六西格玛在提高储气库封隔器坐封效果中的应用
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摘要
苏桥储气库是由枯竭油气藏型改建的,是目前世界上最深的储气库,与国内其他的枯竭油气藏型储气库相比,具有超深、高温、地层压力系数低,地层漏失量大的特点,这给注采完井的封隔器坐封带来巨大的挑战。在苏桥储气库前期的建设过程中,封隔器坐封成功率为71.3%。针对封隔器坐封成功率低的问题,利用六西格玛方法找出苏桥储气库封隔器坐封成功率低的主要因素,对工作流程及工艺改良优化,达到全面提高封隔器坐封成功率的目的。
Suqiao gas storage is rebuilt from depleted oil and gas reservoir, and is the deepest gas storage in the world at present.Compared with other gas storages rebuilt from depleted oil and gas reservoir in China, Suqiao Gas Storage has the characteristics of ultra-deep, high temperature, low formation pressure coefficient and large formation leakage, which brings great challenges to packer setting in injection-production completion. During the early construction of Suqiao gas storage group, the success rate of packer setting was 71.3%. Aiming at the low success rate of packer setting, the main factors affecting the packer setting success rate of Suqiao Gas Storage are found using Six Sigma method. The aim of improving the success rate of packer setting is achieved through the improvement and optimization of working process.
Suqiao gas storage is rebuilt from depleted oil and gas reservoir, and is the deepest gas storage in the world at present.Compared with other gas storages rebuilt from depleted oil and gas reservoir in China, Suqiao Gas Storage has the characteristics of ultra-deep, high temperature, low formation pressure coefficient and large formation leakage, which brings great challenges to packer setting in injection-production completion. During the early construction of Suqiao gas storage group, the success rate of packer setting was 71.3%. Aiming at the low success rate of packer setting, the main factors affecting the packer setting success rate of Suqiao Gas Storage are found using Six Sigma method. The aim of improving the success rate of packer setting is achieved through the improvement and optimization of working process.
引文
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[3]丁建东,王志彬,李颍川,等.苏桥储气库生产井井下节流技术合理气水比研究[J].石油钻采工艺,2012,34(1):78-81.
[4]王皆明,张昱文,丁国生,等.任11潜山油藏改建地下储气库关键技术研究[J].天然气地球科学,2004,15(4):405-411.
[5]吴奇.井下作业工程师手册[M].北京:石油工业出版社,2002.
[6]马林.六西格玛管理[M].北京:中国人民大学出版社,2004.
[7]罗振壁,曹蓁蓁.现代质量管理与六西格玛[M].海口:南海出版社,2005.