Results 11 to 20 of about 1,447 (180)
Attitudes, Norms, and Control: What Is Shaping Fijian Children's Physical Activity and Screen Time Behaviours? [PDF]
Child Care Health DevABSTRACT Background Only half the children in Fiji meet both physical activity (PA) and screen time (ST) recommendations. Understanding factors associated with meeting these recommendations is important to inform the development of policies and programmes to encourage healthy behaviours.
Ryan ST +4 more
europepmc +2 more sources
Simulation study of huff-n-puff air injection for enhanced oil recovery in shale oil reservoirs
Petroleum, 2018 This paper is the first attempt to evaluate huff-n-puff air injection in a shale oil reservoir using a simulation approach. Recovery mechanisms and physical processes of huff-n-puff air injection in a shale oil reservoir are investigated through ...
Hu Jia, James J. Sheng
doaj +1 more source
An Experimental Investigation of Feasibility of Gas Huff and Puff for Recovering Crude Oil with Different Viscosities [PDF]
Journal of Petroleum Science and Technology, 2017 Investigating multi cyclic gas (N2 and CO2) huff and puff have been conducted by long sandpack simulations with four different crude oils from Jiangsu oilfield.
Jiang Ping +6 more
doaj +1 more source
Recovery mechanisms and formation influencing factors of miscible CO2 huff-n-puff processes in shale oil reservoirs: A systematic review [PDF]
, 2023 Shale oil production is vital for meeting the rising global energy demand, while primary recovery rates are poor due to the ultralow permeability. CO2 huff-n-puff can boost yields by enabling key enhanced oil recovery mechanisms. This review examines the
Jia, Chengzao +5 more
core
Geofluids, 2021 The CO2 huff-n-puff is an effective substitute technology to further improve oil recovery of natural fractured tight oil reservoirs after water flooding, for its high displacement efficiency and superior injectivity.
Zhang Jie +6 more
doaj +1 more source
Modeling interwell fracture interference and Huff-n-Puff pressure containment in Eagle Ford using EDFM [PDF]
, 2020 Shale field operators have vested a tremendous interest in optimal spacing of infill wells and further fracture optimization, which ideally should have as little interference with the existing wells as possible. Although proper modeling has been employed
Fiallos Torres, Mauricio Xavier
core +1 more source
Energies, 2023 Heavy oil reservoirs are often characterized by high viscosity and poor mobility, which is more complex with the presence of bottom water. The conventional vertical well development method has low oil recovery efficiency and limited controlled reserves ...
Zhenhua Xu +8 more
doaj +1 more source
Energies, 2023 The current oil recovery of the Lucaogou shale oil reservoir is predicted to be about 7.2%. It is crucial to explore improved oil recovery (IOR) technologies, and further experimental and field research needs to be conducted to study the complex ...
Yaoli Shi +8 more
doaj +1 more source
Geofluids, 2021 The injection from a well to other wells can be difficult in extralow-permeability oil reservoirs. In order to address this issue, a method of cyclic huff-n-puff with surfactants based on complex fracture networks for a single horizontal well was ...
Bao Cao +9 more
doaj +1 more source
Optimization of huff-n-puff gas injection in shale oil reservoirs
Petroleum, 2017 Earlier studies show that huff-n-puff injection is preferred to continuous gas flooding to improve liquid oil production in shale oil reservoirs. Compared to gas flooding, huff-n-puff has more operational parameters to optimize so that liquid oil ...
James J. Sheng
doaj +1 more source