Well/Borehole Logging system for geolophysical and hydrology borehole well logging tool

Well/Borehole Logging system for geolophysical and hydrology borehole well logging tool

Borehole well logging tool, also known as well logging or wireline logging, can provide accurate data of the physical properties of geologic units within the borehole environment. Borehole logging tools encompass a wide range of sensors to evaluate the in-situ formation in boreholes either cased or uncased. Tools range from mechanical devices, nuclear/gamma, acoustical, electrical, imaging, and sensors for fluid properties. In all cases the system consists of the borehole tool that is manipulated up and down the borehole from a winch up to several hundred feet or more.

Common applications involve detailed mapping of fracture zones and their respective orientation, geologic characterization of rock types, fluid flow for groundwater evaluation of transmissive zones, contaminant or tracer detection, and rock properties. The borehole systems are highly portable and can be transported by logging vehicle, ATV, or flown into to remote sites if necessary. Industry standard-WellCADTM Software is used for data display and interpretation of sensor data. The software produces interpreted fracture orientation, log editing, analysis and presentation of all logging data.

Natural Gamma & Electrical Resistivity probe
Description
The Electrical Resistivity probe measures natural gamma,gradient resistivity,normal resistivity and spontaneous potential (SP) simultaneously. Users can log resistivity profiles with different depths of investigation and gain information about permeability, porosity, water quality and geological formation properties.
Operating Conditions:Uncased；Borehole Fluid:Water or Mud.
Features & Benefits
1,The probe will digitize the measured information of the stratum and transmit it to the surface to avoid the effect of the cable on the measurement data.
2,Constant power, adaptive measurement, no manual operation.
Applications
Facies changes；Quantitative geological formation properties
Identification of hydrostratigraphic units
Aquifer thickness；Water quality
Identification of hydrocarbon intervals
Detection of ore body zones；Bed boundary analysis
Parameter
1. Instrument power supply:DC200V±20%,Electricity≤40mA
2. Electrode array: N 0.6 M2 1.3 M1 0.3 A
3. Natural gamma sensor:NaI Crystal
4. Measuring range:
Apparent resistivity:1～4000Ωm(customize10000Ωm)
Spontaneous potential (SP):±1200mV
Natural gamma:0～32768cps
5. Measurement accuracy:2%(10～4000Ωm)or ±1Ωm
6. Environmental: Temperature≦80℃；Pressure≤20MPa