原生裂缝是指岩石在成岩过程中产生的裂缝。
川中大安寨组是受岩性岩相控制的原生裂缝性油藏。
Daanzhai Limestone is referred to as a primary fractured reservoir controlled by lithology and lithofacies.
本区火山岩油藏的裂缝类型主要有以下几种：原生裂缝和次生裂缝。
There were several major types of fractures of the volcanic rock reservoirs: primary fracture and secondary fracture.
大曲裂缝的形成有原生裂缝、气生裂缝和在贮存过程中形成的裂缝之分。
The formation of Daqu crackes could be divided into pre-existing crackes, gas-producing crackes, and the crackes formed during storage.
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