Riserless Light Well Intervention (RLWI), methods key to increasing recovery rate form Subsea wells INTSOK – Houston, February 19th 2015

Eddie Karlsen – FTO Sr. Advisor &

Well Intervention Specialist

Setting The scene

- Statoil 2014

Source: Statoil and Norwegian Petroleum Directorate

What is the Value?

We are not running out of oil, We are running out of “easy oil” That is why we have to further explore the ned for cost-effective Intervention Solutions

Benefits compared to interventions from a semi

submersible rig:

• Reduced operation cost by 50-70%

• Reduced operating time

• Increased Weather Window

• Mobilizing, vessel can run between fields

at 14 knot speed

Results in:

• Reduced cost per intervention

• Enabling more interventions that otherwise would

not have been performed

World Liquids Supply By Type

Leverage Capabilities, Contracts, Relationships

Vessel-based Integrated Subsea Services

3rd Party Suppliers

Parent Companies

4 4

Rigless Through Tubing

Abandonment Installation &

Commissioning

Inspection,

Maintenance &

Repair

Riserless Well

Intervention

Acid Stimulation

Scale Treatment

Hydrate Remediation

Scope of Services

5 5

Hydrate Remediation

• Dual-pump system capable of 15ksi @ 5gpm

• Hot-stab Interface

• 100-gallon onboard Liquid Recovery System

• ROV Front porch interface, enabling: – Fluid Isolation – Directional Flow Control – External fluid import & export

• Real-time Operational Diagnostics

6 6

Acid Stim System Overview

• Down Line Configuration – Coiled Tubing

• Injector head – over the side or thru moonpool

– Flexible jumper from CT to connector

– Hot make and break, zero leak connector

• Subsea Stimulation Module – Hot make and break, zero leak connection

– Maintain dual barrier philosophy

– Bolt on to subsea connector

• Subsea connection device must be

provided by client

Pump-in Tree Adapter

• Prevents contamination or damage to the stack by injecting hazardous fluids into the well bore below the stack

• 18-3/4” H4 connector allows stack to be landed on multiple XTs by only changing out the production seal stab – 10k & 15k EHXT – 10k & 15k EVDT – 15k EVXT

• Modification of existing FMC rental connector,

minimizing delivery time

• Maintains dual barrier philosophy

Fluid Treatment and wireline access

25 Jul 2013

Added feature to adapter

between RLWI and TRT allows

for fast follow-up of PLT

wireline test to assess

efficiency of fluid treatment

9 9

Rigless Through Tubing

Abandonment Installation &

Commissioning

Inspection,

Maintenance &

Repair

Riserless Well

Intervention

Acid Stimulation

Scale Treatment

Hydrate Remediation

Scope of Services

Riserless Light Well Intervention (RLWI)

FMC’s RLWI System #4 - Key specifications

Design water depth Min. 70 m ( 210 ft) Max. 2000 m (6600 ft)

Design pressure 690 bar (10 000 psi)

Operating pressure Limited to 690 bar or 345 bar, selectable on CIU

Bore diameter main bore 7-1/16” (179.4 mm)

Minimum drift size According to ISO 10423 / API 6A Section 7.4.9.5.1

Total height / weight Toolstring length capacity

33 m / 80 tons 22 m

Bore diameter well kill 2” (50.8 mm)

Temperature rating ISO class U (-18°C to 121°C) ISO class S (PCH to 66°C)

Sour service Completion/Workover Riser Systems

According to ISO 15156 (MR0175) According to ISO 13628-7

PCH

ULP

Safety Joint

LLP

WCP

12

Some sense of scale

• Stack 4 loaded on Island performer last week

• In the back you see the WCP

• In front the Lubricator

What type of Intervention do I need?

Can Do: • Multi-well Diagnostics

• PLT • Water shut off • Sand & Scale clean out • Shifting sleeves • Milling nipples, restrictions, valves • Cut tubing (in compression) • Tubing/casing inspection (internal and external metal loss)

Capable of analyzing the integrity of the outer pipe from inside the inner pipe • GLV change out • Well start up/ Gas lift • Perforating - EOR • Setting/Pulling plugs • CH and OH logging

(CHFR, RST, CBL, USIT, MFC etc) • Acid stimulation/Chemical spotting • Hydrate removal • 4D seismic • Prepare well for P&A • Etc

Does RLWI work for me?

14 14

Rigless Through Tubing

Abandonment Installation &

Commissioning

Inspection,

Maintenance &

Repair

Riserless Well

Intervention

Acid Stimulation

Scale Treatment

Hydrate Remediation

Scope of Services

15

RLWI Convertible to Riser

• FTO Services has designed a dedicated 10ksi, RLWI system that can leave WCP barriers in place and reconnected with a open water completion/workover riser, per API 17G, Annex N

• The LLP and lubricator section of the RLWI would be replaced with an EDP and Tapered Stress Joint

16

Subsea Well P&A has changed

• In past (prior to Feb. 2014) Operators were allowed to perform lower P&A cement squeeze, cut tubing and place cement plugs at upper levels, followed by cutting the wellhead and recovering all subsea equipment open water often in one-pull salvage

• BSEE WILL NO LONGER

ALLOW THIS!!!!

17

New Era Subsea Well P&A

• BSEE now requires an upper abandonment step to perforate/cut into B annulus and cement

• Upper abandonment must be done with a WCP

• Conventional means requires a BOP or larger bore WCP for pulling TH and casing , limiting choice and availability of vessels to do P&A

old method new method

with B-annulus

circulation/cementing

18

New Era Subsea Well P&A

• FTO perusing Thru-tubing P&A technology to allow upper P&A to be done with subsea tree hardware in place (acting as WCP)

• When well barriers properly in place, wellhead cutting can take place and then go back to conventional subsea equipment salvage

Increased Oil Recovery – a value driven ambition

• IOR by 1% on Statoil wells = 50 bill USD (approx. 525 ss wells)

• Should be possible to achieve globally!

• We are ready for smart interventions, but need commitment from operators!

• Or said with the new language - We got the apps, but need some mobile phones!

Thank You !