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Sandstone thickness contour map compilation method with reservoir configuration constraint

A technology of contour map and sand body thickness, applied in the direction of seismic signal processing, etc., can solve problems such as difficult reservoir quality evaluation, and achieve the effect of guiding fine reservoir quality evaluation

Active Publication Date: 2019-11-26
CNOOC TIANJIN BRANCH +1
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Problems solved by technology

Therefore, the current sandstone thickness contour map is difficult to effectively guide the fine reservoir quality evaluation

Method used

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  • Sandstone thickness contour map compilation method with reservoir configuration constraint
  • Sandstone thickness contour map compilation method with reservoir configuration constraint
  • Sandstone thickness contour map compilation method with reservoir configuration constraint

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Embodiment Construction

[0035] 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.

[0036] The A sand body of the Q oil field in the eastern part of China is taken as an example for further explanation below. The A sand body of the Q oil field is a meandering river deposit.

[0037] like figure 1 As shown, a method for compiling a sandstone thickness contour map constrained by reservoir architecture proposed in this embodiment includes the following steps:

[0038] Step 1: Reservoir architecture unit division:

[0039] 1) Prediction of reservoir architecture interface: Using the pure wave seismic data of Q Oilfield, the cur...

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Abstract

The invention relates to a sandstone thickness contour map compilation method with the reservoir configuration constraint. The method comprises the following steps: step one, dividing reservoir configuration units; to be specific, step a, predicting reservoir configuration interfaces; step b, classifying the reservoir configuration interfaces; and step c, combing the reservoir configuration interfaces; step two, compiling sandstone thickness contour maps in the reservoir configuration units; to be specific, step a, preparing data; and step b, carrying out sandstone thickness interpolation of seismic attribute constraint well points; and step three, generating a sandstone thickness contour map; to be specific, step b, analyzing development periods of adjacent configuration units; and step b, superposing the sand body thickness contour maps. According to the invention, with the configuration units as mapping units, the information such as the structural relation in the underground reservoir is introduced, so that the real distribution condition of the sandstone thickness can be effectively reflected; the limitation that the traditional sandstone thickness contour map can only reflectthe thicknesses between envelope surfaces of the sandstone reservoir is broken; and thus the fine reservoir quality evaluation can be effectively guided.

Description

technical field [0001] The invention relates to the technical field of clastic rock reservoir development, in particular to a method for compiling a sandstone thickness contour map constrained by reservoir configuration. Background technique [0002] Fluvial and deltaic reservoirs are important types of oil and gas reservoirs, and their oil geological reserves account for 79% of the total proven and developed clastic rock geological reserves in my country. During the depositional evolution of this type of reservoir, sand bodies of different stages and different microfacies are eroded and superimposed in space, resulting in complex and changeable structural relationships inside the reservoir, hindering the migration of oil, gas and water. With the increasing degree of oilfield development year by year, geologists gradually realize that reservoir architecture is an important content of development geological research. [0003] In recent years, the study of reservoir architect...

Claims

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/30
Inventor 王海峰胡光义范廷恩于斌栾东肖范洪军高玉飞张晶玉刘向南宋来明
Owner CNOOC TIANJIN BRANCH
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