试油测试一体化工艺在GT1井的应用
Application of integrated testing techniques in well GT1
庞振力 1杜卫刚 1张宏胜 2夏林 3季鹏1
作者信息
- 1. 中国石油集团海洋工程有限公司天津分公司 天津 300451
- 2. 华北油田雄安分公司技术研究所 河北任丘 062552
- 3. 中国石油集团渤海钻探工程有限公司油气合作开发分公司 天津 300280
- 折叠
摘要
GT1 井是集团公司海上潜山构造上的一口"高温、高压"重点风险探井,针对该井储层特点、井身结构、试油测试目的及施工周期安排等,优化设计了射孔-测试-排液-酸化解堵一体化管柱,可实现射孔、测试、排液、解堵 4 项功能,实现了四联作工艺技术.确保探井测试成功,并取全取准测试资料.解决了海上施工周期短、污液处理难等问题,减少了地层污染,与常规试油工艺相比,缩短试油周期 6 d,提高生产效率 35%,生产污液回收减少 260 m3,同时获取了原始地层压力、酸后解堵地层能量及排液后地层能量.提高了海上高温高压深井测试作业效率,降低了井控风险,保护了储层.该井的顺利完成为海上高温高压深井测试、解堵作业积累了宝贵经验,对后续探井勘探开发具有重要的指导意义.
Abstract
Well GT1 is a key CNPC risk exploratory well under high-temperature and high-pressure in an offshore buried hill structure.Considering the reservoir characteristics,well structure,testing objectives,and the operation schedule,an optimized integrated tubing system was designed to perform perforation,testing,drainage,and acidizing simultaneously,realizing a combined operation technique.The technique can ensure the successful testing of the exploratory well and the accurate acquisition of test data.It addresses the challenges such as short offshore operational cycles and difficult waste fluid management,reducing formation contamination.Compared to conventional well testing methods,this integrated approach shortened the testing period by six days,improved operational efficiency by 35%,and reduced the recovery of contaminated fluid by 260 m3.Additionally,it provided valuable data on initial formation pressure,post-acidizing formation energy,and post-drainage formation energy.This approach enhances the efficiency of offshore high-temperature,high-pressure deep well testing,reduces well control risks,and protects the reservoir.The successful completion of this well offers valuable insights into offshore high-temperature,high-pressure deep well testing and stimulation operations,providing significant guidance for the development of future exploratory wells.
关键词
高温高压/一体化管柱/酸化解堵/地层测试/地层能量/作业效率/井控风险/现场应用Key words
high temperature and high pressure/integrated pipe string/acidizing/formation testing/formation energy/operational efficiency/well control risk/field application引用本文复制引用
基金项目
中国石油海洋公司天津分公司科技研发项目(202302-0201)
出版年
2024
NETL
NSTL
万方数据