Advanced Techniques for Optimizing Horizontal Well Fracturing

Course Duration: 4 days

Oct 15 ~ 18, Houston

Instructor: Dr. Ali Daneshy

3.2 CEU
Participants receive a one-year subscription to Hydraulic Fracturing Journal

Controlled production interference is necessary for economic recovery of oil and gas from unconventional reservoirs. Present practices of fracturing horizontal wells often result in random and unpredictable levels of production interference, together with costly complications during drilling and completions operations. Their main causes are uncontrolled interactions between fractures in the same well (intra-well) and in adjacent offset wells (inter-well). This advanced level course offers a comprehensive coverage of completion, fracturing, and production steps that can be taken to control the process and alleviate the problems.

The full course is a combination of two parts that can be taken together, or separately. Together, they offer a more comprehensive tool for optimizing horizontal well production results.

Who should attend.This course is designed for people with some basic familiarity with
hydraulic fracturing who are keen on applying the latest technologies for better production results.

Course Content.The course emphasis is on practical application of the learnings in the selection and design of completion system and hydraulic fractures. Course contents are supported with actual field case histories.

Production Interference: Cause and Effect (3 days)
The main cause of negative production interference in horizontal wells is uncontrolled intra- and inter-well interactions between fractures. These interactions can create temporary or long term hydraulic connections between adjacent wells, with varying levels of production interference. They are caused by stress shadowing, fracture shadowing, and Dynamic Active Fracture Interactions (DAFI). The course offers a systematic review of these topics and completion, fracturing, and production steps that can reduce their unpredictable negative impact. It covers application of zipper fracs and simul-fracs in the process.

Effect of natural fractures
Coverage includes general discussion of the production effects of the different types of natural fractures and mechanics of their activation. It presents ways of estimating the extent of their presence in the reservoir and their impact on production interference.

Analysis of fracturing data
The course teaches the methodology for rational analysis of actual field well interference data and what can be learnt about the in-situ stress environment, contribution of natural fractures, fracture propagation pattern, and the extent of future production interference.

Horizontal well re-fracturing (1 day)
Re-fracturing is a cost-effective tool for boosting declining production and EUR. Course contents cover candidate selection, chemical and mechanical diversion systems, design of re-fracs, and practical considerations to enhance successful execution.