Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof

A logging data, IP protocol technology, applied in transmission systems, signal transmission systems, non-electrical signal transmission systems, etc., can solve the problem of limiting data transmission rate, affecting logging speed, and restricting the development of big data information acquisition technology for downhole instruments, etc. problems, to achieve the effect of improving safety and stability, reducing operation risks, and reducing well occupancy time

Inactive Publication Date: 2020-11-03
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

As an information transmission medium, cables limit the data transmission rate between the downhole and the surface, which has lo...

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  • Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof
  • Optical fiber logging data transmission system based on TCP/IP protocol and working method thereof

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0024] figure 1 The optical fiber logging data transmission system based on TCP / IP protocol of the present invention is mainly composed of three parts: ground system, transmission medium and downhole high temperature resistant electro-optical conversion module:

[0025] The ground system includes a control and acquisition module 1 , a power module 2 , an auxiliary signal measurement module 3 , and a photoelectric conversion module 4 . The control and acquisition module 1 is based on the TCP / IP protocol, and the power module 2, the auxiliary signal measurement module 3, and the photoelectric conversion module 4 realize data acquisition and command delivery. Since the system adopts a network architecture design, the time interval of each frame of data transmissio...

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Abstract

The invention discloses an optical fiber logging data transmission system based on a TCP/IP protocol and a working method thereof, and belongs to the technical field of petroleum and natural gas exploration and development. The system comprises a control and acquisition module, a power supply module, an auxiliary signal measurement module and a photoelectric conversion module which are arranged ona well, a logging torpedo connector arranged under the well, and a photoelectric slip ring and a photoelectric composite cable which are used for connecting the well part and the underground part. Anopen type informatization network logging platform is constructed by applying high-speed optical cable communication and Ethernet bus technologies, transmission of logging operation optical signals is achieved, the logging data transmission rate is increased to 100 Mbps from 1 Mbps, the technical bottleneck of cable data transmission is thoroughly solved, a technical support is provided for research and development of a new generation of array imaging instruments, and the logging data transmission rate is increased to 100 Mbps from 1 Mbps. The measurement precision, the information amount, the image resolution and the logging speed of the instrument are improved, the well occupation time is reduced, the operation risk is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas exploration and development, and in particular relates to an optical fiber logging data transmission system based on the TCP / IP protocol and a working method thereof. Background technique [0002] At present, the well logging data transmission systems of various companies at home and abroad are based on armored cables. The DC resistance of the cable core is about 25 ohms / km, the distributed capacitance is about 0.1uF / km, and the distributed inductance is about 2uF / km when the signal frequency is MHz, so the signal transmission frequency bandwidth of this logging cable is only about 100Hz -100kHz, the cable transmission rate of domestic and foreign logging companies is less than 2Mbps. With the development of well logging technology, new instruments are developing in the direction of signal digitization and arraying of transmitting and receiving probes, so the amount of logging d...

Claims

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Application Information

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IPC IPC(8): G08C23/06H04L29/06E21B47/135
CPCG08C23/06H04L69/26
Inventor 杨居朋陈涛王炜陈江浩郭庆明李向峰雷晓阳程刚罗翔曹景致李文博李亚敏
Owner BC P INC CHINA NAT PETROLEUM CORP
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