Method for identifying ultra-deep carbonate reservoir

Abstract

The invention discloses a recognition method for an ultra-deep carbonate reservoir, and relates to the field of oil and gas development, and the method comprises the steps: obtaining rock physical parameters and seismic data of a target region, and building a rock physical model through an Xu. Payne model; carrying out intersection analysis on a plurality of parameters in the rock physical model, screening out sensitive parameters, and establishing a rock physical interpretation quantity version; obtaining a conventional attribute parameter field of the target area; assigning an initial weight value to each parameter field of the conventional attribute parameter field and the rock physics interpretation quantity version, and calculating to obtain the weight of the conventional attribute parameter field and the weight of the rock physics interpretation quantity version; obtaining a multi-attribute comprehensive attribute distribution diagram of the target stratum; and obtaining the reservoir distribution condition of the target area. In the reservoir identification process, the rock physical parameters are introduced, and the rock physical model is established through the Xu. Payne model, so that the rock physical model is suitable for the ultra-deep carbonate reservoir exceeding 7000 m.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to an identification method for ultra-deep carbonate reservoirs. Background technique [0002] Ultra-deep carbonate reservoirs are an important target of oil and gas exploration, and seismic identification of ultra-deep carbonate reservoirs is the key to the exploration of ultra-deep carbonate reservoirs. Ultra-deep carbonate rocks have the characteristics of super-deep burial, over 7000m deep, and strong concealment. Affected by the ultra-deep burial, the quality of seismic data is low, the identification is difficult, and the seismic reflection characteristics are not obvious. When using seismic data for identification, multiple solutions appear, which affects the identification results. Contents of the invention [0003] The purpose of this application is to overcome the problem of strong concealment of ultra-deep reservoirs in the prior art and difficulty in i...

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Problems solved by technology

[0003] The purpose of this application is to overcome the problem of strong concealment of ultra-deep reservoirs in the prior art and difficulty in identifying single seismic data, and to provide an identification method for ultra-deep carbonate reservoirs. In the process of reservoir identification , introduce petrophysical parameters, and establish a petrophysical model through the Xu.Payne model, making it suitable for ultra-deep carbonate reservoirs over 7000m, to achieve more accurate reservoir identification

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