Paradox basin utah
•
0 likes•126 views
Presentation to the Wyoming Geological Association - Paradox Basin history, tectonics, paleoenvironment, structure, reservoir, drilling
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Paradox basin utah
Similar to Paradox basin utah (20)
More from Mike Bingle-Davis
More from Mike Bingle-Davis (16)
Recently uploaded
Recently uploaded (20)
Paradox basin utah
- 1. UTAH Mike Bingle-Davis Kirkwood Oil and Gas PARADOX BASIN
- 3. HISTORY • Potash • Uranium • Radioactive waste storage HistoryHistory • Texas Gulf Sulphur • Open 1963 • 1964 disaster • 25 trapped, 7 survived
- 4. HISTORY • First well 1891 Utah Oil Co. TD 1,000’ dry • Initial play 1908 – Mexican Hat oil field TD 225’ • Expensive for the time at $5.00/foot • Cumulative Oil 94,500 BBLS 1978 History
- 5. HISTORY • Shafer #1 fire • December 8, 1925 • 84 ft. derrick 75 ft. from river • No roads, supplies transport by barge • Crew heard explosion, flames 300 feet into air • Barge brought firefighting equipment to location • No additional information History Utah State Historical Society
- 6. STRATIGRAPHIC COLUMN • 4 main Paradox Stages • Correlation between 29+ evaporate cycles Paleoenvironment Missing Section Missing Section Missing Section Baars and Stevenson, 1982
- 7. STRATIGRAPHIC COLUMN – TYPE LOG • 4 main Paradox Stages • Correlation between 29+ evaporate cycles Paleoenvironment
- 8. PALEOENVIRONMENT - STRUCTURE Onion Creek Diapir Paleoenvironment
- 9. PALEOENVIRONMENT • Onion Creek diapir • Salt intrusion • Few exposures of the Cane Creek Clastic #21 Caprock of the Onion Creek salt wall – UTG OFR-543 Paleoenvironment
- 10. PALEOENVIRONMENT Paleoenvironment • Deposited in restricted foreland basin (Middle Pennsylvanian, 309 million years ago) • 5-10 degrees north of equator, hot and arid • Sea level swings 100-200 ft. • Regression results in hypersaline environment and salt deposition • Transgression allows for dolomite, silica silts deposition and high TOC shale • Cycle repeated 29x in Cane Creek Unit area and up to 35x in basin over 4 million years
- 11. PALEOENVIRONMENT • Halite, potash • Dolomites • Anhydrites • Shales Paleoenvironment
- 12. PALEOENVIRONMENT • Facies stratigraphy of evaporate cycle 2 • Transgression to regression occurs during black shale deposition • Also reversal of facies Modified from Raup and Hite, 1992 Paleoenvironment
- 13. PALEOENVIRONMENT Type log from Coors Energy Coors USA 1-10LC (T26S R20E Sec. 10) Paleoenvironment
- 14. TECTONICS • Ancestral Rockies – Uncompahgre Uplift • Constrained northern and southern openings Tectonics
- 15. TECTONICS - MOAB FAULT Tectonics
- 16. BASINWIDE TECTONICS Salt anticlines Nuccio and Condon, 1996 Tectonics
- 18. RESERVOIR • Cane Creek (Clastic #21) target • Comprised of A, B, and C intervals Reservoir
- 19. A-Interval • Mostly hetrolithic with limestone, dolomitic mudstone and abundant anhydrites. It can also include porosity in dolomite, bioturbated limestones, and finely laminated (possibly algal) shales. • Numerous thin fractures are filled with clay or anhydrite and wider fractures with halite • It has a strong petroliferous odor but lacks permeability and porosity due to the anhydrites RESERVOIR
- 20. RESERVOIRReservoir B-Interval • Primary productive zone in the Cane Creek, due to the dolomitic mudstone lacking much of the anhydrite seen above and below. • Abundant siltstone and very fine grained sandstone are the dominant reservoir. • Vertical fractures range in size and are commonly halite filled.
- 21. RESERVOIR • Massive dolomitic mudstone with abundant anhydrites, sandstones, and shales. • The C interval is similar to the B zone but is generally thinner. Reservoir
- 22. RESERVOIR • USGS 2012 assessment – 103 million barrels of oil in Cane Creek clastic • Thermal maturity indicate peak/late in north and central with early maturity in south Reservoir
- 24. RESERVOIR • Dolomites 8-13% porosity • 10-50 microdarcies permeability • 20-35% water saturation • Up to 44% TOC • 0.938 psi/ft formation pressure gradient • Average depth to Cane Creek – 7,000 ft. Reservoir
- 25. DRILLING • Normal pressures above, normal pressures below • Dolomitic fracture fed system • Set surface to the #2 clastic • Oil based mud Drilling
- 26. DRILLING • Pressure – Managed pressure drilling – MPD provides a closed-loop circulation system in which pore pressure, formation fracture pressure, and bottomhole pressure are balanced and managed at surface. – Drilling fluid is supplemented by surface backpressure, which can be adjusted much faster in response to downhole conditions compared with changing mud weights conventionally Drilling
- 27. CASE STUDY: TMU 16-17 • API 43-037-50003 • San Juan County, Utah • Sec. 16, T29S R22E • Cored Cane Creek Member of the Paradox Fm. • 7,683-7,744’ Drilling
- 28. Drilling
- 29. HELICAL CT SCAN – ASSIST IN FRACTURE ORIENTATION Drilling
- 30. FRACTURES • Chart is of Fisher concentrations plot of corrected dip and dip azimuth readings of coring induced breaks and partings • Concentrations show relative distribution of the pole plot points with the outer border of the circle plot coinciding with a 90o dipandthe circle-center being 0o dip Drilling
- 33. KEY LEARNING – FRACTURE ANALYSIS Drilling
- 34. CASE STUDY: CCU 7-1 • API 43-019-50010 • Grand County, Utah • Sec. 7, T26S R20E • Cored Cane Creek Member of the Paradox Fm. • 7,590-7,671’ Drilling
- 35. Drilling
- 36. DATA INTEGRATION – ROCK ANALYSIS (CCU) Drilling
- 37. KEY LEARNING – DRILLING FLUID Drilling Produced Water – 30 minutes (L) , 60 minutes (R) Initial State
- 38. KEY LEARNING – DRILLING FLUID Drilling Distilled Water – 30 minutes (L), 60 minutes (R) Initial State
- 39. KEY LEARNING – DRILLING FLUID Drilling TX350 Mineral Oil – 30 minutes (L), 60 minutes (R) Initial State Left: Increasing hydrocarbon residue Right: Location changed due to inundation of residue
- 40. PRODUCTION • Best well in US 2012 • 802.9 MBO / 2 years • Payout 6 months • IRR 171% • EUR 1.25 MMBOE Drilling
- 41. CONCLUSIONS • Rich environmental history • Complicated stratigraphy • Unique tectonics – unique basin • Watch salts – mobilization • Seismic integral to understanding and drilling • Fault/fracture driven – better understand • Drilling fluids
Editor's Notes
- Salt collapse towards the east caused the Paradox Valley