海上油田中深井多段优快爆燃压裂技术优化与应用  

Optimization and application of multi-stage optimal and fast deflagration fracturing technology in the medium and deep wells of offshore oilfield

作　　者：孙林 易飞 任杨 汪洋 李少伟 SUN Lin;YI Fei;REN Yang;WANG Yang;LI Shaowei(CNOOC Energy Technology&Seroices Limited,Tianjin 300452,China;CNOOC China Limited,Shenzhen Branch,Shenzhen,Guangdong 518067,China;Xi'an Tong Oil Tools Co.Ltd.,Xi'an,Shaanzi 710065,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海石油(中国)有限公司深圳分公司,广东深圳518067 [3]西安通源石油科技股份有限公司,陕西西安710065

出　　处：《中国海上油气》2024年第1期125-133,共9页China Offshore Oil and Gas

基　　金：中国海洋石油集团有限公司“十三五”重大科技项目“南海东部油田上产2000万吨关键技术研究(编号:CNOOC-KJ 135ZDXM 37 SZ)”;中海油能源发展股份有限公司重大专项“采油化学产品自主化研发及产业化应用(Ι期)(编号:HFZDZX-GJ2022-03)”部分研究成果。

摘　　要：海上油田中深井实施爆燃压裂技术将产生较高峰值压力,易造成施工管柱破坏、电缆断裂等安全问题,并存在作业时效及作业效果较差等难题。针对爆燃压裂难点,研发了低燃速、耐175℃高温、耐72 MPa高压爆燃压裂推进剂火药,可满足海上油田中深井高温高压储层要求;优化形成了中深井电缆传输爆燃压裂工艺,作业时效相对于油管传输爆燃压裂至少可提高8倍以上,同时能够有效保证每米储层火药质量,所采用的高强度电缆和电缆井口防喷器解决了系列安全风险问题。优化形成的海上油田中深井多段优快爆燃压裂技术,在海上油田L-10a、X-B6井进行了现场试验,具有作业安全性高、时效快、效果好等优点,可为国内外类似中深井储层改造技术应用提供借鉴。The application of deflagration fracturing technology can generate high peak pressure,which can easily cause safety issues such as damage to construction pipes and cable breakage.These issues may lead to poor operational efficiency and low effectiveness when applying this technology in offshore oilfields.To solve this problem,a low burning rate,175℃high temperature resistance,and 72 MPa high-pressure deflagration fracturing propellant gunpowder was developed.It can meet the requirements of high-temperature and high-pressure reservoirs in deep wells in offshore oilfields.The optimized detonation fracturing technology for cable transmission in medium and deep wells has been formed.Thereby,the operation efficiency can be increased by at least 8 times compared with the oil pipe transmission.At the same time,it can effectively ensure the quality of propellant per meter of reservoir.High strength cable and cable wellhead BOP are used to solve a series of safety risk problems.The optimized multi-stage and fast detonation fracturing technology for deep wells in offshore oilfields was tested on-site in wells L-10a and X-B6.The test results show that this technology has advantages such as high operation safety,fast effiency and good effect.This paper can provide guidance for the application in similar medium and deep well reservoir at home and abroad.

关 键 词：海上油田 爆燃压裂 电缆 油管 中深井 

分 类 号：TE357[石油与天然气工程—油气田开发工程]