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Transverse wave seismic profile obtaining method and device

A technology of seismic profile and acquisition method, which is applied in the field of oil and gas exploration and can solve problems such as non-closure

Pending Publication Date: 2021-03-12
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0004] An embodiment of the present invention provides a method for obtaining a shear wave seismic profile to solve the problem that the SH wave or SV wave is not closed at the intersection of the main survey line and the tie line in the two-dimensional work area. The method includes:

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  • Transverse wave seismic profile obtaining method and device
  • Transverse wave seismic profile obtaining method and device
  • Transverse wave seismic profile obtaining method and device

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0036] In order to solve the problem that the orthogonal shear wave survey line is not closed, the embodiment of the present invention provides a method for obtaining a shear wave seismic section, as shown in the attached figure 1 As shown, the method includes:

[0037] Step 101. Acquire seismic data of a preset two-dimensional work area, where the seismic data includes SH wave data and SV wave data.

[0038] Step 102, laying out the different types of seismic data on the main survey line and the tie line in the preset two-dimensional work area survey line respectiv...

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Abstract

The invention discloses a transverse wave seismic profile obtaining method and device, and the method comprises the steps: obtaining seismic data of a preset two-dimensional work area, and the seismicdata comprises SH wave data and SV wave data; respectively arranging different types of seismic data on a main survey line and a tie line of a preset two-dimensional work area survey line; and carrying out data processing on the seismic data to obtain a transverse wave superposition profile. According to the invention, the transverse wave vibration directions of the main measuring line and the tie line at the intersection point can be ensured to be the same, the main measuring line and the tie line are ensured to be closed, and subsequent seismic data interpretation work can be carried out smoothly.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a method and device for acquiring a shear wave seismic profile. Background technique [0002] In oil and gas exploration operations, since the propagation velocity of the shear wave is only affected by the rock skeleton, the fluid in the formation does not affect the propagation velocity of the shear wave, especially when the fluid in the formation is gas, the reflection of the shear wave can reflect the underground structure more accurately , to meet the requirements of accurately describing the subsurface structure and interpreting thin interbedded reservoirs. Therefore, in order to accurately identify structural gas reservoirs, it is very important to obtain shear wave seismic sections. [0003] In the prior art, when obtaining a shear-wave seismic profile, two-dimensional shear-wave data is generally collected, and then the data is processed to obtain a shear-...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/301
Inventor 武威威栗美华王红博张建英黄汉卿刘志兵
Owner BC P INC CHINA NAT PETROLEUM CORP
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