Seismic prospecting method between azimuth borehole

An inter-well seismic and azimuth technology, which is applied in the fields of seismology, seismic signal receivers, and earth-moving drilling and mining for logging records, can solve the problems of restricting the detection distance and the complexity of receiving signals, and achieves a solution that eliminates multiple solutions. Effect

Inactive Publication Date: 2007-09-26
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

The sound waves propagating in all directions in the interwell formation may become multiple reflected waves, refracted waves or scattered waves and then be received by the receiving probe, making the received signal very complicated
[0003] The use of point sound sources makes the data processing and inversion of cross-well seismic exploration complex and multi-solution, and also restricts its detection distance.

Method used

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  • Seismic prospecting method between azimuth borehole
  • Seismic prospecting method between azimuth borehole
  • Seismic prospecting method between azimuth borehole

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Embodiment Construction

[0036] As shown in Figures 2 to 5, the present invention provides a method for azimuth interwell seismic exploration, which can be applied to both azimuth interwell seismic exploration in open-hole wells and azimuth interwell seismic exploration in cased wells. The sound system for measurement includes a transmitting probe 1 and at least one receiving probe 2, as shown in Figure 3, the transmitting probe 1 uses the phased combination circular arc array sound wave described in the invention patent No. ZL 20031011 5236.1 Radiator, the receiving probe 2 is a monopole acoustic wave receiving transducer, the transmitting probe 1 is arranged in the launching well 11, and at least one receiving probe 2 is arranged in several adjacent receiving wells 21; as shown in Figure 2 , the method includes the following steps:

[0037] A. The transmitting probe 1 is arranged in the launching well 11, and at least one receiving probe 2 is arranged in the receiving well 21;

[0038] B. Change th...

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Abstract

This invention relates to one well direction earthquake explore method, which comprises the following steps: a, distributing the combination arc sound wave radiators onto emission wells to set at least one receive probe into the receive well; b, changing the work phase control combination arc radiator element combination and exerting the proper excitation to realize down well side wave; c, sending the sound wave by one less threshold angle into certain side wall medium; d, changing incidence angle size and processing scan on earth layer to realize the well layer scan and whole angle measurement; e, each receive probes receive the above sound signals only composed of emission well and common information; f, processing the receive signals of different source distance to realize the sound evalution in the well plane.

Description

technical field [0001] The invention belongs to the field of applied geophysics, and relates to an azimuth interwell seismic exploration method Background technique [0002] Interwell seismic exploration technology refers to arranging a sound source in the transmitting well and arranging several receiving transducers in the adjacent receiving well. Move up and down to realize the measurement and evaluation of the formation between wells. Crosswell seismic exploration technology is a formation evaluation technology with high measurement resolution, especially in the detection of reservoir dynamics in the middle and late stages of oilfield development. In the current cross-well seismic exploration technology, as shown in Fig. 1, the sound source in the launch shaft adopts a sound source whose radiation directivity is similar to that of a point sound source, and it radiates sound waves uniformly to all directions in the formation, of which only one A small part of the acousti...

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Application Information

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IPC IPC(8): G01V1/42G01V1/40G01V1/18G01V1/20E21B47/00E21B47/14
Inventor 鞠晓东乔文孝车小花
Owner BC P INC CHINA NAT PETROLEUM CORP
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