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Self-adaption transmission method and system for down-hole information

An adaptive transmission and priority transmission technology, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve the problems of inability to reflect changes in downhole information in a timely manner, unable to transmit, and meaningless

Inactive Publication Date: 2008-10-29
CNPC DRILLING RES INST
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Problems solved by technology

Only by distinguishing the drilling mode to select the transmitted information cannot respond to the changes of downhole information in a timely manner, so it is also impossible to transmit these information changes to the ground in time
In addition, it is not only meaningless to repeatedly transmit parameters that do not change much in value, but it is a waste of time

Method used

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  • Self-adaption transmission method and system for down-hole information
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  • Self-adaption transmission method and system for down-hole information

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Embodiment Construction

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0015] The core content of the present invention is to classify the downhole measurement parameters according to the physical objects they belong to, determine the priority transmission level of each type of parameter according to the working mode of the downhole tool and whether the change of each type of parameter is significant, and determine the priority transmission level of each type of parameter according to the priority transmission of each type of parameter. The content of this information frame can ensure that the parameters with high prio...

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Abstract

The invention provides an underground information self-adapting transmission method and a system. The method includes the following steps: collecting underground measurement data, and generating geometric parameter information, formation characteristic parameter information and project parameter information; setting the transmission priority and the special priority rating of the geometric parameter information, the formation characteristic parameter information and the project parameter information according to the working modes of underground tools; calculating the normal transmission priority rating of various parameter information according to the variable quantity of measuring data of various parameter information; adjusting the normal transmission priority rating based on the transmission priority rating of various parameters; framing-transmitting the geometric parameter information, the formation characteristics parameter information and the project parameter information according to the order of the special priority rating and the normal transmission priority rating. The method can adaptively determine a key parameter at a certain moment to realize the priority transmission of the key information, thereby enabling the underground key information to be transmitted to the ground in time, and indirectly improving the information transmission efficiency.

Description

technical field [0001] The invention relates to the measurement-while-drilling of oil and natural gas drilling operations or the transmission technology of measurement information in the logging-while-drilling well, in particular to a downhole information self-adaptive transmission method and system. Background technique [0002] In oil and gas drilling operations, it is often necessary to transmit the measurement information at the bottom of the well to the surface. Due to the constraints of the existing transmission channels and methods, the information transmission rate is very low, and it is difficult to transmit a large amount of underground data information to the surface in time. The existing transmission information selection technology mainly selects different information according to the directional and rotary drilling modes, so as to realize the priority transmission of key parameters in different drilling modes. For example, in the directional drilling mode, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12E21B49/00
Inventor 王家进盛利民邓乐
Owner CNPC DRILLING RES INST
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