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| 强抑制防塌高性能钻井液体系在伊拉克格拉芙油田的研究应用 |
| Research and Application of Strongly Suppressing Anti-collapse Drilling Fluid Technology in Garraf Oilfield |
| 投稿时间：2018-12-24 修订日期：2018-12-24 |
| DOI： |
| 中文关键词: 三维水平井 井壁稳定 泥页岩 盐膏层 |
| 英文关键词: Three-dimensional Horizontal Wells high performance wellbore stability Shale Gypsum |
| 基金项目:国家“863”计划项目“海上大位移钻井液关键技术研究”( 2012AA091502) ; 中石油集团科技重大专项“高温高密度钻井液及可排放海水基钻井液成套技术研究”( 2013E － 3802) |
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| 中文摘要: |
| 伊拉克格拉芙油田地层岩性复杂, 新近系－古近系地层存在大段盐膏层、Mishrif石灰岩地层与泥页岩易坍塌、井壁稳定性差, 钻井过程中出现阻卡、漏失等钻井复杂情况影响速度。为了解决上述难题, 针对该油田地层岩性,从影响井壁稳定因素入手,结合室内实验和现场作业优选出了抑制性强的、抗盐钙侵的强抑制防塌钻井液。现场应用证明,该钻井液体系抗盐抗污染能力强,提高井壁稳定性,降低复杂事故率,尤其Ga-F27P三维水平井成功施工,取得良好的效果。 |
| 英文摘要: |
| The formation of Grarraf oil field is very complicated.Drilling problem have occurred frequently due to the existence of long interval anhydrite formation,easily-collapsing shalestone and limestone in Mishrif,and borehole collapse and Pipe sticking and Lost circulation. To solve the above problems, From wellbor stability factors, combining laboratory experiments and operations, The under-saturated brine-polysulfide mud is presented which is superior in inhibition and salt resistance.Therefore,the mud provides effective engineering support for salt resistance,wellbore stability and reduce the accident rate. Especially in well Ga-F27P which has acquired good service effect |
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