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An optimized system and method for transmitting and receiving antennas for electromagnetic remote detection between wells

A technology for transmitting and receiving antennas and long-distance detection, which is applied in the field of geophysical exploration and development. It can solve problems such as insignificant amplitude changes, weak magnetic field signals, and difficult identification of targets, and achieve the goal of widening the optional range, increasing the detection distance, and increasing the input current. Effect

Active Publication Date: 2022-08-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

In traditional cross-well electromagnetic logging, the antenna design mostly uses a single transmitting and receiving coil to be placed in two or more wells for transmitting and receiving respectively. The magnetic field signal received by the detection receiving end is weak, the amplitude change is not obvious, the target is difficult to identify, the detection ability is weak, and the formation information obtained is insufficient, so it is impossible to image the interwell formation

Method used

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  • An optimized system and method for transmitting and receiving antennas for electromagnetic remote detection between wells
  • An optimized system and method for transmitting and receiving antennas for electromagnetic remote detection between wells
  • An optimized system and method for transmitting and receiving antennas for electromagnetic remote detection between wells

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Embodiment 1

[0024] like figure 1 As shown, this embodiment provides an optimized system for transmitting and receiving antennas for electromagnetic remote detection between wells, which includes a transmitting antenna circuit and a receiving antenna circuit; the transmitting antenna circuit includes a transmitting coil L1, and the transmitting coil L1 is selected by a first multiplexing method. The switch S1 is connected in series with the first tunable capacitor array; the receiving antenna circuit includes a receiving coil L2, and the receiving coil L2 is connected in parallel with the second tunable capacitor array through the second multiplexing switch S2.

[0025] The first tunable capacitor array includes capacitors C1, C2, C3, and C4 with different withstand voltages and capacitances, and the second tunable capacitor array includes capacitors C6, C7, C8, and C9 with different withstand voltages and capacitances.

[0026] The transmitting coil L1 is connected in series with an AC si...

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Abstract

The invention relates to the technical field of geophysical exploration and development, in particular to an optimization system and method for transmitting and receiving antennas for electromagnetic remote detection between wells. The system includes a transmitting antenna circuit and a receiving antenna circuit; the transmitting antenna circuit includes a transmitting coil L1, The transmitting coil L1 is connected in series with the first tunable capacitor array through the first multiplexing switch S1; the receiving antenna circuit includes a receiving coil L2, which is connected in parallel with the second tunable capacitor array through the second multiplexing switch S2. The invention can effectively improve the detection distance between wells and improve the long-distance exploration and development capability between wells.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration and development, in particular to an optimization system and method for transmitting and receiving antennas for inter-well electromagnetic remote detection. Background technique [0002] With the exploitation of underground mineral resources, the depth of oil reservoir mineral resources on the surface is also getting deeper and deeper. In traditional inter-well electromagnetic logging, the antenna design mostly uses a single transmitting and receiving coil placed in two or more wells for transmitting and receiving. The magnetic field signal received by the detection receiver is weak, the amplitude change is not obvious, the target object is difficult to identify, the detection ability is weak, and the obtained formation information is insufficient, so the formation between wells cannot be imaged. The realization of electromagnetic remote detection between wells not only needs to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/12H01Q1/36
CPCG01V3/12H01Q1/36
Inventor 赵青程丽娜郭成
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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