CAJ | 학술논문

CO2驱工艺已成为提高低渗透油藏采收率的关键技术。在 CO2驱工艺管柱中，气密封隔器是关键部件。为保证 CO2驱工艺的气密效果，研制了双作用 CO2驱气密封隔器，主要由坐封机构、密封机构、锁紧机构、解封机构、丢手机构、卡瓦防回弹机构等组成，采用液压坐封和机械坐封双重作用，具备密封、承压、锚定、丢手、解封打捞等多种功能。该封隔器在中石化华东分公司进行了现场试验，7个月后套压仍然为0，表明封隔器承压性能良好。气密封隔器的研制为 CO2驱注气工艺技术的推广应用奠定了基础。
CO2구공예이성위제고저삼투유장채수솔적관건기술。재 CO2구공예관주중，기밀봉격기시관건부건。위보증 CO2구공예적기밀효과，연제료쌍작용 CO2구기밀봉격기，주요유좌봉궤구、밀봉궤구、쇄긴궤구、해봉궤구、주수궤구、잡와방회탄궤구등조성，채용액압좌봉화궤계좌봉쌍중작용，구비밀봉、승압、묘정、주수、해봉타로등다충공능。해봉격기재중석화화동분공사진행료현장시험，7개월후투압잉연위0，표명봉격기승압성능량호。기밀봉격기적연제위 CO2구주기공예기술적추엄응용전정료기출。
CO2 flooding has become the important method for enhancing oilfield recovery in low permeability oil reservoirs.In the process string,gastight packer is the key question.To ensure the gastight effect,the double acting gastight packer is designed.The packer is composed by set-ting mechanism,sealing mechanism,lath mechanism,unsetting mechanism,releasing mechanism, and slip mechanism and so on.The packer has several functions,such as sealing,pressure bearing, anchoring,releasing,unlocking and so on.Now,the packer has been used for 7months in the East-ern Branch Company.The casing pressure is 0,which indicates that the performance of packer is outstanding.The success of gastight packer provides the power for promoting CO2-flooding tech-nology.