SKL-76 hardware-software wireline complex for geophysical surveying of the production wells

The complex serves for geophysical surveying of the open boreholes of the vertical and directional wells of 120-245 mm diameter being drilled for oil and gas, both while tripping the complex in and while tripping it out. It is possible to work through the drilling tool with 90-110 mm inner diameter.

Advantages of the Complex:

  • geophysical surveying is performed during one trip
  • reduction of downtime
  • estimation of relative dielectric permeability, which allows to separate oil-saturated reservoirs from the reservoirs washed with fresh and mixed waters

Methods used:

  • VEMKZ (High frequency electromagnetic logging)
  • IK (Induction logging)
  • BK (Lateral logging): LLS, LLD
  • BKZ (Lateral logging sounding):
    0,2 0,1 N;   A 0,4 M 0,1 N;  1,0 M 0,1 N;   2,0 M 0,5 N;
    A 4,0 0,5 N;  N 0,5 M 2,0 ;  N 13 M 0,5
  • SP (Self-potential of the well)
  • Resistivity logging
  • 2 NNKt (Compensated neutron-neutron logging on thermal neutrons): NTNL,FTNL
  • GK (Gamma logging)
  • Directional survey: zenith angle 0- 120; azimuth 0- 360
  • Temperature logging

Technical characteristics of the Complex:

Range of working temperatures, + 5 150
Max hydrostatic pressure, MPa 60
Diameter of modules, not more than, mm 76 
Length of each module, not more than, m 4
Range of resistivity measurements, Ohmm:  
for VEMKZ-20 0.2—200
for BKZ gradient-probe 0.2—5000
for BKZ potential-probe 0.2—1000
for BK 0.2—10000
Range of specific conductivity, mS/m
for IK 10—2.500
Total length of the Complex, not more than, m 22 
Allowable axial load, not more than, t:  
tensile load 5
Logging speed, not more than, m/hr 1400
Weight of the Complex, not more than, kg 600

SKL-76 wireline complex

SKL-76 Complex

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