潮汐效应对DST测试资料的影响及校正技术研究

测试曲线证明潮汐效应可造成储层地层压力的波动,从而影响DST测试录取压力数据的质量,有时甚至非常明显,必须加以识别,必要时应利用潮汐变化数据对所测得的压力数据进行校正,以消除潮汐效应的影响,保留真实的储层压力变化特征。潮汐效应对DST测试数据影响的程度随压力计精度、井位、储层物性、测试时间、地层流体、测试方式等因素不同而不同。

Influence of Tidal Action on DST Testing Data and Its Emendation Tech Study

Well testing curve proves that tidal action causes fluctuation of formation pressure that influences the quality of measured pressure data of DST testing. Sometimes, it is so obvious that the effect should be identified and, if necessary, changing data of tide should be used to emend pressure data to eliminate tidal action effect to reserve the real changing property of formation pressure. The influencing degree is different with factors of electronic gauge accuracy, well site, formation property, testing time, formation fluid and testing way.