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Fault seismic interpretation method

A seismic interpretation and fault technology, applied in the field of petroleum exploration, can solve the problem of low precision of seismic interpretation, and achieve the effect of complete and reliable logging data, stable mineral composition and high precision

Active Publication Date: 2019-04-02
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a fault seismic interpretation method to solve the technical problem in the prior art that the seismic interpretation accuracy of the target fault is not high

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Embodiment Construction

[0042] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0043] The embodiment of the fault seismic interpretation method for improving the fault seismic interpretation accuracy of the present invention will be described below by taking the target fault in the Machang area of ​​Dongpu Sag as an example.

[0044] Such as Figure 1-10 As shown, the fault seismic interpretation method of the present embodiment includes the following steps:

[0045] Determination of Time-Depth Transformation Relationship Between Formation Drilled in Well 1 and Wellside Seismic Profile

[0046] Using the acoustic time difference data of the selected single well Ma 11-73 near the target fault in the target area to make well synthetic records, establish the corresponding relationship between the formation encountered in the selected single well Ma 11-73 and the seismic phase of the side channel, and then determine The time-depth co...

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Abstract

The invention relates to a fault seismic interpretation method, and belongs to the technical field of the oil exploration. The fault seismic interpretation method comprises the following steps: firstly determining a time-depth conversion relation of well drilling strata and a well bypass seismic section, and then establishing the time-depth conversion relations of all wells in a target work area;firstly interpreting a seismic main section and a contact section by utilizing the established time-depth relation conversion of all wells and the seismic in the work area; initially determining a trajectory location of the target fault on the main section and the contact section, and then determining fault trajectories on an uplifted side seismic section and a downthrown side seismic section, andmodifying and interpreting the target fault trajectories on the seismic main section and the contact section by utilizing the determined target fault trajectories on the uplifted side seismic sectionand the downthrown side seismic section parallel to the target fault. Through the seismic interpretation method of the fault disclosed by the invention, the seismic interpretation precision is greatly improved, and the method has significance for the refined development of the oilfield maturing field.

Description

technical field [0001] The invention relates to a fault seismic interpretation method, which belongs to the technical field of petroleum exploration. Background technique [0002] With the continuous development of domestic oil fields, the exploration and development of most oil fields have entered the middle and late stages, and the fine and efficient development of oil fields is imperative. Finely interpreting target faults, precisely locating the spatial extension of target faults, and accurately grasping the distribution of unproduced remaining oil in reservoirs are of great significance to the fine development of mature oilfields. [0003] In the current oilfield production activities, seismic structure interpretation mainly relies on the two-dimensional closed interpretation technology of interpreting the main section and connecting section; The same fault or strata interpreted in the direction of the vertical connection profile must completely coincide at their inter...

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 张天增马艳艳张新樵李春爱任宏朵爽苏爱芹李迎胜
Owner CHINA PETROLEUM & CHEM CORP
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