一种复杂构造区页岩气藏保存条件评价方法

• Format: Patent
• Language: Chinese
• Published: 22.03.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; DETECTING MASSES OR OBJECTS; ELECTRIC DIGITAL DATA PROCESSING; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

本发明公开了一种复杂构造区页岩气藏保存条件评价方法，通过计算目标页岩气藏的侧向散失条件和页岩层基础条件，获得各项参数值和理想临界状态的标准值，基于占比因子构建雷达图，将标准值映射为正n边形的标准区域，分别计算占比因子连线区域在标准区域内外的映射面积S1和S2，以及标准区域中占比因子连线区域未覆盖的面积S3，得到气藏保存条件评价的量化表征结果。该方法能够全面反应页岩气藏保存条件，为页岩气的开采提供参考。 The invention discloses a complex structure area shale gas reservoir preservation condition evaluation method, which comprises the following steps: calculating lateral loss conditions of a target shale gas reservoir and basic conditions of a shale layer to obtain various parameter values and standard values of an ideal critical state, constructing a radar map based on a proportion factor, mapping the standard values into a standard area of a regular n-polygon, and evaluating the preservation condition of the target shale gas reservoir. And respectively calculating mapping areas S1 and S2 of the proportion factor connection line area inside and outside the standard area and an area S3 which is not covered by the proportion factor connection line area in the standard area, and obtaining a quantitative characteri