现代产量递减分析方法求取安达凹陷试采气井储层参数-《油气井测试》

文章信息/Info

Title:: Using modern production decline analysis to obtain
the gas well reservoir properties in Anda sag

作者:: 刘宝华1; 杨东2; 1.中国石油大庆油田有限责任公司试油试采分公司黑龙江大庆 163412
2.中国石油大庆油田有限责任公司勘探事业部黑龙江大庆 163000

Author(s):: LIU Baohua1; YANG Dong2; 1.Oilfield Testing Technology Service Branch, PetroChina Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163412, China
2.Exploration Division, PetroChina Daqing Oilfield Co., Ltd., Daqing, Heilongjiang 163412,China

Keywords:: ; Anda sag; production test; gas well; production decline; curve fitting; transit well testing; productivity evaluation; singlewell reserve

摘要:: 安达凹陷X1井试采生产180 d，后期关井时间较短，测得压力恢复数据不符合资料录取要求。现代产量递减曲线分析方法，以试采期间取得变井底压力与相对稳定产量动态数据为依据，对数据进行规整化处理，结合静态地质参数，对储层进行评价。X1等6口试采井实例应用，获得了渗透率、开采年限及废弃时累积产量等参数，在试采气井产能评价中具有较好的适用性。为进一步减小拟合过程中的误差，该方法应结合不稳定试井资料进行相互解释验证，为气井动态规律认识和试采方案调控措施制定提供科学依据，为指导下一步单井控制储量评价提供技术支撑。

Abstract:: Due to the relatively short shutin period after 180day production test of Well X1 in Anda sag, the pressure buildup data could not meet the data acquisition requirements. To obtain the relatively steady production history and variable bottomhole pressure history in the production test, the modern production decline analysis can be used to normalize data and evaluate reservoir by combining with static geological parameters. The reservoir permeability, production life and cumulative production when being disposed were gained in the field application of 6 production test wells, which shows a favorable applicability in the productivity evaluation of production test well. Transient well test data should be combined for mutual interpretation and verification to further reduce the fitting error. This research could provide certain scientific basis for the understanding of gas well production performance and development of production test program, and could also provide certain technical guidance for the further singlewell controlled reserve evaluation.