05/01/2023 Confidential

Intelligent Manage Pressure Drilling (iMPD)

Drilling Benefits Using iMPD

05/01/2023 Confidential

Three Key Elements

Safer QuickerCheaper

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iMPD Drilling Benefits

iMPD Global Market• Brazil Sub-Salt Wells;

• Vast fields in Southern Brazil reaching into Uruguay. • Angola Sub-Salt Wells;

• Same material data as Southern Brazil (previously connected).• West Coast Africa Salt Basin;

• Similar formations existing throughout the entire region.• South East Asia;

• Carbonated Reefs.• China;

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iMPD Drilling Benefits

iMPD Global Market• Australia;• Tight Holes and loss of circulation very predominant to the

drilling in the region.• Mediterranean;• Very narrow margins and extensively used by BP in Egypt deep

water and the Delta Basin.• Norway/North Sea;• Prime Candidates to develop previously in accessible fields.

• Gulf of Mexico;• ConocoPhillips expectations of less accessible fields targeted.

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System Layout

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iMPD P & ID of System Integration

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Drilling AdvantagesDrilling Advantages• Safely eliminating Casing Strings (as shown in

example below)• Direct cost saving due to less set-up time on casing

strings.• No returns to surface, all fluid can be directed

through the Buffer Manifold as seen on P&ID• MPD allows the operator to navigate tight windows

as seen in the next 2 slides.• Using RCD to strip less chance of swabbing.

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NOTE; The last two Casing Strings are not going to be used on this next well

Port Isabel PI 791 Outline

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Graph shows the tightwindow between the Fracture Gradient and the Pore Pressure that is expected on PI 791 “Walking the Line”

Port Isabel PI 791 Narrow Window

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Walking The Line• Using the example above iMPD allows the client to

navigate the tight margins that are expected that normal conventional drilling does not allow.

• Clients cannot foresee everything that can happen during a well and iMPD gives the advantage of aiding unforeseen situations.

• MPD becomes an insurance policy for both the drilling contractor and the client.

• Increased date rate for Drilling Contractors.

iMPD Advantages

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Conventional DrillingRun into situation moving onto iMPDTotal losses move onto Pressurized Mud Cap

Drilling PMCDOnce under control move back to iMPD

Common Drilling Practice Using iMPD

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Worst Case Scenario

The Ensco 106 in B14-1 South East Asia had the worst case scenario possible.• High Temperature• Very Narrow Margin Windows• High Pressure • 100% Loss to Well• H₂S Water• 18.3 ppg Mud WeightEverything was completed successfully due having MPD available whilst using PMCD.

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No iMPD Equipment Available To RigSafety; Higher Risk of Gas on the Drill Floor.As previously stated nobody can forecast all

eventualities in the well prior to drilling.Better to have the MPD equipment than retro-

fitting due to inaccurate well information. Massive escalation in cost if retro fitted. (e.g. Shell)

Higher risk of Well closing and costly time back reaming.

More Casing required.

No iMPD Equipment Available

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Better To Be Looking At The iMPD Equipment Than Wanting

it!!!!!

Conclusion