SPE European Formation Damage Conference 2005
DOI: 10.2118/94649-ms
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Fracture Face Damage – It Matters

Abstract: The poorer-than-expected performance of some fracturing treatments has been an issue for decades. Considerable effort has been devoted to improved modeling of fracturing treatments so that improved expectations can be provided. Fracturing fluids have been modified to enhance cleanup. Proppant conductivity studies have lead to a better understanding of fracture performance. Yet, there are still many treatments, particularly in low-permeability gas wells, that defy efforts to clean up quickly and to produce at t… Show more

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Cited by 37 publications
(8 citation statements)
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“…Following the procedures mentioned in stage 1 above, a corresponding effective permeability of oil of 121.2 μD is obtained after performing the steady-state flow experiment. Based on this value, a representative capillary pressure of 14 psi at median pore throat radius is calculated using an average of values from equation (1) of Gdanski’s paper and equation (5) of Gao-Hu’s paper . Derivatively, this iterative approach provides a final selection for the operating pressure drop of Δ P = 70 psi that is chosen to be applied across all of the rocks for stage 3 of experiment 2.…”
Section: Experimental Methodologymentioning
confidence: 99%
See 1 more Smart Citation
“…Following the procedures mentioned in stage 1 above, a corresponding effective permeability of oil of 121.2 μD is obtained after performing the steady-state flow experiment. Based on this value, a representative capillary pressure of 14 psi at median pore throat radius is calculated using an average of values from equation (1) of Gdanski’s paper and equation (5) of Gao-Hu’s paper . Derivatively, this iterative approach provides a final selection for the operating pressure drop of Δ P = 70 psi that is chosen to be applied across all of the rocks for stage 3 of experiment 2.…”
Section: Experimental Methodologymentioning
confidence: 99%
“…All these processes characteristically indicate the oil recovery associated to the invasion of the fracture fluid into the matrix. On the contrary, the invasion of the fracture fluid into the matrix could even lead to the formation damage resulting from proppant materials deposition, clay swelling, or even water-block formation due to capillary entrapment of water in the vicinity of the fracture. …”
Section: Introductionmentioning
confidence: 99%
“…1 with values of a1 = 1.86, a2 = 6.42, and a3 = 0.50 at a porosity of 0.08. In the absence of permeability-dependent data for other cases, a3 was set to the default value of 0.5, as indicated by the standard Jfunction (Gdanski et al 2005). …”
Section: Description Of Novel Me Surfactantmentioning
confidence: 99%
“…It remains unclear whether the large volumes of water injected into shale formations could lead to a reduction in shale gas production. Researchers conducted various experiments to observe the permeability evolution after water injection and found that the maximum loss of the original gas permeability could reach 99%. Other researchers applying numerical simulations suggested that a loss of 95–99% of the original permeability would drastically affect gas production. Spontaneous imbibition of fracturing fluids into shale rocks may be the main mechanism responsible for water retention and the low recovery. Thus, a deep understanding of this mechanism can not only promote shale gas reservoir production but can also protect the ecological environment …”
Section: Introductionmentioning
confidence: 99%