JCX2-1 Probe | Geotech Instrument Co., Ltd.

PRODUCT PARAMETERS

Small diameter and lightweight instrument, suitable for use in small diameter drilling conditions
Highly intelligent, powered by constant power
Wide measurement dynamic range, accurate measurement

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Description

FAQ

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Description

JCX2-1 Dual-Lateral Resistivity Probe

Abstract

JCX2-1 Dual-Lateral Resistivity Probe adopts the method of focusing the power supply current, so that the current flowing out of the main electrode flows into the formation approximately vertically, reducing the influence of well fluid and low-resistance rock formation on the calculated resistivity, thereby making the measured and calculated apparent resistivity closer to the real resistivity of the rock formation. Through the deep focusing effect and shallow focusing effect, the resistivity of the original formation that has not been invaded and the resistivity of the shallow invasion zone are obtained respectively, and the presence or absence of invasion, shallow invasion and deep invasion are judged according to the difference between the two resistivities.

Applications

● Bare hole

● Fill with water or mud

Applicable Conditions

● Accurately divide lithological profiles

● Assess intrusion

● Distinguish the location of oil, gas and water layers

● Identify formation fissures

Features

● Small diameter and lightweight instrument, suitable for use in small diameter drilling conditions

● Highly intelligent, powered by constant power

● Wide measurement dynamic range, accurate measurement

Specifications

Electrode	Stainless steel electrode
Resistivity measurement range	0~10KΩ·m
Resistivity measurement accuracy	5% (10~10KΩ·m)
Electrode length	A0=100mm, A1=200mm, A2=700mm
Resistivity measurement accuracy	5% (10~10KΩ·m)
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?