油气藏评价与开发 >
2021 , Vol. 11 >Issue 3: 452 - 458
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2021.03.022
耐高温栲胶堵剂的研制及油藏适应性评价
收稿日期: 2020-03-25
网络出版日期: 2021-06-24
基金资助
国家科技重大专项“稠油多介质蒸汽驱技术研究与应用”(2016ZX05012-001);中国石油重大专项“新疆油田浅层稠油稳产提效技术研究与应用”(2017E-04-08)
Development and reservoir adaptability evaluation of a high temperature resistant plugging agent: tannin extract
Received date: 2020-03-25
Online published: 2021-06-24
稠油油藏蒸汽驱控制汽窜使用的耐高温堵剂存在强度低、老化稳定性差等问题,急需研发新型耐高温堵剂,推进现场应用。针对新疆油田九6区齐古组稠油油藏层间非均质性强导致的蒸汽驱汽窜严重、泡沫驱效果差等生产技术难题,研制出了由磺化栲胶、交联剂和促进剂组成的适用于高温油藏的磺化栲胶堵剂体系。通过静态评价实验,优化出堵剂配方为：0.6 %磺化栲胶+（2.0 %~2.5 %）醛类交联剂Ⅰ+（1.0 %~2.0 %）酚类交联剂Ⅱ+（0.05 %~0.06 %）促进剂。油藏适应性评价结果表明：在油藏温度下老化30 d后堵剂强度保持H级以上,堵剂的封堵效率在94 %以上,研究成果为克拉玛依油田九6区齐古组稠油油藏控制蒸汽窜技术的现场应用奠定了基础。
刘刚 , 王俊衡 , 王丹翎 , 颜永何 , 蒋雪峰 , 王倩 . 耐高温栲胶堵剂的研制及油藏适应性评价[J]. 油气藏评价与开发, 2021 , 11(3) : 452 -458 . DOI: 10.13809/j.cnki.cn32-1825/te.2021.03.022
There are several problems in the high temperature resistant plugging agent used in steam flooding of heavy oil reservoirs to control steam channeling, such as low strength and poor long-term stability. So, it is urgent to develop a new type of high temperature resistant plugging agent to promote on-site application. In order to solve the technical problems caused by strong inter-layer heterogeneity of the heavy oil reservoirs in District 9-6 of Qigu Formation in Xinjiang Oilfield, including severe steam channeling and poor foam flooding effects, a plugging agent system suitable for high temperature reservoirs and composed of sulfonated tannin extract, cross-linking agent and accelerant has been developed. By the static evaluation experiment, it is found that the optimized formula of the plugging agent is as follows: 0.6 % sulfonated tannin extract + （2.0 % ~ 2.5 %） aldehyde cross-linking agent Ⅰ +（1.0 % ~ 2.0 %） phenol cross-linking agent Ⅱ +（0.05 % ~ 0.06 %） accelerant. The evaluation of reservoir adaptability shows that the strength of the plugging agent remains above level H after 30 days of aging at the reservoir temperature, and the plugging efficiency is above 94 %. It has laid a foundation for the field application of steam channeling control technologies in the heavy oil reservoirs of District 9-6 of Qigu Formation in Karamay Oilfield.
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