疏松砂岩气藏管外窜槽的封堵实验研究  

Plugging Experiment of Cement Channeling in Unconsolidated Sandstone Gas Reservoir

作　　者：郎立术[1,2] 赵仁保[1,2] 柯文奇 冯兵[1,2] 孙玉龙[3] 岳湘安[1,2] 

机构地区：[1]石油工程教育部重点实验室.中国石油大学(北京),北京102249 [2]中国石油大学提高采收率研究中心(北京),北京102249 [3]中国石化胜利油田分公司胜利采油厂,山东东营257000

出　　处：《天然气技术》2010年第1期36-38,共3页NATURAL GAS TECHNOLOGY

基　　金：国家科技支撑计划课题"复杂气田采气工艺技术研究"(编号:2006BAB03B07)的资助

摘　　要：针对青海涩北气田在生产过程中由于套管外水泥环与储层接触面的胶结质量差而造成层间水容易窜至产层从而影响产能的情况,研制了低温水泥浆配方体系并进行了封堵模拟实验,评价了其固化后微观结构与抗压性能之间的关系及其在界面处的封堵效果。结果表明,添加剂的有效复配能够提高水泥浆中石英颗粒之间的联结强度,进而提高材料的固化强度;复合材料和水泥浆配方均能达到封堵的要求,但复合材料配方体系的封堵效果比水泥浆配方更好。During the production of Sebei gasfield, Qinghai Province, poor cementing quality existing between cement sheath outside of tubing and reservoir interface will bring about interlay water easily channeling into payzone, which further affects deliverability. In this study, a low-temperature cement’s formula is developed to release this effect and an experiment on plugging simulation is implemented. In addition, a relationship between microstructure and compressive property of cement after its solidification is evaluated; meanwhile, a plugging effect at interface is also assessed. Results illustrate that (1) to effectively recompound an additive can increase a connection intensity of quartz particle among cement, and then to strength a solidification intensity; (2) compound material and cement formula can all meet the requirement of plugging, especially a better effect for the former.

关 键 词：疏松砂岩 管外窜槽 堵水 有机凝胶 

分 类 号：TE256[石油与天然气工程—油气井工程]