Scorpion 89

Single-use hollow-carrier perforating system for deployment on wireline, coiled tubing, or tubing.

Characteristics of the Scorpion 89 perforating system
Parameter Value
Outer diameter, mm

  -  without installed centralizers   89  
  -  with installed centralizers   113  
Minimum casing drift diameter, mm

  - without installed centralizers   106  
  -  with installed centralizers   123  
Maximum allowable operating temperature, when held for 1 hour, °C  (170-200)±51) 
Maximum allowable hydrostatic pressure, MPa  80-1402) 
Maximum carrier diameter after perforator firing, mm:  
in a liquid environment 95
in a gas environment 97
Perforator section length, m 1/2/3/4/5/6
Maximum length of a multi-section perforator assembly, m:  
on wireline Depending on the perforator modification
on tubing Limited by the load capacity of the firing head and plate
Specific mass of a loaded section, kg/rm3) 26.4
Maximum wellbore dogleg severity, deg/10 m:  
for a multi-section perforator of standard design 5.0
for a multi-section perforator using articulated joint assemblies (SHUS or SHUS-A): for sections 1/2/3/4 m long 21.5/12.5/6.5/5.0
Phase orientation of standard perforator charges, deg.4) 60

1) The maximum allowable operating temperature and holding time of the loaded perforator are determined by the operational documentation for the EM (explosive materials) having the lowest allowable application temperature compared to the other EMs included in the explosive train of the perforator, as well as by the characteristics of the rubber products used.

2) The maximum allowable pressure may vary depending on the mechanical properties of the carrier tubes.

3) Mass of a running meter of a fully loaded section excluding the mass of reusable elements.

4) Phasing can be changed by special order.   
Characteristics of the applied charges
Shaped charge name Charge type Total explosive mass in the charge, g1) Perforation density, shots/m/phasing, deg.
         Average parameters of charge penetration performance, mm     
   Indicators on a QC-type composite target        Indicators according to API 19B
Penetration depth  Entrance hole diameter  Penetration depth Entrance hole diameter 
Scorpion PP-25DP DP 26.6±0.3

20, 18, 16, 13, 10 /
60
1000 11 1073 8.84
Penetration depth 
Scorpion PP-25SDP  SDP 1200 10 1337 11.1
Scorpion PP-25BH  BH 600 20 - -
Scorpion PP-25SBH  SBH 25.6±0.3 250 23 188 22.19
Scorpion PP-25GH  GH 26.6±0.3 600 16 559 16.26

1) Depending on the explosive material used in the charge.

Phasing and layout
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