transcript
- 1. SUMMER 2014 OVERVIEW A Presentation by Matthew Hobbs and
Derrick Shields
- 2. AGENDA Utica Shale Play Basics Drilling Completions Bond
Logs Toe Preps Hydraulic Fracturing Drillouts Production Multi-Well
Sunk Costs Plunger Lift 2
- 3. UTICA SHALE PLAY BASICS Depth: 7,000 ft - 8,000 ft Over 5
Empire State Buildings underground! Thickness: 70 1000 ft
Production began in 2011 Over 300+ producing wells 7 drilling rigs
in operation Why Horizontally Drill? Cost of $7 million per well
2:1 cost ratio vs. vertical 3.2:1 production increase vs. vertical
Not limited by thickness TypicalWells Vertical Depths: ~7500 ft
Measure Depth: ~13,000 ft 15,000 ft 3
- 4. DRILLING Nomac 71: Yoder North Pad Patterson 329: Holmes Pad
4
- 5. DRILLING After pad construction and before drilling rig in
place, third party installs: Cellar 8 - 10 diameter 8 deep Enables
the production tree to be accessible at ground level Conductor 20
diameter 50 - 100 deep Stabilizes wellbore from caving Cellar
Conductor 5
- 6. DRILLING Takes 4-7 days after rigging down at previous set
up at current pad Costs about $300,000 to move and set up rig More
than just rig set up 2/3 of 300 x 400 pad covered with containment
Rig Mobilization 6
- 7. DRILLING RIG PAD LAYOUT Mud Circulation Rig Casing
Generators Mud Pumps Air Compressors Dog House Fluid Storage
Trailers Drilling Rig Equipment Layout 7
- 8. DRILLING Basic Principle Multiple layers of casing and
cement Conductor Surface Intermediate Production Start large then
decrease in size Visually looks like an extended telescope In
Utica, casing sizes and approximate depths are constant Varies
depending on play 8
- 9. DRILLING Drill Bits Types: Tri-Cone Polycrystalline Diamond
Compact Air Hammer Bit 9
- 10. DRILLING Fluids types used Air Dusting Misting Foam Faster
Rate of Penetration (ROP), Used from spud date to mud up point
Water Based Mud Used above US ground water (USGW) protective depth
Provides hydrostatic force to prevent kicks above USGW Synthetic
Oil Based Muds Similar to OBM, more biodegradable Low formation
damage Wellbore stability More environmentally friendly
(biodegradable) Expensive Oil Based Muds Used below US ground water
(USGW) protective depth Low formation damage Wellbore stability
Less environmentally friendly Expensive 10
- 11. DRILLING Mud Circulation Mud Pumps Stand Pipe Annulus
DrillPipe Kelly Hose Separate Cuttings, Clean Mud Tanks 11
- 12. DRILLING Parameters Recorded Hole depth Bit depth Hook Load
(klbs) Pump Pressure Rate of Penetration (ft/hr) Torque (ft-lb)
Weight on Bit (WOB) Differential Pressure Revolutions per minute
(RPM) Strokes per pump Fluid gain/loss Monitoring System 12
- 13. DRILLING Isolates oil, gas, and water zones from wellbore
Float shoe guides casing through well bore Float collar One way
valve that floats casing into well Prevents U-tubing of Spacer
fluid Top plug and bottom plug Displacement fluid Centralizers
Cementing the Casing Circulating Drilling Fluid Pumping Wash,
Spacer and Cement Slurry Displacement Displacement Completed Job
13
- 14. DRILLING Blowout Prevention Blind Ram Pipe Ram Spacer Spool
Kill Line Choke Line Annular Mouse Hole 14
- 15. COMPLETIONS Various Locations 15
- 16. BOND-LOGGING Peterson Pad 16
- 17. BOND-LOGGING Night cap installed and turned over to
completions.Tubing head and bottom master valve installed. Attached
to wireline and dropped into hole at a rate that allows for
accurate measurements to be taken Can either be pumped down with
pressure or fall due to gravity Lateral sections can only be
reached if pumped down Tool Used Temperature Probe Stabilizer Gamma
Ray Probe Stabilizer Stabilizer CasingCollar Locator (CCL) Cement
Bond Log (CBL) Gamma Ray Spikes in shale formations Cement Bond Log
(CBL) Uses acoustics to check the integrity of cement bond to
casing Casing Collar Locator (CCL) Detects changes in magnetic
field due to thickness change in casing collars 17
- 18. BOND-LOGGING Interpretation Temperature Marker Joint
Variable Density Log (VDL) Cement Bond Gamma Ray 18
- 19. TOE PREPS Pitts Pad 19
- 20. TOE PREPS Alternative toTubing Convey Perforations (TCP)
Features hydraulically operated sliding sleeve Ran in production
casing after drilling operations completed Provides means of
establishing circulation to facilitate plugging and perfing first
stage of frac operations 200psi) or explosion to shoot a pressure
wave and determine liquid level Plunger tracking - determine fall
velocity of plunger Slick line and braided line - clear tubing with
broach, verify clear path with ring gauge, drop bumper springs, and
perform fishing job Swabbing - way to free up loaded well U-tubing
- utilize pressure in one well to unload a neighboring well 39