摘要
在抗高温水泥浆体系中加入惰性防腐材料以及具有防窜特性的水泥外加剂,采取抗腐蚀材料和防窜材料相配合的方式,形成了抗高温防腐蚀水泥浆体系,满足了大港油田在深部储层富含H2S、CO2地层的固井需求。通过对水泥基浆、防窜水泥浆、加有抗腐蚀剂的防窜水泥浆的抗H2S和CO2腐蚀性能进行评价,并分别从水泥浆综合性能、防窜能力、对界面胶结强度的影响等方面,分析了抗高温防腐蚀水泥浆体系的抗腐蚀能力以及工程可应用性。实验结果表明:加入抗腐蚀材料的防窜水泥浆体系明显地增加了水泥石的抗腐蚀能力。抗高温防腐蚀水泥浆体系在千米桥潜山千4-18井的成功应用,也表明该套防腐水泥浆体系能够保证固井质量,实现层间有效封隔,满足工程要求。
An anti-corrosion cement slurry was formulated by adding an inert anti-corrosion additive and an anti-channeling additive into a high temperature cement slurry. This anti-corrosion cement slurry satisfied the needs for cementing in wells penetrating H2 S and CO2 rich formations. Evaluation was conducted on the base fluid and the required additives for the cement slurry. The anticorrosion performance and engineering applicability of the cement slurry were analyzed through laboratory experiments in terms of the integrated performance, anti-channeling ability and effect on the bond strength of the cement sheath interfaces of the cement slurry. The experiment results showed that the anti-corrosion performance of the set cement was remarkably enhanced if cement slurry was treated with the anti-corrosion additive. The formulated anti-corrosion cement slurry was used successfully in Well Qian4-18 penetrating Qianmiqiao buried hill, satisfying the needs for drilling operation.
出处
《钻井液与完井液》
CAS
北大核心
2014年第4期68-70,100,共3页
Drilling Fluid & Completion Fluid
关键词
抗腐蚀
硫化氢
二氧化碳
固井
千米桥潜山
Anti-corrosion
Hydrogen sulfide
Carbon dioxide
Well cementing
Qianmuqiao buried hill
