摘要
海上油田油井测试时间较短,在进行初期产能评价时,需要校正测试时间对产能的影响,目前通常采用类比法或根据经验确定测试时间校正系数。依据不同压力波传播阶段流体的渗流规律,推导出了利用油井稳定(拟稳定)状态时采油指数与油井测试时采油指数相除得到测试时间校正系数的计算公式。实例验证结果表明,本文方法计算的测试时间校正系数与实际情况吻合较好,具有较大的实际应用价值。
During initially evaluating deliverability of an offshore oilfield,it is needed to calibrate the impact of oil-well testing time on the deliverability due to the shorter testing time.Currently,the calibration coefficient for well testing time is usually determined by using an analogy or by the experiences from reservoir engineers.Based on the regular pattern of fluid flow during propagation of different pressure waves,an equation to calculate calibration coefficient for well testing time has been derived,i.e.the calibration coefficient = productivity index（PI） of a well in steady（pseudosteady） state divided by productivity index（PI） of the same well during testing.It is indicated by the results of example validation that the calibration coefficient calculated by this method is quite good in accordance with the real situation and valuable in practical application.
出处
《中国海上油气》
CAS
北大核心
2010年第6期391-393,共3页
China Offshore Oil and Gas
关键词
海上油田
油井
测试时间校正系数
计算方法
offshore oilfield
oil well
calibration coefficient for well testing time
calculation method
