...1 NEW ACHIEVEMENTS CONCERNING TEMPERATURE EFFECTS ON MUD RHEOLOGY AND HYDRAULIC PERFORMANCE WHILE DRILLING R. Romagnoli, Politecnico of Torino, Italy. This paper was presented at the 13 th Offshore Mediterranean Conference and Exhibition in Ravenna, Italy, March 29-31, 2017. It was selected...

... describes the development of innovative drilling fluids specific to these well conditions. The key fluid properties to ensure the success under these conditions are high-temperature, high-pressure (HTHP rheology and filtration control, filtercake quality, and thermal stability of the drilling fluid under...

... when flooding with low polymers solutions indicates that brine did not manage to draw great part of the polymer retained xanthan xanthan solution flow in porous media upstream oil & gas rheology resistance factor chemical flooding methods mixture solution viscosity enhanced recovery...

... device where the sag performance of the fluid is investigated under 2 laminar flow conditions (where fluid rheology is the dominant effect), or in a flow loop where other parameters such as flow rate, eccentricity, pipe rotation and inclination are considered to be effective. As expected, sag performance...

... in this paper have been developed by using a new chrome-free, high-density HTHP water-based drilling fluid system that uses a combination of clay and synthetic polymer to provide excellent fluid-loss control and generate thermally stable rheology. This system shows exceptional fluidloss control and rheological...

... emulsion fluid is the emulsification package which works to stabilize the internal brine phase in the external oil phase, assists in maintaining oil wettability of all solids in the fluids, assists in maintaining a degree of filtration control, and assists in basic control over the system rheology...

... ABSTRACT: Barite sag in invert-emulsion drilling fluids (IEDF) is affected by many factors including fluid properties and operational parameters. Fluid rheology is perceived to be an important factor affecting sag and has received the most attention in laboratory-based investigations...

... zamora barite sag wellsite test boycott best practice drilling fluid property rheological property drilling fluid chemistry drilling fluid formulation directional well particle rheology drilling fluid selection and formulation stratification MECHANISMS, MEASUREMENT AND MITIGATION...

... well cement slurry slurry density bhct weighting agent cement property drilling fluids and materials upstream oil & gas batch mixer operation slurry rheology barite retarder wellbore 1 BEST PRACTICES AND LESSONS LEARNED FROM 15 YEARS OF EXPERIENCE OF CEMENTING HPHT WELLS IN ITALY F...

... nozzles (or total fluid area) are then sized so that circulating losses match the desired pump pressure. Recent work has demonstrated that the optimization process can be improved if mud rheology is considered as a product rather than an input. This paper presents a refinement of this work as a method...

... that can be used as an effective barrier in well abandonment. The selection was performed in three phases. · Placement properties like the thickening time, rheology, fluid loss compressive strength development were evaluated to optimise the slurry design. · The effect of expansion and mechanical...