LDP-DA
NUCLEAR LITHOLOGY DENSITY PAD 

LDP-DA
Lithology
Density Pad

LDP-DA.png

 
LDP-DA
Lithology Density
Presentation

LDP-DA Presentation.png

 

 

Part No: 14000 – 4401

DESCRIPTION

The Lithology Density Pad (LDP) assembles to the Pad Deployment Tool (PDT) mandrel section for logging operations. The LDP uses two gamma detectors to record bulk density and the photoelectric effect of the formation.
 
The difference between the measurements of the two detectors is used to correct the bulk density of the formation for mud cake and hole rugosity effects. Bulk density, density correction, photoelectric effect, and caliper are also measured with this tool. Bulk density is related to porosity and the photoelectric effect is related to lithology. Two 1 microcurie Cs-137 pilot sources stabilize the high voltage and spectrum.

SPECIFICATIONS

 
Parameters
English
Metric
Pressure
20,000 PSI
1,379 bar
Temperature
350° F
177° C
Weight
66.14 lbs
30 kg
Length
2.33 ft
0.71 m
Tool OD
5.1 in
12.95 cm
1 From end of top thread protector to end of bottom thread protector.
  Tool O.D. includes PDT
 

COMBINABLE WITH

The LDP-DA is combinable with all TTI open hole tools. Place anywhere below the Gamma Ray/Spectral Gamma Ray tools (GRT), but above the Phased Induction Tool (PIT).

REMARKS

The mandrel can be run in the eccentric mode to prevent caliper collapse in deviated wells.
 
For information on Parts, Test, Calibration and Accessory equipment available for the LDP-DA, contact your Tucker Technologies Technical Sales Representative,.

LOGGING PARAMETERS

 
Parameter
English
Metric
Vertical Resolution
  LDEN
8 in
20.3 cm
  PES
4 in
10.2 cm
  PEL
8 in
20.3 cm
Depth of Investigation
  LDEN
6 – 12 in
15 – 31 cm
  PES
3 in
7.6 cm
  PEL
6 in
15 cm
Measurement Range
  LDEN
1.0 g/cc – 3.5 g/cc
  PES, PEL
0.1 – 10 B/E
  Caliper PDT-GA            4.8 in, 12.2 cm – 22 in, 56 cm
Maximum Logging Speed
50 ft/Min
15.2 m/Min
Repeatability
  LDEN      ±0.015 g/cc@ 1.8g/cc; ±0.03 g/cc@ 2.7g/cc
  PES, PEL                                                              ±5%
Borehole Range
    Minimum
6.0 in
15.2 cm
    Maximum (PDT-GA)
18 in
45.72 cm
 

BOREHOLE ENVIRONMENT

Open, fluid- or air-filled holes; fresh or salt muds.

DEFINITIONS

LDEN = Litho Density
PES = Photo-Electric Short Spacing Detector
PEL = Photo-Electric Long Spacing Detector

 

This site and all material contained in it are considered confidential and may not be
reproduced in any form without written consent from TES.
© Copyright 2017 Tucker Energy Services  |  All Rights Reserved
Follow Us on...