WELCOME TO DRILLING TECHNICAL FORUM

An Overview of RSS & LWD

Services kick started in

FHQ Oil India Limited

Drilling Deviation Section

• WHAT IS RSS?

• WHAT RSS SERVICE IS WITH US?WHAT

• WHY SHOULD WE HAVE RSS?WHY

• HOW CAN RSS BE HELPFUL TO US?HOW

WHAT IS RSS?

• Rss-Rotary steerable system uses continuous rotary motion to drill ahead and hold/achieve direction.

• Push the Bit or Point the Bit.

• No sliding

WHAT WE HAVE?

• RSS – GEO-PILOT

• SERVICE PROVIDER: HALLIBURTON

• TYPE: POINT THE BIT SYSTEM RSS-GEOPILOT

INSIDE RSS

DRIVE SHAFT

PIZZA CUTTERROTARY SECTION At Bit Inclination

& At Bit Gamma(1.26M)

RSS FLOW CYCLE

MWD SURFACE UNIT

GEO SPAN

CREATES NEGATIVE PULSE

RSS READS COMMAND EXECUTE &

RESPOND BACK

MUD PULSE

CABLES

MUD PULSES CAPTURED BY TRANDUCERS

INSIDE GEOSPAN

INLET PORTOUTLET PORT ACTUATOR VALVE

INSIDE GEO SPAN• INLET PORT CONNECTED TO “H” MANIFOLD

•OUTLET PORT DIRECTED TO MUD NALLAH

•CONNECTED TO MWD UNIT VIA CABLES

•DURING DOWNLINKING, CREATES NEGATIVE PRESSURE PULSE (VIA ACTUATOR VALVE).

• RSS SENSE THE NEGATIVE PULSE AND EXECUTES COMMAND

DIRECTIONAL DRILLER CONSOLE

LWD TOOLSNUKE•NEUTRON POROSITY•DENSITY POROSITY

RLL•RESISTIVITY•GAMMA•APWD

DM•INCLINATION•DIRECTION

RADIO ACTIVE SOURCE

TWO TYPES OF RADIO ACTIVE SOURCE LOADED1. For Density tool -Cs-1372. For Neutron Porosity tool-

Americium241 Berilliyum

Acoustic PingerSource port

Acoustic PingerSource Port

Far Detector Near Detector

Source Window

MAJOR ADVANTAGES OF PRESENT RSS WITH LWD SERVICES

• Real time monitoring of ABI (At bit inclination) & ABG (At bit gamma) (just 1.26m from bit)

• Real time monitoring of ECD (Equivalent circulating density) & Annular pressure. Better understanding of hole condition.

• More accurate LOT/PIT value

• Swift gathering of logs before formation contamination (Before Drill fluid ingress)

• Real time log gathering will lead to Dynamic steering of the well in future.

LWD SERVICES WITH RSS

REAL TIME MONITORING

WHY RSS?

BETTER CUTTING LIFTING

LESS ANNULUS LOADING BETTER ROP

BETTER HOLE PROFILE

LESS DOGLEG/BETTER STEERABILITY LESS TORQUE & DRAG

CONTINUOUS ROTARY

NO SLIDING LESS CHANCES OF STUCK

HOW CAN RSS BE HELPFUL?

• NO SLIDING..LESSER DOWNHOLE PROBLEMS

• PDC BITS CAN BE USED WITHOUT STEERABILITY USE.

• INCREASE IN ROP.

• ONE BIT ONE SECTION.(Optimising LWD data recording)

RSS..Enhancing our performance

Loc: MFR Loc: NLL

RSS ran with Baker PDC bit at depth 4068m.

(Lithology:Shale)

(Inclination: Around 19degree)

SDMM ran with Baker KYMERA bit at depth

3727m.

(Lithology: Shale)

(Inclination: Around 19 degree)

Achieved Avg.ROP of 13-14m/hr.Achieved Avg. ROP of

6-7m/hr.

Much smoother hole profileLess smoother in comparison to RSS

Location: MFR (Profile)

Section View(Inclination)

Top View(Direction)

Actual (Red) Vs Planned (Blue)

Challenging Well with Deep kick Off at 3150m.

STEERABILITY ISSUES:•Severe right walking tendency•Dropping trend•Drilling through ShaleCURRENT DEPTH:4591m

TARGET DEPTH (MD):5055m

OBSERVATIONS FOR USING RSS IN IN-HOUSE RIGS

• Communication lines to be installed between MWD cabin & Driller for prompt

communication during Downlinking.

• Demarcation and safe keeping of RA.

•Since Hydra not present in In-house rigs, multiple handling by crane is needed.

•3 nos of 1502 connections at “H”-Manifold. (1 no-Geo Span, 02 nos –Tranducers)

•Availability of space for Programming of all tools together.

THANK YOU ALL FOR YOUR VALUABLE TIME