Workers involved in hydraulic fracking processes are exposed to various types of chemicals and dusts in their workplaces, such as proppants, which hold open the fissures created in the fracking process. Recently, ceramic proppants have been developed that may be less hazardous to workers than traditional proppants. Pulmonary function testing of workers producing ceramic proppant was used to ass...

The study focuses on the rheological behavior of a fluid based viscoelastic surfactant (Surfogel grade D, type 70-100, produced by JSC "Polyex") in wide range strain rates. This is used for hydraulic fracturing technology as proppant-carrying and proppant-retaining order to enhance oil recovery, including those with hard-to-recover gas reserves. Quasi-static experiments determine values dynamic...

Nearly 70 years old, hydraulic fracturing is a core technique for stimulating hydrocarbon production in a majority of oil and gas reservoirs. Complex fluids are implemented in nearly every step of the fracturing process, most significantly to generate and sustain fractures and transport and distribute proppant particles during and following fluid injection. An extremely wide range of complex fl...

Hydraulic fracturing is a technique that can provide space for oil and gas flow by pumping fluid into reservoir to fracture rock filling proppant create fractures or nets [...]

Formation pressure gradually decreases with fracturing fluid flowback and gas production. Due to the stress sensitivity of fractures, permeability artificial fractures after becomes lower, which significantly affects well productivity. This paper focuses on two questions: (1) proppant-containing different roughness (2) tight productivity considering sensitivity. Two types fracture samples, smoo...

Tight hydrocarbon reservoirs require stimulation to improve the recovery of oil and gas resources. Hydraulic fracturing is a technique extensively employed in industry generate fractures including primary secondary fractures. To keep these open, proppants are used. However, some ractures very narrow for conventional penetrate prop, hence smaller called micro-proppants required. These can hydrau...

Limited-entry fracturing (LEF) technology is a widely used method to realize the simultaneous propagation of multiple fractures in horizontal wells. The key this create high perforation friction maintain treatment pressure wellbore and uniform fluid entry multi-fractures; however, cannot be effectively maintained due serious erosion effect. Considering that current laboratory studies mostly sma...

Hydraulic fracturing is an important technology for the stimulation of oil and gas reservoirs. Conventional based on “sand-carrying” faces some challenges such as sand plugs; incompatibility with well completion method; damage to reservoir caused by incomplete gel-breaking fluid; solid proppants inefficiently turning corner in complex fracture networks, so on. In this paper, a novel self-genera...

Abstract Proppant embedment is a serious issue that reduces fracture width and conductivity. The paper presents the results of experiments on phenomena shale rock from region Baltic Basin, which regarded as an unconventional gas deposit. A novel laboratory imaging procedure was implemented to proppant visualization. tests were performed for conditions corresponding average reservoir occurring i...

Proppant transport is a critical physical process in hydraulic fracturing which has been extensively used for reservoir stimulation petroleum engineering. Proppants injected together with fluid provide structural support to the stimulated fracture network and prevent them from closing after flowback. Hence, final proppant distribution networks affects directly effectiveness of fracturing. Owing...