川渝地区塑性堵漏技术的室内研究  

Laboratory Study on Plastic LCM for Use in Chuan-Yu Area

作　　者：万伟[1] 李茂森[1] 黄平[1] 罗宇峰[1] 秦宗伦[1] 

机构地区：[1]川庆钻探工程有限公司钻井液技术服务公司

出　　处：《钻井液与完井液》2014年第5期52-55,99,共4页Drilling Fluid & Completion Fluid

摘　　要：川渝地区因恶性井漏造成的经济损失占井漏造成的总经济损失的50%以上。针对川渝地区恶性漏失情况下水泥浆堵漏的技术难点,根据井漏发生的基本原理,提出了塑性堵漏技术,该堵漏浆通过胶结剂、减轻剂、流型调节剂、增塑剂以及调凝剂等处理剂的共同作用,具有密度可调、塑性蠕变、有一定的抗压强度、耐久等特性,使该堵漏浆产生"失重",漏失驱动力趋于消失或真正消失,从根本上解决了井漏问题。室内实验表明,该塑性堵漏浆对恶性井漏具有很好的堵漏效果,室内堵漏成功率达100%,且与钻井液有很好的相容性,具有较好的应用前景。形成了一套塑性堵漏浆现场配制的施工工艺。Cost spent in dealing with severe mud losses in Chuan-Yu area(Sichuan and Chongqing) had reached 50% of the total cost spent in dealing all kinds of mud losses in this area. A plastic lost circulation material(LCM) was developed with binding agent, light weight agent, rheological controller, plasticizing agent and gelling agent to control mud losses in this area. This LCM has these characteristics: adjustable density, plastic creeping, a certain level of resistance to compression, and can stand for a long time. The 'loss of gravity' of the LCM column minimized the drive force for mud losses. In laboratory study, this LCM was 100% successful in mud loss control, and was compatible with other mud additives. An operation techniques were also developed for the effective use of this LCM.

关 键 词：恶性漏失 塑性 堵漏 施工工艺 

分 类 号：TE282[石油与天然气工程—油气井工程]