摘要
为安全高效评价渤海油田深层潜山油气藏,从长裸眼段测试工艺、管柱、安全控制、压井技术等方面开展了细化研究。通过对比不同工艺优选出了“坐套测裸”+“生产测井”潜山测试工艺;引入RD试压阀与RD旁通替液阀,优化试压替液一体化测试管柱,在传统测试管柱的基础上增加了试压、替液的功能;选用PDF-HSD无固相测试液体系,引进含砂实时监测装置,通过控制压差有效地控制地层出砂;引进有毒有害气体实时监测技术并在流程中加装实时除硫装置,达到安全监控及除硫的目的;长裸眼段测试压井技术有效保障了施工后的井控安全。经渤海油田3口井应用,有效保障了作业安全,均达到工业油气流,成功获取地层测试资料,顺利评价所在区域油气藏。该技术为类似深层潜山长裸眼储量解放提供了借鉴思路。
For the safe and efficient evaluation of deep buried hill oil and gas reservoirs in Bohai Oilfield,detailed research has been carried out from the aspects of long open hole testing technology,tubing,safety control,and well killing technology.By comparing different processes,the“sitting in the casing to test the open hole”and“production logging”buried hill testing processes were optimized;Introducing RD pressure testing valve and RD bypass valve,optimizing the integrated testing string for pressure testing and liquid replacement,adding functions for pressure testing and liquid replacement on the basis of traditional testing string;Select the PDF-HSD solid-free testing fluid system,introduce a real-time monitoring device for sand content,and effectively control sand production in the formation by controlling the pressure difference.Introducing real-time monitoring technology for toxic and harmful gases and installing real-time sulfur removal devices in the process to achieve safety monitoring and sulfur removal goals.Long open hole section well killing technology effectively ensures well control safety after well testing.Through the application of three wells in Bohai oilfield,the operation safety has been effectively ensured,and industrial oil and gas flow have been achieved,successfully obtaining formation testing data.This technology provides a reference idea for the liberation of reserves in deep buried hill long open hole reservoirs.
作者
张金煌
杜连龙
张兴华
陈光峰
ZHANG Jinhuang;DU Lianlong;ZHANG Xinghua;CHEN Guangfeng(CNOOC Ener Tech-Drilling&Production Company,Tianjin 300452,China;Well Construction and Intervention Center,Tianjin Branch of CNOOC(China)Ltd.,Tianjin 300452,China)
出处
《油气井测试》
2024年第1期19-25,共7页
Well Testing
关键词
深层潜山
长裸眼
地层测试
生产测井
一体化管柱
安全控制
H2S实时监测
压井技术
deep buried-hill
long open hole
formation testing
production logging
integrated pipe tubing
safety control
H_(2)S real-time monitoring
well killing technique
