JGS-1B Geophysical Well Logging Equipment

JGS-1B Geophysical Well Logging Equipment

I. Ground Unit and software

Main Applications and Features

• Coal Field Digital Integrated Logging
• Hydrological Engineering Digital Integrated Logging
• Solid Metal Ore Digital Integrated Logging
• Other Minerals Digital Integrated Logging
• External Laptop (Desktop PC)
• For upward logging, also for downward logging
• Receive digital signal, analog signal
• 8 taps of power supply current, Optional
• Automatic sampling as per depth interval, sampling interval arbitrarily
• Indoor simulation logging, repeatability observation of instruments and probes
• Membrane panel, attractive and durable

Technical Specifications

• 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~500 mA Optional
• Signal Input Range: ≤±10V
• Continuous Working Time: ≤24 hr
• Power Consumption: ＜200W
• Volume: 420×260×210mm,
• Weight: ＜7Kg
• Working Temperature Range: -10℃~ +50℃
• Working Power Supply: AC220V±10% 50Hz ±5%
• Logging Speed: 0~30 m/min Adjustable (as per sampling int

II.Winch and Cable

Cable: Cable is the double steel armored, with 4 conductor, 3/16 inch diameter

III. Probe

1. M552 Combined sidewall probe

(Radioactive Source: Ci137Cs, 80-100 millicurie ) Applications

Have a good performance of stratum Lithology acquisition, strata division, resistivity, porosity and volume density determination so that makes it a incompensible part of the series probes. It can valuate the radiate minerals content such as K and U, tell radiate minerals from non-radiate ones and also can serves as part of other methods.

Specifications

Measured parameters: double-spaced compensated density (DsCD), Natural Gamma, Three direction laterolog, Caliper and spontaneous potential

Data transmitter: 8-bit serial output Work environment: -10℃ to 70℃

Dimensions:Ф50×2950mm (divided to two segments) Probe weight: ≤28 Kg,

Pressurization: less than 20Mpa

DsCD (double-spaced compensate density log)

The source is based on oriented-emitting, and explorer uses long- or short-spaced oriented receiver which is wall-sticking can reduce affect borehole type to the density measurement. Work source strength: 100mCi137Cs radioisotopes.

Short spacing: 200mm, Long spacing: 350mm Glimmers body: Nal(T1), Ф23×40mm Photomultiplier Tube: GDB23

Counting range: 0 to 32000cps Measurement density range: 1 to 4g/cm3 Measurement relative error: 5%

Stability: work a continual 4-hour (5μCi or C s137 source), and the output changes less than 5%

Natural Gamma logging

Glimmers body: NaI(T1), Φ23×60mm Photomultiplier Tube: GDB23 Measurement range: > 30Kev γ-rays Counting range: 0 to 32000cps

Stability: be able to work a continual 4-hour, and the output change no more than 3.5%(an average of 100 data set).

Trace-interval disturbance: Values the source-loaded traces can disturb the natural ones are no more than 0.5%.

Three-lateral Resistivity laterolog Range of measurement: 0 to 2kΩ Scaling accuracy error: <5%

Stability: can work a continual 4-hour, and its output changes no more than 5%. Main electrode length: 25mm, electrodes full length is 455mm

Caliper logging

phole device controls the downhole probe, make it instantly fold or unfold the legs. Measurement range: φ50mm to φ300mm

Measure sensitivity: 0.5mm Scale accuracy error: <3% Spontaneous potential Measuring range: -2V to +2V Measuring accuracy: ±2.5 mv

2. W422 Temperature and liquid resistivity combined probe

• Measuring range: -10℃ to 100℃
• Measurement sensitivity: ≤0.05℃
• Temperature-sensing time: ≤1s
• Temp-measuring derivation: ≤5%
• Dimensions: φ40×1330mm,φ50×1230mm (3000m)
• Pressurization: ≤ 20Mpa, ≤ 30Mpa (3000m)
• Weight: 6.7kg, 7.8kg (3000m)
• Stability: the output changes of no more than 3% for 4 hours of continuous operation under the same conditions
• Applications: locate the aquifer bed or thermal spring in the geothermal survey; search for petroleum and gases

3. X411 laterolog-3 resistivity Probe

• Measuring range: 0 to 10KΩm
• Output signal: 0 to 9V DC
• Work temperature : -10℃ to 60℃
• Dimensions:ф40×1416mm, ф50×1416mm (3000m)
• Pressurization: ≤ 20Mpa, ≤ 30Mpa (3000m)
• Weight: 6.6kg,7.2kg (3000m)
• Application: determines the resistivity of rock strata.

4. J411 Caliper probe

• Measuring range: 40mm to 300mm
• Output signals: 0 to 9V DC voltage
• Sensitivity: 1mm
• Work temperature: -10℃ to 60℃
• Dimensions: φ40×1320mm, φ50×1324mm (3000m)
• Pressurization: ≤ 20Mpa, ≤ 30Mpa (3000m)
• Weight; 6.6kg,7.2kg (3000m)
• Applications: check the integrity of well and provide additional information to help.

5. R411 Natural gamma probe

• Measurement parameter: nature gamma
• Dimensions: ф40mm×870mm;ф45mm×870mm (3000m)
• Pressurization: ≤ 20Mpa
• Digital transmission: 8 bits serial output
• Operating temperature: 0℃ to +60 ℃
• Weight: 5.7 kg; 6.8 kg (3000m)
• Range: more than 30Kev
• Scintillator: NaI(Tl)、φ23×60mm
• Photomuitplier: GDB23
• Counting range: 0 to 32000 cps

6. JD-2 Conventional Resistivity & SP Probe

• Dimensions: φ40×2332mm (A1.6M0.4N)
• Pressurization: less than 15Mpa
• Measurable parameters: SP, NR, and LR
• Resistivity Range: 0 to 5KΩm
• SP Range: -2.5v to 2.5v
• Application:Ascertain the thickness of strata, and stratum water resistivity, estimate clay content, divide the permeable strata and sections in erosion belt in the gasoline resistivity log, and effected thickness of oil stratum.

7. JD-3 Combined Probe

• The spacing of the four electrodes is up to you
• Measuring parameters: Spontaneous potential (SP), Short Normal Resistivity, Long normal Resistivity and Induced Polarization (IP)
• Measuring range: 0 to 10KΩm
• Measurement sensitivity: 0.04Ωm
• Scale accuracy error: <5%
• Pressurization: less than 15Mpa
• IP: its specifications are up to a ground meter.
• Applications: thickness of rock, water resistivity, clay content, permeability, resistivity of erosion belt, lithology and oil stratum thickness.

8. NP442 Multi-channel spectrum probe

• Measuring range: 0.3Mev to 3Mev full differential spectrum
• Resolution: standard-source C137s(0.66Mev) ≤15%
• Time count range: 4″,12″,20″,28″,36 by manual
• Integrated nonlinear: ≤2%
• Differential nonlinear: ≤±5%
• Dead time: < 50μs
• Stable spectrum source: 133Ba, 5μCi
• Pressurization: less than 20Mpa
• Dimensions: Main probe: φ45×1330mm, Probe 1st: φ40×800mm,Probe 2nd: φ65×800mm
• Stability: the biggest error is less than 5%, which the average value of each data set comparing with the total average.
• Application: in research of uranium ore, divide the strata, and tell the oil stratum from the water zone.

9. Z422/SZ422 Neutron combined probe

• Measuring parameters: N-N, natural gamma
• Neutron activated source: 241Am-9Be, 1Ci
• Counting range: 0 to 10000cps
• Proportional counter : 39He
• Natural gamma:
• Scintillating material: Nal(T1), Φ23×60m
• Photomultiplier tube type: GDB23
• Measuring range: >30Kev gamma ray
• Counting range: 0 to 32000cps
• Work temperature:-10℃ to +60℃
• Dimensions: φ45×2050mm,φ50×2000mm (3000m)
• Pressurization: ≤ 20Mpa, ≤ 30Mpa (3000m)
• Weight: 7.8kg, 8.6kg (3000m)

10. H411/SH411 Magnetic susceptibility probe

• Measuring range: 1 to 10000×10-4 SI
• Output signal: 0 to 9V DC voltage
• Scale accuracy: ≤5%
• Stability error: ≤10%
• Work temperature: -10℃ to 60℃
• Dimensions: φ45×1200mm,φ48.5×1377mm (3000m)
• Pressurization: ≤ 20Mpa, ≤ 30Mpa (3000m)
• Weight: 5.6 kg; 6.9kg (3000m)
• Application: seeking for magnetic iron ores