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混合充气钻井技术在深井盐水层段的应用

第38卷 第1期

2016年1 月石 油 钻 采 工 艺

OIL DRILLING & PRODUCTION TECHNOLOGY Vol. 38 No. 1Jan. 2016

文章编号:1000 – 7393( 2016 )

01 – 0010– 04 DOI:10.13639/j.odpt.2016.01.003混合充气钻井技术在深井盐水层段的应用

鲁立强

中国石油集团长城钻探工程有限公司

引用格式:鲁立强. 混合充气钻井技术在深井盐水层段的应用[J ].石油钻采工艺,2016,38(1):10-13.

摘要:轮台126井在钻井过程中遇到地层产水量、使用单一流体钻井工艺无法钻进的难题,对雾化、泡沫、充气钻井等工艺的特点及实施条件进行了研究分析,在轮台126井?311.2 mm 井眼(井深3 900~5 000 m )砾石层井段应用了混合气相流态钻井技术,克服了由于复杂地层施工条件雾化或者泡沫单一钻井流体无法实施钻进的难题,解决了增压机压力级别不能满足实施深井充气钻井技术的问题,避免了由于处理复杂事故造成的非生产时间,成功实现了砾石层安全快速的钻井目的,证明了混合气相流态气体钻井技术是解决深井高产水地层钻井困难的较有效的方法。

关键词:混合气相流态钻井;深井;盐水层;雾化钻井;泡沫钻井;充气钻井

中文分类号:TE24 文献标识码:A

Application of mixed aerated drilling technilogy in deep well saltwater interval

LU Liqiang

Greatwall Drilling Company , CNPC , Beijing 100101, China

Citation: LU Liqiang. Application of mixed aerated drilling technilogy in deep well saltwater interval [J ]. Oil Drilling & Production Technology, 2016, 38 (1):10-13.

Abstract: Formation was encountered during drilling of Well 126 which produced large volume of water, so single fluid drilling technology could not proceed with drilling. Research and analysis was conducted to the characteristics and implementation conditions of mist, foam and aerated drilling techniques. In the gravel layer interval of ?311.2 mm hole the depth is 3 900-5 000 m in Luntai Well 126, the mixed gas phase flow regime drilling technology was employed, which overcame the difficulty of being unable to proceed with drilling using single mist or foam drilling fluid due to complex formation construction conditions, solved the problem that the pressure rating of supercharger could not meet the requirement of aerated drilling technology in deep wells, avoided the non-production time due to handling of complex accidents, successfully realized the goal of safe and fast drilling in gravel layer and proved that the mixed gas phase fluid regime drilling technology is the most effective method to solve the difficulty of drilling in high water-production formaitons in deep wells.

Key words: mixed gas phase flow regime drilling; deep well; saltwater interval; mist drilling; foam drilling; aerated drilling 第一作者:鲁立强(1980-),2007年毕业于中国石油大学(北京),硕士研究生,现主要从事欠平衡钻井技术研究与项目管理等工作,工程师。

通讯地址:(100101)北京市朝阳区北辰西路北辰世纪中心A1116。电话:010-********。E-mail :luliqiang1@https://www.wendangku.net/doc/0411962791.html, 近年来,气体钻井技术在国内发展迅速,应用

规模、领域逐渐扩大,工艺体系逐渐完善。一度困扰

气体钻井技术的问题主要是地层出水,现已可通过

雾化钻井、泡沫钻井、充气钻井技术起到一定程度缓

解。由于以上几种钻井工艺均是井眼环空中仅有单

一流态存在,在实际施工过程中存在一定的问题[1]。

在新疆轮台126井3 900~5 000 m 井段钻遇水层,在通过技术可行性分析论证的基础上[2-9],尝试使用多种混合气相流态钻井技术进行钻井,安全顺利地完成了该层段的施工,取得了较好的效果。1 工程设计Engineering design 轮台126井位于塔里木盆地库车坳陷克拉苏构

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