Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method

A technology of downhole instrument and bus system, which is applied in wellbore/well components, measurement, earth-moving drilling and production, etc., can solve the problems of small equipment flow, limit the data transmission of downhole instruments, and post-analysis obstacles of logging data, etc., and achieve convenient production. Fast, improve bus speed and reliability, and easy to maintain

Inactive Publication Date: 2012-12-26
CNPC GREATWALL DRILLING ENG
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  • Summary
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  • Application Information

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Problems solved by technology

The flow rate of these devices is small, which limits the data transmission of many downhole tools, resulting in a large

Method used

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  • Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method
  • Bus system of logging downhole instrument based on twisted-pair Ethernet and logging method

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Embodiment Construction

[0023] The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

[0024] First, refer to figure 1 , an exemplary twisted-pair Ethernet-based logging downhole tool bus system 100 according to an embodiment of the present invention will be described. The well logging downhole instrument bus system 100 includes: downhole instrument 1 1 ,1 2 …1 n ; downhole remote transmission 2; and the downhole instrument 1 1 ,1 2 …1 n The twisted-pair Ethernet 3 used as a downhole bus is communicatively connected with the downhole remote transmission 2 . Downhole Instruments 1 1 ,1 2 …1 n Can include communication board 4 1 ,4 2 …4 n , for data transmission with the downhole bus. In a preferred embodiment, the communication board 4 1 ,4 2 …4 n can be uniform. The downhole remote transmission 2 may include a communication board 5 as a gateway and a routing module for communicating with the downhole instrument 1 1...

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PUM

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Abstract

The invention relates to a bus system of a logging downhole instrument based on a twisted-pair Ethernet, as well as a logging method, and discloses a bus system of a logging downhole instrument based on a twisted-pair Ethernet. The bus system comprises a downhole instrument which comprises a communication board; a downhole remote transmitter which comprises a communication board that is used as a gateway and a route module; a twisted-pair Ethernet is used as a downhole bus for connecting the downhole instrument and the downhole remote transmitter by communicating means, thereby forming a local area network; the bus system of a logging downhole tool based on the twisted-pair Ethernet is characterized in that the communication board is abutted with the downhole bus and the communication board further comprises an embedded processor, a digital signal processor, an Ethernet controlling chip, an Ethernet exchanging chip and an isolation transformer. Furthermore, the invention relates to a logging method adopting the bus system of the logging downhole instrument.

Description

technical field [0001] The present invention relates to a well logging downhole instrument bus system and a well logging method in a petroleum logging system, more particularly to a well logging downhole instrument bus system and a well logging method based on twisted pair Ethernet, which are used to complete the ground system and The communication function between downhole instruments and between downhole instruments. Background technique [0002] Well logging, also known as geophysical logging or petroleum logging, is a method of measuring geophysical parameters using the electrochemical properties, electrical conductivity, acoustic properties, radioactivity and other geophysical properties of rock formations. It belongs to applied geophysical methods (including gravity, Magnetic, electrical, seismic, logging). Generally, it can be divided into electrical logging, sonic logging, radioactive logging, formation dip logging, gas logging, formation testing logging, gas drilli...

Claims

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Application Information

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IPC IPC(8): E21B47/12
Inventor 陈文轩陈文岳宏图戴光明孙云涛裴彬彬
Owner CNPC GREATWALL DRILLING ENG
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