Layer | Fill | Outline |
---|
Map layers
Theme | Visible | Selectable | Appearance | Zoom Range (now: 0) |
---|
Fill | Stroke |
---|---|
Collaborating Authors
This course discusses how to select a candidate that will benefit from a workover and the extra considerations involved in a treatment design. If you are considering the possibilities of re-fracturing operations, it is critical to understand all the various conditions that must be considered. These include: geomechanics of how production from this and offset wells may have changed in situ stresses, how proppant from the original frac may impact fracture propagation for the re-frac, and understanding specifically what must be accomplished by the re-fracture treatment (make longer fractures, inject stronger proppant to restore kfw, fracture new rock, …). This course is of interest to petroleum engineers involved (directly or indirectly) in candidate selection, design and evaluation of re-fracturing treatments. It would be beneficial for participants to have a basic understanding of hydraulic fracturing and well completion concepts.
This course covers the fundamental principles concerning how hydraulic fracturing treatments can be used to stimulate oil and gas wells. It includes discussions on how to select wells for stimulation, what controls fracture propagation, fracture width, etc., how to develop data sets, and how to calculate fracture dimensions. The course also covers information concerning fracturing fluids, propping agents, and how to design and pump successful fracturing treatments. Rock mechanics/in-situ stress aspects of fracturing Reservoir aspects of fracturing (How much fracture do I need?) Fracture design variables Perforating for fracturing Fracture diagnostics You will receive a sound engineering approach to fracture treatment design and a thorough analysis of fluid/proppant selection and ancillary fracturing topics. Production and completion engineers and field operations staff with basic to moderate knowledge or experience in designing, pumping or evaluating hydraulic fracture treatments can benefit from this course.
The course presents the fundamentals of hydraulic fracturing, along with addressing the general process, the "terminology," and many of the "real-world" problems - in a concise format. The overall emphasis of the day is how hydraulic fracturing fits-in with, is impacted by, or impacts geologic concerns, reservoir engineering, and operations. The day will provide a general familiarity with fundamentals of the complete hydraulic fracturing process. That is - why it works (or doesn't), where is it applicable, and what might be considered in order to "do better." Introduction – What is fracturing?
DISCLAIMER: Re-entry and re-stimulation of wells is an approach that has been successful for many operators and will be the focal point for the SPE Workshop: Refracturing: A Critical Resource to Maximize Economic Recovery on May 10-11 in Galveston, Texas. For attendees, and all interested parties alike, reviewing terms and process prior to workshops can enhance overall experience and aid in your understanding of more advanced topics covered. This SPE study session will prepare you for engaging conversations surrounding the enticing topic of Refracturing. Shales, and other low-permeability formations that require multistage completions are known for having a high production decline, leaving operators with the challenge of improving ultimate recovery. One of the primary ways to improve ultimate recovery is to refracture existing wells.
With the drop in oil prices, a large amount of capital spent on the maintaining of production and cash flow from drilling new wells is being diverted to lower cost recompletions, particularly refracturing. It only costs 15 to 25% of the original completions costs for refracturing but initial production can often be achieved again however with varying results in new production declines. Although this course will focus on multistage fractured horizontal wells, there is a rich history of vertical well refracturing in the last 40 years to simplify the leap to horizontals concepts and unique multistage horizontal challenges. Some background and statistics by industry will be revealed leading to an understanding of the refrac well inventory that is mounting for well candidate selection. Frac optimization and refrac design parameters will be discussed to understand how they differ from the initial primary well's production. Case studies of where refracturing or re-stimulation has worked will also be reviewed.