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Hydraulic driving system for driving electrode telescoping ram

A driving device and driving electrode technology, which is applied in fluid pressure actuating devices, electromechanical devices, electrical components, etc., can solve the problems of low work efficiency, low oil return pressure, and long measurement period, and achieve simple structure and low oil return pressure. The effect of increasing and shortening the measurement cycle

Inactive Publication Date: 2015-03-04
XIAN SITAN INSTR
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  • Abstract
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Problems solved by technology

The oil return pressure is low, which makes the measurement cycle longer and the work efficiency lower

Method used

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  • Hydraulic driving system for driving electrode telescoping ram

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Embodiment Construction

[0024] In order to overcome the problems of complex structure, poor stability and low work efficiency of the drive system of the existing electrode pusher, the present invention provides a simple structure, strong stability, high reliability and high work efficiency for driving the electrode pusher hydraulic drive unit.

[0025] Such as figure 1 Shown: The hydraulic drive device used to drive the electrode pusher, which is installed in the outer protective tube of the resistivity measuring instrument through the casing. The outer protection tube is filled with oil and communicates with a balance supply oil tank, which is sealed and separated from the outside world. The device includes a transmission component and a pressure transmission component;

[0026] Among them, the transmission assembly 17 includes a motor 1, a coupling 2, and a ball screw 6; the coupling 2 connects the output end of the motor 1 with the input end of the ball screw 6, so that the motor can drive the ba...

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Abstract

The invention, which belongs to the technical field of well logging in petroleum exploration, relates to a hydraulic driving device for driving an electrode telescoping ram. The hydraulic driving device comprises a drive assembly and a pressure transmission assembly; the drive assembly comprises a motor, a coupling and a ballscrew; the coupling connects the output end of the motor with the input end of the ballscrew; the pressure transmission assembly comprises a nut, a connecting barrel, a piston, a check valve and a pump barrel; the nut is mounted on the ballscrew, one end of the connecting barrel fixedly sleeves the nut, and the other end of the connecting barrel is fixedly connected with the piston; the piston is mounted in the pump barrel and divides the pump barrel into a front chamber and a rear chamber; the check valve is mounted in the piston; the rear chamber of the pump barrel communicates with an electrode telescoping ram through a tubing. The hydraulic driving device has a simple structure and high reliability, and moreover, the working efficiency of the hydraulic driving device is greatly increased in comparison with the working efficiency of the prior art.

Description

technical field [0001] The invention belongs to the technical field of well logging in petroleum exploration, and relates to a hydraulic drive device for driving an electrode pusher. Background technique [0002] The hydraulic drive system is an important part of the through-casing resistivity logging tool. The through-casing resistivity logging tool is in the casing, the hydraulic energy provided by the hydraulic drive system, the measuring electrode is pierced into the casing wall through the pusher, and the resistivity of the formation is measured by using different power supply measurement methods. [0003] Existing hydraulic drive devices consist of electromagnetic drivers (or electric motors), plunger pumps (single or multiple plunger pumps), and pressure control valve mechanisms. Pressure control valve mechanisms include two types, mechanical directional valve controls or solenoid control valves. [0004] The application number is: 201120369987.6, the name is: a pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14H02K7/10E21B47/00E21B49/00
CPCF15B15/14E21B47/00E21B49/00F15B2015/206
Inventor 张保兴陈兰
Owner XIAN SITAN INSTR
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