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Hydraulic circumferential torque impact generator

A generator and hydraulic technology, which is used in drilling driving devices, drilling equipment, earth-moving drilling and other directions in the wellbore, can solve the problems of inconvenient installation and disassembly of the anti-drop device, and achieve improved service life and high service life. Effect

Active Publication Date: 2015-04-22
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the installation and disassembly of the anti-dropping device is inconvenient, and it uses vulnerable parts such as springs

Method used

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  • Hydraulic circumferential torque impact generator
  • Hydraulic circumferential torque impact generator
  • Hydraulic circumferential torque impact generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The hydraulic circumferential torque impact generator includes a casing head 1 , a casing 3 , a screen tube 7 , a circulation starter 6 and a throttle plug 8 . The housing 3 is provided with an assembly kit 4 . The assembly set 4 is in the shape of a cylinder, and the outer circumference of the assembly set 4 is symmetrically provided with a circulation starter rotating the diversion groove 28 clockwise and a circulation starter rotating the diversion groove 40 counterclockwise, and the circulation starter rotating the diversion groove 28 clockwise and circulation starter counterclockwise rotation diversion groove 40 is respectively provided with diversion holes 27; on the inner wall of the circumference of the assembly 4 is symmetrically provided with discharge grooves 26, and on the inner wall of the assembly 4 between the discharge grooves 26 is symmetrically shaped An impact hammer head groove 34 is provided.

[0039] The end of the housing 3 at one end of the asse...

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Abstract

The invention relates to a hydraulic circumferential torque impact generator and belongs to the field of underground drilling speed-improving tools in the petroleum drilling process. The impact generator comprises a housing head, a housing, a screen pipe, a circulation starter and an orifice plug. An assembly sleeve is arranged in the housing, an impact hammer is assembled in the assembly sleeve, the screen pipe is arranged in the impact hammer, the circulation starter is installed on the screen pipe through a screen pipe sliding bearing, and a seal piece is installed on one side of the impact hammer and a port of the circulation starter and is tightly fit with the impact hammer and the port of the circulation starter. A sand removal sleeve is installed in the housing between the seal piece and an anti-drop block through a positioning sleeve, and the orifice plug is installed in the positioning sleeve on one side of the sand removal sleeve through a housing head sliding bearing. The impact generator produces high-frequency low-amplitude torque impact through the impact hammer to improve mechanical drilling speed, and the service life of a well drilling tool is prolonged. The problem that an existing torque impact device is unreasonable in structural design and accordingly the service life of the drilling tool is short is solved. The hydraulic circumferential torque impact generator is especially suitable for petroleum drilling.

Description

technical field [0001] The invention relates to a hydraulic circumferential torque impact generator, which belongs to the field of downhole drilling speed-increasing tools in petroleum drilling engineering. Background technique [0002] The stick-slip vibration will inevitably occur during the drilling process of the drill bit. At the same time, with the continuous increase of oil and gas exploration, especially the development of shale gas, the proportion of horizontal wells, deep wells and ultra-deep wells in oil drilling The proportion is getting bigger and bigger, which makes drilling more difficult, which makes this phenomenon more and more serious. The stick-slip vibration is a common and important factor that easily causes the failure of the drilling tool and reduces the ROP during the drilling process. This phenomenon is especially obvious when drilling deep hard formations. Experimental studies and theory have shown that stick-slip vibrations can be suppressed by h...

Claims

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Application Information

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IPC IPC(8): E21B4/14
CPCE21B4/14
Inventor 李美求陈元邢台李宁李海欣曹宇
Owner YANGTZE UNIVERSITY
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