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Pipe fluid pressure pulse signal generator

A technology of signal generator and pressure pulse, which is applied in measurement, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of high power consumption and poor waveform, and achieve low power consumption, good waveform shape and low working current. less demanding effect

Inactive Publication Date: 2010-11-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of poor waveform and high power consumption of the existing pulse signal generator in the well, thereby providing a pulse signal generator for fluid pressure in the pipeline

Method used

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  • Pipe fluid pressure pulse signal generator
  • Pipe fluid pressure pulse signal generator
  • Pipe fluid pressure pulse signal generator

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0015] Specific implementation mode 1. Combination figure 1 Describe the specific implementation mode, a pulse signal generator for fluid pressure in a pipeline, which includes an outer cylinder 1, an inner cylinder 2, an inner cylinder plug 3, an X-shaped bracket 4, a measurement and control circuit 5, a power supply 6, and an electromagnet movement Mechanism 8, sealing plug 12, connecting rod 13, disc 14, piston 15, expansion ring 18, base 19, sleeve 22 and outer sleeve 23;

[0016] The inner cylinder plug 3 seals the upper end of the inner cylinder 2, and the sealing plug 12 seals the lower end of the inner cylinder 2. The inner cylinder plug 3, the inner cylinder 2 and the sealing plug 12 form a sealed cavity, and the sealed cavity is composed of From top to bottom, it is divided into the first cavity, the second cavity and the third cavity. The measurement and control circuit 5 is set in the first cavity, the power supply 6 is set in the second cavity, and the electromagn...

specific Embodiment approach 2

[0026]Embodiment 2. The difference between this embodiment and the pulse signal generator for fluid pressure in a pipeline described in Embodiment 1 is that the electromagnet movement mechanism 8 consists of an electromagnet moving iron core 81 and an electromagnet static iron core 82. , electromagnet coil 83 and spring 84, described electromagnet moving iron core 81 coaxially passes through electromagnet static iron core 82, and the lower end of electromagnet moving iron core 81 is connected with connecting rod 13 upper ends, and spring 84 is positioned at electromagnet In the static iron core 82, and the spring 84 is sleeved on the electromagnet moving iron core 81, the upper end of the spring 84 is in close contact with the baffle plate on the electromagnet moving iron core 81, and the lower end of the spring 84 is in contact with the sealing plug. The upper end surface is in close contact; the electromagnet coil 83 is embedded in the upper edge of the electromagnet static i...

specific Embodiment approach 3

[0027] Embodiment 3. The difference between this embodiment and the pulse signal generator for fluid pressure in a pipeline described in Embodiment 1 or 2 is that the power signal input terminal of the measurement and control circuit 5 and the power signal output of the power supply 6 The ends are connected by a waterproof cable 7.

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Abstract

The invention discloses a pipe fluid pressure pulse signal generator, which relates to a pressure pulse signal generator. The invention solves the problems of the conventional downhole pulse signal generator, i.e. poor generated wave form and high power consumption. A coaxial internal barrel is mounted in an external barrel of the generator, a control circuit, an electromagnet movement mechanism and a pulse piston are mounted sequentially from the top down in the internal barrel, the pulse piston is used for opening and closing guide holes and an orifice, and an expansion ring is mounted on the lower part of the internal barrel. The pulse piston can be driven by the electromagnet to move up and down, which leads to the expansion and retraction of the expansion ring. The invention is applicable to the generation of pipe fluid pressure pulse signals.

Description

technical field [0001] The invention relates to a pressure pulse signal generator. Background technique [0002] During the drilling process, in order to perceive the information at the drill bit, it is necessary to perform measurements at the drill bit. At present, the best way to transmit measurement data is to use mud pressure waves to transmit downhole signals. There are three types of pressure wave, positive wave, negative wave and continuous wave, and the most used one is positive wave. At present, there are many ways to generate positive waves. The basic principle is to reduce the cross-sectional area of ​​a certain position in the mud channel, and to increase the pressure at the mud inlet end while maintaining a stable mud flow, thereby generating pressure fluctuations. [0003] In the downhole, the mud signal generator is used in the environment of high temperature, high pressure and strong vibration, which requires its strong adaptability, high reliability, good s...

Claims

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Application Information

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IPC IPC(8): E21B47/18
Inventor 刘均袁峰邹彦艳
Owner HARBIN INST OF TECH
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