How to choose the boreole logging probe?

The borehole logging equipment can be equipped with different logging probes.

According to different survey purpose, you need to use different probes.

There are some logging probes information for reference.

You can choose it according to the applications:

JDX-2Dr 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

JDX-3Dr  Natural Gamma & Electrical Resistivity Probe

Description

The Natural Gamma & Electrical Resistivity Probe measures natural gamma，16” Normal & 64”Normal Resistivity、Spontaneous Potential (SP)、Single Point Resistance(SPR)、Temperature. 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： AM 16”;AM 64”

3. Natural Gamma Sensor：NaI Crystal

4. Temperature Sensor:：Platinum Resistance （pt100）

5. Measuring Range：

resistivity：1～4000Ωm（customize10000Ωm）

Spontaneous Potential (SP)：±1200mV

Natural Gamma：0～32768cps

Temperature Range:  0℃～100℃， Resolution：0.025℃

6. Measurement Accuracy：2%（10～4000Ωm）or ±1Ωm

7. Environmental： Temperature≦80℃；Pressure≤20MPa

8. Signal: Bipolar Codes

JJY-3D  3-Arm Caliper

Description

The 3-Arm Caliper probe records a single continuous borehole diameter log by means of three mechanically coupled arms in contact with the borehole wall.Also equipped with liquid level detection electrode, Measure the depth of the liquid level in the borehole.Liquid level depth and caliper is the important parameters of hydrological survey well logging information.

Operating Conditions：Uncased；Borehole Fluid：Dry, Water or Mud。

Features & Benefits

1、Opening and closing of the motor-driver caliper arms is by surface command, allowing the probe to run into the borehole with the arms retracted.

2、Easy exchangeable caliper arm lengths and wear tips

Applications

Rock integrity evaluation

Fracture and cavity localization

Borehole diameter measurement

Borehole volume calculation before borehole completion, cementation

Often used in the implementation of environmental correction equations for other logs

Parameter

1. Measurement Mode：Three mechanically coupled arms in contact

2. Measurement Range：40～ 300 mm

3. Measurement Accuracy：1.5% F.S

4. Opening Mode：Software-controlled；Motor as transact organ

5. Environmental： Temperature≦85℃；Pressure≤20MPa

6. FD-3019 Composite interface（Special Order）

7. Signal：Bipolar Codes

Related Products

JJY-3D 3-Arm Caliper

JJY-2D（X - Y ) Borehole Geometry

JJY-1D Caliper（600mm-3000mm）

JSS-3 Sonic

Description

The JSS-3 Sonic probe used extensively in the groundwater, mining, and geotechnical industries. Sonic logs are widely employed, often in combination with other logs, to provide porosity, permeability, and geo-mechanical properties. This probe is ideal for cased-hole and open hole applications, such as fracture identification and cement bond logging.

Operating Conditions：Uncased；Borehole Fluid：Water or Mud。

Features & Benefits

1、Implement a high energy source wave generated by a ceramic-piezoelectric transducer.

2、Versatile, ubiquitous probe which functions with a wide range of applications and borehole conditions.

Applications

Identification and hydraulic characterization of fractures

Lithology identification

Variation of rock strength

Porosity and permeability evaluation

Cased hole: Cement Bond Logging (CBL)

Parameter

1.Sensor：Ceramic-piezoelectric transducer

2. Measuring Range： 125μs/m~555μs/m

3. Measurement Accuracy：5μs/m

4. Time-base：0. 5μs, Stability：0.1PPM

5. Environmental： Temperature≦85℃；Pressure≤20MPa

6.Signal：Bipolar codes