Data transmission system and method for transmitting underground measurement-while-drilling data to ground

A data transmission system and downhole measurement technology, which is applied in measurement, earthwork drilling, borehole/well components, etc., can solve problems such as fast attenuation, difficulty in detecting signals, and slow transmission speed, so as to improve data transmission rate and communication reliability sexual effect
CN105089644AActive Publication Date: 2015-11-25CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2015-11-25

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Abstract

The invention discloses a data transmission system and method for transmitting underground measurement-while-drilling data to the ground. The data transmission system comprises a drill stem equipped with a well-logging-measurement-while-drilling tool, and a throwing-while-drilling pup joint accommodating a microstorage, wherein the throwing-while-drilling pup joint comprises a housing, a control circuit and a wireless transmit-receive device; the drill stem is sleeved with the housing, and a clearance space is formed between the drill stem and the housing; and under the action of a microstorage release command sent by the control circuit, the throwing-while-drilling pup joint releases the microstorage loaded with the underground measurement data to the ground. The data transmission system for transmitting the underground measurement-while-drilling data to the ground greatly improves the data transmission rate and the communication reliability; and as only slurry is used as a transmission medium of the microstorage, extra cost is not needed, and the normal drilling process is not influenced.
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Description

technical field

[0001] The invention relates to the field of oil and gas development and exploration, in particular to a data transmission system and method for transmitting downhole measurement data while drilling to the ground. Background technique

[0002] With the rapid growth of offshore drilling and the continuous development of horizontal well technology, the application of logging while drilling technology is becoming more and more extensive. The main difference from conventional wireline logging lies in the real-time data acquisition of logging while drilling. That is, formation data are obtained with little or no drilling fluid invasion, and thus are closer to undisturbed formations. Since the test of the formation data is completed while drilling and transmitted to the surface for on-site analysis and interpretation, it not only saves the drilling cycle, but also can guide the drilling, adjust the drilling trajectory and improve the drilling process. Therefore, h...

Claims

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