The Multiphase Array Production Logging Tool has been designed to address deficiencies
in the first generation of production logging tools intended to quantify multiphase flow in highly deviated or horizontal wells.
The platform forms a circumferential array of six multi-sensor arms.

Each arm performs the following measurements:
- Water Hold Up: Capacitance - Resistivity
- Gas Hold Up: Density - Acoustics
- Flow: Spinner - Fast Response Temperature

These measurements are made just below the arms, close to the lining wall,
providing a complete profile of the fluids through the well.
The sensors are all in close proximity,
ensuring that you are measuring both phase and velocity in real time during the measurement interval.

Water Hold Up
To differentiate between water and hydrocarbons (oil or gas),
the system employs an array of six capacitance sensors and six “four-electrode” micro-resistance sensors.
The combination of these sensors provides a quantitative measure of water retention
and through the use of correlation techniques velocity data can be provided.

Gas Hold Up
To differentiate between liquids and gases, a proprietary sensor has been developed that measures the density of the fluid.
This provides a very high contrast between liquids (oil or water) and gas.
A series of six of these sensors are placed circumferentially around the wellbore providing localized identification of gas entrainment.

Flow Velocity
In each of the six arms, there is a small diameter turbine flowmeter to measure the local flow velocity.
The flowmeter uses jewel-type bearings and a low-mass impeller to improve sensitivity.
In addition to the flow meter, a fast response RTD is also available to monitor small changes in temperature due to fluid entering the well

Features and Applications
- Multiphase flow profiling in horizontal and highly deviated wells
- Identification of fluid and gas inlets.
- Improved measurement reliability and integrity compared to first generation multiphase flow tools.
* All sensor measurements are simultaneous in the same depth range.
* The radial position of the arm is "placeable".
* Combinable with one or more MAPLT and other “Open Architecture” Spartek Tool Bus tools.
* Tool rotation improves coverage and provides measurement redundancy.
* Integrated RB sensor for orientation information.
* Cross-correlation in speed measurements.
* Multiple fluid identification measurements to improve redundancy.


The SS8335 Compact Production Logging Tool (CPLT) provides the most common measurements
for basic troubleshooting production logging applications.
The tool is easily equipped for pipeline leak detection, or for determining the efficiency of gas lift valve operations.
Although the basic package consists of a memory controller, casing collar locator, pressure transducer and temperature sensor,
any flowmeter (full bore, in-line, or continuous) can be easily attached to provide the best measurement of fluid velocity in a particular completion. The CPLT is scalable, meaning other production logging sensors can be connected to the basic instrument as applications require.
For example, if a multi-stage production profile is required fluid composition sensors
they can be connected to the CPLT without any change in technology.
Once any instrument is connected to the CPLT, the two-way communications link allows operator to query each sensor at any time
for configuration parameters, password, such as its serial number and position in the tool chain.
This feature combined with the SparWorks software database architecture largely automates setup and calibration procedures before each survey.

Integrated Sensors:
 Accelerometer
 Necklace locator in casing
 Pressure sensor
 Fast response temperature
 External Bus tool for compatible sensors
*Gamma rays
*Fluid type (density, capacitance)
*X-Y gauge
*Flow meters (continuous, fullbore)

 Tube leak detection  Gas lift valve efficiency test
 Monitor well efficiency  General production diagnosis
 Analyze profile of production by area  Monitor well stimulations  Integrity studies well mechanics
 Perfiles de inyección  Estudios después de las fracturas Analizar el perfil de inyección por zona
Primary Characteristics
 350°F (177°C) operating temperature
 15,000psi operating pressure
 H2S Qualification (NACE MR0175)
 Complete hardware and software solution for acquiring surface and downhole production data
 Memory mode operation
 "Smart Sensor" technology allows each sensor to identify itself when asked
 Dynamic instrument steering eliminates toolstring setup errors
 Built-in accelerometer sensor records movement and tilt
 Windows® compatible

Multi-Finger Caliper (MFC) has 24 to 60 high-resolution calipers that measure the internal radii of the well casing and tubing.
Precise measurements, it can be manufactured in tubular sizes from 1.75 inches to 9.63 inches in diameter.
The MFC uses a series of "non-contact" displacement sensors and a corresponding number of measuring fingers.
By moving along the inner wall of the casing, the radial displacement will become an axial displacement of the sensor, which is then processed, encoded, and transferred to the surface system where the casing image will be obtained.
The MFC can be used to detect casing deformation, bending, fractures, voids, scale deposits, paraffin build-up
and inner wall corrosion with high precision.

 24/40/60 Arms
 Maximum well diameter, minimum and average curves
 Tool offset
 Relative azimuth
 Chamber temperature in real time
 Real-time interpretations

Features and Applications
 Internal piping and casing inspection
 3D visualization tools help interpret data:
*Verification of the construction of the well
*Mapping of perforations
*Identification of casing drilling damage
 Easy assembly and disassembly to prevent maintenance and repair
 Hardened fingers for a long service life
 Combinable with memory controller or telemetry SRO for memory or E-Line operations.


The SS8230 Spectral Gamma Ray (SGR) is a high resolution, temperature compensated, digital downhole pulse height spectrum analyzer.
It has been designed to measure both naturally occurring radioactive isotopes
and common radioactive tracers used for fracture monitoring and other applications.
Naturally occurring radioactive isotopes such as potassium, uranium, radium series,
and thorium series they have characteristic gamma ray energies in the range 0.1 MeV to 3.0 MeV.
Analyzing the acquired spectra provides an improved evaluation of the formation (shales, sandstones, carbonates, dolomites, etc.)
via casing versus using the raw counts from a gamma ray tool.
In a cased-hole environment, SGR is commonly used to evaluate the location and effectiveness of well simulation operations.
and sand control operations by tracking tracers that are injected with proppant.
Common radioactive tracers include Iridium 192, Scando 46, and Antimony 124.
These isotopes also have characteristic gamma energies in the range of 0.1 MeV to 3 MeV.
Processing of the spectral data acquired by the SparWorks application software is provided.
Currently the software provides a peak to determine the Compton ratio if the measurement is primarily
from within of the casing or other form of spectral removal and the rate of individual count of spectrum energy windows.
The spectral elimination algorithm supports a maximum of three isotopes.

Features and Applications

 By evaluation of formation through casing.
 Depth correlation.
 Evaluate the location and effectiveness of fracturing operations.
 Monitor gravel placement during packing operations.
 SRO and Memory operations.
 Combinable with one or more SGR and other tools in the open architecture of the Spartek Bus Tool.
 Industry leading downhole pulse height analyzer.
 NaI (Tl) Crystal titration.
 Energy range: 60keV to 3 MeV
 16-bit PHA with baseline restore.
 177°C Temperature operating maximum.
 Four acquisition modes.
 Gain control with temperature compensation.
 SparWorks platform.
 Data acquisition.
 Processing of spectral gamma rays.


Preventing well integrity failures is critical.
A failure can result in lost production, contamination and costly repairs. The first step in prevention
is to monitor wells to determine if corrosion, erosion or geological deformation has compromised the integrity of the well.
If defects in well integrity are known
before become catastrophic, cheap corrective action
can be implemented to extend the life and net benefit of the well.

The Casing Inspection Tool (CIT) uses leakage magnetic flux technology to determine changes in the thickness of the pipe wall.
This is the same technology that is used in monitoring most pipelines. The technology can measure metal loss both internally and externally.

 High resolution full radial coverage
• 80 to 160 circumferential sensors
• 0.25 in. (6.4 mm) for an isolated well
• 20% wall thinning
 High vertical sampling
• 200 samples / sec
• 0.125 inch (3.2 mm) sampling at 120 feet per minute.
 Repeatability +/- 10%

The CIT's magnetic circuit was modeled extensively
to ensure that the design provides
the necessary magnetic field strength to saturate the case.
Depending on the size of the casing,
the MFL sensor section has 8 to 16 pads.
Each pad has 8 magnetic field sensors
to measure magnetic flux leakage independent of logging speed
and two shallow discriminator measurements
to determine if the flow leakage measurement is internal or external.
Together with a high-speed memory section,
CIT provides the highest resolution 3D image of casing integrity.

Primary Characteristics
 Tubular inspection for internal and external corrosion (metal loss).
 MFL sections optimized for larger shell sizes.
 Fast surface reading interpretation with high resolution memory data or operation only memory.
 Combinable with a Multi-Finger Gauge Tool for ID information.
 Compatible with the "Warrior" logging system built by Scientific Data Systems


The Segmented Cement Bond Tool (SCBT) provides the operator
with an accurate and economical means of inspecting the quality of the cement bond to the casing and formation.
The SCBT evaluates the quality of the cement joint and integrity to both the pipe and the formation
by providing the measurements of the cement bond amplitude (CBL) through the near receiver (3-ft crystal)
and variable density logging (VDL) through the far receiver (Crystal 5-ft).
Depending on the size of the tool, the SCBT has six to twelve segmented receivers.
These radial receivers are used to provide a high resolution map of the cement.
The same link measurement is available as an analog tool and a high-speed digital tool.
In the digital tool all sonic data is digitally captured and stored within 2 ms, allowing flexibility of outbound telemetry.
This tool is easily configured according to the requirements of the clients.
The separate acquisition and output module allows changes to the output telemetry to be easily accomplished.
The analog tool requires ten cycles to transmit all data to the surface and this requires a slower recording speed for the same vertical resolution. Both tools are designed for high temperature and high pressure environments.
Soon this tool will also be available with an interface to the "open architecture" Tool Bus. which allows for memory operations and SRO.

 Evaluation of the quality and integrity of the cement bond.
 Location of free pipe and cement stop.
 360° cement map main features
 Rated for high temperature and high pressure environments.
 Combinable with Gamma rays, CCL and temperature sensors (integrated in digital tools)
 The output can be configured to emulate most joining tools available today.
 Compatible with most surface systems.
 Works on all standard cables.
 Combines with all standard pulse tools in the background
 All receivers are built in a sloped housing to provide rigidity, strength and noise isolation.
 Electronic design verified for 1 hour of operation at 222.8 C° (415°F) to ensure reliability.
 Easy to repair and maintain.

This ruggedized gamma module uses a single shock-mounted electronics board to improve operations in high-shock/vibration environments; fewer cable interconnections, better shielding, maintenance, and improved reliability.

Input voltage: DP10048 +17 V to +30 V, DP10057 +21 to +50 V
Current: < 14ma @ 24V 25C , < 17ma @ 24V 177C Output signal: fixed 5 μs - Negative goes - + 5 V to Gnd
Output protection: output shorted to >10V: unit shuts down
Output Shutdown: Shorted output disables HV at ~2ma
Connectors: Glenair MWDM2R-15P and MWDM2R-15S (Nominal 200C) (Compatible with MDM series)
PMT: Hamamtsu R3991A-31
NaI Crystal: Saint-Gobain .77G5.2 (Active Area)
Sensitivity: ~1.0 counts/API
Accuracy: +/- 3% Count Rate Change - 25C to 177C
Gain stabilization: open loop gain compensation with temperature
Operating temperature: -50C to 177C
Survival temperature: 200C
Vibration: 30G, 50 to 250hz
Random Shock: 1000G
Diameter: 1.36”
Length: 15.37” (13.6” makeup)
Weight: ~1.7 pounds
Material: Black Anodized 6061 Series Aluminum

With Spartek Systems we provide custom electronics for gamma, neutron and MWD/LWD density measurements.
This includes both low voltage; 5 V, +13.5 V and -13.5 V, and high voltage supplies, from 850 V to 2000 V (positive or negative polarity).


Top View (No Chassis Interconnect Screws)

Bottom View (No Exposed Wires)

What differentiates ours from our competitors?
· Single board electronics: fewer cable connections.
· Improved electronics: better mounting against shocks and vibrations and easier to maintain.
· Electronics protected from external noise.
· Protection of inputs and outputs for electronics. HV runs at ~1000V compared to higher HV for competitors -
less chance of arcing, produces longer PMT life. · Hamamatsu R3991A-31 PMT – Strengthened for MWD use.
· Compatible with Mud Pulse and EM grounding schemes.
· Smart Gamma option available (shock and vib and record on board at 1 second intervals).
· Reinforced chassis without screws.
· Shock/vibration mount for Crystal.
· The electronics have an explosion filter for shocks and extreme vibrations.
Offers a 10 to 20X reduction in miscounts due to extreme shock and vibration.
· The drive is designed to fit snugly into the case. Kapton over O-rings or other additions are not needed.
· The harness is internal to the package. No exposed wires

Well Integrity Logging Systems

- Cement evaluation tools - Memory and SRO Segmented Cement Bond Tool (SCBT) applications are reviewed, covering not only the physics of the tool, but also real-world applications, examples, and analysis related to the API 10TR1 technical report.
Evaluation of cement sheaths. How cement quality relates to well integrity standards such as AER D-51, AER D-20 and ISO-16530-1/2 will also be discussed.

Well Integrity Logging Systems

- Casing Inspection Tools - Memory and SRO
This session covers Multi-Finger Caliper Tools (MFC) applications, discussing tool designs and operating parameters for real-world logging applications and analyzes related to well integrity standards such as AER-D-51, NORSOK guidelines. D-010 and ISO-16530-1 / 2 in the post Macondo era.
This presentation includes examples of actual logging of case failures and corrosion conditions, as well as discussions of how to plan for successful tool deployment and logging in SRO and memory transport options.

Well Integrity Logging Systems

- Casing Inspection Tools - Magnetic Flux Leakage (MFL)
This session reviews Magnetic Flux Leakage tools for high resolution coating thicknesses, specifically the Spartek Systems Casing Inspection Tool (CIT). This presentation reviews the operational fundamentals of magnetic flux leakage tools as well as a case study with real world examples.