is designed to control technical condition of steel tubing and pump and compressor string in unkilled gas and oil wells of single-column and columned constructions, perforation interval specification.

Description

Features and Advantages

• the possibility of two pipes defectoscopy and thickness gauging performance with pipe wall thickness change value and their transverse and longitudinal defects*;
• the possibility of columned well construction determination (up to 4 pipes);
• high-sensitive thermometer and GK presence for according to depth.

Apparatus composition

• digital downhole tool with two centering devices, surface interface block with power supply, software, control and monitoring station;
• operates with computer of Notebook type (mobile variant) or in the composition of any software-controlled logging station.

Specifications

Pipe maximum diameter, mm

324

Thermometer resolution, °С

0.01

Thermometer time constant, sec

0.5

A single-pipe wall thickness measurement error, mm:

for single pipes 2,5″

for single pipes 5”

 

0.3

0.4

Through-tubing casing 5″ wall thickness measurement error, mm 5”

0.7

Minimum length of a “crack”-type detectable defect along the pipe axis, mm:

for single pipes 2,5″

for single pipes 5″

for casing pipes 5″ through-tubing measurement

 

 

14

30

70

Minimum length of a “transversal crack”-type detectable defect

1/6 of the perimeter

Maximum operating temperature, °C

120 (150)

Maximum operating pressure, MPa

100 (120)

Downhole dimensions, mm:

diameter

length (including centralizers and GR module)

 

42

2595

Weight, kg

9

* high radial and azimuthal resolution.

Results

Example of perforation interval identification

Example of collar defect detection

Certificate