摘要
针对陕224井区储量、储层连通性、边界封闭性不确定的问题,运用压力恢复试井与生产动态分析相结合的方法,通过压力恢复曲线拟合,确定近井地带特性参数,如井筒储集系数、表皮系数,并获得4组储层及边界解释模型;利用流量标准化拟压力曲线拟合校正了解释模型,求取到气藏关键参数,如地层系数、径向复合半径、流度系数比、储容系数比、边界位置,计算井区共动用储量10.43×108m3。研究表明,试井与生产动态分析相结合的方法,弥补了资料周期短、精度低的缺陷,克服了解释模型不全面、不唯一的弊端,获得了完整准确的井区气藏模型。
For the problems associated with the uncertainty in reserves,reservoir communication and boundary confinement in Well Block Shan- 224,the property parameters such as borehole storage factor and skin factor in near wellbore zone are defined through pressure build- up curve fitting by means of pressure build- up well test combined with production performance analysis,and a model for interpretation of 4 sets of reservoir and boundaries; the interpretation model is corrected by use of flow rate normalization and pressure curve fitting,key parameters of gas reservoir are achieved,such as formation factor,radial composite radius,ratio of mobility coefficient,storativity ratio and boundary position,and as a calculation result,the producing reserve in the well block is 10. 43 × 108m3in total. It is shown from the research work that,the combination of well test and analysis of production performance can compensate the information defects such as short cycle and low accuracy,overcome the shortcomings of incomplete and non- unique interpretation model,and a complete and precise model has been established for the gas reservoir in the well block.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第2期102-106,156,共5页
Special Oil & Gas Reservoirs
基金
中国石油大学(北京)基本科研业务费项目"多级压裂水平井生产动态分析与评价技术研究"(KYJJ2012-02-27)
关键词
试井解释
生产动态分析
储层连通性
边界封闭性
储量评价
陕224井区
well test interpretation
analysis of production performance
reservoir communication
boundary confinement
reserve evaluation
Well block Shan-224
