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HPHT Case Study:

Kristin Field, North Sea

Craig Newman

Senior Engineer, Subsea Systems

NOV Texas Oil Tools

1


Personal info

2010 BSME Texas Tech University

Joined TOT as Mechanical Engineer

Worked with Land and Subsea Equipment

Senior Engineer, Subsea Systems -

Since 2012

2


NOV TOT Background

Coiled Tubing / Wireline Pressure Control

Equipment

Founded – 1978

First subsea – 1987

3 BOP Actuator models

Deployed around the world

3


Subsea BOP for Well

Intervention

5.12” 15ksi Thunderhorse Project7.38 10ksi Subsea Dual Combi

4


EIA Actuator

5


Subsea Safety Head

6


Past Projects

• 3.06” x 2.06 5K Sun Balmoral 1987

• 4.06” x 2.06” 5K Sun Balmoral 1989

• 5.12” 10K Camco Stena Seawell 1988

• 4.32” x 4.32” x 2.06 Shell UMC 1991

• 4.06” 5K Amerada Hess 1991

• 5.12” x 2.06” 5K Tordis Project 1993

• 5.12” X 2.06” 5K Shell Nelson Project 1992

• 4.06” x 2.06” 10K Elf-Lille Frigge Project 1993

• 5.12” x 2.06” 10K Norske Hydro Troll OLJE Project 1993

• 5.12” x 2.06” 10K Esso Balder 1996

• 5.12” x 2.06” 10K BP Foinaven Project 1995

• 4.06” x 2.06” 10K Exxon Zinc 1991

• 5.12” 10K Well Ops for Stena Seawell 1997

7


Past Projects

• 5.12” x 2.06” 10K FMC GOM 1999 (8200’ water depth)

• 5.18” x 2.06” 15K FMC BP Thunder Horse (10,000’ depth)

• 5.12” 10K FMC Woodside 2004 (10,000’ water depth)

• 5.12” 10K FMC Ensfield 2004 (10,000’ water depth)

• 5.12” 15K BP Plutonio “EI”

• 7.06” 10K FMC Tyrihans – Statoil “ET”

• 7.06” 10K FMC Gjoa – Statoil “ET”

• 5.12” 10K FMC Gummusut “EI”

• 7.38” 10K Vega Statoil “EI”

• 5.12” 10K EI FMC Clove

• 5.12” 10K EI FMC Laggan Tormore

8


Current Projects

• 5.12” 10K EI Hibernia (Shear solid 2” bar) – Special

• 5.12” 15K EIA OWIRS

• 5.12” 10K EI Actuators for Brazil – Petrobras

• 7.06” 10K ET Chevron Wheatstone

• 5.12” 10K EI Statfjord – Statoil

• 7.06” 10K ET TTRD RLWI

• 7.06” 10K ET RLWI #4

• 7.38” 10K EIA BP Nakika

• 7.38” 10K EIA Blue Ocean

9


HP/HT

What is HP/HT?

10


What Standards Exist to Define

HP/HT Equipment Requirements?

API 6A (ISO 10423)

API 16A (ISO 13533)

NORSOK D-001

API TR 1PER15K-1

11


HP/HT Definition

API 6A (ISO 10423)

Temperature ratings max at 250°F (121°C)

12


HP/HT Definition

API 6A (ISO 10423)

Annex G – Design and rating of equipment

for use at elevated temperatures

13


HP/HT Definition

API 6A (ISO 10423)

Annex G

14


HP/HT Definition

API 6A (ISO 10423)

Annex G

15


HP/HT Definition

API 6A (ISO 10423)

Annex G

16


HP/HT Definition

API 6A

(ISO 10423)

Annex G

17


HP/HT Definition

API 16A (ISO 13533)

Temperature ratings max at 250°F (121°C)

18


HP/HT Definition

NORSOK Standard D-001

A system is considered HP/HT when

either, or both, of the following criteria are

metOver 300°F (150°C) Bottom Hole Static

Temperature

Over 10,000psi (690 bar) Wellhead Shut-in

Pressure

19


HP/HT Definition

API TR 1PER15K-1

A system is considered HP/HT when either

of the following criteria, or both, are met

Over 350°F (177°C) Flowing Temperature

Over 15,000psi (103Mpa) MASP

20


HP/HT Definition

API 6A

(ISO 10423)

API 16A

(ISO 13533)

NORSOK

D-001

API TR

1PER15K-1

High Pressure N/A N/A >10,000psi

(690 bar)

>15,000psi

(103 Mpa)

High Temperature >250F (121C) >250F (121C) >300F (121C) >350F (121C)

21


HP/HT

How do we design and qualify for it?

22


NOV TOT Equipment Used in

Kristin Field

ET76 7.06in 15ksi “Safetyhead”

Deployed in 2006

Tested to 295°F (146°C)

Qualified to 34-212°F (1-100°C) Gas Tight

23


Safetyhead Qualifications

FAT

API 16A (ISO 13533)

API 6A (ISO 10423)

PR2

API 6A (ISO 10423)

Appendix F.2.5

Appendix F.1.11.3 (e-q)

Ram Temperature

API 16A (ISO 13533)

5.8.2 (Annex D.2 & D.4)

24

Fatigue Test

API 16A (ISO 13533)

5.7.2.2 (Annex C.2.2)

Hyperbaric (10,000ft / 3048m)

ISO 13628-4

Appendix L

Ram Access

API 16A (ISO 13533)

5.7.2.6 (Annex C.2.5)

Shear Test

Norsok D-002

Appendix B

Industry Standards


4-Well Batch Testing

Test Media Temperature Wellbore

Pressure

Function

Cycles

Pressure

Cycles

Hydrostatic 34°F (1°C) 10,000psi

(690 bar)

24 4

Flow Kristin Condensate at 250°F (121°C) - 16 hours

Hydrostatic 250°F (121°C) 0psi 3 -

Hydrostatic 250°F (121°C) 10,000psi

(690 bar)

- 1

Hydrostatic 250°F (121°C) Cooling

to °34F (1°C)

10,000psi

(690 bar)

- 1

Nitrogen Gas 250°F (121°C) 10,000psi

(690 bar)

- 4

Nitrogen Gas 250°F (121°C) 750psi

(51.7 bar)

- 3

25


Kristin 4-Well

Batch Testing

Kristin Condensate

Required

Extended Heating Time

Increased Ram Cycles

Simulate Successive

Completions on 4 wells

API 16A

Standard Oil Used for

heating

Simulate Operational

Temperature Range

26


Moving Forward…

Industry Standard

Field Feedback

Positive/Negative

27

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HPHT Case Study: Kristin Field, North Seaproductioneu.offsnetevents.com/uploads/2/4/3/8/24384857/__tot... · HPHT Case Study: Kristin Field, North Sea Craig Newman ... API 6A (ISO