Capping Stack Soft Shut InReal-time Simulation of a Soft Shut-In

2017 MEXUS Exercise Results

3/6/2018

Leader in Contemporary Subsea Solutions

• Originating in 1980, this joint agreement between the USA and Mexico committed both countries to create a Joint Contingency Plan regarding pollution of the Marine Environment by means of hydrocarbon discharges & other hazardous substances.

• For 2017, Anadarko was chosen to lead and host the MEXUS Response Drill.

• Anadarko invited Trendsetter Engineering, addenergy & GRI simulations to be a member of the exercise response team

• This presentation attempts to inform you on the roles played by the team as well as provide an overview of the soft shut in sequence played out during the exercise

2017 MEXUS Exercise

add energy

GRI Simulation

Trendsetter Engineering

add energy’s Drilling and Well Operations division offers

specialized consultancy services and support from well

design to operations; they aim to minimize risk, expenditure

and exposure of Oil and Gas drilling operations globally

GRi Simulations Inc. is a Canadian company focused on

real-time simulation, modeling and visualization of critical

marine activities to support increased process efficiency

and operational safety.

Trendsetter is a premier provider of specialized subsea

solutions for oil and gas companies across the globe. We

specialize in solving unconventional problems with

conventional field proven technology, especially in a crisis

environment.

MEXUS Participants – Capping Installation & Operation

Participant Background

• Trendsetter is a premier provider of specialized subsea solutions for oil and gas companies across the globe. We specialize in solving unconventional problems with conventional field proven technology, especially in a crisis environment.

• During Macondo, Trendsetter was actively involved in the operations surrounding the well kill.

• Post Macondo, Trendsetter was integral to the development of Capping and Containment hardware that has become the industry standard in source control response equipment

Trendsetter Engineering

Gen 3 Capping Stack

• Since 1998, GRi Simulations Inc. (GRi) has been focused on delivering high-fidelity solutions for critical marine operations.

• VROV is a 3D interactive real-time simulation system which supports the complete range of AUVs, Inspection and Work Class ROVs, and the full spectrum of sensor and intervention subsystems

• Since 2004 GRI has been working with Trendsetter on the creation of realistic subsea environments for pilot training and field development.

• Since Macondo, GRI has modelled and placed in the simulator the majority of the hardware Trendsetter has built.

GRI Simulations

What they do:• Add Energy is an International

Consultancy Provider for the Energy Industry that combine specialized engineering and proprietary software solutions to deliver a complete suite of optimized consultancy services

Who they are:• Add Energy is established in key energy

regions across the globe in close proximity to their clients. They are headquartered in Stavanger, Norway and operate through offices located in Europe, Asia, North America and Australia.

• They are the architects behind the creation of OLGA Well Kill, the industries first well bore simulator which has subsequently become the industry standard program for well control analysis.

add energy

Capping Stack Components

Capping Stack Components• Secondary Containment Cap

• Choke x2

• Upper Mandrel

• Ball Valve x4

• Ram x1• Diverter Spool

• Gate Valve x4

• Wellhead Connector

• Why soft shut in?• Controlled shut in of a blowing well as safely

as possible to minimize potential damage to the casing

• General CS configurations• Ram based vs Valve Based

• Erosion considerations• Hardware requirements

• Chokes• Purpose and Configuration

• Gate Valves• Purpose and Configuration

Mechanics of a soft shut in

ROV simulation & its role in exercise support

• Using soft shut in procedures based on a well bore schematic and predicted reservoir properties, a soft shut in dive plan is created to perform a shut in of the selected Capping Stack using the ROV Simulator

• Using the Capping Stack operating manual, the dive plan follows the correct procedures to operate each component

• HOLD periods are in place after each step to monitor reservoir performance via the chemical injection panels

The simulator mimics real-world conditions

• Addenergy’s OLGA Well Kill software establish the predicted reservoir pressure response curves

• The cross sectional profile of the Capping Stack flow paths, and the sequence to shut in the Stack contribute to calculating the pressure response curves.

• The ROV shut in sequence in the procedure matches the predicted pressure response curve defined by the soft shut in analysis

• HOLD points allow the bore pressures to stabilize between steps

Well Bore Analytics linked to Operating Procedures

• The gauges are linked to the P&ID of the specific capping stack

• As the sequence to shut in the stack is performed, the gauges react accordingly depending on the configuration of the center bore and side outlets

• Digital read outs add a higher level of resolution, mimicking the response from a digital pressure gauge

Real Time Pressure Monitoring via Analog Gauges

• Olga-Well-Kill has been designed for planning and evaluation of dynamic kill and well intervention options.

• Olga-Well-Kill has been used on 70+ live blowout and well control incidents including:

• Porter Ranch, California (2015)• Elgin gas blowout, North Sea (2012) • Macondo blowout, Gulf of Mexico (2010) • Montara gas blowout, offshore Australia

(2009)• and has been central in the preparation of

more than 1400+ blowout contingency plans

• Available features include: • Dynamic kill simulations • Top kill simulations • Kick tolerance and circulations• Bullheading simulations• Crossflow potentials• Shallow gas analysis• Versatile graphical presenter

add energy – Olga Well Kill

Capping Stack Deployment & Operation

Capping Stack Deployment

• Debris removed – allowing access to the BOP to land the Capping Stack

• BOP Intervention attempted -unsuccessful –well still flowing

Initial Field Layout

Capping Stack Installation

Capping Stack Installation

Secondary Containment Cap Installation

Pre Isolation Well Integrity Test

Soft Shut In

Soft Shut In Sequence

ROV Simulation Excerpt– Soft Shut In Sequencing

In conclusion

• Technology exists today that can train personnel in peace time for a war time event with an extremely high level of fidelity and realism

• Some Operators see the benefit of this technology and are starting to incorporate it into their planned exercises

• More work remains however to introduce this to the entire O&G Industry

Questions?

MUDLINE CLOSURE DEVICE260,000 LBS. OF PREVENTIONMaintaining Well Control Barriers Under Any Condition

Presented By: Mario R. Lugo P.E.August 11, 2014

Thank YouTRENDSETTER ENGINEERING, INC.Leader in Contemporary Subsea Solutions

www.TrendsetterEngineering.com