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Longitudinal wave crack forecasting and exfoliating method

A technology for crack prediction and layer stripping, which can be used in measurement devices, earth-moving drilling, geophysical measurement, etc. It can solve the problem of only obtaining single-layer fracture parameters, and achieve the effect of reducing risk costs and improving oil recovery.

Inactive Publication Date: 2012-05-30
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0068] The embodiment of the present invention proposes a longitudinal wave crack prediction and delamination method and a longitudinal wave crack prediction and delamination device to solve the problem in the prior art that only single-layer fracture parameters can be obtained

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  • Longitudinal wave crack forecasting and exfoliating method
  • Longitudinal wave crack forecasting and exfoliating method
  • Longitudinal wave crack forecasting and exfoliating method

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Embodiment Construction

[0107] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0108] Such as figure 1 As shown, it is a flow chart of the longitudinal wave crack prediction and delamination method provided by the present invention, and the method includes:

[0109] Step S101, input seismic data;

[0110] Step S102, performing layer stripping processing on the seismic data;

[0111] Step S103, obtaining the AMR of the single-layer TIH medium;

[0112] Step S104, performing AMR cross-mapping analysis and TIH parameter inversion on the ...

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Abstract

The invention relates to a longitudinal wave crack forecasting and exfoliating method. The method comprises the following steps of: inputting earthquake data; exfoliating the earthquake data; obtaining adaptive multi rate (AMR) of a TIH medium; and performing AMR drawing analysis and TIH parametric inversion on the TIH medium. When the technical scheme provided by the invention is used to forecast the crack direction of a target layer in a multi-layer crack medium, the crack parameters of each layer of medium in the multi-layer crack medium can be effectively acquired.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a new crack prediction technology aimed at the field of petroleum geophysical exploration, specifically a longitudinal wave crack prediction and layer stripping method. Background technique [0002] Fractures are an important space for underground oil and gas storage and migration, so finding fractures is one of the important goals of seismic exploration. At present, there are many techniques to study the azimuth anisotropy of fractures by using the azimuth change information of P-waves, but they basically assume that the overlying layer is isotropic or has the same fracture direction, which is actually impossible. To overcome this limitation, the NMO method for vertically homogeneous anisotropic media has been proposed, but due to problems such as error propagation, the NMO method needs to be handled carefully, and its applicability in practical applications is very ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01V1/28G01V1/36E21B49/00
Inventor 李向阳狄帮让王尚旭
Owner BC P INC CHINA NAT PETROLEUM CORP
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