哈得油田薄砂层油藏酸化增注效果

Acidizing stimulation effect of thin sand reservoir in Hade Oilfield

陈 兰 蒋仁裕1 建华 刘 敏 刘国德 高海军

塔里木油田公司开发事业部，新疆 库尔勒 841000 塔里木油田公司，新疆 库尔勒 841000 塔里木油田公司开发处，新疆 库尔勒 841000

Exploitation Enterprise Department, Tarim Oilfield Company, CNPC, Kuerle 841000, China TarimOilfield Company, CNPC, Kuerle 841000, China Department of Development, Tarim Oilfield Company, CNPC, Kuerle 841000, China

为解决哈得油田薄砂层油藏1井区水井欠注的问题，对薄砂层油藏水井酸化增注的可行性进行了评估。通过分析该区3口水井的施工曲线、水驱特征曲线、试井解释，以及酸化前后注水量和油压的对比，酸化效果明显。酸化后提高了地层吸水能力，减缓了地层压力下降速度，水驱效果得到明显改善，有利于提高薄砂层油藏的最终采收率。

In order to solve the underinjection problem of injection well for District 1 in the thin sand reservoirs of Hade Oilfield, the acidizing practicability of injection well was evaluated in the thin reservoirs. This article studied the acidizing treatment effects through the analysis of construction curves, waterflooding characteristic curves, well test interpretation and the changes of water injection rate and tubing pressure. The study results show that the acidizing treatment effects are obvious in three injection wells. The water intake capacity was increased and the decline rate of reservoir pressure was slowed after acidizing treatment. The waterflooding effect is improved obviously in the thin sand reservoirs of Hade Oilfield, which is in favour of the improvement of final
recovery efficiency for ultra-thin reservoirs.