潮汐效应对海上油田试井解释影响及校正

The Influence of the Tidal Effect on the Well Testing Interpretation and Correction Study in Offshore Oil Field

严涛 湛祥惠 陈剑新

YAN Tao ZHAN Xianghui CHEN Jianxin

中国石油化工股份有限公司上海海洋油气分公司, 上海 200120

SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, China

潮汐效应对测试数据特别是压力恢复数据的影响有时会非常明显，为保留真实的储层压力变化特征，必须对所测得的压力数据进行校正，以消除潮汐效应的影响。此文分析了关井时间、潮汐大小、地层渗透率对试井曲线的影响。利用海上平台的设备间接获取潮汐数据，或者借用井点附近港口的潮汐数据，利用试井解释软件对实测的试井压力数据进行校正，尽可能消除潮汐效应的影响。对校正后的压力数据重新进行试井解释，取得了较好的拟合效果，对今后海上油田试井解释具有借鉴意义。

The influence of the tidal effect on the test data, especially the build-up pressure data, is sometimes very obvious. In order to retain the true reservoir pressure variation characteristics, the measured pressure data must be corrected to eliminate the influence of tidal effect. The influence of shut-in time, tidal size and formation permeability on well test curve have been analyzed. The tidal data is indirectly by using the equipment of the offshore platform, or the tidal data of the port near the well site is used, and the welltesting interpretation software is used to correct the measured well testing pressure data to eliminate the influence of the tidal effect as much as possible. The well test interpretation was performed on the corrected pressure data, and a good fitting effect is obtained, which is of great significance for well test interpretation in offshore oil field in the future.

https://doi.org/10.3969/j.issn.1008-2336.2019.01.035