注水开发中水渗流对固井质量的影响  

Experimental study of water seepage impacts on cementing in water flooding fields

作　　者：陈晓楼[1] 李扬[1] 莫继春[1] 赵永会[1] 肖志兴[1] 

机构地区：[1]大庆石油管理局钻井研究所

出　　处：《钻井液与完井液》1999年第5期21-24,共4页Drilling Fluid & Completion Fluid

摘　　要：注水开发可以保持油层产能,但由于长期注水,地下已形成多压力层系,加之地层中流体渗流的冲刷、侵蚀水泥环,严重地影响了水泥环的胶结质量。根据大庆油田地质特点研制了水渗流模拟装置,并利用该装置进行压差和冰渗流对水泥环胶结质量影响的试验研究。试验结果表明,在现场固井中压差应控制在1—9 MPa;水渗流影响固井质量的临界流速为49.76 mm/h;在高含水、高渗透地层中,提高固井质量的措施是调整钻井液性能以及在固井前充分洗井,消除浮泥饼。After long time of water injection and development, different pressure systems have been formed. The fluid in the layer flushes and erodes the cement sheath, thus do harm to the cementing job. The paper described a water seepage simulating test device for cementing, according to the geographical characteristics of Daqing Oilfield. Tests showed how the pressure drop and critical velocity of water seepage effecting cementing quality.

关 键 词：注水开发 水渗流 固井质量 影响 防止地层损害 压力控制 

分 类 号：TE26[石油与天然气工程—油气井工程] TE357.6