Monday, October 08
This course acquaints participants with the basics of oil and gas shale evaluation and current shale selection, well completion, fracturing, and production technologies for shale reservoirs. The interactive format includes field data, current approaches and use of technologies suited for shale developments. Technologies include logging, frac interval selection, multistage fracturing in horizontal wells, and a summary of field data from many shale plays.
Candidate selection criteria to identify shale “sweet spots”
Complex fractures and role of geomechanics
Well orientation, optimum length and perf cluster design
Optimizing well completions and stimulations
Fracturing risk estimation: strengths and areas to improve
Water sources, treatment, reuse and disposal
Predicting production, estimating decline and well start-up suggestions
Surface equipment and production operations
Tuesday, October 09
This session provides insight on how to choose the best refracturing candidates. A rigorous screening process can greatly improve the odds of success. Presentations will provide attendees with an awareness of the intricacies necessary for well selection required for successful refrac campaigns.
There is abundant field data pointing to communication between hydraulic fractures created in the same or in adjacent horizontal wells. Important consequences of these interactions include uneven production distribution between fractures in the same well and production interference between adjacent wells. Understanding the nature, cause, and effect of these interactions is critical for optimizing various production operations, including re-fracturing. This session will discuss the different types of intra- and inter-well communications, their causes, how to identify them, and attempts to reduce their negative effects.
This session will focus on completion and coiled tubing technologies that are directly involved in refrac applications. These technologies include but are not limited to: (1) new or improved completion hardware such as, expandable and cemented liners, packers, plugs, sliding sleeves, dissolvables, etc.; (2) innovative implementation of completion and/or coiled tubing systems; (3) new design methodology or tools; (4) case histories, including design and execution of best practices, operations efficiencies and economic considerations.
The session will explore diversion and zonal isolation options to assure re-fracture treatments are placed in the targeted locations for optimum results. These techniques have historically included chemical, ball diversion and other solid diversion materials. The session will explore the results of these applications being deployed. Additionally, new materials and techniques to improve diversion and zonal isolation will be discussed.
The Poster Session will be held in conjunction with the Reception on Tuesday evening. The Poster Session will have topics that cover all aspects of technologies and case histories relevant to ReFracturing. The poster owners will be present during the poster session to explain and answer questions about the topics on their posters. We encourage all attendees to interact with each other during the reception, and rotate through the posters with questions and requests.
Interested in presenting a poster?
Complete the Poster Submission Form (pdf) by 31 July 2018.
Wednesday, October 10
Designing a refrac job requires an operator to have a holistic view of the geomechanics of the reservoir, performance of neighboring wells, initial completion design and many more factors that need to be investigated prior to the actual field test. The design will have the ultimate effect on the success of a refrac both in vertical and horizontal wellbores. To have a successful design, we rely on simulation and modeling completed prior to the test. This session focuses on the types of modeling that give insights for designing a refrac job.
Common concerns that arise around horizontal well refracturing are often centered around stimulation effectiveness and analyzing the end result: How much lateral length coverage can be achieved? Do the isolation methods work? Has new rock been contacted? Pairing the proper diagnostic tools with refracturing opportunities can help the industry better address these concerns. This session will present effective diagnostics solutions and refrac case histories that help enable the sub-surface insight needed to optimize horizontal fracturing.
Refracturing technologies continue to evolve over time as more wells are restimulated and operators observe results. This session will focus on new technologies pushing the envelope in well restimulation. Furthermore, it will focus on new refracturing treatment methodologies being trialed based upon gaps in current refracturing processes. Lastly, this session will look at various diagnostics being applied to capture more information before, during, and after refracturing treatments in order to push the industry further up the learning curve.
In this closing session, summaries of the major points of the workshop will be presented and discussed.