application of multi-segmented well model
DESCRIPTION
Demo Project Using Petrel RE 2014TRANSCRIPT
![Page 1: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/1.jpg)
APPLICATION OF MULTI-SEGMENTED WELL MODULE IN HORIZONTAL WELL
Elisabeth Maria WawolumayaReservoir EngineerSoftware Integrated Solutions
![Page 2: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/2.jpg)
Objectives To deliver the concept and effect of Multi-segmented Well model in horizontal well
compared to Standard Well Model.
Background Horizontal wells provide significant benefits and are becoming a preferred option in
many cases. Several types of well models in ECLIPSE (e.g: Standard Well, Multi-segmented
Well) Concerns about the loss of productivity in horizontal well due to water coning.
1
![Page 3: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/3.jpg)
Outline
2
![Page 4: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/4.jpg)
INTRODUCTION TO ECLIPSE WELL MODEL
![Page 5: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/5.jpg)
What is a well model?
The flow in the wellbore itself is modeled in two stages:1)Well connections to Reference depth2)Reference depth to Surface – VFP table
BHP @ Ref. depth
Pwh @ Surface
Grid block to grid block
Grid block to well connection
Well connection to reference depth
Reference depth to surface Well model
3
Fluid Traveling from Reservoir to Surface
1
22
Pressure at reference depth is calculated to satisfy the well constraints (prod rate target)
![Page 6: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/6.jpg)
ECLIPSE Well Models
Well connections to Reference depth (BHP)
4
1
22
Reference depth (BHP) to Surface
1 22
![Page 7: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/7.jpg)
Flow Equations
qp,1
qp,2
qp,n
qp,tot
Total flow at surface = sum of flows at each connection:qp,tot = qp,1 + qp,2 + … + qp,n
SrrB
pppkhkq
woipip
ibhpipirpip
/ln
2
,,
,,,
ibhpioipiip pppMTq ,,,
TransmissibilityTransmissibility MobilityMobility Pressure DropPressure Drop
5
SrrKhc
Two
j
/ln
igig
irgig B
kM
,,
,,
3 solution variablesPBHP, Fwater, Fgas
PotentialDifferencePotentialDifference
![Page 8: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/8.jpg)
Pressure Drop
In standard well model, phydr >>> pfrict & pacc
ptot = phyd = gh
ptot = pfriction + pacceleration + phydrostatic
Hydrostaticcorrectionfrom BHPdatum toconnection
Cell to w
ell
drawdown
Frictional pressure drop andAcceleration pressure drop
Pthp at Tubing
HeadPump or
compressor
Hydrostaticcorrectionfrom BHPdatum toVFP datum
Well connections to Reference depth
ibhpioipiip pppMTq ,,,
Reference depth to Surface (VFP table)
BHP ref. depth
6
![Page 9: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/9.jpg)
?
ptot = phyd = ghphydr >>> pfrict & pacc
7
Horizontal wells often have frictional pressure loss
![Page 10: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/10.jpg)
Multi-segmented Well Model Specifically designed for horizontal and multilateral wells. Detailed description of fluid flow Dividing wellbore into a number of segments Each segment has its own set of independent variables to describe the local fluid
conditions.
8
![Page 11: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/11.jpg)
MSW Application: Horizontal Well
PP
PPtoetoe
PPheelheelPP
PPrr
PP
PPrrPP
PPrr
AccelerationAccelerationFrictionFriction
f Fanning friction factorL lengthD Tubing IDρ fluid densityv fluid velocity
C unit conversion constantw mass flow rate of the fluid mixture through the segmentedA segmenteds area of cross-section for flow
9
HydrostaticHydrostatic
![Page 12: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/12.jpg)
PETREL DEMO PROJECT
![Page 13: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/13.jpg)
1. Model Description
Phase: Dry gas & Water Porosity = 0.25 High permeability (x, y, z direction) = 3,000 mD Perforation Length (horizontal section) = 2,000 m
GWC
10
Fine Gridi, j increment = 50 mk increment = 10 m
X max = 10,000 mY max = 10,000 mThickness = 1,000 m
Fine Gridi, j increment = 50 mk increment = 10 m
X max = 10,000 mY max = 10,000 mThickness = 1,000 m
![Page 14: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/14.jpg)
2. Completion Design & Development Strategy
11
The well is completed in 21 grid blocks (2 km length)
Well production controlGas rate target = 5E8 sm3/dayBHP limit = 10 bar
![Page 15: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/15.jpg)
3. Defining MSW
1 2
3Phase slip√ Drift Flux Model
Allows slip between phases
□ Homogenous flow model
All phases flow with the same velocity
Segment up to- Default top connection / device
in the well- Above the top segment VFP
table- BHP reference depth
Segment per cellEnsures each fluid entry to perforations is modeled separately.
12
![Page 16: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/16.jpg)
Segment numeration
Segment up to
14
BHPreference depth
SegmentNumber
BranchNumber
![Page 17: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/17.jpg)
4. Inserting segmentation set to the simulation model
15
![Page 18: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/18.jpg)
SIMULATION RESULTS
![Page 19: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/19.jpg)
Results (Fine Grid, High K)
Standard Well
MSW
16
Gas Rate Target = 500MM sm3/d
![Page 20: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/20.jpg)
BHP Limit = 10 bar
17
Standard Well
MSW
Reservoir grid block pressureBottom hole pressure
![Page 21: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/21.jpg)
Total Pressure Drop Pfrict + Pacc + Phydr
segmented No. 2
18
Pfrict
Pacc
Phydr
segmented No. 3 - 21
![Page 22: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/22.jpg)
Year 2014 – 2019 (Standard Well case)
19
![Page 23: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/23.jpg)
Year 2014 – 2019 (MSW case)
20
![Page 24: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/24.jpg)
Summary
21
Multi-segmented Well Model will optimize flow profile along the well bore, especially in horizontal and also multilateral well.
![Page 25: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/25.jpg)
Values
22
![Page 26: Application of Multi-segmented Well Model](https://reader036.vdocument.in/reader036/viewer/2022062420/563db977550346aa9a9d9f8b/html5/thumbnails/26.jpg)
THANK YOU