CONFI-DRILL for Offshore Drilling - Scomi Group Berhad

shrillsmoggyΠετρελαϊκά και Εξόρυξη

8 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

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DRILLING FLUIDS
BACKGROUND

To improve ROP and hole stability through predominantly reactive shales in the
build-up section of these offshore wells where angles are increased from near vertical
to 85 – 89º, the operator had been using glycol-based WBM with reasonable success.
As rig and operating rates have increased, there was a need to further improve
drilling performance and reduce the drilling days in this interval, from 12 – 14 days
per well.
SCOMI OILTOOLS SOLUTION

In late 2007, the operator selected Scomi Oiltools to provide a cost effective SOBM
system,
CONFI-
DRILL
. Scomi Oiltools developed an economical low temperature /
low density emulsifier
CONFI-TEC P
as the primary emulsifier and
CONFI-TEC SV
,
a secondary emulsifier / rheology modifier for this system. While
CONFI-TEC P
is
indicated for temperatures up to 250 ºF (121 ºC) and densities below 12.0 lb/gal

(1.44 SG), the system has been successfully lab tested to 300 ºF (149 ºC).
RESULTS

Average drilling days per interval have been reduced by 50% from 12 – 14 days to

6 – 7 days per interval.
It is now possible to drill wells with low hydrostatic pressures, 9 – 9.5 lb/gal
equivalent (1.08 – 1.14 SG) using 40 – 50 lb/bbl of calcium carbonate, a practice
which was uneconomical with WBM.
Since March 2008, the operator has successfully drilled 18 wells using the

CONFI-
DRILL
system, resulting in considerable savings in time and cost. Two wells
with low pressure gradients were also successfully drilled with 9.2 – 9.4 lb/gal

CONFI-
DRILL
.
BENEFITS




Improved emulsion stability, better rheological properties.


Enhanced ROP, reduced well construction costs.
For additional information, contact: drillingfluids@my.scomioiltools.com
CONFI-
DRILL
for Offshore Drilling
Pakistan
CASE HISTORY DF 08 |

22
CREATING
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