USBA
The Acoustic Borehole Logging Equipment –USBA, a new generation of acoustic borehole logging tools, which allows full acoustic waveform analysis and logging in cased and open well bores. The multipol acoustic log service is a full wave monopole, dipole and quadropol logging service. The 8-segment cement bond tool allows the high resolution detection of bad binding channels in the cementation.
USBA – Segment (SCBL)
The USBA-Segment incorporates two high power transmitters and one group of 4 piezo ceramic receivers. This logging tool measures the cement binding (cement – casing and cement – formation) in 8 angular segments around the casing. The USBA SCBL gives you full wave form logs in 8 channels to determine the cementation in 8 segments. Per each segment the full wave for the amplitude and the arrival time will be logged.
Applications
- Provide quantitative analysis of cement bond to the casing in 8 segments and formation
- Provide 360° cement bonding evaluationn
- Identify intervals of uniform bonding and detect channels lacking cement
USBA – Multipole (MAL)
The USBA-Multipole incorporates two high power transmitters and one group of 4 piezo ceramic receivers, improving data quality in both openhole and through-casing applications. The MAL raw data are processed to obtain wave-form amplitude, slowness and arrival time. These data are incorporated into advanced log analysis programs to evaluate fractures and lithology, fluid contact and rock properties. This logging tool allows a full wave monopole, dipole and cross dipole logging service, ensuring the complete acquisition of quality compressional (Pwave), shear (S-wave) and stonley-wave in a single logging pass.
Applications
- Porosity, lithology and permeability determination
- Determine distribution of rock mechanical properties
- Predict orientation of natural fractures
- Estimate relative permeability
- Determine formation strength parameters using compressional and shear wave travel times
- Through casing acquisition of shearwave(S-wave), compressionalwave (P-wave) and stonleywave data
USBA-Combination (SCBL and MAL)
This tool integrates the Segmented Cement Bond Tool and the Multipole Acoustic Log Tool.
Technical Specification Logging Equipment
| USBA-Segment | USBA-Multipol | USBA-Combination | |
|---|---|---|---|
| SCBL | MAL | SCBL und MAL | |
| Maximum ratings | |||
| Maximum pressure | 100 Mpa 14493 psi | ||
| Operating temperature | 150 °C (297 °F) | ||
| Dimensions | |||
| Diameter | 80 mm / 3,14 in | ||
| Length | 4 m / 13,11 ft | ||
| Weigth | 67 kg / 147,63 lb | ||
| Max. length for transportation | 1,8 m / 5,90 ft | ||
| Logging speed | |||
| min. | 5 m/min 16,39 ft/min | ||
| max. | 20 m/min 65,57ft/min | ||
| Centralizer | |||
| 2 centralizer at each tool | each centralizer with 8 springs (exchangeable) | ||
| Cable | |||
| Conductors | 3-wire or mono conductor | ||
| Cable length | 6500 m 21311 ft | ||
| Cable head | 60 mm RGW (adapters available) | ||
| Borehole diameter | |||
| min. | 100 mm / 3,92 in | ||
| max. | 300 mm / 11,76 in | ||
| Transmitter | |||
| Typ | magnetostrictive | ||
| Quantity | 2 | ||
| Resonance frequency of transmitter | 18 kHz | ||
| Frequency range | 5 – 30 kHz | ||
| Receiver | |||
| Typ | piezoceramic | ||
| Frequency range | 1 – 50 kHz | ||
| Quantity | 1 groupe | 1 Groupe | 2 Groupe |