基于岩石力学及压裂施工参数计算的复杂缝网建模
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摘要
传统的人工裂缝建模方法未考虑力学及施工规模等因素,模型并不能准确表征地下缝网形态。为建立更加可靠的缝网模型,提出了基于岩石力学及压裂施工参数计算的复杂缝网建模方法。在岩石力学建模及压前地应力场模拟的基础上,对泵压、排量和加砂量等压裂施工参数曲线进行拟合计算,模拟得到复杂裂缝扩展过程和最终缝网模型。实际模拟检验表明,基于该模型的生产历史拟合符合率较高,较好体现了缝网压裂后单井产量递减特征及渗流规律,可为压裂参数设计、后期注水政策调整等提供可靠依据。
The traditional artificial fracture modeling approaches do not consider the rock mechanics,the fracturing scale and the other factors,so the models can not accurately characterize the shapes of the underground fracture networks. In order to establish a more reliable fracture network model,a complex network modeling method was proposed based on the rock mechanics and calculation of the fracturing operation parameters. On the bases of the modeling of the rock mechanics and the simulation of pre-fracturing geo-stresses,the matching and calculation were conducted for the fracturing operation parameter curves including the pump pressure,discharge rate and sand added amount and so on,the complex fracture propagation process and the final complex network model were simulated are established. The actual simulation and inspection show that the model with much higher accordance rate of the history matching well reflects the decline characteristics for the individual well production and seepage laws,so it can provide the reliable evidences for the fracturing parameter design,the adjustments of the water injection policy in the late period and something else.
The traditional artificial fracture modeling approaches do not consider the rock mechanics,the fracturing scale and the other factors,so the models can not accurately characterize the shapes of the underground fracture networks. In order to establish a more reliable fracture network model,a complex network modeling method was proposed based on the rock mechanics and calculation of the fracturing operation parameters. On the bases of the modeling of the rock mechanics and the simulation of pre-fracturing geo-stresses,the matching and calculation were conducted for the fracturing operation parameter curves including the pump pressure,discharge rate and sand added amount and so on,the complex fracture propagation process and the final complex network model were simulated are established. The actual simulation and inspection show that the model with much higher accordance rate of the history matching well reflects the decline characteristics for the individual well production and seepage laws,so it can provide the reliable evidences for the fracturing parameter design,the adjustments of the water injection policy in the late period and something else.
引文
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[10]刘广峰,李帅,顾岱鸿,等.离散裂缝网络模型在体积压裂裂缝网络模拟上的应用[J].大庆石油地质与开发,2014,33(6):95-99.
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[13]闫治涛,杨斌,李行船,等.分层地应力描述技术及应用[J].油气地质与采收率,2004,11(1):63-66.
[14]付志方,陈志海,高君,等. PCO低渗透砂岩油藏裂缝特征综合描述[J].大庆石油地质与开发,2017,36(2):129-134.
[15]骆杨,赵彦超,陈红汉,等.构造应力—流体压力耦合作用下的裂缝发育特征:以渤海湾盆地东濮凹陷柳屯洼陷裂缝性泥页岩“油藏”为例[J].石油勘探与开发,2015,42(2):177-185.
[16]徐芳,邢玉忠,张兴阳,等.力学地层单元对裂缝发育的控制作用[J].大庆石油地质与开发,2015,34(4):44-50.
[17] Gu Hongren,Weng Xiaowei. Criterion for fractures crossing frictional interfaces at non-orthogonal angles[C]//44th US rock mechanics symposium and 5th US-Canada rock mechanics symposium. Salt Lake City, Utah:American Rock Mechanics Association,2010.
[18]孙璐,刘月田,冯月丽,等.致密油气藏裂缝介质压力敏感分析与计算方法[J].大庆石油地质与开发,2017,36(2):171-174.
[19]陈勉,周健,金衍,等.随机裂缝性储层压裂特征实验研究[J].石油学报,2008,29(3):431-434.
[20]周健,陈勉,金衍,等.多裂缝储层水力裂缝扩展机理试验[J].中国石油大学学报(自然科学版),2008,32(4):51-54.
[21]程万,金衍,陈勉,等.三维空间中水力裂缝穿透天然裂缝的判别准则[J].石油勘探与开发,2014,41(3):336-340.
[22]彭珏.考虑裂缝角度与干扰的压裂水平井产能预测模型[J].大庆石油地质与开发,2015,34(4):108-113.
[23]包劲青,刘合,张广明,等.分段压裂裂缝扩展规律及其对导流能力的影响[J].石油勘探与开发,2017,44(2):281-288.
[24]Chuprakov D S,Akulich A V,Siebrits E,et al. Hydraulic fracture propagation in a naturally fractured reservoir[J]. SPE Production&Operotions,2011,26(1):88-97.
[25]温庆志,刘华,李海鹏,等.油气井压裂微地震裂缝监测技术研究与应用[J].特种油气藏,2015,22(5):141-144.
[26]叶里卡提·瓦黑提,戴俊生,王珂,等.大庆长垣X71区块扶余油层现今地应力研究及应用[J].大庆石油地质与开发,2015,34(4):38-43.
[27]潘毅,王攀荣,宋道万,等.复杂裂缝网络系统油水相渗曲线特征实验研究[J].西南石油大学学报(自然科学版),2016,38(4):110-116.
[28]谷建伟,于秀玲,马宁,等.考虑应力敏感的致密气藏水平井产能计算方法[J].大庆石油地质与开发,2016,35(6):57-62.
[2]史晓东.致密油直井多层缝网压裂产能预测方法[J].特种油气藏,2017,24(1):124-127.
[3]翁定为,雷群,胥云,等.缝网压裂技术及其现场应用[J].石油学报,2011,32(2):280-284.
[4]唐明明,张金亮.基于随机扩展方法的致密油储层裂缝建模研究[J].西南石油大学学报(自然科学版),2017,39(1):63-70.
[5]周祥,张士诚,邹雨时,等.致密油藏水平井体积压裂裂缝扩展及产能模拟[J].特种油气藏,2015,30(4):53-58.
[6]何伟,马世忠,袁江如,等.致密油储层不同尺度、多重介质建模方法研究:以吉木萨尔凹陷芦草沟组上甜点为例[J].地球物理学进展,2017,32(2):618-625.
[7]潘林华,程礼军,陆朝晖,等.页岩储层水力压裂裂缝扩展模拟进展[J].特种油气藏,2014,21(4):1-6.
[8]胡超洋,艾池,王凤娇,等.基于分形方法的水力压裂分支裂缝分布模拟[J].油气地质与采收率,2016,23(5):122-126.
[9]杜书恒,师永民,关平.松辽盆地扶余低渗非均质储层压裂缝定量预测[J].地学前缘,2017,24(6):381-389.
[10]刘广峰,李帅,顾岱鸿,等.离散裂缝网络模型在体积压裂裂缝网络模拟上的应用[J].大庆石油地质与开发,2014,33(6):95-99.
[11]叶静,胡永全,任岚,等.裂缝性地层水力裂缝复杂形态延伸分析[J].大庆石油地质与开发,2013,32(5):92-97.
[12]冯建伟,戴俊生,马占荣,等.低渗透砂岩裂缝参数与应力场关系理论模型[J].石油学报,2011,32(4):664-671.
[13]闫治涛,杨斌,李行船,等.分层地应力描述技术及应用[J].油气地质与采收率,2004,11(1):63-66.
[14]付志方,陈志海,高君,等. PCO低渗透砂岩油藏裂缝特征综合描述[J].大庆石油地质与开发,2017,36(2):129-134.
[15]骆杨,赵彦超,陈红汉,等.构造应力—流体压力耦合作用下的裂缝发育特征:以渤海湾盆地东濮凹陷柳屯洼陷裂缝性泥页岩“油藏”为例[J].石油勘探与开发,2015,42(2):177-185.
[16]徐芳,邢玉忠,张兴阳,等.力学地层单元对裂缝发育的控制作用[J].大庆石油地质与开发,2015,34(4):44-50.
[17] Gu Hongren,Weng Xiaowei. Criterion for fractures crossing frictional interfaces at non-orthogonal angles[C]//44th US rock mechanics symposium and 5th US-Canada rock mechanics symposium. Salt Lake City, Utah:American Rock Mechanics Association,2010.
[18]孙璐,刘月田,冯月丽,等.致密油气藏裂缝介质压力敏感分析与计算方法[J].大庆石油地质与开发,2017,36(2):171-174.
[19]陈勉,周健,金衍,等.随机裂缝性储层压裂特征实验研究[J].石油学报,2008,29(3):431-434.
[20]周健,陈勉,金衍,等.多裂缝储层水力裂缝扩展机理试验[J].中国石油大学学报(自然科学版),2008,32(4):51-54.
[21]程万,金衍,陈勉,等.三维空间中水力裂缝穿透天然裂缝的判别准则[J].石油勘探与开发,2014,41(3):336-340.
[22]彭珏.考虑裂缝角度与干扰的压裂水平井产能预测模型[J].大庆石油地质与开发,2015,34(4):108-113.
[23]包劲青,刘合,张广明,等.分段压裂裂缝扩展规律及其对导流能力的影响[J].石油勘探与开发,2017,44(2):281-288.
[24]Chuprakov D S,Akulich A V,Siebrits E,et al. Hydraulic fracture propagation in a naturally fractured reservoir[J]. SPE Production&Operotions,2011,26(1):88-97.
[25]温庆志,刘华,李海鹏,等.油气井压裂微地震裂缝监测技术研究与应用[J].特种油气藏,2015,22(5):141-144.
[26]叶里卡提·瓦黑提,戴俊生,王珂,等.大庆长垣X71区块扶余油层现今地应力研究及应用[J].大庆石油地质与开发,2015,34(4):38-43.
[27]潘毅,王攀荣,宋道万,等.复杂裂缝网络系统油水相渗曲线特征实验研究[J].西南石油大学学报(自然科学版),2016,38(4):110-116.
[28]谷建伟,于秀玲,马宁,等.考虑应力敏感的致密气藏水平井产能计算方法[J].大庆石油地质与开发,2016,35(6):57-62.