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A screw type hydraulic impactor wellhead testing system

A technology of hydraulic impactor and testing system, which is applied in the field of oil and gas drilling, and can solve problems such as wellhead performance testing of screw hydraulic impactors

Active Publication Date: 2019-11-12
CNPC BOHAI DRILLING ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is no related test system at home and abroad to realize the wellhead performance test of the screw hydraulic impactor

Method used

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  • A screw type hydraulic impactor wellhead testing system

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Embodiment Construction

[0012] The present invention will be specifically described below in conjunction with the accompanying drawings.

[0013] Such as figure 1 As shown, the screw type hydraulic impactor wellhead testing system of the present invention includes a rotating central tube 1, a clamping cover 2, a fixing bolt 3, an upper ball 4, a lower ball 5, a support cylinder 6, a sensor system 7, and a support rod 8 , fixed nut 9, spring 10, base 11, load cell 12, data acquisition system 13 and computer 14; The protruding fixed blocks 15, four protruding fixed blocks 15 just sit in the four holes on the wellhead turntable, the upper end surface of the base 11 is fixed with a helical integral spring 10 with a hole in the middle, and the spring 10 is located in the central through hole 16 Above, the load cell 12 is fixed on the bottom surface of the base 11; the upper end of the spring 10 is fixed with a support tube 6, the support tube 6 is a cylindrical structure with a through hole in the middle...

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Abstract

The invention discloses a wellhead test system for a screw hydraulic impactor. The wellhead test system includes a rotating center pipe, a clamp cover, fixing bolts, upper balls, lower balls, a support cylinder, a sensor system, a support rod, fixing nuts, a spring, a pedestal, a weighing sensor, a data acquisition system and a computer. The system can realize wellhead vibration characteristic tests for a screw hydraulic impactor and test parameters include vibration frequency, vibration displacement, vibration acceleration and vibration impact force, so the system provides a theoretical basisand guidance for judging whether the screw hydraulic impactor meets conditions of reaching into a well.

Description

technical field [0001] The invention relates to the field of oil and gas drilling, in particular to a screw type hydraulic impactor testing system. Background technique [0002] With the deepening of oilfield development, there are more and more deep wells, ultra-deep wells and wells with complex structures. However, during the drilling process of deep and ultra-deep wells, due to the high rock hardness, strong abrasiveness, and poor drillability, the drilling speed of conventional screw drilling tools and PDC bits is extremely low. In order to solve the problem of low ROP in deep and ultra-deep wells in hard rock formations, screw-type hydraulic impactors with axial vibration functions have been developed at home and abroad. This tool integrates the axial impact vibration function into the conventional downhole dynamic drilling tool to form an integrated drilling tool, which can generate high-frequency and low-amplitude impact vibration energy, which neither affects the no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
CPCG01M99/005
Inventor 王建龙郑锋郑永峰张雯琼陈佳杰
Owner CNPC BOHAI DRILLING ENG
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