Direct numerical simulation (DNS) can be used to extract information implicit in the equations of fluid-particle motion. We have investigated the lift-off of a single particle and many particles in pressure driven flows by 2D DNS (N.A. Patankar, Huang, Ko & Joseph 2001a, Ko, N.A. Patankar & Joseph 2001, Joseph, & Ocando 2001, Choi & Joseph 2001, N.A. Patankar, Ko, Choi & Joseph 2001b). We show ...

The surfactant-polymer-based (S/P) fracturing fluid combines the advantages of surfactant-based and polymer-based fluids. In this study, synergistic tackifying cationic surfactants carboxymethyl hydroxyethyl cellulose potential application in hydraulic was investigated. Firstly, cetyltrimethylammonium chloride (CTAC) salicylic acid (SA) with a weight ratio 4:1 were optimized as main agent small...

The transport and placement characteristics of proppant in rough fracture is great significance for optimizing fracturing parameters making to the deep part effective support. This paper scans surface morphology rock samples after fracturing, generates based on scanned data, uses high-order interpolation function generate with different roughness, establishes a numerical model roughness Euler-E...

In industry, the porosity of petrochemical reservoirs is measured frequently by coring and is an important property when trying to determine if a site is appropriate for drilling. Porosity can also be used in waste water treatment in order to determine if a material is ideal for water purification in industrial or residential applications. The purpose of this experiment was to simulate a oil re...

It is known that much of the technology aimed at intensifying fluid inflow by means hydraulic fracturing involves use proppant. In order to transport and position grains in fracture, a uniform supply proppant with given concentration into ensured. The aim operation eliminate occurrence distortions injection program HF. A mathematically accurate linear increase under conditions possible only if ...

The response of deformable fractures to changes in fluid pressure controls phenomena ranging from the flow of fluids near wells to the propagation of hydraulic fractures. We developed an analysis designed to simulate fluid flows in the vicinity of asperity-supported fractures at rest, or fully open fractures that might be propagating. Transitions between at-rest and propagating fractures can al...

Supercritical CO2 fracturing has unique advantages for improving unconventional reservoir recovery. can penetrate deep into the and increase reform volume, it is less damaging to easy flow back. However, when supercritical flows as sand-carrying fluid in fracture, settlement of proppant still worth studying. Based on study density viscosity properties, assuming that been pressed out vertical cr...