Cased Hole Services

Now serving North Dakota, Mississippi, Kansas, Michigan, and Texas.

1Multi-Finger Caliper


The Multi-Finger Caliper (MFC) has 24 to 60 high resolution calipers which measures the internal radii of the wellbore tubing and casing. Accurate measurements can be made in tubular sizes from 1.75 inches to 16 inches in diameter. The MFC uses a series of “contactless” displacement sensors and a corresponding number of measurement fingers. When moving along the inner casing wall, the radial displacement will be changed into an axial displacement of the sensor, which is then processed, coded, and transferred to surface system where the image of the casing will be obtained.
2Corrosion Thickness Tool
Our corrosion logging tool utilizes electromagnetic, pulsed eddy current technology to determine internal and external corrosion defects of tubing. When run in conjunction with a multi finger caliper, both internal and external defects can be determined. However, our software and analytical team can also determine defects through an inner tubing to be able to provide accurate analysis of external casings up to 16". The electromagnetic corrosion tool can detect corrosion in the form of metal loss, holes, pitting, and mechanical deformation through an inner string to the external casing.
3Pulsed Decay Neutron
pnn-tool The thermal decay time log is a record of the rate of capture of thermal neutrons in a formation after it is bombarded with a burst of 14 Mev neutrons. An electronic neutron generator in the tool produces pulses of neutrons which spread into the borehole and formation. The log is also called pulsed neutron logs or neutron lifetime logs, and are often called by various service company abbreviation, such as TDT, PNL, NLL, PDK, etc. Thermal decay time, TAU, is the time for the neutron population to fall to 1/e (37%) of its original value. Neutron half-life is the time required for the neutron cloud to decay to one half its original concentration.
4Cement Bond Tool
cement-bond-tool

Cement bond tools measure the bond between casing and the cement placed in the annulus between the casing and the wellbore. Prestige utilizes both 8 and 16 sector bond tools which allows us to provide clients with tubings from 4" to 22" a proper cemented casing evaluation.The measurement is made by using acoustic sonic and ultrasonic tools.

The measurements of industry-standard sonic tools are usually displayed on a cement bond log (CBL) in millivolt units, decibel attenuation, or both. Reduction of the reading in millivolts or an increase in the decibel attenuation is an indication of better-quality bonding of the cement behind the casing to the casing wall.