1 / 12

Hydraulic Fracture Optimization Study

Hydraulic Fracture Optimization Study. Goals: Understand relationships between fracture design and economics: History match previous fractured wells understand field wide matrix permeabilities and fracture lengths Understand importance of dimensionless conductivity

mave
Download Presentation

Hydraulic Fracture Optimization Study

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hydraulic Fracture Optimization Study Goals: • Understand relationships between fracture design and economics: • History match previous fractured wells • understand field wide matrix permeabilities and fracture lengths • Understand importance of dimensionless conductivity • Fracture conductivity - variable • Fracture length

  2. Goals: • Design fractures that yield optimal production profiles • Optimal economic fracture conductivity and length • Include safety factor for uncertain matrix permeability • Post Fracture Analysis

  3. 350 Acre Single Well Hydraulic Fracture Grid

  4. Pressure Profile For 50 foot Hydraulic Fracture

  5. Effect of Fracture Conductivity • No effect over 100 fold difference in Kf*H

  6. Effect of Fracture Length • Large Influence – 0 versus 50 versus 100 feet

  7. Effect of Under Designing Fracture in Good Perm. Area • Production losses smaller • For 600 versus 1200 foot fracture half length • Production acceleration reduced

  8. Effect of Under Designing Fracture in Low Perm. Area • Production losses larger • For 600 versus 1200 foot fracture half length • 20% lost reserves at year 5 • Production acceleration greatly reduced

  9. History Match of Post Fracture Production • Include tubing curves to match tubing pressures • Needed because no bottom hole buildup data

  10. History Match of Post Fracture Production • Match tubing pressures

  11. Predictive runs - 17- 20% recovery factor in 10 years

  12. Hydraulic Fracture Optimization Study Conclusions • Fracture conductivity not important • Fracture length critical to design • Fracture length should be overdesigned unless matrix perm known with certainty because: • Production acceleration losses are large • Reserves lost – 20% over 5 years

More Related