Microsoft Word spe114793. doc

System advantages
 
1.
The gun string can be run in the hole without 
primary explosives. 
2.
Using the trigger charge-firing head in high 
temperatures reduces the risk of premature 
firing is exposed to the primary explosive, as 
the detonation train is completed just prior to 
firing. Limiting the exposure of the 
detonator, increases the temperature rating of 
the whole system.
3.
Optional upshift gun release allows 
additional wireline perforations later in the 
life of the well without pulling the 
completion.
4.
Schlumberger 5-in hsd gun loaded with deep 
penetrator charges assures maximum 
productivity.
5.
A Schlumberger 5-in gun has fill proven low 
detonation shock.
6.
An optional shock absorber minimizes on 
impact on downhole pump. 
4. Field Applications 
Agiba Petroleum Company is one of the first 
Egyptian oil companies to apply the system of 
perforating underbalance with a sucker rod pump 
installation. This system has been applied for some 
wells at Meleiha, Aman and Northeast Meleiha 
fields. Figures 2 through 4 show comparisons 
between the production performance of wells 
perforated with TCP under balance technique and 
other wells perforated with conventional 
underbalance technique, when the compared wells 
producing from the same reservoir. 
The data represent six wells from three different oil 
fields is selected. These fields include Meleiha (M), 
Aman (A) and Northeast (NE). Two wells were 
chosen from the same field and producing from the 
same block with the same reservoir parameters. One 
of these two wells was perforated using the TCP 
system while the other one used conventional 
perforation system. The selected wells and their 
perforation systems are shown in Table 1 below: 

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SPE 114793 
5 
Table 1. list of wells in study.