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Characteristics of Ordovician limestone fractures in the northern Tarim Basin and their controlling effects on karst reservoirs
Pages: 933-940
Year: Issue:  6
Journal: Acta Petrolei Sinica

Abstract: 构造作用形成的裂缝对碳酸盐岩岩溶储层的形成及改造至关重要.对大量的岩心、薄片、阴极发光、成像测井及测试资料的综合研究表明,塔北地区奥陶系灰岩段发育有3类成岩缝和3期构造(溶蚀)缝.3期构造缝对应3个构造旋回,分别为晚加里东-早海西期方解石及泥质充填的构造张裂缝、晚海西期-印支期方解石充填的共轭剪切缝以及燕山-喜山期半充填或未充填的剪性网状微-小缝.构造缝的形成直接促进了岩溶作用的发生,溶蚀缝往往改...
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