Our services are complete, covering all the phases required to convert geophysical data into value for our clients. Reach Subsea performs the geophysical studies that lead to overall monitoring strategies; plans and executes operations and provides support to integrate data in interpretation workflows.
gWatch: 4D gravity
Oil and gas production leads to changes in the mass distribution in the subsurface. Hydrocarbon extraction, water flowing in from surrounding aquifers and injection of gas and water alter the mass of fluid present in the rock pores.
Seafloor subsidence monitoring
Production of hydrocarbons from offshore reservoirs often leads to subsidence of the seafloor. The measurement of how this subsidence distributes laterally is a powerful geophysical tool for understanding the dynamics of the reservoir.
DepthWatch for seismic nodes
Measuring relative depths is a complex physical problem. Lateral, vertical and temporal variations in water properties limit the accuracy of methods based on pressure or travel time of sound waves. Sensor drifts and sensitivity to external conditions introduce further operational challenges. As a result, the vertical position of seismic nodes is typically reported by OBN contractors with accuracies in the order of a few meters.
Wellwatch: Injection integrity monitoring
Real-time seismic monitoring is used to improve decision-making and safety during well drilling and injection operations. For those applications, a short reaction time is required. Reach Subsea's integrated solution to process seismic data and provide the required interpretation capability in real-time.
Drillwatch: Well drilling, under controll
Drilling wells offshore is a costly and complex operation. Conventional methods for tracking the drill bit during drilling suffer from uncertainties that increase with the length of the well. Imperfections in subsurface models further complicate navigation of the drill bit relative to the target rock formations and hazardous areas.
Real-time seismic monitoring
Real-time seismic monitoring is used to improve decision-making and safety during well drilling and injection operations. For those applications, a short reaction time is required.
Unlocking enhanced value in 4D Seismic with Reach Subsea’s DepthWatch technology: insights from Reach Subsea and Shell
The acquisition of time-lapse subsurface imagery is instrumental in pinpointing untapped reserves and refining the extraction process. Among the most commonly employed technologies for subsurface imaging is 4D seismic. The integration of Reach Subsea’s DepthWatch service into 4D seismic surveys significantly enhances imaging capabilities, all while incurring only minimal additional costs for clients. Moreover, this […]
Reservoir monitoring surveys using gWatch at several Equinor-operated gas fields
Reach Subsea, offering high-quality solutions and technology to clients in need of ocean data and services, recently announced a notable accomplishment. The company has been awarded a contract encompassing surveying, monitoring, and subsea services, provided as an integrated turn-key solution. This milestone further marks the beginning of a gravity and seafloor deformation survey campaign that covers several Equinor-operated gas fields and is scheduled to commence in July this year.
Reach Subsea sets a new milestone for accuracy and efficiency of gravimetry surveys with Shell Norge at Ormen Lange Field
Reach Subsea completed the 7th gWatch survey for Shell Norge and delivered outstanding quality gravimetry and subsidence measurements at the Ormen Lange field.