Conference SPE DORIS Total 12102017 - SPE France - Home · · 2017-10-18Follow-up of Schlumberger...

DORIS Presentation

SPE Conference, 12th October 2017

© F

.Lucazeau

Vice-President Engineering

DORIS Project Manager

& Technical Sponsor for MHN Project

DORIS in few words

DORIS involvement along Moho Nord development

Key contributions to a successful Project

50+ years of experience

in providing engineering services

to the upstream oil and gas industry.

From wellhead to export§ Topsides

§ Subsea systems

§ UFR (Umbilicals, Flowlines, Risers)

§ Surface facilities (fixed or floating)

§ Mooring systems

§ Export systems (Pipeline, OLT, etc.)

From early conceptual studies to detailed engineering…

© F.Lucazeau

FPSO | FPU as main production unit

TLP | SPAR | Semi-Sub for the wellhead platform

Full subsea development

Conceptual studies

Pre-Project

Basic Engineering | Hull & Topsides

Topsides Early Detailed Engineering for HHI

Mooring Detailed Design & Assistance during hook-up

Conceptual studies

Pre-Project

Design Competition with HHI / HOE

« Basic Detail » Engineering for HHI

Conceptual studies

Basic Engineering of UFR & SPS

UFR & SPS Contractors Follow-up

Parallel studies during Detailed Engineering

DORIS partnership with local engineering EMEXDIS

Integration to N’Kossa:

Detailed Engineering works

§ Structural design of supporting structures

§ I-tube installation

§ Pig trap installation cinematics

§ Brownfield tie-ins and modifications

A multi-site Project with engineering teams over 4 continents

Focus on keeping FPU topsides weight unchanged

Moho Nord TLP, an innovative drilling tool

MHN FPU, a singular floating unit

A multi-discipline challenge with

strong interfaces.

Small size unit…

.. with 14 topsides modules/areas

Highly sensitive to topsides weight

and CoG elevation

§ Methodologies set up with TOTAL

- Key follow-up parameter on a monthly basis

- Each Technical Query shall mention the impact on unit weight or not

- Weight control weekly meetings set up during Detailed Engineering

§ Close development & monitoring of interfaces (int.+ext.) to control weight

§ Culture handover and collaboration with HHI during Detailed Design

§ Minimal room left for uncertainty

§ Flexibility during EPC phases

§ Continuous and supportive discussions between teams to accommodate variations

along project life

Modifications of design at start of Detailed Engineering:

§ Modification of the production strategy (Abian & Miocene reservoir) –

New equipment

§ Additionnal equipment to improve availability & modification of LLI

§ New floor to the Technical Building

Engineering focused on keeping topsides weight controlled To

psid

es

we

igh

t| G

ross D

ry


Moho Nord TLP, an innovative drilling tool


Albian reservoirs challenge: a complicated reservoir

Numerous well interventions needed

Go for a Tension Leg Platform with surface wellheads

Innovation to overcome constraints

§ Reduce drilling campaign duration

§ SIMOPS: drilling, well intervention & production

§ On a congested upper deck

Put an idea into a workable “swiss-knife” tool

Coiled

Tubing Reel

Derrick

Equipment Set

Coiled Tubing

Unit

Coiled Tubing

Tower Base

Design of an integrated system for well

intervention: Fit for Purpose Coiled Tubing Unit

A skiddable unit to move underneath the drilling set

§ To reach any Xmas tree position

§ Stepping over the drilling set transverse beam

Motion-compensated

§ to accomodate the stroke between TLP and

Coiled Tubing string

From conceptual studies to integration :

Concept thought out with TOTAL

Engineering performed in parallel of HHI TLP Detailed Design

Call for Tenders launched in 2014 based on DORIS Basic Design.

Follow-up of Schlumberger within TOTAL teams up to integration

and interface management with Drilling contractor : laser survey

performed to ensure proper integration

Copyright © DORIS Engineering

All rights reserved. The information contained in this document is intended for general information only,

as it is summary in nature and subject to change. Any third-party brand names and/or trademarks

referenced are either registered or unregistered trademarks of their respective owners

Moho Nord Project

A Complex and Innovative DevelopmentA Complex and Innovative Development

SPE Conference – Paris - 12 October 2017

CG-MHN-00-MNQA-100027 Rev03

Introduction : Moho Bilondo (Congo)Moho Bilondo license75km off shore75km off shore

450 m WD (southern area)

1200 m WD (northern area)

Moho (southern area)developed in 2008 with FPU

Alima

capacity 90 kbopdcapacity 90 kbopd

Moho Nord Projectextension southern area

development of northern area

Production

exported to on-shore Djenoexported to on-shore Djeno

terminal

operated by Total (53.5%)

Chevron (31.5%), SNPC (15%)

P.2Moho Nord Project – SPE Conference - Paris 12 Oct 2017

Moho Nord project perimeter : two sub-projects & three reservoirs

km0 5

Miocene

Moho

N dExtension southern area

MIOCENE (northern

area)

Unconsolidated sand

1200 m water depth NordExtension southern area

Miocene reservoir

tied back to exisiting Alima FPU

1200 m water depth

1000 m reservoir burial

Albian

production in December 2015

Development northern area

ALBIAN (northern area)

Carbonates

800 m water depthTLPFPU Miocene reservoir

a subsea network with new FPU

first oil on 14th March 2017

800 m water depth

3000 m reservoir

burial

FPU

Alima

Albian reservoir

TLP with surface well heads

MIOCENE (southern

area)

PHASE 1 BISAlima

Miocene on stream in May 2017PHASE 1 BIS


Phase 1bis

Southern area : tie back to MOHO FPU ALIMA (phase 1 Bis)

Alima existing FPU

upgrade and

debottlenecking

Extension

of exisiting

+ 40 kbopd

production

loop

(4 wells)

Addition of a new loop,

(7 wells + Multi Phase Pump)


Southern area : ALIMA FPU upgrade (phase 1 bis)

Capacity : 150 kbopd max liquid

1,500 tons new equipment

• Installation of valve

module

• Installation of new

separator

3.6 MM manhours in SIMOPS

Integrated team ‘ITEAM’

separator

(Alpha/Beta loop)

• Installation of E/I

room

• Installation of PCM

module (MPP

control center)

• Replacement of 2

dead oil pumps

(increased power)

• Replacement of 2Replacement of 2

methanol pumps

(increased power)

• Installation of new

EDG

• Installation of

transformers and HP


Northern area development concept : TLP + FPU

Miocene : FPU

conventional subsea network

Albi “ d” TLP FPUTLP

Albian: “unmanned” TLP

Deeper wells longer duration, drilling while

producing

FPU

Frequent well interventions, coil tubing tower

Minimal facilities. Process and power on FPU

Miocene & Albian incompatible watersMiocene & Albian incompatible waters

(Barium Sulphate Scales)

separate production trains on FPU


Subsea part of Moho Nord Development (SPS & UFR)

NkossaNkossaDjénoDjéno

Moho Nord FPUMoho Nord FPU

-1 oil export line to Djéno -Transfer lines

Moho Nord TLPMoho Nord TLP

DjénoDjéno

1 G lift li ( ith

p j

terminal ( 80 km of 16”)

- 1 gas exchange line with

Nkossa facilities (18 km of 6”)

Transfer lines

between TLP

& FPU

1 t i j ti li ith

-1 Gas lift line (with

3 In-line Tees)

-Length : 12 km

-Diameter : 6”

4 Slots

1 water injection line with

6 wells (4 In line tees)

Length : 12 km

Diameter : 10”

4 Slots

Manifolds

6 Slots Manifold-1 production loop with 11 wells

-Length : 2 x 12 km

-Diameter 10”UMBILICALS


UMBILICALS

Tension Leg Platform (TLP) – Albian reservoir

TLP allows drilling while producing

Well intervention by Coil Tubing without rig

Connected to FPU by Fluid Transfer Lines (FTL)

First TLP in Africa for Total

30 years Design Drilling from TLP (dry

60m x 60m x 60m

Unmanned

wellheads)

Drilling with Semi-Sub Tender

platform

Deck : 5 500 t

Assisted Rig and non

permanent derrick set

Hull : 9 900 t

27 slots available

Rigless work-overs (coiled

tubing)


Floating Production Unit – Miocene reservoir

Capacity ~ 150 kbopd liquid

Hull (250 x 44 x 18 m) ~ 35 kt

Topsides ~ 20 kt gross dry

Power generation : 75 MW

FPU & TLP controlled from

FPUFPU

Wash Tanks : final separation

& desalination (spec export)

Sulphate reduction of water

to inject into Miocene

Gas import/export to Nkossa

Crude export to Djeno


Best available technologies to minimise environnemental impact

All l t i FPU tiAll-electric FPU generating

all the power needed by the

facilityfacility

Produced water treatment

and reinjection with no

discharge

No routine flaring aided by

a flare gas recovery unit


Moho Nord project : key numbers

additional production : 140 kboe/d

45 development wells45 development wells

less than 4 years from FID to First

Oil

more than 50 MM manhoursmore than 50 MM manhours

TRIR 0.83, LTIF 0.15 (/MM manhours)


MOHO NORD – key dates timeline

Mar 2013 9 Dec 2015 Q1 2017 14 Mar 2017Oct 2016Jul 2015Oct 2014 Jan 2016Apr 2015

FID

9 Dec 2015

First Oil

Phase 1

Bis

FPU HUC.

Connection

to Djeno

First Oil

Moho

Nord

FPU

Sail-Away

Start offshore

Campaign

Start

Drilling

TLP

installation

Alima

modules

lifting


Moho Nord project : challenges

Execution during industry downturn

TLP i t ll d h t dTLP on pre-installed anchor tendons

Fast-track SPS deliveries

Complex UFR installation campaign

In Country Value createdIn Country Value created


Moho Nord project – Conclusions

Innovative development scheme

two reservoirs with two different floating units (FPU &

TLP)

Completed in less than 4 years within budget.

Oil water gas available within three weeks of start-upOil, water, gas available within three weeks of start-up

Limited environmental impact :

All-electric, PWRI, no routine flaring

Significant in-country value :

infrastructure, fabrication and training

Total -

confirmed as largest operator in Congo

Congo -

confirmed as a deepwater producer in Africa


FILMFILM

Moho Nord - epilogue


NextNext –

Doris Moho Nord presentationDoris Moho Nord presentation


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