Sigma Cubed’s microseismic group delivers borehole, surface, and fiber optic (DAS) microseismic acquisition to help companies answer the question of what completions strategy works best and to refine their earth model to have the most accurate understanding of the subsurface, especially at the reservoir level. We use the longest arrays in the industry, resulting in quality signal extraction, more events, longer monitoring distance, and better geometric coverage.
Operators wanting to acquire downhole microseismic data can utilize Sigma Cubed’s borehole seismic imaging services. Geophones are deployed in monitoring wells using wireline units. Depending on layout of wells and client project goals, the geophone arrays can be deployed in as a WAVE™ Array (Wide Aperture Vertically Extended Array) and/or horizontal section, including a Split Array™ with a combination of a horizontal and a vertical array in the same monitoring well.
Sigma Cubed’s WAVE™ Arrays are the wideset aperture array in the industry, running up to a 3,600’ aperture, and typically with 40+ geophones in a single array. These arrays can also be configured as a Split Array™. The long array length coupled with the Geospace DS and DW 150 Slimhole 3C Acquisition System means quality signal extraction, more events, longer monitoring distance, and better geometric coverage.
Sigma Cubed works with clients on survey design to recommend monitoring wells and tool depths that will optimize listening distances. Finite difference modeling as well as 2-point ray tracing is performed to provide an understanding of waveform complexities. Additionally, Sigma Cubed has an extensive database of magnitude v. distance plots in several basins which are used to help consider offset coverage for monitoring wells.
• Long reach 24,000’ tractored lateral array
• Multi-level Split Array™
• Perforation timing acquisition
• HTHP in multiple observation wells
• Self-contained check shot capability with short notice call-out
• High channel count Regular, Star, Shallow Grid, and Patch surface array
• Retrievable and permanent Fiber DAS for microseismic
• Processing of microseismic DAS with downhole and surface processing
• Integration of flow/strain DAS with microseismic interpretation