渤海SZ油田剩余油控制因素及挖潜策略研究
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摘要
渤海SZ油田经首次加密调整后开发效果大幅提高,但随着油田逐渐进入高含水阶段,剩余油分布日趋复杂,进一步调整和挖潜的难度增大,需要探索新的技术手段和开发策略以实现油田的可持续开发。针对此现状,在三角洲相储层构型理论的指导下,综合利用岩芯、地震、测井等资料,详细刻画了单一成因砂体在垂向及平面的接触关系,并在此基础上分析了储层构型对油水运动的控制作用。结果表明,油田进入高含水期后,层间相带干扰、层内夹层及平面构型单元接触关系是控制剩余油分布的主要因素。为了进一步提高油田开发效果,提出了基于构型单元的层间水平井挖潜策略、基于构型单元的层内水平井挖潜策略、基于构型单元的平面小井距加密策略等,构建了一套海上三角洲相油田综合调整后的剩余油挖潜技术方法,并取得了良好的应用效果。
The recovery efficiency of SZ Oilfield in the Bohai Sea has greatly improved since the first infilling adjustment. However,with the oilfield transitioning to the high-water-content stage,the distribution of the remaining oil has become increasingly complicated and it has become more difficult to make further adjustments and realize the untapped potential; sustainable development of the oilfield necessitates new technical means and exploitation strategies. To cope with these challenges, a detailed description of the vertical and in-plane contact relationship of homogeneous sand bodies was carried out on the basis of the delta facies reservoir architecture theory, by comprehensively utilizing coring, seismic, and logging data. With this approach,the role of reservoir architecture in controlling the movement of oil and water was analyzed. The results showed that during the high-water-content stage, inter-stratum and inter-zone interference, intercalated beds, and joints between plane-architecture units were critical to controlling the remaining oil. To further improve the oil field development efficiency, three architecture unit-based strategies are proposed for tapping the potential of inter-stratum and intra-stratum horizontal wells and infilling densely spaced horizontal wells. A set of technologies was developed for tapping the potential of the delta facies oil reserves remaining after a comprehensive adjustment is made to the oilfield. The strategies and technologies were then applied, achieving good results.
The recovery efficiency of SZ Oilfield in the Bohai Sea has greatly improved since the first infilling adjustment. However,with the oilfield transitioning to the high-water-content stage,the distribution of the remaining oil has become increasingly complicated and it has become more difficult to make further adjustments and realize the untapped potential; sustainable development of the oilfield necessitates new technical means and exploitation strategies. To cope with these challenges, a detailed description of the vertical and in-plane contact relationship of homogeneous sand bodies was carried out on the basis of the delta facies reservoir architecture theory, by comprehensively utilizing coring, seismic, and logging data. With this approach,the role of reservoir architecture in controlling the movement of oil and water was analyzed. The results showed that during the high-water-content stage, inter-stratum and inter-zone interference, intercalated beds, and joints between plane-architecture units were critical to controlling the remaining oil. To further improve the oil field development efficiency, three architecture unit-based strategies are proposed for tapping the potential of inter-stratum and intra-stratum horizontal wells and infilling densely spaced horizontal wells. A set of technologies was developed for tapping the potential of the delta facies oil reserves remaining after a comprehensive adjustment is made to the oilfield. The strategies and technologies were then applied, achieving good results.
引文
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[10]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. doi:10.6056/dkyqt201303020NING 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. doi:10.6056/dkyqt201303020
[11]韩大匡.关于高含水油田二次开发理念、对策和技术路线的探讨[J].石油勘探与开发,2010, 37(5):583-591.doi:10.3969/j.issn. 1674-5167.2014.21.164HAN Dakuang. Discussions on concepts, countermeasures and technical routes for the redevelopment of high water-cut oilfields[J]. Petroleum Exploration and Development, 2010, 37(5):583-591. doi:10.3969/j.issn.1674-5167.2014.21.164
[12]张春生,刘忠保,施冬,等.三角洲分流河道及河口坝形成过程的物理模拟[J].地学前缘,2000,7(3):168-176.doi:10.3321/j.issn:1005-2321.2000.03.017ZHANG Chunsheng, LIU Zhongbao, SHI Dong, et al.Physical simulation of formation process in distributary channels and debouch bars in delta[J]. Geoscience Frontiers, 2000, 7(3):168-176. doi:10.3321/j.issn:1005-2321.2000.03.017
[13]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——以渤海XX油田为例[J].石油天然气学报,2013,35(5):116-117.doi:10.3969/-j.issn.1000-9752.2013.05.024LIU Zongbin, ZHANG Wen, MA Kuiqian, et al. Research on residual oil distribution law and tapping the potential in horizontal wells in offshore heavy oilfield:By taking XX Oilfield in Bohai Basin for example[J]. Journal of Oil and Gas Technology, 2013,35(5):116-117.doi:10.3969/-j.issn.1000-9752.2013.05.024
[14]严科.三角洲前缘储层特高含水后期剩余油分布特征[J].特种油气藏,2014, 21(5):20-23. doi:10.3969/-j.issn. 1006-6535.2014.05.005YAN Ke. Residual oil distribution features in delta front reservoir during late period of super-high water content[J].Special Oil and Gas Reservoirs, 2014, 21(5):20-23. doi:10.3969/j.issn.1006-6535.2014.05.005
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[16]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):69-72. doi:10.3969/j.issn. 1000-8845.2010.01.012QI Luning, YANG Shaochun, LIN Bo. Architecturalelement combination in fluvial facies reservoir effects on remaining oil distribution[J]. Xinjiang Geology, 2010,28(1):69-72. doi:10.3969/j.issn. 1000-8845.2010.01.012
[17]沈黎阳,毛立华,王坤,等.中渗油藏相控剩余油分布特征研究及应用[J].断块油气田,2017, 24(1):31-34.doi:10.6056/dkyqt201701007SHEN Liyang, MAO Lihua, WANG Kun, et al. Distribution of remaining oil controlled by facies in medium permeability reservoir and application[J]. Fault Block Oil and Gas Field, 2017, 24(1):31-34. doi:10.6056/-dkyqt201701007
[18]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——以珠江口盆地陆丰凹陷LFD13-1油田为例[J].中国海上油气(地质),2012, 24(6):28-33.ZOU Xinbo, LUO Donghong, XU Qinghua, et al. Some strategical measures to tap the potential in offshore mature oilfields with extra-high water cut:A case of LFD13-1field in Lufeng Depression, Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology), 2012, 24(6):28-33.
[19]张铁帝.有效动用非主力层改善油田开发效果[J].特种油气藏,2015, 22(2):119-122. doi:10.3969/j.issn.-1006-6535.2015.02.030ZHANG Tiedi. Research on improvement of oilfield development by effectively stimulating hon-payzones[J].Special Oil and Gas Reservoirs, 2015,22(2):119-122. doi:10.3969/j.issn. 1006-6535.2015.02.030
[20]赵靖康,高红立,邱婷.利用水平井挖潜底部强水淹的厚油层剩余油[J].断块油气田,2011.18(6):776-779.ZHAO Jingkang, GAO Hongli, QIU Ting. Application of horizontal well in potential tapping of remaining oil at bottom of thick reservoir with strong waterflooding[J]. Fault Block Oil and Gas Field, 2011, 18(6):776-779.
[21]曾祥平.储集层构型研究在油田精细开发中的应用[J].石油勘探与开发,2010, 37(4):483-488.ZENG Xiangping. Application of reservoir structure research in the fine development of oilfields[J]. Petroleum Exploration and Development, 2010, 37(4):483-488.
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[2]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. doi:10.6056/dkyqt201605004JIANG 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. doi:10.6056/dkyqt-201605004
[3]吴胜和,纪友亮,岳大力,等.碎屑沉积地质体构型分级方案探讨[J].高校地质学报,2013, 19(1):12-22.doi:10.3969/j.issn.1006-7493.2013.01.004WU Shenghe, JI Youliang, YUE Dali, et al. Discussion on hierarchical scheme of architectural units in clastic deposits[J]. Geological Journal of China Universities, 2013,19(1):12-22. doi:10.3969/j.issn.1006-7493.2013.01.004
[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. doi:10.3969/j.issn. 1000-9752.2007.06.011LI Yunhai, WU Shenghe, LI Yanping, et al. Hierarchical boundary characterization of delta front mouth bar reservoir architecture[J]. Journal of Oil and Gas Technology,2007, 29(6):49-52. doi:10.3969/j.issn. 1000-9752.2007.-06.011
[5]徐丽强,李胜利,于兴河,等.辫状河三角洲前缘储层构型分析——以彩南油田彩9井区三工河组为例[J].油气地质与采收率,2016,23(5):50-56. doi:10.3969/-j.issn. 1009-9603.2016.05.008XU Liqiang, LI Shengli, YU Xinghe, et al. Analysis of reservoir architecture in the braided river delta front:A case study of the Sangonghe Formation in Block Cai 9of Cainan Oilfield[J]. Petroleum Geology and Recovery Efficiency, 2016, 23(5):50-56. doi:10.3969/j.issn.1009-9603.2016.05.008
[6]温立峰,吴胜和,王延忠,等.河控三角洲河口坝地下储层构型精细解剖方法[J].中南大学学报(自然科学版),2011,42(4):1072-1078.WEN Lifeng, WU Shenghe, WANG Yanzhong, et al. An accurate method for anatomizing architecture of subsurface reservoir in mouth bar of fluvial dominated delta[J].Journal of Central South University(Science and Technology), 2011,42(4):1072-1078.
[7]吴胜和,翟瑞,李羽鹏.地下储层构型表征:现状与展望[J].地学前缘,2012, 19(2):15-21.WU Shenghe, ZHAI Rui, LI Yupeng. Subsurface reservoir architecture characterization:Current status and prospects[J]. Earth Science Frontiers, 2012,19(2):15-21.
[8]何文祥,吴胜和,唐义疆,等.河口坝砂体构型精细解剖[J].石油勘探与开发,2005, 32(5):42-46. doi:10.-3321/j.issn:1000-0747.2005.05.009HE Wenxiang, WU Shenghe, TANG Yijiang, et al. Detailed architecture analyses of debouch bar in Shengtuo Oilfield[J]. Petroleum Exploration and Development,2005, 32(5):42-46. doi:10.3321/j.issn:1000-0747.2005.-05.009
[9]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):14-18. doi:10.3321/j.issn:1673-5005.2008.03.-003QU Fang, CHEN Qinghua, LIAN Chengbo. Fluvial facies reservoir architecture and its control over the distribution of oil and water[J]. Journal of China University of Petroleum(Natural Science Edition), 2008, 32(3):14-18. doi:10.3321/j.issn:1673-5005.2008.03.003
[10]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. doi:10.6056/dkyqt201303020NING 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. doi:10.6056/dkyqt201303020
[11]韩大匡.关于高含水油田二次开发理念、对策和技术路线的探讨[J].石油勘探与开发,2010, 37(5):583-591.doi:10.3969/j.issn. 1674-5167.2014.21.164HAN Dakuang. Discussions on concepts, countermeasures and technical routes for the redevelopment of high water-cut oilfields[J]. Petroleum Exploration and Development, 2010, 37(5):583-591. doi:10.3969/j.issn.1674-5167.2014.21.164
[12]张春生,刘忠保,施冬,等.三角洲分流河道及河口坝形成过程的物理模拟[J].地学前缘,2000,7(3):168-176.doi:10.3321/j.issn:1005-2321.2000.03.017ZHANG Chunsheng, LIU Zhongbao, SHI Dong, et al.Physical simulation of formation process in distributary channels and debouch bars in delta[J]. Geoscience Frontiers, 2000, 7(3):168-176. doi:10.3321/j.issn:1005-2321.2000.03.017
[13]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——以渤海XX油田为例[J].石油天然气学报,2013,35(5):116-117.doi:10.3969/-j.issn.1000-9752.2013.05.024LIU Zongbin, ZHANG Wen, MA Kuiqian, et al. Research on residual oil distribution law and tapping the potential in horizontal wells in offshore heavy oilfield:By taking XX Oilfield in Bohai Basin for example[J]. Journal of Oil and Gas Technology, 2013,35(5):116-117.doi:10.3969/-j.issn.1000-9752.2013.05.024
[14]严科.三角洲前缘储层特高含水后期剩余油分布特征[J].特种油气藏,2014, 21(5):20-23. doi:10.3969/-j.issn. 1006-6535.2014.05.005YAN Ke. Residual oil distribution features in delta front reservoir during late period of super-high water content[J].Special Oil and Gas Reservoirs, 2014, 21(5):20-23. doi:10.3969/j.issn.1006-6535.2014.05.005
[15]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. doi:10.3969/j.issn.1000-3754.2006.05.-010JIAN Xiaowei, ZHAO Wei. Remaining oil description and potential tapping technique of the thick oil zone in Lamadian Oilfield in high water cut stage[J]. Petroleum Geology&Oilfield Development in Daqing, 2006, 25(5):31-32. doi:10.3969/j.issn.1000-3754.2006.05.010
[16]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):69-72. doi:10.3969/j.issn. 1000-8845.2010.01.012QI Luning, YANG Shaochun, LIN Bo. Architecturalelement combination in fluvial facies reservoir effects on remaining oil distribution[J]. Xinjiang Geology, 2010,28(1):69-72. doi:10.3969/j.issn. 1000-8845.2010.01.012
[17]沈黎阳,毛立华,王坤,等.中渗油藏相控剩余油分布特征研究及应用[J].断块油气田,2017, 24(1):31-34.doi:10.6056/dkyqt201701007SHEN Liyang, MAO Lihua, WANG Kun, et al. Distribution of remaining oil controlled by facies in medium permeability reservoir and application[J]. Fault Block Oil and Gas Field, 2017, 24(1):31-34. doi:10.6056/-dkyqt201701007
[18]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——以珠江口盆地陆丰凹陷LFD13-1油田为例[J].中国海上油气(地质),2012, 24(6):28-33.ZOU Xinbo, LUO Donghong, XU Qinghua, et al. Some strategical measures to tap the potential in offshore mature oilfields with extra-high water cut:A case of LFD13-1field in Lufeng Depression, Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology), 2012, 24(6):28-33.
[19]张铁帝.有效动用非主力层改善油田开发效果[J].特种油气藏,2015, 22(2):119-122. doi:10.3969/j.issn.-1006-6535.2015.02.030ZHANG Tiedi. Research on improvement of oilfield development by effectively stimulating hon-payzones[J].Special Oil and Gas Reservoirs, 2015,22(2):119-122. doi:10.3969/j.issn. 1006-6535.2015.02.030
[20]赵靖康,高红立,邱婷.利用水平井挖潜底部强水淹的厚油层剩余油[J].断块油气田,2011.18(6):776-779.ZHAO Jingkang, GAO Hongli, QIU Ting. Application of horizontal well in potential tapping of remaining oil at bottom of thick reservoir with strong waterflooding[J]. Fault Block Oil and Gas Field, 2011, 18(6):776-779.
[21]曾祥平.储集层构型研究在油田精细开发中的应用[J].石油勘探与开发,2010, 37(4):483-488.ZENG Xiangping. Application of reservoir structure research in the fine development of oilfields[J]. Petroleum Exploration and Development, 2010, 37(4):483-488.
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