The Litho-Density tool uses a gamma source (1.5Ci, Cs137) and two detectors of different spacing to contact the sidewall directly. Based on Photoelectric Effect and Compton Effect, corresponding energy windows are set up, recording the gamma ray of various windows, and measuring the lithology and density of formation.

The Micro-Spherical Focused sonde can provide the flushed zone resistivity and it is used in the formation liquid saturation calculation along with other resistivity tools.  

Density: preamplifier circuit, high voltage circuit and photomultiplier .

MFS:  MSFL  pad. 

General requirement:wiring is according to 530 design requirement, and the housing material is compliant with 530 technical requirements.

O.D.:                                 110mm

Length:                             1125mm

Density:

Working Temperature:              -25 --175℃

Maximum Pressure:                  140MPa

Storage Temperature:              -40--70℃

Shock:                                     50g 3d（11ms）

Vibration:                                5g  3d（10～60Hz）

Power Supply:                          250VAC，50Hz

Measuring Range:                    Bulk density               1.0g/cm3~3.0g/cm3

Photoelectric Index:                  1.0Pe~14Pe unit

Logging  Speed:                        550m/h

Vertical Resolution:                    360mm

Investigation Depth:                   50mm~240mm

Measuring Accuracy:  

Bulk density:  ±0.025g/ cm3(regular borehole, Thickness of mudcake is less than12.5mm)

Photoelectric Index:   6%（1.4≤Pe≤6.0

Repeatability:                   

Bulk density:  ±0.015g/cm3(regular borehole, Thickness of mudcake is less than12.5mm)

Photoelectric Index:    ±0.5Pe unit (mudcake thickness is less than3mm, and no barite)

MFS:

Working Temperature:             -25 --175℃

Max. Pressure:                         140MPa

Storage Temperature:              -40--70℃

Shock:50g                              3D（11ms）

Vibration:                                 5g  3D（10～60Hz）

Power Supply:                          250VAC，50Hz

Measuring Range: Rxo:            0.2~2000Ω.m

Vertical Resolution:                 250mm

Investigation Depth:                100mm

Measuring Accuracy: Rxo:        0.2~200Ω.m (not including 200Ω.m)±5%

200~1000Ω.m (not including 1000Ω.m)±10%

1000~2000Ω.m±15%

SDL LOGGING CURVE

MSFL LOGGING CURVE