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TRUSAT™ ROCK PROPERTIES

FORMERLY KNOWN AS GRI+

TruSat logo
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Superior Porosity and Saturation Quantification

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  • Drastically Improves Subsurface Models and Predictions of Producibility

  • Traditional (Crushed) & Intact Workflows Available

The TruSat workflow was developed by first attempting to understand the competing retort and extraction processes, followed by rigorous experimental standard trials conducted to determine needed improvements. The result was the development and application of a workflow that is unique and more accurate than any other method practiced in the oil and gas laboratory market to date. TruSat greatly improves the accuracy of porosity and saturation data through increased process controls, and the integration of multiple independent tools and methods, including as-received nuclear magnetic resonance (NMR) and geochemistry (TOC/HAWK), while also allowing for customization of analytical programs. The unique workflow uses a dual-retort process to quantitatively measure total, free, and bound water, alongside the accurate hydrocarbon saturation measurements with a closed retort collection efficiency average of ~99%+. 

Quantified Fluid Loss is Now Possible

Correct/quantify the impact of the lost fluid during coring/collection, transport, sample prep.

Rock with exceptional light hydrocarbon preservation
Rock with poor light hydrocarbon preservation

Fully Integrated Pyrolysis Data Included with Every Sample.

  • Better Quantification of Volatile Fluid Presence

  • Ability to Break Down the Mobile vs Less Mobile/Immobile Fractions

  • Understanding of the Organic Matter Contribution to Hydrocarbon Presence

  • Correction Legacy Crushed Rock Data for Less Mobile/Immobile Fraction

TruSat measurements as-received, post retort and post-extraction
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Distinct Advantages

  • PHYSICALLY measures BOTH Hydrocarbon and Water (vs. measured water with assumed oil density)

  • Closed Retort Design Virtually Eliminates Light-End HC Loss​

  • Fully Integrated Workflow can CORRECT for fluid loss from Coring, Transport, Sample Prep  and Laboratory Crushing

  • Includes Porosity Measured via Three Independent Methods

  • Step-wise THERMAL and CHEMICAL Extraction

  • Partitions Mobile vs. Less Mobile Hydrocarbon Components

  • Fluids Quantified by Visual Imagery (Standard Deliverable)

  • Integrated Geochemistry Data including Programmed Pyrolysis and HRGC of As-Received and Post-Extraction Fluid

Core picture

Immediate Data Applications

  • Re-Calibrate and re-calculate reserve estimates

  • Build a predictive understanding of potential production performance

  • Improve understanding of DRV & SRV

  • NMR T1/T2 acquisition and 2D mapping

  • T2 distributions for fluid-filled pore body quantification

  • T1/T2 results – fluid typing and understanding of lost fluid fraction

  • Assess Free & Bound Water & compare to NMR Results

  • Geochemical integration of TOC and programmed pyrolysis data (can be compliments by fluid property analysis)

  • Differentiate thermal and chemically extracted fluids – understand mobile & immobile organic matrix components of TOC calibration for all subdisciplines

  • Thermal maturity (Tmax), and volatile fluid fraction (S1 mg/g) vs. remaining source rock potential (S2 mg/g)

  • Improved constraint and understanding of stratigraphy

  • Partition both water and hydrocarbon phases for improved oil-in-place assessment

  • Bridge potential challenges among geological, geochemical, petrophysical and engineering applied learnings and concepts​

Sample Requirements

Required Sample Mass & Dimensions

  • Minimum: ~80g

  • 100-120g (ideally) for the Crushed Rock Workflow

  • Intact Workflow Requires 1 Plug w/minimum dimensions 1×1/1.5

Best Suited for:

  • Core Plugs, RSWC, Pucks, 2/3 Butts, ‘chunks’

  • Starting material must be intact

Preservation Required?

  • Fresh cut, wrapped in plastic/foil

  • Chilled transport When Possible

  • Wax preservation is ideal

  • Non-preserved samples will be run at Operator’s discretion

Cuttings Saturation (CutSat   )

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‘CutSat    ’  is an economical workflow to provide calibration to petrophysical models in the portioning and distribution of fluids within the effective and total pore volume systems. This workflow uses established analytical methods to quantify the types and amounts of fluids recovered from the rock under rigorously controlled laboratory conditions.

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While this methodology works on any crushed rock sample (i.e. whole core, RSWC, and/or PSWC) – the real VALUE comes from application on drill-cuttings. Now your petrophysical model can be refined to honor the rock-based quantification of movable and immovable fluids within the wellbore utilizing materials already being generated.

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Integrating these data with geophysical logs and/or distributed property volume extractions from geocellular models can greatly enhance your understanding of the variability and prospectivity within your target zones.

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Furthermore, leveraging GeoMark’s 34 years expertise in geochemical analysis of subsurface fluids, and combining ‘CutSat    ’ with other GeoMark product lines will allow you to greatly enhance your understanding of the organic/inorganic matrix systems and the fractions of fluids that reside between.

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Deliverables:

  • Quantification of movable vs bound fluids (Hydrocarbon & Water)

  • These Bulk Volume Fluids can be utilized to determine the effective porosity system.

  • When combined with other data (chemical extraction or geophysical logs), quantification of the variability in the Effective/Total storage capacity of the reservoir is possible.

  • Extracted fluids (water & oil) that can be geochemically characterized for Production Allocation.

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