泥饼可液化处理的UltraFLO钻井完井液

韦红术; 张俊斌; 张伟国; 林海春; 魏裕森; 许明标

doi:10.3969/j.issn.1001-5620.2015.04.010

泥饼可液化处理的UltraFLO钻井完井液

doi: 10.3969/j.issn.1001-5620.2015.04.010

1.
中海石油深圳分公司深水工程技术中心,广东深圳
2. 长江大学石油工程学院,湖北荆州

基金项目: 中国海洋石油总公司重大科研专项(CNOOC-KJ125ZDXM07LTD)资助。

详细信息

作者简介:
韦红术,高级工程师,毕业于石油大学(华东)石油工程专业,现在从事钻完井技术研究与管理工作。地址:广东深圳市南山蛇口工业二路1号海洋大厦B座2楼;邮政编码518067;电话(0755)26022289;E-mail:weihsh@cnooc.com.cn。

中图分类号: TE254.3
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出版历程
- 收稿日期: 2015-03-10
- 刊出日期: 2015-07-31

UltraFLO Drill-in Fluid

Building #2 of Block B, Haiyang Mansion, No.1 GongyeEr Lu, Shekou, Nanshan, Shenzhen City, Guangdong 518067, China

摘要

摘要: 在分析传统无固相钻井完井液体系利弊的基础上,研制出了全部材料可液化的无黏土相钻井完井液体系——UltraFLO 钻井完井液。该体系在配合简易隐形酸完井液完井时能够将泥饼全部液化,并且该体系抗温140 ℃;具有较好的抑制性、润滑性、抗污染性(15% 钻屑);具有较好的储层保护效果,即使在直接返排的情况下,其渗透率恢复值也能够达到89%,在经过简易隐形酸完井液完井后,渗透率恢复值提高到了96%,这说明简易隐形酸能够进一步解除伤害,保护储层。室内研究和现场实践证明,UltraFLO 钻井完井液体系简化了施工工艺,节省作业时间,具有较好的储层保护效果,现场应用3 口井产量均超预期,应用效果较好。
- 低渗透储层 /
- 防止地层损害 /
- 钻井完井液 /
- 可液化
Abstract: A new clay-free drill-in fluid, UltraFLO was developed based on the analyses of the advantages and disadvantages of conventional drill-in fluids. UltraFLO has components that are all liquefiable. When used with simple latent acids in well completion, all mud cakes can be made liquid. UltraFLO remains stable at temperatures as high as 140 ℃, and can tolerate drill cutting contamination to 15%. Permeability recovery of cores contaminated by UltraFLO drill-in fluid reaches 89%, and 96% after treatment of the cores with latent acids. Filed application of UltraFLO shows that this drill-in fluid has good inhibitive capacity and lubricity, and is easy to use. Three wells drilled with UltraFLO drill-in fluid had production rates beating estimates.
- Low permeability reservoir /
- Formation damage prevention /
- Drill-in fluid /
- Liquefiable

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