Insight
Mending fractures: a technical update on tight oil completions
Report summary
The 2019 SPE Hydraulic Fracturing Technology Conference sought to address the biggest technical risk facing US tight oil projects, parent-child well interference. The concern around production degradation has caused a move toward more controlled, customized completions. Operators are building data-rich models to understand subsurface and fracture dynamics. This predictive approach could lead to real-time completion optimisation. We investigate how hydraulic fractures interact, along with the latest engineering strategies and tactics to limit well-to-well communication.
Table of contents
- Parent-child interaction
- Frac hit mitigation strategies
- Customized completion design
- Reservoir and fracture modelling
- Responding to the data
- Appendix: asymmetric propagation illustrated
Tables and charts
This report includes 4 images and tables including:
- In the Delaware Basin, EOG's Lea county Wolfcamp A program shows the effects of maturing acreage. Productivity decreased from 2016 to 2018, typically with 400 to 600 foot well spacing.
- Characterisations of fracture interactions
- Water volume dominates fracture surface area creation, but only part of the induced fracture is propped open. Enhanced matrix and stress extend farther into the formation.
- Depletion from producing wells attracts child well completions. The resulting asymmetric fractures overlap stimulated rock volume near the parent, leaving a non-productive area on the opposite side.
What's included
This report contains:
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