Abstract As the associated gas of tight reservoirs, natural is abundant and noncorrosive, which more suitable for development oil reservoirs in China. However, mechanism injection unclear, channeling serious after fracturing. The water-alternating-gas (WAG) flooding an effective means to delay improve recovery. Therefore, it significant clarify preventing recovering by water-alternation-natural...

It is necessary to improve oil production from reservoirs. Various methods have been proposed increase extraction reservoir. Each method has specific challenges. In this research, the effect of water and gas injection in Azadegan reservoir analyzed. field located south Iran. study, water, immiscible alternating injected its on enhanced recovery investigated. Finally, a comparison between result...

abstract three pear genotypes (nazkeh, lasoreh and qevilah), grown in 2l containers, were studied under four irrigation regimes in order to evaluate the leaf relative water content (rwc), photosynthesis, leaf gas exchanges and plant dry weight induced by water stress. control treatment everyday was irrigation. irrigation was practiced when soil water potential reached at -0.4, -0.8, and -1.2 mp...

objective(s) herbal waters are extensively used in most parts of iran including mashhad. visiting a patient with total blindness due to daily ingestion of around 200 ml of herbal water (plant forty water) per day for six months was the rational for methanol determination in all herbal waters available in mashhad markets. materials and methods a total of two hundred and nineteen bottles of herba...

Carbon dioxide storage combined with enhanced oil recovery (CCS-EOR) is an important approach for reducing greenhouse gas emissions. We use pore-scale imaging to help understand CO2 and during CCS-EOR at immiscible near-miscible injection conditions. study in situ flooding oil-wet reservoir rock elevated temperature pressure using X-ray micro-tomography. observe the predicted, but hitherto unre...

The Enhanced Oil Recovery (EOR) method aims to increase oil production. One of the EOR methods is CO2 injection. injection mechanism by expanding volume oil, reducing viscosity, and mobility ratio. purpose study was compare recovery factor gain in waterflood, Miscible Continuous injection, WAG with a three-dimensional simulation methodology using CMG Compositional software CW Field. From field,...

Abstract Three-phase flow in porous media is encountered many applications including subsurface carbon dioxide storage, enhanced oil recovery, groundwater remediation and the design of microfluidic devices. However, pore-scale physics that controls three-phase under capillary dominated conditions still not fully understood. Recent advances three-dimensional imaging have provided new insights in...

METHODS OF ELECTROFISHING have been developed successfully for use in fresh-water ponds and streams, but this equipment is not effective in sea water because the high conductivity of salt water greatly changes the power requirements (Smolian, 1944). If this obstacle can be overcome, it is reasonable to assume that electrofishing can be conducted in the sea with a success which would be at least...