An optical fiber data transmission device for oil well logging equipment

Abstract

The invention discloses an optical fiber data transmission device for petroleum logging equipment. The system comprises a ground terminal, an underground terminal and a photoelectric hybrid cable, wherein the ground terminal comprises a USB interface, an FPGA data processing and control module, a photoelectric conversion module and a photoelectric hybrid interface which are sequentially connected;the USB interface is interconnected with a ground host and ground storage equipment; the underground terminal comprises a photoelectric hybrid interface, a photoelectric conversion module, an FPGA data processing and control module, a bridging module and a logging equipment data interface which are connected in sequence; wherein the logging equipment data interface is interconnected with loggingequipment, the bridging module is used for realizing data transmission transition, and data transmission failure caused by transmission protocol and transmission rate difference is avoided. The devicecan realize high-speed real-time data transmission between the underground of the petroleum logging instrument and the ground, and is convenient for workers to monitor and control the instrument on the ground in real time.

Description

technical field [0001] The invention relates to the field of petroleum logging, in particular to an optical fiber data transmission device for petroleum logging equipment. Background technique [0002] Petroleum logging technology refers to the use of logging equipment to obtain formation medium information, and a large amount of sensing data collected by the logging equipment is transmitted to the ground for analysis through cables or optical fibers, so as to obtain the geological section of the drilling, and use this to judge the drilling performance. quality. At present, there are three methods of oil well logging: wireline logging mode, offline mode and the combination of the two logging modes. [0003] The cable logging mode refers to transmitting the sensing data of the logging equipment directly to the ground through the cable. Currently, the commonly used data transmission protocol between the underground and the ground is the CAN bus, and the transmission rate of t...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an optical fiber data transmission device for petroleum logging equipment, which mainly uses optical fiber as the transmission medium to solve the insufficient link bandwidth of petroleum logging equipment when uploading large-capacity data downhole As well as the problem that the limited storage capacity of the logging equipment affects the working time of the instrument during offline measurement, and a set of optical fiber data transmission device is designed to realize the high-speed interconnection between the downhole logging equipment and the surface data processing equipment, so that the logging staff can monitor the logging in real time Equipment status and timely processing of instrument data to obtain formation medium information

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