is designed for oil/gas, coal, ore and hydrogeological wells investigation with a diameter of 150 mm, max. operating pressure up to 25 MPa and max. operating temperature 70 °C.
Advantages:
- combination of different geophysical methods according to the solving geological problem and customer demands;
- informational, energetical, constructive module compatibility;
- openness for system combination and addition of new transducers on a customer’s demand.
Complex Composition
Digital transducers with a diameter of 48 mm, which realize the following methods:
- gamma-ray (GR) or spectrometric gamma-ray logging (SGR);
- density gamma-gamma ray (Density GR);
- selective gamma-gamma ray (Selective GR);
- litho-density gamma-gamma ray (Litho-density GGR) lateral logging (LL) or scanning laterolog (Scan LL);
- neutron-gamma ray (N-GR) or spectral gamma-ray (SGR);
- neutron-neutron log (GL);
- full wave acoustical logging (FWAL);
- magnetizability log;
- caliper log (CL);
- temperature and resistivity log (TR).
The equipment AKIPS is compatible with any type of programmable stations.
AKIPS complex can be delivered in two modifications:
telemetry connecting link module, combined with GR module, to which any of the mentioned above modules can be attached from the underside; GR module serves for depth positioning during different round trip operations.
set of separate downhole tools, which constructively cannot be attached.
Delivery completeness: downhole digital modules, facilities for tool calibration, devices for tool servicing, spare tools and accessories kit, certificates, operating manuals.
*Interface unit, IBM-compatible computer Notebook, soft-ware controlled power-supply source, technological software.
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Modules
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Transduced Parameters
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Measurement Unit |
Admissible Error Limit |
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Absolute |
Relative |
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GR |
Intensity of rock natural gamma-ray |
up to 100 microrad/h |
±15 % |
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SGR |
Mass fraction: U, Th, K |
(10-100)·10-4 % 0.1-20% |
±15 % ±10 % |
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GGR-P |
Equivalent volume density |
1.1 – 4.5 (g/cm3) |
±3 % |
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Borehole diameter in hold-down bottom |
60 – 200 (mm) |
±3 mm |
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GGR-S NGK |
Effective atomic number |
6 – 22 (m.u.) |
±3,5 % |
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Equivalent water-saturated rock porosity, kn |
1 – 40 (%) |
±3 % |
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SNGR-W |
Gamma-quantum energy of pick-off gamma-ray |
0.04 – 8.0 (MeV) |
±3.5 % |
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VAK |
Interval time of elastic wave expansion |
120 – 750 (mkc/m) |
±[4.2+2.3 (40/kn-1)] |
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Elastic wave losses coefficient |
3 – 40 (dB/m) |
from ±1,5 up to ±3 |
±2 % |
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LL |
Apparent electrical resistivity |
0.1 – 104 (Ohm·m) |
±3 % |
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Apparent electrical resistivity on compensated borehole sonde |
0.1 – 104 (Ohm·m) |
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LLS |
Apparent electrical resistivity on a distant sonde (integral) |
0.1 – 104 (Ohm·m) |
±10 % |
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Apparent electrical resistivity on a compensated sonde (integral) |
0.1 – 104 (Ohm·m) |
±10 % |
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EML |
Apparent electrical resistivity on a distant sonde for each central electrode section |
0.1 – 104 (Ohm·m) |
±5 % |
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Apparent electrical conductivity on a distant sonde for each central electrode section |
0.1 – 104 (mCm/m) |
±5 % |
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Magnetizability |
(5·10-6) – 10 (m.u. Si) |
±5 % |
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Electrical conductivity |
0.1 – 104 (Cm/m) |
±5 % |
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TR |
Well temperature |
0 – 70 (°С) |
±2 °С |
±5 % |
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Electrical conductivity of borehole fluid |
0.05 – 20 (mCm/m) |
±5 % |
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DS |
Middle well diameter |
60 – 200 (mm) |
±3 mm |
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AKIPS-Ore Complex Element Set
AKIPS-Coal Complex Element Set