Geochemistry

Geochemistry - Overview

Ellington Geological Services is committed to providing top-tier laboratory geochemical services, including LECO Total Organic Carbon (TOC), HAWK pyrolysis, X-Ray Diffraction (XRD), and X-Ray Fluorescence (XRF) techniques. These methods enable cost-effective and rapid organic and inorganic characterization of rock samples. Our mission is to support your drilling and completion decisions with high-quality geochemical data, ensuring you make informed choices.

LECO TOC

LECO C230 analyzer at Ellington Geological Services guarantees thorough sample combustion using high-temperature induction furnaces, setting the “gold standard” for carbon determination. Since our founding in 1989, Ellington has been offering this service.

We deliver rapid and precise results with minimal sample material for:

Total Organic Carbon (TOC)
Total Carbon (TC)
Total Inorganic Carbon (TIC)

X-Ray Fluorescence (XRF)

Ellington Geological Services is equipped with a range of XRF instruments, including Bruker Handheld XRF Tracer and CTX. These ultra-portable devices offer exceptional performance and unique features for elemental analysis.

We provide matrix-matched calibrations tailored to various mineral types, such as mudrock and limestone. Additionally, the Bruker Handheld XRF devices enables on-site measurements, delivering real-time results.

X-Ray Diffraction (XRD)

Ellington Geological Services is equipped with Bruker X-Ray Diffraction (XRD) D2 Phaser instruments offering both qualitative and quantitative crystalline phase analysis through XRD mineralogy, encompassing bulk and clay analysis. It allows us to determine mineral type and abundance, brittleness, and grain density, which are crucial for identifying problem minerals and evaluating porosity and reservoir quality.

We provide quantitative analyses for:

XRD Bulk Mineralogy
XRD Clay Speciation

HAWK Pyrolysis

Ellington Geological Services offers HAWK Pyrolysis.

The HAWK Pyrolysis classical method is instrumental in identifying the type and maturity of source rock organic matter and assessing hydrocarbon potential. Through a programmed heating process, the HAWK instrument provides essential data to estimate hydrocarbon potential.

Measurements from the classical pyrolysis method include:

S1: Free oil content
S2: Remaining generation potential
Tmax: Temperature at maximum evolution of S2
S3: Organic carbon dioxide yield

The HAWK PAM method evaluates mobile hydrocarbons, providing detailed measurements such as:

Oil 1 (mg HC/g rock)
Tmax Oil 1
Oil 2 (mg HC/g rock)
Tmax Oil 2
Oil 3 (mg HC/g rock)
Tmax Oil 3
Oil 4 (mg HC/g rock)
Tmax Oil 4
K-1 (mg HC/g rock)
Tmax K-1

Data Integration Service

The advanced statistical data integration service at Ellington Geological Services offers a robust approach to extracting valuable information from extensive datasets for reservoir characterization and formation evaluation.

Expert Analysis: Our team, with extensive knowledge in geology, stratigraphy, geochemistry, and statistics, conducts thorough data analysis, including data quality control (QC), evaluation, integration, and well correlations.

Multivariate Statistical Analysis: This method synthesizes complex datasets from downhole logging tools and laboratory-analyzed rock samples (cores, plugs, and cuttings).
Clustering Analyses: We perform clustering analyses to determine rock types and identify formation tops.

Data Display: We provide integrated data logs for clear and comprehensive data visualization.

Spectral Gamma Ray

Ellington Geological Services' in-house Spectral Gamma Ray technology, utilizing as-received wet cuttings or dry-washed cuttings, delivers high-quality data on potassium (K), uranium (U), thorium (Th), and SpectralGR. This method is non-destructive, fast (approximately 3 minutes per sample), and cost-effective.

Applications include:

Determining confidence levels between results from drill cuttings and downhole logs
Resolving ambiguities related to cuttings depth shifts
Providing alternative gamma logs when downhole GR logs are uncertain or absent
Estimating shale or clay contents, clay typing, organic matter, and depositional environment
Quality control for mudlogging and storing wet cuttings