气体钻井后气液转换新工艺

马庆涛

马庆涛. 气体钻井后气液转换新工艺[J]. 石油钻探技术, 2013, 41(5): 67-70. DOI: 10.3969/j.issn.1001-0890.2013.05.013
引用本文: 马庆涛. 气体钻井后气液转换新工艺[J]. 石油钻探技术, 2013, 41(5): 67-70. DOI: 10.3969/j.issn.1001-0890.2013.05.013
Ma Qingtao. New Technology of Drilling Fluids Conversion after Gas Drilling[J]. Petroleum Drilling Techniques, 2013, 41(5): 67-70. DOI: 10.3969/j.issn.1001-0890.2013.05.013
Citation: Ma Qingtao. New Technology of Drilling Fluids Conversion after Gas Drilling[J]. Petroleum Drilling Techniques, 2013, 41(5): 67-70. DOI: 10.3969/j.issn.1001-0890.2013.05.013

气体钻井后气液转换新工艺

基金项目: 

国家科技重大专项"大型油气田及煤层气开发"(编号:2011ZX05022-001)资助

详细信息
    作者简介:

    马庆涛(1985—),男,山东阳谷人,2008年毕业于中国石油大学(华东)石油工程专业,2011年获中国石油大学(华东)油气井工程专业硕士学位,工程师,主要从事钻井工程设计和相关研究工作。

  • 中图分类号: TE242

New Technology of Drilling Fluids Conversion after Gas Drilling

  • 摘要: 为了解决气体钻井后气液转换过程中容易出现的地层水化剥蚀、井壁坍塌、钻井液漏失等问题,对气体钻井后的气液转换工艺进行了研究。分析了3种常规气液转换工艺存在的风险,根据井壁润湿反转理论,在井壁上喷淋润湿反转剂使其形成亲油状态,保护井壁不坍塌;在注入钻井液前先将钻头提至上一层套管内,然后旋转钻头喷淋润湿反转剂,对井壁进行润湿反转处理;最后将钻头下到井底,边慢速起钻边小排量注入钻井液。在元坝区块元页 HF-1 井的应用表明,转换时间仅为常规气液转换工艺的47%,润湿反转剂消耗量仅为常规气液转换工艺的13%,整个过程无井下故障发生。这说明该气液转换新工艺是一种安全、简易、经济有效的气液转换工艺,可为气体钻井后气液转换提供新的技术支持。
    Abstract: In order to solve the problems such as formation hydration,erosion,borehole collapse,loss of circulation,which are likely to occur during drilling fluid conversion after gas drilling,the gas-drilling fluid alteration process after gas drilling was studied.Three kinds of risks associated with conventional gas-drilling fluid conversion were analyzed.According to wettability reversal theory,spraying wet reversal agent to borehole to make it oil-wet for keeping borehole stability.The procedure includes pulling the bit back up to the last casing,then rotating bit,spraying wet reversal agent to change the borehole wettability.Finally,the drilling bit can be run to the bottom,and pumping drilling fluids at low flow rate while tripping out at slow speed.The application of the procedure in Well Yuanye HF-1 in Yuanba Block showed,the operation time was only 47% that of conversional method,and the consumption of wet reversal agent was only 13% of that in conversional ways,was no trouble occurred.It indicated that new alteration process for gas-drilling fluid was safe,simple,economic,and effective,could provide technical support for drilling fluid alteration after gas drilling in the future.
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出版历程
  • 收稿日期:  2013-01-25
  • 修回日期:  2013-07-28
  • 刊出日期:  1899-12-31

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