Volcanic rock reservoir productivity prediction method and device

Abstract

The invention provides a volcanic rock oil reservoir productivity prediction method and device. The method comprises the steps: acquiring volcanic rock reservoir description indexes of a first targetoil well with an effective reservoir confirmed to exist; determining the type of the effective reservoir according to the volcanic rock reservoir description index so as to determine the reservoir thickness of the effective reservoir according to the type of the effective reservoir; acquiring two different thickness undetermined coefficients corresponding to the reservoir thickness; according to preset accumulated oil production prediction time and the two different thickness undetermined coefficients, predicting the accumulated oil production of the first target oil well within the accumulated oil production prediction time, and determining a development scheme of the first target oil well based on a corresponding prediction result. The accuracy of volcanic rock oil reservoir productivityprediction can be improved, and then the high efficiency of volcanic rock oil reservoir high-quality reservoir development is improved.

Description

technical field [0001] This application relates to the technical field of development of special lithology reservoirs, in particular to a method and device for predicting productivity of volcanic rock reservoirs. Background technique [0002] In the history of petroleum exploration and development in the world, clastic rock and carbonate rock reservoirs are often the main objects of oil and gas reservoir exploration and development, while relatively deep buried volcanic rock reservoirs, due to their complex lithology and lithofacies characteristics, Reservoir identification and distribution prediction are difficult and often neglected by us. Since the beginning of the 20th century, with the development of the petroleum industry and the continuous improvement of exploration and development technology, the exploration and development of volcanic oil and gas reservoirs at home and abroad have been continuously successful, such as the United States, Cuba, Japan, Ghana and other ...

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Problems solved by technology

The research on productivity prediction of conventional clastic rock reservoirs using logging data is based on a large number of oil testing, logging interpretation and core analysis data to directly establish a statistical relationship with productivity. For example, Ouyang Jian et al. (1994) proposed to use effective Permeability and oil saturation are used to evaluate reservoir productivity; the other is to use mathematical algorithms, such as principal component analysis and fuzzy mathematics, to predict reservoir productivity (Li Rui et al., 2003, Tan Chengqian et al., 2004, Luo Yu et al., 2003), achieved a certain effect, but it is not completely suitable for the quantitative productivity prediction of volcanic fracture and pore dual media reservoirs

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