Clarion™ Optical Seismic Instrumentation
Weatherford’s Clarion seismic system is an advanced, multi-channel optical sensing system that enables reliable, permanent in-well seismic applications. The instrumentation is compatible with the Clarion optical seismic accelerometer and combines state-of-the-art optical multiplexing with high-performance seismic recording and flexible interfacing to most conventional seismic acquisition systems. The instrumentation is located at the surface and contains all the electronics for the wellsite optical seismic system.
Applications for the Clarion Optical Seismic Instrumentation
- Providing permanent seismic monitoring of onshore and offshore wells
- Providing a link between surface seismic and well information
- Obtaining detailed time-lapse reservoir imaging near the well to track fluid movement and help locate bypassed hydrocarbons
- Imaging thermal fronts and re-injecting waste products, such as carbon dioxide
- Calibrating time-lapse (4D) surface seismic response to better process and understand the data
- Continuously monitoring stress changes in the reservoir to help delineate faults and understand flow paths
- Monitoring compaction that can induce well or casing damage
- Monitoring hydraulic fracturing and stimulation to determine fracture growth during operations
Clarion Optical Seismic Instrumentation Features, Advantages, and Benefits
- Use of Clarion optical seismic instrumentation reduces uncertainties and risk in exploration and production.
- Uniquely packaged, surface-installed, opto-electronic system with multi-wavelength laser source, combined with all-passive fiber Bragg grating (FBG)-based interferometric in-well sensors, enables high-performance demodulation of multiple in-well seismic signals.
- Broadband, wide dynamic range, and low distortion enable high-fidelity seismic data acquisition, covering a wide range of in-well seismic applications. This level of sensitivity contributes to better-informed reservoir management decisions.
- Surface instrumentation accommodates up to 32 optical channels, plus 4 auxiliary reference channels, for pseudo-continuous recording (no inter-record gap); precise time synchronization and accuracy; and storage of simultaneous in-well pressure/temperature (P/T) data in the digital record header. These advantages facilitate post-processing of integrated sensor data.
- Continuous analog data output interfaces to most conventional seismic recording systems for seamless data handoff to third parties.
- Network-capable Windows® PC-based control software, built-in noise monitoring, and data-display functions enable local and remote system operation, control, data quality control, and data access for operational flexibility, efficiency, and data sharing.
- Industry-standard 19-in. (483-mm) rack-mount portable or fixed cabinet accommodates temporary or permanently installed configurations for flexibility and ease of installation—onshore or offshore—and easy integration into existing control-room facilities or rugged use in temporary locations.
- Complex, multi-channel electronic hardware and software are surface based, not exposed to the harsh wellbore environment, so that system components and performance do not degrade over time, ensuring life-of-field reliability and on-demand data acquisition.
Clarion Optical Seismic Instrumentation Sample Configuration
Clarion Optical Seismic Accelerometer
Specifications of the Optical Seismic Accelerometer
Clarion Optical Seismic Instrumentation
Specifications of the Optical Seismic Instrumentation
Clarion Seismic Sensing Station and Deployment System
Specifications of the Seismic Sensing Station and Deployment System