the 20th of September 2011
Imerys announces the inauguration of a lightweight ceramic proppant production unit in Andersonville, GA, USA
1st of April 2011
2010 Annual Report
the 21st of September 2010
Changing the Shape of Fracturing: New Proppant Improves Fracture Conducivity
Greg McDaniel, SPE, Apache Corporation; Jonathan Abbott, Fred Mueller, Ahmed Mokhtar, Svetlana Pavlova, and Olga Nevvonen, SPE, Schlumberger; and Thomas Parias and Jean André Alary, Imerys
SPE Annual Technical Conference and Exhibition, 19-22 September 2010, Florence, Italy
2010. Society of Petroleum Engineers
Hydraulic fracturing is used extensively to increase hydrocarbon production from oil and gas formations. Hydraulic fracture conductivity is a key parameter in optimizing the productivity of a well after the fracture treatment. The American Petroleum Institute (API) proppant permeability / fracture conductivity testing results are frequently used in industry fracturing models when selecting the proppant that provides the optimum fracture conductivity for a well’s particular reservoir properties. This design methodology invariably results in a lower than expected fracture conductivity and in many cases, lower than optimum well performance. The industry has recognized that actual fracture conductivity is often a small fraction of what would be expected by using API test results. Non-Darcy flow, multiphase flow, gel damage, stress cycling, fines migration, proppant embedment, proppant flowback, and fracture cleanup are some of the parameters that result in fracture conductivities significantly lower than those measured in an API conductivity test.
A new proppant was developed to improve the final fracture conductivity achievable with high-strength spherical proppants currently available in the market place. This new product is an elongated rod-shaped, high-strength particle with integrated proppant flow back control.
Initial field testing of the product was conducted in moderate permeability formations where production from prior fracture treatments indicated lower than optimum fracture conductivity. Production results from these field tests confirmed that substantial increases in fracture conductivity can be achieved. The large improvement seen in fracture conductivity can be attributed to increased porosity of the proppant pack and reduced fracture conductivity losses due to non-Darcy and multiphase flow effects.
Completely changing the typical geometry of proppants used in hydraulic fracturing is a viable option for improving the conductivity of hydraulic fractures to a point not currently obtainable with spherical proppants.
Click here to access the full paper via the SPE eLibrary
20 Septembre - 22 Septembre 2010
2010 ATCE, SPE Annual Technical Conference and Exhibition - Florence, Italy
Imerys Minerals for the Petroleum Industry is an exhibitor at this event
15th of May 2010
Imerys Minerals for the Petroleum Industry launches its new website
1st of April 2010
2009 Annual Report
15th of February 2010
Imerys Announces 2009 Results