压力衰竭油田全寿命期出砂风险预测研究
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摘要
有效准确的对压力衰竭油田进行出砂定量预测具有重要的意义。为此,根据油田油藏资料、测井数据、完井方式等参数,利用SAND_PRO软件计算得到不同地层压力及含水率条件下的临界生产压差,并结合油田单井生产动态,从而预测油田各井出砂可能性。以南海西部某油田为例,研究了该油田两口井主要油气层位在不同储层压力条件下的临界生产压差,预测全寿命期不同年份出砂可能性,并进行了出砂影响参数敏感性分析。结果表明,随着储层压力衰竭,地层含水率上升,临界生产压差呈减小趋势,出砂可能性增加,因此在油田开发中后期,必须考虑出砂风险。
Quantitative sand prediction of pressure depleted oilfield is the focus in the study of sand production. Therefore, based on the oil reservoir data, logging data, well completion methods and parameters, the critical production pressure under the condition of different formation pressure and water-cut is calculated with SAND_PRO software. Combining with field single well production performance, sanding possibility can be determined. Taking the example of one oilfield, we calculated the critical production pressure with different reservoir pressure in two wells' oil layers, and predicted the sanding possibilities in different years.Furthermore, we finished sensitivity analysis of sanding influence parameters. The results show that, with the depleting of pressure and rising of water-cut, the critical production pressure is decreasing and the sanding possibility is increasing. Therefore,we must consider the influence of sanding in the middle-late period of oilfield development.
Quantitative sand prediction of pressure depleted oilfield is the focus in the study of sand production. Therefore, based on the oil reservoir data, logging data, well completion methods and parameters, the critical production pressure under the condition of different formation pressure and water-cut is calculated with SAND_PRO software. Combining with field single well production performance, sanding possibility can be determined. Taking the example of one oilfield, we calculated the critical production pressure with different reservoir pressure in two wells' oil layers, and predicted the sanding possibilities in different years.Furthermore, we finished sensitivity analysis of sanding influence parameters. The results show that, with the depleting of pressure and rising of water-cut, the critical production pressure is decreasing and the sanding possibility is increasing. Therefore,we must consider the influence of sanding in the middle-late period of oilfield development.
引文
[1]彭作如,张俊斌,程仲,等.南海M深水气田完井关键技术分析[J].石油钻采工艺,2015,37(1):124-128.
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[5]李忠慧,楼一珊,幸雪松,等.渤中26-3油田储层出砂预测研究[J].石油天然气学报(江汉石油学院学报),2009,31(3):141-143.
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[14]李治军,张公社,聂飞朋.油层出砂预测[J].特种油气藏,2004,11(5):72-74.
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[16]董长银.油气井防砂理论与技术[M].东营:中国石油大学出版社,2012:27-29.
[17]汪伟英,郝斐,王勤田,等.临盘油田盘二区块油井出砂机理分析[J].江汉石油学院学报,2002,24(4):59-60.
[18]楼一珊,刘新锋,李忠慧.采油过程中压力衰减对临界生产压差的影响研究[J].钻采工艺,2006,29(3):40-41.
[19]Bailin Wu,Chee P.Tan,Ning Lu. Effect of water cut on sand production-an experimental study[J].SPE92715,2005.
[20]B. Wu,C. Tan.Effect of water-cut on sandstone strength and implications in sand production prediction[J].The 38th U.S.Symposium on Rock Mechanice(USRMS),July 7-10,Washington D.C.2011.
[2]李斌,黄焕阁,邓建明,等.简易防砂完井技术在渤海稠油油田的应用[J].石油钻采工艺,2007,29(3):25-28.
[3]周林然,卢渊,伊向艺.中国油井出砂预测技术现状[J].油气地质与采收率,2006,13(2):100-102.
[4]文敏,邓福成,刘书杰,等.渤海湾中部地区生产井出砂分析及实验研究[J].石油钻采工艺,2015,37(4):80-82.
[5]李忠慧,楼一珊,幸雪松,等.渤中26-3油田储层出砂预测研究[J].石油天然气学报(江汉石油学院学报),2009,31(3):141-143.
[6]曾春珉,余意,鹿传世,等.东方13-2油田储层出砂预测分析研究[J].科技创新导报,2014,(5):87-89.
[7]M.H.Hettema,J.S.Andrews,M.Blaasmo,et al. The relative importance of drawdown and depletion in sanding wells,predictive models compared with data from the statfjord field mm[J]. SPE97794,2006.
[8]林海,邓金根,胡连波,等.含水率对岩石强度及出砂影响研究[J].科学技术与工程,2013,13(13):3710-3713.
[9]何湘清,刘向君,罗平亚,等.地应力和油藏压力对弱胶结砂岩油藏出砂的影响[J].西南石油学院学报,2002,24(2):41-44.
[10]D.W.Rhett,R.Risnes. Predicting critical borehole pressure and critical reservoir pore pressure in pressure depleted and repressurized reservoirs[J].SPE78150,2002.
[11]郭云民,李健康,崔洁,等.高含水期油井出砂预测模型的研究与应用[J].油气地质与采收率,2005,12(3):58-61.
[12]刘正伟.海上疏松砂岩油藏出砂预测模型及应用[J].特种油气藏,2012,19(3):136-139.
[13]伍葳,林海,谭蕊,等.压力衰竭对临界生产压差的影响及油藏产能评价[J].科学技术与工程,2013,13(23):6825-6828.
[14]李治军,张公社,聂飞朋.油层出砂预测[J].特种油气藏,2004,11(5):72-74.
[15]何生厚,张琪.油气井防砂理论及其应用[M].北京:中国石化出版社,2003.
[16]董长银.油气井防砂理论与技术[M].东营:中国石油大学出版社,2012:27-29.
[17]汪伟英,郝斐,王勤田,等.临盘油田盘二区块油井出砂机理分析[J].江汉石油学院学报,2002,24(4):59-60.
[18]楼一珊,刘新锋,李忠慧.采油过程中压力衰减对临界生产压差的影响研究[J].钻采工艺,2006,29(3):40-41.
[19]Bailin Wu,Chee P.Tan,Ning Lu. Effect of water cut on sand production-an experimental study[J].SPE92715,2005.
[20]B. Wu,C. Tan.Effect of water-cut on sandstone strength and implications in sand production prediction[J].The 38th U.S.Symposium on Rock Mechanice(USRMS),July 7-10,Washington D.C.2011.