腐蚀环境下基于井筒完整性与流动保障的完井技术

发布时间：2018-01-08 03:04

本文关键词：腐蚀环境下基于井筒完整性与流动保障的完井技术　出处：《大庆石油地质与开发》2017年03期 　论文类型：期刊论文

【摘要】：为保证油井安全高效生产,研究了一套适合含H_2S、CO_2等腐蚀性气体的井筒完整性与流动保障的完井技术。根据研究区块油藏地质特征,基于油气井节点分析理论,优选了完井管柱尺寸及举升方式;考虑完井管柱和关键完井工具尺寸等因素,优选了研究区块油井完井井身结构及配套的完井管柱结构;根据材质选择图版及完井成本确定了完井管柱材质。在此基础上,对完井管柱在初始状态、下入管柱、稳定生产、气举生产及起出管柱等关键工况下的强度进行校核,并设计了配套的完井工艺。该完井技术在研究区块25口井应用效果良好,不仅能够满足油井正常生产,而且具有防腐、防沥青等特点,可推广应用于国内外同类油田。
[Abstract]:In order to ensure the safe and efficient production of oil wells, a set of completion techniques suitable for wellbore integrity and flow assurance of corrosive gases such as H2SCO _ 2 were studied, according to the geological characteristics of the studied block. Based on the theory of oil and gas well node analysis, the completion string size and lifting mode are selected. Considering factors such as completion string and key completion tool size, the well bore structure and complete completion string structure in the study block are optimized. According to the material selection chart and completion cost, the completion string material is determined. On this basis, the completion string in the initial state, down the string, stable production. The strength of gas lift production and tubing string is checked, and a complete completion process is designed. The completion technology has good application effect in 25 wells in the research area, and can not only meet the normal production of oil wells. Moreover, it has the characteristics of anticorrosion, bitumen and so on, and can be popularized and applied in the same oil fields at home and abroad.
【作者单位】：中国石化石油工程技术研究院;中国石化国际石油勘探开发有限公司;中国石油塔里木油田分公司天然气事业部;中国石油长庆油田分公司采油一厂;
【基金】：国家重大专项“复杂地层完井关键技术研究”(2011ZX05031-004-004)
【分类号】：TE257
【正文快照】： 3.中国石油塔里木油田分公司天然气事业部,新疆库尔勒841000;4.中国石油长庆油田分公司采油一厂,陕西延安71600)对于含有H2S、CO2等腐蚀性气体的油气藏,在实际完井过程中,有的采用材质防腐与封隔器防腐相结合[1],有的采用化学防腐及封隔器防腐相结合[2-3]。对于含有沥青质的油

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