Polymer flooding seepage simulation method and system

A technology of seepage simulation and polymer, which is applied in the field of polymer flooding seepage simulation realization method and system, which can solve the incomplete description of polymer flooding seepage mechanism, limited availability, pertinence and accuracy of block simulation results, and failure to meet on-site requirements. Application and other issues
CN107977490AActive Publication Date: 2018-05-01CHINA NAT OFFSHORE OIL CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2018-05-01

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Abstract

Embodiments of the invention disclose a polymer flooding seepage simulation method and system. The method comprises the following steps of: obtaining oil-phase, water-phase and gas-phase state equations abided by polymer flooding on the basis of a plurality of pre-established mathematic representation equations; and solving preset oil-phase, water-phase and gas-phase continuous equations abided byconventional polymer flooding and a mass transfer diffusion equation when chemical matters in polymer systems are transferred in water on the basis of the established state equations so as to realizepolymer flooding seepage simulation. The plurality of mathematic representation equations comprises a polymer mechanical degradation mathematic representation equation, a polymer dynamic adsorption mathematic representation equation, a polymer blockage mechanism mathematic representation equation and a polymer tackifying characteristic mathematic representation equation. Through the method and system, the problems that the current polymer flooding simulation method insufficiently describes a part of important polymer flooding seepage mechanisms and cannot satisfy demands of field applications, and the availability, pertinence and correctness of a part of block simulation results are limited are solved.
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Description

technical field

[0001] The embodiment of the present invention relates to the technical field of polymer flooding seepage flow mechanism and numerical simulation method, and in particular to a polymer flooding seepage flow simulation implementation method and system. Background technique

[0002] The large-scale test and application of polymer flooding in my country has been carried out for more than 20 years. It is the main method in tertiary oil recovery, and it is also the focus of further improvement and promotion in the future. Due to the complexity of tertiary oil recovery technology and the high investment and high risk of the test, it is necessary to use reservoir numerical simulation technology to assist research and predict indicators, which has important practical significance for guiding field tests and oilfield development.

[0003] At present, almost all the polymer flooding simulation theories put into commercial application are established based on foreign re...

Claims

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