专利检索 ap:("TOTAL SE") AND inv:"Siavash Ghabezloo" 第 1 页

1.

发明授权
Method for determining a time window in which a casing pressure test can be performed without damaging a cement sheath 有权

公开(公告)号：US11061011B2

公开(公告)日：2021-07-13

申请号：US16093920

申请日：2016-04-15

申请人： TOTAL SE

发明人： Christophe Urbanczyk , André Garnier , Jean Sulem , Siavash Ghabezloo , Nicolaine Agofack

IPC分类号： G01N33/00 , G01N33/38 , E21B47/005 , E21B47/117

摘要： The present invention relates to a method for determining a time window in which a casing pressure test can be performed without damaging a cement sheath. The time window is determined by: determining the hydration degree of the cement at a given time for a considered pressure and temperature values in the well; and then comparing the determined hydration degree to a predetermined value. If the determined hydration degree is below the predetermined value, then the casing pressure test can be done without damaging the cement.