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Modeling method and system for reef-shoal reservoir

A modeling method and reservoir technology, applied in the field of reef-shoal-type reservoir modeling methods and systems, can solve the problem of failure to accurately characterize the internal reservoir heterogeneity characteristics of reef-shoal-type reservoirs, inconsistent with geological laws, Lack of reservoir architecture analysis and distribution rules

Active Publication Date: 2019-02-19
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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Problems solved by technology

[0002] In the field of oil and gas geophysical technology, the existing relatively mature modeling methods are mainly suitable for clastic rock reservoirs and porous carbonate rock reservoirs controlled by sedimentation, and lack of reservoir architecture analysis and Restricted by the distribution law, the internal structure and boundary of the reef-beach reservoir cannot be accurately described, which is quite different from the geological reality, and even does not conform to the geological law; The homogeneity feature cannot meet the accuracy requirements of 3D geological modeling of reef-shoal reservoirs
[0003] The inventors found that the geological modeling method for reef-shoal reservoirs with primary pores and secondary pores formed by both sedimentation and diagenesis as the main storage space is still in the exploratory stage, and there is no such method at home and abroad. Geological modeling methods and technologies that can integrate geological understanding and geophysical information to finely describe the internal heterogeneity and reservoir architecture of reef-shoal reservoirs

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  • Modeling method and system for reef-shoal reservoir
  • Modeling method and system for reef-shoal reservoir
  • Modeling method and system for reef-shoal reservoir

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Embodiment approach 1

[0017] figure 1 A flowchart showing the steps of the method for modeling a reef-shoal type reservoir according to the present invention.

[0018] In this embodiment, the method for modeling reef-flat reservoirs according to the present invention may include: step 101, based on seismic data, identify the development intervals of reef-flat reservoirs in a single well, and determine the development intervals of reef-flat reservoirs ; Step 102, based on the single-well reef-beach type reservoir development interval, obtain the reef-beach type reservoir sedimentary microfacies plane distribution map; Step 103, based on the reef-bund type reservoir development interval and vertical evolution sequence, obtain the reef-beach type reservoir Reef-shoal type reservoir reservoir development model, establish reef-shoal type reservoir configuration database; step 104, based on the reef-shoal type reservoir sedimentary microfacies plane distribution map and seismic inversion data body, combi...

Embodiment approach 2

[0053] According to an embodiment of the present invention, a reef-flat reservoir modeling system is provided, and the system may include: identifying a single-well reef-flat reservoir development layer based on seismic data, and determining the reef-flat reservoir The unit of collectively developed layers; the unit used to obtain the planar distribution map of reef-beach reservoir sedimentary microfacies based on the developed layers of reef-beach type reservoirs in a single well; Based on the evolution sequence, the reservoir development model of reef-beach type reservoirs is obtained, and the units of the reef-beach type reservoir configuration database are established; it is used to combine the sedimentary microfacies plane distribution map and seismic inversion data body of reef-beach type reservoirs, combined with geological analysis Layers and seismic interpretation horizons to obtain the unit of distribution probability volume of reef-beach reservoirs; Probabilistic vo...

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Abstract

A method and system for modeling reef-flat reservoirs are disclosed. This method can include: based on seismic data, identifying the development intervals of reef-shoal type reservoirs in a single well, and determining the development intervals of reef-shoal-type reservoirs; based on the development intervals of reef-shoal-type reservoirs in single wells, obtaining reef-shoal-type reservoirs Plane distribution map of sedimentary microfacies; based on the development intervals and vertical evolution sequences of reef-shoal reservoirs, the development model of reef-shoal reservoirs was obtained, and a reef-shoal reservoir architecture database was established; based on the sedimentation of reef-shoal reservoirs Microfacies plane distribution map and seismic inversion data volume, combined with geological layering and seismic interpretation layers, obtain the distribution probability body of reef-shoal type reservoirs; and based on the reef-shoal-type reservoir architecture database, reef-shoal-type reservoir reservoirs Development model and reef-shoal reservoir distribution probability body, and establish a three-dimensional geological model of reef-shoal reservoir. This invention realizes high-precision modeling of reef-shoal-type reservoirs by strengthening the constraints of geological models and laws.

Description

technical field [0001] The invention relates to the technical field of oil and gas geophysics, and more specifically, to a method and system for modeling reef-shoal reservoirs. Background technique [0002] In the field of oil and gas geophysical technology, the existing relatively mature modeling methods are mainly suitable for clastic rock reservoirs and porous carbonate rock reservoirs controlled by sedimentation. Restricted by distribution laws, the internal structure and boundaries of reef-beach reservoirs have not been finely described, which is quite different from the geological reality, and even does not conform to geological laws; at the same time, it has not been able to accurately characterize The homogeneity feature cannot meet the accuracy requirements of 3D geological modeling of reef-shoal reservoirs. [0003] The inventors found that the geological modeling method for reef-shoal type reservoirs with primary pores and secondary pores formed by both sedimenta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V99/00G06T17/05
CPCG06T17/05G01V1/306G01V2210/624G01V2210/665G01V20/00
Inventor 胡向阳郑文波游瑜春刘国萍冯琼石志良刘建党
Owner CHINA PETROLEUM & CHEM CORP