Geoscience & Engineering

Geoscience & Engineering

The INEXS staff of engineers, geologists, and geophysicists have worked over 7000 projects encompassing every major basin in the world and are qualified experts in resource evaluations, understanding and applying regional geology, and integrated field studies.


INEXS provides detailed technical evaluations across the entire spectrum of upstream oil and gas exploration and production with regional basin studies, acquisition evaluations, integrated field studies, development and production optimization, and divestiture processes.

INEXS evaluations allow a Capital and Debt Provider firms to understand and quantify the asset they are interested in buying, selling or investing and provide an understanding of the risks associated with each potential investment.

INEXS evaluations also allow Exploration and Production firms to fully understand their assets, to quantify and risk the assets and to catalog opportunities.

INEXS independently evaluates the realizable economic value of a portfolio of assets and analyzes the current production performance and recommends enhancements to improve result.

  • Review third party engineering reports.  Confirm technical support for all proven reserves.  Check support for acreage, reservoir thickness, porosity, water saturation, pressures.
  • Review full presentation of portfolio, identify high value wells, and wells with insufficient support data, then meet with technical team to resolve.
  • Generate risk assessment for recoverable reserves and create a risked reserve value for all non-producing and undeveloped locations.
  • Use identified risk values to identify the high value opportunities, and to downgrade those below key threshold ratios.
  • Build full recompletion and drilling schedule to capture all of the high value non-producing and undeveloped locations, and define the Investment necessary to complete the program.
  • Review field operations to identify possible improvements to reduce downtime, lower lease operating expenses, increase field level efficiency, and maximize value.
  • Generate full written report including complete well database, along with the field re-completion and drilling schedule of field operations over the next several years to maximize the value of the entire portfolio.
  • Identify all data relevant to the field.
    • Cross-check all well locations, deviations, KBs, TDs, perforations, production from each perf interval, pressures, etc.
    • Correlate all TVD well logs and tie to the 3D seismic data.
    • Sort all well production by API and perf interval.
  • Conduct fault and horizon interpretations.
    • Depth-convert seismic time surfaces using laterally and vertically varying velocities.
    • Generate well, seismic and map attributes and correlate to structure.
  • Establish hydrocarbon potential.
    • Use reservoir thickness, porosity, content and structural closure to determine hydrocarbons in place and recoverable reserves.
    • Compare the hydrocarbons produced from a fault block or reservoir to the calculated EUR, and determine if additional drilling or side-tracking potential would be cost-effective.
    • Design well trajectory and location of targets and faults to allow for testing of multiple targets with a single optimal trajectory.
    • Integrate drilling results with all data.
  • Prepare concluding reports that quantify individual reservoir production and remaining potential.
  • Every project begins with an integration of regional geology.
  • Identify productive trends and reservoirs.
  • Study analogous fields including:
    • Production and drive mechanisms.
    • Trapping mechanisms.
    • Reservoir stratigraphy and performance.
    • Apply knowledge of stratigraphy to identify depositional environments.
    • Identify most attractive areas for each reservoir.
    • Apply knowledge of analogous fields to study area.
    • Bring increased potential into the study area.

Shale Resource Evaluations have become one of the top INEXS core competencies over the recent decade.  The INEXS evaluation includes:

  • Complete regional geological study based on the correlation of regional deep well logs.  Capture top, base, and isopach values, and identify top and bottom seal, stratigraphic variations, and stratigraphic sub-units.
  • Generate a full lab analysis including geochemistry, organic petrology, rock mechanics, lithology, thermal maturity (VR), organic richness (TOC), kerogen type, geomechanics, and brittleness
    Integrate all geological, geomechanical and lab data.  Generate regional geologic maps including depth structure, isopach, isochore and gas in place maps.
  • Integrate a grid of 3D seismic data and available reprocessed 2D seismic data,connecting as many recent wells as possible.
  • Reprocessing of the 3D seismic data would improve higher frequencies, reduce noise, and create better gathers for pre-stack analysis.  Next generate a series of seismic derivative attributes including AVO, seismic inversion, Poisson’s ratio, Young’s modulus, lambda rho, mu rho, etc.
  • Create regional permitting, drilling, and completion activity maps including posting all key wells used for lab analysis.
  • Create detailed database of practical IP (30-day average), cumulative production, and any available information on perfs, frac stages, etc.
  • Generate a series of cross-correlation attributes – some examples would include TOC vs. isopach, or VR vs. depth, practical IP vs. Poisson’s ratio, Young’s modulus vs cumulative production.
  • The project will be delivered in digital format for further analysis by the client in formats compatible with Landmark, SMT, SeisWare, Petra, and Transform.

In addition, activity updates will be offered every six months to integrate newly released wells, updated production information, and possibly integrate additional 2D seismic data.