Module Details

The information contained in this module specification was correct at the time of publication but may be subject to change, either during the session because of unforeseen circumstances, or following review of the module at the end of the session. Queries about the module should be directed to the member of staff with responsibility for the module.
Title Reservoir Petrophysics
Code ENVS603
Coordinator

 
Year CATS Level Semester CATS Value
Session 2020-21 Level 7 FHEQ First Semester 15

Aims

To equip students with a theoretical knowledge of wireline log analysis of boreholes from conventional and logging-while-drilling (LWD) logging runs;
To equip students with a knowledge of other downhole techniques such as fluid sampling, pressure measurement and sidewall coring;
To provide the practical skills needed to qualitatively and quantitatively interpret porosity, lithology (rock type) and fluid saturation from a variety of reservoir rock types using wireline logs;
To provide a knowledge of the full range of core analysis methods and how these relate to wireline log interpretation;
To provide knowledge of how to critically synthesise wireline and core analysis data in terms of the prediction of reservoir presence and reservoir quality;
To provide practical skills in upscaling well data and core data in order to define the average characteristics of flow cells to be used in building static and dynamic reservoir models.


Learning Outcomes

(LO1) Acritical appreciation of how each downhole logging tool works, what it revealsand what rock properties it is controlled by

(LO2) Learninghow to evaluate each log type in terms of rock properties

(LO3) Learningthe theory and practice of bringing data from each log type into an integratedsynthesis

(LO4) Acritical appreciation of the full range of downhole fluid pressure and fluidmobility assessment techniques

(LO5) critical appreciation of the full range of core analysis techniques and what geological processes control porosity and permeability in reservoirs

(S1) Working in groups

(S2) Creating web-based presentations (e.g. wikis)

(S3) Report writing

(S4) Problem solving using information from a number of sources and communication using a number of techniques


Syllabus

 

Lectures will be given covering:
Defining the extent and purpose of petrophysical reservoir analysis;
Drilling boreholes, logging-while-drilling (LWD), logging after drilling, rate-of penetration (ROP) data;
Microscale fabric in reservoir rocks;
Clay mineralogy and its relation to petrophysical properties of reservoirs (Vshale);
Wettability in reservoirs: definition, controls, measurement;
Calliper logs and spontaneous potential (SP) logs;
Gamma-ray logs and what controls them;
Sonic logs, their controls and links to seismic analysis;
Density logs and controls on rock density (mineralogy, porosity); Neutron logs, controls, the gas effect;
Image logs, bedding, fracturing;
Photoelectric logs and mineralogy;
Integrated analysis of porosity and lithology;
NTG (net-to-gross calculation);
Mineralogy and rock type analysis;
Neural network approach to log interpretation;
Resistivity logs, fluid type, pore types in reservoirs, fluid mobility, water resistivity;
Analysis of formation pressure measurements: fluid pressure and permeability determination;
Linking resistivity and pressure data to define fluid contacts and wetting state at oil-water contacts NMR logs and pore size distribution in reservoirs;
Core analysis: porosity and permeability data collection;
Upscaling core and wireline data: background and philosophy;
Relative permeability and capillarity;
Dean Stark analysis of preserved core to determine fluid saturations;
Pore size distribution in reservoir rocks using mercury intrusion methods;
Specific surface area determination of reservoir rocks;
Integrating core data with wireline log data;
Concepts and theory behind Stock Tank Oil in Place (STOIIP) calculations.

Workshops will cover:
typical logs suites, and presentation of petrophysical data such as Vshale, porosity, oil- and water-saturation: Calliper logs, spontaneous potential logs, and gamma ra y logs;
Sonic logs;
Density logs and photoelectric logs;
Neutron logs;
Resistivity logs;
Image logs;
Formation pressure (and downhole permeability) analysis, linking resistivity logs pressure data;
NMR logs;
Mineralogy and rock type analysis;
Neural network approach to log interpretation;
Core analysis, upscaling and relative permeability;
Integrating core data with wireline log data;
Practical determination of Stock Tank Oil in Place (STOIIP)


Teaching and Learning Strategies

Teaching Method 1 - Lecture
Description: 24 lectures together covering all the topics listed in the syllabus
Attendance Recorded: Yes

Teaching Method 2 - Practical
Description: 12 workshops of 3 hours duration each together covering all the topics listed in the syllabus
Attendance Recorded: Yes


Teaching Schedule

  Lectures Seminars Tutorials Lab Practicals Fieldwork Placement Other TOTAL
Study Hours 24

        36

60
Timetable (if known)              
Private Study 90
TOTAL HOURS 150

Assessment

EXAM Duration Timing
(Semester)
% of
final
mark
Resit/resubmission
opportunity
Penalty for late
submission
Notes
             
CONTINUOUS Duration Timing
(Semester)
% of
final
mark
Resit/resubmission
opportunity
Penalty for late
submission
Notes
Assessed web based presentation (e.g. wiki page) -1 group There is a resit opportunity. Standard UoL penalty applies for late submission. This is not an anonymous assessment. Assessment Schedul  Intro pages as a gro    20       
Assessed web based presentation (e.g. wiki page) -2 individual There is a resit opportunity. Standard UoL penalty applies for late submission. This is not an anonymous assessment. Assessment Sc  Pages following the     40       
Report evaluating a dataset of wireline, core and fluid pressure There is a resit opportunity. Standard UoL penalty applies for late submission. This is an anonymous assessment. Assessment Sche  3'000    40       

Recommended Texts

Reading lists are managed at readinglists.liverpool.ac.uk. Click here to access the reading lists for this module.