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Oil and Gas Exploration and Production Monitoring

Production Logging


Distributed fiber optic sensing technology is becoming a widely recognized tool in the oil and gas production logging industry. It enables the collection of high-resolution distributed acoustic and temperature data using optical fibers, efficiently gathering dynamic information on parameters such as flow throughout the production process with minimal or no human intervention. Compared to traditional techniques, distributed fiber optic sensing technology facilitates more efficient interventions, faster remediation, less downtime, reduced costs, and lower carbon emissions, thereby maximizing site productivity. Distributed acoustic sensing (DAS) technology can capture the true acoustic field (amplitude, frequency, and phase) at all points along the optical fiber. Combined with distributed temperature sensing (DTS) technology, it can quantitatively analyze well fluid temperature (and temperature-related parameters), fluid flow rate, and profile, quickly identifying complex and dynamic downhole conditions.

 

In-Well Seismic Exploration and Acquisition


When optical cables are permanently installed in wells, DAS technology allows for seismic exploration and data acquisition without stopping production or intervention, achieving full-well coverage and significantly improving operational efficiency and reducing costs, which traditional borehole seismic exploration methods cannot achieve. As a true acoustic sensor, ixDAS’s high phase fidelity and linear response enable the use of many traditional seismic signal processing methods, integrating DAS seismic data processing into existing acquisition and analysis workflows. This technology is particularly suited for offshore vertical seismic profiling (VSP) due to the unique nature of offshore oilfield operations. Furthermore, the natural advantage of long-term deployment of optical cables makes DAS-based four-dimensional (3D + time-lapse) seismic monitoring a crucial technique for reservoir monitoring. By analyzing time-varying characteristics of rock properties using methods such as seismic reflection feature analysis near the well, time-lapse seismic PP imaging, cross-well fault scanning, and ambient noise tomography, it provides insights into the factors causing reservoir changes, supporting oil and gas reservoir research and enhanced recovery.