Continuous wave slurry pulse generator

A technology of mud pulse and generator, which is applied in the field of oil drilling engineering, can solve the problems of slow signal rate, etc., and achieve the effects of low bit error rate, protection of motor assembly, and simple structure

Inactive Publication Date: 2012-04-25
SCHLUMBERGER JHP OILFIELD TECH SHANDONGCO
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the signal rate of the drilling fluid pressure signal generator is relatively slow. Therefore, it is very necessary to analyze and study the working mechanism and charac

Method used

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  • Continuous wave slurry pulse generator
  • Continuous wave slurry pulse generator
  • Continuous wave slurry pulse generator

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] Such as figure 1 As shown, the continuous wave mud pulse generator is composed of power and transmission device, pressure balance and sealing module and rotary valve, installed in the non-magnetic drill collar, and the spearhead 1 is the clamping part of the fishing tool. The power and transmission device is at the bottom, the pressure balance and sealing module is in the middle, and the rotary valve is at the top; the power and transmission device consists of a motor driver 23, a motor assembly 19, a universal coupling 18, a secondary sealing transmission shaft 17 and the main drive shaft 8, the motor assembly is fixed in the pressure-resistant cylinder 20, the secondary seal transmission shaft 17 is connected to the motor 19 assembly through a universal coupling 28; the pressure balance and sealing module is composed of the pressure-resistant cylinders 9, 14, 15, ...

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Abstract

The invention provides a continuous wave slurry pulse generator. A power and transmission device is arranged at the bottom; a pressure balancing and sealing module is arranged in the middle; a rotary valve is arranged on the top; the power and transmission device is composed of a motor driver, a motor assembly, a universal coupler, a secondary sealing transmission shaft and a main transmission shaft; the motor assembly is fixedly arranged in a pressure-resisting cylinder; the secondary sealing transmission shaft is connected with the motor assembly through the universal coupler; the pressure balancing and sealing module is composed of the pressure-resisting cylinder, a balancing piston and a high-pressure plug; the pressure-resisting cylinder is provided with a pore path through which the slurry flows; the pressure-resisting cylinder is provided with a pore path through which the hydraulic oil flows; and the rotary valve is composed of a stator, a rotor and a sleeve. The continuous wave slurry pulse generator is simple in structure, is reliable in working and is suitable for a wireless system for measuring while drilling. The problems of low speed and high error rate for information transmission are solved.

Description

Technical field [0001] The invention belongs to the field of petroleum drilling engineering, in particular to a mud pulse generator for wireless measurement while drilling. Background technique [0002] During the drilling process, especially in the drilling process of complex structure wells such as horizontal wells, extended-reach wells and lateral wells, various downhole parameters that the well site personnel need to know in real time are completed by the measurement while drilling MWD and logging while drilling LWD systems . The measurement-while-drilling and logging-while-drilling systems are composed of downhole controllers, various downhole parameter measuring instruments, measurement-while-drilling information transmission systems, and surface information receiving, processing, and displaying systems. The information transmission system is one of the key technologies. [0003] For a long time, the development of various subsystems of measurement while drilling and...

Claims

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Application Information

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IPC IPC(8): E21B47/18
Inventor 吴俊杰柏险峰顾鹏
Owner SCHLUMBERGER JHP OILFIELD TECH SHANDONGCO
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