Nitrified Acid over balance TCP
perforation in Carbonate
Formation is really beneficial for
Long Production Performance and
Negative Skin Reservoir
December, 4th 2013
Prepared by:Hanaey Ibrahim (GHOF), Khaled Abdul Azeim, Hany Dandarawy
(BURAPETCO), Khaled Shell (Halliburton)
Negative Skin Reservoir
MENAPS 13-13
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– Second level
• Third level
– Fourth level
Why??????
Safety
OperationsLoyalty– Fourth level
» Fifth level
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Operations
DecisionSuccess
Loyalty
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– Second level
• Third level
– Fourth level
Agenda
Objective
Background
Challenges– Fourth level
» Fifth level
12/7/2013 33MENAPS 13-13
Design
Operations
Findings
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– Second level
• Third level
– Fourth level
Objective
• Test A/R “G” Dolomite formation.
• Provide the optimum solution to avoid
perforation damage effect (Sp).– Fourth level
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• Produce well and achieve best possible
production rate.
4MENAPS 13-13
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– Second level
• Third level
– Fourth level
Background
• Well # 2has been drilled in January 1995.
• Deep Formation “Alamein Dolomite” was
tested formation water.
• The well was abandoned by 3 EZSV and 2
cement plugs.– Fourth level
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cement plugs.
MENAPS 13-13
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– Second level
• Third level
– Fourth level
Challenges
• Time Frame Test:– 40 days only before concession release.
– Contracting, programming, implementation.
• Resources:– 6 technical employees.
– Part time staff.– Fourth level
» Fifth level
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– Part time staff.
– Contracted company.
• Data and Information:– Correlation using near by fields.
– Review history of the existing wells.
– Risk
6MENAPS 13-13
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– Second level
• Third level
– Fourth level
Optimum Perforating Design
• Perforate 4 intervals of 119 ft gross with 66 ft net of A/R “G” Dolomite zones in underbalanced condition.
• Install Hydraulic Firing Head as back up to the mechanical one.
– Fourth level
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mechanical one.
• Select deep penetration gun due to unknown damage radius data. 4 5/8”, 6 SPF, 32 gm, TCP, STU.
• Shot and drop was selected to avoid killing.
MENAPS 13-13
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– Second level
• Third level
– Fourth level
Operations Sequence - Well-2
• RIH with TCP. Set Packer, drop detonating bar.
• SOP had been applied (fish the bar, check Till tale).– Fourth level
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12/7/2013 8MENAPS 13-13
8
• RIH to drop gun 3 times.
• RIH with CTU, circulate and pump acid.
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– Second level
• Third level
– Fourth level
Acid Injection
2500
3000
3500
4000
4500
Well # 2 Injection Pressure
Pu
mp
ing
Pre
ssu
re (
psi
)
– Fourth level
» Fifth level
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0
500
1000
1500
2000
0:4
5
0:4
6
0:4
7
0:4
8
0:4
9
0:5
0
0:5
1
0:5
2
0:5
3
0:5
4
0:5
5
0:5
6
0:5
7
0:5
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0:5
9
1:0
0
1:0
1
1:0
2
1:0
3
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4
1:0
5
1:0
6
1:0
7
1:0
8
Pu
mp
ing
Pre
ssu
re (
psi
)
Time (min)
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– Second level
• Third level
– Fourth level
Production Test Result
Production Choke Prod. Rate BFPD WHP Time HRS
½” 766 110 6
1” 982 104 6
1 ½” 1200 102 6
2” 1460 98 6– Fourth level
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2” 1460 98 6
• PBU was carried out after the multi rate test and showed:
• Reservoir Pressure = 3252 psi
• Productivity Index = 2.47 BPD/psi
• Permeability = 65 md
• Skin = -3.5
MENAPS 13-13
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– Second level
• Third level
– Fourth level
Results – Reservoir Pressure Performance
3200
3250
3300
3350
3400
Reservoir Pressure
– Fourth level
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3050
3100
3150
3200
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– Second level
• Third level
– Fourth level
Summary
• Challenges does not mean end of your conventional
believe.
• Money is not the vital against technical.
• Right decision on spot is rarely available nowadays.
• Nitrified acid is very useful in carbonates along with – Fourth level
» Fifth level
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• Nitrified acid is very useful in carbonates along with
perforation.
• Perforation with acid comes SOP for A/R “G” dolomite
in BURAPETCO operations.
MENAPS 13-1
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– Second level
• Third level
– Fourth level
Acknowledge
This presentation is to the
sole of the owner of the
Egyptian local exploration – Fourth level
» Fifth level
12/7/2013 1313
Egyptian local exploration
company.
MENAPS 13-16
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– Second level
• Third level
– Fourth level Thank You
Questions?
– Fourth level
» Fifth level
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Thank You
MENAPS 13-16
