钻井液与完井液2017，Vol.34Issue(5)：73-78,6.DOI:10.3969/j.issn.1001-5620.2017.05.014
高密度抗盐隔离液BH-HDS的研制与应用
Development and Application of High Density Salt Resistant Spacer BH-HDS
摘要
Abstract
Wells drilled with high density drilling fluids and wells penetrating formations with salt and gypsum impose stricter requirements on the increase of displacement efficiency of spacers during well cementing. A spacer was formulated with a selected biopolymer, an inorganic suspended matter and compounded inorganic salts as suspending agent, an anionic polymer as thinner, and barite as weighting agent. Study showed that the spacer, with its density adjustable between 1.50 g/cm3 and 2.40 g/cm3, had good rheology and sedimentation stability, and superior high temperature performance. At 180 ℃, the spacer of 1.80 g/cm3 had density difference of 0.06 g/cm3 between the upper and lower parts of the spacer; when the density of the spacer was 2.20 g/cm3, the density difference became 0.03 g/cm3.Furthermore, this spacer is resistant to the contamination from saltwater of semi-saturation; spacers formulated with saltwater of semi-saturation had good suspension stability and rheology. Good compatibility of the spacer with drilling fluid and cement slurry was obtained by mixing the spacer with drilling fluid, with cement slurry and mixing the space with drilling fluid and cement slurry to test its compatibility. Cement slurries containing the spacer had longer thickening time than pure cement slurries.BH-HDS has been used in high-pressure formations with salt and gypsum (Iraq) and mid-deep reservoir(Dagang oilfield), gaining good operation achievements.关键词
高密度/抗盐/隔离液/固井/固井质量/相容性Key words
High density/Salt resistant/Spacer/Well cementing/Cementing quality/Compatibility分类
能源科技引用本文复制引用
齐奔,刘文明,付家文,林志辉,孙勤亮,王圣明,宗勇..高密度抗盐隔离液BH-HDS的研制与应用[J].钻井液与完井液,2017,34(5):73-78,6.基金项目
中国石油集团渤海钻探工程有限公司重大研发项目"油田化学固井添加剂研制"(2016ZD07K). （2016ZD07K）
