Device and method for while-drilling detection of formation interface through azimuthal resistivity
A technology of formation interface and resistivity, which is applied in earthwork drilling, wellbore/well components, buildings, etc., can solve problems such as difficult to determine distance, difficult direction, unable to meet accurate geological steering and formation evaluation, and reduce interference , strong directionality, simple installation effect
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[0033] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.
[0034] Such as figure 1 Shown, a kind of device that utilizes azimuth resistivity while drilling to detect formation interface, comprises: non-magnetic drill collar 1, it is used as the carrier of whole device, is provided with a compensation resistivity measuring point 11; Circuit unit 2, it is installed in non-magnetic Inside the drill collar 1; several antennas and the antenna tuning unit 4 corresponding to each antenna are respectively arranged on the outer surface of the non-magnetic drill collar 1, and connected to the circuit unit 2. The function of the circuit unit 2 is to control the antenna Transmitting and receiving, analysis and calculation, the function of the antenna tuning unit 4 is to compensate according to the electrical characteristics of each antenna, so that the performance of the antenna me...
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