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Confidential

SPE/BSEE Source

Control Forum

May 2015

Confidential Confidential

Wild Well’s

15 Year Historical Analysis

35 Fires, 16 Bridged & 12 Broached

5 Relief Wells Were Needed 10 Inland Waters 2 Jack-up 11 Platform 9 Deepwater

32 Offshore/Deepwater Blowouts

The following statistics represent incident responses performed only by Wild Well


Wild Well’s


Operational Setting Well Type


Wild Well’s


Responses Needed


Wild Well’s


Responses Used


Surface Stack Concerns

• Capping stack deployment concerns

– Availability of capping stack, when needed for

emergencies

– Access to proper sized BOP’s

– Potential for single well event to escalate into

multiwell event

– Access to wellbay area

– Structure/wellbay damage may inhibit water curtain

– Structure/wellbay damage may inhibit capping

– Egress/Exit onto structure difficult


Source Control Concerns

• Surface capping equipment not organized in same

manner as subsea capping systems

– Personnel centrally located

– Equipment staged in Gulf Coast Region

• Organized as ready, demonstrable system

– First 24 hours, reactionary in nature

– Never waiting on capping equipment

• All capping equipment designed for rapid deployment

• Marine Vessel’s will take most time for proper positioning


Capping Stack & BOP Availability

• Wild Well, Weatherford WellCat and Patterson Rental Services represent

nearly 100% of pressure equipment call-outs for well control incidents.

• Smaller diameter capping stacks are also readily available

• Additional components (spools, valves, flutes, etc.) would be available or be

fabricated as to necessary specifications. *Survey conducted by Steve Norris, VP BTI from 5/4-8/2015

More than 660* BOP’s available

Sizes: 7” to 16-3/4” Dia. Pressure: 5M, 10M, 15M)

Type U Design

Riser to Wellhead

16-3/4” Capping

Stack

Two Overboard Divert Valves

Two Overboard Divert Lines (only one installed at the time)

Venturi Pipe or 13-5/8” BOP for Snubbing Unit (as shown)

Two (2) 16-3/4” BOP


Equipment Response for

Capping, Snubbing or Critical Well Service

• Wild Well, Patterson Rental, Weathford WellCat

– have never encountered an inability to provide equipment

on time sensitive response basis

• During emergencies, companies work together and

cooperation is beyond competition

• Capping Stacks normally assembled in 12-24 hours

– Delivery to dockside normally 12-24 hours prior to loading

on vessel

– Outfitting with special rubber goods (H2S, CO2, High

Temperature) require OEM interfacing and adds time

• Working fast is not necessarily working smart or safe

• Exclusive transportation from Crocker Trucking (no wait)


Current Response Capabilities

Well Control Specialists 21

Safety Response Specialists 5

Well Control Engineers 18

Subsea/Well Engineers 12

Marine Well Supervisors 12

Engineers/Emergency Responders are full-time employees, not part time

consultants


Case History #1 – Eugene Island

• 12-14 hrs after cementing 10-3/4” casing at 1700 ft

– installation of the starting head with base plate was being conducted.

• During welding operations of the base plate to 24” conductor casing, vapors were observed coming from:

– 24” x 10-3/4” Annulus

– Had an opened 6” valve at +10 ft level on 24” conductor

• Unable to halt flow, platform and jack-up abandoned

• Flow sharply increased (flow over crown)

• Wellhead blew off striking beams

• Well caught on fire


Chain of Events (Continued)

Blowout (Crews Evacuated)

After Fire & Derrick Collapse

Well Bridged Over

Laid Over BOP Stack

Drilling Package Resting on Platform


Assessment


Forward Plan

Phase 1: Install competent diverter system (capping stack) onto blowout well

– Remove necessary debris from both the rig and platform

Phase 2: Gain re-entry of an adjacent well for dynamic kill

Phase 3: Gain re-entry of the blowout well

Back-up: Spud relief well within 1000 ft. using spot charted Jack-up

– Drill and range relief well as back-up


Phase 1: Install Diverter

Remove Debris Clean Off Soil Install 24” Conduit Over 20”


Diverter Installed (Continued)

24” Conduit Over Plugged 20”

Slip on Wellhead

Diverter Installed


Phase 2: Gain Re-Entry to Nearby

Well for Dynamic Kill

Remove Debris (Drilling Package) Near-by Well Prepped for Dynamic Kill


Phase 3: Gain Re-Entry to Blowout

Well

Install Snubbing Unit and BOPs Pump and Dynamically Kill Well


Inland Barge Capping

Installing the Capping BOP

Securing the BOP to the Wellhead

Well On Fire Requiring Debris Removal


Summary Comments

• 40 year history has shown ability to mitigate ALL well control problems

– Never walked away from a well

• Equipment readily available within the US for any type of problem

• Expertise lies in having

– Knowledgeable personnel for planning and executing safest procedures

– Well maintained ready-to-go emergency equipment

– Large variety of emergency equipment for greatest flexibility

– Ability to improvise, as each well control situation is completely unique.

Confidential

Thank you……… Please visit wildwell.com

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