Poly Plug OCSG-1294 D25 S/T #1

Well Information

South Pass Block 62, Gulf of Mexico
7″ O.H. -3236′
Synthetic OBM
9.9 ppg
115 F
1 hr


Scenario: Drilling in salt and loosing circulation from a rubble zone above.
Dynamic loss rate was 150 bbls per hour. With the bit approximately 125’ above
the casing shoe a 50 bbl Poly Plug pill was displaced to the bit at a rate of 4-5
bpm. The Hydril was closed and the Poly Plug pill was bullheaded into the
formation at a rate of 1-1.5 bpm, the bit was cleared by 2 bbls and the squeeze
was held for 8 hours. After 8 hours the Hydril was opened and circulation was
established with full returns.


Drilling commenced to TD without further incident of loss circulation.