Quantitative prediction method of cemented porosity reduction in clastic rock reservoirs
A prediction method and clastic rock technology, applied in prediction, data processing applications, instruments, etc., can solve problems such as difficulty in cementation amount and weak cementation strength of clastic rock reservoirs, and achieve the effect of reducing exploration and development costs.
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Embodiment 1
[0121] A quantitative prediction method for cemented porosity reduction, comprising the following steps:
[0122] 1) Collect geological data in the study area, which includes:
[0123] ①Study result map of sedimentary facies of the target layer in the study area;
[0124] ② Contour map of target layer interface structure;
[0125] ③ Contour map of the interface structure of the overlying strata on the target layer;
[0126] ④Reservoir physical property data in the study area;
[0127] ⑤Reservoir single well diagenesis data in the study area;
[0128] ⑥Diagenetic evolution sequence in the study area;
[0129] ⑦The burial history and thermal evolution history of the study area;
[0130] 2) Establish the original data database
[0131] (1) Sedimentary facies type database F_m
[0132] The sedimentary facies types of clastic rock reservoirs are summarized and classified, including: alluvial fan-dry fan-root F_1, alluvial fan-dry fan-middle F_2, alluvial fan-dry fan-edge F_3...
Embodiment 2
[0214] Based on the quantitative prediction method of cemented porosity reduction of clastic rock reservoirs above, the reservoirs of the second member of Dongying Formation in Bozhong sag are predicted, and the specific steps are as follows:
[0215] 1. Collect geological data in the study area
[0216]The geological data of the second member of the Dongying Formation in the Bozhong Sag were collected, and various types of data were classified according to the original data database. The collected geological data include the following contents: Sedimentary Facies Map of the Second Member of Dongying Formation, Lithology Map of the Second Member of Dongying Formation, Fracture Distribution Map of the Second Member of Dongying Formation, pH Map of the Second Member of Dongying Formation, The diagenetic stage diagram of reservoirs in the first member, and the sedimentary cycle diagram of reservoirs in the second member of Dongying Formation (such as figure 2 , 4 ~8 described)...
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