tecnologias mejoramiento de produccion

7/27/2019 Tecnologias Mejoramiento de Produccion

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High-Rate Fracturing –

Open Hole (Bridging Agent Diversion)

High-Rate Fracturing –

Open Hole (Bridging Agent Diversion)



Pinpoint StimulationPinpoint Stimulation



Horizontal Well StimulationHorizontal Well Stimulation

Loyd East

Product Manager

Pinpoint Stimulation



AgendaAgenda

Horizontal Well Fracturing Processes

• Processes for Open Hole Horizontals

• Processes for Uncemented Liners

• Processes for Cemented Liners



Openhole or Slotted Liner CompletionsOpenhole or Slotted Liner Completions

SurgiFrac®

• Acid Fracs

• Proppant Fracs

• ‘Skin’ Fracs

• Dynamic

Diversion

• HWO or CT



SurgiFrac®SurgiFrac®



SurgiFrac® ServiceSurgiFrac® Service



Hanifa HJAF CompletionHanifa HJAF Completion

0

1000

2000

3000

4000

5000

6000

0 100 200 300 400 500 600 700 800 900 1000

Days of Production

0

2000

4000

6000

8000

10000

12000

14000

16000

18000Water BWPD

Oil Rate BOPD

WHP psi

Gas MSCPD

Oil Rate, bopd



Results SummaryResults Summary

• SurgiFrac increases the well productivity in more than 600%.

Oil production rate increased from 500 BOPD to 3,000 BOPD

using the same choke size for comparison purposes.• Permanent Gauge Information showed that the Productivity

Index “PI” from the well increased from 1.15 to 10.4 as a result

of the SurgiFrac process.

• SurgiFrac process permits the outstanding selective

stimulation of the horizontal well in 10 points without showing

stress interference.

• The well produces 5,400 BOPD with 80/64” choke size



Offshore SurgiFracOffshore SurgiFrac



SurgiFrac Brazil – New Deepwater WellSurgiFrac Brazil – New Deepwater Well

Recently completed the first treatment on a deepwater well for Petrobras in the Campos Basin, offshoreBrazil.

Petrobras comments:“ A global first - a stimulation job using the SurgiFrac

technique has just been completed from a floating

unit. This technique allowed for multiple fractures ina subsea, uncemented horizontal wellbore. Theapplication of this technology is expected toincrease the Recovery Factor of oil from thecarbonates in the Campos Basin …. It can now beconsidered that this technology is now available for application in whichever working environment –land, fixed platform and subsea.”General Engineering Manager

SPE 90056

®



Delta Stim® Completion ServiceDelta Stim® Completion Service

• Delta Stim® sleeves

• Swellpacker™ Isolation Systems

• Acid Soluble Cement

• VersaFlex® Liner Hanger System



Delta Stim® Completion ServiceDelta Stim® Completion Service

Pneumatic Ball Dropper

®M h i l Shift D lt Sti ® Sl



Mechanical Shift Delta Stim® SleeveMechanical Shift Delta Stim® Sleeve

MS D lt Sti ® Sl Cl d OMS Delta Stim® Sleeve Close and Open



MS Delta Stim® Sleeve Close and OpenMS Delta Stim® Sleeve Close and Open



Swellpacker TM

Isolation System

Swellpacker TM

Isolation System

SwellpackerTM Isolation System



SwellpackerTM Isolation System

Rubberbonded to pipe End rings

Standardoilfield tubular

• Forms part of completion string

• Does not require service tools• Swells to fill washouts

E ti t d/C l t d ∆P



Estimated/Correlated ∆P

0

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

8.4 8.6 8.8 9 9.2 9.4 9.6 9.8 10 10.2 10.4 10.6 10.8

Hole ID [in]

D i f f e r e n t i a l p r e s s u r e [ b a r ]

0

725

1450

2175

2900

3625

4350

5075

5800

6525

7250

7975

8700

9425

10150

10875

D i f f e r e n t i a l p

r e s s u r e [ p s i ]

4.5inx8.15inx9m Sw ellpacker

5.5inx8.15inx9m Sw ellpacker

6.625inx8.15inx9m Sw ellpacker 7inx8.15inx9m Sw ellpacker

4.5″

5.5″

6.625″

7″

8.15″

The Swellpacker™ Lite Tool



The Swellpacker Lite Tool

Swelling Element• 20 mm or greater thickness

Element Length• 1 meter (3.3 ft)• Full Internal & external seal

End Rings• aids deployment• elastomer support

SwellpackerTM Lite tool

• Slip on design

• 1,000 psi rated• Standard API casing sizes

• Custom sizes available

• Installed at wellsite or pipeyard



VersaFlex® Liner Hanger SystemVersaFlex® Liner Hanger System

• No moving parts

• Eliminates pre-set risk• Reduction in leak

paths• Superior annular seal

• Simplified design

• Simplified procedures

Advantages of Expandable Liner HangersAdvantages of Expandable Liner Hangers



Advantages of Expandable Liner HangersAdvantages of Expandable Liner Hangers

•Simplicity•Single redundant sealing area

◊Robust gas tight seal•No slips – no setting issues

◊No tortuous fluid flow paths◊No pre-set risk◊No place for well debris◊No tool release issues

◊Sets in any casing hardness◊Will not damage parent casing

•Improved cementing jobs◊Rotation and reciprocation

◊No liner top squeeze◊No liner shoe squeeze

Conventional

Liner Hanger

VersaFlex®

Liner Hanger



InterventionlessDelta Stim ® Completion

System

InterventionlessDelta Stim ® Completion

System

Tracer Log after using Delta Stim® CompletionTracer Log after using Delta Stim® Completion



SystemSystem

4-1/2” Delta Stim Completion utilizing Delta Stim Lites & Swellpacker Lites

• Horizontal Well

• Frac through 2.56” Baffle @

5733 ft

• Upper Swellpacker @ 5561 ft

• Lower Swellpacker @ 5875 ft

• 253,053 lbs of 40/70 premiumwhite sand

• Avg pump rate 92 bpm

• Avg pressure 6,650 psi

• Tracer – Sc-46 Zero Wash



Cased/Cemented CompletionsCased/Cemented Completions



Cased/Cemented CompletionsCased/Cemented Completions

Conductivity with Flow ConvergenceConductivity with Flow Convergence




50 ft Perfs 0.5 ft Perfs

100 ft Frac – Fcd = 10

Two Cases:

-No Damage

-6 ft NW (Fcd = 1)

100 ft Frac – Fcd = 10

Three Cases:

-No Damage

-6 ft NW (Fcd = 1)

-6 ft NW (Fcd = 500)





Cumulative Production

-600000

-500000

-400000

-300000

-200000

-100000

0

0 50 100 150 200 250 300 350 400

Time, Days

C

u m O

i l , B B l s

0.5 ft Perfs 50 ft Perfs 0.5 ft Perfs Packed 0.5 ft Perfs Damaged 50 ft Perfs Damaged



CobraMax H

CobraMax V



CobraMax

Wellhead

CobraMax BHACobraMax BHA



CobraMax BHA• Coiled Tubing Connector

• Sheer Disconnect

• Centralizer

• Jet Body

• 3/16” Jets

• Ball Cage

• Ceramic Ball

• Lower Ball Sub• Mule Shoe Collar

Fracturing RatesFracturing Rates



gg

Maximum Annulus Frac Rates for 1-3/4” Coil

3-1/2” Casing 11 bpm



7” Casing 55 bpm

Note – Requires a Dual Flow Cross at injection point on surface –

20 ft/sec Max Velocity from Inlets to prevent erosion of coil

Case History #1 South TexasCase History #1 South Texas



yy

• Perdido Sand

• 10,680’- 11,917’ (MD)

• 10,550’- 10,630’ (TVD)• 6 Distinct Frac Targets

• 35# Sirroco Frac System – 30 bpm

• 1,080,500 lbs 20/40 Ceramic Plus Proppant

• 504,500 lbs 20/40 RC Ceramic Plus Proppant

• 3-1/2” Liner – Unperforated• 1-3/4” Coiled Tubing

Case History #1 ResultsCase History #1 Results



yy

Hydra-Jet PerforatingHydra-Jet Perforating



y gy g



Schematic of Jet Stream in a Hydra-jettedPerforation TunnelSchematic of Jet Stream in a Hydra-jettedPerforation Tunnel



Perforation TunnelPerforation Tunnel

Jet Stream Divergence and Full Returns

10 “

Schematic of Jet Stream in a Hydra-jettedPerforation Tunnel with Induced FractureSchematic of Jet Stream in a Hydra-jettedPerforation Tunnel with Induced Fracture



Perforation Tunnel with Induced FracturePerforation Tunnel with Induced Fracture

6 ft



SummarySummary



• Openhole Horizontals – SurgiFrac• Sliding Sleeve Completion – DeltaStim Sleeves

and Swell Packers

• Cased/Cemented Horizontals – CobraMax H

• Moderate to High Perm Reservoirs require

Highest Near-Wellbore Conductivity possible• Low Risk, Aggressive Proppant Treatments

made efficient with Coiled Tubing methods

• Hydra-jet Perforating can stimulate passed

damage while perforating in high perm rock

Fracture Placement OptionsFracture Placement Options



• Hydra-Jet Perforating (HP)

• Dynamic Diversion – Hydra-jet Assisted

Fracturing (HJAF)• Swell Packer Diversion

• Proppant Plug Diversion (HP) + Annular Fracturing

• Ball Activated Sliding Sleeves• Mechanical Shifted Sleeves

Ball Drop Delta Stim® SleeveBall Drop Delta Stim® Sleeve



Delta Stim® Lite SleeveDelta Stim® Lite Sleeve



FlexibilityFlexibility



ForceForce

Time (days)

0

10

20

30

40

10 20 30 40 50

A new approach

to materials

– Rubber swells inhydrocarbons

– Activates in oil but

not pure water

– Creates effective

seal in open hole – Swell time adaptable

to suit environment

Estimated/Correlated ∆P



• Manufactured to any pipe

diameter

• Slimmer pipe means thicker rubber

• More rubber means greater

swelling, for higher differential pressure

• Longer packer lengthincreases

differential pressure

capability• Swells to seal irregular

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