GOWell’s latest generation MTD tool is capable of evaluating quantitative thickness measurements of 3 concentric pipes. The state-of-the-art instrument combines a high power transmitter, improved signal-to-noise (SNR) electronics and fully configurable acquisition. This flexible approach allows a wide range of evaluations under different conditions and conveyance systems.​

A simple engineer selection of the functional mode ​

allows features such as: ​

• Logging in large pipes (up to 18-5/8 inches) ​

• Fast logging of single pipes ​

• Chrome/alloy pipe evaluation ​

• Thick casings ​

• Memory-optimized logging ​

• Logging in any fluid type ​

The MTD tool works using the Pulsed Eddy Current (PEC) which is an electromagnetic transmitted signal, this pulsed square wave signal contains a broad spectrum of frequencies which is useful for characterising various pipe thicknesses and improves the depth of penetration. (vs. conventional fixed frequency Eddy Current tools).​

  • Same depth Tx and Rx coils​

  • Short High Energy Pulsed    Transmission​

  • Inherently Multi-Frequency​

  • Time Domain Received signal

2nd String Evaluation (MTD-B)​ Damage detected in the second string. Note that the damage from the 8-5/8” sector ​

MTD, Magnetic Thickness Detector, can evaluate the wear, fissures, changes in the thickness of the walls due to corrosion or friction in the Casing or the Tubing​

Multifinger Caliper​

Problem: Liner not holding pressure​

Findings: MFC showed a ¾” hole with mostly clean inner pipe surface, while MTD shows corrosion in the interval, suggesting damage comes from the annulus, in.​

Added Value:  Pinpointed the damaged tubulars, and detected a where the damage is coming from, which helps create a workover program​


MFC, Multifinger Caliper to evaluate collapse, fissures, ovality, change in the Casing or Tubing ID. Available in 24 or 56 fingers.

Production Log- Injection Log- Microtorque

Production and Injection Logging Sensors PLT/ILT Conventional ​


  • Pression / Temperature​

  • GR/CCL​

  • Gradiomanometer ​

  • Acoustic Density ​

  • Capacitance​

  • CAT – Capacity Array Tools.​

  • Flowmeter, Fullbore Spinner y Continuous Spinner ​​


  1. The Spinner´s threshold is not sufficient for low flow​

  2. Measure high water cuts > 90% ​


It uses an impeller, like a turbine flow measure that can´t rotate. Instead, the flow is measure detecting the torque produces by the static turbine. This focus have important advantages in reliability, response and maintenance. ​

Flow Range​

0-60.000 bfd in 7”​

Maxim Temperature Operation​

150˚C - 302˚F​

Maxim Pressure Operation ​

15.000 PSI​

Maxim Tool Diameter​




  • It doesn't have mobile parts and any bearings to hold the impeller, by this, his reliability and precision are not affected when doing maintenance.​

  • There is no flow limits. The flow measure is continuous from zero.​

  • Flow measurement almost instantaneous with no significant effect by the impeller inertia.​

  • Easy detectable flow variations.​

  • Minor effects in the measure by fluids density or viscosity.​



Ultra Slim PLT that allows to go thru the Y-Tool with restrictions up to 1” ID and low Flow readings

Sensors: Gamma, CCL, Temperature, Pression, Flowmeter (Threshold 2 m3/D), Dual Water hold-up.  ( 0-100%)​

Threshold aprox 2 m3/d​


Oil, Gas and Water have different dielectric constants, THE MULTICAP uses this properties to identify the multiphase flows. This tool is highly recommended for high deviated or horizontals wells.​

The 12 and 6 capacitance mini sensors arrangement measure in radial form the different fluids phases. ​


  • 12 and 6 capacitance mini sensors radial form arrangement.​

  • The orientation of the tools is determined by an internal sensor.​

  • It works through tubing for phase identification.​

  • Fluid phase measure in radial form.​

  • It has blades centralizer that can adapt the pipe diameter.​​​

PLT- Microtorque Example –Infantas XXXX​

PLT- Microtorque Example – Castilla XXX

PLT Example- Production Well​


Sequence of events:​

  • Dynamic Logging to Q1 ​

       (Choque 128/64  12,4 MMscfd, 200 bwpd)​

  • Dynamic gradient​

  • Dynamic Logging to Q2 ​

       (Choque 23/64 5,2 MMscfd, 200 bwpd​

  • Dynamic gradient​

  • Static Logging after a 30 minutes shutdown​

  • Static Logging after a 3 hours shutdown ​

  • Static gradient​


Automatic registration of the liquid level depth.

Designed to register the level buildup curve (level depth, casing pressure, echo graph) according to the user-defined time scheme without the human presence.

Adapted to use for the control of pump operation in remote systems as fully automatic device.

Can be equipped with the gas balloon in a case of zero or low casing pressure


Designed for a long-term operation., simplicity of mounting & device startup

Ability for operation on zero and small casing pressure

Ability for operation with PC-computer, registration unit and smartphone to startup the device and view of measurements, compact and small weight


EchoWin@ Software: Designed to prepare the measurements received from echometer.

Software allows:

to edit parameters of measurement;

to view received measurements; to prepare

the level buildup curve; to calculate SBHP;

to export the prepared curve to a file;

to print the graphic and text reports;

to provide the spectrum analysis.



Optical fiber for DTS temperature profiles, to monitor the production or injection wells. Generate production/injection profiles, losses and migrations.​


The DTS uses the Raman effect to measure temperature ​

A optic laser pulse is send thru the fiber produces a disperse light that reflects in the transmission side. The intensity of the Raman dispersion is a temperature measure all the way thru the fiber. The anti-Stokes Raman signal changes his amplitude significantly with the temperature changes.​

The position of the temperature reading is determined measuring the return light pulse arrival timing, similar to an radar echo. This method is called OTDR (Optical Time Domain Reflectometry).​

Graph No 8. Heat Losses in the logging zone, Well Remojo, Jazmín XXXX)​





High Resolution North Seeking Continuous Gyro, Depth intervals as low as 0.1 FT; high accuracy in Inclination, Azimuth, Directional analysis (casing or tubing) to detect the Micro Dogleg, Tortuosity and Maxim Diameter analysis to evaluate the best BHA placement to reduce fatigue risk and wearing.


Adress: Carrera 7D #108A-87  Bogota - Colombia

Phone +57 1 2219328