Wellbore Departure DPA Rio

7/30/2019 Wellbore Departure DPA Rio

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February 2011

Trackmaster PlusWellbore Departure SystemPresented by: Mario Breton.

Definition of sidetracking.

Why sidetracking?

Criteria for successful casing exits.

Well preparation.

Trackmaster plus components.

Running procedure.

Low side exits.

Open Hole systems.

Performance bulletins.

Engineering support.

Content


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Sidetracking is the practice of

milling an exit window from an

existing cased wellbore or

creating an alternate path around

a wellbore obstruction in an open

hole application, there are many

reasons to sidetrack but in most

cases are

What is sidetrack?

Irretrievable fish.

Collapsed casing.

Directional control.

Planned multilateral well

Increasing well productivity.

Why Sidetracking?


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Window Quality:

Sufficient window size for future operations.

Rat hole objective:

Sufficient length and trajectory.

First Trip Success:

Major driver of total cost to perform casing exit.

Milling time:

Secondary driver of casing exit cost

Criteria for successful casing exits

Dummy run, to ensure that any debris is removed or

push below the setting depth, check for excessive drag

or ID tight spots.

In a 9-5/8 casing dummy run assembly can be:

8-1/2 Bit.

9-5/8 casing scraper.

5-1/2 HWDP (15 joints)

DP to surface

(in bigger size whipstocks DCs should be run to simulate the

whipstock assembly stiffness).

Well preparation


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Test the MCBPV and MWD (if used).

The purpose of this test is to record MWD pulse and to verify that

the MCBPV is cycling.

BHA used: Kelly cock (closed), MCBPV, MWD, 2 3 stand of DP.

Start circulation at MCBPV closing rate; MWD pulses and pressure

readings must be recorded.

This procedure must be done for five times, until we get the valve

to the cycle where it closes, sharp pressure increase must benoticed when the valve closes.

Pressure test is recommended for 5 minutes holding 3000 psi.

Well preparation

Trackmaster Plus Components

Anchor

Whip

Mill

Circulation Valve

Running Tool

HWDP or Premium

Grade DP

All applications utilizing a hydraulic

expandable anchor required these basic

components.

*(Orienting tool placed above Circulation

Valve).


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Orientation with Gyro using

UBHO.

Allows pumping at a low flow rate

to the annulus for well control.

(HART analysis to determined

max flow rate.

Higher flow rate used to close thevalve and set the anchor.

Trackmaster High Flow Valve

Trackmaster Multi-Cycle Bypass Valve

NAMCBPV

Allows pulsing of drilling fluid so the whip can

be oriented with MWD.

It can be pumped five times moving the fluid to

the annulus.

On the sixth or final cycle, the tool will close,and the fluid will not be bypassed.

When the drill string is not pumped on, the tool

will remain open to the annulus allowing the pipe

to fill and equalize.


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Trackmaster Multi-Cycle Bypass Valve

Open position profile

moves valve when pump

pressure is applied.

Close position profile

does not allow tool to

advance.

Trackmaster flex joint

Same Drill Pipe of HWDP as in working string.

Helps to relieve the stress on the connections in

the whipstock BHA.

The flex joint should mimic the stiffness of the

directional assembly to follow.


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Running Tool

Tool is run directly above Trackmaster Mill for hydraulic setting of

the Anchor.

Piston acts as a barrier between drilling mud and the hydraulic oil in

the whipstock assembly to ensure the setting mechanism stays

clean.

3500 PSI required to ensure that the piston pushes the hydraulic oil

to set the hydraulic anchor.

After anchor setting the piston moves into a cavity to allow

circulation to the Trackmaster mill.

Fastrack Tri-Mill with TCI.

Fastrack Bi-Mill with TCI.

Fastrack Tri-Mill or Bi-Mill with

Hybrid head.

Hard Formation PDC Bi-Mill.

Trackmaster Plus Mills


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Lead mill

Full gauge mill.

Initiates cut out and mills the window further as

it slides down.

Drills the rat hole.

Follow mill

Full gauge mill.

Works in tandem with the lead mill in the full

gauge section.

Dress mill

Full gauge mill.

Dresses the window as the entire assembly

passes through the casing.


Mill Type Application

Fastrack Tri-Mill with TCI Up to 25000 PSI compressive strength, essentially good for soft to

medium formations.

Tri-Mill tends to drop angle of the whipstock.

Not Good for abrasive sands.

Dress mill helps to ensure window quality.Fastrack By-Mill with TCI Up to 25000 PSI compressive strength, essentially good for soft to

medium formations.

Bi-Mill tends to build angle of the whipstock.

Not Good for abrasive sands.

Dress mill helps to ensure window quality.

Recommended options when milling two casing strings.


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Mill Type Application

Fastrack tri-Mill or

By-Mill with Hybrid head

PDC inserts on the tip of the mill, TCI on the taper and gauge section.

Suitable in Hard Formations.

Dress mill helps to ensure window quality.

Fastrack Hard formation

By-Mill

Mill shape resembles a PDC bit.

Suitable for hard and abrasive formations.

Harder casing grades.


Whipstock assembly

Mid-Ramp

Mechanically pushes mill across center

Reduces center point coring

Fast Cut Out Ramp

Cradles mill for runningin hole

Initiates cut out

Aggressive

departure

angle

Gauge Section

Elongates full gauge window

Optional hook slot for retrieval

Hook Slot


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Whipstock assembly

Whipstock assembly


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Whipstock assembly

Window shape


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Trackmaster plus hinge pin

Each anchor system regardless of type can be connected to the

whipstock using the Hinge pin connection, this tool allows the

whipstock assembly to swivel and move allowing for flexibility

when tripping in hole.

Anchor technology

Expandable Anchor:

Hydraulic actuation.

Proven in cased hole and open hole applications.

Less rig time does not required tripping mechanism (i.e. Bridge plug

or cement top).

Spans multiple casing sizes.

Fully retrievable, built in shearing mechanism allows for recovery of

complete whipstock assembly (whip + Anchor) in one trip.

Size OD (in) Torque (lbs-ft) Overpull (lbf)

4-1/2 x 7 3.69 6000 50000

7 x 9-5/8 5.62 20000 65000

9-5/8 x 13-3/8 8.00 30000 95000

13-3/8 x 20 11.75 50000 114000


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Anchor technology

Cost effective and reliable.

Weight set anchor.

Shear pin trigger release mechanism.

Fully retrievable.

Simple set down weight on tripping mechanism to actuate

anchor ( 3600 lbs of set down weight).

Not recommended in highly deviated wells.

Fully retrievable, built in shearing mechanism allows for recovery

of complete whipstock assembly (whip + Anchor) in one trip.

Anchor technology

Hydraulically set in a single trip.

Provides isolation from the lower wellbore using an integral

packer.

Holds up to 5000 psi in both directions.

3000 psi to insure complete installation.

Size (In) Max T

(F)

Torque (lbs-ft) Overpull (lbf)

4-1/2 400 4500 26 29 klbs

5 (11.5 18 #/ft csg) 400 4500 26 29 klbs

5 (21.4 24.1 #/ft csg) 400 4500 26 29 klbs

5-1/2 400 6500 45 klbs

7 400 15000 63 65 klbs

9-5/8 400 40000 95 klbs


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Recovery Accessories

Debris barrier:

Ribbed surface catches debris that may fall to the anchor.

Should be used when anchor retrieval is planned.

Hook retrieval tool:

Orient hook tang to whip hook slot with gyro or MWD.

Easy to engage and disengage.

High Overpull strength.

If not possible to recover the whipstock assembly without

exceeding the hook maximum load release it and TIH with aDie collar assembly.

Typical BHA: Retrieval tool, full gauge stabilizer, joint of

drill pipe, surveying equipment, HWDP, DP.

Recovery Accessories

Die collar assembly retrieval tool:

Cut lip guide designed to lift the whip off the casing wall.

Tapered wickers are deep for strong engagement.

Withstand higher stresses than the hook retrieval tool.

Typical BHA: Retrieval tool, Full gauge stabilizer, Bumper sub, fishing

jar, full gauge stabilizer, HWDP, DP.

*bleed jars prior to pulling, a low jarring load may be necessary should

it not release at the Overpull value.


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Running procedure

Running procedure

Running in hole

TIH slowly at 3 minutes per stand,

monitor drag.

No circulation allowed while TIH with

whipstock.

The BPV (high flow or MCBPV) allows

filling up of the string.


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Running procedure

Orienting whip face

At required setting depth, free string

from torque by moving the string up and

down.

Orient whip face to required azimuth,

(verify there is no reactive torque

trapped in the string).

Whipstock should be oriented 0 90

degrees to the right or left of high side. (if

orientation required is to the right or left

of the low side tool modifications must

be done).

In high angle holes it is recommended

to stay 20 40 degrees to the left or

right of the high side (this to facilitate

retrieving process).

Running procedure

Setting the anchor

Verify whipstock is located 3 6 ft above

casing collar.

Circulate as necessary to cycle and close

the NAMBPV and increase pressure to 3500

PSI to set the anchor.

Maintain pressure inside the string for 5

minutes.

Pressure decrease will be notice once

anchor is set.

Verify trackmaster assembly is set by pulling

and slacking 15 klbs.


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Running procedure

Shearing the bolt

Pull and slack off half of the shearing value

to fatigue the bolt, maintain weight one

minute each time, maintain 3000 PSI.

pull or compress slowly to bolt shear value.

At the rupture there is a pressure drop

observed since the hose brakes as well.

Running procedure

Initial cut out

Pick up mill 2 to 3 ft above top of the

whipstock and rotate slowly to record

initial parameters and break plugs on

mill.

Lower mill slowly until contact withwhipstock is achieved, start milling with

low weight on mill (1000 2000 lbs).

WOM and RPM, are adjusted as per well

conditions.


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Running procedure

Running procedure

Mid Ramp

If torque and ROP decreases, increment WOB

and reduce RPM to produce a buckling effect that

will help the mill to walk away.

Special attention to prevent coring out of the mill.


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Running procedure

Drilling Rat hole

After milling the complete window length

proceed with rat hole.

Pass several times through the window until

the bottom of the rat hole to clean the hole and

to eliminate any protruding material in the

window.

Move the string up and down without rotationto verify if there is any excessive drag.

Running procedure


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Equivalent slide angle

System: 9-5/8 Trackmaster plus

uncemented Low side exit.

Client: North Sea Operator.

Location: UK North Sea Platform.

Dates: July, September, October 2009,January 2010

Low Side Exits


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Typical job summary (sample of 4 jobs)

9-5/8 trackmaster Plus Whipstock Single trip uncemented low side

exits.

Run scraper, surface test MWD & MCBPV.

Orient whip to 180 deg R/L OHS and set anchor.

Typical Summary of parameters:

ROP = 3.67 m/hr, WOM = 1-4 klbs, Average Torque = 10 kft/lbs, RPM = 80 120,

Top of window = 2000 mts, Bottom of window = 2000, Rat Hole length= 25 mts.

At TD ream window with 60 RPM, and verify for excessive drag, circulate bottomsup, pump slug, POOH.

Mills within tolerance, no issues when running subsequent BHA.

Low Side Exits

Low Side Exits


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A unique, workshop pre-installed modification allows the TrackmasterPlus System to achieve successful low side exits.

The modification allows an upward force (c. 2000 lbs on a 9-5/8

whipstock) to be exerted at the tip of the whip, overcoming

gravitational forces.

This upward force does not come into effect until the anchor is set,

ensuring that the whipstock remains flexible to deal with any wellbore

tortuosity whilst running in hole.

Low Side Exits

Low Side Exits


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Open hole system with a

shear sub.

Open hole system with a

Fastrack mill.

Open Hole Bit to Whip

system.

Open Hole systems

Open Hole system (two trips system)

Shear off sub allows transition of fluid to set

hydraulic anchor.

Tri cone bit is utilized to slide off the

whipstock and drill ahead.

Allows the whipstock to be rotated throughtight spots as the shear off isolates the shear

bolt from axial and torsion loads.


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Open Hole system (one trip system)

48

HWDP

MWD or Gyro

MCBPV

Running Tool

TrackMaster Plus Bi-Mill

TrackMaster PlusWhipstock

TrackMaster Plus Expandable Anchor

Extension (Optional)

Open Hole system (Bit to whip system)


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Unique design to allow attachment of smith roller conebit to whip.

Roller cone bit is run with the whipstock assembly to

bottom setting depth and sheared after setting the

anchor.

Utilizes patented Lock Up Pathfinder PDM for

sidetracking and directional drilling.

Modified roller cone bit is used for mechanical

attachment to whipstock.

Hydraulic continuity is maintained through the bit using

a burst-disc system.


Hydraulic conduit goes through the bit for

setting the anchor.

Burst disc isolates the fluid from annulus and

holds pressure for setting the anchor.

When the bit is sheared from the whipstock,

control line breaks free from the bit leaving an

open hydraulic path of 1/16.

When the burst disc ruptures, fluid can exit

through jets.

Bit is ready to drill.


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Bit to Whip system

Burst Disc

Burst Disc Manifold

Hole Hydraulic Conduit to whip



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Patented design feature on PDM.

Motor is locked while running in hole.

Motor unlocks after setting the anchor,

and bit is sheared off the whip.

6-3/4, 7/8 configuration, 5 stage PDM.

Adjustable bend angle: 1.15, 1.5, 1.8, 2.1

Flow rate: 300 to 600 GPM.

Torque: 6900 ft-lbs.



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Catoosa Field Test

Conducted in July 2010.

TCI Roller cone bit used.

9-5/8 whipstock.

Anchor set at 2800 PSI, break bolt sheared off at 45000 lbs.

Ruptured burst disc at 4500 PSI.

6-3/4 7/8 Lock up motor with a 2.25 deg bend angle. After setting the whip the bit drilled 290 at 35ft/hr.



Dull Bit was graded as

1-1-WT-A-EEE-X-NO-TDShear screws on the bit collar

sheared off cleanly


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Engineering Support

WhipSim:

Proprietary software that models:

Window shape and dimensions.

Amount of steel milled.

Dog leg of the assembly run through the window and related bending stress.

HART:

Proprietary software that models:

Hydraulic requirements for the operation (pump rate required to cycle the

bypass valve, pump rate required to ensure hole cleaning).

Runner (Torque and drag):

Proprietary software that models: Friction losses during the shearing process.

Free torque of BHA being used.

DRS:

Database that contains information about sidetracking operation performed

worldwide

Performance Bulletins


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THANK YOU

Documents

Wellbore Departure DPA Rio