Analysis on Influencing Factors of Solution-Type Secondary Pore-Evolution in Clastic Reservoirs

Liu linyu; Chen Gang; Liu yiqun; Di Shixiang; Xue Xiangxu

The solution-type secondary pore is one of the most important types of pores in clastic reservoirs. The forming mechanism of solutio n-type secondary pores is one of the problems which petroleum geologist are very much interested in. By means of analytical test data of clastic reservoirs in Northern part depression of Tuha basin and Bazhou depression of Minhe basin, the influencing factors of solution-type secondary pore-evolution of clastic reservoirs in the researching region are analysed in this paper. Through research, the author indicates that the formation and preservation of the primary effective clastic rock bodies are controlled by sedimentation and diagenesis. The out standing change of pore fluid properties in diagenetic evolution of effective clastic rock bodies is direct cause which the solution-type secondary pores are formed on a large scale.

Geology Department of the Northwest University Xi'an 710069

Received Date: 1997-05-08

Rev Recd Date: 1997-09-09

Publish Date: 1998-06-10

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Abstract: The solution-type secondary pore is one of the most important types of pores in clastic reservoirs. The forming mechanism of solutio n-type secondary pores is one of the problems which petroleum geologist are very much interested in. By means of analytical test data of clastic reservoirs in Northern part depression of Tuha basin and Bazhou depression of Minhe basin, the influencing factors of solution-type secondary pore-evolution of clastic reservoirs in the researching region are analysed in this paper. Through research, the author indicates that the formation and preservation of the primary effective clastic rock bodies are controlled by sedimentation and diagenesis. The out standing change of pore fluid properties in diagenetic evolution of effective clastic rock bodies is direct cause which the solution-type secondary pores are formed on a large scale.

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Analysis on Influencing Factors of Solution-Type Secondary Pore-Evolution in Clastic Reservoirs

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