海拉尔油田水平井钻井液技术研究与应用

发布时间：2018-04-16 04:15

本文选题：高性能水基钻井液 + 聚胺　；参考：《东北石油大学》2017年硕士论文

【摘要】：海拉尔油田是大庆油田有利的接替产区,在该地区钻水平井开发已经成为提高单井产量、降低开发成本的有效技术手段。虽然油基钻井液很好地解决井眼净化、井壁稳定、润滑防卡、保护油气层等技术难题,但是具有油基钻井液配比成本高、对环境污染大、后期钻屑处理成本高等缺点,因此需要研制一种新型高性能水基钻井液(胺基钻井液)体系来替代油基钻井液,以此来降低钻井施工的综合成本、保护环境,实现可持续发展。在对海拉尔盆地主要分布苏仁诺尔油田、贝尔油田和苏德尔特油田等几个小的油田地质特征介绍的基础上,深入分析了在海拉尔油田钻水平井钻井液在抑制地层造浆、井壁稳定、井眼清洁和润滑防卡等几个方面的难点。在大量室内实验的基础上合成了高性能水基钻井液主要处理剂—聚胺,通过与KCI、阳离子、甲酸盐等抑制剂性能对比分析表明聚胺能够有效抑制泥岩水化分散,对泥岩具有优良的抑制性能。通过对抑制剂、包被剂、降滤失剂和润滑剂等处理剂的优选,最终确定了高性能水基钻井液体系的配方,对该钻井液体系配方进行各项性能实验表明该钻井液体系性能稳定,具有较强的抑制性、封堵性、润滑性、抗污染性和储集层保护能力。高性能水基钻井液体系在海拉尔油田的苏101-平5井、希38-平1井和贝14-平2井等三口水平井施工中进行了应用,应用该钻井液体系井壁稳定、携岩能力强、润滑性好,取得了非常好的施工效果。
[Abstract]:Hailaer Oilfield is a favorable replacement for Daqing Oilfield. Drilling horizontal wells in this area has become an effective technical means to improve single well production and reduce development cost.Although oil-based drilling fluids can solve technical problems such as wellbore purification, wellbore stability, lubrication and blocking prevention, and protection of oil and gas reservoirs, they have the disadvantages of high cost of oil-base drilling fluids, high environmental pollution, and high cost of cuttings treatment in the later stage.Therefore, it is necessary to develop a new high performance water based drilling fluid (Amine based drilling fluid) system to replace oil based drilling fluid in order to reduce the comprehensive cost of drilling operation, protect the environment and realize sustainable development.Based on the introduction of the geological characteristics of several small oilfields, such as Surennuor, Bell and Sirte, the drilling fluid in horizontal wells in Hailaer Oilfield is analyzed in depth to suppress formation slurry production.Stability of wellbore, hole cleaning and lubrication blocking, and other aspects of difficulties.On the basis of a large number of laboratory experiments, polyamines, the main treatment agent of high performance water-based drilling fluid, were synthesized. The comparison with KCI, cationic acid, formate and other inhibitors shows that polyamines can effectively inhibit the hydration dispersion of mudstone.It has excellent inhibition performance to mudstone.The formula of the high performance water-based drilling fluid system was determined by the optimal selection of inhibitor, coating agent, filtration reducer and lubricant, and the performance experiments of the system showed that the drilling fluid system was stable.It has strong inhibition, plugging, lubricity, anti-pollution and reservoir protection ability.The high performance water-based drilling fluid system has been applied in the construction of three horizontal wells, well Su 101-Ping 5, well Xi 38 Ping 1 and well Bei 14 Ping 2 in Hailaer Oilfield. The drilling fluid system is used for its stable wellbore, strong rock carrying capacity and good lubricity.Very good construction effect has been achieved.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE254

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