Procedures for leak-off and limit tests (LOT, LT, FIT)

Procedures for leak-off and limit tests (LOT, LT, FIT)

Procedures for leak-off and limit tests. Leak-off and Limit tests are carried out during the drilling phase of the well. The BOP is closed around the drillpipe, and the well is slowly pressured up, using mud. At the first sign of fluid leak-off into the formation the pumping is stopped. Leak-off tests are carried out until leak-off is observed; limit tests are carried out until a pre-determined test pressure is reached.

1 Introduction to leak-off test procedure

Leak-off and . . .