Basic well log interpretation free download as powerpoint presentation. Logging objectives, fields of application logging environment, well pathes, temperature and pressure well geometry and caliper logs depth measurements and depth control drilling process, mud cake and invasion. At the end of the seminar the participant will be able to perform a full interpretation and will know the uses and applications of several advanced open hole and cased hole logs. Log interpretation principlesapplications schlumberger. Basic well log interpretation with python, pandas, matplotlib. Basic relationships of well log interpretation introduction this chapter provides a general introduction to well logging principles and methods that will be used throughout the book. I want to let you know about my 10day, emailbased course for you to start learning some hacks on well log analysis. Determining the porosity and true resistivity of a zone is the first step in converting the raw log data into estimated quantities of oil, gas, and water in a formation. Basicwellloginterpretationbasic well log interpretation. The mean pef, density and neutron values for the kolje formation in the apollo well were plotted into a diagram for typical log responses of various lithologies by mondol 2015, where they all. Published in 1991, log interpretation principlesapplications provides a thorough background of log interpretation.
The flow charts included in this chapter figures 7. So, there you go the six ko ko rules in well log interpretation. Basics of well log interpretation cese intermediate log interpretation. This three hour online course discusses well logs and how to interpret them. Advanced well log analysis shortcourse applied stratigraphix. Welllogging correlation analysis and correlation of well. Scribd is the worlds largest social reading and publishing site. It reminds me of the log interpretation book you can download from the schlumberger website for free. A well log is a record of the well depth verses some physical parameter of the well.
The log may be based either on visual inspection of samples brought to the surface geological logs or on physical measurements made by instruments lowered into the hole geophysical logs. However, a more thorough knowledge of geophysicallog response would be helpful in the use of this report and the described process of aquifer analysis through geophysicallog interpretation. An overview of the basic function and theory of operation of several geophysicallogging devices is presented here. Chapter 1 basic relationships of well log interpretation george asquith texas tech university lubbock, texas, u. It is arranged by the interpretation goals of the data, rather than by the.
Jun 26, 2016 so, there you go the six ko ko rules in well log interpretation. Here you can download file basic well log analysis, 2nd edition pdf. Plot the pressure readings against depth and interpret the resultant pressure profile. The resistivity logs are in the middle and the porosity logs are on the right. Learning basic and advanced methods and techniques for log interpretation. It is important for many petroleum professionals to be able to understand well logs and what they mean. Roberto peveraro roberto peveraro is a petroleum geoscience and engineering consultant with over 38 years experience in the oil industry, including senior technical management positions in formation evaluation, rock.
The last well log contains three porous and permeable zones, located from 300 to 303, 308 to 310 and 338 to 340 meters depth. It is arranged by the interpretation goals of the data, rather than by the underlying physics of the measurements. The simplest radioactive method in geophysical well logging is the natural gamma log. Incase you could not tell, this appears to have potential to be a productive zone. As important as this logderived information is, however, it should not be applied without the. These logging these logging tools record the level of naturally occurring ga mma ray emissions from the rocks.
Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. How to easily read a well log in 5 minutes or less using. These estimated quantities are used to evaluate a zone and to determine whether a well completion attempt is warranted. Basic well log analysis shortcourse course details this is a course designed for geologists, geophysicists, petroleum engineers and other industry professionals who are interested to learn some basic log interpretation techniques.
The schlumberger log interpretation chartbook was initially developed to correct raw wireline and lwd. This is a course designed for geologists, geophysicists, petroleum engineers and other industry professionals who are interested to learn some basic log interpretation techniques. Perhaps the best way to begin a study of logging is. Join our community just now to flow with the file basic well log analysis, 2nd edition pdf and make our shared file collection even more complete and exciting. An interdisciplinary seminar for all earth scientists and engineers giving practical understanding of the principles and interpretation of geophysical well logs in research applications. The text discusses how different log types measure various. The spontaneous and gammaray logs are displayed on the left side of the log.
Basic logging concepts and principles of metrology. Logging tools record the magnitude of a specific formation property, such as resistivity, measured as the tool traverses an interval defined by depth. The log starts at 1,850 in the big lime and big injun formations. Basic well log interpretation a pdh online course for. In excercise 1 you get the impression that the authors were looking at slightly different logs than those presented, given the partial answers and comentary shown.
My first mentor, ko ko kyi, first taught me how to read and interpret well logs just by looking at the well log patterns. This second edition of basic well log analysis delivers a great impact on training and selftraining along with superior workbook exercises, newer measurements, borehole imaging, and nuclear magnetic resonance in separate chapters, all directed to provide a guide through the lengthy and sometimes ambiguous terminology of well logging and. Jun 29, 2012 basic evaluation of south louisiana well log. The course will teach the basic petrophysical principles as well as techniques and procedures to interpret. These subjects are now well covered by company manuals by mr. Logderived data can be used to estimate permeability of a formation, but only if the formation is at irreducible water saturation. We will meet once a week and focus on the fundamentals of well logging methods, including electrical, nuclear, and acoustic measurements. Advanced well log interpretation training course in dubai.
The ability to interpret a log lies in recognizing the significance of each measurement. Wireline and loggingwhiledrilling lwd log quality control. Want to be notified of new releases in petroggbasic wellloginterpretation. Anyone taking this course should be somewhat familiar with oil or gas well design and terminology. Advanced well log analysis shortcourse course details this is a course designed for geologists, geophysicists, petroleum engineers and other industry professionals who are interested to learn some advanced log interpretation techniques. Basic well log analysis is a general introduction to common openhole logging measurements, both wire line and mwdlwd, and the interpretation of those measurements to determine the traditional analytical goals of porosity, fluid saturation, and lithologymineralogy. The excercises at the back of the book were a good idea that was implemented poorly. We will go through each of the components of the log and explain what each one mean. Basic knowledge well log interpretation basics of measurement operation, data acquisition, data processing and correction. Basic well log analysis geoscienceworld books geoscienceworld. Introduction this course is intended for people who are interested in learning more about well logs. Well log interpretation training course petroskills wli. Chapter 1 basic well log analysis by george asquith and. These independent methods can be used to calibrate log analyses.
The value of the measurement is plotted continuously against depth in the well. Its just a common sense, stepbystep approach in interpreting any well logs. Alternate methods for determining water saturation include analysis of cores cut with lowinvasion oilbased muds obms and single well chemical tracer swct tests. It goes without saying that the rules wont work all the time. A best fit line drawn through the points intersects the representing. This interactive, applicationsdriven 5day advanced well log interpretation training course will highlight the techniques and principles of advanced well log interpretation for oil industry professionals who needs to deal with wireline andor lwd logs in their daily job.
Daniel krygowski landmark graphics austin, texas, u. Click on document basic well log analysis, 2nd edition pdf. It is arranged by the interpretation goals of the data, rather than by the underlying physics of the. Basic well log interpretation with python, pandas, matplotlib petroggbasic wellloginterpretation. Basic well log interpretation chemistry physical sciences. Basic well log interpretation pdh online pdhonline course k2 3 pdh. Although the well is highly deviated the well drops off to ca. The various openhole services offered by schlumberger are discussed in some detail, together with essential methods of interpretation and basic applications. Log derived data can be used to estimate permeability of a formation, but only if the formation is at irreducible water saturation. Amsterdam, elsevier science publishers, developments in. Open hole study guide nduction logs electrolog laterolog and dual laterolog flushed zone resistivity devices spontaneous potential log gamma ray log compensated densilog acoustic logs neutron logs. Before you enroll in this course, we recommend you take the basic log analysis course. These logging these logging tools record the level of naturally occurring ga. Well logging, also known as borehole logging is the practice of making a detailed record a well log of the geologic formations penetrated by a borehole.
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