santos cwd case study rev1 - spread - forum · volant mlt rings were installed on all joints ! 2 x...

!!!!!!!!!!!!!!!!!!!!!!!!!!The!Top!Drive!&!CRT!Specialists! !

Aug/Sept 2015

Drill Quip Pty Ltd “Casing while Drilling” (CwD) Case Study

Drill!Quip!Pty!Ltd!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!5!Oaklands!Road,!Somerton!Park,!SA!5044,!Australia!PH:!(+61)!8!8295!1777!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PO!Box!794,!Glenelg,!SA!5045,!Australia!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!www.drillquip.net!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!

Objective: To drill in 9-5/8” surface casing on four (4) oil wells from surface to depth’s ranging from 1300’ to 1800’ for the following reasons:

! Reduce drilling cost ! Improve drilling efficiency ! Improve drilling performance ! Removing stuck pipe risks ! Minimize fluid losses ! Maximize the rig and rig crew capabilities for “off-site” works completed where normal

drilling operation would not allow ! Reduce flat spots in the drilling curve ! Create improvements for clients future drilling programs

Designing: Reservoir Drilling Solutions (RDS) and Drill Quip Pty Ltd designed the Casing Drilling program. The design was manufactured around client’s formation data and equipment availability. The casing, casing drilling bit and floats were supplied from clients inventory. Our program focused on “Torque and Drag” along with “Wear and Fatigue” of the casing and using the ideal placements of HydroForm™ Centralizers to minimize any side loading torsional wear. Operational: Well #1

! Commenced drilling well @ 13:45 hrs. on August 28th 2015 ! Completed drilling well @ 14:50 hrs. on August 29th 2015 ! Depth drilled 1,450’ RT ! CRT Used: Drill Quip’s Volant CRTi3-7.0 ! Drill Quip’s 4-Ton Extendable Links not used ! Casing used: 9-5/8” K55 36# ! Bit Used: Baker Hughes EZCase™ - 12-1/4” EZC504 (9.625)

o Dressed with 4 x 14 jets ! Volant MLT Rings were installed on all joints ! 2 x single Halliburton floats above Joint #1 ! Centralizers: 8 x Volant HydroForm™ 9.625” x 12” (non-rotating) ! Drilling Fluids: Water based PHPA/KCL ! RPM used: 90 ! GPM used: 650 ! SPP observed: 1,100psi (@ TD while drilling) ! SPP: observed 1,050psi (off bottom) ! Torque observed: 4k ft/lbs on bottom ! Torque observed: 1k ft/lbs off bottom ! Drag observed: 74k upstroke (pumps off), 74k down-stroke (pumps off)

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!The!Top!Drive!&!CRT!Specialists!

Aug/Sept 2015



!!!!!!!!!!!!!!!!!!!!!!!!!!!!www.drillquip.net!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!

Well #2

! Commenced drilling well @ 14:00 hrs. on September 6th 2015 ! Completed drilling well @ 10:00 hrs. on September 7th 2015 ! Depth drilled 1,304 RT ! CRT Used: Volant CRTi3-7.0 ! Casing used: 9-5/8” K55 36# ! Bit Used: Baker Hughes EZCase™ - 12-1/4” EZC504 (9.625)

o Dressed with 4 x 12.5 jets ! Volant MLT Rings were not installed ! 2 x single Halliburton floats above Joint #1 ! Centralizers: 8 x Volant HydroForm™ 9.625” x 12” (non-rotating) ! Drilling Fluids: Water based PHPA/KCL ! RPM used: 100 ! GPM used: 500 ! SPP observed: 980psi (@ TD while drilling) ! SPP: observed 960psi (off bottom) ! Torque observed: 2k ft/lbs on bottom @ 100rpm ! Torque observed: 1k ft/lbs off bottom @ 100rpm ! Drag observed: 65k upstroke (pumps off), 65k down-stroke (pumps off)

**Note: To view the complete Pason “read-out while drilling” please view attachment #2

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Aug/Sept 2015




Well #3

! Commenced drilling well @ 11:00 hrs. on September 15th 2015 ! Completed drilling well @ 15:00 hrs. on September 16th 2015 ! Depth drilled 1,815’ RT ! CRT Used: Volant CRTi3-7.0 ! Casing used: 9-5/8” K55 36# ! Bit Used: Baker Hughes EZCase™ - 12-1/4” EZC504 (9.625)

o Dressed with 4 x 11 jets ! Volant MLT Rings were installed on all joints ! 2 x single Halliburton floats above Joint #1 ! Centralizers: 11 x Volant HydroForm™ 9.625” x 12” (non-rotating) ! Drilling Fluids: Water based PHPA/KCL ! RPM used: 100 ! GPM used: 580 ! SPP observed: 1,850psi (@ TD while drilling) due to blocked nozzle ! SPP: observed 1,830psi (off bottom) due to blocked nozzle ! Torque observed: 3k ft/lbs on bottom @ 100rpm ! Torque observed: 1k ft/lbs off bottom @ 100rpm ! Drag observed: 80k upstroke (pumps off), 76k down-stroke (pumps off)

Well #4

! Commenced drilling well @ 07:00 hrs. on September 23rd 2015 ! Completed drilling well @ 04:00 hrs. on September 24th 2015 ! Depth drilled 1,314’ RT ! CRT Used: Volant CRTi3-7.0 ! Casing used: 9-5/8” K55 36# BTC ! Bit Used: Baker Hughes EZ-Case™ - 12-1/4” EZC504 (9.625)

o Dressed with 4 x 11 jets ! Volant MLT Rings were installed on all joints ! 2 x single Halliburton floats above Joint #1 ! Centralizers: 8 x Volant HydroForm™ 9.625” x 12” (non-rotating) ! Drilling Fluids: Water based PHPA/KCL ! RPM used: 120 ! GPM used: 713 ! SPP observed: 1,660psi (@ TD while drilling) ! SPP: observed 1,655psi (off bottom) ! Torque observed: 2-3k ft/lbs on bottom @ 120rpm ! Torque observed: 1k ft/lbs off bottom @ 120rpm ! Drag observed: 72k upstroke (pumps off), 66k down-stroke (pumps off)

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Aug/Sept 2015




Comments:

• Standard losses occurred during the sand intervals and controlled by reducing ROP and pumping LCM pills.

• Clays that created bit balling were controlled with KCL. Bit balling was not observed. Cuttings observed were clean rolling curls suggesting correct circulating regime that minimized annular turbulence.

• Casing bit was made up on the floor to reduce the chances of damage. It was felt that if the bit was installed off line using DQ’s MU/BO Vice it could be damaged transporting up to the rig floor. • Floats were made up off line using DQ’s MU/BO vice. • MLT’s were installed off line using DQ’s Volant MLT Installation tool. • Centralizers were installed while casing was on the racks • No reaming on any connections • At TD the hole inclination on all wells were below 0.5°. The equivalent inclination when

drilling conventionally was between 1.0° - 2.0° • During well #3 we experienced 2 x blocked jets. This well was the first well with jet

nozzles 4 x 11’s. Managed to clear one jet and drilled ahead with 580 GPM with 1850 psi, which calculated a 500psi SPP increase to TD. No other wells experienced blockages.

• After inspecting the Volant dies at completion of 4 wells zero wear was observed. • Total Footage Drilled over 4 wells = 5,883’ • Total Drilling hours over 4 wells = 69 hrs. • Average ROP over 4 wells = 85’ p/hr.

Observations:

• Less Ton Miles due to reduced tripping • The well commenced drilling ahead of time without the need to prepare any drill-pipe, • Less pump required due to less hydraulic HP required minimizing fuel usage, • Minimized washouts lowering the cementing costs, • Offline productivity increased due to less personnel required for CwD operation, • Smaller mud system required at the start of each well, • NPT reduced due to no drill pipe tripping, • Zero stuck pipe issues due to no drill pipe tripping • Successful drilling out the shoe track with 5 a blade PDC with bit grading as 2-2 good

order • The Volant mechanical set CRT reduced rig up time due to small compact size and only one

connection References:!

Casing Drilling Engineering: Nigel Lakey - [email protected] Casing Drilling Coordination: Bruce Clark – [email protected] Casing Drilling Field Coordinator: Domenic Cassetta – [email protected] Client Drilling Engineer: Thivanka Dedigama - [email protected]

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Aug/Sept 2015




!!!! 12-1/4” EZC504 (9.625”)

• Full PDC cutting structure • Alloy construction allows for a PDC or Mill Tooth

bit to drill out • Bypass port allows for circulating or cementing

in event of nozzle plugging • Unique junk slot geometry to improve cuttings

removal and reduce bit balling!• 4 Blades x 4 Nozzles!

!!!!!!!!!!!!Volant CRTi3-7.0

• Max Tq = 50,000 ft/lb. • Max hoist = 320 Ton • Combined @ large Tq = 40,000 ft/lb. x 100 Ton • Combined @ large hoist = 23,000 ft/lb. x 250 Ton • Max compression = 100 Ton • Max circulating press = 5,000 psi • Tool length = 60” • Tool ID = 1.5” • Max flow rate = 2.5 cu/min • Fully mechanical

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Aug/Sept 2015




Drill Quip’s 4-Ton Extendable Casing P/U Links

• Rated to 4 Ton • Fit all models of Top Drives • Extend from 3.4 mtrs to 5.5 mtrs • Built in conformance to API8C, PSL1, 7K • Fit all sizes casing single joint elevators

5 Volant HydroForm™ Centralizer

• Non-rotating • Dimensions = 9.625” x 12.00” • Overall length = 15.5” • Rib length = 11.7” • Flow area = 61% • Material = mild steel • One piece construction using Hydroforming Technology

Volant Stop Collar

• Set crew count = 8 • Wall thickness = 0.25” • Material used = DOM tube c/w beveled edges

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Aug/Sept 2015




Drill Quip’s Make Up/Breakout Bench

• 50,000 ft/lbs torque • Wireless Tq Monitoring • One man operation

santos cwd case study rev1 - spread - forum · volant mlt rings were installed on all joints ! 2 x...

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