渤海SZ油田非主力油层构型解剖及挖潜实践
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摘要
渤海SZ油田逐渐进入高含水期,为了进一步提高非主力油层的动用程度,在三角洲相储层构型理论指导下,应用新钻井岩心、水淹等资料,对油田开展精细解剖,明确了构型要素的空间接触关系,提出一种基于构型表征的注采连通程度定量分类方法。结果表明,SZ油田非主力油层以三角洲前缘坝缘微相为主,平面构型单元注采接触关系及层间相带干扰是导致其剩余油富集的主要因素。按照非主力油层的剩余油分布类型,采用"水平井开发动用、注采主流线小井距加密"等海上特色挖潜技术,可有效改善非主力油层的开发效果,为老油田的稳产、增产提供新的途径。
Bohai SZ oilfield is gradually entering a high water cut stage. In order to further improve the utilization degree of non-main reservoirs,the fine analysis of the oilfield is carried out using new drilling core data and water flooded data under the guidance of delta facies reservoir configuration theory,the spatial contact relationships among configuration elements are determined,and a quantitative classification method of injection production connectivity based on configuration characterization is proposed. The research result shows that,the non-main reservoirs in SZ oilfield are mainly delta front dam margin microfacies,and the injection-production contact relationship of planar configuration unit and the interlayer facies interference are the main factors of remaining oil. According to the distribution types of remaining oil in non-main oil reservoirs,some offshore characteristic potential tapping technologies such as " developing by horizontal wells and increasing the density of production wells along injection-production mainstream lines" can effectively improve the development effect of the non-main oil reservoirs,and provide a new way for the stable production and yield increase of old oilfields.
Bohai SZ oilfield is gradually entering a high water cut stage. In order to further improve the utilization degree of non-main reservoirs,the fine analysis of the oilfield is carried out using new drilling core data and water flooded data under the guidance of delta facies reservoir configuration theory,the spatial contact relationships among configuration elements are determined,and a quantitative classification method of injection production connectivity based on configuration characterization is proposed. The research result shows that,the non-main reservoirs in SZ oilfield are mainly delta front dam margin microfacies,and the injection-production contact relationship of planar configuration unit and the interlayer facies interference are the main factors of remaining oil. According to the distribution types of remaining oil in non-main oil reservoirs,some offshore characteristic potential tapping technologies such as " developing by horizontal wells and increasing the density of production wells along injection-production mainstream lines" can effectively improve the development effect of the non-main oil reservoirs,and provide a new way for the stable production and yield increase of old oilfields.
引文
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[2]马平华,邵先杰,霍春亮,等.绥中36-1油田东二下段沉积演化及对油气的控制作用[J].特种油气藏,2010,17(3):45-47.MA Pinghua,SHAO Xianjie,HUO Chunliang,et al.Sedimentary evolution and its control action on hydrocarbon in lower Ed2formation in SZ36-1 oilfield of Bohai Sea[J].Special Oil&Gas Reservoirs,2010,17(3):45-47.
[3]刘宗宾,张汶,马奎前,等.海上稠油油田剩余油分布规律及水平井挖潜研究[J].石油天然气学报,2013,35(5):116-117.LIU Zongbin,ZHANG Wen,MA Kuiqian,et al.Remaining oil distribution rule and horizontal well potential tapping of heavy oilfield on offshore[J].Journal of Oil and Gas,2013,35(5):116-117.
[4]李云海,吴胜和,李艳平,等.三角洲前缘河口坝储层构型界面层次表征[J].石油天然气学报,2007,29(6):49-52.LI Yunhai,WU Shenghe,LI Yanping,et al.The interfacial characterization of the reservoir architecture of the mouth bar in the delta front mouth bar[J].Journal of Petroleum and Natural Gas,2007,29(6):49-52.
[5]齐陆宁,杨少春,林博.河流相储层构型要素组合对剩余油分布影响[J].新疆地质,2010,28(1):70-71.QI Luning,YANG Shaochun,LIN Bo.The influence of the composition of the fluvial facies reservoir on the remaining oil distribution[J].Xinjiang Geology,2010,28(1):70-71.
[6]姜建伟,肖梦华,王继鹏,等.泌阳凹陷双河油田扇三角洲前缘构型精细解剖[J].断块油气田,2016,23(5):560-568.JIANG Jianwei,XIAO Menghua,WANG Jipeng,et al.Detailed reservoir architecture of fan-delta front in Shuanghe Oilfield,Biyang Depression[J].Fault Block Oil and Gas Field,2016,23(5):560-568.
[7]渠芳,陈清华,连承波.河流相储层构型及其对油水分布的控制[J].中国石油大学学报(自然科学版),2008,32(3):15.QU Fang,CHEN Qinghua,LIAN Chengbo.Reservoir configuration of fluvial facies and the control on oil water distribution[J].Journal of China University of Petroleum(Natural Science Edition),2008,32(3):15.
[8]宁士华,肖斐,束宁凯.特高含水开发期曲流河储层构型深化研究及应用[J].断块油气田,2013,20(3):354-358.NING Shihua,XIAO Fei,SHU Ningkai.Deepening research and application of meandering river reservoir configuration at extra-high water cut development period[J].Fault Block Oil and Gas Field,2013,20(3):354-358.
[9]徐丽强,李胜利,于兴河,等.辫状河三角洲前缘储层构型分析[J].油气地质与采收率,2016,23(5):50-56.XU Liqiang,LI Shengli,YU Xinghe,et al.Analysis of reservoir architecture in the braided river delta front[J].Petroleum Geology and Recovery Efficiency,2016,23(5):50-56.
[10]张友,侯加根,曹彦清,等.基于构型单元的储层质量分布模式:以胜坨油田二区沙二段8砂组厚层河口坝砂体为例[J].石油与天然气地质,2015,36(5):862-871.ZHANG You,HOU Jiagen,CAO Yanqin,et al.Distribution patterns of reservoir quality based on configuration unit of mouth bar sandbody:a case study from the 8thsand group of the 2ndmember of the Shahejie Formation in Shenger Block of Shengtuo oilfield,East China[J].Oli&Gas Geology,2015,36(5):862-871.
[11]箭晓卫,赵伟.喇嘛甸油田特高含水期厚油层内剩余油描述及挖潜技术[J].大庆石油地质与开发,2006,25(5):31-32.JIAN Xiaowei,ZHAO Wei.The residual oil description and potential tapping technique in the thick oil reservoir in Lamadian Oilfield at high water cut stage[J].Petroleum Geology&Oilfield Development in Daqing,2006,25(5):31-32.
[12]徐安娜,穆龙新,裘怿楠.中国不同沉积类型储集层中的储量和可动剩余油分布规律[J].石油勘探与开发,1998,25(5):41-44.
[13]何贤科,涂齐催,宋春华.海上特高含水油田剩余油分布规律研究[J].石油天然气学报,2013,35(10):1-5.HE Xianke,TU Qicui,SONG Chunhua.Remaining oil distribution rules in extra-high water-cut off shore oilfields[J].Journal of Oil and Gas Technology,2013,35(10):1-5.
[14]邹信波,罗东红,许庆华,等.海上特高含水老油田挖潜策略与措施[J].中国海上油气,2012,24(6):30-31.ZOU Xinbo,LUO Donghong,XU Qinghua,et al.The strategies and measures of tapping the potential about maritime special mature oilfields with high water cut[J].China Offshore Oil and Gas,2012,24(6):30-31.
[15]卢虎胜,林承焰,程奇.东营凹陷永安镇油田沙二段三角洲相储层构型及剩余油分布[J].东北石油大学学报,2013,37(3):40-46.LU Husheng,LIN Chengyan,CHENG Qi.Deltatic reservoir architecture and remaining oil distruibution study of Es2member in Yonganzhen Oilfield,Dongying Sag[J].Journal of Northeast Petroleum University,2013,37(3):40-46.