Integrated Seismic Data Processing, Advanced Imaging and AVO Analysis

PRIMA is a multi-function exploration software suite that seamlessly incorporates a seismic data processing and imaging system with pre-stack AVO analysis and interpretation capabilities. PRIMA combines effective analysis tools, robust algorithms, and flexible resource optimization tools that allow you to quickly and accurately process and analyze your seismic data. PRIMA was specifically designed to exploit the advantages of cluster computer environments and supports both 64-bit and 32-bit systems. Whether working on a prospect level project or a large regional seismic survey, PRIMA is scalable to meet your needs. PRIMA was built for “user friendliness” thereby freeing the user to concentrate on improving results without the administrative overhead often associated with advanced software. PRIMA was created to fill the voids in existing interpretation systems. PRIMA is integrated with other geoscience applications using direct links and the OpenSpirit™ integration framework.  

Pre-Migration 2D/3D Processing

From field tapes through preprocessing for pre-stack migration, PRIMA provides a seamless solution.

• Navigation Merge
• Shot & Receiver Geometry Database & Statistical Analysis
• Statistical Noise Analysis & Attenuation
• Surface Consistent Amplitude/Shot Balance
• Swell Noise Attenuation
• Adaptive P-Z Summation
• Multi-Vessel Dynamic Correction
• Q Estimation & Correction
• Hyperbolic Radon Demultiple
• High Resolution Radon (Adaptive High Frequency)
• SRME (Surface Related Multiple Elimination)
• ...and more

 

Advanced Time and Depth Imaging

PRIMA offers a variety of 3D pre-stack time and depth migration algorithms to address the most complex imaging problems. Imaging solutions include Kirchhoff pre-stack time and depth migration and shot domain Wave Equation 3D pre-stack depth migration.

Kirchhoff 3D Pre-Stack Time Migration

• Calculates curved rays traveltimes providing 6th order accuracy
• Imaging beyond 90 degrees
• Flexible anti-aliasing control
• No memory limitation using large velocity models
• Complete control of output including, inlines, crosslines, oblique lines and offset ranges
• Output frequency specified as a function of time
• True amplitude preservation
• Supports anisotropic imaging

Kirchhoff 3D Pre-Stack Depth Migration

• Imaging beyond 90 degrees
• Calculates multi-valued curved ray traveltimes using wavefront reconstruction
• Complete control of output including, inlines, crosslines, oblique lines and offset ranges
• No memory limitation using large velocity models
• Can use multiple travel time files for a single migration job

Wave Equation 3D Pre-Stack Depth Migration

• Shot domain-based
• Up to 90 degrees dip response
• Uses exact-unsmoothed velocity model
• Common angle of incidence image gathers with optional nonlinear offset binning
• Minimal operator noise as compared to Kirchhoff migrations
• Addresses multi-arrival problems inherent with many ray path-based Kirchhoff migrations

 

Gather Conditioning

Proper data conditioning is crucial to successful AVO analysis. PRIMA includes the necessary tools.

• RVEL: High-resolution, non-semblance-based, automatic residual velocity updating
• XMO: Automatic high-order travel-time based gather flattening
• Residual noise rejection, demultiple, offset dependant scaling
• Point AVO with compensation for wavelet stretch and offset-dependent tuning
• Stable 3-term linear regression for AVO parameters (A,B,C)
• Overburden correction based on A-B joint statistics
  

 

Pre-Stack Analysis

Successful use of pre-stack analytical techniques require:

• Accurate high-quality pre-processing (PRIMA Pre-Migration Processing)
• High resolution & amplitude preserving imaging (PRIMA Pre-Stack Imaging)
• Post migration gather & attribute conditioning (PRIMA Gather Conditioning)
• Target oriented angle stacks (PRIMA Pre-Stack Analysis)
• AVO attributes and derivatives (PRIMA Pre-Stack Analysis)
• Effective tools for data evaluation & analysis (PRIMA Pre-Stack Analysis)

Pre-Stack Interpretation and AVO Analysis

• Provides capabilities seismic other interpretation systems cannot effectively perform
• Provides a quick method for looking at pre-stack gathers associated with full and partial stacks
• Allows for interpretation of both post-stack and pre-stack horizons, as well as analytical tools for those horizons
  

PRIMA designed to exploit the advantages of cluster compute environments

• PRIMA optimized to run in a cluster environment
• Supports both 64-bit and 32-bit systems
• Checkpointing for fault recovery

Proven Technology
PRIMA is used by TGS Imaging Services to process the vast TGS multi-client seismic library. We are continuously improving PRIMA based on the needs of the internal TGS Imaging Services group and our external user community. Technology investment is the cornerstone of TGS' continued success. TGS has committed a dedicated team to research and develop future software products and continuously enhance the versatility of PRIMA.