Composite Electromagnetic Wave Transmission Measuring While Drilling Device
A measurement-while-drilling and measurement device technology, applied in construction and other directions, can solve the problems affecting the popularization and application of electromagnetic wave instruments, limiting signal transmission distance, electromagnetic wave transmission distance limitation, etc., and achieves the effect of reasonable structure, fast transmission speed, and increased measurement depth.
Active Publication Date: 2016-01-13
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
[0002]In oil drilling directional well construction, electromagnetic wave measurement-while-drilling instruments are often used for directional operations. The weakness of the medium, however, because the transmission of electromagnetic wave signals is greatly affected by the resistance of the bottom layer, the transmission distance of electromagnetic waves is limited, and the measuring unit (gamma short joint and probe tube) of the electromagnetic wave instrument currently used is connected with the transmitting unit Yes, the signal is uploaded from the measurement depth, which limits the transmission distance of the signal, thus affecting the promotion and application of electromagnetic wave instruments
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[0018] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.
[0019] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the specification.
[0020] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
[0021] as attached figure 1 As shown, the composite electromagnetic wave transmission measurement-while-drilling device includes a signal relay transmitting device, a lower instrument measuring device and a cable 1; A transmitting cable head is installed, and a transmitting centraliz...
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The invention relates to a signal transmission and measurement device for directional wells in oil drilling, which is a composite electromagnetic wave transmission and measurement device while drilling, which includes a signal relay transmitting device, a lower instrument measuring device and cables; The cross rotating short joint, the upper end of the cross rotating short joint is fixedly equipped with a launching cable head, and a launching centralizer is fixedly installed on the signal relay transmitting device. The present invention has a reasonable and compact structure, and is easy to use. The cross rotating sub-joint and the rotating sub-joint can prevent the cable of the present invention from being twisted during use. At the same time, the present invention can effectively overcome the problem of limited transmission distance of electromagnetic wave signals in the bottom layer and increase the frequency of electromagnetic waves. The measurement depth of the instrument, and the large amount of data transmitted by the cable transmission signal, the transmission speed is fast, will not affect the measurement efficiency, and in the process of signal transmission, the twisting of the cable can be effectively avoided.
Description
technical field [0001] The invention relates to an oil drilling directional well signal transmission measuring device, which is a composite electromagnetic wave transmission measuring device while drilling. Background technique [0002] In oil drilling directional well construction, electromagnetic wave measurement while drilling is often used for directional operations. This instrument transmits signals through electromagnetic waves, which overcomes the weakness that mud pulse transmission signals require liquid media. However, the transmission of electromagnetic wave signals is limited by the resistance of the bottom layer. The impact is relatively large, which limits the transmission distance of electromagnetic waves. However, the measuring unit (gamma subsection and probe tube) of the electromagnetic wave instrument currently used is connected with the transmitting unit, and the signal is uploaded from the measurement depth, which limits the transmission distance of the s...
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IPC IPC(8): E21B47/13
Inventor 邹和均李俊胜王建毅葛娜张仪
Owner BC P INC CHINA NAT PETROLEUM CORP
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