Stratigraphy and Sedimentology

integration of outcrop, well, and seismic data to interpret sedimentary depositional environments and basin history.

 

Field (outcrop) studies

  • Description and analysis of outcrops.
  • Measuring field sections (detailed and at regional scale)
  • Field gamma ray logging and detailed sampling of field sections for different purposes
  • Sedimentological, facies and sequence stratigraphic analysis of ancient deposits
  • Geological mapping, local and regional scale. GIS mapping.
  • Geological cross sections. Integration with seismic data
  • Elaboration of sedimentary sheets at different scales.
  • Digital data acquisition of all field data (using our own software)
  • Elaboration of synthetic sedimentological sheets integrating all data & interpretations
  • Structural analysis. Fracture analysis. Fracture logs.
  • Paleogeographic maps and reconstruction.
  • Integration and correlation of field sections with well logs.

Core Analysis

  • Detailed core description, performed and exported into a digital data file
  • Elaboration of preliminary sedimentary logs during core description
  • Facies analysis and interpretation
  • Trace fossil analysis and interpretation
  • Paleoenvironmental analysis
  • Grain size analysis from microscope photographs
  • Documentation with detailed core photographs
  • Detailed core sampling for conventional analysis and biostratigraphy
  • Determination of sandstone net to gross from core photographs (ISA) at sample rates of 1, 10 and 50 cm
  • Construction of .las files with ISA values at different sample rates
  • Determination of impregnation degree from core photographs (IFA) at sample rates of 1, 10 and 50 cm
  • Construction of .las files with IFA values at different sample rates
  • Elaboration of detailed sedimentological sheets at different scales
  • Elaboration of synthetic sedimentological sheets integrating all data & interpretations
  • Geological cross sections. Integration with seismic data

Well log analysis

  • Well log analysis & normalization
  • Calibration of logs with cutting and core data
  • Local and regional well log correlation
  • Stratigraphic & sedimentological analysis
  • Electrofacies definition and analysis using multiple logs
  • Rock type definition.
  • Software assisted electrofacies and rock type mapping on local and regional scale.

Sequence Stratigraphic Analysis & Seismic Stratigraphy

  • Analysis of hierarchical orders of cycicity in sedimentary successions
  • Definition of a framework of a chronostratigraphically significant surfaces
  • Seismic stratigraphic analysis and interpretation 3D geological modelling
  • Calibration of sequence stratigraphy with biostratigraphic results and global standard chronostratigraphy

Biostratigraphic analysis

  • Palinostratigraphic studies (palynology & palynofacies)
  • Foraminifers and ostracods
  • Calcareous nannofossils
  • Macrofossils (vertebrates & invertebrates)
  • Trace fossil analysis

Petrographic analysis

  • Elaboration of thin sections
  • Petrographic studies, compositional and provenance studies
  • Analysis of optical porosity Diagenetic studies

Conventional & laboratory analysis

  • Porosity and permeability determination from core plugs.
  • TOC in shales
  • Analysis of organic matter
  • Geochemical studies

XRAY studies

  • Qualitative and quantitative determination of minerals

Electronic microscope

  • Description and analysis of rock samples
  • Mineralogical and diagenetis analysis on shales

Outcrop and Core description App

For Outcrop and Core description, we use our partner’s software LithoHero.

LithoHero is software designed to collect, record, and display sedimentological and stratigraphic data during fieldwork. The application can be used to describe outcrops or cores. It provides a friendly and comfortable interface that easily adapts to tablets and smartphones running Android (5.0 or higher). It uses the Global Positioning System (GPS) and the camera included in the device. Data can be exported as CSV (Comma Separated Values), as LAS (Log ASCII Standard), and as images.
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