松辽盆地白垩系营城组火山机构储层定量分析  

Quantitative analysis on reservoirs in volcanic edifice of Early Cretaceous Yingcheng Formation in Songliao Basin

作　　者：唐华风[1] 庞彦明[2] 边伟华[1] 王璞珺[1] 闵飞琼[1] 丁日新[2] 

机构地区：[1]吉林大学地球科学学院,长春130061 [2]大庆油田勘探开发研究院,黑龙江大庆163712

出　　处：《石油学报》2008年第6期841-845,852,共6页Acta Petrolei Sinica

基　　金：国家重点基础研究发展规划(973)项目(2006CB701403);国家自然科学基金项目(No.40372066)联合资助

摘　　要：根据火山岩形态和内部结构，将松辽盆地白垩系营城组火山机构划分为火山口近火山口相带、近源相带和远源相带。基于304个钻井岩样的孔隙度、渗透率和压汞法毛细管压力曲线资料，对火山机构3个相带的储层特征分析结果表明，火山口-近火山口相带的储层具有大孔隙、宽长裂缝、孔喉半径大、孔喉分选好的特征，实测孔隙度为2％～25％，平均为7．74％，实测渗透率为（0．01～100）×10^-3μm^2，平均为1．99×10^-3μm^2，属于中孔高渗储层，局部为高孔高渗储层。近源相带的储层具有中等孔隙、窄小裂缝、孔喉半径较大、孔喉分选较好的特征，实测孔隙度为1％～15％，平均为7．47％，实测渗透率为（0．01～20）×10^-3μm^2，平均为0．95×10^-3μm^2，属于中孔中渗储层，局部为中孔高渗储层。远源相带的储层具有中小孔隙、宽长裂缝、孔喉半径小、孔喉分选差的特征，实测孔隙度为1％～10％，平均为6．95％，实测渗透率为（0．02～1）×10^-3μm^2，平均为0．13×10^-3μm^2，属于中低孔低渗储层。目前火山岩勘探的有利目标为火山口-近火山口相带。According to occurrence, lithological association of volcanic rocks and volcanic facies composition in the Early Cretaceous Yingcheng Formation of Songliao Basin, the volcanic edifice was classified into three kinds of cracter-near cracter facies belt, proximal facies belt and distal facies belt. The reservoirs characteristics in each facies belt of volcanic edifice were analyzed using the parameters of porosity, permeability and mercury-injection capillary pressure curve from 304 drilling samples. The reservoir in the crater-near crater facies belt is characterized by big pore, wide and long fracture, big pore-throat radius and pore-throat well-sorted. The measured porosity ranges from 2% to 25%, and the average value is 7.74%. The range of permeability is from 0.01×10^-3μm^2 to 100 ×10^-3μm^2 , and the average value is 1.99 ×10^-3μm^2. In the crater-near crater facies belts, most reservoir is charaterized by middle porosity and high permeability, the local parts are the reservoir with high porosity and high permeability. The reservoir in the proximity facies belt is of the properties of middle pore, narrow and small crack, middle pore-throat radius and pore-throat slightly well-sorted. The range of porosity is from 1% to 15%, and the average value is 7.47 %. The range of permeability is from 0.01×10^-3μm^2 to 20 ×10^-3μm^2, and the average value is 0.95 ×10^-3μm^2. The proximal facies belt mostly is the reservoir with middle po rosity and permeability. Some part of the belt is the reservoir with middle porosity and high permeability. The distal facies belt is the reservoir with middle small pore, wide and long crack, small pore-throat radius and pore-throat bad-sorted. The range of porosity is from 1% to 10%, and the average value is 6.95%. The range of permeability is from 0.02 ×10^-3μm^2 to 1. 0×10^-3μm^2 , and the average value is 0. 13×10^-3μm^2. The distal facies belt is the reservoir with middle-small porosity and low permeability. The craternear crater facies belt is the preferable targ

关 键 词：松辽盆地 火山机构相带 火山岩储层 宏观特征 微观结构 

分 类 号：TE112.23[石油与天然气工程—油气勘探]