5th Ghana Summit-Oil& Gas

Rotary Steerable Supercharged Drilling

PowerDrive vorteX*

Pius Okafor

Agenda

Introduction-Rotary Steerable system

Supercharged Drilling Powered by PowerDrive

vorteX*

Evolution of the PowerDrive vorteX*

PowerDrive vorteX* Application

PowerDrive vorteX Key Features

Schlumberger Rotary Steerable solution suites

2

Directional Drilling Tools Overview

Ste

era

ble

Moto

r 80’s

Dynadrill

Moto

r 60’s

Short Radius PowerPak Motor

3

Schlumberger Rotary Steerable Family

PowerDrive X6*

Power V*

PowerDrive vorteX*

PowerDrive X6*

Power V*

PowerDrive Xceed*

PowerDrive vorteX*

PowerDrive Archer*

4 PowerDrive is a mark of Schlumberger.

PowerDrive Xceed*

PowerDrive Archer*

PowerDrive Orbit*

The Drive for Performance P

enet

ratio

n R

ate

Drive Mechanism

Directional Drilling Performance Drilling

Motors

RSS

Motors

Motors RSS

6

PowerDrive vorteX* Powered Rotary System

Supercharged drilling:

– Customized drilling assembly designed for performance

– Minimal wellbore interaction

– Power to the bit

– Optimizes penetration rates on rigs with surface

torque capability issues

– Reduces casing wear

Components:

– Integrated power section

– New-generation bearings and

transmission

– Control unit

– Steering section

Applications

Hard rock, problem formations

Challenging downhole environment

– High shock / vibration / stick slip / differential sticking

Rig / Top Drive limitations

Tubulars

– Casing wear

– Drill pipe fatigue

Why vorteX ?

Non optimal drilling is caused by

Rotating PDMs with large bent housing settings

Anchored rotary steerable systems needing high well bore interaction

Annular bottle necks preventing optimal flow

Badly matched bit/drive mechanism combinations

Motor BHA

PowerDrive BHA

PowerDrive vorteX –

Optimized Drilling Every Time

Optimal Drilling is the result of

Fit for purpose drilling assemblies designed for performance

“All rotating” rotary steerable systems needing minimal well bore interaction

The correct application of down-hole and surface power

Well matched bit/drive mechanism combinations

PowerDrive vorteX – Configuration

Optimal Drilling is the result of

PowerDrive vorteX Powered by PowerDrive X6

- Push-the-Bit

PowerDrive vorteX Powered by PowerDrive Xceed

- Point-the-bit

Power Section

Specifically designed integrated 7/8 rotor stator power section

High torque output of 18k ft/lbs at 1200gpm

Optimized high temperature elastomer as standard (HN234)

Filter, Bearings, Transmission

Specifically designed bearings and transmission for

increase load and high torque output of power section

Increased weight on bit capability to maximise drilling

performance

Integrated down-hole filter below power section

to increase steering section reliability

Control Unit and Steering Section

All rotating steering section to maximize penetration rate – no

downhole anchor

Cruise control functionality

System temperature rating at 150°C

Full reaming/back-reaming capability

Proven high reliability RSS design

Versatile stabilizer placement

PowerDrive vorteX Applications in GIR*

Challenging downhole environment

– High shock / vibration / stick slip

Performance improvement

Top hole Riserless Jet and drill ahead

Rig / Top Drive limitations

* Ghana, Ivory Coast and Remotes

Average Performance Gains

Increase in Effective Penetration Rates

Conventional RSS vs PowerDrive vorteX

0

20

40

60

80

100

120

140

160

180

12 1/4-in. hole 8 1/2-in. holePerc

enta

ge incre

ase in p

enetr

ation r

ate

s

RSS vorteX

16

Case Study Example Location: West Africa

Problem

– Drill 12 ¼” Section in one run

– Reduce Shocks and Vibration

events on Downhole tools

– Improve average ROP.

Solution is PowerDrive vorteX*

system

– Decoupled Bit induced S&V

and provide high Bit RPM to

overcome Stick slips. 0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

A B C D

Av Overall ROP Av Overburden ROP top1 Avg ROP top2 Avg ROP No of RUNs

12.25in hole section ROP comparisom

ABC (PDX5) 3 wells ROP vs D ( PD Vortex )well ROP comparisom

Case study - PowerDrive vorteX ROP

0

2

4

6

8

10

12

14

16

well-1 PowerV well-2 PowerV well-3 PowerV well-4 PowerVVortex

well-5 PowerVVortex

ROP Drilling Time X 10 MPCH

8 1/2in ROP comparison on PowerV vorteX and PowerV

RO

P (

m/h

r)

well

ROP improved by about 30%

Directional response remained

the same for both assembly.

Case Study - StickSlip reduction

18

VorteX assembly

Non-VorteX assembly

Improved performance and reliability

Accurate well placement Extended applications

Full rotation to eliminate sliding Reduced risk of differential sticking Enhanced drilling efficiency

High DLS requirements DLS assurance Openhole sidetrack

Harsh environment applications Minimal wellbore dependence Suitable for soft formations

Casing wear reduction

More power for a better ROP

Limited-capacity rigs applications

Automatic vertical control

PowerDrive*

RSS

Solution

Schlumberger RSS Solution suite

19

20

Thank You!