塔河油田T1-5H井泵送桥塞分段加砂压裂工艺
Staged sand fracturing with pumped bridge plugs for well T1-5H in Tahe oilfield
谢进 1刘述忍 2刘凯 1王龙海 2权吉忠 1王明意1
作者信息
- 1. 中国石化西北油田分公司完井测试管理中心 新疆库尔勒 841600
- 2. 中国石油集团渤海钻探工程有限公司油气井测试分公司 河北廊坊 065007
- 折叠
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 3 210.7 m3,累计产能提高 2 401.6 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.
Abstract
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 H2 S 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 3 210.7 m3 and enhanced the cumulative production per well by 2 401.6 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.
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Key words
Carboniferous/pumped bridge plug/staged sand fracturing/thin interbedded sandstone-mudstone reservoir/coiled tubing/packer/soluble bridge plug引用本文复制引用
出版年
2024
NETL
NSTL
万方数据