致密砂岩油藏水平井可采储量估算方法
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摘要
致密砂岩油藏大规模压裂水平井可采储量是评价水平井开发经济效益的关键,而水平井累计产油及最终采收率与单井控制可采储量有关。利用产量递减法、采油速度法和试井解释3种方法估算了大庆外围T1试验区致密油藏大规模压裂水平井可采储量。结果表明:致密油水平井大规模压裂获得较高产量,但产量递减快,平均采油速度由第1年的2.4%降到第3年的1.1%,66.78%的可采储量在前3年采出;产量递减法和采油速度法预测单井平均可采储量分别为1.31×104t和1.28×104t,解析试井法预测单井平均可采储量为1.11×104t。3种方法预测得到的单井可采储量可作为大规模压力水平井开发效果重要指标和选井依据,对可采储量低的井,建议在精细地质和工程一体化研究基础上,采取有针对性重复压裂和能量补充等措施,进一步改善开发效果。
The recoverable reserves of largely fractured horizontal wells in tight sandstone oil reservoirs are the key to evaluate the economic benefits of the horizontal wells,and the accumulative oil production and ultimate recovery of the horizontal wells are related to the single well controlled recoverable reserves. With the help of the following methods: production decline,oil recovery rate and well test interpretation methods,the recoverable reserves of largely fractured horizontal wells in the tight oil reservoirs in Test Area T1 of Daqing peripheral oilfields were estimated. The achievements show that the large-scale fracturing in the tight-oil horizontal well can obtain high production,but the production decline is rather fast,the average oil recovery rate is reduced from 2. 4% in the first year to 1. 1% in the third year,and 66. 78% of the recoverable reserves are produced in the first 3 years; the average recoverable reserves of the single well are predicted to be 13. 1 × 104 t and 12. 8 × 104 t respectively by the production decline method and the oil recovery rate method,and for the well test interpretation method,the average recoverable reserves per well are 11. 1 × 104 t; the individual-well recoverable reserves predicted by the 3 methods can be used as an important index for the development effects of largely fractured horizontal wells and the evidences for the well selection,for the well with rather lower recoverable reserves,it is suggested that on the bases of the re-search on the integration between the fine geology and engineering,the measures such as the specific repeated fracturing,energy filling and so on should be adopted to further improve the development effects.
The recoverable reserves of largely fractured horizontal wells in tight sandstone oil reservoirs are the key to evaluate the economic benefits of the horizontal wells,and the accumulative oil production and ultimate recovery of the horizontal wells are related to the single well controlled recoverable reserves. With the help of the following methods: production decline,oil recovery rate and well test interpretation methods,the recoverable reserves of largely fractured horizontal wells in the tight oil reservoirs in Test Area T1 of Daqing peripheral oilfields were estimated. The achievements show that the large-scale fracturing in the tight-oil horizontal well can obtain high production,but the production decline is rather fast,the average oil recovery rate is reduced from 2. 4% in the first year to 1. 1% in the third year,and 66. 78% of the recoverable reserves are produced in the first 3 years; the average recoverable reserves of the single well are predicted to be 13. 1 × 104 t and 12. 8 × 104 t respectively by the production decline method and the oil recovery rate method,and for the well test interpretation method,the average recoverable reserves per well are 11. 1 × 104 t; the individual-well recoverable reserves predicted by the 3 methods can be used as an important index for the development effects of largely fractured horizontal wells and the evidences for the well selection,for the well with rather lower recoverable reserves,it is suggested that on the bases of the re-search on the integration between the fine geology and engineering,the measures such as the specific repeated fracturing,energy filling and so on should be adopted to further improve the development effects.
引文
[1]中国石油天然气总公司.石油可采储量计算方法:SY/T5367—1998[S].北京:石油工业出版社,1999.
[2]国家能源局.石油可采储量计算方法:SY/T 5367—2010[S].北京:石油工业出版社,2010.
[3]Cook T A.Procedure for calculating estimated ultimate recoveries of Bakken and Three Forks Formations horizontal wells in the Williston Basin[M].USGS:Open-File Report,2013.
[4]孔宪政.萨南开发区水驱递减率预测[J].大庆石油地质与开发,2014,33(4):84-86.
[5]王静伟,计秉玉,张文彪.基于多因素的油田可采储量不确定性分析[J].中国海上油气,2016,28(4):76-82.
[6]周鹏,陈明,王庆勇,等.预测油气田产量和可采储量的广义Weibull模型[J].大庆石油地质与开发,2017,36(5):93-97.
[7]邓森,王怒涛,孟令强,等.高含水期两种新型水驱特征曲线的建立与应用[J].大庆石油地质与开发,2017,36(4):58-63.
[8]王小林,于立君,李治平,等.特高含水期新型水驱特征曲线[J].大庆石油地质与开发,2015,34(6):54-56.
[9]丁静.单项措施增加可采储量计算[J].石油地质与工程,2009,23(2):58-59.
[10]邴绍献.油田单井可采储量定量预测模型[J].油气地质与采收率,2013,20(1):85-88.
[11]刘昌鸣.剩余经济可采储量及储量价值影响因素敏感程度分析[J].油气地质与采收率,2017,24(2):90-94.
[12]陈元千,李剑,李云波,等.利用典型曲线拟合的递减常数预测油气藏的可采储量[J].中国海上油气,2015,27(5):49-54.
[13]陈元千,唐玮.油气田剩余可采储量、剩余可采储采比和剩余可采程度的年度评价方法[J].石油学报,2016,37(6):796-801.
[14]朱圣举,张皎生,安小平.剩余可采储量采油速度与Arps递减规律关系[J].特种油气藏,2016,23(4):105-108.
[15]金勇,程诗胜.分段压裂水平井吞吐补充能量方式优化[J].大庆石油地质与开发,2016,35(5):92-95.
[16]杜保健,程林松,曹仁义,等.致密油藏体积压裂水平井开发效果[J].大庆石油地质与开发,2014,33(1):96-101.
[17]何蓉超.低渗透油藏可采储量计算方法研究[D].大庆:东北石油大学,2012.
[18]齐梅,侯建锋,蒋漫旗,等.可采储量标定的合理确定性探讨[J].油气地质与采收率,2017,14(6):62-65.
[19]童凯军,郑军,杨露,等.封闭油藏动态及可采储量的一种预测模型[J].新疆石油地质,2008,29(5):644-647.
[20]常立言.油藏可采储量标定计算方法研究与应用软件设计[D].成都:西南石油大学,2015.
[21]王怒涛,陈强,张万博.水驱气藏废弃压力和地质储量算法修正[J].大庆石油地质与开发,2017,36(5):98-101.
[22]王继强,岳圣杰,宋瑞文,等.特高含水期油田水驱特征曲线优化研究[J].特种油气藏,2017,24(5):97-101.
[23]张枫,曹肖萌,易继贵,等.一种评价水驱特征曲线适用性的方法[J].天然气地球科学,2014,25(3):423-428.
[24]边海光,田作基,童晓光,等.伊拉克哈法亚油田可采储量增长因素和潜力分析[J].新疆石油地质,2014,35(4):486-490.
[25]薛睿.大庆外围油田单井控制可采储量研究[J].化学工程与装备,2017(1):86-89.
[26]许家峰,张金庆,安桂荣,等.广适水驱曲线求解新方法及应用[J].断块油气田,2017,24(1):43-55.
[27]陈元千,李剑,李云波,等.利用典型曲线拟合的递减常数预测油气藏的可采储量[J].中国海上油气,2015,27(5):49-54.
[28]徐瑞萍,于大川,赵永杰,等.利用水驱特征曲线计算油藏可采储量[J].内蒙古石油化工,2015,27(5):155-157.
[29]常立言,李雅琼.油藏可采储量计算方法及软件设计[J].断块油气田,2015,22(2):210-213.
[30]张金庆,安桂荣,许家峰.单井新增可采储量和单井控制储量的关系[J].中国海上油气,2015,27(1):53-56.
[31]陈元千,郝明强.Arps递减微分方程的推导及应用[J].断块油气田,2014,21(1):57-58.
[2]国家能源局.石油可采储量计算方法:SY/T 5367—2010[S].北京:石油工业出版社,2010.
[3]Cook T A.Procedure for calculating estimated ultimate recoveries of Bakken and Three Forks Formations horizontal wells in the Williston Basin[M].USGS:Open-File Report,2013.
[4]孔宪政.萨南开发区水驱递减率预测[J].大庆石油地质与开发,2014,33(4):84-86.
[5]王静伟,计秉玉,张文彪.基于多因素的油田可采储量不确定性分析[J].中国海上油气,2016,28(4):76-82.
[6]周鹏,陈明,王庆勇,等.预测油气田产量和可采储量的广义Weibull模型[J].大庆石油地质与开发,2017,36(5):93-97.
[7]邓森,王怒涛,孟令强,等.高含水期两种新型水驱特征曲线的建立与应用[J].大庆石油地质与开发,2017,36(4):58-63.
[8]王小林,于立君,李治平,等.特高含水期新型水驱特征曲线[J].大庆石油地质与开发,2015,34(6):54-56.
[9]丁静.单项措施增加可采储量计算[J].石油地质与工程,2009,23(2):58-59.
[10]邴绍献.油田单井可采储量定量预测模型[J].油气地质与采收率,2013,20(1):85-88.
[11]刘昌鸣.剩余经济可采储量及储量价值影响因素敏感程度分析[J].油气地质与采收率,2017,24(2):90-94.
[12]陈元千,李剑,李云波,等.利用典型曲线拟合的递减常数预测油气藏的可采储量[J].中国海上油气,2015,27(5):49-54.
[13]陈元千,唐玮.油气田剩余可采储量、剩余可采储采比和剩余可采程度的年度评价方法[J].石油学报,2016,37(6):796-801.
[14]朱圣举,张皎生,安小平.剩余可采储量采油速度与Arps递减规律关系[J].特种油气藏,2016,23(4):105-108.
[15]金勇,程诗胜.分段压裂水平井吞吐补充能量方式优化[J].大庆石油地质与开发,2016,35(5):92-95.
[16]杜保健,程林松,曹仁义,等.致密油藏体积压裂水平井开发效果[J].大庆石油地质与开发,2014,33(1):96-101.
[17]何蓉超.低渗透油藏可采储量计算方法研究[D].大庆:东北石油大学,2012.
[18]齐梅,侯建锋,蒋漫旗,等.可采储量标定的合理确定性探讨[J].油气地质与采收率,2017,14(6):62-65.
[19]童凯军,郑军,杨露,等.封闭油藏动态及可采储量的一种预测模型[J].新疆石油地质,2008,29(5):644-647.
[20]常立言.油藏可采储量标定计算方法研究与应用软件设计[D].成都:西南石油大学,2015.
[21]王怒涛,陈强,张万博.水驱气藏废弃压力和地质储量算法修正[J].大庆石油地质与开发,2017,36(5):98-101.
[22]王继强,岳圣杰,宋瑞文,等.特高含水期油田水驱特征曲线优化研究[J].特种油气藏,2017,24(5):97-101.
[23]张枫,曹肖萌,易继贵,等.一种评价水驱特征曲线适用性的方法[J].天然气地球科学,2014,25(3):423-428.
[24]边海光,田作基,童晓光,等.伊拉克哈法亚油田可采储量增长因素和潜力分析[J].新疆石油地质,2014,35(4):486-490.
[25]薛睿.大庆外围油田单井控制可采储量研究[J].化学工程与装备,2017(1):86-89.
[26]许家峰,张金庆,安桂荣,等.广适水驱曲线求解新方法及应用[J].断块油气田,2017,24(1):43-55.
[27]陈元千,李剑,李云波,等.利用典型曲线拟合的递减常数预测油气藏的可采储量[J].中国海上油气,2015,27(5):49-54.
[28]徐瑞萍,于大川,赵永杰,等.利用水驱特征曲线计算油藏可采储量[J].内蒙古石油化工,2015,27(5):155-157.
[29]常立言,李雅琼.油藏可采储量计算方法及软件设计[J].断块油气田,2015,22(2):210-213.
[30]张金庆,安桂荣,许家峰.单井新增可采储量和单井控制储量的关系[J].中国海上油气,2015,27(1):53-56.
[31]陈元千,郝明强.Arps递减微分方程的推导及应用[J].断块油气田,2014,21(1):57-58.