The modular P-Cable system is customizable and has been utilized in many marine seismic imaging applications to date.

Applications & Industries Who Use
Ultrahigh Resolution P-Cable 3D Data

P-Cable UHR3D data has been utilized by both industry majors and leading academic institutions for a wide range of imaging applications. As a leading marine seismic company, NCS Subsea brings value and new knowledge to industries such as:

  • Reservoir Imaging and Exploration
  • Site Surveys and Geohazards
  • Marine Geology
  • Field Development
  • 4D Reservoir Monitoring and Investigations
  • CCS: Carbon Capture and Storage
  • OWF: Offshore Wind Farm and Nuclear Power Facilities

The P-Cable system has the proven ability to image below seafloor multiples by applying modern near-offset multiple suppression techniques such as 3D SRME. In these scenarios, local geology, water depth and source strength are all factors in determining optimal imaging depth.

Imaging of shallow gas in the Barents Sea. Amplitude map of top gas (top) and inline (bottom) including glacial deposits (1), URU (2), westward dipping Paleogene sediments (3) and shallow gas (4). Images courtesy University of Tromsø and Lundin Norway.

Reservoir Imaging

Detailed marine seismic imaging is key to the successful discovery and development of hydrocarbon reservoirs. Our 3D marine seismic imaging technology helps resolve the reservoir geology and distribution of hydrocarbon fluids at unprecedented seismic resolution. In recent years, we have conducted several proprietary, multi-client surveys on the Norwegian Continental Shelf, including the Peon gas discovery in the North Sea and the Wisting oil discovery in the Barents Sea.

ACOUSTIC IMPEDANCE INVERSION

Acoustic impedance inversion of P-Cable UHR3D data with gamma ray log from the Hanssen Well on the Wisting discovery. Note the unprecedented resolution of the P-Cable inversion, which clearly highlights all three fluid phases along the target formation. Image courtesy OMV.

Reservoir Imaging

Detailed marine seismic imaging is key to the successful discovery and development of hydrocarbon reservoirs. Our 3D marine seismic imaging technology helps resolve the reservoir geology and distribution of hydrocarbon fluids at unprecedented seismic resolution. In recent years, we have conducted several proprietary, multi-client surveys on the Norwegian Continental Shelf, including the Peon gas discovery in the North Sea and the Wisting oil discovery in the Barents Sea.

ACOUSTIC IMPEDANCE INVERSION

Acoustic impedance inversion of P-Cable UHR3D data with gamma ray log from the Hanssen Well on the Wisting discovery. Note the unprecedented resolution of the P-Cable inversion, which clearly highlights all three fluid phases along the target formation. Image courtesy OMV.

Site Surveys and Geohazards

Marine environments represent engineering challenges, introducing risks and uncertainties. Ultrahigh Resolution (UHR) 3D seismic imaging is essential for accurate mapping of shallow gas, weak layers, faults, and other potential subsurface geological hazards that impact offshore industry activities such as drilling operations; platforms, and offshore wind farm construction; and pipeline surveys.

Click here to review more of our Marine Geophysical Site Survey capabilities.

HI-RES CONVENTIONAL 3D

P-CABLE UHR3D

Comparison of conventional 3D (left) and P-Cable UHR3D (right) seismic data for geohazards detections. The P-Cable UHR3D clearly delineates the mass transport complexes above the first casing shoe for a proposed well.

Marine Geology

Leading questions in marine geology, particularly in the structural domain, can be answered by improved marine seismic imagery. Geoscience companies and geophysical companies will also see vast improvements in their data with UHR 3D seismic imaging. The P-Cable system was developed by researchers in need of an affordable 3D marine seismic system for core-log-seismic integration and marine geological and geophysical surveys. Three-dimensional P-Cable data is capable of resolving meter-scale objects with outcrop-like resolution.

Mud diapirism in Pleistocene deposits on the Norwegian continental shelf.

Field Development

Detailed knowledge of reservoir properties is key for successful field development. UHR3D seismic allows for delineation of thin beds; imaging of smaller scale faulting; improved visualization of fluid contacts and spill points; leakage and seal integrity analysis. The uplift in resolution can also be important for imaging small features contributing to the interpretation depositional environment and estimating net to gross. The near zero-offset data allows for a precise well-to-seismic tie. P-Cable UHR3D provides the resolution you need for better estimates of volumes in place and tools for placing wells for production.

A 300 km2 P-Cable field development survey was acquired on the Wisting license in 2016. The data represented a quantum leap in both vertical and horizontal resolution and resolved features of the reservoir not imaged before. In turn, this was an important contributing factor for the increase in the reserve estimates. Initial studies of the P-Cable data increased the reserve estimate by more than 30% to 330 boe. After detailed studies, the reserve estimate was again increased in early 2019 to 440 boe. Images courtesy OMV and VBPR.

WELL LOG

CONVENTIONAL

P-CABLE

A 300 km2 P-Cable field development survey was acquired on the Wisting license in 2016. The data represented a quantum leap in both vertical and horizontal resolution and resolved features of the reservoir not imaged before. In turn, this was an important contributing factor for the increase in the reserve estimates. Initial studies of the P-Cable data increased the reserve estimate by more than 30% to 330 boe. After detailed studies, the reserve estimate was again increased in early 2019 to 440 boe. Images courtesy OMV and VBPR.

WELL LOG / CONVENTIONAL / P-CABLE

4D (Time-Lapse) Reservoir Monitoring

Time-lapse (4D) marine seismic imaging surveys and time-lapse seismic processing are important for the monitoring and analysis of sub-surface deformation and fluid migration both for the offshore E&P industry and for academic applications. Time-lapse P-Cable data have been collected in areas with gas hydrates and focused fluid flow, as well as over-producing deep-water oilfields, and have proven very useful for detecting subsurface changes over time and for reservoir monitoring and management.

Baseline, Monitor, dRMS (20m gate) and NRMS (500m gate) volumes through two water injection wells that penetrate the reservoir at 4,200 m depth.

CCS: Carbon Capture and Storage

Sequestration of CO2 requires detailed knowledge of the structure and properties of the target geological formation and the regional seal. NCS SubSea’s technology can be deployed to characterize storage reservoir properties; image small scale faults that may compromise seal integrity; identify potential gas migration paths; and monitor CO2 gas leakage.

Free gas trapped in Cretaceous sediments, Barents Sea.

OWF: Offshore Wind Farm
and Nuclear Power Facility Applications

P-Cable UHR3D seismic data acquired with high-frequency sources such as sparker or boomer offers unrivaled marine seismic imaging of subsurface hazards for engineering-scale studies and infrastructure safety and represents a step-change in geohazard evaluation. Broadband 3D imaging of the subsurface ensures the accurate delineation of subsurface hazards from water-bottom down to a few hundred meters or more below seabed with unprecedented resolution and image quality. P-Cable UHR3D data, in combination with ancillary measurements such as multibeam echo sounder, side-scan sonar, sub-bottom profiler, and magnetic gradiometer, provides an unrivaled ability to image:

  • Seafloor bathymetry at a level of detail comparable to shipborne multibeam echo sounder data
  • Seafloor and sub-seafloor infrastructure
  • Small scale faults and diffractors, including steeply dipping fault planes
  • Extremely detailed seismic-stratigraphic information from the seabed to several hundred meters below seabed, including thin beds and pinch outs
  • Free gas in the subsurface, including gas chimneys, gas clouds, trapped free gas, and active gas expulsion features
  • Gas hydrates, both indirectly using free gas underneath the hydrates (BSR's), and possibly directly in favorable circumstances using detailed amplitude analysis
Extracted horizon image from the P-Cable UHR3D survey in San Luis Obispo Bay, California. This P-Cable UHR3D survey was conducted to assess fault slip rates just offshore from the DCPP nuclear power generation facility. The acquisition system consisted of 14 streamers, 50 meters in length with an AP3000 boomer energy source firing every 3.125 meters. The resulting bin size was 3.125 x 3.125 meters with 8-fold subsurface coverage and a sampling interval of 0.25 milliseconds, which enabled vertical resolution on the order of 1 foot. Several previously unidentified faults, labeled as “unnamed faults,” were discovered in this well-established geohazard field due to the high resolution of the P-Cable data collected. Data courtesy PG&E.