姬塬油田低产低效井多缝改造工艺技术研究
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摘要
长庆姬塬油田属于典型特低渗透油田,在储层改造过程中常规压裂很难达到预期的增产效果,对姬塬油田生产现状和储层特点的分析,通过增大油层泄油面积的多缝改造技术可以提高低产低效井改造效果。结合油井周围复杂多缝形成的机理与条件,通过多种工艺的复合联作,形成了针对低渗透油田的酸蚀多缝改造工艺、爆燃+暂堵多缝压裂工艺和定向射孔多缝压裂工艺三项多缝改造新技术。三项多缝改造工艺2015年在姬塬油田应用44口井,取得了较好的增产效果,实现了多缝改造目标。
Changqing Jiyuan oilfield is a typical low permeability oil reservoir,in the transformation process of conventional fracturing is difficult to achieve the desired effect,through analyzing the present situation and characteristics of the reservoir of Jiyuan oilfield production,to increase the reservoir drainage area of multi slit reconstruction technology can improve the effect of transforming low yielding wells.This paper based on the complex multi seam formation mechanism and conditions around the oil well, reunited with two technologies developed three new multiple crack fracturing technologies,the acid etching multiple crack fracturing,high energy gas fracturing & deflection fracturing technology and multiple crack based on oriented perforating fracturing technology.Three multiple crack fracturing technologies has been applied 44 wells in Jiyuan oilfield in 2015,achieved good production effect,and achieved the goal of multiple crack.
Changqing Jiyuan oilfield is a typical low permeability oil reservoir,in the transformation process of conventional fracturing is difficult to achieve the desired effect,through analyzing the present situation and characteristics of the reservoir of Jiyuan oilfield production,to increase the reservoir drainage area of multi slit reconstruction technology can improve the effect of transforming low yielding wells.This paper based on the complex multi seam formation mechanism and conditions around the oil well, reunited with two technologies developed three new multiple crack fracturing technologies,the acid etching multiple crack fracturing,high energy gas fracturing & deflection fracturing technology and multiple crack based on oriented perforating fracturing technology.Three multiple crack fracturing technologies has been applied 44 wells in Jiyuan oilfield in 2015,achieved good production effect,and achieved the goal of multiple crack.
引文
[1]吴奇,胥云,张守良,等.非常规油气藏体积改造技术核心理论与优化设计关键[J].石油学报,2014,35(4):706-714.
[2]G.Dozier.Fielder.Refracturing Works[J].oilfield Review,2003:38-53.
[3]Hemanta Mukherjee and B.D.Poe.Effect of Pressure Depletion on Fracture Geometry Evolution and Production Performance[C].SPE 65064,2000.
[4]王瑞飞,孙卫.鄂尔多斯盆地姬塬油田上三叠统延长组超低渗透砂岩储层微裂缝研究[J].地质评论,2009,55(3):444-448.
[5]梁晓伟,韩永林,王海红,等.鄂尔多斯盆地姬塬地区上三叠统延长组裂缝特征及其地质意义[J].岩性油气藏,2009,21(2):49-53.
[6]刘俊凯,呼苏娟,高银山,等.姬塬油田罗1区长8油层储层裂缝特征研究[J].石油化工应用,2012,31(3):66-69.
[7]霍斐斐,王海军,翁旭,等.转向重复压裂技术在陕北低渗透油田的应用[J].石油地质与工程,2011,25(4):95-97.
[8]贾红育,等.注水开发油田油层结垢机理及油层伤害[J].石油学报,2001,22(1):58-62.
[9]顾燕凌,樊红旗,刘运强,等.前置酸压裂工艺在低渗砂岩储层中的试验与评价[J].油气地面工程,2008,27(8):4-5.
[10]刘红现,赵立强,刘平礼,等.前置酸改善水力压裂效果机理分析[J].石油天然气学报,2008,30(1):332-334.
[11]李海涛,罗伟,姜雨省,等.复合射孔爆燃气体压裂裂缝起裂扩展研究[J].爆炸与冲击,2014,34(3):307-314.
[12]姜浒,陈勉,张广清,等.定向射孔对水力裂缝起裂与延伸的影响[J].岩石力学与工程学报,2009,28(7):1321-1326.
[13]张广清,陈勉,赵艳波.新井定向射孔转向压裂裂缝起裂与延伸机理研究[J].石油学报,2008,29(1):116-119.
[14]朱海燕,邓金根,刘书杰,等.定向射孔水力压裂起裂压力的预测模型[J].石油学报,2013,34(3):556-562.
[2]G.Dozier.Fielder.Refracturing Works[J].oilfield Review,2003:38-53.
[3]Hemanta Mukherjee and B.D.Poe.Effect of Pressure Depletion on Fracture Geometry Evolution and Production Performance[C].SPE 65064,2000.
[4]王瑞飞,孙卫.鄂尔多斯盆地姬塬油田上三叠统延长组超低渗透砂岩储层微裂缝研究[J].地质评论,2009,55(3):444-448.
[5]梁晓伟,韩永林,王海红,等.鄂尔多斯盆地姬塬地区上三叠统延长组裂缝特征及其地质意义[J].岩性油气藏,2009,21(2):49-53.
[6]刘俊凯,呼苏娟,高银山,等.姬塬油田罗1区长8油层储层裂缝特征研究[J].石油化工应用,2012,31(3):66-69.
[7]霍斐斐,王海军,翁旭,等.转向重复压裂技术在陕北低渗透油田的应用[J].石油地质与工程,2011,25(4):95-97.
[8]贾红育,等.注水开发油田油层结垢机理及油层伤害[J].石油学报,2001,22(1):58-62.
[9]顾燕凌,樊红旗,刘运强,等.前置酸压裂工艺在低渗砂岩储层中的试验与评价[J].油气地面工程,2008,27(8):4-5.
[10]刘红现,赵立强,刘平礼,等.前置酸改善水力压裂效果机理分析[J].石油天然气学报,2008,30(1):332-334.
[11]李海涛,罗伟,姜雨省,等.复合射孔爆燃气体压裂裂缝起裂扩展研究[J].爆炸与冲击,2014,34(3):307-314.
[12]姜浒,陈勉,张广清,等.定向射孔对水力裂缝起裂与延伸的影响[J].岩石力学与工程学报,2009,28(7):1321-1326.
[13]张广清,陈勉,赵艳波.新井定向射孔转向压裂裂缝起裂与延伸机理研究[J].石油学报,2008,29(1):116-119.
[14]朱海燕,邓金根,刘书杰,等.定向射孔水力压裂起裂压力的预测模型[J].石油学报,2013,34(3):556-562.