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Cased Hole Logging

GAMMA RAY/GAMMA GUN

The Dialog gamma ray service measures naturally occurring gamma ray levels within the well bore.  Available in both a stand alone service and also in conjunction with our explosives operations, the log is used for identification of the formation lithology.  The service is also used as a correlation device between logs when the tool is run in combination with other tools.

The dual fire gun gamma ray service allows gamma ray correlation to occur during explosive operations.  With dual fire capability, the tool can be run with strings with multiple guns firing on positive and negative polarity.  This service is available in high temperature and high pressure applications (HTHP).

TEMPERATURE LOG

The Dialog temperature log service records a survey of the wellbore temperature.  The temperature log service is often run in conjunction with a noise log service.  Applications of the temperature and noise services include:

  • Assist with determining producing well problems
  • Determining zones of lost circulation
  • Identifying top of cement
  • Identifying underground blowouts
  • Determining location of leaking pipe
  • Identifying fluid entry

24 Arm Tubing Caliper

The primary function of the 24-Arm Caliper is to detect the deformation, bending, fracture, perforation, rod wear and inside corrosion of tubing or casing with 24 caliper fingers that are in close contact with the inner wall of the casing. All logging data, including 24-channels of borehole diameter is processed by the computer software, the diagram of borehole inner diameter and a 3-D image of pipe are created to intuitively demonstrate the condition in detail of downhole tubing or casing. This caliper measures pipe ID from 1.77″-7.09″.

40 Arm Casing Caliper

The 40 Arm Caliper is a mechanical downhole well logging tool. The primary function is to detect the deformation, bending, fracture, perforation and inner wall corrosion of casing with caliper fingers that are in close contact with the inner wall of the casing. Each caliper finger is connected to an independent non-contact displacement transducer that features small sizes, long service life, and high measurement accuracy. It measures pipe ID from 3.11” to 8.25”. After data is processed by the computer software, the diagram of borehole inner diameter and a 3-D image of the casing are created to intuitively demonstrate the damage details of downhole casing.

56 Arm Casing Caliper

The 56 Arm Caliper is a mechanical downhole well logging tool. The primary function is to detect the deformation, bending, fracture, perforation and inner wall corrosion of casing with 56 caliper fingers that are in close contact with the inner wall of the casing. Each caliper finger is connected to an independent non-contact displacement transducer that features small sizes, long service life, and high measurement accuracy. It measures pipe ID from 3.94” to 9.625” and out to 13.625” with extended length fingers. After data is processed by the computer software, the diagram of borehole inner diameter and a 3-D image of the casing are created to intuitively demonstrate the damage details of downhole casing. 

Spinner LOG

Dialog Wireline’s spinner/temperature survey Production Logging Tools measure reservoir performance, identify fluids, and detect leaks in connections or in situations that are too small to detect by caliper tools. This saves an enormous amount of time in lieu of relocating plugs and packers off tubing.

X/Y OPEN HOLE CALIPER

The X-Y caliper accurately measures two axes of the well bore allowing for an accurate cross-sectional area to be used in flow rate calculations, rather than a nominal diameter that may not be correct.  Additionally, any gross defects within the wellbore can be identified. The tool provides data to calculate cement volumes needed to cement casing in place for isolation.

The four-arm device is designed to minimize the risk of jamming in side pockets and other well fittings, and the robust roller design minimizes wear while optional larger rollers ensure the optimum measurement accuracy.

Cement / Radial bond log

The Dialog Cement Evaluation Service is used evaluate the cement bond and the existence of hydraulic zone isolation.  Depending on the applications, the cement evaluation service is performed with a single receiver bond tool, dual receiver bond tool or a radial bond tool.  The single receiver tool utilizes a single transmitter and one receiver spaced at three feet.  The dual receiver tool utilizes a single transmitter and two receivers spaced at three and five feet.   The radial bond tool utilizes a single transmitter with radial receivers at two feet along with standard receivers spaced at three and five feet.

Magnetic Thickness Detector Tool (MTD Tool)

The Magnetic Thickness Detector (MTD) is a 1-11/16 in O.D electromagnetic corrosion measuring instrument primarily run through tubing with the unique ability to simultaneously inspect tubing and the casings behind it. The integrity of the casing string can be evaluated with neither the requirement for costly workover rig, nor the time-consuming removal of the tubing completion. MTD43C-B Magnetic Thickness Detector is a downhole logging instrument which applies the electromagnetic method. It can be used to detect various damages such as corrosion, deformation, crack, fracture, holes in the downhole pipe string, and both the inner and outer metal loss of the double string, to determine the thickness of downhole pipe string, and can correctly reflect the well sketch and the position of the downhole tools (collar, casing shoes, packers and valves, etc.). MTD43C-B Magnetic Thickness Detector can be used for single logging, and also can be connected with GOWell Multi-finger Imaging Caliper product series (24-finger, 40-finger and 56-finger calipers) and Multi-Parameter Logging Instruments to do combination logging