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MWCC Overview, Well Containment Operations & SIMOPS. Spill Control Association of America – Annual Meeting March 20, 2014 Carmine Dulisse. About Our Company. Leading deepwater well containment system and technology provider for U.S. Gulf of Mexico

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Mwcc overview well containment operations simops

MWCC Overview, Well Containment Operations & SIMOPS

Spill Control Association of America – Annual Meeting

March 20, 2014

Carmine Dulisse

About our company
About Our Company

  • Leading deepwater well containment system and technology provider for U.S. Gulf of Mexico

  • Expertise in subsea containment and incident response training

  • Independent company, not for the purpose of making a profit

  • 10 members, representing 70% of the deepwater wells drilled in the U.S. Gulf of Mexico

  • Each member has an equal share and an equal vote

  • Investment of over $1 billion into system

  • System available to all operators in the U.S. Gulf of Mexico as a member or as a non-member (per well basis)

  • 147 permits citing MWCC’s containment system approved by BSEE

Source control response workflow
Source Control Response Workflow

There are multiple response functions that are critical to a successful source control effort.

Standard Source Control Response Workflow


Debris Removal


Decontamination & Demobilization

Site Survey & Initial Assessment


Subsea Dispersant Application

Capture & Collection

Capture & Collection

Subsea Dispersant Application


Relief Well

Site survey debris removal
Site Survey & Debris Removal

  • Site Survey & Initial Assessment

  • A surface (aerial/vessel) and subsea (ROV) site survey will prompt the subsequent steps in the workflow by indicating:

  • Existence of debris

  • Potential discharge source(s)

  • Status of surface and subsea infrastructure

  • General magnitude of the release

  • Debris Removal

  • If debris is known or detected, debris removal becomes the critical path activity to ensure a safe working environment and access to the site for intervention

  • The scope of debris removal operations is unpredictable and will impact the response timeline

  • Capping operations will require a clean connection to the wellhead, BOP, or LMRP

Subsea dispersant application
Subsea Dispersant Application

Subsea Dispersant Injection System (SDIS)

30-in. and 40-in. Hook Wands

Fan and 50-in. Hook Wand

  • Subsea dispersant is a key initial response tool for mitigating hydrocarbons in the water and may be necessary to enable a safe working environment by minimizing volatile organic compounds (VOCs) on the surface

  • MWCC provides an initial supply of approximately 200k gallons of COREXIT 9500.


  • Capping operations involve the installation of a capping stack onto the wellhead and closure of the ram and choke valves to shut in the well and stop the discharge of hydrocarbons.

  • Key Resources:

    • Deployment vessel(s) – for the capping stack and support equipment

    • Crane for load-out onto deployment vessel

    • Additional connector if interface necessary

  • Key plans & procedures:

    • Pre-mobilization and testing plans

    • Equipment load-out and sea fastening plans

    • Well straightening procedure (if necessary)

    • Installation procedures (adapted to the current situation)

    • Well shut-in procedure and contingency plans

      • Wellbore Containment Screening Tool

Hydrate inhibition
Hydrate Inhibition

Hydraulic Power Unit (HPU)

Chemical injection pumps & manifolds

Launch & recovery system

Methanol storage tanks

Umbilical & reel

Air tugger

Umbilical Distribution Box

17D hot stab assemblies

Long (static) chemical flying leads

Flying lead deployment frame

Hot stab patch panel

To CDP Manifold

Not Used

To BOP Gooseneck

  • Methane hydrates form from natural gas exposure to very cold deep water temperatures

  • Hydrate Inhibition Systems inject methanol or glycol solutions into the containment system equipment to prevent potential hydrate formation and blockage

Short (dynamic) chemical flying leads

Flying lead distribution box

Well containment operations3
Well Containment Operations

Well Containment Operations

Cap flow
Cap & Flow

  • Cap & Flow operations involve the installation of additional subsea equipment such as subsea umbilicals, flowlines, risers, and manifolds to enable a well to be flowed to a surface capture vessel

  • The surface capture vessel will process the oil/gas/water stream for safe storage and transport

What is simops
What is SIMOPS?

  • SIMOPS is the management of Simultaneous Operations to ensure safe execution of response activities to avoid a potential clash which could bring about an undesired event

    • A proper SIMOPS management program involves an exchange of information to enable efficient use of resources to accomplish multifaceted missions safely

  • During a response, USCG will require a comprehensive SIMOPS plan that includes deployment and operation of well containment equipment

  • MWCC has created a SIMOPS Guideline and associated drawings for deployment and operation of its equipment in order to provide its members with a framework for SIMOPS management

Role of simops in the response
Role of SIMOPS in the Response

Command Post


SIMOPS Control




The SIMOPS control group is responsible for coordinating the safe execution of operational plans within the designated control area(s) in the field.

Effective SIMOPS coordination requires that:

SIMOPS requirements are integrated into Command Post tactical planning

SIMOPS procedures are established and maintained for all resources in the field