DAP 2015 Maarten middelburg HWT amp WEP February 25 2015 Delft History of drilling DAP 2015 FeBRUAry 25 2015 Ruffner Brothers 18061808 Spring Pole drilling 1000 BC History of drilling ID: 402049
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Slide1
Innovations in drillingDAP 2015
Maarten middelburg (HWT & WEP)February 25, 2015DelftSlide2
History of drilling
DAP 2015FeBRUAry 25, 2015
Ruffner
Brothers
1806-1808
Spring Pole drilling, 1000 B.C.Slide3
History of drilling
DAP 2015FeBRUAry 25, 2015
Colonel Drake, Titusville PA,1859
China,
Sichuan
Province, 200BC Slide4
Evolution
DAP 2015FeBRUAry 25, 2015Slide5
Better Control of process neededReduce Risk
DAP 2015FeBRUAry 25, 2015Slide6
simpler operations
DAP 2015FeBRUAry 25, 2015Slide7
Automation
DAP 2015FeBRUAry 25, 2015
1950’s ?
todaySlide8
INNOVATION
"
Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction
.“
EINSTEIN
DAP 2015
FeBRUAry
25, 2015Slide9
Efficiency up, cost down
Well Construction Cost plus Cost of Risk show stopper for many Geothermal projects
Need
for:
Higher
operating
efficiency
Reduce risk
Smaller
and cheaper rigs
Safer and less human
interaction
Wells with a longer life and less maintenance
DAP 2015
FeBRUAry
25, 2015
Time/Days
Depth
1000
2
000
3
000
0Slide10
ECI - Enhanced Casing Installation
Retrievable
& Directional casing
drill system
Well stabilized
Minimal stick-out (<1m
) even with M/LWD in BHA
Cable, drill pipe, pressure retrievable
Equipment inside casing i.e. low lost-in-hole risk & minimum
wear; composite casing
shoetrack
allows logging through casing.
Operated by rig crew (no external DD service)
DAP 2015
FeBRUAry
25, 2015Slide11
ECI Advantages
Fast tripping for BHA changes (cable or pressure assisted): Less handling increases personnel safety, saves time, reduces energy consumption and
reduces rig footprints
.
Drill
pipe vs ECI drilling:
smaller
and near flush
annulus:
Increased drilling efficiency:
better hole cleaning, simpler
mud system, lower mud weight,
less losses, less
reservoir
damage, better
cement jobs, dynamic kill method in case of influx.
Less
drill string failures and inspections
needed
Casing sits directly in place after drilling:
Less
open hole time, less hole quality problems, smaller
hole
being drilled, lean casing profile, immediate
contingency sidetracking
.
DAP 2015
FeBRUAry
25, 2015Slide12
ECI/RSS - Rotary
Steerable System
Development of a cost
efficient RSS
Drill
vertical
to
horizontal
section
with
the
same
casing
size
Point the bit technology -> precise steering, also in soft soils
Continous controlled from surface without down linking
Controls
integrated in
rig so
o
perated by rig, crew or remote:
no need for 3rd party directional drillers or steering tools required
Only standard MWD electronics are used downhole
DLS capability upto 5 degree/30m
Equipment sits inside casing so small stick-out (<1m) and well protected
DAP 2015
FeBRUAry
25, 2015Slide13
MPD - Managed pressure drilling
DAP 2015FeBRUAry 25, 2015
MPD - Managed pressure drilling system
Control
annular pressure close to balance
with formation
pressure
Maintain pressure control at all times (also in narrow pressure window)
Control ECD effect
MPD Advantages
Faster penetration
rates
Improved
wellbore
integrity
Reduced fluid loss and reservoir
influx
Avoid
reservoir damageSlide14
Simplify drilling process
Increase Process Efficiency:ECI Automated Rotary SteerableIntegrated Continuous MPDReduce rig (size) requirements (reduce dayrate
)
Reduce
hookload
>> composite casingReduce footprint
Reduce pump capacity (ECI)Reduce Energy requirementsReduce specialist services (and personnel) directional drilling (rig crew operates ECI)TRS (rig equiped with casing drive, power slips, torque m/u software)Eliminate topdrive
Winch
Casing
drive
Torque
arrester
DAP 2015
FeBRUAry
25,
2015Slide15
Roadmap for Geothermal
Everyone wants innovations but nobody wants to be the first (serial no.1 syndrome) >> Will DAP be first?HWT developments will lead to cost efficient drilling, but this will not happen overnight and we welcome operators to explore the possibilities with us.
I
mplement new technology and start realise savings.
Depth
1000
2
000
3
000
0
Time/Days
DAP 2015
FeBRUAry
25,
2015Slide16
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