高效桥塞堵漏技术在川西马井构造的应用
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摘要
川西马井构造上部地层裂隙发育,地层承压能力低,布井密集,钻井时易与邻井气层窜通,发生漏失,甚至造成复杂型井漏。虽然常规桥塞堵漏亦能堵漏成功,但由于地层承压能力低而易发生复漏和反吐,堵漏一次成功率低。为提高堵漏效果和一次成功率,在原有堵漏技术的基础上,引入高效堵漏剂,通过室内配方优化及施工工艺完善,形成了高效桥塞堵漏技术。现场试验表明该技术堵漏一次成功率高,堵漏效果良好,为低承压力地层、易漏失层以及易与邻井气层窜通等造成的复杂型井漏提供了新的堵漏思路,对解决其它复杂井漏也具有一定的指导意义。
Because of fracture development in upper layer of Majing structure in Western Sichuan with low formation bearing capacity and dense well spacing,channeling with adjacent wells is easily occur in drilling process and lost circulation is often encountered,even leading to complex loss circulation.Although conventional bridge plug can be effectively used,the repeated leakage and flowing backward frequently occur for the poor formation bearing capacity with low one-time success rate.In order to improve plugging effect and one-time success rate,on the basis of the original plugging technology,efficient plugging agent was introduced,through the formula optimization in laboratory and construction process improvement,efficient bridge plug technology has been formed.The field test shows that the technology has high one-time success rate and good plugging effect,which provides a new method to solve the above mentioned complex lost circulation and has certain guiding significance for dealing with complex lost circulation.
Because of fracture development in upper layer of Majing structure in Western Sichuan with low formation bearing capacity and dense well spacing,channeling with adjacent wells is easily occur in drilling process and lost circulation is often encountered,even leading to complex loss circulation.Although conventional bridge plug can be effectively used,the repeated leakage and flowing backward frequently occur for the poor formation bearing capacity with low one-time success rate.In order to improve plugging effect and one-time success rate,on the basis of the original plugging technology,efficient plugging agent was introduced,through the formula optimization in laboratory and construction process improvement,efficient bridge plug technology has been formed.The field test shows that the technology has high one-time success rate and good plugging effect,which provides a new method to solve the above mentioned complex lost circulation and has certain guiding significance for dealing with complex lost circulation.
引文
[1]张歧安,徐先国,董维,等.延迟膨胀颗粒堵漏剂的研究与应用[J].钻井液与完井液,2006,23(2):21-24.
[2]李广国,范落成.托普台区块二叠系堵漏技术探讨[J].内蒙古石油化工,2013,39(8):116-118.
[3]陈曾伟,刘四海,林永学,等.塔河油田顺西2井二叠系火成岩裂缝性地层堵漏技术[J].钻井液与完井液,2014,31(1):40-43.
[4]刘金华,刘四海,陈小锋,等.承压堵漏技术研究及其应用[J].断块油气田,2011,18(1):116-118,125.
[5]Gelan E Loeppke,David A Glowka and Elton K Wright.Design and evaluation of lost-circulation materials for severe environments[J],Journal of Petroleum Technology.1990,42(3):328-337.
[6]陶梦蛟.承压堵漏技术在阿雷斯油田的应用[J].化工管理,2015,(18):94-94.
[7]孙明光.塔河油田盐上裸眼承压堵漏技术[J].石油钻采工艺,2007,29(2):91-94.
[8]王中华.复杂漏失地层堵漏技术现状及发展方向[J].中外能源,2014,19(1):39-48.
[2]李广国,范落成.托普台区块二叠系堵漏技术探讨[J].内蒙古石油化工,2013,39(8):116-118.
[3]陈曾伟,刘四海,林永学,等.塔河油田顺西2井二叠系火成岩裂缝性地层堵漏技术[J].钻井液与完井液,2014,31(1):40-43.
[4]刘金华,刘四海,陈小锋,等.承压堵漏技术研究及其应用[J].断块油气田,2011,18(1):116-118,125.
[5]Gelan E Loeppke,David A Glowka and Elton K Wright.Design and evaluation of lost-circulation materials for severe environments[J],Journal of Petroleum Technology.1990,42(3):328-337.
[6]陶梦蛟.承压堵漏技术在阿雷斯油田的应用[J].化工管理,2015,(18):94-94.
[7]孙明光.塔河油田盐上裸眼承压堵漏技术[J].石油钻采工艺,2007,29(2):91-94.
[8]王中华.复杂漏失地层堵漏技术现状及发展方向[J].中外能源,2014,19(1):39-48.