As the latest addition to LIVE PL digital slickline production logging services, digital pulsed neutron (DPN) service provides crucial information, such as fluid contact monitoring and fluid identification behind casing, to inform wellsite decision making for optimizing reservoir management and production in mature fields.
DPN pairs the field-proven Schlumberger small-diameter high-output pulsed neutron generator (PNG) with dual scintillation gamma ray detectors to provide real-time sigma measurement in mixed-salinity cased hole environments. Dual neutron burst with adaptive timing is performed to ensure the measurement's insensitivity to borehole conditions and eliminate the need for environmental correction.
Measurement precision is further honed by using the available job planner.
| Measurement Specifications |
|
| Output |
Sigma, apparent porosity, gas indicator |
| Logging speed |
1,800 ft/h [549 m/h] |
| Range of measurement |
0 to 60 cu |
| Vertical resolution |
2.5 ft [0.76 m] |
| Precision |
<±2% |
| Borehole fluid or formation water salinity |
>50,000 ppm |
| Mechanical Specifications |
|
| Temperature rating |
302 degF [150 degC] |
| Pressure rating |
15,000 psi [103 MPa] |
| Casing size—min. |
4 1/2 in |
| Casing size—max. |
9 5/8 in |
| OD |
1.72 in [4.37 cm] |
| Weight |
37 lbm [17 kg] |
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