高密度抗盐隔离液BH-HDS的研制与应用

齐奔; 刘文明; 付家文; 林志辉; 孙勤亮; 王圣明; 宗勇

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

doi: 10.3969/j.issn.1001-5620.2017.05.014

渤海钻探第二固井分公司, 天津 300280

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）。

详细信息

作者简介:
齐奔,高级工程师,博士,1986年生,毕业于南开大学材料物理与化学专业,现在从事固井外加剂研发及技术研究工作。电话(022)25961706;E-mail:benqi2007@163.com。

中图分类号: TE256
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出版历程
- 收稿日期: 2017-04-11
- 刊出日期: 2017-09-30

Development and Application of High Density Salt Resistant Spacer BH-HDS

The Second Cementing Branch of CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280

摘要

摘要: 高密度、盐膏层井对提高顶替效率的固井隔离液提出了更高的要求。通过选用生物质聚合物、无机悬浮物以及无机盐复合材料作为悬浮剂，阴离子聚合物作为稀释剂，重晶石作为加重剂，配制出一种新型隔离液。研究表明，该隔离液体系在1.50～2.40 g/cm³范围内具有良好的流变性能和沉降稳定性能，并且该体系具有良好的抗温性能，当温度达到180℃时，1.80 g/cm³隔离液的上下密度差为0.06 g/cm³，2.20 g/cm³隔离液的密度差为0.03 g/cm³ ；此外，该隔离液抗盐能达半饱和，半饱和盐水隔离液具有良好的悬浮稳定性和流变性。测试了隔离液与钻井液、隔离液与水泥浆、隔离液与钻井液、水泥浆3种混合液的相容性能，研究表明隔离液具有良好的相容性，加入隔离液的水泥浆的稠化时间较纯水泥浆稠化时间长。该高密度抗盐隔离液在伊拉克高压盐膏层应用2井次、在大港油田中深层油层现场应用1井次，固井质量1口合格，2口优质。
- 高密度 /
- 抗盐 /
- 隔离液 /
- 固井 /
- 固井质量 /
- 相容性
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.
- High density /
- Salt resistant /
- Spacer /
- Well cementing /
- Cementing quality /
- Compatibility

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