CARBO Ceramics Resources
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Successful Hybrid Slickwater Fracture Design Evolution - An East Texas Cotton Valley Taylor Case History (SPE 110451)
As the development of tight/unconventional and partially depleted gas reservoirs has increased, so has the demand for more innovative hydraulic fracture designs. Operators are increasingly placing proppant with slickwater, linear gel or hybrid fracture designs. Read the complete resource
Category: CARBO Benefits Improved Frac Conductivity,Oil Wells Sub Category: 6,000 - 10,000 ft depth
Effect of Incomplete Fracture Fill Up at the Wellbore on Productivity Ratio (SPE 4677)
Mobil demonstrated the use of “controlled screen out” designs in 1973.These screenouts were intentionally caused by lowering the injection rates and simultaneously increasing the proppant concentration to insure a fully packed fracture near wellbore.
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Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: Less than 6000 ft depth
The Application of Massive Hydraulic Fracturing to the Tight Muddy "J" Formation, Wattenberg Field, Colorado (SPE 5624)
In the very low perm Wattenberg Field (0.05 to 0.005 md), massive treatments exceeding 1 million pounds of sand were attempted. "Proppant pillars" were attempted, with slugs of sand laden stages followed by equal sized clean fluid stages.
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Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: 6,000 - 10,000 ft depth
Mini Massive Frac - A Stimulation Technique for Low Porosity, Low Permeability Zones (SPE 6627)
In the Ravencliff sandstone of West Virginia, a wells was frac'ed with up to 8 ppg sand, achieving three times the flowrate of typical offset wells with more modest stimulation treatments.Read the complete resource
Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: Less than 6000 ft depth
Practical Pressure Analysis in Evaluation of Proppant Selection for Selection for the Low-Permeability, Highly Geopressured Reservoirs of the McAllen Ranch (Vicksburg) Field (SPE 7925)
In recent years, the state-of-the-art concerning massive hydraulic fracturing has progressed substantially in low permeability, highly geopressured reservoirs typical of many deep wells in South Texas. Read the complete resource
Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: Greater than 10,000 ft depth
A Case History of Massive Hydraulic Refracturing in the Tight Muddy 'J' Formation (SPE 7936)
Initial fracs with 150,000 lbs sand provided low initial rates and rapid decline. On new wells, production increased with treatments as large as 1.25 million lbs. Refracs of wells in the better part of the field were found to payout in as little as 4 months with a gas price of $1.37/mcf.
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Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: Tight/Unconventional Reservoirs
Interpretation of Buildup Data Obtained From MHF Wells In Northern Germany (Paper 11605)
Apparent fracture conductivities measured in Germany were 80% lower than the reference values due to non-Darcy flow. Apparent fracture lengths were approximately 50% of the designed length. Production forecasts which ignore non-Darcy effects will be unrealistically optimistic.
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Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: Tight/Unconventional Reservoirs
Case History of Large-Volume Fracture Stimulations in a West Texas Waterflood (SPE 11930)
In the 1970’s, wells were stimulated with 65,000 lbs of sand in 105,000 gallons of gelled water. Initial production benefits were frequently not sustained.
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Category: CARBO Benefits Improved Frac Conductivity,Oil Wells Sub Category: Less than 6000 ft depth
An Investigation of a High-Strength Proppant Tail-In at McAllen Ranch Field (SPE 11935)
In the McAllen Ranch Field in Texas, Lindley and McGhee compared the production from wells containing 100% HSP and wells stimulated with sand/HSP tail-in. Fractures containing 100% HSP sustained much higher fracture flow capacity than sand fractures with HSP tail-ins.
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Category: CARBO Benefits Improved Frac Conductivity,Gas Wells Sub Category: Tight/Unconventional Reservoirs
Successful Stimulation of the Olmos Formation Using Oil-Base Fluids and High-Proppant Concentrations (SPE 13817)
Initial Olmos fracs with water based fluids and low proppant concentrations were not very successful, with short apparent fracture lengths and rapid decline. Well #5: Large refrac at 12 ppg provided 13-fold increase in oil rate, and 13-fold increase in 180 day cumulative production.
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Category: CARBO Benefits Improved Frac Conductivity,Oil Wells Sub Category: 6,000 - 10,000 ft depth