Thru Tubing ESP-Cable Deploy - platinum - Petronas

Presentation Title (acronym) ;Division – Name/OPU/HCU/BU (acronym) ;Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 1

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Thru Tubing ESP-Cable Deploy

Alternative Artificial Lift Team @ PETRONAS

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Introduction

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Concept of the technology

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Project Background

23 May 2018

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ESP Deployment Method

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Thru Tubing ESP - CD System

Pump OD

Motor

Operating

Temperature

Operating

Liq Rate

Range

Technology

Readiness

Gas Handling

Permanent Magnet

Motor (Proven)

Speed: 8500rpm

Rated Power: 47HP

Up to 300⁰F

157-629blpd

BEP:500blpd

TRL#5

(Approved on

4th May 2017)

Via gas handler,

GVF limit 40%

2.17”

Insert SCSSV

Cable

Termination

Spool

Deployment

Unit

Well Control

Equipment

Retrievable

Packer

Special design spool

equipped with

vertical & horizontal

penetrators and

cable hanger.

New insert safety

valve with 0.8” cable

feed thru and lock

profile matched with

existing nipple.

Similar specifications

to a braided line unit

with winch designed

for 0.8” cable.

Quad BOP with

special rams for 0.8”

HDPE type cable

and dual-pack off.

Retrievable packer

designed with anti

torque PBR and ESP

profile intake.

Internal

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Applications of the technology

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Well Screening Criteria for TT-ESP217 Series (BEP 500 bbl/day)272 Series (BEP 1200 bbl/day)

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TTESP General Cost Breakdown

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BO-309

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Location:

Bokor

(Offshore Miri,

Sarawak)

Completion:

BO-309T – Sand A3/A6

Well Status:

BO-309T :

Flowing (GL)

Last Production

BO-309T :120

bopd (Oct ’15)

Cum Oil Prod. /

Reserves @ 1.1.15

BO-309T : 0.350

MMbbl / 1.594 MMbbl

Diagnosis:

BO-309T ESP cable is grounded hence the ESP is not able to

run anymore. Well is currently flowing via GL in the mean time

before an ESP replacement is done. TTESP installation is

proposed for this well in place of the conventional WO

method.

Job objective:

To perform TTESP installation via wireline deployment method

and wellhead modification in order to achieve 200 bopd gain

at well level and 150 bopd gain at field level from GL gas

reallocation, accelerating 0.3 MMSTB reserves production from

this well.


Overall TTESP-CD Installation Timing

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1. Prolong TIT due to:

2. TTESP BHA installation tool longer than expected due to replacement of the failed downhole sensor

3. Cable hanger installation could not be installed as per program (NPT of 12-14 hours)

4. Overall TTESP installation went smoothly without major incidents, however number of constructive findings were recorded


Planning – Onshore Trial Labuan

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Installation equipment setup

TTESP assemblyTraining well workover to ensure integrity for flow test and insert valve setting

Cable Hanger & Penetrators

Cable termination spool installed on dual completion


Installation – Bokor 309 SKO

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Deck Layout

Cable termination spool installation

TTESP RIH with PCE

TTESP assembly

On Production


Value creations

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The UEC for Conventional ESP is ~RM43/boe. The trial for other deploymenttechniques such as Thru Tubing (rig-less) may potentially lower down the UEC to~RM34/boe.

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Conventional ESP vs TTESP

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Value Creation

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Limitation & Potential Improvement

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Uncertainties/operational constraints

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1. ESP system oil servicing (filling) during assembly must be done from bottom up therefore ESP cannot be assembled exactly like a wireline string

2. ESP system length is extremely long – for deeper wells could prove difficult or impossible in current configuration to install on live well.

3. Flowrate – presently maximum rate deliverable is around 1500bbl/d for 3.5” tubing

4. 2-7/8” insert safety valve has very small flow area

Limitations

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Solutions/developments/improvements

1. Novomet to provide oil containing ESP units which can be assembled without oil servicing or a system which can be oil filled from the bottom.

2. Novomet are developing a system which can be deployed in sections and working on a set of rams which can close around a sealed part of the ESP system.

3. Novomet working on higher rate 217 and 272 systems.

4. Looking at other options from other vendors for the insert safety valve to increase flow area.


Thank you

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Thru Tubing ESP-Cable Deploy - platinum - Petronas

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