利用机械工具改善大斜度井岩屑床问题的研究
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摘要
渤海A区块已钻井达上百口,目前正在进行新一批的钻井作业,针对前期在大斜度井、水平井井段在钻井过程中,岩屑易堆积形成岩屑床,导致钻井过程效率低下、倒划眼频繁憋压、蹩扭矩等问题,通过引入机械式岩屑床清除工具,利用其机械挖掘作用和压力吸附、机械传动和循环推动作用,将堆积岩屑循环带离下井壁,随之循环带出井筒。文章以大斜度井段达到1 400 m左右的某37井为例,从该工具的加放、使用前后的钻井参数(泵压、扭矩等)对比、钻后倒划眼效果对比等方面分析说明岩屑床清除工具的效果和意义。
More than 100 wells have been drilled at Bohai A block. And a new batch of wells is currently being drilled.When drilling the previous high angle wells and horizontal wells,cuttings bed are often observed while result in low drilling efficiency and frequent load and torque buildup on tools when backreaming. A mechanical tool is introduced to take the cuttings away from the down hole wellbore and circulate the cuttings out of the hole by means of mechanical digging,pressure adsorption,mechanical transmission and cyclic pushing. In this paper,Well X37( highly deviated section about 1 400 m long) is taken as an example to describe the tool assembly,the drilling parameters before and after the tool used,the back reaming results before and after,and etc..
More than 100 wells have been drilled at Bohai A block. And a new batch of wells is currently being drilled.When drilling the previous high angle wells and horizontal wells,cuttings bed are often observed while result in low drilling efficiency and frequent load and torque buildup on tools when backreaming. A mechanical tool is introduced to take the cuttings away from the down hole wellbore and circulate the cuttings out of the hole by means of mechanical digging,pressure adsorption,mechanical transmission and cyclic pushing. In this paper,Well X37( highly deviated section about 1 400 m long) is taken as an example to describe the tool assembly,the drilling parameters before and after the tool used,the back reaming results before and after,and etc..
引文
[1]杨晓光,柳贡慧,李军,等.气体钻水平井段环空岩屑床分布规律研究[J].钻采工艺,2014,37(2):5-7.
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[10]汪露,王鹏,王伟志,等.对塔河油田井眼净化和井壁稳定的几点认识[J].钻采工艺,2018,41(5):116-119.
[11]和鹏飞,侯冠中,朱培,等.海上914. 4 mm井槽弃井再利用实现单筒双井技术[J].探矿工程(岩土钻掘工程),2016,43(3):45-48.
[12]张好林,李根生,王伟,等.水平井井筒清洁临界流速简化模型[J].钻采工艺,2014,37(4):5-8.
[2]孙晓峰,纪国栋,王克林,等.大斜度井偏心环空钻柱旋转对岩屑运移的影响[J].特种油气藏,2015,22(6):133-136.
[3]和鹏飞.辽东湾某油田大斜度井清除岩屑床技术的探讨[J].探矿工程(岩土钻掘工程),2014(6):35-37.
[4]谭军,熊继有,董学成,等.基于旋转射流的侧向水力工具在大位移井中的应用[J].钻采工艺,2012,35(6):1-3.
[5]孙晓峰,闫铁,崔世铭,等.钻杆旋转影响大斜度井段岩屑分布的数值模拟[J].断块油气田,2014,21(1):92-96.
[6]曹博,马淼,苟旭东,等.地层岩屑支撑及封隔系统研究[J].石油机械,2018,46(3):17-21.
[7]孙晓峰,闫铁,崔世铭,等.钻杆旋转影响大斜度井段岩屑分布的数值模拟[J].断块油气田,2014,21(1):92-96.
[8]佟德水.辽河边台潜山双分支鱼骨水平井钻完井技术[J].钻采工艺,2015,38(6):18-20.
[9]房亮,李孝伟,狄勤丰.岩屑床清除钻杆流场的数值模拟与分析[J].水动力学研究与进展,2014,29(3):25-27.
[10]汪露,王鹏,王伟志,等.对塔河油田井眼净化和井壁稳定的几点认识[J].钻采工艺,2018,41(5):116-119.
[11]和鹏飞,侯冠中,朱培,等.海上914. 4 mm井槽弃井再利用实现单筒双井技术[J].探矿工程(岩土钻掘工程),2016,43(3):45-48.
[12]张好林,李根生,王伟,等.水平井井筒清洁临界流速简化模型[J].钻采工艺,2014,37(4):5-8.