Coring and Core Analysis
أخذ اللباب وتحليله
- Next date
- Available in-house
- Fees from
- —per delegate
- Formats
- In-house training0 sessions
- Duration
- 5 daysCertificate
Overview
Core samples are the only direct physical evidence of what reservoir rocks look like and how they behave. Logs, seismic data and well tests are all interpretations, but cores allow geologists and engineers to measure porosity, permeability, saturation, wettability, capillary pressure and rock mechanics directly. Core data is used to calibrate log interpretations, build geological and reservoir models, design completions and stimulation, and plan enhanced recovery projects. Because coring is expensive and core material is limited, every coring programme must be planned carefully to collect the right samples and protect their quality.
This course provides a practical understanding of coring operations and core analysis for oil and gas reservoirs. Participants learn how to plan a coring programme, select coring tools and methods, and handle, preserve and transport cores to protect their integrity. The course covers core description and sedimentology, routine core analysis for porosity, permeability and saturation, and special core analysis including capillary pressure, relative permeability, wettability and electrical properties. It also explains rock mechanics testing, sidewall cores, digital rock analysis, quality control of laboratory data and the integration of core results into petrophysical, geological and reservoir engineering studies.
Objectives
- Plan coring programmes with clear objectives, intervals and budgets
- Select coring tools and methods for different formations and well conditions
- Handle, preserve and transport cores to protect sample quality
- Describe cores and interpret depositional environments and facies
- Understand routine core analysis for porosity, permeability and saturation
- Interpret special core analysis data such as capillary pressure and relative permeability
- Integrate core results into petrophysical and reservoir engineering studies
Who should attend
Geologists, petrophysicists, reservoir and petroleum engineers, laboratory staff and wellsite geologists involved in coring and core studies.
Training methodology
The course combines explanation of coring and laboratory methods with practical work on core photographs, core data sets and laboratory reports. Participants plan a coring programme for an appraisal well, describe core sections and identify facies, and quality check routine and special core analysis data. Capillary pressure and relative permeability curves are interpreted and used to build saturation height functions. Core-log integration exercises show how to calibrate porosity and permeability models. Case studies highlight the cost of poor core handling and the value of well planned programmes, with a short quiz each day.
Programme outline
Day1Coring Programmes and Operations
- Why core is taken and the questions that only core data can answer reliably
- Planning a coring programme: objectives, intervals, core points and budget
- Conventional coring tools, core barrels, bits and coring in different formations
- Sidewall coring with percussion and rotary tools and their typical applications
- Wellsite core handling, gamma scanning, core stabilisation and suitable preservation methods
- Core transport, chain of custody and core storage in the laboratory and archive
- Practical exercise: preparing a coring programme for an appraisal well
Day2Core Description and Geology
- Core description principles, logs and the standard terminology used by geologists
- Sedimentary structures, grain size and their link with depositional environments
- Carbonate core description, texture classification schemes and the recognition of diagenetic features
- Fractures, stylolites and other features affecting reservoir flow and quality
- Core photography, CT scanning and imaging techniques for core characterisation
- Thin sections, SEM and XRD analysis to understand mineralogy and pore systems
- Practical exercise: describing core photographs and interpreting facies and environments
Day3Routine Core Analysis
- Core sampling plans and the selection of plugs for laboratory analysis
- Core cleaning, drying and the effect of laboratory procedures on results
- Porosity measurement methods in the laboratory and the determination of grain density
- Permeability measurement, Klinkenberg correction and the effect of overburden stress
- Fluid saturation measurement using the Dean-Stark and retort methods and their limitations
- Quality control of routine core analysis data and the identification of errors
- Practical exercise: quality checking a routine core analysis report and building a poro-perm transform
Day4Special Core Analysis
- Wettability, its measurement and its strong effect on reservoir behaviour
- Capillary pressure measurement methods and the building of saturation height functions
- Relative permeability from steady-state and unsteady-state tests and how to interpret results
- Electrical properties and the determination of Archie exponents from core
- Rock mechanics tests for strength, elastic properties and sand production risk
- Digital rock physics and how imaging supports traditional laboratory testing
- Practical exercise: interpreting capillary pressure and relative permeability data sets
Day5Core Integration and Applications
- Core-to-log depth matching and its use in calibrating petrophysical interpretations
- Using core data in geological models, rock typing and reservoir zonation
- Applying core results in reservoir simulation, EOR screening and completion design
- Managing laboratory contracts, test programmes and data quality with service companies
- Lessons from coring programmes that succeeded or failed to deliver useful data
- Group exercise: integrating core and log data to define rock types for a reservoir
- Final assessment and discussion of core data use in participants' own fields
Dates and fees
There are no scheduled dates for this course at the moment. Request it as in-house training, or ask us about the next date.
Certificate
Every delegate who attends the full programme receives a Harfard Technology certificate of completion stating the course title, duration, dates and venue.
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