Stratum slice priority selection method

A technology for formation slices and marker layers, applied in the field of seismic sedimentology, can solve the problems of slow optimization of formation slices, influence of the technical level of optimal results, and influence on the work efficiency of well-seismic combined with fine description of reservoirs, etc., so as to improve work efficiency and ensure The effect of accuracy

Inactive Publication Date: 2018-02-09
PETROCHINA CO LTD +1
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Problems solved by technology

[0005] The above methods are all based on a large number of stratum slices, and adopt the method of manual browsing to select the stratum slices corresponding to the reservoir. This method has the problems that the stratum slice selec

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] An embodiment of the present invention provides a method for optimizing stratum slices, the method comprising:

[0039] Step 1: according to the seismic geological horizon calibration, determine more than one seismic marker layer corresponding to the sequence near the target layer, and determine the seismic reflection time range of the seismic sedimentology stratum slice of the target layer according to the seismic marker layer, Obtaining a plurality of stratum slices according to an equal-scale subdivision method within the seismic reflection time range;

[0040] Step 2: According to the data of all wells within the research area in the target layer, obtain the ratio of the thickness of all wells from the top of the target laye...

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Abstract

The invention discloses a stratum slice priority selection method and belongs to the seismic sedimentology field. The method comprises the following steps of according to an equal proportion subdivision method, acquiring a plurality of stratum slices; acquiring a specific value of a thickness from a top of a target layer to a bottom of a layer to be researched of all wells and a total thickness ofthe target layer, and according to the specific value and a subdivision number in the equal proportion subdivision method, acquiring a range where the stratum slices corresponding to the layer to beresearched are located; acquiring amplitude data of all the wells of the stratum slices, acquiring a reservoir parameter of the layer to be researched, and calculating a correlation coefficient between the amplitude data of the stratum slices and the reservoir parameter; and acquiring the preferred stratum slice of the layer to be researched. In the invention, correlation degree calculating and analysis are performed on the amplitude information of the stratum slices and real reservoir information of the layer to be researched so as to rapidly and accurately select the stratum slices with a highest anastomosis degree.

Description

technical field [0001] The invention relates to the field of seismic sedimentology, in particular to a stratum slice optimization method. Background technique [0002] Seismic sedimentology refers to the determination of sedimentary system types, reservoir distribution, etc. through stratigraphic slice technology and seismic attribute analysis. Stratigraphic slice technology refers to finding geologically isochronous or parallel isochrone events on seismic sections. It is considered that such slices are also isochronous, that is, stratigraphic slices, and that the seismic response of any geological time interface in the stratigraphic time model can be found in a certain stratum slice, but due to Multiple stratum slices can represent the properties, parameters, etc. of this stratum, so it is necessary to select the stratum slice that can best reflect the properties, parameters, etc. of the stratum among the multiple stratum slices. [0003] In the prior art, according to the...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/307G01V2210/6161G01V2210/6169G01V2210/63G01V2210/643
Inventor 李操卢勉姜岩杨春生赵明珠杨莹彬
Owner PETROCHINA CO LTD
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