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A Method for Constructing Sandstone Thickness Contour Map Constrained by Reservoir Architecture

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: 2021-06-15
CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD +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

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  • A Method for Constructing Sandstone Thickness Contour Map Constrained by Reservoir Architecture
  • A Method for Constructing Sandstone Thickness Contour Map Constrained by Reservoir Architecture
  • A Method for Constructing Sandstone Thickness Contour Map Constrained by Reservoir Architecture

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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] Such as 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 ...

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Abstract

The invention relates to a method for compiling a sandstone thickness contour map constrained by reservoir configuration, comprising the following steps: Step 1: division of reservoir configuration units, including: 1) Prediction of reservoir configuration interface; 2) Reservoir configuration Type interface classification; 3) Reservoir configuration interface combination; Step 2: Compile the sandstone thickness contour map in the reservoir configuration unit, including: 1) Data preparation; 2) Sandstone thickness interpolation of seismic attribute constrained well points; Step 3: Sandstone thickness contour map generation, including: 1) analysis of the development stages of adjacent architectural units; 2) sand body thickness contour map superimposition. The invention takes the configuration unit as the mapping unit, introduces information such as the structural relationship inside the underground reservoir, can effectively reflect the real distribution of the sandstone thickness, and breaks through the traditional sandstone thickness contour map that can only reflect the sandstone reservoir package. The limitation of the thickness between the network surfaces can effectively guide the fine reservoir quality evaluation.

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...

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Application Information

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Patent Type & Authority Patents(China)
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 CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD
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