Evaluating Economic Refracturing Candidates and Optimizing Refracture Treatments - PEICE

Venue: Houston

Location: Houston, Texas, United States

Event Date/Time: Nov 17, 2010 End Date/Time: Nov 19, 2010
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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

A complete set of course materials and lunches are included.


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


Additional Information

Delivery Method: Classroom Training
Fee: $ 1995 USD
Location Houston, TX