Characteristics of Cretaceous Reservoir in Shenmu-1Well byMicroscopic ChipsObservation

Abstract

Abstract: The Cretaceous Shushanhe Formation in Shenmu-1 well in Wushi sag is mainly fine litharenite, pebbly sandstone & sandstone-conglomerate in plain and front channel bed of fan delta. The average porosity of well logging and core analysis is about 9% and the reservoir is characterized by low porosity and low permeability. Observed by microscopic chips, the Cretaceous segment of 5118.8m~5143.05m in Shenmu-1 well has high amount of Carbonate grain, and high content of carbonate debris particles at 5108.05~5117.83m. The Shushanhe Formation with undeveloped pores is mainly dissolution pore, structural fractures and crush fractures develop in thick rocks, which contribute a lot to the productivity of Shenmu-1 well.

Key words: Wushi sag, Shenmu-1 well, Shushanhe Formation, quartzite, carbonate debris, crush fractures

CLC Number:

P618.13

Zhang Lijuan, Zhu Guohua, Wei Yanping and Cheng Ming. Characteristics of Cretaceous Reservoir in Shenmu-1Well byMicroscopic ChipsObservation[J]. China Petroleum Exploration, 2010, 15(3): 22-24,29,6.

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Characteristics of Cretaceous Reservoir in Shenmu-1Well byMicroscopic ChipsObservation

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