Method and device for identifying reservoir sequence
An identification method and reservoir technology, applied in seismic signal processing and other directions, can solve the problems of inaccurate division results and unclear interval characteristics, and achieve the effects of macroscopic water body advance and retreat trends, intuitive sequence changes, and easy sequence comparison.
Active Publication Date: 2018-07-06
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
However, the Liu-2 sub-member and the Liu-3 sub-member are two relatively thick strata. How does the sand-to-ground ratio change inside the strata? How does the sand-to-ground ratio transition from the Liu-3 sub-member to the Liu-2 sub-member? None of these questions yields precise results
[0006] Therefore, the inventors found that the existing sequence identification method realized by analyzing the response characteristics of lithology data, logging curves and seismic profiles, because the characteristics of intervals during production are not obvious, the division results are often not accurate enough
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[0058] Embodiments of the present application provide a reservoir sequence identification method and device.
[0059] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0060] image 3 It is a flow chart of an embodiment of the method for identifying reservoir sequence in this application. refer to image 3 , the method may include the following steps.
[0061] S101: Obtain lithology informa...
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The embodiment of the application discloses a method and device for identifying a reservoir sequence. The method comprises: lithology information is obtained; digital processing is carried out on thelithology information; according to the lithology information after digital processing, a unit sandstone total thickness curve is determined; and first processing is carried out on the unit sandstonetotal thickness curve and sequence identification is carried out based on a first processing result. With the method and device for identifying a reservoir sequence, the accuracy of sequence identification is improved.
Description
technical field [0001] The present application relates to the technical field of comprehensive seismic interpretation, in particular to a reservoir sequence identification method and device. Background technique [0002] The sequence is a relatively integrated and internally connected stratigraphic sequence bounded by the unconformity surface and the unconformity surface corresponding to the unconformity surface. A sequence can be a first-order sequence, a second-order sequence, and a third-order sequence. Parasequences and parasequence groups (also known as fourth-order sequences and fifth-order sequences) are the stratigraphic constituent units of sequences. A parasequence is composed of a lake (sea) flooding surface or its corresponding interface as a boundary, relatively integrated, and internally connected rock formations or rock formation sequences. The lake (sea) flooding surface is an interface that separates the old and new strata, and the upper and lower water de...
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IPC IPC(8): G01V1/30
Inventor 徐国庆杨安元张志强李廷辉李洪革孙健
Owner BC P INC CHINA NAT PETROLEUM CORP