Numerous studies have been presented, mainly in the petroleum literature, about permeability impairment of reservoir formations due to rock/drilling fluid interactions. For example, Glenn et a1;(1957) showed that mud particles can invade to an appreciable depth into the pores of a porous medium, form a "filter cake" in the pores, and cause a substantial reduction in the permeability of the inva...

Nanoparticle drilling fluids have the potential to minimize wellbore instability problems. There is a need for development of new generation handle problems especially in lost circulation zones and shale A rheological model needed accurately describe rheology nano base fluid because limited experimental data are currently available using carbon particles water mud Inability current methods addr...

Exploiting pattern formation - such as that observed in nature - in the context of micro/nanotechnology could have great benefits if coupled with the traditional top-down lithographic approach. Here, we demonstrate an original and simple method to produce unique, localized and controllable self-organised patterns on elastomeric films. A thin, brittle silica-like crust is formed on the surface o...

We present an analytical solution for the scattering of linear progressive waves by a surface rectangular obstacle above muddy seabed. The bottom cohesive mud is assumed to act as Newtonian fluid, and thickness layer considered be comparable Stokes boundary thickness. Our results based on matched eigenfunction expansions incorporate combined effects obstacles fluid bottom. By reducing or dimens...

Formate drilling and completion fluid system is a new type of clean organic salt brine system which has been developed from inorganic salt brine drilling fluid system. It is beneficial to protecte and find hydrocarbon reservoir. Due to the solid free system, the damage of solid phase particles on reservoir, especially low permeability oil and gas layer, can be greatly eliminated, at the same ti...

Mudboils are round to elongate, 1-3 m diameter bare soil patches that form on perennially frozen till. marine clayey silt, colluvium. or other poorly sorted sediments (muds) with significant silt and (or) clay content. In Keewatin these muds have low liquid limirs (<ZM) and limited plasticity indices (<It)%). Natural moisture contents are very near the liquid limit .w thal rhe muds liquefv and ...

The South American coast between Brazil and Venezuela is affected by longshore migrating mud banks derived from the fine-grained Amazon sediment discharge. Onshore mud migration prevails over shallow ‘bank’ areas alternating alongshore with deeper ‘inter-bank’ areas. The transport on the inner shelf, and attachment to the shoreline, of this migrating mud has been attributed mainly to wind waves...

A method for measuring in situ compressional wave attenuation exploiting the spectral decay of reflection coefficient Bragg resonances is applied to fine-grained sediments New England Mud Patch. Measurements layer-averaged a 10.3 m mud layer yield 0.04 {0.03, 0.055} dB/m/kHz (braces indicate outer bounds); twice as large at site with 3.2 thickness. It shown that both results are heavily influen...

A numerical model is extended to investigate the nonlinear dynamics of surface wave propagation over mud in presence currents. phase-resolving frequency-domain for wave-current interaction improved account modulations due viscoelastic arbitrary thickness. The compares well with published laboratory data and performs slightly better than viscous mud-induced damping mechanism. Monochromatic rando...