Multi-control reservoir prediction method used for improving prediction accuracy of complex clastic rock reservoir

Abstract

The invention provides a multi-control reservoir prediction method used for improving the prediction accuracy of a complex clastic rock reservoir, and belongs to the field of geophysical reservoir prediction. The method comprises the steps that (1) according to a geological research result, reservoir forming combination modes are acquired, and then constraint factors are acquired according to the reservoir forming combination modes, wherein the reservoir forming combination modes comprise a lower-growth upper-storage type combination mode and an upper-growth lower-storage type combination mode, and the constraint factors comprise a well point constraint factor Fw and a space constraint factor Fs; and (2) reservoir prediction under the control of the space constraint factor is carried out. According to the step (2), constraint is carried out on a seismic attribute result by using the space constraint factor Fs acquired by the step (1), so as to acquire a rich gas reservoir prediction result under multi-control constraint; specifically, the formula that Ag is equal to A*Fs is used to carry out prediction; Ag is the rich gas reservoir prediction result under the multi-control constraint; and A is a seismic attribute value. According to the invention, the accuracy of reservoir prediction is greatly improved.

Description

technical field [0001] The invention belongs to the field of geophysical reservoir prediction, in particular to a multi-control reservoir prediction method for improving the prediction accuracy of complex clastic rock reservoirs. Background technique [0002] Seismic reservoir prediction is a new concept proposed in the 1980s to meet the new needs of oil and gas field exploration and development. Its technologies include seismic lithology prediction technology, physical property prediction technology, fluid detection technology and comprehensive evaluation technology; There are differences and phases in solving problems in different exploration and development stages, and there are great differences in the ideas, methods, and techniques of reservoir prediction; thus forming many branch disciplines, such as seismic stratigraphy, seismic sedimentology, and seismic reservoir geology Wait. Specific to method technology, it mainly includes attribute technology and inversion tech...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and to provide a multi-control reservoir prediction method for improving the prediction accuracy of complex clastic rock reservoirs. "Seismic prediction has strong multi-solutions and difficult oil (gas) prediction. The proposed method uses the spatial combination of accumulation elements to control seismic reservoir prediction results, reduces seismic reservoir prediction multi-solutions, and improves reservoir prediction accuracy; it can be used for complex fractures. Debris Reservoir Prediction Field

Utilizing accumulation control factors to constrain the seismic prediction results of complex clastic rock reservoirs, it solves the problem of strong multiple solutions in seismic reservoir prediction, improves the prediction accuracy of oil (gas) rich reservoirs, and provides accurate and reliable data for exploration and development area selection evaluation and well location deployment. based on

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