Drilling & Drilling Fluid Developments

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Drilling & Drilling Fluid Developments

Brian Teutsch June 6, 2016

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Safety Moment—Tire life

Structural integrity degrades over time May not be visually detectible Replace every 6 years (10 years max)

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Deepwater • ECD & weighting agents • Wellbore strengthening

materials (think “LCM”)

Silver; Solution in need of a problem; You

Fry; Problem in need of a solution; Me

Unconventionals • Challenges &

opportunities

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Barite’s role in ECD

Fluid’s Static Density + Cuttings

Equivalent Static Density

“drag”

￭ Control formation pressures

￭ Promote wellbore stability

ppge

de

pth

Pore Pressure = 12.0 Frac Gradient = 13.0

Pressure “felt” by the Formation

ESD = 12.3 ECD = 12.8

Operating Window

+ Friction = Equivalent Circulating Density

ECD

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Barite’s role in ECD

X µ

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Barite’s role in ECD

X µ

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Barite’s role in ECD

X µ

Less drag… But more sag

Less sag... But more drag

Fluid’s Static Density + Cuttings + Friction = Equivalent Circulating Density

Equivalent Static Density

“drag”

Pressure “felt” by the Formation

Viscosity can fix sag! I know that, dummy, but viscosity

increases drag and hurts ECD!

Buddy boy, just keep it thin and we can use velocity to carry those cuttings and

get ECD even lower! Oh yeah, well viscosity carries cuttings better and that helps ECD, too!

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Barite’s role in ECD

Fluid’s Static Density + Cuttings + Friction = Equivalent Circulating Density

Equivalent Static Density

Is this Fact or Friction?

“drag”

Do the engineering and economics and see which is best for a given application!

Pressure “felt” by the Formation

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LCM vs. wellbore strengthening materials

LCM to clog up fractures

WBSM to immediately fill & seal new fractures

* Calcium carbonate * Synthetic graphite

* Barite * Nut plug

* Proprietary sealing agents

￭ A rose by other names

￭ Prevention instead of reaction

￭ Mostly used in synthetic-based mud (SBM)

￭ Preferred characteristics

– High compressive strength

– Resilient

– Wide range of sizes; TINY to HUGE

￭ Good fluid properties (better than ever)

￭ PPH vs. PPB ($)

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￭ High focus on economics & efficiency

– Product cost

– Logistics

￭ Relatively low focus on ECD

￭ Solids tolerance of OBM

￭ What about lubricity?

Grade Shift

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Lubricants in U.S. land

Product sales as a % of total sales, indexed to a base year

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2010 2011 2012 2013 2014 2015 2016 YTD05

Lubricants as % of non Svc Revenue

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2010 2011 2012 2013 2014 2015 2016 YTD05

Graphite Non-mineral

Product sales as a % of total lubricant sales, indexed to a base year

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0%

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2014 2015 2016 2017 2018 2019 2020

Graphite Non-mineral Your big idea…

Product sales as a % of total lubricant sales, indexed to a base year …and extended into your imagination

Thank you!