advanced hydraulic fracturing ziani
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7/23/2019 Advanced Hydraulic Fracturing Ziani
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Advanced Hydraulic Fracturing
Damien DESPAX
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WHY FRACTURE?
Fracturing Engineering Module 03
©
B J S e r v i c e s C o m p a n
y .
A l l r i g h t s r e s e r v e d .
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Design Goals: Formation Permeability
McGuire
&
Sikora
(1960)
type
representation of Permeability
Contrast vs Productivity Index
Increases
in
J/JO in
low
perm
reservoirs from increasing
fracture length.
Increases in J/JO in high perm
reservoirs
from
increasing
fracture
width.
©
B J S e r v i c e s C o m p a n
y .
A l l r i g h t s r e s e r v e d .
Why Fracture? 0509 Slide 2
Permeability Contrast (wkf
/k)
P I C o n t r a s t ( J / J O
)
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FRAC JOB
FLOWCHART
Fracturing Engineering Module 13 ©
B J S e r v i c e s C o m p a n
y .
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Objectives
Learn
all
the
stages
in
a
frac
job
from
data
acquisition to execution
Learn about the sources of data required to design a
frac
job
Understand the critical decision points during a frac
process
Frac Job Flowchart Slide 2
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. A l l r i g h t s r e s e r v e d .
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Obtain Well data:
Logs, DST’s, Mud Logs,
Production History
(if any), PVT Data,Completion Diagram,
Previous Treatments
Use Frac Model
Production
Simulator
History Match
Production Data
Establish Base
Case Production
Frac Job Flow Chart
Frac Job Flowchart Slide 3
© B J S e r v i c e s C o m p a n y
. A l l r i g h t s r e s e r v e d .
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Frac Job Flow Chart
Run Production
Simulation with Fracture
OptimumFracture
Geometry?
Yes
Design Treatment for Optimum Fracture Geometry
Using Fracture Simulator
No
Preliminary
Treatment
Schedule
SRT Schedule
Minifrac
Schedule
Input Speculative Fracture
Geometry into Production
Simulator
Frac Job Flowchart Slide 4
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. A l l r i g h t s r e s e r v e d .
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Rig Up
Mix Fluids
Pressure Test
Pre-Job Safety
Meeting
Pump Step Rate
Test (Step Up andStep Down)
Real TimeData Modeling
Mobilize Equipment,
Materials and
Personnel
Frac Job Flow Chart
Frac Job Flowchart Slide 5
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Analyze SRT
Data
Fracture Extension
Pressure, Near
Wellbore FrictionIs NWF
Significant?
Pump Minifrac
with Proppant Slugs
Yes
Pump
Minifrac
No
Pressure
Rise due to Prop.
Slugs?
Pump Proppant
Slugs as per
SPE 25892
Yes
Real Time
Data ModelingNo
Frac Job Flow Chart
Frac Job Flowchart Slide 6
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Frac Job Flow Chart
Pressure Match Simulator
Output to Minifrac Data
E, , Klc, Cl,ll, lll
Pnet, Pclosure, fracRe-Design
Treatment
Final Treatment
Design Load Proppant &
Additives. Mix Fluids
Pre-Job Safety
Meeting
Pump
Treatment
Real Time
Data Modeling
Frac Job Flowchart Slide 7
© B J S e r v i c e s C o m p a n y . A l l r i g h t s r e s e r v e d .