吉林油田海坨子地区防漏固井技术

发布时间：2018-06-04 02:19

本文选题：低密度水泥浆 + 地层承压　；参考：《东北石油大学》2015年硕士论文

【摘要】：吉林油田海坨子地区石油资源非常丰富,储层具有裂缝发育、隔层强度低、油水同层等特点。2009年以来,公司在该区块分别进行大规模开发,产量开发上产成绩喜人,虽取得了一定成果,但在钻井中仍发现了一些问题,特别是钻完井时,水泥浆漏失严重,低返现象时有发生,固井质量优质率偏低,严重制约了该地区石油资源的高效开发。针对该地区固井存在易漏、质量优质率低的情况,开展低密度水泥浆体系研究、提高地层承压能力研究、提高顶替效率的综合技术措施研究和防漏固井施工工艺技术研究,成功研发了1.25-1.35g／cm3防漏高强低密度水泥浆体系,提高地层承压能力的MSC-3H堵漏钻井液配方,形成防漏固井提高顶替效率技术和防漏固井配套工艺技术,大大减少海坨子地区固井漏失风险,给采油作业提供环空质量保障。通过对海坨子地区防漏固井技术攻关,2011年,该技术现场推广应用37口井,低返井3口,低返率为8.10%,较2010年降低了12%；固井质量优质井32口,优质率为86.49%,较2010年提高了43.86%,取得了显著效果,形成了该地区防漏配套固井工艺技术,为后续增产高效开发提供了基础条件。
[Abstract]:The oil resources in Haituozi area of Jilin Oilfield are very rich, the reservoir is characterized by the development of fractures, the low intensity of the interlayer and the same layer of oil and water. Since 2009, the company has developed the block on a large scale, and has achieved a good result in the production development. Although some achievements have been made, some problems have been found in drilling, especially during drilling and completion, the cement slurry leakage is serious, the low return phenomenon occurs from time to time, and the cementing quality is on the low side, which seriously restricts the high efficiency development of oil resources in this area. In view of the fact that cementing in this area is easy to leak and low in quality and high quality, the research on low density cement slurry system, the research on improving the bearing capacity of formation, the study on comprehensive technical measures to improve displacement efficiency and the study on the technology of cementing technology for preventing leakage are carried out. The 1.25-1.35g/cm3 high strength and low density cement slurry system has been developed successfully, and the formula of MSC-3H plugging drilling fluid for improving formation pressure bearing capacity has been developed. The technology of improving displacement efficiency and matching technology of leakproof cementing has been formed. The cementing loss risk in Haituozi area is greatly reduced, and the annulus quality guarantee is provided for oil production. Through tackling the key problems of leakproof cementing technology in Haituozi area, in 2011, the technology was popularized and applied in 37 wells, 3 wells with low return wells, with a low return rate of 8.10, which was 12 lower than that of 2010, 32 wells with high cementing quality, The high quality rate is 86.49, which is 43.86% higher than that in 2010, and has achieved remarkable effect. The cementing technology of leakage prevention and matching in this area has been formed, which provides the basic conditions for the subsequent production increase and high efficiency development.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE256

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