缝洞型油藏强边、底水窜进油井特征及机理研究
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摘要
塔河油田碳酸盐岩缝洞型油藏部分高产油井具有油井不见水则稳产,一旦见水则暴性水淹、产量呈快速递减的典型特征,且高产井的水淹对区块稳产的影响重大。针对这一现象,通过水淹高产井生产动态的分析找出了水淹前的异常信号,并利用井筒节点分析方法和流体力学软件开展了强边、底水窜进机理研究,论证了水淹前异常信号的正确性。研究得出:强边、底水缝洞单元能量接替可分为纯弹性驱,弹性驱向水驱过渡,纯边、底水驱3个明显阶段;自喷井的油压和产量异常波动特征是强边、底水突破井底附近的重要信号;在此基础上,提出了高产井见水风险预警分阶段控制方法,并在矿场取得较好的运用效果。通过高产井水淹前异常信号的分析,为油田高产井管理和油井实施见水风险预警提供了依据。
The carbonate fractured-vuggy reservoir in part of the high productivity wells of Tahe Oilfield have the typical characteristic:when the water cut is zero,oil production remains stable. Once the water cut is not zero,it will rise dramatically,and oil production will drop fast. Therefore,the water cut of high production wells will influence the oilfield's production. By analyzing the production performance of the high production wells with water cut,we found out the signal of water flooding.And by using the well node analysis method and the fluid mechanics software,we launched a strong edge,bottom water coning mechanism research and demonstrated the signal before the water flooding. The research comes to the conclusion that the energy replacement of strong edge or bottom water in fracture cave unit can be divided into three obvious stages:pure elastic drive transaction of the elastic displacement to water flooding,pure edge bottom water drive. The oil pressure and the production fluctuation was the important signals of strong edge bottom water flooding and can accurately predict the bottom-water coning stage. On this basis,we suggested water flood risk warning and control method at the three stages. The analysis of the signals of high production wells before water flood can be the basis of high production well management and water flood risk warning.
The carbonate fractured-vuggy reservoir in part of the high productivity wells of Tahe Oilfield have the typical characteristic:when the water cut is zero,oil production remains stable. Once the water cut is not zero,it will rise dramatically,and oil production will drop fast. Therefore,the water cut of high production wells will influence the oilfield's production. By analyzing the production performance of the high production wells with water cut,we found out the signal of water flooding.And by using the well node analysis method and the fluid mechanics software,we launched a strong edge,bottom water coning mechanism research and demonstrated the signal before the water flooding. The research comes to the conclusion that the energy replacement of strong edge or bottom water in fracture cave unit can be divided into three obvious stages:pure elastic drive transaction of the elastic displacement to water flooding,pure edge bottom water drive. The oil pressure and the production fluctuation was the important signals of strong edge bottom water flooding and can accurately predict the bottom-water coning stage. On this basis,we suggested water flood risk warning and control method at the three stages. The analysis of the signals of high production wells before water flood can be the basis of high production well management and water flood risk warning.
引文
[1]漆立新,云露.塔河油田奥陶系碳酸盐岩岩溶发育特征与主控因素[J].石油与天然气地质,2010,31(1):1–12.Qi Lixin,Yun Lu.Development characteristics and main controlling factors of the Ordovician carbonate karst in Tahe Oilfield[J].Oil&Gas Geology,2010,31(1):1–12.
[2]鲁新便.岩溶缝洞型碳酸盐岩储集层的非均质性[J].新疆石油地质,2003,24(4):360–362.Lu Xinbian.Heterogeneity of karst-vuggy carbonate reservoir rocks[J].Xinjiang Petroleum Geology,2003,24(4):360–362.
[3]鲁新便,蔡忠贤.缝洞型碳酸盐岩油藏古岩溶系统与油气开发以塔河碳酸盐岩溶洞型油藏为例[J].石油与天然气地质,2010,31(1):22–27.Lu Xinbian,Cai Zhongxian.A study of the paleo-cavern system in fractured-vuggy carbonate reservoirs and oil/gas development:Taking the reservoirs in Tahe Oilfield as an example[J].Oil&Gas Geology,2010,31(1):22–27.
[4]陈方方,段新国,袁玉春,等.塔里木油田缝洞型碳酸盐岩油藏开发特征[J].成都理工大学学报:自然科学版,2012,39(6):606–610.Chen Fangfang,Duan Xinguo,Yuan Yuchun,et al.Characteristics of exploration and development of fracturedvuggy carbonate rock oil pool in Tarim Oilfield of China[J].Journal of Chengdu University of Technology:Science&Technology Edition,2012,39(6):606–610.
[5]李峰,鲁新便.塔河油田奥陶系油藏碳酸盐岩油藏缝洞单元划分及分类评价[C]//焦方正.塔河油气田开发研究文集.北京:石油工业出版社,2006,234–243.
[6]朱中谦,程林松.砂岩油藏高含水期底水锥进的几个动态问题[J].新疆石油地质,2001,22(3):235–237.Zhu Zhongqian,Cheng Linsong.Some dynamic problems on bottom water coning during high water cut stage in sandstone bottom-water reservoir[J].Xinjiang Petroleum Geology,2001,22(3):235–237.
[7]李柏林,涂兴万,李传亮.塔河缝洞型碳酸盐岩底水油藏产量递减特征研究[J].岩性油气藏,2008,20(3):132–134.Li Bolin,Tu Xingwan,Li Chuanliang.Study on the production rate decline of fractured and cavernous carbonatereservoir in Tahe Oilfield[J].Lithologic Reservoirs,2008,20(3):132–134.
[8]吕爱民,姚军.缝洞型底水油藏含水率变化规律研究[J].新疆石油地质,2007,28(3):344–347.LüAimin,Yao Jun.The variation of water cut in fracturedvuggy reservoir with bottom water[J].Xinjiang Petroleum Geology,2007,28(3):344–347.
[9]刘学利,彭小龙,杜志敏,等.油水两相流Darcy-Stokes模型[J].西南石油大学学报,2007,29(6):89–92.Liu Xueli,Peng Xiaolong,Du Zhimin,et al.Oil water two phases flow Darcy-Strokes mode[J].Journal of Southwest Petroleum Universtiy,2007,29(6):89–92.
[10]彭小龙,杜志敏,刘学利,等.大尺度溶洞裂缝型油藏试井新模型[J].西南石油大学学报:自然科学版,2008,30(2):74–77.Peng Xiaolong,Du Zhimin,Liu Xueli,et al.A new well test model for the big size cavity-fracture reservoirs[J].Journal of Southwest Petroleum University:Science&Technology Edition,2008,30(2):74–77.
[11]彭小龙,刘学利,杜志敏.缝洞双重介质数值模型及渗流特征研究[J].西南石油大学学报:自然科学版,2009,31(1):61–64.Peng Xiaolong,Liu Xueli,Du Zhimin.Numerical model and the characteristics of flowing through porous media of fracture and vug dual-media[J].Journal of Southwest Petroleum University:Science&Technology Edition,2009,31(1):61–64.
[12]Liu Xueli,Yang Jian,Li Zongyu,et a1.A new methodology on reservoir modeling in the fracture-cavity carbonate rock of Tahe Oilfield[C].SPE 104429,2006.
[13]Peng Xiaolong,Du Zhimin,Liang Baosheng,et al.Darcy-stokes streamline simulation for the tahe-fractured reservoir with cavities[C].SPE 107314,2009.
[14]杨磊,李宗宇.新疆塔河油田1区低含水期稳油控水效果分析[J].成都理工大学学报:自然科学版,2003,30(4):368–373.Yang Lei,Li Zongyu.The effect analysis of coning water at the low-water-cut period in Tahe Oilfield of Xinjiang[J].Journal of Chengdu University of Technology:Science&Technology Edition,2003,30(4):368–373.
[15]罗娟.塔河油田缝洞型油藏高产井见水预警评价技术[C]//特殊类油藏开发技术文集.王元基.北京:石油工业出版社,2012,426–434.
[2]鲁新便.岩溶缝洞型碳酸盐岩储集层的非均质性[J].新疆石油地质,2003,24(4):360–362.Lu Xinbian.Heterogeneity of karst-vuggy carbonate reservoir rocks[J].Xinjiang Petroleum Geology,2003,24(4):360–362.
[3]鲁新便,蔡忠贤.缝洞型碳酸盐岩油藏古岩溶系统与油气开发以塔河碳酸盐岩溶洞型油藏为例[J].石油与天然气地质,2010,31(1):22–27.Lu Xinbian,Cai Zhongxian.A study of the paleo-cavern system in fractured-vuggy carbonate reservoirs and oil/gas development:Taking the reservoirs in Tahe Oilfield as an example[J].Oil&Gas Geology,2010,31(1):22–27.
[4]陈方方,段新国,袁玉春,等.塔里木油田缝洞型碳酸盐岩油藏开发特征[J].成都理工大学学报:自然科学版,2012,39(6):606–610.Chen Fangfang,Duan Xinguo,Yuan Yuchun,et al.Characteristics of exploration and development of fracturedvuggy carbonate rock oil pool in Tarim Oilfield of China[J].Journal of Chengdu University of Technology:Science&Technology Edition,2012,39(6):606–610.
[5]李峰,鲁新便.塔河油田奥陶系油藏碳酸盐岩油藏缝洞单元划分及分类评价[C]//焦方正.塔河油气田开发研究文集.北京:石油工业出版社,2006,234–243.
[6]朱中谦,程林松.砂岩油藏高含水期底水锥进的几个动态问题[J].新疆石油地质,2001,22(3):235–237.Zhu Zhongqian,Cheng Linsong.Some dynamic problems on bottom water coning during high water cut stage in sandstone bottom-water reservoir[J].Xinjiang Petroleum Geology,2001,22(3):235–237.
[7]李柏林,涂兴万,李传亮.塔河缝洞型碳酸盐岩底水油藏产量递减特征研究[J].岩性油气藏,2008,20(3):132–134.Li Bolin,Tu Xingwan,Li Chuanliang.Study on the production rate decline of fractured and cavernous carbonatereservoir in Tahe Oilfield[J].Lithologic Reservoirs,2008,20(3):132–134.
[8]吕爱民,姚军.缝洞型底水油藏含水率变化规律研究[J].新疆石油地质,2007,28(3):344–347.LüAimin,Yao Jun.The variation of water cut in fracturedvuggy reservoir with bottom water[J].Xinjiang Petroleum Geology,2007,28(3):344–347.
[9]刘学利,彭小龙,杜志敏,等.油水两相流Darcy-Stokes模型[J].西南石油大学学报,2007,29(6):89–92.Liu Xueli,Peng Xiaolong,Du Zhimin,et al.Oil water two phases flow Darcy-Strokes mode[J].Journal of Southwest Petroleum Universtiy,2007,29(6):89–92.
[10]彭小龙,杜志敏,刘学利,等.大尺度溶洞裂缝型油藏试井新模型[J].西南石油大学学报:自然科学版,2008,30(2):74–77.Peng Xiaolong,Du Zhimin,Liu Xueli,et al.A new well test model for the big size cavity-fracture reservoirs[J].Journal of Southwest Petroleum University:Science&Technology Edition,2008,30(2):74–77.
[11]彭小龙,刘学利,杜志敏.缝洞双重介质数值模型及渗流特征研究[J].西南石油大学学报:自然科学版,2009,31(1):61–64.Peng Xiaolong,Liu Xueli,Du Zhimin.Numerical model and the characteristics of flowing through porous media of fracture and vug dual-media[J].Journal of Southwest Petroleum University:Science&Technology Edition,2009,31(1):61–64.
[12]Liu Xueli,Yang Jian,Li Zongyu,et a1.A new methodology on reservoir modeling in the fracture-cavity carbonate rock of Tahe Oilfield[C].SPE 104429,2006.
[13]Peng Xiaolong,Du Zhimin,Liang Baosheng,et al.Darcy-stokes streamline simulation for the tahe-fractured reservoir with cavities[C].SPE 107314,2009.
[14]杨磊,李宗宇.新疆塔河油田1区低含水期稳油控水效果分析[J].成都理工大学学报:自然科学版,2003,30(4):368–373.Yang Lei,Li Zongyu.The effect analysis of coning water at the low-water-cut period in Tahe Oilfield of Xinjiang[J].Journal of Chengdu University of Technology:Science&Technology Edition,2003,30(4):368–373.
[15]罗娟.塔河油田缝洞型油藏高产井见水预警评价技术[C]//特殊类油藏开发技术文集.王元基.北京:石油工业出版社,2012,426–434.