杏南开发区水驱合理调整方法研究
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摘要
随着油田的不断开发,杏南开发区已经进入特高含水阶段。杏十区纯油区西部地下沉积环境和层间压力相差较大,注水开发后油层动用状况复杂,剩余油分布高度零散,调整挖潜难度大,如何对待特高含水期水驱开发指标的调整是油田急需解决的问题。
本文在充分收集杏十区纯油区西部区块地质开发信息的基础上,应用油藏数值模拟模拟软件Elipse对该区块进行了数值模拟,通过调整油藏各参数,使历史拟合精度达到要求。然后,对该区块剩余油分布规律进行研究,提出相应挖潜方法。在历史拟合结束的基础上,对杏十区纯油区西部进行了预测,针对5种不同沉积单元,研究了注采结构调整与生产井平均地层压力的关系、注水井平均地层压力的关系和注水井平均注入压力的关系。其中对生产井平均地层压力研究时考虑了不同含水级别的不同。研究了注采结构调整与5种沉积单元产液和含水之间的关系,对不同沉积单元产液和含水变化规律进行了分析。
确定出不同沉积单元合理采油速度和注水强度开发界限,确定出渗透率变异系数开发界限。对生产井做了不同降低流压方案,通过先将井分类,再看开发效果和先看开发效果,再对井分类两种角度,对油田开发指标进行了研究。文中的研究方法与成果为指导杏南开发区特高含水期开发提供了理论依据,也为其它油田开发指标调整提供了借鉴。
With the continuous development of oilfield, Xingnan development area has entered high water cut stage.The western underground sedimentary environment and preasure between reservoirs of tenth Xingnan area has large difference,the reservoir status after water flooding is complex, and the residual oil distribution is highly scattered, it is difficult to do the adjustment and potential seeking. So how to do the adjustment of water flooding development index in high water cut stage is a problem need to be resolved.
On the base of the geologic development information, I used reservoir numerical simulation software Elipse to do the numerical simulation work, by adjusting the reservoir parameters, I have made the history fitting accuratelly to the requirements. For residual oil distribution study of different sedimentary environment, I put forward the residual oil redevelopment method;On the historical fitting basis, I have done the forecasting research of the area. For five different sedimentary units, I studied the injection-production structure adjustment and average pressure relationship of production wells, and the average pressure relationship of Injection wells and average injection pressure of injection wells. In the study of the average pressure, I considered the different water cut levels. I researched the Injection-production structure adjustment and the relationship of producing fluid and water cut of five kinds of sedimentary units, and analyzed the discipline of the relationship.
I got the residual oil production speed of different sedimentary units and development boundaries of water injection intensity, and confirmed the development boundaries of permeability coefficient variation. For production wells, I made different reducing flow pressure schemes. In two methods, I have studied the development indexes of the reservoir. The research methods and results in this article provided theory basis for guiding the high water cut period development area, and also provided a reference for adjustment of other oilfield development indexes.
本文在充分收集杏十区纯油区西部区块地质开发信息的基础上,应用油藏数值模拟模拟软件Elipse对该区块进行了数值模拟,通过调整油藏各参数,使历史拟合精度达到要求。然后,对该区块剩余油分布规律进行研究,提出相应挖潜方法。在历史拟合结束的基础上,对杏十区纯油区西部进行了预测,针对5种不同沉积单元,研究了注采结构调整与生产井平均地层压力的关系、注水井平均地层压力的关系和注水井平均注入压力的关系。其中对生产井平均地层压力研究时考虑了不同含水级别的不同。研究了注采结构调整与5种沉积单元产液和含水之间的关系,对不同沉积单元产液和含水变化规律进行了分析。
确定出不同沉积单元合理采油速度和注水强度开发界限,确定出渗透率变异系数开发界限。对生产井做了不同降低流压方案,通过先将井分类,再看开发效果和先看开发效果,再对井分类两种角度,对油田开发指标进行了研究。文中的研究方法与成果为指导杏南开发区特高含水期开发提供了理论依据,也为其它油田开发指标调整提供了借鉴。
With the continuous development of oilfield, Xingnan development area has entered high water cut stage.The western underground sedimentary environment and preasure between reservoirs of tenth Xingnan area has large difference,the reservoir status after water flooding is complex, and the residual oil distribution is highly scattered, it is difficult to do the adjustment and potential seeking. So how to do the adjustment of water flooding development index in high water cut stage is a problem need to be resolved.
On the base of the geologic development information, I used reservoir numerical simulation software Elipse to do the numerical simulation work, by adjusting the reservoir parameters, I have made the history fitting accuratelly to the requirements. For residual oil distribution study of different sedimentary environment, I put forward the residual oil redevelopment method;On the historical fitting basis, I have done the forecasting research of the area. For five different sedimentary units, I studied the injection-production structure adjustment and average pressure relationship of production wells, and the average pressure relationship of Injection wells and average injection pressure of injection wells. In the study of the average pressure, I considered the different water cut levels. I researched the Injection-production structure adjustment and the relationship of producing fluid and water cut of five kinds of sedimentary units, and analyzed the discipline of the relationship.
I got the residual oil production speed of different sedimentary units and development boundaries of water injection intensity, and confirmed the development boundaries of permeability coefficient variation. For production wells, I made different reducing flow pressure schemes. In two methods, I have studied the development indexes of the reservoir. The research methods and results in this article provided theory basis for guiding the high water cut period development area, and also provided a reference for adjustment of other oilfield development indexes.
引文
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[2]刘博,朱建伟,杨金华.杏南开发区表外储层压力敏感性研究[J].内蒙古石油化工,2009(23):107-109.
[3]赵军,梅元贵.英法海底隧道空气动力学效应的数值模拟方法介绍[J].隧道建设,2007:70-75.
[4]马银龙.红岗萨尔图层状油藏水洗规律研究[D].浙江:浙江大学,2009:18.
[5]谢俊.剩余油饱和度平面分布方法研究及应用[J].西安石油学报,1998,13(4):40-42.
[6] Lenormand R.Fluid in Porous Media.Report 40814,Institute Francais Dupetrole,1993:18.
[7]谢俊,张金亮.剩余油描述与预测[M].北京:石油工业出版社,2003:1-13.
[8]俞启泰.关于剩余油研究的探讨[J].石油勘探与开发,1997(4):46-50.
[9]周伟东,窦之林,孙晓燕.孤东油田特高含水期注采结构优化研究与应用[J].油气采收率技术,2000,7(2):27-29.
[10]崔笛.孤南油田注采结构调整[J].油气采收率技术,2000,7(1):19-22.
[11]赵军.江苏溱潼凹陷草舍油田泰州组油藏注采结构调整[J].油气田地面工程,2002,21(6):48-49.
[12]邱坤态,敬国超,董科武等.双河油田特高含水后期开发阶段注采结构调整的实践与应用[J].河南石油,2002,16(2):18-20.
[13]曲建山,周新波,王洪亮.一种预测低渗透油藏合理采油速度的计算公式[J].大庆石油地质与开发,2010,20(5):25-26.
[14]俞启泰,李文兴.一种新的预测油田产量变化的方法—剩余可采储量采油速度法[J].石油勘探与开发,1997,24(6):82-85.
[15]王娟茹,靳晓军,胡锌波等.焉耆盆地宝北区块低渗透油藏合理采油速度的确定[J].新疆石油地质,2010,3(22):241-242.
[16]刘洪波,荆克尧.选择合理采油速度保持石油工业持续稳定发展[J].当代石油石化,2001,9(5):30-33.
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[18] Ayako Fukumoto, Toru Sato, Shinichiro Hirabayashi, Paul Brumby/University of Tokyo, Fumio Kiyono, Takao Ebinuma. SS - Gas Hydrate: Microscale Modelling of Dissociation and Formation of Methane Hydrate in Sediment. Hideo Narita/National Institute of Advanced Industrial Science and Technology. OTC, 20755-MS,2010,545-552.
[19] Mr. George Harris , Phillips Petroleum ; Mr. Cedric D. Adams , C.D.A. Corrosion Consulting Services ; Dr. James D. Garber. USE OF A CORROSION PREDICTIONPROGRAM AS AN ENGINEERING TOOL, University of Southwestern Louisiana.NACE, 97607,1997,356-362.
[20] C.R. Clarkson, University of Calgary. Case Study: Production Data and Pressure Transient Analysis of Horseshoe Canyon CBM Wells.SPE, 114485-PA,2009,312-331.
[21] P.E. Parta, SPE, A. Parapat, R. Burgos, SPE, J. Christian, SPE, and A. Jamaluddin, SPE, Schlumberger; and G. Rae, S.K. Foo, SPE, J. Ghani, SPE, and M. Musa, Talisman Malaysia Limited, A Successful Application of Fiber-Optic-Enabled Coiled Tubing With Distributed-Temperature Sensing Along With Pressures To Diagnose Production Decline in an Offshore Oil Well.SPE, 121696-PA,2010,204-210.
[22] J.F. App, SPE, Chevron Energy Technology CoMPany, Nonisothermal and Productivity Behavior of High-Pressure Reservoirs.SPE, 114705-PA,2010,555-564.
[23] P. Haghighat and B.B. Maini, Schulich School of Engineering, University of Calgary. Role of Asphaltene Precipitation in Vapex Process.SPE, 134244-PA,2010,456-463.
[24] X. Deng, H. Huang, L. Zhao, D.H.-S. Law, and T.N. Nasr, Alberta Research Council. Simulating the ES-SAGD Process With Solvent Mixture in Athabasca Reservoirs.SPE, 132488-PA,2010,242-233.
[25] A. Mai, Laricina Energy Ltd., and A. Kantzas, University of Calgary and TIPM Laboratory. Mechanisms of Heavy Oil Recovery by Low Rate Waterflooding.SPE, 134247-PA,2010,348-356.
[26]王怒涛,钟飞翔,代万波等.确定合理采油速度的最优化方法[J].断块油气田,2005,12(4):45-47.
[27]王学忠.可采储量采油速度区分砂岩油藏开发阶段[J].断块油气田,2004,11(6):49-51.
[28]彭彦素.纯化油田中高含水期合理采油速度研究[J].内蒙古石油化工,2006:138.
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