高强塑性低密度水泥浆体系在叙利亚热采井中应用  

The Application of the High Strength Plasticity Low-density Cement Slurry in Thermal Recovery Well of Syrian

作　　者：郑舟 华苏东[2] 姚晓[2] 胡中磊 

机构地区：[1]中石化江苏石油管理局钻井处,江苏扬州225265 [2]南京工业大学,江苏南京210009

出　　处：《西部探矿工程》2014年第10期22-24,共3页West-China Exploration Engineering

基　　金：国家科技型中小企业技术创新基金支持(12C26213202487)

摘　　要：叙利亚稠油油藏埋藏深度一般在500～2000m.地层特点以粗碎岩屑为主,具有砂砾岩颗粒组、分选差、泥质含量低、胶结疏松、高空隙度、高渗透等特点,其中O、T两个油田地层多易漏.针对这2个油田固井难点,设计热采井固井用低密度水泥浆体系,其API失水量低,防漏性能好,抗压强度发展快（24h,7MPa以上）,水泥石致密不收缩,高温下强度不衰退,稠化时间达到固井施工的要求.固井质量电测结果：全井封固质量优质,尤其是低密度封固段,水泥石强度满足射孔及采油要求.The buried depth of heavy oil reservoir is generally 500- 2000m in Syrian. The stratum mainly characterized by coarse clas- tic rocks, including sandy conglomerate with coarse grain, poor sorting, low clay content, unconsolidated cement, high porosity, high permeability and other characteristics, especially, the stratum in both of O, T oilfields is easy to leak oil. In allusion to the diffi- culties of these oilfields cementing, low-density cement slurry sys- tem was applied in designing the thermal recovery wells cement- ing, so its API is a low loss of water, good leak-proof performance, compressive strength develop rapidly（24h, 7MPa above）, cement dense does not shrink, strength does not decline in high tempera- ture, thickening time meets cementing requirements. Cementing quality measuring results shows： full-well cementing is in high- quality, especially in cementing segments with low density, ce- ments strength could meets the requirements of perforation and oil recovery.

关 键 词：低密度水泥浆 固井 固井质量 热采井 

分 类 号：TE256.6[石油与天然气工程—油气井工程]