论文部分内容阅读
吐玉克油田主要由深部稠油油藏组成，原油密度大、粘度高、沥青质含量多、轻质组分少，这些特征与其成藏条件及成藏过程密切相关。通过对吐玉克油田的生、运、储、盖条件和构造演化史的分析认为，吐玉克油田的原油主要来自二叠系源岩，生排烃期是晚三叠世－早侏罗世；储集层为三叠系克拉玛依组；盖层为克拉玛依组上部厚达５０～１７０ｍ的泥岩；圈闭构造为形成于晚三叠世末期的克拉玛依运动，经中－早期燕山运动的继承和发展起来的断背斜－断鼻构造；油气运移期为晚三叠－早侏罗世和晚白垩世两期，且以晚三叠－早侏罗世为主；油气运移通道是鲁克沁构造带的断层和克拉玛依组的高渗透砂层。
The Tuyuke oilfield mainly consists of deep heavy oil reservoirs with high crude density, high viscosity, more asphaltene content and less light components, which are closely related to their hydrocarbon accumulation conditions and hydrocarbon accumulation. Based on the analysis of the tectonic, transport, reservoir-capping conditions and tectonic evolution of the Tuyuke oilfield, it is concluded that the crude oil from the Tuyuke oilfield is mainly derived from Permian source rocks, and the hydrocarbon generation and expulsion periods are Late Triassic-Early Jurassic The reservoirs are Triassic Karamay Formation and the caprock is mudstone of upper 50 ~ 170m thickness in Karamay Formation. The trap structure is the Karamay Formation formed in the late Triassic. After the succession of the Yanshan Movement in the middle-early Yanshan and Developed faulted anticline and fault nose structure, and the hydrocarbon migration period is Late Triassic-Early Jurassic and Late Cretaceous, with the Late Triassic-Early Jurassic being dominant. The hydrocarbon migration channel is Luke Faults of Qin tectonic belt and high permeable sand layer of Karamay Formation.