Optical Televiewer

Transcript

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: • Image resolution : 360 to 1440 pixels / circumference ( user definable) • Data rate : 1500 Kbps • Colour resolution: 24 bit RGB • Sensor: 1280x1024 CMOS image sensor • Structural log and Image data format: : Bitmap files • Structural and orientation data format..: ASCII files Log Parameters: • 360° oriented optical Image • 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 WEB SITE: E-MAIL: 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: • Frequency: 1.5 MHz • Beam angle: 3º conical • Rotation speed: up to 20 rev/sec • Sampling density : 90, 120, 180 or 360 per revolution • Acquisition sampling rate: 100 nS • Gain: 0 to 60 dB in 1 dB steps or Automatic Gain Control (AGC) • Acquisition resolution: 8 bits Deviation Subsystem: • 3-axis magnetometer - Azimuth accuracy: ±2.5º • 3-axis accelerometer - Inclination accuracy: ±0.4º Log Parameters: • 360° oriented Travel Time Image ( 12-bit resolution / 100 ns per bit ) • 360° oriented Amplitude Image • 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 − − − − − − − − − − − − − − 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 − − − − − − − − − 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 − − − − − − − − 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: