managed pressure drilling presentation...
TRANSCRIPT
MANAGED PRESSURE DRILLING PRESENTATION
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A Continuous Circulating Concentric Casing System for Friction Controlled Drilling
The Gardes Energy Services MPD System Provides:
The down hole control of critical high-pressure, high-temperature wells while drilling using a combination of both standpipe and concentric annulus fluid injection to create frictional pressures on the return annulus and establish a desired equivalent circulating density (ECD) at depth to drill near balance, at balance or under balance in the formation.
During connections, the established standpipe injection volume used while drilling is added to the normal annulus injection volume on the back side, so the ECD remains constant, thus eliminating the bottom hole pressure surges associated with connections and minimizing connection gas influx.
This system overcomes the problems associated with shallow geotechnical hazards, well bore instability, lost circulation and narrow margins between formation pore pressure and fracture gradient.
High Temp., High Pressure MPD System with the patented dual fluid friction circulation.
Increased Concentric Casing circulating rate creates instantaneous control of reservoir inflow without the need for surface pressures or modification of drilling fluid densities.
Managed pressure drilling can overcome a variety of problems including shallow geotechnical
hazards, well bore instability, lost circulation, and narrow margins
between formation pore pressure and fracture gradient.
ECD management by planning and monitoring a Managed Pressure
window.
Narrow ECD window between pore pressure and bore hole collapse that can be maintained with Managed Pressure Drilling and the Gardes Continuous Circulation dual string technology
TVD
psi
STATICBHP = HH(MW)
AFP
CONTINUOUS CIRCULATING CONCENTRIC CASING
DYNAMICBHP = HH(MW) + AFP
Note: Using less-than-conventional mud density, well will be dynamically dead, but may be statically under-balanced
TVD
psipsi
STATICBHP = HH(MW)
AFP
CONTINUOUS CIRCULATING CONCENTRIC CASING
DYNAMICBHP = HH(MW) + AFP
Note: Using less-than-conventional mud density, well will be dynamically dead, but may be statically under-balanced
ADVANTAGES OF GARDES ENERGY SERVICES MPD CONCENTRIC
CASING CONTINOUS CIRCULATION SYSTEM
• Expands operating window between ECD and Frac Gradient.• Reduces excessive cost of circulating out connection gas.• Creates near constant and controllable ECD pressures.• Added well control during trips.• Continuous circulation during connections.• Can be run with all down hole deployment casing valves.• Contains all working pressures below rotary table not on rig floor.• System has an attached whip stock (up stock) for multi lateral
deviation or re entry.• System can be run in open or cased holes• System can be stripped out of hole to keep UB environment at
TD.• System can be run in straight, deviated or horizontal configured
well bores.• System is designed for all MPD situations, Under balanced or tight
ECD environments.
The purpose of MPD is to both ascertain the down hole pressure environment limits and manage the annular hydraulic pressure profile to fit within that window.
Figure 2: Bottom Hole Circulating Pressure (BHCP) vs. Liquid Injection Rates
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
0 50 100 150 200 250 300
Concentric Casing Fluid Injection (gpm)
Bot
tom
Hol
e C
ircul
atin
g P
ress
ure
(psi
)
100 gpm
120 gpm
140 gpm
160 gpm
Reservoir Pressure
Min. Target BHCP
Max. Target BHCP
Fluid Phase: Water Gas Phase: N/A
Casing Size: 5 1/2" O.H. Size: 4 3/4" D.P. Size: 2 7/8"
Min. Vel.: N/A
Min.PDM Vol.: 100 gpm Max PDM Vol.: 160 gpm
BackPressure: 30 psia Correlations: OLGAS
The Gardes Energy Services MPD System Includes Neo Tech 7 Flow Modeling:
Through Pre planned flow modeling, Down Hole Pressure while drilling tools (PWD) and Real Time on location Flow Modeling we are able to manage the Annular Hydraulic pressure profile to fit within any window.
Bottom Hole Circulating Pressure (BHCP) vs. Liquid Injection Rates. Actual Case History Showing BHCP Control with Minimal Pressure Oscillations
4750
4625
4500
4375
4250
4125
4000
3875
3750
3625
3500
3375
3250Vs
Inj 0 25 50 75 100 125 150 175 200 2250 250
The Gardes Energy Services MPD 4 Phase Surface System Real Time:_______________________________________________
MPD may be accomplished by many means including
combinations of backpressure, variable fluid density, fluid
rheology, circulating friction, and hole geometry
Wellhead for Continuous Circulation
BOP
Secondary Seal
Surface Casing
Intermediate Casing
Test Port
VR Threads
Wellhead for Continuous Circulation
BOP
Running Tool withAcme Thread
Carrier String HangerMicro-Annulus
Production Casing
Run inLockscrews
Carrier String
Test to Working Pressure
Surface Casing
Intermediate Casing
Wellhead for Continuous Circulation
Drill Pipe
Injection Down Drill Pipe
Injection IntoMicro Annulus
Fluid ReturnsCo-mingle
Wellhead for Continuous Circulation
Drill Pipe
Injection Down Drill Pipe
Injection IntoMicro Annulus
Fluid ReturnsCo-mingle
1. Drill Surface Hole2. Set Surface Casing3. Drill Protective Hole4. Set Protective Casing
5. Drill Liner Hole
6. Set liner
7. Run Tieback with Down Hole Deployment Valve with Ports above the DHDV
9. Drill to Zone of Interest
10. Run Carrier String with DHDV with or without Upstock 11. Drill out
12. Run Drill String with BHP Tools and Float Subs
13. Go underbalance with mud weight light enough to be 600 to 800 psi below BHP but with annular friction to maintain surface pressure less than 2,000 psi. Inject down the backside and inside of the tieback string taking returns inside of the carrier string.
8. Rig up RBOP, Programmable Choke, Surface Equipment, and test.
DHDV
DHDV
Carrier String
Ports
Click for each Operation
Drilling Operation
Protective and Tieback casing designed for production
Not necessary to drill out from the liner or the carrier string to go underbalanced.
Robert Gardesphone # 337/234-6544email: [email protected]