摘要
根据储气库地质配产配注要求,优选出合理的气井生产管柱大小,是呼图壁气田改建地下储气库满足应急调峰配产能力以及长期稳定生产的重要保障。为优选气井管柱管径大小,针对不同大小的管柱,本文从下列因素出发来考虑:不同地层压力下的单井注采能力;注气时井口压力的大小;不同管柱的防冲蚀能力;不同管柱的携液能力以及管柱强度。在上述模拟计算的基础上,结合地质配产大小,对不同尺寸管柱的总体适应性进行了评价。研究表明,按照地质配产,储气库在最大应急产量与调峰产量运行时,若生产管柱管径较小(Ф88.9mm)将产生冲蚀危害,即采用较小管径的管柱,其临界冲蚀产量小于应急配产产量与调峰配产产量。而采用Ф114.3mm管径的管柱则能够完全发挥气井最大产能,消除冲蚀危害,确保储气库调峰配产与应急配产,同时其携水能力与管柱强度都满足。
According to the request of geological allocation and injection in gas storage,optimized the reasonable gas well’s string size in production process,the optimization is important guarantee to meet the needs of emergency production capacity and long-term stable production when Hutubi gas field reconstruc-ting into underground storage.In order to optimize the size of string,this article will analyse from the fol-lowing factors according to different tubing size:the single well injection-production ability based on differ-ent strata pressure;Note the size of gas wellhead pressure in gas injection;the different ability of string’s prevent erosion;the carry liquid ability and intensity of different string.At basis of the above simulative calculation and combining with different geological allocation,evaluated the overall adaptability of different string size.Research shows that,according to the geological allocation,the gas storage produces in emergency maximum output and normal operation,if the diameter of tubing is smaller(Ф88.9 mm),erosion hazard will be produced;At the same time,if the diameter of tubing isФ114.3 mm,gas well productivity can be fully exerted,erosion hazard will be eliminated,ensuring the geological allocation,while the capac-ity of carrying water and string strength all are meeted.
作者
刘元爽
陈锦风
张鸿宇
LIU Yuan-shuang;CHEN Jin-feng;ZHANG Hong-yu(College of Petroleum Engineering,Guangdong University of PetrochemicalTechnology,Maoming 525000,China)
出处
《内蒙古石油化工》
CAS
2021年第7期11-13,91,共4页
Inner Mongolia Petrochemical Industry
关键词
储气库
管径
冲蚀
配产
The gas storage
Pipe diameter
Erosion
Allocation
