Effects of using WBM instead of SOBM in conducting LOT and FIT

Dear all,

In drilling one of onshore wells, WBM (water based mud)which was used to drill 17½ hole section was used to carry out FIT (formation integrity test) in stead of SOBM which will  be used to drill subsequent hole section (12¼"). What is the effect of using WBM instead of SOBM on the result of the test? Granted that LOT/FIT procedure differs from operator to operator,what is best practice in conducting FIT/LOT (leak off test)?
 
Thanks and regards,
Clinton.
5 Answer(s)

Support Spread

We need the support of our members to keep our forum online. If you find the information on spread useful please consider a donation

donate