| 缝洞型碳酸盐岩储层重复酸压改造技术 |
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| 引用本文： | 刘 辉 袁学芳 刘豇瑜 任登峰 吴红军. 缝洞型碳酸盐岩储层重复酸压改造技术[J]. 护理与康复, 2017, 0(3): 77-80 |
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| 作者姓名： | 刘 辉 袁学芳 刘豇瑜 任登峰 吴红军 |
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| 作者单位： | 中国石油塔里木油田分公司油气工程研究院 |
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| 摘 要： | 哈得逊薄砂层属于超深超薄油藏, 纵横向上储层具有较强的非均质性, 注采井组内油井受效不均衡导致开发效果变差。之前采用稳定同位素监测剩余油分布情况及注入水推进方向、速度等, 存在药剂种类少、易受井间干扰、水样后处理有较强放射性等问题, 近年逐渐改用可选种类多、无放射性污染、在该油藏适应性较好的微量物质示踪剂。以该油藏中部3个相邻注采井组为例, 13口油井中有6口井在297d的取样监测后见到显示, 推进速度为2.87~5.04m/d，其解释结果与前期同位素监测的变化趋势、生产动态基本吻合。经分析认为注入水突破是导致含水率快速上升的主要原因, 采取油井堵水、水井调剖或分层注水工艺可提高注水波及体积及驱油效率。迄今在哈得逊薄砂层油藏应用65 井次，在轮南、塔中、东河塘等老区应用近179井次，取得了较好的效果。
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| 关 键 词： | 超深超薄砂岩油藏；示踪剂监测；注入水流向 |
Research and Practice of Acid Re-fracturing Technology in Fractured-vuggy Carbonate Reservoirs |
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| Liu Hui,Yuan Xuefang,Liu Jiangyu,Ren Dengfeng,Wu Hongjun. Research and Practice of Acid Re-fracturing Technology in Fractured-vuggy Carbonate Reservoirs[J]. Nursing and Rehabilitation Journal, 2017, 0(3): 77-80 |
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| Authors: | Liu Hui Yuan Xuefang Liu Jiangyu Ren Dengfeng Wu Hongjun |
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| Affiliation: | Research Institute of Petroleum Engineering, PetroChina Tarim Oilfield Company, Korla |
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| Abstract: | The thin sand layers of the Hadson Oilfield belong to the ultra-deep and ultra-thin reservoirs, with a strong heterogeneity in vertical and horizontal directions. In the producer-injector group the uneven responses of the oil wells cause the development effect worse. In monitoring the remaining oil distribution,the injected water advance direction and velocity, etc. with stable isotopes in the past, there were some problems such as few varieties of agents, being susceptible to the interwell interference, strong radioactive after the water treatment and other issues. In recent years the monitoring agents gradually switched to microelement tracers which have many varieties, no radioactive pollution, and good applicability to the oil reservoirs. Taking the three producer-injector group in the middle of the reservoir as an example, five of the 13 oil wells had the tracer show after monitoring with sampling at 297 days, and the advance velocity was 2. 87 to 5. 04 m/ d. The interpretation results are basically consistent with the variation tendency and production performan cepreviously monitored with isotopes. It is concluded by analysis that the breakthrough of injected water is the main reason for the rapid increase of the water cut. Adoption of technologies such as water block off in the oil wells, profile control of the water injectors,or separated-layer water-flooding can improve the swept volume of injected water and oil displacement efficiency. So far, 65 well-time applications of the above technologies to the thin sand oil reservoirs of Hadson, and nearly 180 well - time applications to the old districts such as Lunnan (South of Luntai), Tazhong (Central Tarim), Donghetang, and others, achieved good results. |
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| Keywords: | super-deep and super-thin sandstone reservoir monitoring with tracer direction of the injection water |
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