收稿日期: 2015-02-09
修回日期: 2015-08-22
网络出版日期: 2015-10-10
基金资助
国家科技重大专项项目“高压气藏高效安全开发技术研究”(编号：2011ZX05015-002)资助.
New Method of Aquifer Influx Status Identification for Single Well in Gas Reservoir with Aquifer Support
Received date: 2015-02-09
Revised date: 2015-08-22
Online published: 2015-10-10
对有较强边底水能量气藏的开发来说，最担心的问题就是气井见水。气井见水会对地面工程处理造成麻烦，同时也会大大降低气井产能及气藏采收率。目前国内外使用的气井见水时间预测方法，常会因实际气藏非均质性等问题影响导致预测结果与实际情况偏差较大。在前人研究基础上，提出了一种采用气井实际产量及压力数据绘制的3种诊断曲线进行气井水侵阶段划分的新方法，通过3种诊断曲线均可将气井的生产划分为3个阶段——未水侵期、水侵初期及水侵中后期。通过该方法对现场实际井进行判断分析，可准确识别气井水侵阶段，确定有水气藏气井见水顺序，评价结果更符合实际情况，为后期气井产量调配提供了依据，保证了气田高效开发。
李勇，李保柱，夏静，张晶，郭凯，胡云鹏 . 有水气藏单井水侵阶段划分新方法[J]. 天然气地球科学, 2015 , 26(10) : 1951 -1955 . DOI: 10.11764/j.issn.1672-1926.2015.10.1951
For gas reservoirs with strong bottom or edge aquifer support,the most important thing is to avoid aquifer breakthrough in gas well.Because water production in gas wells not only results in processing problems in surface facilities,but also explicitly reduces well productivity and reservoir recovery.And there are lots of researches on prediction of water breakthrough time,but they are not practicable because of reservoir heterogeneity.This paper provides a new method with 3 diagnostic curves to identify aquifer influx status for single gas well,which is based on well production and pressure data.The whole production period of gas well can be classified into 3 periods based on the diagnostic curves:no aquifer influx period,early aquifer influx period,middle-late aquifer influx period.This new method has been used for actual gas well analysis,which can accurately identify gas well aquifer influx status and the water breakthrough sequence of all wells in the same gas field.And the evaluation results are very useful for well production rate optimization and gas field effective development.
[1]Yang Furong,Fan Pingtian,He Jing,et al.An approach to predict water breakthrough time in high gas rate w ells of gas reservoirs with edge water[J].Science Technology and Engineering,2013,13(29):8745-8747.[杨芙蓉,樊平天,贺静,等.边水气藏高产气井见水时间预测方法[J].科学技术与工程,2013,13(29):8745-8747.][ZK)]
[2]Kuo M C T.A Simplified Method for Water Coning Predictions[R].SPE Annual Technical Conference and Exhibition,5-8 October,San Francisco,California.SPE 12067.1983.
[3][JP2]Lee S H,Tung W B．General Coning Correlations Based on Mechanistic Studies[R].SPE Annual Technical Conference and Exhibition,23-26 September,New Orleans,Louisiana.SPE 20742.1990.
[4][JP2]Moran O O,Samaniego V F,Arevalo V J A.Advances in the Production Mechanism Diagnosis of Gas Reservoirs through Material Balance Studies[R].SPE Annual Technical Conference and Exhibition,26-29 September,Houston,Texas.SPE 91509.2004.
[5]Elahmady M,Wattenbarger R A.A Straight-Line p/z Plot is Possible in Waterdrive Gas Reservoirs[R].Rocky Mountain Oil & Gas Technology Symposium,16-18 April,Denver,Colorado,U.S.A.SPE 103258.2007.
[6]Hu Junkun,Li Xiaoping,Zhang Jiantao,et al.A new convenient method for calculating dynamic reserves and water influx in water driving gas reservoirs[J].Natural Gas Geoscience,2012,23(6):1175-1178.[胡俊坤,李晓平,张健涛,等.计算水驱气藏动态储量和水侵量的简易新方法[J].天然气地球科学,2012,23(6):1175-1178.]
[7]Tao Shiping,Feng Xi,Xiao Shihong.Using transient testing to identify early water invasion of gas reservoirs[J].NaturalGas Industry,2003,23(4):68-70.[陶诗平,冯曦,肖世洪.应用不稳定试井分析方法识别气藏早期水侵[J].天然气工业,2003,23(4):68-70.]
[8]Blasingame T A,McCray T L,Lee W J.Decline Curve Analysis for Variable Pressure Drop/Variable Flowrate Systems[R].SPE Gas Technology Symposium,22-24 January,Houston,Texas.SPE 21513.1991.
[9]Mattar L,McNeil R.Theflowing gas material balance[R].Journal of Canadian Petroleum Technology,1998,37(2):37-42.
[10]Wang Haiqiang,Li Yong,Liu Zhaowei.New method of an integrated dynamic characterization for carbonate gas condensate reservoirs[J].Natural Gas Geoscience,2013,24(5):1032-1036.[王海强,李勇,刘照伟.碳酸盐岩凝析气藏动态综合描述新方法[J].天然气地球科学,2013,24(5):1032-1036.]
[11]Agarwal R G,Gardner D C,Kleinsteiber S W,et al.Analyzing well production data using combined type curve and decline curve concepts[J].SPE Reservoir Evaluation & Engineering,1998,2(5):478-486.
[12]Anderson D,Mattar L.Practical Diagnostics Using Production Data and Flowing Pressures[R].SPE Annual Technical Conference and Exhibition,26-29 September,Houston,Texas.SPE 89939.2004.
[13]Anderson D M,Stotts G W J,Mattar L,et al.Production Data Analysis:Challenges,Pitfalls,Diagnostics[R].SPE Annual Technical Conference and Exhibition,24-27 September,San Antonio,Texas,USA.SPE 102048.2006.
[14]Li Yong,Li Baozhu,Hu Yongle,et al.The application of modern production decline analysis in the dynamic analysis of gas condensate reservoirs[J].Natural Gas Geoscience,2009,20(2):304-308.[李勇,李保柱,胡永乐,等.现代产量递减分析在凝析气田动态分析中的应用[J].天然气地球科学,2009,20(2):304-308.]
[15]Li Yong,Li Baozhu,Hu Yongle,et al.Water production analysis and reservoir simulation research in the Jilake gas condensate reservoir[J].Petroleum Exploration and Development,2010,37(1):89-93.[李勇,李保柱,胡永乐,等.吉拉克凝析气田单井产水分析及数值模拟研究[J].石油勘探与开发,2010,37(1):89-93.]
[16]Li Yong,Li Baozhu,Hu Yongle,et al.The application of single-well production analysis for carbonate gas condensate reservoirs[J].Petroleum Geology and Recovery Efficiency,2009,16(5):79-81.[李勇,李保柱,胡永乐,等.生产分析方法在碳酸盐岩凝析气藏中的应用[J].油气地质与采收率,2009,16(5):79-81.]
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号