南堡凹陷滩海地区储层特征及含油气性预测  

Features and oiliness evaluation of reservoir in beach area, Nanpu sag

作　　者：徐小龙[1] 王红亮[1] 蒋有录[2] 田涛 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中国石油大学(华东)地球科学与技术学院,山东青岛257061 [3]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《辽宁工程技术大学学报（自然科学版）》2016年第12期1418-1425,共8页Journal of Liaoning Technical University (Natural Science)

基　　金：国家油气重大专项(2008ZX05050)

摘　　要：为研究南堡凹陷滩海地区深层储层特征和输油性能,采用铸体薄片、岩心分析化验等资料,从控制渗流能力和油气运聚成藏角度出发,选取孔隙度、渗透率、孔隙半径、排替压力4个参数,建立储层输油性能评价预测体系,运用公式法,进行定量评价,研究储层含油气性下限值.结果表明:研究区储层储集空间以残余原生粒间孔隙、粒间溶蚀孔隙和粒内溶蚀孔隙为主;次生孔隙主要为碳酸盐岩胶结物和长石颗粒溶蚀形成,其次为岩屑溶蚀.溶解成岩作用有利于深部储层次生孔隙发育,减弱储层总孔隙度损失量,有利于砂体输油性能的改善.储层含油气性下限预测值分别为孔隙度8.24%,渗透率0.10×10^(-3)μm^2,孔喉半径0.28μm,排替压力0.84 MPa.这有助于南堡凹陷深层储层特征研究和勘探目标优选.To study the reservoir characteristics and conducting performance in beach area, Nanpu sag, this paper used the casting slices and core testing data, and optimized the characteristic parameters, such as porosity, permeability, radius of the pore throat and displacement pressure from the view of the permeability and the migration and accumulation of oil and gas. On the basis of the four parameters, the reservoir conducting performance was quantitatively studied by using the formula method, and the lower limit of oil-bearing properties of sandstone reservoirs was quantitatively investigated. The pore tapes of the reservoirs are mainly residual intergranular pore, intergranular dissolved pore and intragranular dissolved pore. The secondary pores mainly derived from carbonate cements, fledspars and lithoclasts. The dissolving-diagenes is in favor of the formation of secondary pores in deep layers, and improving the reservoir conducting performance by weakening total reservoirs porosity loss. The results showed that the porosity values 8.24%, the permeability values 0.10×10^-3μm^2, the pore throat radius values 0.28μm, and the displacement pressure values 0.84MPa, which helps an in-depth understanding on the reservoir characteristics and optimizing the exploration target.

关 键 词：含油气性 输导性能 次生孔隙 储层特征 南堡凹陷 

分 类 号：TE122[石油与天然气工程—油气勘探]