Upload
vukien
View
222
Download
3
Embed Size (px)
Citation preview
DON’T MISS OUT ONIMPROVED PERFORATION!Shaped charges from DYNAenergetics
Provably superior performancein shaped chargesWhatever your shaped charge requirements, DYNAenergetics has the right product to
meet your needs. Each and every charge satisfies the highest quality standards to ensure
the best possible perforation performance. DYNAenergetics manufactures deep-penetrat-
ing (DP), good hole (GH), big hole (BH), exposed through tubing and reactive liner (DPEX)
shaped charges in one of the world’s most modern automated plants where product
quality is monitored by a team of specialist engineers. For further information see our
Charge Performance Summary, which can be downloaded from our website:
www.dynawell.de/products_shaped_charges.html
SUPERIOR IN HOLE SIZEAND FLOW PERFORMANCE
Since the late 1990s DYNAenergetics has been researching into reactive liners for shaped charges. The aim was
to develop a new DPEX shaped charge reactive liner technology that would improve channel cleanup and enhance
productivity. Now independent flow tests have proved that the DYNAenergetics reactive liner shaped charge deliv-
ers hole size and flow performance that are superior to the other tested charges in various borehole conditions.
OBJECTIVE ASSESSMENTA recent SPE paper (SPE 125752) published the results of flow tests conducted with reactive liner shaped charges.
The tests were carried out under controlled conditions in an API RP 19B Section 4 Perforation Flow Laboratory. Three
commercially available 3 3/8" reactive liner shaped charges were tested and compared to a flow-optimized 3 3/8"
25g HMX shaped charge using a non-reactive liner. One of the reactive liner shaped charges was the DYNAenergetics
26g RDX DPEX, the other two were third-party 25g HMX shaped charges. The tests were conducted in Berea Sand-
stone targets with mineral-oil flow to simulate a typical oil-bearing formation. The compressive strength of the rock
was 8,600 psi, the pore pressure 3,600 psi and the average permeability 453 mD. Balanced, 1,000 psi-underbalanced
and 1,000 psi-overbalanced conditions were simulated. The test for each borehole condition was repeated three times
for each charge to ensure statistically valid results.
Since the publication of this SPE paper, further flow tests have been conducted in low permeable Carbon Tan Sand-
stone targets with nitrogen flow to simulate a typical gas-bearing formation (Results published in paper OTC 20893).
The charges and borehole conditions used were identical to those above. The compressive strength was 7,200 psi,
the pore pressure 3,600 psi and the average permeability 9.2 mD.
IMPRESSIVE RESULTSOil-bearing Berea Sandstone: The perforating data revealed that the DYNAenergetics DPEX charge came out best
with an average open perforating channel depth of 98%. The results also showed that the productivity ratio of the
DPEX reactive liner shaped charge outperformed both competing reactive liner shaped charges and the flow-optimized
DP charge in overbalanced conditions. The fact that flow-optimized shaped charges have been shown to increase
productivity by more than 10% over benchmark conventional shaped charges demonstrates what productivity gains
are possible through use of the DYNAenergetics DPEX shaped charge.
Gas-bearing Carbon Tan Sandstone: In overbalanced conditions the DYNAenergetics DPEX charge delivered a
superior hole size and open perforating channel and was the only charge where the productivity ratio indicated
a flowing condition. CT scans of the cores showed that it was also the only charge that displayed a continuous
perforating channel without segmentation. The proven superiority of the DPEX charge in overbalanced conditions
makes it the ideal solution for such applications.
[inch]
01
02
03
04
05
06
07
08
09
10
1,000 psi overbalance,fluid flow,Berea sandstone
Balanced, fluid filled,Berea sandstone
1,000 psi underbalance,fluid flow,Berea sandstone
1,000 psi overbalance,gas flow,Carbon Tan sandstone
CT scan image at 1,000 psioverbalance, gas flow,Carbon Tan sandstone
CLEAR BENEFITSThese independent flow tests confirm the superiority of the DYNAenergetics DPEX reactive liner shaped charge
technology. The benefits are clear:
Increased productivity in overbalanced conditions
Increase in perforating channel diameter over conventional shaped charges
Effective crushed zone cleanup during perforation, even in overbalancedborehole conditions
No slugs to plug the perforating channel
Although DYNAenergetics engineered this DPEX liner technology for a 26g shaped charge for use in 4" and 4 1 /2"
guns, it is now available for all other gun sizes and exposed strip guns.
23g BH23g GH23g DP 23g DPEX
SALES HEAD OfficeDYNAenergetics GmbH & Co. KGBernd-Rosemeyer-Str. 7
D - 30880 Laatzen | Germany
Phone +49 - 5102 - 6757 - 0
Fax +49 - 5102 - 6757 - 27
For contact details of your nearest DYNAenergetics regional officeand product specifications, please see our website:
www.dynaenergetics.com