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Fluvial facies multi-layer and thick-layer oil deposit fine modeling method

A modeling method and sophisticated technology that can be used in earth-moving drilling, wellbore/well components, measurement, etc., and can solve the problems of severe reservoir heterogeneity, scattered distribution of planar sand bodies, and poor connectivity of planar sand bodies.

Active Publication Date: 2015-05-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The establishment of reservoir framework model and attribute model is difficult, mainly because of incomplete known data, insufficient precision of known data, insufficient understanding of reservoirs, and incomplete modeling algorithms. Interlayer well prediction results often contain many uncertainties, which bring certain risks to the study of well location, well trajectory, measures, adjustment scheme design, and remaining oil distribution law.
The stochastic simulation algorithm can be used to characterize the uncertainty of inter-well prediction of reservoirs, which has important reference value for optimizing various scheme designs and reducing risks. Severe heterogeneity, scattered distributi

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  • Fluvial facies multi-layer and thick-layer oil deposit fine modeling method

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[0042] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0043] Such as figure 1 Shown is a flow chart of a specific embodiment of the fluvial facies multi-layer and thick-bed reservoir fine modeling method of the present invention.

[0044]In step 101. under the control of the sedimentary model, four sand body correlation models are established, which are the contour correlation model, the plane phase change correlation model, the sand body superimposed interlayer correlation model, and the sand body undercut correlation model. Under the guidance of the four models, Carry out fine comparison and division of reservoir rhythm sections. The process goes to step 102.

[0045] In step 102, on the basis of the fine division results of the well point reservoir, for the case of interlayers between the rhyth...

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Abstract

The invention provides a fluvial facies multi-layer and thick-layer oil deposit fine modeling method. The method includes the steps of firstly, fine comparing division results according to well point reservoirs to form a well point rhythm layer layered database, and establishing a fine framework model of a reservoir rhythm layer through a reservoir interface control method; secondly, forming a well point micro-facies database according to a logging micro-facies mode, and establishing a sedimentary facies model through a plane micro-facies distribution mode control method; thirdly, forming a logging fine explanation well point parameter database according to a logging fine explanation model, and establishing a property model of the reservoirs through a facies model control method. By establishing the reservoir fine model, the plane and longitudinal anisotropism characteristics of the oil deposit can be accurately depicted, and therefore the aim of guiding the plane and longitudinal remaining oil distribution rule research is achieved.

Description

technical field [0001] The invention relates to the field of fine reservoir description in petroleum development, in particular to a fine modeling method for fluvial multi-layer and thick-bed reservoirs. Background technique [0002] Fluvial facies multi-layer and thick-bed reservoirs have many vertical oil layers. After the reservoir development enters ultra-high water cut, the heterogeneity of the reservoir becomes more serious, the distribution of remaining oil and its influencing factors become more complicated, and the remaining oil in the sand body taps its potential gradually. As the main target of oilfield development, the establishment of fine model of fluvial multilayer and thick reservoir determines the heterogeneity inside the sand body, and then controls the distribution of remaining oil. Therefore, it is very important to carry out research on fine modeling methods of fluvial facies multi-layer and thick-bed reservoirs to lay the foundation for the study of rem...

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Application Information

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IPC IPC(8): E21B49/00E21B47/00
CPCE21B47/00E21B49/00
Inventor 王宁柳世成任侨李响陈宁宁杨仁金赵培坤郭士博张林张娣房士然宋海渤郭长春孙永杰赖书敏
Owner CHINA PETROLEUM & CHEM CORP
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