Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5782054 | Marine and Petroleum Geology | 2017 | 47 Pages |
Abstract
The Huoshiling Formation consists of two volcanic cycles and one volcanic-sedimentary cycle. The formation mechanisms of volcanic reservoirs include three processes based on the strata's evolution. First, CUs formed and primary pore spaces developed near cooling surfaces. Second, CUSs and VCs formed and parasyngenetic and secondary pore spaces developed around the crater or caldera, especially near the weathering surface. Lastly, numerous dissolved pores and structural fractures formed during burial and concentrated near the fault belt. CUs, volcanic edifices and structural systems controlled the formation of volcanic reservoirs. The overlapping crater-proximal crater region and the faulted area were centres of reservoir formation. In the Huoshiling Formation, CUS 6-CUS 8 and CUS 13 are the major horizons where volcanic reservoirs developed, forming dissolution reservoirs and structurally fractured reservoirs for natural gas accumulation.
Keywords
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Authors
Fei Jiang, Rihui Cheng, Baotao Ruan, Bo Lin, Zhongjie Xu, Zhongcheng Li,