Ahdeb油田水平井控水完井及一体化耦合模型
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摘要
Ahdeb油田上部主力层系采用水平井注采井网开发,前期取得了较好开发效果,但开发过程中部分井组稳产与高含水矛盾日益突出,亟需开展水平井调流控水研究。针对Ahdeb油田这类边水或注入水在高渗层或断层裂缝带突窜引起的水平井见水,基于不同钻遇储层特征,形成了水平井控水完井分类治理方案,并建立了一套同时适用于盲筛分段组合、中心管和ICD控水完井工艺的井筒-油藏一体化耦合数值模型。该模型重点考虑了水平井筒受多种作用力下的变质量流动过程,提高了单井的模拟和实际含水率匹配度。研究表明:对于根部见水的水平井,ICD完井及中心管完井均有较好控水效果,含水率从49. 8%分别下降至37. 8%和35. 0%。完井控水装置的限流范围应略大于出水井段,才能有效控制含水率。调流控水装置下入时机应选择在水平井见水前,能够最大程度降低整个生产过程中的含水率,从而提高单井累产油量。
The major beds in upper Ahdeb oilfield are developed with success through an early stage horizontal well flooding-production method. However in the current stage,the observed high water cut in many producers has affected the stable production seriously. Therefore,it is urgent to study the water control of horizontal wells. In observing that the horizontal well water breakthrough is caused by active edge or injected water in high-permeability layers or fault fissures,we set up a serious of completion schemes to achieve water control of horizontal wells based on an integrated analysis of encountered reservoirs in drilling,and an newly established numerical model of integrated wellbore-reservoir coupling suitable for simulating screen,central tube,and ICD water control completion. In the modeling,the variable mass flows in horizontal wellbores under multiple forces have been considered to increase the match between the single-well simulation results and the real water cut performance. The results show that the ICD and central tube completion measures are more effective in water control when the water breaks through in the heel section,with the water cut decreasing from 49. 8% to 37. 8% and35. 0% respectively. In order to achieve efficient water control,the flow-limiting range of the water control completion devices should be slightly longer than that of water breakthrough section. The application of water control devices before water breakthrough of horizontal wells will lower the cumulative water cut during the whole production life to the maximal degree,and in turn this will increase the cumulative production for single wells.
The major beds in upper Ahdeb oilfield are developed with success through an early stage horizontal well flooding-production method. However in the current stage,the observed high water cut in many producers has affected the stable production seriously. Therefore,it is urgent to study the water control of horizontal wells. In observing that the horizontal well water breakthrough is caused by active edge or injected water in high-permeability layers or fault fissures,we set up a serious of completion schemes to achieve water control of horizontal wells based on an integrated analysis of encountered reservoirs in drilling,and an newly established numerical model of integrated wellbore-reservoir coupling suitable for simulating screen,central tube,and ICD water control completion. In the modeling,the variable mass flows in horizontal wellbores under multiple forces have been considered to increase the match between the single-well simulation results and the real water cut performance. The results show that the ICD and central tube completion measures are more effective in water control when the water breaks through in the heel section,with the water cut decreasing from 49. 8% to 37. 8% and35. 0% respectively. In order to achieve efficient water control,the flow-limiting range of the water control completion devices should be slightly longer than that of water breakthrough section. The application of water control devices before water breakthrough of horizontal wells will lower the cumulative water cut during the whole production life to the maximal degree,and in turn this will increase the cumulative production for single wells.
引文
[1]曾保全,程林松,李春兰,等.特低渗透油藏压裂水平井开发效果评价[J].石油学报,2010,31(5):791-796.Zeng Baoquan,Cheng Linsong,Li Chunlan,et al. Development evaluation of fractured horizontal wells in ultra-low permeability reservoirs[J]. Acta Petrolei Sinica,2010,31(5):791-796.
[2]张瑞霞,王继飞,董社霞,等.水平井控水完井技术现状与发展趋势[J].钻采工艺,2012,35(4):35-37.Zhang Ruixia,Wang Jifei,Dong Shexia,et al. Status quo and development trends of the water-controlling completion technology of horizontal well[J]. Drilling&Production Technology,2012,35(4):35-37.
[3] Ju B,Dai S,Fan T,et al. An effective method to improve recovery of heavy oil reservoir with bottom water drive[C]∥International Petroleum Technology Conference,2005.
[4]熊春明,唐孝芬.国内外堵水调剖技术最新进展及发展趋势[J].石油勘探与开发,2007,34(1):2-0.Xiong Chunming,Tang Xiaofen. Technologies of water shut-off and profile control:An overview[J]. Petroleum Exploration and Development,2007,34(1):2-0.
[5]曲从锋,王兆会,袁进平.智能完井的发展现状和趋势[J].国外油田工程,2010(7):28-31.Qu Congfeng,Wang Zhaohui,Yuan Jinping. The development status and trend of intelligent completion[J]. Foreign Oilfield Engineering,2010(7):28-31.
[6] Kuchuk F J,Goode P A,Wilkinson D J,et al. Pressure-transient behavior of horizontal wells with and without gas cap or aquifer[J]. SPE Formation Evaluation,1991,6(01):86-94.
[7] Yildiz T. Productivity of selectively perforated horizontal wells[J].SPE Production&Operations,2006,21(01):75-80.
[8] Ouyang L B,Huang W S. A comprehensive evaluation of well-completion impacts on the performance of horizontal and multilateral wells[C]∥SPE annual technical conference and exhibition,Society of Petroleum Engineers,2005.
[9] Kabir A H,Vargas J A. Accurate inflow profile prediction of horizontal wells using a newly developed coupled reservoir and wellbore analytical models[C]∥SPE Oil and Gas India Conference and Exhibition,Society of Petroleum Engineers,2010.
[10]喻高明,凌建军,蒋明煊,等.砂岩底水油藏开采机理及开发策略[J].石油学报,1997,18(2):61-65.Yu Gaomin,Ling Jianjun,Jiang Mingxuan,et al. Production mechanism and development tactics on sandstone reservoirs with bottom water[J]. Acta Petrolei Sinica,1997,18(2):61-65.
[11]王静.机械式防砂管原油渗流试验及数值模拟[D].江苏大学,2009.Wang Jing. Experimental and numerical simulation research on crude oil seepage of mechanical sand screen[D]. Jiangsu University,2009.
[12]卢川,刘慧卿,卢克勤,等.非均质底水油藏水平井合理生产压差实验研究[J].特种油气藏,2013,20(4):117-121.Lu Chuan,Liu Huiqing,Lu Keqin,et al. Experimental study on reasonable drawdown pressure in horizontal wells in heterogeneous reservoir with bottom water[J]. Special Oil&Gas Reservoirs,2013,20(4):117-121.
[13] Least B,Bonner A J,Regulacion R E,et al. Autonomous icd installation success in ecuador heavy oil[C]∥SPE Annual Technical Conference and Exhibition,Society of Petroleum Engineers,2013.
[14]安永生,张宁,张恒.水平井ICD控水完井一体化耦合数值模拟研究[J].中国海上油气,2017,29(2):109-113.An Yongsheng,Zhang Ning,Zhang Heng. Numerical simulation study on the coupling of horizontal wells with ICD water control completion[J]. China Offshore Oil and Gas,2017,29(2):109-113.
[15] Garcia G A,Coronado M P,Gavioli P. Identifying well completion applications for passive inflow-control devices[C]∥SPE Annual Technical Conference and Exhibition,Society of Petroleum Engineers,2009.
[16]谢海兵,马远乐,桓冠仁,等.非结构网格油藏数值模拟方法研究[J].石油学报,2001,22(1):63-66.Xie Haibing,Ma Yuanle,Huan Guanren,et al. Study of unstructured grids in reservoir numerical simulation[J]. Acta Petrolei Sinica,2001,22(1):63-66.
[17]陈献铭.水平井ICD完井控水增油效果数值模拟研究[D].西南石油大学,2014.Chen Xianming. Numerical simulation of water control and stimulation effect of ICD completion in horizontal well[D]. Southwest Petroleum University,2014.
[18]陈会娟,李明忠,王一平,等.割缝筛管水平井注蒸汽热力参数分布规律数值模拟研究[J].石油钻探技术,2015,43(3):109-115.Chen Huijuan,Li Mingzhong,Wang Yiping,et al. Numerical simulation in steam injection wells for optimizing the distribution of thermal parameters in horizontal wells with slotted liners[J]. Petroleum Drilling Techniques,2015,43(3):109-115.
[2]张瑞霞,王继飞,董社霞,等.水平井控水完井技术现状与发展趋势[J].钻采工艺,2012,35(4):35-37.Zhang Ruixia,Wang Jifei,Dong Shexia,et al. Status quo and development trends of the water-controlling completion technology of horizontal well[J]. Drilling&Production Technology,2012,35(4):35-37.
[3] Ju B,Dai S,Fan T,et al. An effective method to improve recovery of heavy oil reservoir with bottom water drive[C]∥International Petroleum Technology Conference,2005.
[4]熊春明,唐孝芬.国内外堵水调剖技术最新进展及发展趋势[J].石油勘探与开发,2007,34(1):2-0.Xiong Chunming,Tang Xiaofen. Technologies of water shut-off and profile control:An overview[J]. Petroleum Exploration and Development,2007,34(1):2-0.
[5]曲从锋,王兆会,袁进平.智能完井的发展现状和趋势[J].国外油田工程,2010(7):28-31.Qu Congfeng,Wang Zhaohui,Yuan Jinping. The development status and trend of intelligent completion[J]. Foreign Oilfield Engineering,2010(7):28-31.
[6] Kuchuk F J,Goode P A,Wilkinson D J,et al. Pressure-transient behavior of horizontal wells with and without gas cap or aquifer[J]. SPE Formation Evaluation,1991,6(01):86-94.
[7] Yildiz T. Productivity of selectively perforated horizontal wells[J].SPE Production&Operations,2006,21(01):75-80.
[8] Ouyang L B,Huang W S. A comprehensive evaluation of well-completion impacts on the performance of horizontal and multilateral wells[C]∥SPE annual technical conference and exhibition,Society of Petroleum Engineers,2005.
[9] Kabir A H,Vargas J A. Accurate inflow profile prediction of horizontal wells using a newly developed coupled reservoir and wellbore analytical models[C]∥SPE Oil and Gas India Conference and Exhibition,Society of Petroleum Engineers,2010.
[10]喻高明,凌建军,蒋明煊,等.砂岩底水油藏开采机理及开发策略[J].石油学报,1997,18(2):61-65.Yu Gaomin,Ling Jianjun,Jiang Mingxuan,et al. Production mechanism and development tactics on sandstone reservoirs with bottom water[J]. Acta Petrolei Sinica,1997,18(2):61-65.
[11]王静.机械式防砂管原油渗流试验及数值模拟[D].江苏大学,2009.Wang Jing. Experimental and numerical simulation research on crude oil seepage of mechanical sand screen[D]. Jiangsu University,2009.
[12]卢川,刘慧卿,卢克勤,等.非均质底水油藏水平井合理生产压差实验研究[J].特种油气藏,2013,20(4):117-121.Lu Chuan,Liu Huiqing,Lu Keqin,et al. Experimental study on reasonable drawdown pressure in horizontal wells in heterogeneous reservoir with bottom water[J]. Special Oil&Gas Reservoirs,2013,20(4):117-121.
[13] Least B,Bonner A J,Regulacion R E,et al. Autonomous icd installation success in ecuador heavy oil[C]∥SPE Annual Technical Conference and Exhibition,Society of Petroleum Engineers,2013.
[14]安永生,张宁,张恒.水平井ICD控水完井一体化耦合数值模拟研究[J].中国海上油气,2017,29(2):109-113.An Yongsheng,Zhang Ning,Zhang Heng. Numerical simulation study on the coupling of horizontal wells with ICD water control completion[J]. China Offshore Oil and Gas,2017,29(2):109-113.
[15] Garcia G A,Coronado M P,Gavioli P. Identifying well completion applications for passive inflow-control devices[C]∥SPE Annual Technical Conference and Exhibition,Society of Petroleum Engineers,2009.
[16]谢海兵,马远乐,桓冠仁,等.非结构网格油藏数值模拟方法研究[J].石油学报,2001,22(1):63-66.Xie Haibing,Ma Yuanle,Huan Guanren,et al. Study of unstructured grids in reservoir numerical simulation[J]. Acta Petrolei Sinica,2001,22(1):63-66.
[17]陈献铭.水平井ICD完井控水增油效果数值模拟研究[D].西南石油大学,2014.Chen Xianming. Numerical simulation of water control and stimulation effect of ICD completion in horizontal well[D]. Southwest Petroleum University,2014.
[18]陈会娟,李明忠,王一平,等.割缝筛管水平井注蒸汽热力参数分布规律数值模拟研究[J].石油钻探技术,2015,43(3):109-115.Chen Huijuan,Li Mingzhong,Wang Yiping,et al. Numerical simulation in steam injection wells for optimizing the distribution of thermal parameters in horizontal wells with slotted liners[J]. Petroleum Drilling Techniques,2015,43(3):109-115.