| Customization: | Available |
|---|---|
| Accuracy: | <1mm |
| Horizontal Line: | 1 |
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Borehole logging equipment for SP and caliper is a digital control logging system. The measurement parameters are large and the scope is wide. Measure than 20 kinds parameters, covered with metal ore, coal, oil field, radioactive, hydrology, with great cost-effective.
1. Advanced AC variable-frequency regulating speed technology.
2. Automatic constant speed and manual speed control, automatic overload protection.
3. Automatically calculate the depth, self-compensate depth error
4. Self-locking brake and manual brake
What are the geophysical parameters in the well measured by logging instruments?
1. Electrical parameters
Resistivity: reflects the ability of rock to block electric current, used to divide lithology, determine oil and water layers, etc. There are obvious differences in the resistivity of formations with different lithology and fluid properties.
Conductivity: the reciprocal of resistivity, characterizes the conductivity of the formation, and plays an important role in detecting low-resistivity rock formations and judging the properties of formation fluids.
Dielectric constant: reflects the polarization characteristics of rocks under the action of electric fields, which can be used to judge water-flooded layers and estimate the residual oil saturation and water content of oil layers.
Natural potential: usually generated by the diffusion of ions between formation water and mud filtrate and the adsorption of ions by rock formations, which can indicate permeable layers, determine formation interfaces, formation water mineralization and mud content.
2. Acoustic parameters
Sound wave velocity (sound wave time difference): records the time required for sound waves to pass a certain length when sliding along the formations on the well wall, which is used to determine lithology, porosity and indicate gas layers, and can also synthesize vertical seismic profiles.
Acoustic amplitude: measures the attenuation of the first half-cycle amplitude of the first arrival of the acoustic wave. Open-hole acoustic amplitude logging can be used to find fracture zones, and cementing acoustic amplitude logging can be used to check the cementing quality.
Acoustic variable density: full-wave waveform logging, checks the degree of bonding between casing and cement ring and cement ring and formation in cased wells, determines the rock shear wave velocity in the open hole, and calculates the rock elastic parameters.
3. Radioactive parameters
Natural gamma: measures the intensity of natural radioactive rays in the well profile rock to discover radioactive minerals, determine rock composition, calculate rock physical parameters, and judge gas layers.
Natural gamma spectrum: records natural gamma rays in different energy ranges, which can give the content of potassium, thorium, and uranium in the formation, and is used to accurately determine the mud content of the reservoir, analyze the sedimentary environment, etc.
Neutron porosity: measured by using a radioactive source to emit high-energy particles to bombard the atoms of the formation, reflecting the porosity of the formation, which is the percentage of the measured fluid volume to the entire rock.
4. Other parameters
Formation density: measured by using a radioactive source to launch high-energy particles into the formation to bombard the atoms of the formation, that is, the mass of rock per unit volume, including solids and fluids, used to calculate parameters such as rock porosity.
Wellbore diameter: measure the size of the wellbore, understand the regularity of the wellbore wall, and determine whether the wellbore wall has a diameter expansion or contraction phenomenon, which is of great significance for logging data correction and cementing design.
Formation dip and azimuth: measure the inclination angle and azimuth of the formation, used to study structural changes, determine faults, unconformities, etc., and can also detect the formation fracture zone near the wellbore wall to determine the direction and azimuth of the fracture.
| 12bit A/D conversion, program-controlled magnification K=0.5~128 | |
| Counting channel | f≤500KHz |
| Digital signal transmission frequency | 9600bit/s |
| Power supply cycle | 400ms |
| Current | 2mA~50mA optional |
| Signal input range | ≤±10V |
| Continuous working time | ≤24h |
| Power consumption | <200W |
| Volume | 420*260*210mm |
| Weight | <7kg |
| Working temperature range | -10ºC~50ºC |
| Working power supply | AC220V±10% 50HZ±5% |
| Logging speed | 0-30m/min adjustable (as per sampling interval) |
Main instrument and software
Winch Controller
Winch and cable
Well logging probes
|
No. |
Probe Name |
Usage |
|
1 |
M552 combined sidewall probe |
Double-spaced compensated density (DsCD),Natural gamma, three direction laterolog,caliper and spontaneous potential |
|
2 |
M451 combined density probe |
Double-spaced compensated density,natural gamma, three direction laterolog and spontaneous potential. |
|
3 |
S524-1S combined acoustic wave probe |
SP sound velocity, acoustic amplitude. |
|
4 |
CZ521 combined natural gamma probe |
Magnetic locator, natural gamma. |
|
5 |
W422 temperature & liquid resistivity combined probe |
Well temperature, liquid resistivity. |
|
6 |
CX3019 SP, inclination, natural gamma combined probe |
SP, inclination, natural gamma |
|
7 |
JSC-1 digital inclination probe |
Inclination |
|
8 |
H411 magnetic susceptibility probe |
Seeking for magnetic iron ores |
|
9 |
X411 three-lateral direction resistivity laterolog probe |
Determines the resistivity of rock strata |
|
10 |
J411 caliper probe |
Check the integrity of well and provide additional information. |
|
11 |
LLY-1 flow probe |
Liquid flow |
|
12 |
R411 natural gamma probe |
Natural gamma |
|
13 |
JD-1 conventional resistivity log probe |
SP, NR and LR |
|
14 |
JD-3 Soft-electrode probe |
SP, NR, LR and IP |
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