DOWNHOLE TOOL
SPECIFICATIONS

Single cond. top sub 

Scintillation type gamma ray sections are identical except for pulse polarity and divide by ratio 

Top section for natural gamma and lower for omni directional density 

Excellent for gravel pack 

Uses a 150 mCi Cs-137(or equivalent) source  

Temp rating: 300° F 

Pressure rating: 20k PSI

1" Single Cond.

1" Four Cond.

1 1/4" HD Four Cond.

1 7/16" Single Cond.

1 1/2" Seven Cond.

Combines di-electric and temp measurement in one

Super polymer cell di-electric gives accurate determination of oil, water and gas

Platinum thin-film ceramic substrate gives excellent stability, response and accurate temp reading

+/- 1% accuracy

Temp rating: 300° F

Pressure rating: 20k PSI

1" Beryl-copper, 350° F, 15k PSI 

1 1/4" Stainless steel, 350° F, 5k PSI 

1 3/8" Monel, 350° F, 20k PSI 

1 7/16" Monel, 350° F, 20k PSI 

1 5/8" Monel, 350° F, 20k PSI 

1 5/8" High temp, monel, 500° F, 20k PSI 

1 5/8" W/ slip rings, monel, 350° F, 20k PSI 

2 1/8" Beryl-copper, 350° F, 20k PSI 

2 3/4" Beryl-copper, 350° F, 20k PSI 

3 1/4" Stainless steel, 350° F, 10k PSI 

1 7/16" shooting dual diode, monel, 350° F, 20k PSI 

1 5/8" motor tool tri diode, monel, 350° F, 20k PSI

1 5/8" shooting dual diode, monel, 350° F, 20k PSI 

1 3/4" shooting dual diode, monel, 350° F, 20k PSI 

2 1/8" shooting dual diode, Beryl-copper, 350° F, 20k PSI 

3 1/4" shooting dual diode(comes with quick change firing adapter), beryl-copper, 400° F, 20k PSI

This caliper measures EMF proportional to casing millivolts. With each survey point, the caliper is placed into a zone and arms set open, than a surface millivolt meter is used to make measurement of the potential. After readings, arms are retracted and the next zone is tested for current flow. To insure electrical connection to the inside casing, sharp carbide contacts are used. A minimum of 4 conductors are required for this survey.​

Motorized open and close 

12' electrical measure points 

18' overall length 

7' maximum length with break-down  

Temp rating: 300° F 

Pressure rating: 15k PSI

1 5/8" - 4" OD Standard Centralizer, 3 Leaf Springs

4" - 10" OD Standard Centralizer, 3 Leaf Springs 

 1 13/16"-16" Low profile centralizer; 3 leaf 

 2 1/4"-14" Standard centralizer; 3 leaf 

 2 1/4"-14" Housing type for neutron or temp probe; 3 leaf 

 2 1/2"-14" HD centralizer; 4 leaf  

 2 1/2"-14" Housing type HD centralizer; 4 leaf 

Plug in microprocessor electronics 

Dual/single transmitter, dual receiver emulation 

On the fly down hole pulse or sine calibration signal 

Different isolator frequencies available 

Interfaces with additional pulse type tools 

Anti-coincidence and time share pulsing avoids dead time and signal cancelling of pulse type tools 

Down hole gain control for different pipe sizes 

Rigid low noise isolator provides ruggedness and reliability 

Optional CCL, centralizing bowstrings, gamma, and neutron probe  

Temp rating: 300° F without flask/400° F with flask

Pressure rating: 20k PSI

Long spaced, focused detector: Nal crystal with photo-tube 

Short spaced, focused detector: Halogen quench Geiger tube  

Utilizes Cs-137 (or equivalent) in collimating shield

Very effective in dry or fluid filled holes 

Includes de-centralizing bowstring with carbide wear pad 

Temp rating: 225° F 

Pressure rating: 20k PSI 

Cased and open hole operation  

4" HE3 short spaced detector 

6" HE3 long spaced detector

Uses 5 Ci AmBe (or equivalent) source  

8 1/4" spacing from source to short spaced detector 

11 1/2" spacing from short spaced detector to long spaced detector

Temp rating: 300° F 

Pressure rating: 20k PSI

Rugged fiberglass mandrel with no downhole electronics 

Heavy duty lead bands 

Capacity of simultaneous 8"-16"-32"-64" E-log. Spontaneous potential and point resistance

Four or seven conductor service 

Temp rating: 350° F 

Pressure rating: 20k PSI 

Dual channel to indicate flow direction and velocity 

Minimum sensitivity: 4 FPM  

Utilizes photo transfer encoder and light source to detect impeller speed

Temp rating: 225° F 

Pressure rating: 20k PSI 

LE version uses scintillation detector with a 50 mCi AM 241 (or equivalent) source  

Temp rating: 225° F STD, 300° F optional ​

Pressure rating: 20k PSI

HE version uses Geiger Muller detector with 10 mCi Cs 137 source 

Temp rating: 350° F ​

Pressure rating: 20k PSI

Heavy duty hi-toque motor with ball screw drive 

Pressurized sample size easily changed by using different length or OD of reservoir housing 

Bottom sub encloses sample transfer valve  

Works on single conductor cable

Standard capacity: 1 liter 

Temp rating: 300° F 

Pressure rating: 5k PSI

Continuous recycle on negative voltage, requires 4 minutes for full cycle, two minutes in each direction 

Rugged hi-torque motor with ball screw drive 

Superior corrosion resistance with Nitronics 50 housing 

Standard capacity: 10CC, larger capacity available 

Temp rating: 350° F 

Pressure rating: 20k PSI 

All probes run on +120 volts @ 60mA 

High pressure and/or H2S resistant housings available 

Large volume, high-sensitivity scintillation detectors available on 1 5/8" OD tools and up ​

 *For sizes, pressure and temp ratings refer to chart on "Info and Data" page

Caliper can be utilized as a spring type centralizer above or below existing radiation tools

H2S and corrosion resistant material used throughout, including the spring material 

Motors, lead screw, shaft seals and switching circuits are eliminated using the magnetically coupled caliper 

No power is required to open or close this tool 

Advantages, besides centralizing, is logging up or down without closing springs, IN/OUT flexibility in springs gives minimal error and excellent repeatability 

Available in 3 version: 

oPulse type output ​

oAnalog type output 

oOne wire feed-thru relay option for running in conjunction with other tool types

Standard caliper available with single arm, three arm, and XY assembly.​

Heavy duty motorized arm section with a hi-torque DC motor with ball screw drive

Carbide wear pads with hard surface subs 

Optional electrode arm tips for dry-hole resistivity and RSP bands available in all models 

Electrical feed thru for stacked subs; specify single, four, or seven conductor top subs 

Optional V.C.O. pulse type caliper for single conductor service available   ​

*For sizes, pressure and temp ratings refer to chart on "Info and Data" page 

*Custom tool stacks available upon request 

Provides precise rotational positioning of lower stacked orienting tool and perforating gun 

Excellent for use in multiple completion perforating 

Shooting adapter to connect retrieveable jet perforating strings   

10 position indicator 

Temp rating: 350° F 

Pressure rating: 20k PSI

Uses a piezo-electric crystal to detect downhole audio frequency and amplitude variations due to fluid and gas movement  

10mv to 7V peak to peak output, can be hooked to external speaker

Runs stacked with a 0°-300° F linear temp probe, that generates 10 PPS per degree 

Temp rating: 300° F 

Pressure rating: 20k PSI

Comprobe utilizes ruggedized scintillation-type detectors or GM tubes for gamma ray correlation in shooting gamma ray probes. Detectors are 3-axis shock protected for longer operating life. Tool contains negative shoot-thru protection. These probes are typically combined with top or bottom mount CCL's that are modular coil and magnet assemblies with dual-diode protection. Appropriate subs are necessary looking down into the perforating guns for 1 5/8" OD and larger.  

 *For sizes, pressure and temp ratings refer to chart on "Info and Data" page

Solid state pressure transducer uses piezoresistive sensor 

2 standard pressure ranges available: 0-500 PSI and 0-10,000 PSI 

Maximum typical full scale error of .5%, typical .1% 

Maximum repeatability error of .05%  

Temp rating: 250° F 

Pressure rating: Max pressure of pressure transducer  

​

 *Custom pressure ranges available upon request

Solid state pressure transducer uses piezoresistive sensor 

2 standard pressure ranges available: 0-5000 PSI and 0-10,000 PSI 

Maximum typical full scale error of .5%, typical .1% 

Maximum repeatability error of .05% 

Temp rating STD: 250° F 

Temp rating hi-temp: 400° F 

Pressure rating: Max pressure or pressure transducer

​

*Custom pressure ranges available upon request

Although virtually all of Comprobe's logging gammas may be used for production work, these three probes are most often utilized:

1204 series (often paired with injector) 

1304 series (often paired with injector) 

1804 series (shortened version with slip-ring adaptation for production logging) 

Plug in microprocessor electronics 

Single transmitter, single receiver emulation 

On the fly down hole pulse or sine calibration signal 

Different isolator frequencies available 

Interfaces with additional pulse type tools 

Anti-coincidence and time share pulsing avoids dead time and signal cancelling of pulse type tools 

Down hole gain control for different pipe sizes 

Rigid low noise isolator provides ruggedness and reliability 

Optional CCL, centralizing bowstrings, gamma, and neutron probe  

Temp rating: 300° F without flask/400° F with flask

Pressure rating: 20k PSI

16" center to center, typical source to detector spacing 

6" HE3 detector 

Open or case hole porosity survey

7/8"-2 1/8" OD probes may use a 1.2 Ci AmBe source for open hole only

1"-3 1/4" OD probes may use a 3 Ci AmBe source for cased or open hole ​

*For sizes, pressure and temp ratings, refer to chart on "Info and Data" page

1 1/4" probe 

Detector: Nal Crystal with photo-tube  

Uses 50 mCi Am 241 source (or equivalent)   

Temp rating: 225° F 

Pressure rating: 5k PSI   ​ 

2 1/8" or bigger ​

Same construction as dual spaced except no short spaced detector  ​

Temp rating: 225° F 

Pressure rating: 20k PSI

Various lengths and OD's available 

Feed thru can be single or multi-conductor 

Typical material is 303 SS 

Detects minute changes in thermal gradients associated with water communication or gas movement over 0-300° F 

Pressure rating: 5k PSI or 15k PSI depending on model 

High pressure rating and/or H2S resistant housings available 

All models incorporate a fast response platinum sensor