文96储气库达容达产技术与实践  

Technologies and practices on the storage capacity and production achieved in Wen 96 UGS

作　　者：鲍志强 BAO Zhiqiang(Sinopec GasStorageCompany,Zhengzhou,Henan 450000,China)

机构地区：[1]中国石油化工股份有限公司储气库分公司,河南郑州450000

出　　处：《天然气技术与经济》2024年第4期24-31,共8页Natural Gas Technology and Economy

摘　　要：针对制约文96地下储气库达容达产的主要因素(水侵影响、压力运行区间小),运用气藏工程的方法,对文96储气库实际生产运行进行了动态分析,在此基础上提出了相应的达容达产技术对策。研究结果表明:①该地下储气库达容达产提升技术包括边水控制技术、井网控制技术、不动管柱注采工程技术、增大压力运行技术等,通过新钻调整井和更新井进一步完善注采井网,以动用古近系沙河街组三段上亚段注采后期工作气量及边部未控储量,增加工作气量0.35×10^(8)m^(3);②利用室内岩心实验评价边水侵入后对气库库容、工作气量影响,优化生产运行制度控制边水侵入;③实施注采气工艺措施手段,解决气井积液、结盐等问题,进一步提升单井注采能力;④增大注采压力运行区间,满足气库设计上限压力27 MPa,下限压力12.9 MPa期间运行,达到可采气量最大化要求。结论认为,应用相关研究成果不仅可以实现该储气库在达容基础上的扩容,而且还可以为最终提升储气库工作气量提供技术参考。Using reservoir engineering approaches,we dynamically discussed an actual operation in Wen 96 underground gas storage(UGS)from two aspects of water invasion and small range in pressure run constraining both storage capacity and production achievement.And several countermeasures were also made for this achievement.Results show that(i)four technologies,which are conducive to achieving both storage capacity and production in this UGS,contain edge water control,well pattern control,injection-production engineering without tripping tubing string,and pressure enlargement.The injection-production well pattern is further improved by the newly drilled adjusting and renewal wells to draw upon not only working gas volume at the late injection-production period but marginal uncontrolled reserves in the upper submember of the Paleogene Shahejie 3 Member.As a result,the incremental working gas volume is 0.35×10^(8) m^(3);(ii)mechanisms on production run are optimized to condition the edge-water invasion after core experiments to evaluate this invasion affecting both storage capacity and working gas volume;(iii)some injection-production measures are taken to solve liquid accumulation and salt precipitation so as to improve injection-production capacity;and(iv)the injection-production pressure range is enlarged to meet the UGS's run under the designed maximum and minimum pressure of 27 MPa and 12.9 MPa on maximizing the recoverable production.It is concluded that the stated results contribute to expanding the capacity on the basis the capacity achievement to ultimately improve the working gas volume.

关 键 词：地下储气库 工作气量 注采能力 库容 达产 

分 类 号：TE972.2[石油与天然气工程—石油机械设备]