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Showing 1 to 10 of 10 for “"DFIT"”.
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A novel diagnostic fracture injection test workflow considering natural fractures
… of diagnostic fracture injection test (DFIT) are used in unconventional reservoirs to determine reservoir characteristics for future fracture design and production. DFIT consists of creating a minifrac by pumping small amounts of water and monitoring the pressure response. The presence …
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Evaluation of diagnostic fracture injection test (DFIT) and rate transient analysis (RTA) in Hereford field, northern DJ Basin
… data from diagnostic fracture injection test (DFIT). Then, I use the PKN model to several individual hydraulic fracture stages and interpreted the falloff data from such tests to obtain effective fracture permeability of the stimulated reservoir volumes. Finally, I evaluate the production data …
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Evaluation of diagnostic fracture injection test (DFIT) and rate transient analysis (RTA) in Hereford field, northern DJ Basin
… data from diagnostic fracture injection test (DFIT). Then, I use the PKN model to several individual hydraulic fracture stages and interpreted the falloff data from such tests to obtain effective fracture permeability of the stimulated reservoir volumes. Finally, I evaluate the production data …
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Differential Item Functioning on the International Personality Item Pool's Neuroticism Scale
… level by gender and three age ranges using the DFIT framework (Raju, van der Linden, & Fleer, 1993) This study found six items that displayed differential item functioning by gender and three items that displayed differential item functioning by age. No differential functioning at the test level …
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Assessing the Differential Functioning of Items and Tests of a Polytomous Employee Attitude Survey
… differential functioning of items and tests (DFIT) framework. Comparisons were made between managers and non-managers on the 'Management' dimension and between medical staff and nurse staff employees on both the 'Management' and 'Quality of Care and Service' dimensions. 2 out of 21 items from …
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Automated Estimation of ISIP and Friction Losses in Hydraulic Fracture Treatment Falloff Data
… of the diagnostic fracture injection test (DFIT) data. Furthermore, this study eliminates human bias and the subjectivity that accompanies the manual selection of shut-in pressure and ISIP. Finally, this study opens the door for performing spatial and statistical analysis for field data from …
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New Models and Analysis Techniques for Diagnostic Fracture Injection Tests
… Traditional fracture injection/shut-in tests (DFIT’s) play a critical role in this assessment; however, their applicability is limited in ultra-tight formations due to prolonged test durations. To overcome this challenge, pump-in/flowback tests have been employed to expedite the testing …
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3D modeling and characterization of hydraulic fracture efficiency integrated with 4D/9C time-lapse seismic interpretations in the Niobrara Formation, Wattenberg field, Denver Basin
… and calibrated to field diagnostic measurements (DFIT) and observations (microseismic and 4D/9C multicomponent time-lapse seismic). By incorporating the geological heterogeneity into the 3D hydraulic fracture simulation, a more representative response is generated that demonstrate the variability …
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THREE-DIMENSIONAL MODELING OF HYDRAULIC AND NATURAL FRACTURE INTERACTIONS AND ITS APPLICATIONS IN RESERVOIR STIMULATION
… near natural fractures and stress barriers. The DFIT results revealed that the interaction between the hydraulic and natural fractures impact the pressure transient behavior. Our results show that the closure of natural fractures which often precedes that of the HF could result in a signature …