摘要
碳酸盐受到后期成岩作用和构造改造作用的控制,沉积环境对其储层发育只是具有一定的影响,甚至很多碳酸盐岩储层的发育与沉积环境没有直接关系,尤其是年代较老、以裂缝为主的裂缝型储层或古岩溶作用形成的缝洞型储层等。在沉积岩石学特征研究的基础上,分析了古岩溶特征及成岩作用,将阿克库勒凸起古岩溶作用期次划分为暴露区淡水岩溶作用、浅埋藏混合水岩溶作用和深埋藏期岩溶作用三个阶段,对塔河油田4区奥陶系开阔台地相碳酸盐岩风化壳缝洞型储层的研究起到积极的作用。
Carbonate reservoir is controlled by the late diagenesis and structural transformation, depositional environment has a certain impact to the carbonate reservoir , Even the development of carbonate reservoirs are not related to depositional environment directly, Especially in older chronologic age, mainly in cracks or fractured reservoir or paleokarst-formed fractured-vuggy reservoir, etc. Based on the research on characteristics of sedimentary rocks, this paper analyzed the the features and diagenesis of ancient Karst, divived the Akekule Paleokarstification exposure into three stages as freshwater karst, shallow burial mix of water and deep buried karst, which play an active role to the research of Tahe oilfield 4 Ordovician open platform carbonate rock weathering crust of fractured reservoir.
出处
《石油地质与工程》
CAS
2010年第3期31-33,共3页
Petroleum Geology and Engineering
关键词
塔河油田
奥陶系
碳酸盐岩
古岩溶
Tahe oilfield
Ordovician
carbonate reservoir
ancient Karst
