DLT-AB
Resistivity Dual Laterolog Tool
DLT-AB
Dual Laterolog Tool
 
 
DLT-AB.png

 
DLT-AB
Dual Laterolog Tool Presentation
 
DLT-AB Presentation.png

 

Part No:  31000 – 4403

DESCRIPTION

The DLT provides the deep resistivity measurement (LLD) and the shallow resistivity measurement (LLS). Under normal conditions, the LLS will be the resultant of the flushed, invaded and transition zones.
 
The LLD, although affected by the previous zones, will respond to mainly the virgin zone. The accuracy of the measurement requires that the undisturbed formation have the largest contribution on the reading. Therefore, the mud resistivity must be low relative to the formation resistivity.

SPECIFICATIONS

Parameters
English
Metric
Pressure
20,000 PSI
1,379 bar
Temperature
350° F
177° C
Weight
353 lbs
160.12 kg
Length
14.85 ft
4.562 m
Transport Length1
16.67 ft.
5.08 m
Tool OD
3.625 in
9.2 cm
1 From end of top thread protector to end of bottom thread protector.
 

COMBINABLE WITH

It is combinable with all TTI down hole equipment.
 

REMARKS

When run in combination, the Micro Spherical Tool (MST), replaces the DLE as the bottom electrode.
 
This tool must be run in combination with a Dual Laterolog Bridle Adapter (DBA-BA),  to ensure correct readings.
 

For information on Parts, Test, Calibration and Accessory equipment available for the DLT-AB, contact your Tucker Technologies Technical Sales Representative

LOGGING PARAMETERS

Parameter
English
Metric
Vertical Resolution
  LLS
26 in
66 cm
  LLD
26 in
66 cm
Depth of Investigation
  LLS
30 in
67 cm
  LLD
72 in
183 cm
Measurement Range LLS & LLD                            0.2-40 KW
Maximum Logging Speed
60 ft/min
18.2 m/min
Repeatability:
  LLS & LLD       ±20%<1 W, ±5%1-1000 W, ±10%>1000 W
Borehole Range
Minimum
6.0 in
15.24 cm
Maximum
16.0 in
40.64  cm
 

BOREHOLE ENVIRONMENT

Open hole and fluid filled. The Dual Laterolog Tool (DLT) cannot run in non-conductive mud such as oil-based mud. In a large-diameter hole, it is recommended the DLT be run centralized.
If the mud is conductive relative to formation water, i.e., Rmf/Rw<2, the DLT should be used. Because the DLT is accurate at higher resistivities, it is ideal when fresh mud with resistivity readings above 200 ohms is encountered. Use the DLT in borderline cases of large boreholes (>12 in) or deep invasion (>40 in).
 
 
Dual Laterolog/Induction Preferred Application

 

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