摘要
哈萨克斯坦北部扎奇油田是为被断层复杂化的背斜构造,油气水分布十分复杂,固井后上部高压气层易发生环空气窜,下部易发生水泥浆漏失,固井质量差。针对该油田的复杂地质情况,开发应用了低温高强低密度水泥浆体系,该体系稳定性和沉降稳定性良好,失水量低(小于30mL)且易于控制,游离液为零,稠化曲线呈直角效应,稠化时间可调;水泥石早期强度发展快,抗压强度高,水泥石致密,具有较强的抗腐蚀能力;具有微膨胀性能,能形成良好胶结界面,防气窜能力强。在该油田的现场应用中,固井质量合格率为100%、优质率为94%。
In Kazakhstan, the North Buzachi reservoir is composed of 11 blocks with different sizes. The reservoir structure and fluid distribution are very complex. Active edge/bottom water and gas cap coexist in this reservoir. The presence of the high pressure gas causes breakthrough of gas after cementing. The breakthrough of gas can sometimes reach the surface, and gas can be seen even at the surface, bringing the water also to the surface. To solve these problems, a low-temperature low-density cement slurry was ...
出处
《钻井液与完井液》
CAS
北大核心
2006年第6期79-80,88,共3页
Drilling Fluid & Completion Fluid
关键词
固井
水泥浆
低密度
高强度
北部扎奇油田
cementing
cement slurry
low density
high strength
North Buzachi Oilfield
