碳酸盐岩储集层定量评价——以塔河油田为例  

A Quantitative Evaluation of Carbonate Reser-voir-An example of Tahe oilfield.

作　　者：张诗青[1] 樊政军 柳建华 高秋涛[1] 刘杰[1] 

机构地区：[1]新疆石油管理局测井公司,新疆克拉玛依834000 [2]中石化新星石油公司西北石油局测井站,新疆乌鲁木齐830011

出　　处：《新疆石油地质》2003年第2期146-148,共3页Xinjiang Petroleum Geology

摘　　要：塔河油田奥陶系碳酸盐岩是一套低孔、低渗缝洞型、非均质性强、流体性质多样化的复杂储集层,断层多、构造形态复杂。对于裂缝性储集层,电成像资料可以很直观、形象地反映裂缝的倾向、倾角,孔洞和溶蚀洞的发育程度,是目前最先进和最优越的适于裂缝地层的测井技术。另外,双侧向幅度差异在一定程度上也能反映裂缝的特征。因而,可综合利用常规、电成像资料、多极子声波XMAC等资料识别孔、洞、缝储集层。在结合生产实际的基础上,提出了利用“权重”评价法对塔河油田奥陶系储集层进行分类定量评价研究,经试油验证,符合率达92.3%.在此基础上,又对奥陶系I类储集层发育厚度进行了横向展布预测,结果表明,符合塔河油田的地区规律,应用效果很好。The Ordovician carbonate rocks in Tahe oilfield is a complex reservoir with low porosity,low permeability,fractures and vugs,serious heterogeneity as well as variety of fluid properties,along with multiple faults and complicated structural shapes.For fractured reser-voir,electrical imaging information can be used to directly or visually reflect the dip or dip angle of fractures and development of vugs and dissolved pores,etc.It is now the most advanced and optimal well log technique applied to fractured reservoirs.In addition,dual laterolog of conventional well log can offer differential amplitudes which may depict characters of fractures to a certain extent.Hence,combination of conventional well logs,electric imaging data and XMAC information could be adopted to identify the reservoir with pores,vugs and fractures.This paper proposes a method of'weight evaluation'for classification and quantitative evaluation of the Ordovician reservoir in Tahe oilfield on the basis of the actual production situation.By production testing verification,its coincidence rate is up to92.3%?Furthermore,prediction of lateral distribution of developed thickness of the Ordovician Grade I reservoir is made,and the results accord with real geological condi -tions of Tahe oilfield.This method is good for extensive application.

关 键 词：塔河油田 碳酸盐岩 储集层 测井技术 裂缝地层 定量评价 “权重”评价法 横向预测 电成像 

分 类 号：P631.84[天文地球—地质矿产勘探]