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Deepwater drilling challenges Benjamin choo Gm, Drilling – murphy malaysia PowerPoint PPT Presentation

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Deepwater drilling challenges Benjamin choo Gm, Drilling – murphy malaysia. Introduction. In search for oil and gas, operators have moved further offshore and into deeper waters. Deepwater is generally described as water depths > 1000 ft or 300 m.

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Deepwater drilling challenges Benjamin choo Gm, Drilling – murphy malaysia

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Deepwater drilling challenges


Gm, Drilling – murphymalaysia


  • In search for oil and gas, operators have moved further offshore and into deeper waters.

  • Deepwater is generally described as water depths > 1000 ft or 300 m.

  • Deepwater is the ‘final frontier’ of oil and gas exploration.

  • Deepwater fields have large commercial upside, hence justifying the technical and financial risks.

Offshore Sabah Water Depths


Field: 55m


Block K:





Deepwater Drilling Challenges

  • Deepwater drilling provides the greatest challenges in scope and opportunity.

  • Drilling costs typically make up 50% to 60% of deepwater development costs.

  • Overcoming deepwater drilling challenges is key to unlocking deepwater oil and gas fields as they represent the majority of the development risks and costs.

  • Key aspects of deepwater drilling are the deepwater drilling rig, support vessels, shore base, specialized well planning, well control equipment and emergency response.

Deepwater Drilling Rig

  • Deepwater drilling rigs are floating rigs.

  • Semi-submersible or drill ship design.

  • They are either moored or anchored at location or are dynamically positioned (DP).

  • High load capacity, large storage capability and capable of handling high wellbore pressures (15,000 psi).

  • High day rates (>$500k/day).

Deepwater Drilling Support Vessels

  • Large support vessels for deepwater drilling rigs function as:

    • Towing and anchor handlers for moored rigs.

    • Supplies fuel, tools, material and equipment to the drill rig.

    • Remotely Operated Underwater Vehicle (ROV) support.

Subsea Well Control Equipment

  • Deepwater drilling rigs utilize subsea blowout preventers (BOPs) located at the sea floor.

  • Subsea BOPs are designed to operate in high external pressures caused by water depth and up to 15,000 psi internal pressure.

  • Operated by electro-hydraulic multiplex (MUX) systems to achieve fast response.

Deepwater Well Construction

  • Deepwater wells construction is unique as it is based on a subsea wellhead system.

  • Deepwater wells are challenging due to the narrow window between the formation pressure and the rock strength.

  • Other challenges include gas hydrates and cold seabed temperature.

Shorebase Support for Deepwater Drilling

  • Good setup of a shore base helps to efficiently support deepwater drilling operations and prevent expensive shutdown of the drilling rig

  • The shore base needs to have good infrastructure access, ample yard space and sufficient water depth at the quay for large deepwater drilling support vessels to berth.

Deepwater Emergency Response

  • Emergency well control and blowout response plan need to be developed.

  • Emergency responsebased on ICS structure.

  • Access to subsea well containment package.

    • Subsea capping stack.

    • Subsea dispersant system and dispersants.

    • Debris removal.

  • Ability to drill relief well.

Other Challenges

  • Escalating costs, i.e. rigs, vessels, third party services, etc.

  • Finding and retaining competent key personnel.

  • Increasingly stringent regulatory requirements for deepwater drilling post Macondo.

  • Long lead times for tools and equipment.

Murphy’s Deepwater Operations in Malaysia

  • Drilled over 120 deepwater wells in Malaysia since 2002.

  • Global top quartile deepwater drilling performance.

  • Held world record for deepest water depth for mooring a semi-submersible rig for Ocean Rover in 8,430 ft (2,570m) of water depth.

  • Developed and producing from Kikeh since Aug 2007 which is the first deepwater field in Malaysia.

  • Production from subsea tieback of GumusutKakap deepwater field.

  • First oil achieved from Siakap North Petai deepwater project in Feb 2014.

Ocean Rover

SKD Menang, Kikeh DTU and Kikeh FPSO

Deepwater Drilling Performance – Murphy Malaysia vs Global



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