SHALE INHIBITION
For troublesome shale sections with seepage problems or sloughing shale problems a
minimum of 2-8 ppb of CONTONE for each barrel of active mud should be added prior to
entering the suspect zone. This should be maintained by the minimum daily additions of 0.25
ppb of treated active drilling fluid. Any new hole drilled requiring the building of additional
drilling fluid should be treated with 2-8 ppb of CONTONE and 0.25 ppb additions resumed
thereafter. New drilling fluid built consists of fluid for lost returns, dilution, and solids control
equipment.
TORQUE & DRAG / ROP ENHANCEMENT
For decrease in torque and drag or increase in ROP, additions of CONTONE may be
added initially in the form of a sweep. For sweeps isolate 50 to 100 bbls of active drilling fluid
in the slugging tank. Add 8 ppb of CONTONE to the slugging tank and sweep the well bore
with the desired amount of the sweep needed for immediate results. While sweeping the well
bore begin additions of 2-8 ppb of CONTONE to the active system followed by a maintenance
plan for continued results.
SEEPAGE CONTROL / MICRO FRACTURES
CONTONE has a micron particle size distribution of 3-75. CONTONE is a non-soluble
product and is non-florescent. For seepage control and the sealing of micro fractures the
addition of 2-8 ppb of CONTONE added directly to the system provides excellent coverage
and has proven to be a superior sealant. Daily maintenance at original application should be
maintained.
HPHT REDUCTION
CONTONE in field applications has provided phenomenal reduction in hard to reduced
HPHT’s. The optimum application for reduction varies from 2-6 ppb with no more than 6 ppb
being needed. CONTONE has proven to reduce the HPHT in OBM as well as WBM’s as
much as 99.9% from original HPHT.
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