玉北地区钻井液技术
|
摘要
针对玉北地区古近系膏岩层易蠕变缩径、二叠系火成岩地层易垮塌掉块、奥陶系灰岩地层易漏,导致的钻井周期长、机械钻速低、复杂情况多等问题,优选了适合各开次的钻井液体系。一开选用膨润土聚合物体系,利用其高膨润土含量解决地表流沙层的井壁稳定与井眼清洁问题;二开选用KCl聚磺钻井液,通过强化钻井液的抑制封堵能力与抗污染能力解决了因泥岩段水化膨胀、砂岩段形成虚泥饼造成的阻卡问题,实现了井壁稳定;三开选用KCl聚磺防塌钻井液,解决了高密度钻井液的抗污染问题,实现了深部地层的快速钻进;四开选用低固相聚磺钻井液,大幅度提高了深部地层的钻进速度。
Yubei area lies on the southwest of Taklimakan desert in Tarim basin. Because of the creeping and hole shrinkage gypsum bed in Gujin,and the easily collapsing and caving-in igneous rocks in Permian,as well as the leakiness Ordovician limestone,the drilling speed is low and therefore the drilling cycle is quite long. In order to solve these problems,this article optimizes the drilling fluid system suitable for different phases based on lots of experiments and field applications. For the first section,the bentonite polymer system is applied to ensure the wellbore stability of surface float land and to clean the wellbore. For the second section,KCl polysulfonate drilling fluid is used to solve the stuck problem caused by the hydrate expansion in the mudstone section and the pseudo cake in sandstone section in order to ensure the stability of the wellbore. For the third section,the KCl polysulfonate anti-sloughing drilling fluid is selected to solve the antipollution problem of high density drilling fluid so as to realize the fast drilling in deep formation. For the forth section,the low solid polysulfonate drilling fluid is applied to speed up the drilling velocity in deep formation.
Yubei area lies on the southwest of Taklimakan desert in Tarim basin. Because of the creeping and hole shrinkage gypsum bed in Gujin,and the easily collapsing and caving-in igneous rocks in Permian,as well as the leakiness Ordovician limestone,the drilling speed is low and therefore the drilling cycle is quite long. In order to solve these problems,this article optimizes the drilling fluid system suitable for different phases based on lots of experiments and field applications. For the first section,the bentonite polymer system is applied to ensure the wellbore stability of surface float land and to clean the wellbore. For the second section,KCl polysulfonate drilling fluid is used to solve the stuck problem caused by the hydrate expansion in the mudstone section and the pseudo cake in sandstone section in order to ensure the stability of the wellbore. For the third section,the KCl polysulfonate anti-sloughing drilling fluid is selected to solve the antipollution problem of high density drilling fluid so as to realize the fast drilling in deep formation. For the forth section,the low solid polysulfonate drilling fluid is applied to speed up the drilling velocity in deep formation.
引文
[1]林集,廖刚,李勇波.氯化钾/聚合醇钻井液体系的研究及性能评价[J].西南石油大学学报,2007(2):82-85.
[2]邱正松,韩祝国,徐加放,等.KCl/聚合醇协同防塌作用机理研究[J].钻井液与完井液,2006,23(2):1-3.
[3]艾贵成,王宝成,李佳军.深井小井眼钻井液技术[J].石油钻采工艺,2007,29(3):86-88.
[4]王亮,吴正权,曾建,等.聚合醇在钻井液中浊点变化规律研究及应用[J].钻采工艺,2009,32(6):85-87.
[5]梁大川,罗平亚,刘向君,等.钻井液处理剂及体系对泥页岩坍塌压力的影响研究[J].钻采工艺,2011,34(2):83-85.
[6]任皓.国外抗高温钻井液及添加剂综述[J].钻采工艺,1994(1):34-38.
[7]易浩,白彬珍,赵志国,等.玉北地区深井快速钻井技术[J].石油钻探技术,2011,39(6):27-30.
[8]郭峰,郭岭.柴达木盆地西部古近系湖相风暴岩[J].新疆地质,2011,29(2):125-129.
[9]刘传虎,王学忠.构造—层序分析模型地震响应特征与应用[J].石油地球物理勘探,2011,46(6):938-943.
[2]邱正松,韩祝国,徐加放,等.KCl/聚合醇协同防塌作用机理研究[J].钻井液与完井液,2006,23(2):1-3.
[3]艾贵成,王宝成,李佳军.深井小井眼钻井液技术[J].石油钻采工艺,2007,29(3):86-88.
[4]王亮,吴正权,曾建,等.聚合醇在钻井液中浊点变化规律研究及应用[J].钻采工艺,2009,32(6):85-87.
[5]梁大川,罗平亚,刘向君,等.钻井液处理剂及体系对泥页岩坍塌压力的影响研究[J].钻采工艺,2011,34(2):83-85.
[6]任皓.国外抗高温钻井液及添加剂综述[J].钻采工艺,1994(1):34-38.
[7]易浩,白彬珍,赵志国,等.玉北地区深井快速钻井技术[J].石油钻探技术,2011,39(6):27-30.
[8]郭峰,郭岭.柴达木盆地西部古近系湖相风暴岩[J].新疆地质,2011,29(2):125-129.
[9]刘传虎,王学忠.构造—层序分析模型地震响应特征与应用[J].石油地球物理勘探,2011,46(6):938-943.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心