苏里格大型致密砂岩气田开发井型井网技术
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摘要
苏里格气田是中国致密砂岩气田的典型代表,井型井网技术是其提高单井控制储量和采收率、实现气田规模有效开发的关键技术。针对苏里格气田大面积、低丰度、强非均质性的特征,形成了大型复合砂体分级构型描述与优化布井技术、井型井网优化技术、水平井优化设计技术和不同类型井产能评价技术,为苏里格气田产能建设Ⅰ+Ⅰ类井比例达到75%～80%、预期采收率提高到35%以上以及水平井的规模化应用发挥了重要的技术支撑作用。为进一步提高苏里格气田单井产量和采收率,应继续开展低效井侧钻、多分支水平井、多井底定向井等不同井型,以及水平井井网、多井型组合井网的探索和开发试验。
Sulige gas field is a typical tight sand gas field in China.Well type and pattern optimization is the key technology to improve single well estimated reserves and recovery factor and to achieve effective field development.In view of the large area,low abundance and high heterogeneity of Sulige gas field,a series of techniques have been developed including hierarchical description for the reservoir architecture of large composite sand bodies and well spacing optimization,well pattern optimization,design and optimization for horizontal trajectory and deliverability evaluation for different types of gas wells.These technologies provide most important technical supports for the increases of class I and Ⅱ wells proportion to 75%-80% with recovery factor enhanced by more than 35% and for the industrial application of horizontal drilling.To further improve individual well production and recovery factor,attempts and pilot tests in various well types including side tracking of deficient wells,multilateral horizontal wells,and directional wells,and horizontal well pattern and combined well pattern of various well types should be carried out throughout the development.
Sulige gas field is a typical tight sand gas field in China.Well type and pattern optimization is the key technology to improve single well estimated reserves and recovery factor and to achieve effective field development.In view of the large area,low abundance and high heterogeneity of Sulige gas field,a series of techniques have been developed including hierarchical description for the reservoir architecture of large composite sand bodies and well spacing optimization,well pattern optimization,design and optimization for horizontal trajectory and deliverability evaluation for different types of gas wells.These technologies provide most important technical supports for the increases of class I and Ⅱ wells proportion to 75%-80% with recovery factor enhanced by more than 35% and for the industrial application of horizontal drilling.To further improve individual well production and recovery factor,attempts and pilot tests in various well types including side tracking of deficient wells,multilateral horizontal wells,and directional wells,and horizontal well pattern and combined well pattern of various well types should be carried out throughout the development.
引文
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[10]史松群,赵玉华.苏里格气田低阻砂岩储层的含气性预测研究[J].石油地球物理勘探,2003,38(1):77-83.Shi Songqun,Zhao Yuhua.Research on gas-bearing prediction usingAVO in sandstone reservoir with low-impedance,Sulige gas field[J].Oil Geophysical Prospecting,2003,38(1):77-83.
[11]史松群,赵玉华,程思检,等.鄂尔多斯盆地苏里格气田二维多波地震技术[J].低渗透油气田,2007,12(3):56-62.Shi Songqun,Zhao Yuhua,Cheng Sijian,et al.2D multi-waveseismic exploration technology in Sulige Gasfield of Ordos Basin[J].Low Permeability Oil&Gas Fields,2007,12(3):56-62.
[12]Jin Minquan,Shannon M.Introduction of exploitation experiences inPinedale Gas Field[R].Beijing:Seminar of Unconventional NaturalGas Exploitation,Shell and PetroChina,2009.
[13]何光怀,李进步,王继平,等.苏里格气田开发技术新进展及展望[J].天然气工业,2011,31(2):12-16.He Guanghuai,Li Jinbu,Wang Jiping,et al.New progress andoutlook of development technologies in the Sulige Gas Field[J].Natural Gas Industry,2011,31(2):12-16.
[14]赵静.吉林油田低渗油藏水平井开发技术[J].石油勘探与开发,2011,38(5):594-599.Zhao Jing.Development techniques of horizontal wells in lowpermeability reservoirs,Jilin Oilfield[J].Petroleum Exploration andDevelopment,2011,38(5):594-599.
[15]郝玉鸿,王永强,杨亚涛,等.榆林气田北区开发效果评价[J].石油化工应用,2011,30(1):37-44.Hao Yuhong,Wang Yongqiang,Yang Yatao,et al.Yulin gas fieldnorth of development evaluation[J].Petrochemical Industry Application,2011,30(1):37-44.
[16]Baihly J,Grant D,Fan L,et al.Horizontal wells in tight gas sands:Amethodology for risk management to maximize success[R].SPE110067,2007.
[17]Bagherian B,Sarmadivaleh M,Ghalambor A,et al.Optimization ofmultiple-fractured horizontal tight gas well[R].SPE 127899,2010.
[18]Blasingame T A,McCray T L,Lee W J,et al.Decline curve analysisfor variable pressure drop/variable flowrate systems[R].SPE 21513,1991.
[19]Fetkovich M J,Vienot M E,Bradley M D,et al.Decline-curveanalysis using type curves:case histories[J].SPE FormationEvaluation,1987(Dec.):637-656.
[20]Fraim M L,Wattenbarger R A.Gas reservoir decline-curve analysisusing type curves with real gas pseudopressure and normalizedtime[J].SPE Formation Evaluation,1987(Dec.):671-682.
[2]Surdam R C.A new paradigm for gas exploration in anomalouslypressured“tight gas sands”in the Rocky Mountain Laramidebasins[C]//Surdam R C.AAPG Memoir 67:Seals,traps,and thepetroleum system.Tulsa:AAPG,1997:283-298.
[3]Holditch S A.Tight gas sands[J].JPT,2006,58(6):85-90.
[4]戴金星,倪云燕,吴小奇.中国致密砂岩气及在勘探开发上的重要意义[J].石油勘探与开发,2012,39(3):257-264.Dai Jinxing,Ni Yunyan,Wu Xiaoqi.Tight gas in China and itssignificance in exploration and exploitation[J].Petroleum Explorationand Development,2012,39(3):257-264.
[5]温晓红,周拓,胡勇,等.致密岩心中气体渗流特征及其影响因素实验研究[J].石油实验地质,2010,32(6):592-595.Wen Xiaohong,Zhou Tuo,Hu Yong,et al.Experimental study ofproperties and influence factors of gas flow in tight core[J].Petroleum Geology&Experiment,2010,32(6):592-595.
[6]邹才能,杨智,陶士振,等.纳米油气与源储共生型油气聚集[J].石油勘探与开发,2012,39(1):13-26.Zou Caineng,Yang Zhi,Tao Shizhen,et al.Nano-hydrocarbon andthe accumulation in coexisting source and reservoir[J].PetroleumExploration and Development,2012,39(1):13-26.
[7]何东博,王丽娟,冀光,等.苏里格致密砂岩气田开发井距优化[J].石油勘探与开发,2012,39(4):458-464.He Dongbo,Wang Lijuan,Ji Guang,et al.Well spacing optimizationfor Sulige tight sand gas field,NW China[J].Petroleum Explorationand Development,2012,39(4):458-464.
[8]穆龙新,贾爱林,陈亮,等.储层精细研究方法[M].北京:石油工业出版社,2000:10-26.Mu Longxin,Jia Ailin,Chen Liang,et al.Detailed researchingmethods of oil and gas reservoir[M].Beijing:Petroleum IndustryPress,2000:10-26.
[9]李顺明,宋新民,蒋有伟,等.高尚堡油田砂质辫状河储集层构型与剩余油分布[J].石油勘探与开发,2011,38(4):474-482.Li Shunming,Song Xinmin,Jiang Youwei,et al.Architecture andremaining oil distribution of the sandy braided river reservoir in theGaoshangpu Oilfield[J].Petroleum Exploration and Development,2011,38(4):474-482.
[10]史松群,赵玉华.苏里格气田低阻砂岩储层的含气性预测研究[J].石油地球物理勘探,2003,38(1):77-83.Shi Songqun,Zhao Yuhua.Research on gas-bearing prediction usingAVO in sandstone reservoir with low-impedance,Sulige gas field[J].Oil Geophysical Prospecting,2003,38(1):77-83.
[11]史松群,赵玉华,程思检,等.鄂尔多斯盆地苏里格气田二维多波地震技术[J].低渗透油气田,2007,12(3):56-62.Shi Songqun,Zhao Yuhua,Cheng Sijian,et al.2D multi-waveseismic exploration technology in Sulige Gasfield of Ordos Basin[J].Low Permeability Oil&Gas Fields,2007,12(3):56-62.
[12]Jin Minquan,Shannon M.Introduction of exploitation experiences inPinedale Gas Field[R].Beijing:Seminar of Unconventional NaturalGas Exploitation,Shell and PetroChina,2009.
[13]何光怀,李进步,王继平,等.苏里格气田开发技术新进展及展望[J].天然气工业,2011,31(2):12-16.He Guanghuai,Li Jinbu,Wang Jiping,et al.New progress andoutlook of development technologies in the Sulige Gas Field[J].Natural Gas Industry,2011,31(2):12-16.
[14]赵静.吉林油田低渗油藏水平井开发技术[J].石油勘探与开发,2011,38(5):594-599.Zhao Jing.Development techniques of horizontal wells in lowpermeability reservoirs,Jilin Oilfield[J].Petroleum Exploration andDevelopment,2011,38(5):594-599.
[15]郝玉鸿,王永强,杨亚涛,等.榆林气田北区开发效果评价[J].石油化工应用,2011,30(1):37-44.Hao Yuhong,Wang Yongqiang,Yang Yatao,et al.Yulin gas fieldnorth of development evaluation[J].Petrochemical Industry Application,2011,30(1):37-44.
[16]Baihly J,Grant D,Fan L,et al.Horizontal wells in tight gas sands:Amethodology for risk management to maximize success[R].SPE110067,2007.
[17]Bagherian B,Sarmadivaleh M,Ghalambor A,et al.Optimization ofmultiple-fractured horizontal tight gas well[R].SPE 127899,2010.
[18]Blasingame T A,McCray T L,Lee W J,et al.Decline curve analysisfor variable pressure drop/variable flowrate systems[R].SPE 21513,1991.
[19]Fetkovich M J,Vienot M E,Bradley M D,et al.Decline-curveanalysis using type curves:case histories[J].SPE FormationEvaluation,1987(Dec.):637-656.
[20]Fraim M L,Wattenbarger R A.Gas reservoir decline-curve analysisusing type curves with real gas pseudopressure and normalizedtime[J].SPE Formation Evaluation,1987(Dec.):671-682.
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