Analog simulation test device and method for underground electromagnetic wireless transmission system

A technology of wireless transmission and system simulation, which is applied in the field of oil and gas exploration and testing, and can solve problems such as complex working conditions and difficult operations

Active Publication Date: 2021-07-06
CNOOC TIANJIN BRANCH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, with the continuous expansion of the scope of offshore oil and gas testing and the improvement of timeliness r

Method used

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  • Analog simulation test device and method for underground electromagnetic wireless transmission system
  • Analog simulation test device and method for underground electromagnetic wireless transmission system
  • Analog simulation test device and method for underground electromagnetic wireless transmission system

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0041] The invention provides a simulation test device for downhole electromagnetic wireless transmission system, which mainly consists of casing, drill pipe, packer, steel pipe cable, casing resistivity simulation sub, drill pipe resistivity simulation sub and wireless electromagnetic transmission System Components. In this system, simulation tests related to different casing environments, different drill pipe environments, and different well fluid environments can be realized; and the operating status and data of the system can be monitored by passing through the casing with steel pipes and cables.

[0042] like figure 1 As shown, in the simulation test device for the downhole electromagnetic wireless transmission system, the electronic nipple of the system is installed on...

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Abstract

The invention discloses an analog simulation test device for an underground electromagnetic wireless transmission system. The analog simulation test device comprises a first drill rod; a wireless transmitting device mounted on the first drill rod; a first sleeve arranged on the first drill rod in a sleeving mode in the axial direction, wherein one end of the first drill rod extends to the outer side of one end of the first sleeve; a second drill rod, wherein the sescond drill rod and the first drill rod are arranged at an interval; a wireless receiving device mounted on the second drill rod; a second sleeve arranged on the second drill rod in a sleeving mode in the axial direction, wherein one end of the second drill rod extends to the outer side of one end of the second sleeve; a cabled telemetry device mounted on the second drill rod; a computer connected with the cable telemetry device through a cable; a drill rod resistivity simulation pup joint, wherein one end of the drill rod resistivity simulation pup joint is connected with the first drill rod, and the other end is connected with the second drill rod; a sleeve resistivity simulation pup joint, wherein one end of the sleeve resistivity simulation pup joint is connected with the first sleeve, and the other end is connected with the second sleeve; and multiple grounding wires, wherein one ends of the grounding wires are connected with different positions of the sleeve resistivity simulation pup joint respectively, and the other ends of the grounding wires are grounded.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas exploration and testing, and in particular relates to a simulation testing device and method for an electromagnetic wireless transmission system in a downhole. Background technique [0002] At present, with the continuous expansion of the scope of offshore oil and gas testing and the improvement of timeliness requirements, the working conditions are becoming more and more complicated, and the operation is becoming more and more difficult. Therefore, the data transmission system based on electromagnetic wireless technology is an inevitable trend in the development of formation testing. Therefore, how to simulate and test the system and establish the actual well condition environment and related testing methods to the greatest extent is the key to improving the research and operation of electromagnetic wireless transmission system. The inevitable requirement for the success rate of...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B17/391H04W24/06
CPCH04B17/3912H04B17/0087H04W24/06
Inventor 孟文波黄熠刘书杰颜帮川魏剑飞任冠龙王乐张崇董钊蒋东雷苏剑波徐斐
Owner CNOOC TIANJIN BRANCH
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