胜利断块油藏分类探讨及提高采收率对策
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摘要
断块油藏在胜利油区占有重要的地位,目前普遍进入高含水开发期。在缺乏新增储量补充的情况下,如何大幅度提高老区采收率是胜利断块油藏开发的主要问题。针对断块多、矛盾复杂的现状,在继承以往断块分类基础上,结合开发矛盾对断块油藏重新分为4大类7小类并进行认识,首次提出了屋脊断块油藏人工边水驱技术、极复杂断块油藏立体组合开发技术和复杂断块油藏均衡水驱开发技术等提高采收率对策。各项技术对策在胜利油区典型断块试验区的实践和推广取得了明显的效果,人工边水驱在东辛油田辛1沙-4块提高采收率7.5%;立体组合开发技术使永安油田永3-1复杂断块提高采出程度7.6%;均衡水驱开发技术在永3复杂断块沙二7-9区提高采收率4.1%。实现断块油藏在高含水期持续高效开发。
There are many fault blocks in Shengli oil area and complex development contradictions. On the basis of the previous classification of fault blocks,the fault block reservoirs in Shengli oil area are redivided into 4 main categories and 7 subtypes according to the development contradictions. According to the outstanding development contradiction of various types of oil reservoirs,the countermeasures for enhanced oil recovery are put forward,such as the artificial edge water flooding development for fastigium fault block reservoirs,the three-dimensional combination development for extremely complex fault block reservoirs and the balanced water flooding development for complex fault block reservoirs. The implementation of the countermeasures in the typical fault blocks of Shengli oil area achieved a significant effect: the artificial edge water flooding in Xin 1 sha-4 fault block of Dongxin oilfield enhanced oil recovery by7. 5%; the three-dimensional combination development in Yong3-1 extremely complex fault block reservoir of Yongan oilfield enhanced oil recovery by 7. 6%; the balanced water flooding development in Shaer 7-9 area of Yong3 complex fault block enhanced oil recovery by4. 1%. The implementation of these technical countermeasures will achieve continuous and efficient development of fault block reservoirs in high water cut stage.
There are many fault blocks in Shengli oil area and complex development contradictions. On the basis of the previous classification of fault blocks,the fault block reservoirs in Shengli oil area are redivided into 4 main categories and 7 subtypes according to the development contradictions. According to the outstanding development contradiction of various types of oil reservoirs,the countermeasures for enhanced oil recovery are put forward,such as the artificial edge water flooding development for fastigium fault block reservoirs,the three-dimensional combination development for extremely complex fault block reservoirs and the balanced water flooding development for complex fault block reservoirs. The implementation of the countermeasures in the typical fault blocks of Shengli oil area achieved a significant effect: the artificial edge water flooding in Xin 1 sha-4 fault block of Dongxin oilfield enhanced oil recovery by7. 5%; the three-dimensional combination development in Yong3-1 extremely complex fault block reservoir of Yongan oilfield enhanced oil recovery by 7. 6%; the balanced water flooding development in Shaer 7-9 area of Yong3 complex fault block enhanced oil recovery by4. 1%. The implementation of these technical countermeasures will achieve continuous and efficient development of fault block reservoirs in high water cut stage.
引文
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[13]崔传智,姜华,段杰宏,等.基于层间均衡驱替的分层注水井层间合理配注方法[J].油气地质与采收率,2012,19(5):94-96.CUI Chuanzhi,JIANG Hua,DUAN Jiehong,et al.Reasonable injection rate allocation method of separate-layer water injection wells based on interlayer equilibrium displacement[J].Petroleum Geology&Recovery Efficiency,2012,19(5):94-96.
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[2]刘睿,姜汉桥,陈民峰,等.江苏油田复杂小断块油藏分类[J].新疆石油地质,2009,30(6):680-682.LIU Rui,JIANG Hanqiao,CHEN Minfeng,et al.Classification of complex minor fault block reservoirs in Jiangsu Oil Field[J].Xinjiang Petroleum Geology,2009,30(6):680-682.
[3]李志鹏,林承焰,史全党,等.高浅南区边水断块油藏类型及剩余油特征[J].西南石油大学学报(自然科学版),2012,34(1):115-120.LI Zhipeng,LIN Chengyan,SHI Quandang,et al.Types of edge-water fault block reservoirs and features of residual oil in the Gaoqiannan area[J].Journal of Southwest Petroleum University(Science&Technology Edition),2012,34(1):115-120.
[4]周海菲.复杂断块油藏区块分类优选方法[J].大庆石油地质与开发,2016,35(4):68-73.ZHOU Haifei.Classifying and optimizing method for theblocks in the complex faulted-block oil reservoirs[J].Petroleum Geology&Oilfield Development in Daqing,2016,35(4):68-73.
[5]王平,李纪辅,李幼琼.复杂断块油田详探与开发[M].北京:石油工业出版社,1994.
[6]侯春华,肖武,周香翠,等.胜利油区油藏分类研究[J].油气地质与采收率,2005,12(2):42-44.HOU Chunhua,XIAO Wu,ZHOU Xiangcui,et al.Research on oil reservoir classification in Shengli petroliferous province[J].Petroleum Geology&Recovery Efficiency,2015,12(2):42-44.
[7]王端平,杨勇,牛栓文,等.东辛复杂断块油藏层块分类评价方法与调整对策[J].油气地质与采收率,2012,19(5):84-87.WANG Duanping,YANG Yong,NIU Shuanwen,et al.Layer block classification evalution and adjustment of complicated fault block oil reservoir[J].Petroleum Geology&Recovery Efficiency,2012,19(5):84-87.
[8]王建.胜利断块油藏人工边水驱提高采收率技术研究[J].科学技术与工程,2012,20(15):3598-3601.WANG Jian.Research on technology of enhance water drive recovery by simulating strong edge-wate to develop fault-block oil reservoirs[J].Science Technology&Engineering,2012,20(15):3598-3601.
[9]王端平,杨勇,许坚,等.复杂断块油藏立体开发技术[J].油气地质与采收率,2011,18(5):54-57.WANG Duanping,YANG Yong,XU Jian,et al.Three-dimensinal develoment techniques in complicated faultblock reservoir[J].Petroleum Geology&Recovery Efficiency,2011,18(5):54-57.
[10]王书宝,牛栓文.东辛油田多油层复杂断块油藏高含水后期细分层系研究[J].石油勘探与开发,2004,31(3):116-118.WANG Shubao,NIU Shuanwen.Layer subdivision in the late high water cut stage in the complex fault block reservoirs,Dongxin Oilfield[J].Petroleum Exploration&Development,2004,31(3):116-118.
[11]武刚.胜利油田断块油藏小层组合技术界限的改进[J].科学技术与工程,2012,20(32):8675-8678.WU Gang.Improvement on the technology limits of layer combination in fault block reservoir of Shengli Oilfield[J].Science Technology&Engineering,2012,20(32):8675-8678.
[12]王端平,杨勇,梁承春,等.复杂断块油藏三级细分技术的研究与应用:以永安镇油田永3-1断块沙二段7-9层系为例[J].油气地质与采收率,2011,18(2):62-64.WANG Duanping,YANG Yong,LIANG Chengchun,et al.Research and application of three-class subdivision technique on complex fault block reservoirs:a case study of Es_2 7-9 layer series of Yong 3-1 fault block in Yonganzhen oilfield[J].Petroleum Geology&Recovery Efficiency,2011,18(2):62-64.
[13]崔传智,姜华,段杰宏,等.基于层间均衡驱替的分层注水井层间合理配注方法[J].油气地质与采收率,2012,19(5):94-96.CUI Chuanzhi,JIANG Hua,DUAN Jiehong,et al.Reasonable injection rate allocation method of separate-layer water injection wells based on interlayer equilibrium displacement[J].Petroleum Geology&Recovery Efficiency,2012,19(5):94-96.
[14]冯其红,王相,王端平,等.水驱油藏均衡驱替开发效果论证[J].油气地质与采收率,2016,23(3):83-88.FENG Qihong,WANG Xiang,WANG Duanping,et al.Theoretical analysis on the performance of equilibrium displacement in water flooding reservoir[J].Petroleum Geology&Recovery Efficiency,2016,23(3):83-88.