Productivity Calculation Models and Stimulation Ratio Analysis for Explosive Fracturing Wells
-
摘要: 为了进一步提高爆燃压裂工艺设计与效果预测水平及工程应用效果,基于爆燃压裂原理和油藏渗流理论,利用保角变换方法,建立了爆燃压裂油井产能计算模型(包括流体从油藏边界渗流到爆燃裂缝的渗流外阻模型,和流体在裂缝中渗流入井的渗流内阻模型)并编制了计算软件。以低渗油藏油井F31-10井为例,计算、分析了油藏参数和爆燃裂缝参数对爆燃压裂油井增产效果的影响规律。研究结果表明:爆燃裂缝长度、裂缝数量和爆燃裂缝导流能力对油井增产效果有影响,影响程度由大到小依次是爆燃裂缝长度、裂缝数量和爆燃裂缝导流能力;在爆燃裂缝长度和裂缝数量一定的条件下,存在一个最佳的爆燃裂缝导流能力;爆燃压裂后油井增产倍数为1.365~2.115,且增加爆燃裂缝长度和爆燃裂缝数量比增加爆燃裂缝无因次导流能力对增产更有利。Abstract: In order to improve the design and prediction level of explosive fracturing and enhance the effect of engineering application,the well productivity models for explosive fracturing were established with conformal transformation method,based on the principle of explosive fracturing and the reservoir seepage theory,including outside resistance model of fluid flowing from reservoir boundary to exploding fractures and internal resistance model of fluid flowing from fractures to well-bore.The calculation software is programmed by which the effects of reservoir parameters and fracture parameters on well stimulation are analyzed,taking Well F31-10 as an example.Results show that length,number and conductivity of explosive fractures could affect the stimulation effect from high to low degree.Under the condition of given fracture length and numbers,there will be optimum conductivity of explosive fracture,the production of Well F31-10 was increased to 1.365-2.115 times by explosive fracturing,and increasing fracture length and number is more favorable for stimulation than increasing dimensionless flow conductivity of fractures.
-
-
[1] 陈德春,吴晓东,潘志华,等.爆燃压裂油井产能电模拟实验评价[J].石油钻探技术,2011,39(6):73-77. Chen Dechun,Wu Xiaodong,Pan Zhihua,et al.Evaluation of exploding fracture wells productivity using electric analog experiment[J].Petroleum Drilling Techniques,2011,39(6):73-77. [2] 陈德春,吴晓东,潘志华.爆燃压裂油井产能热稳态数值模拟评价[J].油气地质与采收率,2012,19(1):82-84. Chen Dechun,Wu Xiaodong,Pan Zhihua.Evaluation of exploding fracture wells productivity using thermal stable numerical simulation[J].Petroleum Geology and Recovery Efficiency,2012,19(1):82-84. [3] 李文魁.高能气体压裂技术在油气资源开发中的应用研究[J].西安工程学院学报,2000,22(2):60-62. Li Wenkui.Researching and application on high energy gas fracturing technique used in the development of oil/gas resources[J].Journal of Xi’an Engineering University,2000,22(2):60-62. [4] 魏斌,黎荣剑,陈平,等.高能气体压裂在长庆油田的应用及效果分析[J].低渗透油气田,2000,5(2):63-67. Wei Bin,Li Rongjian,Chen Ping,et al.Application and result analysis of high energy gas fracturing technology to developing Changqing Oilfiled[J].Low Permeability Oil Gas Fields,2000,5(2):63-67. [5] 薄其众,葛刚,马功联.高能气体压裂技术与应用[J].海洋石油,2003,23(3):69-71. Bo Qizhong,Ge Gang,Ma Gonglian.High energy gas fracture technology and application[J].Offshore Oil,2003,23(3):69-71. [6] Yang D W,Risnes R.Experimental study on fracture initiation by pressure pulses[R].SPE 63035,2000.
[7] 陈德春,孟红霞,张琪,等.水力裂缝层内爆燃压裂油井产能计算模型[J].石油大学学报:自然科学版,2005,29(6):69-81. Chen Dechun,Meng Hongxia,Zhang Qi,et al.Productivity calculation model of the hydraulic fracture wells with exploding in fracture front[J].Journal of the University of Petroleum,China:Edition of Natural Science,2005,29(6):69-81. [8] 张琪.采油工程原理与设计[M].东营:石油大学出版社,2003:4-281. Zhang Qi.Principle and design of production engineering[M].Dongying:University of Petroleum Press,2003:4-281. [9] 张建国,雷光伦,张艳玉.油气层渗流力学[M].东营:石油大学出版社,2004:77-91. Zhang Jianguo,Lei Guanglun,Zhang Yanyu.Oil-gas percolation mechanics[M].Dongying:University of Petroleum Press,2004:77-91. [10] 汪永利,蒋廷学,曾斌.气井压裂后稳态产能的计算[J].石油学报,2003,24(4):65-68. Wang Yongli,Jiang Tingxue,Zeng Bin.Productivity performances of hydraulically fractured gas well[J].Acta Petrolei Sinica,2003,24(4):65-68. [11] 张伟东,杨铁军,蒋廷学,等.保角变换法用于计算压裂井产能[J].油气地质与采收率,2003,10(增刊1):81-82. Zhang Weidong,Yang Tiejun,Jiang Tingxue,et al.Calculation of fracture wells productivity by conformal transformation[J].Petroleum Geology and Recovery Efficiency,2003,10(supplement 1):81-82. [12] 蒋廷学,单文文,杨艳丽.垂直裂缝井稳态产能的计算[J].石油勘探与开发,2001,28(2):61-63. Jiang Tingxue,Shan Wenwen,Yang Yanli.The calculation of stable production capability of vertically fractured well[J].Petroleum Exploration and Development,2001,28(2):61-63. [13] 费祥历,刘奋,马铭福.高等数学[M].东营:石油大学出版社,2000:135-136. Fei Xiangli,Liu Fen,Ma Mingfu.Higher mathematics[M].Dongying:University of Petroleum Press,2000:135-136.
计量
- 文章访问数: 3017
- HTML全文浏览量: 61
- PDF下载量: 3279
下载:
