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Downhole information cabled transmission method, device and system

A transmission device and wireless transmission technology, which is applied in the field of oil drilling, can solve the problems of low transmission rate, high speed, large connection loss, etc., and achieve the effect of large transmission data capacity, high transmission rate and reliable transmission data

Active Publication Date: 2014-04-09
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The rotating device at the end of the cabled drill string is directly connected to the server of the ground processing system. When the rotating device is working, the cabled drill string rotates at a high speed and the torque is large, resulting in large connection loss and unstable signal transmission, resulting in downhole information being transmitted through the rotating device to the The ground processing system server has a low transmission rate and a small transmission data capacity

Method used

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  • Downhole information cabled transmission method, device and system
  • Downhole information cabled transmission method, device and system
  • Downhole information cabled transmission method, device and system

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Embodiment 1

[0043] The embodiment of the present invention provides a cable transmission method for downhole information, see figure 1 , the method flow includes:

[0044] 101: collect real-time measured downhole information, and transmit it from downhole to the surface rotating device through a cable channel;

[0045] 102: Extract the downhole information from the cable channel by wireless transmission, and send the downhole information to the ground server by wireless transmission over the ground rotating device.

[0046] The embodiment of the present invention extracts downhole information wirelessly from the cable channel, and transmits the downhole information to the server on the ground over the surface rotating device, and the transmission rate is high, the transmission data capacity is large, and the transmission data is reliable.

Embodiment 2

[0048] The embodiment of the present invention provides a cable transmission method for downhole information, see figure 2 , the method flow includes:

[0049] 201: Collect real-time measured logging-while-drilling data information, downhole geosteering information and downhole rotary steering information;

[0050] Specifically, the measurement tools include logging while drilling sub-joints, geosteering and rotary steering, and the downhole information measured in real time includes: logging while drilling data information, downhole geosteering information and downhole rotary steering information.

[0051] 202: Transmitting downhole information including logging-while-drilling data information, geosteering information and rotary steering information to the ground via a cable channel;

[0052] After the downhole information is collected, the downhole information, including geosteering information and rotary steering information, is transmitted to the ground through the cable...

Embodiment 3

[0060] see Figure 4 , the embodiment of the present invention provides a downhole information cable transmission device, the device includes:

[0061] The information collection unit 401 is used to collect real-time measured downhole information and transmit it from downhole to the surface rotating device via a cable channel;

[0062] A wireless transmission unit 402, configured to extract the downhole information from the cable channel in a wireless manner, and send the downhole information to a ground server in a wireless transmission manner over the ground rotating device

[0063] The above-mentioned information collection unit 401 is used to collect logging-while-drilling data information, downhole geosteering information and downhole rotary steering information in real time. Downhole measurement includes but not limited to LWD pup joints, geosteering and rotary steering, etc., which can be used for all current MWD technologies.

[0064] The above-mentioned cabled chann...

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Abstract

The invention discloses a downhole information cabled transmission method, device and system and belongs to the technical field petroleum drilling. The method includes: collecting downhole information measured in real time, and transmitting the downhole information to a rotating device on the ground through a cabled channel; using a wireless transmission manner to extract the downhole information from the cabled channel, and using a wireless transmission manner to go over the rotating device on the ground and transmit the downhole information to a ground server. The method has the advantages that the downhole information is extracted from the cabled channel with the wireless manner and transmitted to the ground server without passing the rotating device on the ground, and the method is high in transmission rate, large in data transmission capacity and reliable in data transmission.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a cable transmission method, device and system for downhole information. Background technique [0002] With the continuous development of logging-while-drilling technology and the continuous enrichment of logging-while-drilling methods, the diversified logging-while-drilling methods provide rich downhole information for drilling staff to make real-time decisions. These downhole information needs to be transmitted to the surface. Provided to the drilling staff, the drilling staff will analyze and judge the geological and engineering conditions of the formation being drilled based on the rich downhole information, so as to adjust the drilling direction in time to control the most favorable wellbore trajectory and achieve the expected drilling purpose. [0003] The existing downhole information transmission methods include mud pulse transmission, electromagnetic wave tran...

Claims

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Application Information

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IPC IPC(8): E21B47/12
Inventor 刘岩生余金海黄衍福孙成芹石倩张春华高建平王晨刘相翌潘兴明李禾香王海森祝丽娜周金昭见立银周智勇李皖东
Owner BC P INC CHINA NAT PETROLEUM CORP
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