页岩气资源评价方法优选

发布时间：2018-02-14 20:15

本文关键词： 页岩气资源评价方法方法优选　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：我国页岩气地质条件复杂、沉积类型多样、勘探开发程度不一,在此背景下,单一的资源评价方法不能同时满足所有的类型和条件,而根据实际情况选择针对性的资源评价方法显得尤为重要。通过系统梳理页岩气资源评价方法,指出影响资源评价方法选择的影响因素主要为勘探开发程度、沉积相和构造作用。根据勘探开发投入工作量等,可将页岩气勘探开发程度划分为低、中、较高和高四个阶段,各阶段所能提供参数的类型、丰富程度及质量各不相同。从海相到海陆过渡相再到陆相,从原形盆地到改造盆地,再到残留盆地,各不同条件下富有机质页岩分布及相关参数变化差异较大。勘探开发程度及不同地质条件的差异通过页岩气资源评价关键参数的变化来影响资源评价方法的优选。根据不同勘探开发程度、沉积环境、构造作用下类型盆地的参数特征,分别对页岩气资源评价方法进行了讨论及优选。低勘探开发程度地区可选用成因法、类比法、规模序列法及特尔菲法,中勘探开发程度地区可选用盆地模拟法、体积法、概率体积法和评价单元划分法,较高勘探开发程度地区在中勘探开发程度那些方法基础上还可选用物质平衡法和递减曲线分析法,高勘探开发程度地区可选用FORSPAN法、物质平衡法、递减曲线法及规模序列法等;海相富有机质页岩评价方法可选用成因法、类比法、特尔菲法、体积法、物质平衡法,海陆过渡相可选用面积丰度类比法、EUR类比法、特尔菲法、概率体积法、盆地模拟法及规模序列法,陆相可选用成因法、类比法、特尔菲法、评价单元划分法、概率体积法及规模序列法,递减曲线法和FORSPAN法均可适用;原形盆地可选用成因法、体积法和物质平衡法,改造盆地可选用成因法、概率体积法、评价单元划分法和物质平衡法,残留盆地可选用概率体积法、评价单元划分法和规模序列法,类比法、特尔菲法、递减曲线和FORSPAN法均可适用。针对勘探开发程度、沉积环境及构造作用下盆地类型三大类资源评价方法进行了综合优选,提出了资源评价方法优选的流程。研究成果在一定程度上可解决不同条件下页岩气资源评价方法不明确问题,具有一定的理论创新及指导意义。
[Abstract]:The geological conditions of shale gas in China are complex, the sedimentary types are various, and the degree of exploration and development is different. Under this background, a single resource evaluation method can not satisfy all types and conditions at the same time. According to the actual situation, it is very important to select the targeted resource evaluation method. Through systematically combing the shale gas resource evaluation method, it is pointed out that the main influencing factor of the selection of the resource evaluation method is the degree of exploration and development. Sedimentary facies and tectonic processes. According to the workload of exploration and development, the degree of shale gas exploration and development can be divided into four stages: low, medium, high and high. The richness and quality are different. From the marine facies to the sea and land facies to the continental facies, from the prototype basin to the reformed basin, and then to the residual basin, The distribution of organic matter rich shale and its related parameters vary greatly under different conditions. The degree of exploration and development and the difference of geological conditions affect the selection of resource evaluation method through the change of key parameters of shale gas resource evaluation. ... depending on the degree of exploration and exploitation, Sedimentary environment, parameter characteristics of type basins under tectonic action, methods for evaluating shale gas resources are discussed and selected respectively. Genetic method, analogy method, scale sequence method and Delphi method can be used in low exploration and development area. The basin simulation method, volume method, probabilistic volume method and evaluation unit partition method can be used in the area of middle exploration and development. On the basis of the methods of middle exploration and exploitation degree, the material balance method and decline curve analysis method can be used in high exploration and development degree area, and FORSPAN method, material balance method, decline curve method and scale sequence method can be used in high exploration and exploitation area. The evaluation methods of marine organic matter rich shale are genetic method, analogy method, Delphi method, volume method, material balance method, area abundance analogy method and probability volume method. The basin simulation method and scale sequence method, the continental facies method, the genetic method, the analogy method, the Delphi method, the evaluation unit division method, the probabilistic volume method and the scale sequence method, the decline curve method and the FORSPAN method are all applicable. Volume method and material balance method, genetic method, probabilistic volume method, evaluation unit partition method and material balance method, probabilistic volume method, evaluation unit partition method and scale sequence method, analogy method, Delphi method, The decline curve and the FORSPAN method can be used. Three kinds of resources evaluation methods, such as exploration and development degree, sedimentary environment and tectonic action, are selected synthetically. The research results can solve the problem of unclear evaluation methods of shale gas resources under different conditions to a certain extent and have a certain theoretical innovation and guiding significance.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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