... present in the borehole transmits the P hyd to the formation that is exposed by the core barrel while coring, which would tend to displace gas (of density φ g ) deeper into the formation. However, in extremely low permeability, and with a coring process lasting only minutes, the r i in the core...

.... upstream oil & gas recovery sidewall percussion core core barrel july 29 halliburton core plug advancement core sample drilling operation information formation pressure symposium sidewall core june 24 hydrostatic pressure differential pressure rotary sidewall upgrade SPWLA 61st...

... a Schlumberger Resistivity-at- B iff M tool and a Texas A&M University wireline- retrieved core barrel and latching tool. This combined approach will allow for precise core-log depth calibration and core orientation within a single borehole, and without at pipe trip, providing both time saving and unique...

... core barrel slim hole drilling information fusion Wellsite Geologist evaluation well logging Upstream Oil & Gas Engineer log analysis Symposium Drilling Statoil exploration permeability spwla 34th geological question drilling operation porosity Baker Hughes INTEQ partnership...

... to improved equipment and more efficient operational techniques. Improvements in equipment include a basic redesign of the previous core barrels and use of a self-contained work trailer. Use of Stratapax type bits greatly enhanced core recovery while increasing drilling rates as much as ten fold. More...