Datasheet

Logging Sondes
GeoVista
Optical Televiewer
The Optical Televiewer provides continuous logs of oriented, high resolution unwrapped
video images of borehole walls. Further processing allows for the computation and
display of standard information on fractures and other geological features.
Unlike the Acoustic Televiewer, the Optical Televiewer can be run in both air filled and
(clear) water filled holes.
The sonde can be supplied with a standard Geovista logger or with only a data
modem and acquisition software if no other Geovista sondes are required at the time.
The Imaging Modem is a communication interface for the acoustic and the optical
imaging tools. It comes fitted with a USB interface and image data acquisition
software. The high speed version allows for higher communication speed, of up to
312 Kbits/sec for wirelines up to 1500 meter and 208 Kbits/sec for wirelines up to
2000 meter.
Specifications:
Dimensions & Weight: Length: 1.63 m : Diameter: 52 mm max.; Weight: 5 kg
Optical Subsystem:
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Image resolution : 360 to 1440 pixels / circumference ( user definable)
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Data rate : 1500 Kbps
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Colour resolution: 24 bit RGB
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Sensor: 1280x1024 CMOS image sensor
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Structural log and Image data format: : Bitmap files
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Structural and orientation data format..: ASCII files
Log Parameters:
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360° oriented optical Image
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Borehole azimuth and dip
Operating Conditions : Fluid (clear) and air filled boreholes; Max. Pressure 100 bar; ext. to 150 bar
Max. Temp.: 50ºC
Borehole Diameter Range: 57 to 300 mm , depending on conditions
Typical Logging speed: 2.5m/min with 720 pixels horizontal and 1 mm vertical resolution.
Geovista reserve the right to change the products’ list and specificaons without prior noce
UNIT 10,CAE FFW T BUSINESS PARK,GLAN CONW Y, LL28 5SP,UK
P H O N E : +44 (0)1492 57 33 99
F A X : +44 (0)1492 58 11 77
h t t p : / / w w w. g e o vi s t a . c o . u k
g e o v i s t a @ g e o vi s t a . c o . u k
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Logging Sondes
GeoVista
Acoustic Borehole Televiewer
The Acoustic Borehole Televiewer provides continuous logs of oriented, unwrapped
images of borehole walls. Further processing allows for the computation and display of
standard information on fractures and other geological features.
Unlike the Optical Televiewer, the Acoustic Televiewer can be run in both clear and
opaque mud.
The sonde can be supplied with a standard Geovista logger or with only a data
modem and acquisition software if no other Geovista sondes are required at the time.
The Imaging Modem is a communication interface for the acoustic and the optical
imaging tools. It comes fitted with a USB interface and image data acquisition
software. The high speed version allows for higher communication speed, of up to
312 Kbits/sec for wirelines up to 1500 m and 208 Kbits/sec for wirelines up to 2000 m.
Specifications:
Dimensions & Weight: Length: 2.10 m ; Diameter: 42 mm; Weight: 10 kg
Acoustical Subsystem:
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Frequency: 1.5 MHz
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Beam angle: 3º conical
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Rotation speed: up to 20 rev/sec
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Sampling density : 90, 120, 180 or 360 per revolution
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Acquisition sampling rate: 100 nS
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Gain: 0 to 60 dB in 1 dB steps or Automatic Gain Control (AGC)
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Acquisition resolution: 8 bits
Deviation Subsystem:
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3-axis magnetometer - Azimuth accuracy: ±2.5º
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3-axis accelerometer - Inclination accuracy: ±0.4º
Log Parameters:
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360° oriented Travel Time Image ( 12-bit resolution / 100 ns per bit )
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360° oriented Amplitude Image
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Borehole azimuth and dip
Operating Conditions : Fluid filled boreholes; Max. Pressure 200 bar;
Max. Temperature: 70ºC
Borehole Diameter Range: 50 to over 400 mm , depending on borehole fluid conditions
Geovista reserve the right to change the products’ list and specificaons without prior noce
UNIT 10,CAE FFW T BUSINESS PARK,GLAN CONW Y, LL28 5SP,UK
P H O N E : +44 (0)1492 57 33 99
F A X : +44 (0)1492 58 11 77
h t t p : / / w w w. g e o vi s t a . c o . u k
g e o v i s t a @ g e o vi s t a . c o . u k
WEB SITE:
E-MAIL:
Camera Systems
GeoVista
Geovista supply a range of colour borehole inspection cameras featuring high
resolution and high sensitivity CCD sensors.
All cameras operate on co-axial logging cables and on short lengths of
standard mono-conductor cables. As a result, the cameras can be run on the
same winch as the logging sondes.
Dual Camera
The Dual Camera sonde offers the convenience of both
downhole and sidewall viewing facility by switching between
two individual cameras, one directed axially and the other
directed radially with 360º infinite rotation.
In addition, this sonde can be fitted with a compass for image
orientation.
The side view objective is fitted with an array of white, high
luminosity LED lights. Downhole lighting is supplied with either a
frontal light head or a ring light for larger diameter boreholes.
Specifications
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Image sensor: 1/3” CCD
Resolution: 700 TV lines / 976 (H) x 582 (V) pixels
Min. illumination: 0.01 Lux
Lens size: 6 mm and 2.6 mm (or as required)
Electronic Iris, Remotely controlled focus
White LED integral lighting for side-view objective
Removable 80W Halogen Ring Light (∅135 mm)
Removable LED Ring Light (∅80 mm)
(Optional) Detachable LED Frontal light
External Diameter: 72 mm
Length: 125 cm
Weight: 17 kg (with ring light)
Temperature rating: 60ºC
Pressure: 200 bar
Geovista reserve the right to change the products’ list and specificaons without prior noce
UNIT 10,CAE FFW T BUSINESS PARK,GLAN CONW Y, LL28 5SP,UK
P H O N E : +44 (0)1492 57 33 99
F A X : +44 (0)1492 58 11 77
h t t p : / / w w w. g e o vi s t a . c o . u k
g e o vi s t a @ g e o v i s t a . c o . u k
WEB SITE:
E-MAIL:
Camera Systems
GeoVista
Axial Viewing Cameras
The Axial Viewing Camera sonde offers the convenience of a smaller diameter , a lower price, and a wide angle lens to maximise the frontal field of vision.
With a 0.01 lux sensitivity sensor and frontal light head, this camera is suitable for inspections in small diameter wells or in wells with small diameter access ports.
Specifications
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Image sensor: 1/3”CCD
Resolution: 550 TV lines / 795 (H) x 596 (V) pixels
Min. illumination: 0.01 Lux
Lens size: 2.6 mm (or as required)
Automatic Iris / Fixed focus
White LEDs integrated ring light
Max.External Diameter: 42mm
Length: 66 cm
Temperature rating: 60ºC
HiTemp Camera
The HiTemp Camera sonde can be run in wells with temperatures of up to
100°C. This is an axial viewing sonde with a single wide- angle objective.
The HiTemp camera is available in colour for up to 1500m of cable, and
in Black & White for up to 2000m of cable.
Specifications
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Image sensor: 1/3” CCD
Resolution: 700 TV lines / 976 (H) x 582 (V) pixels
Frame rate: 30 frames /second
Min. illumination: 0.01 Lux
Lens size: 2.6 mm
Automatic Iris / fixed focus
Max External Diameter: 60 mm
Temperature rating: 100ºC / Pressure: 200 bar
Camera Control Unit
The camera control panel comes in a transit case,
and includes a monitor and a video keyboard.
Video recording can be done either on a separate
DVD recorder or on a suitable laptop PC .
For vehicle mounted systems, the control panel comes in a
compact enclosure with a separate monitor and optional
DVD recorder.
Image Orientation and Borehole Inclination
An option to measure and display image orientation and borehole
inclination on the video monitor is available with the Dual Camera .
Geovista reserve the right to change the products’ list and specificaons without prior noce
UNIT 10,CAE FFW T BUSINESS PARK,GLAN CONW Y, LL28 5SP,UK
P H O N E : +44 (0)1492 57 33 99
F A X : +44 (0)1492 58 11 77
h t t p : / / w w w. g e o vi s t a . c o . u k
g e o vi s t a @ g e o vi s t a . c o . u k
WEB SITE:
E-MAIL: