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桥塞堵漏技术以其安全、经济和操作工艺简单而备受好评,并被现场普遍使用。但因地层漏缝开口尺寸无法准确掌握,只能凭现场有限的资料分析和经验制订堵漏方案,经常出现一堵就止漏和一循环又复漏的问题,造成人力、物力、财力的巨大损失,探索新的堵漏方法已十分必要。从分析研究桥塞堵漏技术的机理和缺陷入手,研制了一种商品名为HHH的高失水堵漏剂。并在室内评价了该堵漏技术对不同开口尺寸的漏缝的堵漏效果,将该技术应用于处理剑门1井的喷漏同层抢险和LG10井的恶性井漏,堵漏施工中均取得良好效果。现场应用结果表明,该堵漏技术具有如下特点:堵漏剂固相含量高(浓度30～40),粒径小(微米级)。因此,容易进入各种形状的致漏裂缝空间,对大、中、小漏均适宜;堵漏剂短时间全失水,滤饼致密、承压高及酸溶率高;堵漏剂密度在1.15～2.40g/cm3范围内可调,可泵性及悬浮稳定性均良好;采用清水配制,使用简单,施工时间短;堵漏成功率高、复漏率低。
Plug plugging technology for its safety, economy and operation of simple and highly acclaimed, and the widespread use of the scene. However, due to the size of stratum gap opening can not be accurately grasped, only by the limited data analysis and experience of the scene to develop a plugging program, often a block on the leakage and a recurrence and leakage problems, resulting in a huge human, material and financial resources Loss, to explore new methods of plugging has been very necessary. Starting from the analysis of the mechanism and defect of plugging plugging technology, a kind of high water loss plugging agent named HHH was developed. The plugging effect of the plugging technology on the leakage of different opening sizes was evaluated indoor. The technology was applied to deal with the leakage and leakage of the same layer in Jianmen 1 well and the vicious well leakage in the LG10 well, both in the plugging construction Achieve good results. Field application results show that the plugging technology has the following characteristics: Sealing agent solid content (concentration 30 ~ 40), small particle size (micron). Therefore, easy to enter the various forms of leakage of cracks in the space, suitable for large, medium and small leaks; plugging agent all water shortages, filter cake dense, high pressure and high acid-soluble rate; plugging agent density 1.15 ~ 2.40g / cm3 range adjustable, pumpability and suspension stability are good; prepared with water, easy to use, construction time is short; high rate of plugging success, low rate of leakage.