The primary objective of any well drilled and completed is to produce Hydrocarbons; by loading the Hydrocarbon (i.e. Oil and Gas) contained within the well through a conduit of the well and start separating it with surface facilities depending on type and composition of the Hydrocarbon. Producing oil is simultaneously contained with problems depending on the type and properties of the reservoir. Furthermore, what makes the problems much more; is when oil and/or gas is produced from multi-zones at the same time, when accumulated problems from all the producer zones occurring at the same time. To help analyze this problems we are going to use PROSPER software package IPR multilayer, in which helps in identifying the relationship between Flow rate and Reservoir pressure.

1. Analyzing Multi-zone completion
using multilayer by IPR (PROSPER)
Prepared By:
Arez Luqman
Supervisor:
Sarhad Ahmed

2. INTRODUCTION
Many reservoirs consist of multiple pay zones, producing hydrocarbons
from such reservoirs can be a serious challenge for engineers. Considering
the well design, drilling techniques, recovery techniques and etc..
IPR is technique to analyze multiple layer, multi zone reservoirs which is
the subject of our research.
To help analyze this problems we are going to use PROSPE software
package IPR multilayer, in which helps in identifying the relationship
between Flow rate and Reservoir pressure.
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3. OBJECTIVE
The Aim and objective of this study; is to analyze multi-
zone completion using Multilayer IPR within PROSPER
software package.
As well as to analyze an input data to show how to model
commingled production from multiple zones.
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4. Fluid Performance (IPR)
• The Inflow Performance Relationship (IPR) describes the behavior of the well’s flowing
pressure and production rate, which is an important graph in understanding the
reservoir/well behavior and quantifying the production rate.
• Productivity index (PI) is defined as the ratio between the flow rates of a well to the draw
dawn pressure drop with in the reservoir. Symbolized by with it is abbreviation of (PI).
The commonly used term (PI) represents one point on inflow performance curve. The PI
expressed in bbl/day/Psi
of total liquid (oil + water) as:
𝑃𝐼 = 𝐽 =
𝑄 𝑜+𝑄 𝑤
𝑃 𝑅−𝑃 𝑤𝑓
Where 𝑄𝑜 = 𝑜𝑖𝑙 𝑓𝑙𝑜𝑤 𝑟𝑎𝑡𝑒, 𝑞𝑤 = 𝑤𝑎𝑡𝑒𝑟 𝑓𝑙𝑜𝑤 𝑟𝑎𝑡𝑒,
𝑃 𝑅 =
𝑎𝑣𝑒𝑟𝑎𝑔𝑒 𝑠𝑡𝑎𝑡𝑖𝑐 𝑤𝑒𝑙𝑙 𝑏𝑜𝑟𝑒 𝑝𝑟𝑒𝑠𝑠𝑢𝑟𝑒,
𝑃 𝑤𝑓 =
𝑓𝑙𝑜𝑤𝑖𝑛𝑔 𝑤𝑒𝑙𝑙 𝑏𝑜𝑟𝑒 𝑝𝑟𝑒𝑠𝑠𝑢𝑟𝑒
4

5. IPR Predicting Correlations
Vogel’s Method
Standing’s Method
Fetkovich’s Method
Couto`s Method
Al Saadoon`s Method
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6. Fluid Performance (VLP)
• VLP is defined as the ratio between the tubing pressure intakes (PIN) versus the amount of flow rate
(q) at the surface
Reasons behind pressure decline:
• Vertical well
• Friction
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7. Multiphase-Phase Flow
• Single-phase liquid
• Bubble flow
• Mist flow
• Slug Flow
• Annular flow
Flow
Regimes
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8. COMPLETION
Terms of Completion
• to meet the requested targets of production/injection rates
• to choose the simplest layout from the possibilities available for a given level of functionality
• to meet the needs of safety and respect for the environment
• to provide enough flexibility for any changes during the working life of the well
Completion Effectiveness
• Greater production
• in terms of their effectiveness over time (less work over, simpler management)
Well completion is an upstream petroleum activity whose aim is to furnish the well, once it has been drilled and cased,
with all of the equipment needed to bring the hydrocarbons to the surface, both in the case of natural flow
Completion Engineering Aims:
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9. COMPLETION TYPES
Classification By Reservoir/Wellbore Interface
Classification By Mode Of Production
Classification By Completion Geometry
9

10. CLASSIFICATION BY RESERVOIR/WELLBORE INTERFACE 10
OPEN HOLE
COMPLETIONS
CASED HOLE
COMPLETIONS

11. OPEN-HOLE COMPLETION
Open-Hole
Completion
Advantages No perforating expense
Can be easily deepened and converted to a liner type completion.
With a gravel pack provides excellent sand control
Require minimum rig time on completion
there is no formation damage from cement
Full diameter of pay zone
The production casing set on top of production zone before
drilling the production formation that contains the
hydrocarbon fluids, and then after casing was cemented,
producing formation drilled .
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12. OPEN-HOLE COMPLETION
Limitations:
Gas and water production difficult to control
Selective critical section in production zone for
fracturing and acidizing more difficult
May require frequent well-bore clean out
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13. COMPLETION TYPES
• UNCEMENTED LINER COMPLETIONS
• CEMENTED LINER COMPLETIONS
• UNCEMENTED LINER COMPLETIONS
In some formations hydrocarbons exist in regions where the rock particles are
not bonded together and sand will move towards the well bore as well fluids
are produced. The use of an un-cemented liner (slotted or screened) acts as a
strainer stopping the flow of sand. Liners are hung off from the bottom of the
production casing
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14. COMPLETION TYPES
Various types of un-cemented liner are as follows:
• Slotted Pipe
• Wire Wrapped Screens
• External Gravel Pack
• Resin Injection
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15. COMPLETION TYPES
• PERFORATED CEMENTED LINER COMPLETIONS
In perforated cemented liner completions, the casing is set above the
intended productive interval, and the latter then drilled. A liner is cemented
in place which is subsequently punctured (perforated) by shaped explosive
charges
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16. COMPLETION TYPES
Advantages :
• Excessive gas and water production can be controlled more easily
• Adaptable to multiple completion techniques
• Can be easily deepened
• Will control most sand
Limitations :
• Cost of casing cement and perforating for long zones .
• Well productivity is less than productivity of open-hole completion .
• No adaptable to special drilling techniques to minimize formation damage .
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17. Cased-hole Completion 17
Advantages:
Excessive gas and water
production can be
controlled more easily
Adaptable to multiple
completion techniques
Can be easily deepened
Will control most sand
Limitations:
Cost of casing cement and
perforating for long zones.
Well productivity is less
than productivity of open-
hole completion .
No adaptable to special
drilling techniques to
minimize formation
damage .
the hole is drilled through the target formation(s) and production casing is run and cemented in the hole

18. CLASSIFICATION BY MODE OF PRODUCTION
NATURAL
FLOW
• When a hydrocarbon reservoir
can sustain flow due to its
natural pressure
ARTIFICIAL
LIFT
• Artificial lift methods are
necessary when a reservoir's
natural pressure is insufficient
to deliver liquids to surface
production facilities
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19. CLASSIFICATION BY COMPLETION GEOMETRY
High production rate
Corrosive well fluids
High pressures governmental policies
19
Single zone completion
Factors leading to selection of single zone completions :

20. SINGLE-ZONE COMPLETION
Probability of well completion for single zone depending on
objectives from well drilling ,and that include:
Well produce through production casing
Well produce through production casing and production tubing
Well produce through production tubing
Well produce by pumping
Gas lift well
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21. MULTIPLE-ZONE COMPLETION
• High producing
• Faster payout
Factors leading to selection of multiple completion :
• The requirements for well servicing/ work over operations become
more frequent .
• they are more complex and time consuming.
• there are many more potential leak paths than in a simple completion,
The main disadvantages of multiple zone completions are that:
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22. MULTIPLE-ZONE COMPLETION
Numerous
configuration are
possible utilized
single and multiple
string of tubing:
Single-well with alternate
completion
Dual completion single packer,
single tubing string
Cross-over dual completion–
single string
Dual completion-parallel string-
multiple packer
Triple completion
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23. WELL MODELING (PROSPER)
APPLICATIONS
OF PROSPER :
• Design and optimize the well completion
configuration including horizontal and
multilateral wells and tubing and pipelines
sizes
• Design and select the proper artificial lift
methods such as gas lift, hydraulic pump and
electrical submersible pump
• Generate IPR and VLP curves for use in
simulators such as Eclipse
• Calculate pressure losses in different locations
of well production system such as in wells,
flow lines and across chokes.
• Analyze the effect of component changes in
the production system such as tubing size,
perforation density and surface choke size in
the naturally flowing wells and GLR in the gas
lift wells .
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24. INPUT DATA 24

25. INPUT DATA 25

26. RESULT AND DISSCUSION
• The well produces 36 MMscf/d .
• The upper zone produce a little roughly (20MMscf/d )
whereas the lower zone produce (16 MMscf/d.)
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27. RESULT AND DISSCUSION
The gas produced by combine upper and lower completion are (36 MMscf /d ) and the upper
zone produced gas (20MMscf/d) while the lower zone produced gas (16 MMscf/d). There is no
crossflow certain under the condition . The average flow rate is (71.5 MMscf/d) that is a
combine upper and the lower layer completion (41 &30.5 MMscf/d) depend of the curve
inflow multilayer plot
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28. RESULT AND DISSCUSION 28

29. Reference
• Agip (1996) Well completion and workover course, Agip, 2v.
• SPE 114946, New Semi-Analytical Solutions for Multilayer Reservoirs
• VogelJ.V. (1968) Inflow performance relationships for solution gas drive wells, «Journal of Petroleum
Technology», January, 83-92
• Rabia, H., 2007. well Engineering & Construction. 1st ed. Tulsa : s.n.
• Carden, R. S. & Grace, R. D., 2007. HORIZONTAL ND DIRECTIONAL DRILING. 1st ed.
Tulsa,Oklahoma: PETROSKILLS, LLC. AN OGCI COMPANY.
• Ltd., P. E., 2010. PROSPER Manual. s.l.:s.n.
• Anderson R.O. (1984) Fundamentals of the petroleum industry, Norman (OK), University of Oklahoma
Press.
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