RLWI Case Study:

Use of Wireline Stroker Tool for

Horizontal XT Crown Plugs Setting

and Retrieval

Stuart Murchie – President MEAP and EVP Technology Commercialisation

ALTUS Intervention

Andrea Sbordone – Senior Business Development Manager

TIOS

OWI Europe Conference 2019

18 April 2019

Agenda

• Integrated RLWI Alliance

• Track Record

• Crown Plugs Setting and Retrieval

• Stroker Solution Evaluation Tests

• Field Validation Case Studies

• Conclusions

2

• Slickline and eLine services

• Tractor Conveyance and Powered Mechanical Applications

• Logging services

• Milling, Cleanout, Stroking

• Pumping

Integrated RLWI Alliance

• Well Access System

• Lubricator System

• Well Control Package

• Purpose built vessels

• Engineering Services

• Integrated Project Management & Safety Case

3

RLWI Track Record 4

Of 575 wells, >350 were Horizontal XT’s with Crown Plugs

“Other” services include: drift runs, junk basket, bailers and samplers, calipers, leak detection, cement evaluation,

toolstring fishing, magnet runs, plugs milling, downhole camera, punchers and cutters, mechanical stroking for

sleeve actuation, gauge installation and retrieval

Services Analysis

40

90

96

In addition to above activities:

Gas Lift Valves have been replaced involving all vessels.

X-MAS Installations, Removal, Start-up, Repair and Refurbish.

Temporary / Lower Plug & Abandonment. Plug, perforations and diplacement of wellbore fluid.

5

Crown Plug setting / retrevial 6

Subsea ‘wet’ horizontal tree and associated crown plugs

• Seabed located “wet” Horizontal Tree design

• Subsea tree utilises crown plugs

– primary and secondary barriers

• Plug retrieval is required for well intervention access – with subsequent re-setting of plugs post intervention

• Plug setting and retrieval usually done by conventional

slickline jarring

• Concern that line movement control and jar dampening

in deep water/high current environment could impede

plug retrieval and setting

• Simulation tests done to determine sea current effect

on line positioning and jar dampening

Sea Current Evaluation Tests

PCH with assembled

lubricator hose & sensors

Snatch block with weight used to simulate sea

current drag and line angle at top of PCH Measurement of run-in angle at PCH Tool Wire reaction loads

• Test Program carried out in collaboration with Shell Norway to

quantify effect of sea current on downward jarring and line

friction

• Quantify friction increase at PCH due to angle caused by

horizontal force on cable above PCH

• Quantify impact force / BHA lift effect for different cable

type/sizes at different weights

• Compare test data with that from

SEAFLEX® analysis and Cerberus® model

7

Effect on force due to cable angle

(0.125” and 0.219” Slickline)

Impact force for 0.125” Slickline vs. cable angle

7° 12

° 32

°

4° 9° 40

°

• Test Conclusions

• Horizontal force/higher cable angle and contact at PCH results

in significant friction increase

• This results in a loss of jarring impact

• Operational experience suggest that even in the highest

currents the true cable geometrical angle at top of lubricator is limited to a few degrees

• Impact decrease however starts from as low as 7° cable angle

• Horizontal deflection also deteriorates depth correlation

accuracy, amplified when working in deep waters

Sea Current Evaluation Tests 8

• Conclusion impact of sea current in a deep water

scenario could hinder crown plug installation and retrieval

• Decision to evaluate and test the use of an electrically

powered stroker device for plug setting and retrieval

Powered Stroker Application 9

• PrecisionStroker features • 3 x pad anchors with progressive anchor force

• Max. 20” Bi-directional stroke length with 0.04” resolution

• Unlimited number of strokes

• Max. 36klbs stroke force

• Real time surface readout and control of stroker force and position

Electrohydraulic Stroker

Pad anchor slips

• PrecisionStroker Benefits • No wire movement necessary for force activation

• Pad type slips minimize anchor impact

• Hi-resolution stroke position and control, plus no stroke creep

– enables precise tool component space-out in lubricator package

• PrecisionStroker Functionality • Eline deployed / powered electrohydraulic device

• Anchors in casing/tubing, applies axial force to install, retrieve and

manipulate completion components

Powered Stroker Evaluation 10

• Customization and preparation for operation

• Stroker configured with large multi range slips

to fit specific lubricator ID

Custom built 6.5 in. anchor section • Set to mid-stroke starting position giving

ample stroke distance in either direction

Example space-out configuration

• Critical toolstring space-out calculated

and applied • Anchors to set within speedlock connector

in lubricator package

• Space-out weight bars positioned directly

opposite well control shear ram

Stroker submerged in ice for testing

• Stroker tool shop tested close to sea-bed

temperature (- 2°C) • for hydraulic oil selection and measure tool

response

Operational Execution 11

• Knarr A-01 (412 m.)

• Initial trial conducted on shallow water subsea well

Retrieved lower Crown Plug, Knarr • Valuable lessons learned

• Applied pull force and fluid pressure relationship

during plug retrieval

• Knowledge of applied force required for installed

plug confirmation

• Final step to fully qualify the Stroker for deep water application • Critical spaceout verified

• Stroker functionality and application success confirmed

• Ormen Lange B-6H (859 m.)

• Work processes adjusted and optimized • Increased stroker force values were applied

• Increased operational efficiencies realized

• Real-time surface readout proved invaluable Realtime user interface example of upper crown plug pulling operation

Powered Stroker Application

• Instrumented PrecisionStroker real-time surface read-out user interface

Generic Toolstring data o Tool depth

o Power

o Inclination

o Head tension

Specific Stroker data: o Stroke position

o Stroke force

o Anchor force

o Control Parameters

12

Realtime user interface example of upper crown plug pulling operation

Conclusions 13

Slickline jarring for crown plug setting and retrieval is a common, successful practice

Use of an electrohydraulic Stroker Tool was proven to be a viable alternative

Accurate and controlled real-time Stroker force and position brings a high level of precision

and certainty to crown plug setting and retrieval operations

Stroker toolstring design and spaceout is easily manageable, can be optimised

Selection of optimal hydraulic oil to effectively operate the Stroker in a low subsea temperature

environment is achieved

Further efficiency gains can be achieved with more practice on this new method

• Thanks to Shell Norway for the

participation in this Project and the

permission to present the work

complete at their wellsite(s)

• A particular thanks to Knut Hals from Shell Norway for his ongoing

support and cooperation

• Thanks to Altus Intervention and

TIOS Teams whom made this

possible, and completed the work in both a safe and effective manner

• Watch the Case History Video

Acknowledgments 14