session 2- johan eck-olsen (definition of mpd and ubd)

7/30/2019 Session 2- Johan Eck-Olsen (Definition of MPD and UBD)

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Managed Pressure DrillingWhat It Is and What It Is Not

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Presentation prepared by: Ken Malloy


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George Medley Helio Santos

Don Hannegan

ames ay

Oliver Coker John McCaskill

Johan Eck-Olsen

Don Reitsma

Paul Sonnemann


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difficult to carry out, normore ou u o success,

nor more dangerous tohandle, than to initiate anew order of thin s.

cco ac ave


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Had Overbalanced drillin and Underbalanced

drilling technologies Needed near balance drilling technology

Managed Pressure Drilling named and given its

own identity around 2003 v

Operations

Use some of the techniques learned from

Underbalanced Operations Improve Conventional Drilling operations using the

tools and techni ues


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Operations, Managed Pressure Drilling,

Same

Interchangeable Terms

u u Umbrella Term


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equipment and controls where theressure exerted in the wellbore is

intentionally less than the pore

pressure in any part of the exposedorma ons w e n en on obringing formation fluids to the surface.


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An adaptive drilling process used to precisely control theannular ressure rofile throu hout the wellbore. The

objectives are to ascertain the downhole pressureenvironment limits and to manage the annular hydraulicpressure profile accordingly.

Technical Notes: MPD process employs a collection of tools and techniques which may

m ga e e r s s an cos s assoc a e w r ng we s a ave narrowdownhole environmental limits, by proactively managing the annularhydraulic pressure profile.

MPD may include control of back pressure, fluid density, fluid rheology,

, , ,thereof. MPD may allow faster corrective action to deal with observed pressure

variations. The ability to dynamically control annular pressures facilitates.

MPD techniques may be used to avoid formation influx. Any flow incidental

to the operation will be safely contained using an appropriate process.


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An adaptive drilling process used to precisely control theannular ressure rofile throu hout the wellbore. Theobjectives are to ascertain the downhole pressureenvironment limits and to manage the annular hydraulicpressure profile accordingly.









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An adaptive drilling process used to precisely control theannular ressure rofile throu hout the wellbore. Theobjectives are to ascertain the downhole pressureenvironment limits and to manage the annular hydraulicpressure profile accordingly.









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An adaptive drilling process used to precisely control theannular pressure profile throughout the wellbore. Theo ec ves are o ascer a n e own o e pressure

environment limits and to manage the annular hydraulicpressure profile accordingly. The intention of MPD is to avoid

.incidental to the operation will be safely contained using an

appropriate process. MPD process employs a collection of tools and techniques which may

mitigate the risks and costs associated with drilling wells that have narrowdownhole environmental limits, by proactively managing the annularh draulic ressure rofile.

MPD may include control of back pressure, fluid density, fluid rheology,annular fluid level, circulating friction, and hole geometry, or combinationsthereof.

variations. The ability to dynamically control annular pressures facilitatesdrilling of what might otherwise be economically unattainable prospects.


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Underbalanced Drilling Managed Pressure Drilling

A drilling activity employing

appropriate equipment andcontrols where the pressureexerted in the wellbore is

An adaptive drilling process

used to precisely control theannular pressure profilethroughout the wellbore. The

pressure in any part of theexposed formations with the

intention of bringing formationfluids to the surface.

downhole pressureenvironment limits and to

manage the annular hydraulicressure rofile accordin l .The intention of MPD is toavoid continuous influx offormation fluids to thesurface. Any influx incidental

safely contained using anappropriate process.


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Borehole Stability Pore Pressure

MPD concerns

Borehole Stability

Pore Pressure

Frac Gradient


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Underbalanced Drillin Mana ed Pressure Drillin

Intent is to continuouslymanage an influx

Improves drilling

Intent is not to continuouslymanage an influx

Mitigate Drilling Problemsperformance by invitinginflux rather than

increasing mud weight to

Lost Circulation

Stuck Pipe

Wellbore Stability.

Prevent reservoir damage

Reservoir characterization

e ontro

Pressure Profile Driven

Drilling Window -

Between BHS-FG

Equivalent Mud Weight Influx Discouraged


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session 2- johan eck-olsen (definition of mpd and ubd)

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