JCX3-GMD Focused Resistivity & Natural Gamma Probe

JCX3-GMD Focussed Resistivity(LL3) & Natural Gamma Probe

PRODUCT PARAMETERS

It adopts constant power supply, with wide measurement dynamic and accurate data.

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Description

FAQ

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Description

JCX3-GMD Focussed Resistivity(LL3) & Natural Gamma Probe

Abstract

JCX3-GMD Focused Resistivity (LL3) & Natural Gamma Probe combines three lateral resistivity, natural gamma and natural potential measurement parameters into one to improve measurement efficiency. With the power supply in a focused way, the measurement is less affected by the well fluid and the surrounding rocks above and below. Not only is the measurement result closer to the real resistivity, but the measurement curve is steep and symmetrical. It has a good effect in dividing the ore layer and thin ore layer in oil fields and coal fields and studying the ore layer structure.

Applicable Conditions

● Bare hole

● Fill with water or mud

Applications

● Divide ore layers and thin ore layers, study ore layer structure

● Divide stratum interfaces, determine changes in stratum phases

● Determine the location and thickness of aquifers

● Estimate uranium concentration

Features

● It adopts constant power supply, with wide measurement dynamic and accurate data.

Specifications

Three lateral electrodes	Stainless steel electrodes, Electrode length: A0=60mm, Ap=2×600 mm
Three-side power supply	250Hz AC constant power
Resistivity measurement range	1.2~1.2×105 ΩM, accuracy: 5% (10~10K ΩM)
Gamma detector	Nal crystal + photomultiplier tube
Natural gamma measurement range	1~32768 cps
Natural potential electrode	Lead electrode
Natural potential measurement range	-1200~+1200mV; 5%
Signal output	Bipolar encoding

FAQ

In gravity exploration (SI), what is the unit of gravity? How to convert gravity units between SI and CGS?

What are gravitational field and gravitational potential?

What is the normal gravity field of the earth? What are the rules for the change of the normal gravity field with latitude and altitude?

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.

What is the relationship between gravitational field strength and gravitational acceleration?

What is gravity exploration?