Oil and gas
The STRYDE Nimble System™
Zimbabwe, South Africa
A case study demonstrating how STRYDE's nodal seismic systems enabled Polaris Natural Resources to conduct an efficient and cost-effective seismic survey for oil and gas exploration in Zimbabwe.
Polaris Natural Resources
An Upstream Exploration and Production Company (Invictus Energy)
To explore the petroleum potential of a Frontier Basin to pinpoint future drilling locations.
Oil and gas
Frontier Basin in Zimbabwe (Cabora Bassa)
Lightly vegetated, flat savanna land
A 2D seismic survey with swath shooting, by shooting 1 line and recording 2, to create pseudo seismic lines between receiver lines. Shot 38,400 shot points on 31 lines.
Seismic vibrators (Vibroseis)
38,400 seismic traces per kilometre
Because the survey location was deemed as an environmentally sensitive area, the team required an Environmental Impact Assessment (EIA) to be completed prior to the survey being sanctioned, meaning that the survey had to adhere to strict environmental footprint management conditions.
The survey size spanned over 800KM, which meant large volumes of seismic equipment were required to complete the survey effectively.
The survey was conducted in a remote location, in a complex terrain causing logistical challenges.
The window of opportunity for shooting the survey was weather dependent, resulting in the survey having to be shot within a tight timeframe.
As this was a frontier, unexplored basin, the Upstream Exploration and Production company required a solution that was low cost, without compromising the quality of the output dataset.
STRYDE’s Nimble System™ was deployed to Polaris in Zimbabwe and consisted of 9,540 STRYDE Nodes™, 4 Nests and server units, the STRYDE nodal operating system (STRYDE’s charge, harvest, and node management system), backpacks, planting devices and nodal holders (magazine strips and trays), navigator tablets, initialisation devices™, and field support personnel
2D lines, the pseudo-2D lines were created in the North, South direction by recording 2 lines when the team were shooting a second line, which was created during processing – a highly innovative approach to seismic acquisition, made possible by STRYDE’s low-cost continuously recording nodes.
The 2D survey is now complete and the high-density 2D seismic data has been harvested and sent for processing and interpretation in Calgary.
The data gathered during this acquisition will enable the Upstream Exploration and Production Company to pinpoint the exact location for the basin opening Muarabani-1 well, which is scheduled to be drilled in 1H 2022.
The seismic system provided by STRYDE unlocked significant cost savings related to the number of people required, equipment needed, logistics, vehicles, and project time when compared to competitor Nodal systems
Utilising the world’s smallest and lightest nodes, the team were able to carry 90 nodes per person by foot, resulting in being able to deploy and retrieve thousands of nodes per day and shoot the survey in a much more efficient manner, which reduced the project timeline significantly
Continuously recording nodes allowed multiple receiver lines to be generated from a single shot line, resulting in acquisition of high-resolution and increased density 2D lines and deep structure data that provided the insights required to make informed drilling decisions and to help plan future surveys
STRYDE’s Nimble system™ (9,540 nodes, navigator tablets, initiation devices, backpacks, the nodal operating software, and containers) were delivered on-site within 5 days of the contract agreement, assuring that the project started on-time
The nodes' miniature size and lightweight traits allows for up to 90 nodes to be transported and handled by one person on foot, minimising the need for line clearing and land disruption
The unique characteristics of the Nimble nodal system™ reduces the number of people and vehicles required to deploy and retrieve the nodes on site, in turn, reducing the acquisition contractor’s exposure to risk