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AbelLogo ALCS™ - Abel LMRP Capping System
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version of ALCS Capping Animation or MP4 version of ALCS Capping Animation
version of ACS Capping Animation or MP4 version of ACS Capping Animation

Subea Intervention for Deepwater Blowout Incidents

Design philosophy:

  • Quick to deploy thus minimizing incident impact
  • Cost Effective (10% of other systems)
  • Designed to be fit-for-purpose for flows of 200,000 bopd and/or 500 mmscf/d gas
  • Light weight – small footprint
  • Simple reliable controls and systems


  • Adapts to the Rigs existing LMRP system
  • Utilizes Rigs existing resources i.e., Personnel, ROV, DP, cement pump, mud mixing, etc.
  • Can be held at rig site or near by
  • Minimal cost to do the job
  • Small footprint (2x 20’ containers)

Patent pending in US and International patent offices

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ALCS™ - ABEL LMRP Capping System
ACS™ - ABEL LMRP Capping System

ALCS deployment use of existing rig BOP
For capping operation and re-entry

ALCS ready for deployment
(orange added equipment):

Capping with ALCS

Capping Animation ALCS
Comparison of Existing to ALCS

Conventional Systems

  • Some are only available to the participants in the region (Operators)
  • VERY heavy hard to transport and rig up offshore
  • Best case for intervention is 21 days likely case is 40 days
  • Very expensive
  • Availability is first-come-first serve basis
  • Controlled by others

ABEL LMRP Capping System

  • Available to the rig quickly
  • Onboard during operations (2x 20 foot containers)
  • Can be deployed in time it takes to pull riser plus 10 hours to install onto LMRP
  • No need for 747 or AN-124 lifts
  • Cost is a fraction of the other systems
  • Saves time – reduces exposure

Abel LMRP Capping System (ALCS) or (ACS) - Benefits

  • Will solve 99% of deepwater blowout scenarios
  • Footprint is small (2x 20 foot containers)
  • Cost is a fraction of other systems
  • Lower cost justifies multiple systems in the field (not air freight from outside the region or country)
  • Mobilization is one day (or less) by boat OR kept on ready on the rig itself

Abel LMRP Capping System (ALCS) - Rating

  • 15k shut-in
  • 10,000 ft working water depth
  • 200,000 std bbls oil flow rate and/or 500mmscf/d gas rate

Abel LMRP Capping System (ALCS) - Basic Operation

  • Powered from pre-charged accumulators
  • Acoustic operated with ROV backup
  • Emergency disconnect by ROV or acoustic signal by hydra. Connector
  • DP disconnect by on-off tool
  • Accumulators can be re-charged with ROV (or pumped from DP from surface)
  • Chemical injection for hydrate breaker (if needed)
  • Visual read out of temp and pressure at critical points
  • Acoustic readout of pressure and temp for control for well kill and hydrate avoidance

Abel LMRP Capping System (ALCS) - Mitigation of Risks

Means to mitigate pollution risk:

Prevention - Don’t let it happen in the first place

  • training of personnel
  • adopt best practices

Contingency Plans and Equipment

  • training personnel for capping operations
  • minimize intervention time line by having contingency
    equipment avalable at rigsite.

Blowout Scenario

Most likely “next” case

  • Well control operations occur
  • Successful disconnect
  • BOP leaks (for whatever reason)
  • MODU, LMRP are unharmed therefore the first available MODU for capping
  • BOP leaks cannot be stopped with conventional techniques
  • DO NOT EXPECT Macondo to repeat with same circumstances

Copyright©  Abel Engineering LLP 2012