Research and production enterprise that creates special and unique methods and technologies for geophysical research of oil and gas, ore and coal wells

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MID-A AUTONOMOUS ELECTRO-MAGNETICDEFECTOSCOPE-THICKNESS GAUGEFOR MULTI-STRINGOPERATIONS

Development of AO NPF GITAS with PAO GAZPROM

is designed for monitoring the technical condition of tubing, casing pipes and
well strainer by a complex of methods including defectoscope and thickness
measuring tool, high-sensitivity thermometer, gamma-ray logging, pressure
sensor and recording the measurement results into non-volatile memory.


In newly drilled wells MID-A tool is used for monitoring:
• well design up to four casing barriers evaluation
• compliance with the project of casing string set point with different
diameters and wall thickness
• liner setting interval
• casing integrity and degree of wear during tool operation.
In operating wells the MID-A tool allows to determine:
• perforation intervals
• location of through defects
• parting of casing in two-string structure
• actual installation intervals of sealing patches
• actual installation depth of casing packers, etc
• well design up to four casing strings
• corrosion intervals and degree of casing string wear
• intervals of casing defects for repair
• thickness of the 1st, 2nd, and 3rd columns.


SPECIFICATIONS

Maximum diameter of the investigated pipes, mm324
Measurement error of single pipe wall thickness, mm
- for single pipes 2.5»
- for single pipes 5”
Through-tubing casing 5” wall thickness measurement error, mm
±0,4
±0,5
±0,7
Minimum length of a defect “crack” type along the pipe axis, mm:
- for single pipes 2.5»
- for single pipes 5”
- for casing pipes 5” through-tubing measurement
30
50
70
Minimum length of a defect “transverse crack” type1/6 of the perimeter
Temperature sensor resolution, °С0,01
Maximum operating temperature, °С120,150
Maximum operating pressure, MPa100 (110)
Diameter, mm:42
Autonomous operation time, hfrom 30
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