Petra^™: Geological interpretation software

Features

• Integrate surface land picture into your subsurface interpretations
• Post digital/raster log curves and production data to well location
• Create and customize contour and bubble maps
• Display core and competed zones and top producer spatial distribution
• Post seismic shot point data on your map
• Define a node and surrounding wells
• Calculate and display drainage ellipses at your well locations
• Spot wells on your map by clicking on the map or entering coordinates and space wells on quarter-section grid
• Graphically select wells to include in four types of cross sections
• Perform and customize volumetric calculations for each overlay polygon or hand-drawn areas
• Produce stunning graphical outputs on paper or in digital format

Uses

• Optimize well location and plan facilities faster
• Analyze drilling success, competitor activity and reservoir performance
• Understand production attributes at the well location
• Visualize intervals and completions
• Locate wells with the attributes you need
• Integrate your geological and geophysical workflows
• Analyze your producer and injector patterns
• Visualize your drainage patterns and easily pick infill drilling locations
• Increase your projection accuracy with the most appropriate and relevant data
• Reduce overlap when data is posted at closely spaced well locations

Mapping Module brochure

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Features

• Choose one of four cross sections that best fit your workflow:
  • Single well – Display one well for analysis and printing
  • Well-to-well – Connect selected wells in a line
  • Line and wells – Display a projection line that features hand-picked wells
  • Line and corridor – Display a projection line that features selected wells from a rectangular corridor around the line
• Easily set depth ranges: Set cross section to a user-specified depth range (top and bottom), or automatically to the top and base of selected logs or tops
• Shift depth datums easily from elevation (structural) to a particular top (stratigraphic)
• Display contour grids, digital/raster log curves, formation tops, fault gaps, cored and completed zones
• Interpolate the value of well logs between wells
• Edit and manipulate digital log information with depth shifting, amplitude shifting and values interpolation
• Draw, mark up and annotate any geological or engineering-related data on your cross section
• Post production data in the well footer
• Produce stunning graphical outputs on paper or in digital format

Uses

• Optimize well location selection
• Perform directional well analysis with line and wells cross section
• Analyze and understand both depositional environment and current structural setting
• Identify potential hydrocarbon-bearing zones
• Easily visualize intervals and completions
• Assess production and reservoir performance

Cross Section Module brochure

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Features

• Use simple step-by-step process to pick tops, pay and unassigned tops – process guides you through well selection, track and digital/raster log assignment, depth intervals and tops picking style
• Flexibly select wells using query result, mapping module or cross section module
• Quickly identify the raster and digital log types you would like to display in each track
• Set depth range to user-specified depth range (top and bottom) or automatically to the top and base of the selected logs or tops
• Display log curve data, formation tops, fault gaps
• Choose pick style (either one top across the entire cross section or a list of tops and work successively down each wellbore) and type (tops, unassigned tops, pay zones and faults)
• Shift depth datums easily from elevation (structural) to a particular top (stratigraphic)
• Pan and zoom with the mouse cursor to accelerate research

Uses

• Find wells that will maximize your return
• Simplify workflow for picking tops
• Streamline workflow by locating only relevant logs and choosing pick style/type
• Analyze and understand both depositional environment and current structural setting

Log Correlation Module brochure

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Features

• Use well-planning wizard to place your well’s surface, landing and bottom-hole locations on map
• Manually enter or automatically calculate depths of landing and bottom hole locations from one or more gridded surfaces
• Store all planned wells in Petra database for future data loads and analyses
• Use vertical section plane to see profile view of your well in just one click, with automatic horizontal well rescaling
• Display contour grids, log curves, formation tops, well events (high gas-kick zones, casing points, rig events)
• Easily drag and drop depth adjustments, quickly rescale window to view a new depth of interest, and highlight key features for analysis
• Pick repeated formation tops along your horizontal wellbore and extrapolated tops above and below your wellbore
• Quickly re-grid surfaces to quality control
• Integrate with 3D Visualization Module
• Produce stunning graphical outputs on paper or in digital format
• Use map window to open any saved overlay from the Map Module

Uses

• Identify the highest hydrocarbon potential wells
• Quickly plan wells and load drilling data
• Easily design wells within your required geological parameters
• Analyze horizontal well performance and post results
• Boost efficiency by eliminating time-consuming, trial-and-error rescaling

Directional Well Module brochure

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Features

• Upload existing Petra data no data imports/exports needed
• Work in depth and time modes
• Load cross sections from Cross Section Module as fence diagrams, with annotations, interpretations and color fills
• Query and select wells or choose wells from previously created lists and view in 3D
• Post well information: Tops, shows, perforations, digital log curves and dipmeter data
• Overlay map layers – with land postings, grid and culture information, and annotations—and gridded surfaces that you created and saved in the Map Module
• Select a depth and project a flat plane at that depth
• Load and view 3D seismic surveys, 2D lines and seismic lines from PetraSeis^™
• Easily pan, zoom and rotate the 3D view with your mouse
• Create professional 3D images in print or digital format
• Increase vertical exaggeration to emphasize small lateral elevation changes

Uses

• Optimize well location
• Simplify and speed your workflow with decision-ready data, relevant wells, and pan-and-zoom functionality
• Integrate your seismic interpretations and geophysical workflows
• Analyze subtle play features and horizontal drilling successes
• Visualize intersections of fluid contacts or drilling targets with your wells and surfaces

3-D Visualization Module brochure

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Features

• Determine oil and gas recoveries using four possible models:
  • Gas Cap Drive Model – Account for oil recovery with gas cap and solution gas expansion. Gravity is not taken into account, which can significantly increase oil recovery in steeply dipping reservoirs.
  • Water Drive Model – Perform water drive calculations on reservoirs in which no pressure loss occurs with production. Total pressure maintenance by the aquifer is provided in this model.
  • Solution Gas Drive Model – Determine production from initial to bubble point pressure with liquid expansion.
  • Combination Drive Model – Specify any combination of the gas cap, water drive, and solution drive models for a complete and unique recovery calculation.
• Determine gas and condensate recoveries using three possible models:
  • Volumetric Drive Model – Quantify recovery by calculating the formation-volume factor at initial and abandonment pressures.
  • Water Drive Model Water – Perform water drive calculations on reservoirs in which no pressure loss occurs with production. Total pressure maintenance by the aquifer is provided in this model.
  • Partial Water Drive Model – Perform calculation based on model in which, at initial pressure, the entire reservoir undergoes volumetric depletion to abandonment pressure. At abandonment pressure, additional recovery in the water-swept zone accounts for the effect of water influx.
• Perform Monte Carlo simulations: Find the probable distribution of reserves for both oil and gas reservoirs based on various distributions of reservoir parameters.

Uses

• Calculate likely recoverable reserves

Advanced Volumetrics Module brochure

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Features

• Compare historical and average production between well sets based on differences in:
  • Completion or stimulation techniques
  • Reservoir properties
  • Well placement in reservoir
• Select wells for use in module from an existing well list, a query result or the Mapping Module
• Group selected wells through two options:
  • Group Plot (Sum Wells) – This method sums the selected wells’ production streams; data can be shown as either a cumulative or an average plot
  • Individual Well Plot – This method plots the individual production streams for each selected well
• Display monthly production data for a set of wells, including summing, averaging, or time-normalizing production data
• Calculate and display ratios:
  • Water-oil
  • Gas-oil
  • Oil-gas or condensate yield
  • Gas-liquids
  • Water cut
  • Oil cut
  • Plus a number of user-defined ratios
• Time normalize production streams using three possible options:
  • Raw Data – This option shows production data through time without adjusting to a single start time; raw data plotted against cumulative values shows historical production for selected wells
  • Normalize to Start Time – This option adjusts each well’s production to a common start point and helps eliminate partial month production or spurious data at the beginning of production
  • Normalize to Max Data Value – This option adjusts each well’s maximum rate to a common start point and is useful for normalizing wells that reach maximum production within different time periods
• Store multiple production streams for an individual well, including monthly totals for oil, gas and water with formation-specific streams, if captured
• Export all plotted production information to a text file with user-specified annotation on the plot, including all plotted curves with monthly rates
• Plot the following:
  • Chart axis cycles
  • Well count
  • Monthly and daily (averaged) rates
  • Value of monthly production / active wells

Uses

• Analyze production trends, devise depletion strategies and manage reservoirs
• Predict decline behavior of new wells, recompletions and stimulations
• Group wells together to obtain total production for a lease, group of wells or specific formation

Production Group Plot Module brochure

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No special video cards are required. Petra is compatible with a broad range of high performance video cards and multiple monitor installations.

Minimum Requirements

• PC with dual core processor or better
• Windows XP 32 bit OS or Vista/Windows 7 64 bit Operating System
• 4GB RAM for XP 32 bit OS
• 8GB RAM for Vista 64 bit OS or Windows 7 64 bit OS
• 512 MB Video system with OPENGL acceleration
• 1280 x 1024 or greater resolution monitor

Recommended Requirements

• PC with dual core processor or better
• Vista/Windows 7 64 bit Operating System
• 16GB for Vista/Windows 7 64 bit OS
• 512 MB Video system with OPENGL acceleration
• Dual Monitor Video System