Signal transceiving method for ground equipment and signal transceiving method for downhole equipment

A ground signal and ground equipment technology, which is applied in the field of signal transmission and reception of downhole equipment and signal transmission and reception of ground equipment, can solve problems such as complex instructions or continuous information transmission, and achieve real-time optimization of wellbore trajectory without delaying drilling time , the effect of flexible data frame structure

Active Publication Date: 2019-09-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0010] The working principle of this downlink transmission link is the same as that of starting and stopping the pump and changing the combination of pump speed sequences, except that the carrier of the transmitted information becomes the drill string speed at different speeds, and it can only transmit a limited number of commands. , cannot perform complex instructions or continuous information transmission

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  • Signal transceiving method for ground equipment and signal transceiving method for downhole equipment
  • Signal transceiving method for ground equipment and signal transceiving method for downhole equipment
  • Signal transceiving method for ground equipment and signal transceiving method for downhole equipment

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Embodiment Construction

[0045] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0046] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0047] Directional well and horizontal well drillin...

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Abstract

A ground equipment signal transmit-receive method and an underground equipment signal transmit-receive method are provided; the ground equipment signal transmit-receive method comprises the following steps: a transmit-receive instruction determine step determining whether a ground signal sending instruction exists or not, if yes, executing a ground signal sending step, otherwise executing an underground signal receive step; the ground signal sending step used for coding and modulating a to-be-sent ground signal, amplifying the signal power, converting the amplified electric signal into an electromagnetic signal, and sending the electromagnetic signal to the outer side; an underground signal receive step used for converting the electromagnetic signal received from the outer side into an electric signal, modulating and amplifying the converted electric signal, and demodulating and decoding the electric signal with gain amplification, thus obtaining needed data. Compared with a normal pulse transmission mode, the two way transmission method does not need to start and stop a pump, thus saving drilling time, and preventing maloperations.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a signal sending and receiving method for surface equipment and a signal sending and receiving method for downhole equipment. Background technique [0002] Measurement while drilling is a key technical means in the construction of directional wells and horizontal wells. At present, the commonly used information transmission methods while drilling mainly include drilling fluid pressure pulse coding MWD (or conventional MWD) and electromagnetic signal modulation (EM-MWD), and generally only one-way information transmission is carried out. The measurement data modulation is transmitted from downhole to the surface on the drilling fluid pressure pulse wave or electromagnetic signal, and this process is also called uplink transmission. In order to change the working state of downhole instruments or actuators during drilling, the existing MWD or EM-MWD ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/13
Inventor 高炳堂杨春国陈晓晖牛新明孙明光宋朝晖王立双胡越发孙连环
Owner CHINA PETROLEUM & CHEM CORP
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