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异常孔隙压力成因复杂,不同成因的孔隙压力计算所采用的方法也不尽相同,在实际生产应用中若未充分考虑压力成因会导致严重的错误。依据研究区异常压力成因,选用Bowers法对大港油田Y井进行了处理分析,发现实际的MDT测试压力与Bowers法计算的孔隙压力不一致,这种情况在国内的孔隙压力研究中并未出现过。针对这一异常,在资料收集和文献调研的基础上分析了异常的原因,找出解决该问题的方法,并利用油田研究成果加以证实,首次为解决这类问题提供了参考,也从另一方面说明考虑成因的孔隙压力计算方法是十分必要且重要的。同时,也为孔隙压力数据反演其成因提供了一种思路。
The causes of abnormal pore pressure are complex, and the methods used to calculate the pore pressure of different causes are not the same. In the actual production and application, failure to fully consider the pressure causes serious mistakes. According to the cause of abnormal pressure in the study area, the Bowers method was used to analyze the Y well in Dagang Oilfield. The actual MDT test pressure was inconsistent with the pore pressure calculated by the Bowers method. This situation did not occur in the study of pore pressure in China. In response to this anomaly, we analyzed the causes of anomalies on the basis of data collection and literature research, found out the solution to the problem and verified the results of oilfield research. This provides the first reference for solving such problems, It is very necessary and important to explain the calculation method of pore pressure considering the cause. At the same time, it also provides a kind of train of thought for inverting the causes of pore pressure data.