Content Tagged: "formation evaluation"

Friday, May 17, 2024 | 09:00AM – 10:00AM CT Surface roughness is an essential rock parameter affecti

Reviews a number of specialized open and cased hole logging tools with their associated well logs. The topic covers nuclear magnetic resonance (NMR); dielectric, sidewall coring, formation testing and sampling, caliper, borehole gravimeter and borehole televiewer tools run in open wellbores, with examples of their well logs. Cased hole pulsed neutron logging tools are reviewed, together with well logs recorded in both pulsed neutron capture and carbon/oxygen logging modes.

Comprehensively reviews the wide range of logging tool designs, operational characteristics, functionalities, and petrophysical interpretation applications for Gamma Ray, Spontaneous Potential, Density and Photoelectric, Neutron Porosity, Sonic and Resistivity well logs.

Identify rock mechanical properties from core, cuttings and electrical logs. Use analysis to address issues related to fractures, subsurface pressures, subsidence and compaction. Illustrate an understanding of rock properties that effect seismic response. Upon completing this course, the learner will be able to: define basic rock mechanical properties, describe how they are measured, understand the differences between laboratory measurements and in-situ properties, predict formation subsurface pressure environment and principal stress directions, and define properties that effect seismic response and how these properties relate to AVO effect.

Introduces the scope, objectives and main methods of formation evaluation, especially LWD and wireline well logging, core acquisition and analysis, and well testing. Discusses the measurements of rock and fluid properties such as porosity, absolute and relative permeability, formation resistivity, fluid saturation, petrophysical parameters and the effects of drilling mud filtrate invasion on the formations near the wellbore. Describes the main core acquisition processes and subsequent common routine and special core analysis (SCAL) techniques. Overviews the objectives and some basic methods of well testing and analysis, and the integration of the well test analysis with other subsurface data.

Presents a comprehensive review of core analysis procedures and equipment, including sample preparation, routine core analysis, special core analysis (SCAL), core description, core photographs as well as complementary core information. Provides examples of typical core analysis data and reports.

Upon completion of this module, the participant should be able to apply information from newly acquired well logs, core samples and other data sources to refine the geological model of the reservoir, including its structure, stratigraphy, dimensions and boundaries.

Explains commonly used log analysis techniques and formulas. Demonstrates the use of logging tools to evaluate porosity, lithology and saturation. Presents computer applications, methods and models and combines the various tools and measurements in a concluding case study.

This topic defines porosity and describes its different types as they relate to reservoir quality. It defines permeability and explains how it is determined in a laboratory setting. The course summarizes the different elements associated with rock texture and describes how those elements affect the porosity and permeability of a reservoir. It explains how capillary pressure affects the overall quality of a reservoir. The four sandstone burial factors that affect porosity and permeability and the three main cementation types that degrade porosity in sandstones are described. The course explains the ways in which porosity can be degraded in limestones and dolomites. It identifies the rocks that typically form atypical reservoirs and how porosity primarily occurs in these reservoirs. The differences between pay, net pay and gross pay, and how reservoir formations can affect these calculations are described. The five different types of reservoir shapes associated with areal continuity and the different types of reservoir orientations associated with cross-sectional continuity are explained. The course describes how to calculate a reservoir's initial oil and gas in-place volume using basic inputs and equations.

Demonstrates the techniques of conventional mud logging during the preparation of a formation log and accompanying event reports. Presents the rate-of-penetration curve, lithology plot, total gas curve, gas composition curves and descriptive track. Also discusses the use of mud logging in overpressure recognition, hydrocarbon evaluation and non-hydrocarbon gas detection. Summarizes computer-based data acquisition and measurement-while-drilling techniques.

Use electromagnetic, radioactive, acoustic and other logs to infer stratigraphic and structural characteristics of subsurface formations.

Define the properties of the reservoir rock/fluid system.

Determine rock and fluid properties using open hole logs, mud logs, cuttings and core data.

Upon completing this Learning Module assignment, the participant should be able to select the appropriate logging tool(s) for evaluating a given reservoir parameter, taking into account operating conditions and limitations, and specify procedures, surface equipment, and auxiliary tools to be employed on a logging job.

Upon completion of this module, the participant should be able to: prepare the well for open-hole logging operations and take steps to ensure that such operations proceed smoothly, alert the wellsite geologist and service company logging engineer of hole conditions that may require modifications or special precautions in the logging program, assist in planning and carrying out a drill stem test, determine safe operating parameters for running a production casing string, plan and carry out a simple single-stage primary cementing operation, use temperature surveys to determine the top of cement in the casing/hole annulus, and outline the steps involved in preparing the well for final completion and releasing the drilling rig.