摘要
针对塔河油田泵送桥塞分段加砂压裂施工中存在泵送桥塞工具串易遇阻遇卡,缺乏相配的井下工具,含硫化氢、井控风险较高等问题,以T1-5H井为例,提出了井下工具泵送模拟技术,提高工具串在复合套管中的通过性;形成了人工井底地质深度回归结合连续油管探底的高精度校深方法,保证首段射孔位置精确;采用大通径全封堵桥塞,解决高压气井组下生产管柱的难题。应用表明,T1-5H井泵送桥塞分段加砂压裂完井工艺4段5簇,注入地层总液量3210.7 m^(3),累计产能提高2401.6 t,有效提高了储层动用程度。该工艺为西北工区砂泥岩薄互储层改造提供经验借鉴,为实现超深石炭系储层大规模开发奠定了技术基础。
The staged sand fracturing process with pumped bridge plugs in well T1-5H in the Tahe oilfield encounters some challenges,such as the tool string sticking/blocking,unavailability of compatible downhole tools,high H 2S content,and high well control risks.This paper presents a downhole tool pumping simulation technology for well T1-5H to enhance the passability of the tool string in composite casing.A high-precision depth calibration method combining artificial bottomhole geological depth regression and coiled tubing bottom detection was developed to ensure the accuracy of the first perforation position.Large-diameter full-sealing bridge plugs were employed to address the challenges of running production tubing in high-pressure gas well groups.Field application shows that the staged sand fracturing completion technology for well T1-5H,comprising four stages and five clusters,achieved a total fluid injection volume of 3210.7 m^(3)and enhanced the cumulative production per well by 2401.6 tons.This effectively enhances reservoir recovery.The proposed technology offers valuable insights for the stimulation of thin interbedded sandstone-mudstone reservoirs in the northwest region and lays a technical foundation for the large-scale development of ultra-deep Carboniferous reservoirs.
作者
谢进
刘述忍
刘凯
王龙海
权吉忠
王明意
XIE Jin;LIU Shuren;LIU Kai;WANG Longhai;QUAN Jizhong;WANG Mingyi(Completion Test Management Centre,SINOPEC Northwest Oilfield Company,Korla,Xinjiang 841600,China;Well Testing Branch,CNPC Bohai Drilling Company,Langfang,Hebei 065007,China)
出处
《油气井测试》
2024年第3期53-59,共7页
Well Testing
关键词
石炭系
泵送桥塞
分段加砂压裂
砂泥薄互储层
连续油管
封隔器
可溶桥塞
Carboniferous
pumped bridge plug
staged sand fracturing
thin interbedded sandstone-mudstone reservoir
coiled tubing
packer
soluble bridge plug
