Main models and distribution patterns of gas reservoirs in large-medium gas fields of China |
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| Authors: | Yan Song Jinxing Dai Chunsen Dai Ying Chen Feng Hong |
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| Institution: | (1) Research Institute of Petroleum Exploration and Development, 100083 Beijing, China |
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| Abstract: | Based on characteristics and trap types of gas reservoirs in large and medium gas fields in China, 4 gas reservoir models
have been established:(i) structural trap gas reservoir model I, formed earlier than or simutaneously with generating of gases;
(ii) structural trap gas reservoir model II, formed later than generating of gases; (iii) fossil weathered residuum gas reservoir
model; and (iV) mud diapir abnormal temperature and pressure gas reservoir model. Distribution patterns of large-medium gas
fields are described with the concept of “sealed compartment”. It is concluded that the inner-compartment area, marginal area
of the compartment and the areas between two overlapped sealed compartments are the most favourable areas for discovering
large-medium gas fields.
Project supported by the “85–102” Chinese National Key Science and Technology Project. |
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| Keywords: | trap type gas reservoir model distribution pattern sealed compartment |
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