A Rapid Interpretation Method for Complicated Fault-Block Oilfield Horizons
A technology of horizon interpretation and complex fault block, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as difficulty in meeting development accuracy, and achieve the effect of high work efficiency and interpretation accuracy
Active Publication Date: 2021-02-05
CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +1
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Problems solved by technology
This has high experience requirements for interpreters, and there are uncertainties
Especially for horizon interpretation across faults, it is often difficult to meet the requirements of development accuracy
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[0036] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but only to illustrate the essence of the technical solutions of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.
[0037] Such as figure 1 As shown, the present invention provides a method for quickly interpreting layers in complex fault-block oilfields, which includes the following steps:
[0038] 1) Interpretative processing of seismic data to be interpreted to improve data quality and enhance spatial continuity of seismic reflection events;
[0039] Among them, the interpretive processing inclu...
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The invention discloses a method for quickly interpreting horizons in complex fault-block oilfields, which comprises the following steps: 1) performing interpretive processing on the seismic data to be interpreted; Variance body attribute slice near the layer, project the fault interpretation results on the variance body attribute slice, and preliminarily compile the fault polygon according to the fault plane shape, as the plane base map for horizon interpretation; 3) Select the plane base map obtained in step 2) For large fault blocks with a relatively simple structure reflected, perform horizon interpretation inside the large fault block; 4) perform quality control on the horizon interpretation within the fault block in step 3); 5) perform horizon interpretation between fault blocks ; 6) Repeat steps 3) to 5) to interpret the internal horizon of the next fault block until the internal horizon interpretation of all large fault blocks in the work area is completed, and the horizon interpretation of the entire work area is completed.
Description
technical field [0001] The invention relates to a seismic horizon interpretation method suitable for the adjustment and potential tapping stage in the middle and late stages of oil and gas field development, and in particular to a rapid interpretation method for complex fault block oilfield horizons. Background technique [0002] In complex fault-block oil and gas fields, faults develop in multiple stages, and the fault system is complex. After this type of oilfield enters the middle and late stage of development, the degree of structural confirmation directly determines the adjustment effect of oilfield development, which is the key to the prediction of remaining oil distribution and the design and implementation of adjustment wells. In recent years, with the advancement of 3D seismic data acquisition and processing technology, the full 3D interpretation technology with 3D spatial automatic interpretation as the core has developed rapidly. This technology sets spatial seed...
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IPC IPC(8): G01V1/50
CPCG01V1/50G01V2210/6169G01V2210/624
Inventor 张显文杜昕范廷恩张晶玉高云峰蔡文涛董建华范洪军王海峰马良涛
Owner CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD