摘要
方法从油藏描述入手，结合色质、气相色谱和物性资料，研究了渤海海域内5个大、中型稠油油藏。目的指导新区勘探，预测开发有无经济价值。结果渤海海域内5个大型稠油油藏，其产油层埋藏浅；储层为高孔、高渗型；原油性质具“三高三低”特征；成因上属次生型，受构造后期抬升、生物降解及地层水洗氧化等因素控制。按成因可分为边水氧化型、底水稠变型和复合型三种类型；不同成因的稠油油藏原油性质在纵向上各有明显的规律性。结论处于凹陷边缘斜坡披覆构造可形成易开采的边水氧化型稠油油藏，并且此类油藏是今后勘探的首要目标之一。
Method Beginning with reservoir description, and integrating mass chromatography,gas chromatography and petrophyslcal data, this paper studies five large and medium sizedheavy oil reservoirs in Bobal sea. Purpose To guide exploration of new area and evaluate theeconomic value. Result The pay zone of the five large size heavy oil reservoirs in Bobal seaare shallow buried and are of high porosity and high permeability type. The crude oil is characterized by three high and three low. The reservoir belongs to secondary type from the viewpoint of origin, and is controlled by factors such as uplifting, biodegradation and formationwater oxidation. It can be divided into three types as edge water oxidation, bottom waterviscosifing and composite according to origin. The crude oil property varies vertically due todifferent origin of the reservoir. Conclusion Edge water oxidation type heavy oil reservoir islikely to be formed in foe drape structure located in the slopes of the edge depression which iseasy to be recovered and is considered to be the main target of the future exploration.
出处
《特种油气藏》
CAS
CSCD
1998年第3期18-22,共5页
Special Oil & Gas Reservoirs
关键词
稠油油藏
储层性质
油层性质
勘探
heavy oil reservoir, reservoir property, oil bearing formation property,origin, exploration, Bobal sea
