碳酸盐岩缝洞型油藏深穿透酸化实践及认识

Deep acidification practice in fractured-vuggy carbonate reservoirs

张世亮 赵毓 王培轶 李璐 丁磊

Zhang Shiliang Zhao Yu Wang Peiyi Li Lu Ding Lei

中国石化 西北油田分公司 采油二厂, 新疆 轮台 841604

No.2 Oil Production Plant, SINOPEC Northwest Company, Luntai, Xinjiang 841604, China

随着塔河油田缝洞型油藏的不断开发，受多轮次注水污染、能量下降裂缝闭合、完井酸压效果差等综合影响，远井裂缝导流能力差的井逐步增多，生产表现为供液不足，严重制约油井生产。前期主要依靠常规酸化、大型酸化等传统酸化理念改造，酸液进入近井地带即快速反应，作用距离十分有限，有效率低。通过实施深穿透酸化工艺技术，有效解决了远井通道导流问题，应用前景广阔。

With the deep development of the fractured-vuggy reservoirs in the Tahe oil field, due to multi-round water injection pollution, cracks closing by energy loss, and poor well completion and acidification effects, there are more and more wells in which the far shaft fractures show a poor conducting capacity. Liquid lack seriously restricts oil production. Conventional and large-scale acidifications were applied; however, acid fluids reacted rapidly when they came close to wells, showing a restricted effective range and poor efficiency. A deep acidification technique was implemented, which conducted far channels and showed a good prospect.

https://doi.org/10.11781/sysydz2017S1052