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

摘要/Abstract

摘要：

针对渤南海域Q油田地质模式认识不清、储层发育非均质性强、生产动态规律复杂等诸多难题,综合运用录井、钻井取心、岩石薄片、测井及三维地震资料总结古潜山碳酸盐岩沉积特征和裂缝发育规律。研究表明：岩溶斜坡和岩溶高地是白云岩主要发育区,岩溶作用强烈,溶蚀孔隙发育,容易产生裂缝形成优质储层,岩溶洼地主要发育灰质泥岩或泥质灰岩,储层物性较差;上油组储层厚度大、裂缝发育,主要为裂缝性储层,下油组主要发育溶蚀性储层。在此认识基础上总结地质模式,动静结合建立双孔介质储层地质模型。该项成果在本油田实际开发中得到较好应用,对类似裂缝性油藏的精细高效开发具有一定指导意义。

关键词: 裂缝性油藏, 双孔介质, 属性模型, 地质建模, 古潜山, 渤海湾盆地

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

中图分类号:

TE122

张立安,王少鹏,张岚,吴春新,袁勋. 通过地质建模剖析古潜山碳酸盐岩裂缝性储层地质特征[J]. 油气藏评价与开发, 2021, 11(5): 688-693.

ZHANG Li’an,WANG Shaopeng,ZHANG Lan,WU Chunxin,YUAN Xun. 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.

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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