地质学报2012，Vol.86Issue(4)：535-547,13.
酒泉中新生代断坳叠合盆地及控油作用
Mesozoic and Cenozoic Fault Superposition Basin in Jiuquan and Its Oil-Controlling Significance
摘要
Abstract
Based on identification markers of sedimentary basins such as tectonic settings and geometry of the basins, sedimentary structures, paleogeotemperature and volcanic rocks, it is concluded that Jiuquan basin is a Mesozoic and Cenozoic fault superposition basin, which was an extensional fault basin during Early Cretaceous and an intracontinental compressional fault basin and intercontinental foreland basin during Cenozoic. The basin of this kind is characterized by orthogonal superposition of between intracontinental fault basin or foreland basin and fault basin. Superposition modes of intracontinental fault superposition basins can be classified into drape, local and non-superposed. Based on the superposed structure location of the Cretaceous fault basin and intracontinental foreland basin, the superposition can be divided into four types: the superposition of the Cretaceous secondary sag with Cenozoic foreland thrust belt, the Cretaceous secondary sag with Cenozoic foreland depression, the Cretaceous secondary sag with Cenozoic foreland slope and the Cretaceous secondary sag with Cenozoic depression after foreland uplift. During the Mesozoic and Cenozoic, superposition basins controlled oil and gas accumulation. Early Cretaceous fault basin controlled the distribution of hydrocarbon source rock, and scale and quality of various oil-and gas-bearing depressions. During Middle Cenozoic, basin superposition not only promoted source rock mature, provided strong forces for oil and gas migration, but also played a vital role in formation of structure traps and oil-gas migration and development of reservoirs fissures. It is the differences of superposition modes and various secondary depression intensities that jointly resulted in the differences of oil and gas migration and accumulation, reservoir characteristics and enrichment degree.关键词
酒泉盆地/中新生代/断陷盆地/陆内前陆盆地/叠合盆地/控油作用Key words
Jiuquan basin/ Mesozoic and Cenozoic/ fault basin/ intracontinental foreland basin/ superposition basin/ oil and gas controlling引用本文复制引用
潘良云,曾佐勋,李明杰,张宏伟,郑孟林,张军勇..酒泉中新生代断坳叠合盆地及控油作用[J].地质学报,2012,86(4):535-547,13.基金项目
本文为中国石油勘探生产分公司油气勘探新领域综合研究项目(编号28153009013)、玉门油田分公司油气勘探项目(编号BGP200901967)资助的成果. （编号28153009013）
