通过地质建模剖析古潜山碳酸盐岩裂缝性储层地质特征

doi:10.13809/j.cnki.cn32-1825/te.2021.05.004

Abstract

Abstract:

In order to solve the problems in Oilfield Q, such as unclear understanding of geological model, strong heterogeneity of reservoir development and complexity of production performance rule, the sedimentary characteristics and the fracture development of carbonate rocks in buried-hills have been summarized by comprehensive application of logging, drilling and coring, rock section, logging and 3D seismic data. The results show that, the Karst slope and highland are the main development areas of dolomite, where the karstification is intense and the dissolution pores are developed. The fractures are easy to appear so as to form the high-quality reservoirs. Karst depression mainly develops calcareous mudstone or argillaceous limestone, with poor reservoir physical property. The upper oil formation is mainly fractured reservoir with large thickness and developed fractures, while the lower oil formation mainly develops dissolution reservoir. On the basis of this achievements, the geological mode is summarized and the geological model of a dual porosity medium reservoir is established by combination of dynamic and static methods. This achievement has been well applied in the actual development of the oilfield, and has a certain guiding significance for the fine and efficient development of similar fractured reservoirs.

Key words: Fractured reservoirs, dual porosity medium, attribute model, geological modeling, buried-hill, Bohai Bay basin

CLC Number:

TE122

Li’an ZHANG,Shaopeng WANG,Lan ZHANG, et al. Analysis on geological characteristics of fractured carbonate reservoir in buried-hill by geological modeling[J]. Petroleum Reservoir Evaluation and Development, 2021, 11(5): 688-693.

Figures/Tables 10

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References 16

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层位		代表井段（m）	厚度（m）	裂缝产状
层位		代表井段（m）	厚度（m）	延伸方向（° ）	倾角（° ）
上油组	凤山组	3 000~3 032	32	170~350	80~85
	凤山组	3 035~3 050	15	120	85
	固山组	3 110~3 120	10	150	20~40
	张夏组	3 163~3 173	10	55	35~50
	毛庄组	3 184~3 193	9	260	70~80
	府君山组	3 270~3 297	27	50	60~80
下油组	下马家沟组	3 040~3 070	30	170~350	70~80
		3 040~3 070	30	80~260	60~70
		3 110~3 140	30	160~340	60~70
		3 110~3 140	30	70~250	60~70
	亮甲山组	3 250~3 310	60	260	50~60
	亮甲山组	3 340~3 360	20	170	60~70

Analysis on geological characteristics of fractured carbonate reservoir in buried-hill by geological modeling

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