同井注采井封窜后产量预测方法研究
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摘要
油田进入中高含水期后,产出水的处理问题越来越突出,而同井注采技术可实现在井下对产出液进行油水分离。分离出的水经注入泵回注到油层,而含油较高的油水混合物经采出泵被举升至地面。但是一旦对产出层实施封窜作业,封窜层段的产液能力无法判断,进而无法给定注采层段的合理配产,而正常生产过程中生产管柱无法起出,进而很难通过测井的方法判定封窜之后产液能力,因此有必要根据油藏工程的方法对同井注采井封窜作业之后的产液能力进行理论研究。笔者根据现场实际情况对比3种计算方法,对其进行优选和优化。最终结合IPR曲线法,利用Matlab软件拟合沃格尔方程,计算同井注采井封窜之后产液量的变化规律。与实际产液量相比,该方法计算封窜后产液量与实际相比平均相对误差为26.36%。
After the oil field enters the middle and high water cut period,the treatment of the output water is becoming more and more prominent.The injection production technology in the same well can separate the oil from water of the output liquid in the underground.The separated water is injected into the reservoir through injection pump,and the oil-water mixture by high oil extraction pump is lifted to the ground.Once the output layer was plugging operated,sealing layer of liquid production capacity can not be judged as a result that reasonable injection production of layers can not be given,and the production string can not be out during the normal production process which makes it difficult to determine the sealing after the liquid producing capacity by logging method,so it is necessary to carry out the theoretical study on dysmenorrhea after injection well plugging operation of the liquid producing capacity by using reservoir engineering methods.According to the actual situation of the field,three methods of calculation were compared and optimized.Finally,the change law of the amount of liquid production after the injection and production well in the same well is calculated.Researchers fit the Vogel equation by combining the IPR curve method and using the Matlab software.The average relative error of the method is26.36%compared with the actual amount of liquid production.
After the oil field enters the middle and high water cut period,the treatment of the output water is becoming more and more prominent.The injection production technology in the same well can separate the oil from water of the output liquid in the underground.The separated water is injected into the reservoir through injection pump,and the oil-water mixture by high oil extraction pump is lifted to the ground.Once the output layer was plugging operated,sealing layer of liquid production capacity can not be judged as a result that reasonable injection production of layers can not be given,and the production string can not be out during the normal production process which makes it difficult to determine the sealing after the liquid producing capacity by logging method,so it is necessary to carry out the theoretical study on dysmenorrhea after injection well plugging operation of the liquid producing capacity by using reservoir engineering methods.According to the actual situation of the field,three methods of calculation were compared and optimized.Finally,the change law of the amount of liquid production after the injection and production well in the same well is calculated.Researchers fit the Vogel equation by combining the IPR curve method and using the Matlab software.The average relative error of the method is26.36%compared with the actual amount of liquid production.
引文
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[2]张继成,郑灵芸.同井注采井区隔层窜流界限研究[J].石油化工高等学校学报,2017,30(5):60-65,98.
[3]姜民政,段天玉,刘金堂,等.有杆泵同井注采系统技术应用及节点力学分析[J].石油机械,2017,45(7):97-100.
[4]李倩茹.S-1区同井注采试验与效果评价[D].大庆:东北石油大学,2017.
[5]张创,李杨勇,郑毅,等.同井注采在正285井区的应用前景[J].化工管理,2017(4):68-69.
[6]大庆油田有限责任公司采油工程研究院.同井注采技术[A].《采油工程文集》2015年第2辑[C].2015:1.
[7]王思淇.井下油水分离同井注采技术现场试验[J].油气田地面工程,2014,33(11):28-29.
[8]宋立志,曾玉斌,候志新.单管同井注采技术在南海西部油田的应用[J].内江科技,2012,33(6):102-103.
[9]李霄峰.同井注采井井底流体处理系统实验研究[D].大庆:东北石油大学,2012.
[10]杨魁.同井注采封隔器设计及管柱力学分析[D].北京:中国石油大学,2011.
[11]程心平,刘敏,罗昌华,等.海上油田同井注采技术开发与应用[J].石油矿场机械,2010,39(10):82-87.