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JZN-1 Probe
PRODUCT PARAMETERS
- The spectrum stabilization is achieved by real-time temperature compensation and monitoring the count rate of the high-energy peak symmetry channel, and the analysis is achieved by the linear matrix least squares method.
- The hardware multi-channel buffer solution is used before the high-speed AD to ensure that the instrument is suitable for high-radioactive formations.
- It can measure and record continuously or point by point. It greatly improves the work efficiency.
Description
JZN-1 Natural Gamma-Ray Spectroscopy Probe
Abstract
JZN-1 Natural Gamma-Ray Spectroscopy Probe can solve more geological problems by distinguishing the types and enrichment of radionuclides based on natural gamma-ray spectrum logging technology through comprehensive analysis of gamma-ray energy and intensity. The distribution patterns of uranium (U), thorium (Th), and potassium (K) are related to the mineral composition, diagenetic environment, organic matter content, and movement of oil, gas, and water of rocks, and have important geological prospecting significance.

Applicable Conditions
● Cased
● Bare hole fill with water or mud
● Bare Dry hole
Applications
● Exploration and quality evaluation of coal, gas, nuclear, hydrological and other mineral deposits
● Study phase changes and depositional environments
● Identify lithology and clay types
● Research to identify radioactive materials and contamination
Features
● The spectrum stabilization is achieved by real-time temperature compensation and monitoring the count rate of the high-energy peak symmetry channel, and the analysis is achieved by the linear matrix least squares method.
● The hardware multi-channel buffer solution is used before the high-speed AD to ensure that the instrument is suitable for high-radioactive formations.
● It can measure and record continuously or point by point. It greatly improves the work efficiency.
Specifications
| Gamma ray detector | BGO and Nal crystal + photomultiplier tube |
| Natural gamma energy measurement range | 0.1~3MeV |
| Natural gamma intensity measurement range | 1~32768cps |
| Measurement parameters and accuracy | eU, eTh 1~1000 (ppm); 5% eK 0.2 ~100(%); 5% |
| Signal output | Bipolar encoding |
FAQ
① In SI, it is m·s-2, and one percent of it is the international unit abbreviation g.u.;
② Conversion between SI and CGS: 1g.u.=10-1 mGal
Gravitational field: The space around the earth with gravity is called the gravitational field.
Gravitational potential: The gravitational potential W in the gravitational field is equal to the work done by a particle of unit mass moving from infinity to that point.
① The normal gravity field of the earth: Assuming that the earth is a rotating ellipsoid (reference plane), the surface is glossy, the internal density is uniform, or it is distributed in concentric layers, the density of each layer is uniform, and the deviation of the shape of the ellipsoid from the geoid is very small, then the gravity field generated by the earth is the normal gravity field.
② The normal gravity value is only related to the latitude, the smallest at the equator and the largest at the poles, with a difference of about 50,000 g.u.; the rate of change of the normal gravity value with latitude is the largest at 45° latitude, and zero at the equator and the poles; the normal gravity value decreases with increasing altitude, and its rate of change is -3.086 g.u.. The main feature of the long-term change is the "westward drift" of the geomagnetic elements, both the dipole field and the non-dipole field drift westward, and have a global nature.
The gravitational field strength is equal to the gravitational acceleration in both numerical and dimensional terms, and the two are in the same direction. In gravity exploration, all references to gravity refer to gravitational acceleration. The gravitational field strength at a point in space is equal to the gravitational acceleration at that point.
Gravity exploration is an exploration method that is based on the density difference of rocks and ores. Since density difference will cause local changes in the normal gravity field of the earth (i.e. gravity anomaly), it is used to solve geological problems by observing and studying gravity anomalies.
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