Horizontal Drilling – Technology Review, Current ... · PDF fileHorizontal Drilling...
Transcript of Horizontal Drilling – Technology Review, Current ... · PDF fileHorizontal Drilling...
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Horizontal Drilling – Technology Review, Current Applications, and It’s Future in Developing Kansas’
Petroleum Resources
W. Lynn WatneyKansas Geological Survey
Lawrence, KS [email protected]
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Outline• 1. Types of horizontal wells• 2. Basic engineering and geology that define
drainage radius in horizontal wells, design, and evaluation
• 3. Statistics on current horizontal drilling in Kansas and types of reservoirs being drilled with laterals
• 4. Case study in Kansas – New lateral in Huntondolomite, Unger Field, Marion County
• 5. Expectations for horizontal drilling in the future
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1. Types of horizontal wellswww.horizontaldrilling.org/
Joshi Technologies International, Inc.
Niobrara Chalk (NW KS)
• Arbuckle, Hunton• Mississippian, Morrow
• Coal Bed Methane• Southeast Kansas Cherkee
Chattanooga Shale (OK)
Naturally fractured reservoir – Gas-bearing shale
Completion vertical well with induced lateral fractures horizontal well with induced vertical fractures
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History of Horizontal Wells
• Short Radius• Medium radius, downhole motors, 1985• Re-entry drilling, 1995• Coil tubing drilling – underbalanced• Rotary steerable system• Fracture stimulation of horizontal wells
Joshi Technologies International, Inc.
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Extended Reach – Option 1Water-Jetted Laterals
Comparing Radial Drilling Penetration vs. Conventional Perforation
Average: 20-60”
Up to 300 ft.
Conventional Perforation
Average 20”-60”
Radial DrillingPerforation
Average Up to 300 ft.
Radcan Energy Services, Inc.
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Extended Reach – Option 2Coil-tubing conveyed horizontal lateral
--First Highly Efficient Hybrid CT RigBuilt and Operating on U.S. Soil
Photo courtesy Tom Gipson, Advanced Drilling Technologies, LLC
World Oil Awards 2005
New Horizons Nominee
About 300,000 feet of hole in 7 monthsNiobrara Chalk, NW Kansas
Colorado Oil & Gas Conservation Commission2005 Operator of the Year
NomineeAdvanced Drilling Technology, Yuma, CO
& Rosewood Resources, Inc.
•Rapid mob/demob•Four trailer loads•2800 ft completed in <24 hrs•Important in Niobrara play >1 TC•Lateral drilling capability
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Extended Reach – Option 3Lateral Drilling with Conventional Tools
• Minimal technical risk – mature technology used world wide– Tight directional control – Unlimited lateral length – to drain multiple karst
compartments• Cost-effective in mature field environment
– Relative ease to contract conventional rigs – low mobilization costs
– Easy to get directional tools, drillers, and, tool push logging tools from OK
• Highest operator comfort – least steep learning curve
• Post-drilling tool-push logging helps quantify production potential of the horizontal well and assess level of success
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Horizontal Drilling in KansasDefinitions & Terms
MWD - “Measurement While Drilling”Azimuth, Inclination, Measured Depth
LWD - “Logging While Drilling”most standard vertical hole e-logs
PIF - “Productivity Improvement Factor”multiplier of production increase over offset vertical wells
Common terms used to describe horizontal wells
Gerlach (2000)
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Horizontal Well Planning
• Well plan• Target • Geosteering• Formation
evaluation• Completion• Drilling tools,
methods -limitations, costs
• Production equipment
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HalliburtonGABI™ Sensor - Gamma/At-Bit InclinationAzimuthal gamma ray – detect and avoid shale roof rock at top of the oil reservoir
Measurement While Drilling (MWD)
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Completion of Horizontal Wells
• Open hole• Slotted liners• Case and perforate – to isolate oil and gas
bearing intervals• Install sensor and valves in multilaterals to
control flow as laterals water out • Acidizing• Fracture stimulation
Sidetrack to top of pay zone
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Lateral drilled in Chester sandstone most recently released report
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Multilaterals with conventional horizontal drilling technology
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Idd el ShargiOil Field,Qatar
J. Rush, KGS
Example of Complex Laterals
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Idd El Shargi, J. Rush -KGS
300 ft thick limestone reservoir with oil accumulation on broad structural
trap
Laterals drilled from offshore platforms
Field produces ~135,000 BOPD
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Idd El Shargi, J. Rush -KGS
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Idd El Shargi, J. Rush -KGS
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2) Basic engineering and geology that define drainage radius in horizontal
wells, design, and evaluation
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Joshi Technologies International, Inc.
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Note extended drainage area off ends of the lateral
Joshi Technologies International, Inc.
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Models used to predict recovery of a horizontal well
DRILL HERE!
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Pf2A-24 - Prod Loss (Interferrence)Pf2A-24 Pf2A-24Cum Oil, BO Cum Oil, BO Pf2A-24No Infill Infill E-W Prod loss, BO
Jan-2003 28,362Jan-2006 53,181 42,952 10,229Jan-2008 64,475 47,448 17,027Jan-2013 83,750 53,537 30,213
Ummel 1 (U1) - Prod Loss (Interferrence)Ummel 1 Ummel 1Cum Oil, BO Cum Oil, BO Ummel 1No Infill Infill E-W Prod loss, BO
Jan-2003 220226Jan-2006 226409 224401 2008Jan-2008 229907 226572 3335Jan-2013 237034 230903 6131
Production Gain from Infill EW (Infill)Year end Cum Oil, BO Cum Wtr, BW
2003 22,237 320,3352004 34,569 627,9662006 50,137 1,226,5402008 59,675 1,798,0902013 71,272 2,847,120
Ness City North Horizontal Infill Well – Production Potential, Drainage & Interference on Existing Wells
Simulation modeling of drainage and oil recovery from horizontal well -- Ness City North Field
Horizontalwell
Oil saturationbefore horizontal
well drilled (Sept ’03)
Oil saturationafter horizontal
well drilled (Sept. ’13)
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Reservoir properties strongly affect how horizontal wells behave
Drilling Outcome -- Ness City North
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3. Statistics on current horizontal drilling and types of reservoirs being drilled with
laterals
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Joshi Technologies International, Inc.
Kansas 86 3 3 36 16 11
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Horizontal Wells Drilled 2000-2010
Completion Dates - Horizontal Wells Kansas
05
10152025303540
1-Jan
-841-J
an-87
1-Jan
-901-J
an-93
1-Jan
-961-J
an-99
1-Jan
-021-J
an-05
1-Jan
-08 MoreFr
eque
ncy
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Horizontal Wells in Kansas (October 2010) – Mississippian highlighted
ArbuckleMorrow/Chester
Bradshaw &Hugoton FieldsGas Wells(Chase Group)
Cherry Creek & Goodland Gas Areas(Niobrara)
Coal-bed methaneWells (Cherokee Group)
Warsaw & Osage (Mississippian)Dolomite and chert
Osage (Mississippian)Cherty dolomitic oil reservoirs
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HORIZONTAL WELLS IN KANSAS Wells with
Total 238 oil productionproducing oil wells 20
Success rate (%) 8.4
Niobrara chalk shallow gas 61Chase-Council Grove 10Lansing-Kansas City 2 0Cherokee CBM 15McLouth Sandstone 9 0Morrow-Chester 16 4Mississippian carbonates 22 6Viola 7 0Arbuckle 8 3
403,430 bbls -- Best horizontal well drilled in Kansas to date – an infill well drilled in 1997 by Ensign Operating Company in Mississippian Warsaw Dolomite in Aldrich NE Field, Ness County -- 1400 ft lateral drilled and completed open hole by Halliburton services. initially, low productivity due to mud damage; cleaned up with acid for excellent well
October 2010
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4. Case studies in Kansas - Mississippian Warsaw dolomite reservoir in Ness
County and Hunton dolomite in Marion County
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Unger Field Marion County, Kansas
Unger Field
American EnergiesCorporation
Alan DeGood
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NW
SE
-1420 ft (O/W
)
Section 19Unger Field Structure map and cross section indexContour Interval = 5 ft
Upper blue number = thickness of Hunton reservoir
Original O/W ~-1420 ft
Sec 19-T 21S-R3E
0
200
400
600
800
1000
1200
1400
1600
1/1 /1955 1/1/1956 12/31/1956 12/31/1957 12/31/1958 12/31 /1959
DST
SI B
HP,
psi
Bottom hole pressure derived from DST
DST data from:Slocombe 5, 6Mellot 4Rood 1, 2, 3, 4, 5, 7
Proposed Location ofLateral
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900 ft
NW-SE Structural Cross Section #1
Hunton reservoir
KinderhookChattanoogaShale
Porous Mississippianlimestone/chert
SP-Caliper-Microlog curves shown – SP depicted in color delimiting magnitude
Target zone for lateralParalleling cross section
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Horizontal Drilling Plan – Unger Field, Marion County, Kansas
1,700 ft lateral
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Design and well site supervision on over 300 horizontal wells drilled including multi-laterals in Oklahoma Hunton, Arbuckle, Barnett Shale and others – up to 8,000’ lateral displacement
Focus Gamma (sensor)-- To avoid shale caprockabove reservoir
Partners in Unger Field Drilling
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5. Expectations for horizontal drilling in the future
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Hugoton Embayment Hugoton Gas FieldChester, Morrow sandstones,St. Louis limestone
Central KansasUplift Lansing-Kansas CityArbuckle
Cherokee BasinCBMPennsylvanian oil sands
Pratt AnticlineMississippian Chert Oil Reservoirs
West Flank CKUMississippian Osage, Warwawchert and dolomite reservoirs
Northwest ShelfShallow gasNiobrara Chalk
Sedgwick BasinMississippian Viola & Hunton
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Producibility problems addressed with horizontal wells
• Mature fields – often have high water cut, strong water drive• Current production practice – use conventional vertical wells• Limited lateral drainage in vertical well• Significant variation in producibility between adjacent wells• Residual pockets of oil possibly located in the interwell areas outside
the drainage reach of vertical wells• Often reservoirs are compartmentalized (karstification and
subcropping strata)– Wells located in small compartment have short production life, uneconomic
cumulative volumes– Wells located (by chance) in large compartments – long production life
• Effective pay zones in Kansas are thin (less than 20 ft)• Limited resource-reach of operators – financial and technical
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Proposed solution – cost-effective extended reach horizontal lateral
• Has to be cost-effective – drilling, logging, and completion• Has to be have minimal technical risks – for independent
operators to be interested and apply for infill drilling• Must have tight directional control to --
– Reach and drain targeted pockets of remaining reserves in the inter well region
– Have trajectory constrained within thin pay• Would have significant added advantage, if one targeted well
could drain multiple karst compartments• Needs to produce economic volumes under constrained
drawdown in order to reduce water cut– Low water cut – helps keep oil relative permeability high in the near well
region– Results in better sweep of residual oil