The C-Kore Subsea TDR Automated Cost-Effective and Reliable Subsea - - PowerPoint PPT Presentation

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The C-Kore Subsea TDR Automated Cost-Effective and Reliable Subsea - - PowerPoint PPT Presentation

Dec 28, 2023 348 likes •865 views

1 The C-Kore Subsea TDR Automated Cost-Effective and Reliable Subsea Testing 2 C-Kore Introduction Greg Smith General Manager Working with C-Kore for 8 years Frequently supported products in the field 3 C-Kore Contents

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SLIDE 1

The C-Kore Subsea TDR

Automated Cost-Effective and Reliable Subsea Testing

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SLIDE 2

C-Kore Introduction

Greg Smith

  • General Manager
  • Working with C-Kore for 8 years
  • Frequently supported products in the field

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SLIDE 3

C-Kore Contents

Introduction C-Kore vs Traditional Fault-Finding Case Study TDR Theory

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SLIDE 4

Introduction

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SLIDE 5

C-Kore Applications

Subsea Tools for: Installation/Commissioning Fault-finding Operations Down-hole Testing

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SLIDE 6

C-Kore Subsea Testing Tools

Cable Monitor (IR & Continuity) Subsea TDR Pressure Monitor Subsea Modem

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SLIDE 7

C-Kore Development

Started in 2010

Development

2011

Cable Monitor Prototype Trials

2015

Cable Monitor Released

2017

Cable TDR Prototype Trials

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SLIDE 8

C-Kore TDR Specification

Specification

Range of over 20km Precision of 10cm Gain up to +52dB Automated pulse and step modes

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SLIDE 9

C-Kore TDR Specification

Results

All results datalogged Built-in analysis tools with C-Kore result viewer Easy report generation

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SLIDE 10

Time Domain Reflectometry

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SLIDE 11

TDR Theory of Operation

  • Operation:
  • Transmits an electrical pulse and measures reflections

(similar to sonar)

  • Identifies:
  • Distance to end of line / discontinuity
  • Type of discontinuity / termination

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SLIDE 12

TDR Reflection Impedance Change

TDR

Amplitude Time

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SLIDE 13

TDR Reflection Impedance Change

TDR

Amplitude Time

Time = Distance to fault Time = Distance to line end

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SLIDE 14

TDR Reflection Further Examples

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SLIDE 15

C-Kore vs. Traditional

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SLIDE 16

TDR Deployment Traditional Method

  • 1. Vessel arrives in field
  • 2. ROV launched
  • 3. Downline deployed (move to safe distance)
  • 4. ROV derigs and connects downline
  • 5. TDR testing from back-deck

Downline Issues: Impedance mismatch at interfaces Extra attenuation (reduced range) Operator skill under time pressure Quality of saved data

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SLIDE 17

TDR Deployment C-Kore Subsea TDR

  • 1. Vessel arrives in field
  • 2. ROV launched
  • 3. ROV connects and triggers C-Kore TDR

C-Kore Benefits: Matched impedance (no extra reflections) Direct measurement (see extra detail) Automated and repeatable Interactive result analysis

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SLIDE 18

Case Study: Fault-Finding

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SLIDE 19

Case Study Fault Finding

Background LIM shows IR failure on one channel Some spare cables available If umbilical failed (suspected) will need to decide repair vs replace

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SLIDE 20

Case Study Fault Finding

Supplied in small peli-case Deploy in work basket

  • r tooling tray

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SLIDE 21

Case Study Fault Finding

Usage

Test routine pre-programmed for simple subsea deployment Connect directly to subsea equipment, no downlines required Trigger measurement with light sensor, proximity sensor or schedule

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SLIDE 22

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Cables) Static Umbilical (2 Cables)

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SLIDE 23

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Cables) Static Umbilical (2 Cables) C-Kore Cable Monitor: IR Measurement

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SLIDE 24

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (2 Cables)

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SLIDE 25

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (2 Cables)

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SLIDE 26

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (2 Cables)

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SLIDE 27

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (2 Cables)

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SLIDE 28

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (2 Cables)

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SLIDE 29

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU

W1 W2

SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (2 Cables)

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SLIDE 30

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables)

W1 W2

Static Umbilical (2 Cables)

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SLIDE 31

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables)

W1 W2

Static Umbilical (2 Cables)

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SLIDE 32

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables)

W1 W2

Static Umbilical (2 Cables)

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SLIDE 33

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) 2. 1.

W1 W2

Static Umbilical (2 Cables)

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SLIDE 34

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2 34

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SLIDE 35

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable) TDR

W1 W2

C-Kore Cable TDR: For fault location

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SLIDE 36

Case Study Fault finding with Subsea TDR

IR fault identified using C-Kore Cable Monitor

  • n infield umbilical

Location will decide repair or replacement C-Kore Cable TDR used to determine location

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SLIDE 37

Baseline measurement Measurement on cores with good IR EFL to umbilical connection seen in impedance at beginning of graph Umbilical trace then flat showing no further discontinuities

Case Study Fault finding with Subsea TDR

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SLIDE 38

Fault measurement Measurement on cores with low IR EFL to umbilical connection seen in impedance at beginning of graph Discontinuity seen at 270m indicating fault location

Case Study Fault finding with Subsea TDR

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SLIDE 39

Case Study Fault Finding

Platform

Dynamic Umbilical (4 Cables) Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2 39

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SLIDE 40

Case Study Fault Finding

Platform

Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (4 Cables) C-Kore Cable Monitor: IR Measurement

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SLIDE 41

Case Study Fault Finding

Platform

Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (2 Good Cables)

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SLIDE 42

Case Study Fault Finding

Platform

Static Umbilical (3 Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (2 Good Cables)

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SLIDE 43

Case Study Fault Finding

Platform

Static Umbilical (2 Bad Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (2 Good Cables)

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SLIDE 44

Case Study Fault Finding

Platform

Static Umbilical (2 Bad Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (2 Good Cables)

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SLIDE 45

Case Study Fault Finding

Platform

Static Umbilical (2 Bad Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (2 Good Cables) TDR C-Kore Cable TDR: For fault location

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SLIDE 46

Case Study Fault Finding

Platform

Static Umbilical (2 Bad Cables)

SDU SDU

W3 W4 W5

Static Umbilical (2 Good Cables) Static Umbilical (1 Bad Cable)

W1 W2

Dynamic Umbilical (2 Good Cables) TDR Again, TDR shows faults in middle

  • f cable length

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SLIDE 47

Case Study Trace Viewer

C-Kore Interactive Trace Viewer

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SLIDE 48

Case Study Fault Finding with Subsea TDR

Pre-programmed test routine removes the need for skilled TDR operator.

automated

No downline deployment / recovery time. No waiting for platform testing.

fast, liberated

Measurements made directly

  • subsea. No errors from

impedance mismatches.

direct, reliable

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SLIDE 49

Case Study Fault Finding

  • Vessel Time
  • Personnel and Equipment

Cost savings

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SLIDE 50

Simplifying Subsea Testing

Thank You, Any Questions?

C-Kore Systems

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