Main Presentation Title (42 pt Univers 57 Condensed)

Andy Martin

IPS-15-15

Modern Slickline Perforating Applications in the North Sea21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/20151Schlumberger ConfidentialAgenda

* Mark of SchlumbergerIntroductionSlickline Controlled SystemReal-Time

21 May 2015, #IPS-15-15 Modern Slickline Perforating Introduction

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/20153Schlumberger ConfidentialSlickline Benefits and LimitationsBenefits of Slickline interventionSmall footprint, mechanical integrity, logistical simplicity, operational efficiency, cost efficiency

But with inherent limitationsLimited visibility and clarity of downhole toolstring actions and status Limited depth precisionLimited downhole functionality Over-dependence on slickline operators experience level

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/20154Schlumberger ConfidentialHistorical Slickline Perforating No real time correlation Parameter run Limited application21 May 2015, #IPS-15-15 Modern Slickline Perforating SL Depth ControlMemory GR-CCL logTool string same weight and OD as perforating stringMark lineMatch to reference logCalculate offsetPerforating runRun to depth markCorrect to offsetPosition on depth

Reference: SPE 8153621 May 2015, #IPS-15-15 Modern Slickline Perforating 6SLBSchlumberger ConfidentialSlickline Controlled Systems

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/20157Schlumberger ConfidentialSlickline Controlled Firing Head

Introduced ~1999No parameters runNo primary explosives & RF safeDirect control at all timesIndependent control of two tools>1000 runs to date in North Sea alone

21 May 2015, #IPS-15-15 Modern Slickline Perforating Pulsed Controlled Firing HeadTo Pressure SensorPressureTransducerBatteryControllerCircuitsInitiatorCircuitsEFIDetonator

StrainSensorPulse generated by pulling up 2 to 3 ft or more depending on depthSPE 723251min1.5 min1min1min1.5 minGet on depthFire 5 min

2 min21 May 2015, #IPS-15-15 Modern Slickline Perforating Early North Sea ApplicationsInde platform: Punch above stuck plug (SPE 72325)Ravenspurn: Packer set near surface (no pressure contrast SPE 72325)Cut tubing on abandonment of 40 wells on Hutton TLP80 days saved

Hutton TLP21 May 2015, #IPS-15-15 Modern Slickline Perforating 10SLBSchlumberger ConfidentialRecent ExampleOffline HT Well>100 ft of perforating at ~350degF, ~5000 psi on gas wellOperator choose slickline as more cost effectiveEasier rig upPressure control easier on gas wellRunning speeds higher than wireline2 7/8 guns with rock-optimized HNS charges

2 correlations runs and 8 successful perforating runs

21 May 2015, #IPS-15-15 Modern Slickline Perforating 11SLBSchlumberger ConfidentialReal-Time

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/201512Schlumberger ConfidentialReal-Time Shot Detection

21 May 2015, #IPS-15-15 Modern Slickline Perforating

Real-Time SlicklinePrecision, certainty and control across all slickline operations Correlation PrecisionAccurate real-time depth correlation and validation of toolstring position relative to completion or reservoir Confirmation of statusSurface read out of tool actions and status, reducing uncertainty and eliminating unnecessary trips Continuous controlDynamic toolstring control via robust digital communication, allowing real-time program changes21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/201514Schlumberger ConfidentialDigital data telemetryReal-time, two way communication with tool-string

Real-Time Slickline

Telemetry NOT powerSurface readout of critical dataShock, deviation, head tensionGamma Ray and CCLBorehole pressure and temperature Surface controlled jarring, tool release and perforating

Specifically-built tool modules to perforate, perform production logs, set plugs/packers

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/201515Schlumberger Confidential

Basic Measurement CartridgeDigital Correlation CartridgeDigital Pressure GaugeDigital Controlled ReleaseTrigger ModuleExplosive Devicei.e. Gun Cutter Plug Setting Tool

Optional App ToolsCore App Tools

Tool Description

D-Trig

Real-Time Data21 May 2015, #IPS-15-15 Modern Slickline Perforating 16Schlumberger ConfidentialReal-Time Example

Explosive-Free SettingElectro-hydraulic setting toolReal-time depth controlPlug setting QC in real-time

21 May 2015, #IPS-15-15 Modern Slickline Perforating Well Abandonment

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/201518Schlumberger ConfidentialTypical North Sea AbandonmentBarrier planningWell integrity logsBarrier installationCutters, plugs, cement retainers, punchersBarrier verification

21 May 2015, #IPS-15-15 Modern Slickline Perforating 19SLBSchlumberger ConfidentialSlickline WorkSet bridge plugCut tubingPunch casingSet cement retainer

All performed with slickline electronic firing head or real-time systems

21 May 2015, #IPS-15-15 Modern Slickline Perforating 20SLBSchlumberger Confidential

Head TensionPressureTempCCLShockTemperature dropsTension up 40 lbsPressure drops 140 psi Detonation shockTubing Punched21 May 2015, #IPS-15-15 Modern Slickline Perforating Industry PublicationsOTC 23916 Impact of DSL for P&A Operations

SPE 154439 Risk Reduction and Efficiency Gains Through Application of DSL

SPE 168292 Beyond Logging: Slickline Operations Can Now Provide More Efficient and Cost Effective Alternative to Traditional Intervention Operations.

SPE 168270 Perforating and Pipe Recovery with Digital Slickline First Application in Colombia Field

SPE 168252 Real Time Slickline: Unlocking Additional Production With Reduced Uncertainties in Limited Space Platforms

21 May 2015, #IPS-15-15 Modern Slickline Perforating 5/20/201522Schlumberger ConfidentialPerforating

IntroductionSlickline Controlled SystemReal-Time

Questions?21 May 2015, #IPS-15-15 Modern Slickline Perforating