1. Strategy for Successfully Drilling and Completing Wells on a Multi-Well Pad Alan Vasicek Apache Corporation

2. Alan Vasicek Bio Introduction Apache Corporation
Worldwide Drilling – Houston, TX
Global Directional Drilling Advisor
DD Manager, DDC, Sr DD, M/LWD, Multi-laterals – 34 yrs
BS Petroleum Engineering, University of Texas
Strong driver of drilling optimization, performance improvement, new technology and applying engineering principles to directional drilling
ConocoPhillips Ekofisk/Eldfisk offshore Norway project with extensive anti-collision work

3. MultiWell Pad Challenges
Old vertical wells w/poor or no surveys
Existing and future surface facilities
Existing pipelines
On-Lease pads and Off-Lease pads
Offset operators drilling and completions activities – current and future
Limitations on directional work for production – max doglegs, max inclination and still get wellbore displacement
How many wells on a lease? On each pad?
Just everyday Permian drilling challenges – losses, water flows w/H2S, target TVD changes

4. Arial footage for Lynch A HZ (Wildfire) acreage

5. Lease lines and pipelines overlaid
Red: Pipeline
Pink: Section Line

6. First and last take points are acquired from Geology
Red: Pipeline
Pink: Section Line

7. First iteration - Does not take into account future wells, facilities or additional surface hazards

8. Planning Workflow for Consecutive Iterations
High definition drone footage is added to find additional surface hazards
Collaborative work w/ facilities, completions, etc… for optimal location placement
FTP and LTP from Geology
Drilling determines surface location
Future possible wells (2 – 3 years out) added to well planning scenario
Wolfcamp pad locations moved farther south to avoid collision issues and cost w/ future Spraberry wells
Planning time reduced significantly

9. Lynch SHL Proposal Latest Iteration
Original Plan for Facilities Line
Discoverable Pipeline
Discoverable Pipeline
Facilities Reroute to Accommodate Future Spraberry Pad
Lynch SHL Proposal Latest Iteration
Lynch A HZ Wells (Rectangular Targets)
Pad 1: #30HM, #31HM, #32HM Pad 2: #33HM,#34HM, #35HM, #36HM Pad 3: #37HM, #38HS, #39HS
Pads 4, 5, 6: 12 future Spraberry wells (Yellow and White Circle Targets) Red: Pipeline, Pink: Section Line, Gold: Facilities

10. Opposing Laterals with offset operator Potential 28 wells in half section
Apache Pads to North
Drilling South
Apache FTP’s
Offset FTP’s
Offset Pads to South
Drilling North

11. Opposing Laterals with Offset Operator

12. Anti-Collision Control
Three target zones combined with opposing curve wellbores (from offset operator) causes potential anti-collision and space issues
Opposite side wellbores must “wrap” around opposing wellbores to drill in same vertical plane
Have a detailed Anti-Collision and Survey policy
Ensure everyone understands and abides by policy – field and office staff, operator and DD service company
Be aware of SF and EOU for survey tools – tighten EOU’s if needed
“Drill the Line” – one drifting well bore off course can have serious consequences!!!

13. In-Field Referencing Results

14. Thank You