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Evaluating Economic Refracturing Candidates and Optimizing Refracture Treatments
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| Course Satisfaction Rating: 97.2% |
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Course Overview
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Can production be improved in an existing producing well with a refracture treatment? Did the original treatment leave economic hydrocarbon volumes behind? What is the best procedure for refracturing wells that have multiple perforated intervals open? This three-day course is designed for engineers, managers, and geoscientists who are asking these questions. The course will help participants maximize asset value by estimating what original stimulation treatment production results should be and comparing this estimate to actual results. The "Completion Efficiency" process (SPE 90483) involves the development of a procedure to determine if poor production performance is the result of permeability-thickness, reservoir pressure, completion practices, or a combination of these factors. An integrative process focuses on the use of basic openhole wireline logs, core data, pre-frac pump-in test data, and production data in order to develop local models and ultimately predict production performance using only a basic log suite and pre-frac pump-in test information on subsequent wells. In existing completions with open perforations above potential refrac candidate zones, an innovative and cost effective well testing technique is used to isolate perforations and obtain pressure and permeability data using a packer, bridge plug, and downhole shutin surface readout tool assembly. Once the target zones are identified openhole packers are run in cased hole to isolate individual stages for refracturing. Diagnostic techniques such as production logs and decline curve analysis are discussed to enhance performance analysis. A comprehensive review of "best practices" from the evaluation of over 1000 wells in past field studies is provided to aid in the optimization of future or existing well completions. Participants will receive a comprehensive log analysis spreadsheet that includes calculation of all inputs required to develop calibrated permeability and stress profiles. Completion Efficiency case studies are provided, and participants are encouraged to provide local examples for discussion of model implementation and "best practices" for their areas of activity.
*Each student will require a laptop with Microsoft Excel and Adobe Reader installed for this course
2.4 CEU (Continuing Education Units) or 24 PDH (Professional Development Hours)
A complete set of course materials and lunches are included.
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| Course Outline |
 | The Prize - Remaining Mobile Hydrocarbons in Existing Wellbores
Review of Basic Log Analysis Techniques
Log Quality Control and Calibration Steps
Log Data Normalization
Completion Efficiency Model Data Requirements
Net Pay Determination Using Core and Production Data
Permeability, Rock Properties and Reservoir Pressure Model Calibration to Field Data
Integration of Rock Properties, Permeability, and Reservoir Pressure Models
Production Decline Curve Analysis
Completion Efficiency Exercises
Historical Best Practices for Improving Completion Efficiency
Measuring Zonal Pressures in Existing Completions-Packer, Bridge Plug, Downhole Shutin
Executing Refrac Treatments in Multiple Zone Existing Completions-Openhole Packers
Review of Local Examples and Discussion |
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| Instructor(s): |
| | Robert Barba | | Bob Barba spent 10 years with a major international oilfield services company as an open hole field engineer, sales engineer, and product development manager, and the next 14 years consulting to over 150 companies on petrophysics and completion optimization. He served as a SPE Distinguished Lecturer on the integration of petrophysics with completion designs, and has focused on the integration of petrophysics with completion designs in a variety of tight gas reservoirs in North America, conducting numerous field studies for operators evaluating the "completion efficiency" of over 600 wells and providing "best practices" recommendations based on the study results (SPE 90483). Bob has been responsible for the petrophysical analysis of over 32 major fields worldwide as part of integrated reservoir characterization studies identifying remaining mobile hydrocarbons. He has authored 32 technical papers on the integration of petrophysics with completion designs, horizontal wells, and reservoir characterization projects. Bob earned a BS from the US Naval Academy and MBA from the University of Florida, and is a member of the SPE, SPWLA, and AAPG.
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| | Need more information about this course from the instructor(s)? click here |
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All scheduled event(s) for this short course: |
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Legend:
Blue = 5 or more seats available
Green = less than 5 seats available
Red = the event is full |
| | Start Date | Delivery | Location | Fee | |
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| 18-Oct-10 | Classroom | Calgary | $ 1995 CAD |  | |
| 1-Nov-10 | Classroom | Houston | $ 1995 USD | | |
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