天热气化 第33卷第3期 0IL&GAS GEOLOGY 2012年6月 文章编号:0253—9985(2012)03—0459—08 缝洞型碳酸盐岩储集体特征及预测 ——以A油田Pz段为例 王兆峰 ,陈 鑫 ,王 鹏 ,于文文 ,李 强 (1.中国地质大学地球物理与信息技术学院,北京100083;2.中国石油集团东方地球物理公司研究院,河北涿州072751) 摘要:以A油田P 段储集体为研究对象,采用井震联合技术进行精细连井标定可以增强层位标定横向上的连续性和可靠 性。引入现代岩溶理论指导基底顶面构造解释,落实尖灭线及构造圈闭。研究区重新落实碳酸盐古潜山构造52.7 km , 增加了勘探开发的面积。利用三维可视化技术展现古地貌特征,将古地貌分为峰丛洼地、峰林谷地和古侵蚀沟3种类型。 综合地质、测井和地震响应特征,将研究区储集体分为溶洞孔隙型、裂缝孔隙型和裂缝型3种类型。综合地震反演和蚂蚁 体追踪建模技术,明确了研究区3类储集体的空间展布特征。认为I类溶洞孔隙型储集体主要沿古构造高部位发育,而 且位置越高储层厚度越大;11类裂缝孔隙型储集体发育于构造斜坡部位;m类裂缝型储集体受断裂影响明显,发育于断裂 附近。 关键词:缝洞型储层;碳酸盐岩;储层预测 中图分类号:TEl21.1 文献标识码:A Characteristics and prediction of fracture-vug carbonate reservoirs —an example of P layer in A oilfield Wang Zhaofeng ,Chen Xin ,Wang Peng ,Yu Wenwen and Li Qiang。 (1.Geophysical and Information Technology Institute,China University of eosGciences,Beijing 100083,China; 2.BGP Geophyscial Research Institute,CNPC,Zhuozhou,Hebei 072751,China) Abstract:This paper studied the reservoir of P layer in A oilifeld.Fine cross—well calibration by using the tech- nique of log—seismic integration can improve the lateral continuity and reliability of stratigraphic correlation.Mo- dern karst patterns were introduced to guide basement top structure interpretation,and to delineate pinch・out line and structural trap.The newly found buried hill stuctrure is 52.7 km .which increase the exploration area.We divided the palaeogeomorphology into peak—cluster depression,peak forest valley and paleo-erosive gulley with 3 D visualization technique.Based on integration of geologic data,logging data and seismic response,we divided the reservoirs into three types including cavern—pore fracture-pore and fracture types.We delineated the distribu— tion of the reservoirs through seismic inversion and ant tracking modeling.Type I reservoirs(i.e.cavern-pore type)mainly occur on paleo-stuctrure highs and their thickness enlarge along with their increasing height.Type I1 reservoirs(i.e.fracture-pore type)distribute at the slope of the structure.Type llI reservoirs(i.e.fracture type)occur near faults,thus are signiifcantly affected by the faults. Key words:fracture—vug reservoir,carbonate rock,reservoir prediction 缝洞型碳酸盐岩油气藏是全球油气增储上 酸盐岩油气藏的勘探开发成为一项世界级难 题 。多学科综合应用进行储集体的预测是解决 这项难题的有效途径 坞 。以A油田P 层的缝洞 产的重要领域之一 。由于该储集体形态复杂, 非均质性强,钻探成功率一直不高,使得缝洞型碳 收稿日期:2012一o4一O1;修订日期:2012—05—13。 第一作者简介:王兆峰(1966一),男,博士后、高级工程师,油气藏评价与开发。 石油与天然气地质 第33卷 为峰丛洼地、峰林谷地和古侵蚀沟3种类型。综 合地质、测井和地震响应特征,将研究区储集体分 为溶洞孔隙型、裂缝孔隙型和裂缝型3种类型。 应用地震反演和蚂蚁体追踪建模技术,弄清了研 究区3类储集体的空间展布特征。认为I类溶洞 孔隙型储集体主要沿古构造高部位发育,而且位 置越高储层厚度越大;11类裂缝孔隙型储集体发 育于构造斜坡部位;Ⅲ类裂缝型储集体受断裂影 响明显,发育于断裂附近。 参考文献 [1]康玉柱.中国海相油气田勘探实例之四——塔里木盆地塔 河油田的发现与勘探[J].海相油气地质,2005,10(4): 31—38. Kang Yuzhu.Cases of discovery and exploration of marine ifelds in China(Part 4):tahe oilifeld in Tarim basin[J].Marine Ori— n Petroleum Geology,2005,10(4):3l一38. [2] 张抗,王大锐.中国海相油气勘探的启迪[J].石油勘探与 开发,2003,30(2):9—16. Zhang Kang,Wang Darui.Some thoughts on petroleum explora- tion in marine sedimentary basins of China『J].Petroleum Ex— ploration and Development,2003,30(2):9—16. [3] 杨敏,靳佩.塔河油田奥陶系缝洞型油藏储量分类评价技 术[J].石油与天然气地质,201l,32(4):625—630. 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