032] A hammer seat 8 is installed in the casing 1 through a sleeve 7, and the hammer seat 8 and the lower joint 3 are screwed together. The casing 1 on one side of the sleeve 7 is equipped with a throttling sleeve 9 and a high-pressure shunt barrel 10 , and the throttling sleeve 9 is connected to the high-pressure shunt barrel 10 . The throttle sleeve 9 is provided with a throttle sleeve hole 11; the throttle sleeve hole 11 communicates with the center hole of the throttle sleeve 9; a flange 12 is s...

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Abstract

The invention relates to an axial double-acting hydraulic impactor and belongs to the technical field of oil and gas field drilling tools. The impactor comprises a casing, an upper connector, a lower connector, a spline housing, an impact hammer body and a flow guide sleeve, wherein a hammer base is arranged in the casing through a sleeve, an orifice sleeve and a high-pressure flow dividing barrel are arranged in the casing on one side of the sleeve, a piston rod is arranged in the high-pressure flow dividing barrel through an upper limiting base and a lower limiting base which are symmetrically arranged, a piston fixing connector is fixedly arranged at one end of the piston rod, and the impact hammer body is fixedly arranged at one end of the piston rod. When the impactor is under action of high-speed drilling fluid pressure, the piston rod can vibrate in a reciprocating, circulating and high-speed mode, and motion is transmitted to the impact hammer body, the hammer body impacts the hammer base, and finally the motion is converted into a high-frequency impact and rock breaking effect; thus, rock breaking efficiency of a drill bit is improved, and the problems that drilling efficiency is decreased, a drilling period is long and cost is high when a traditional rotary drilling method meets hard formations are solved; axial double-acting hydraulic impactor has positive popularization significance in improving drilling efficiency and reducing drilling cost.

Description

technical field [0001] The invention relates to an axial double-acting hydraulic impactor, which belongs to the technical field of oil and gas field drilling tools. Background technique [0002] Known as the "blood of the world economy", petroleum has always played a pivotal role in my country's industrial and economic development and is an important pillar of my country's national economy. In recent years, with the deepening of exploration and development of oil and gas resources, the possibility of encountering "three highs" (high hardness, high drillability and high abrasiveness) of drilling is increasing. With the rise and fall of the oil industry, how to improve drilling efficiency and reduce costs is an important issue that the oil industry needs to solve. When the traditional rotary drilling method encounters hard formations, the drilling efficiency will be reduced, the life of the drill bit will be shorter, the drilling cycle will be longer, and the cost will be hig...

Claims

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Application Information

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IPC IPC(8): E21B4/14
CPCE21B4/14Y02E10/20
Inventor 冯进魏俊何顺马良丰陈斌刘倩倩
Owner YANGTZE UNIVERSITY
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