... symposium piston young Introduction Much of the overburden formations found over permeable reservoirs in the North Sea are clay-rich shales [ 1 ]. These function as caprocks for underlying oil and gas reservoirs, due to their very low permeability, thus sealing the pore fluids from escaping...

... correction influence the hydrocarbon in-place and reserve calculations. The work can be extended to other multi-phase systems, such as oil-water, and water-gas, grouping with other capillary wall material to study the behavior of multi-phase flow in nanocapillaries. complex reservoir piston shale...

... was found to be effectively reduced by controlling both the particle size and the concentration of brine that was used to prepare swollen PPG. conformance improvement Fluid Dynamics core permeability particle size flow in porous media piston brine concentration rock permeability gel core...

... to system components and job design. drilling operation Screen Assembly inner string screen liner sand control piston screen joint assembly Screen Selection liner flow path application packer washpipe sandface completion valve vibration Upstream Oil & Gas completion shroud...

..., and advantages of the new slickline-retrievable static wellhead plugs as well as provide case history data. waterflooding horizontal tree valve spe 50591 subsea system mtm seal plug system plug body piston wellhead plug system hanger wellhead plug plug static slickline-retrievable wellhead...

... & gas society of petroleum engineers workover piston requirement closure completion installation and operations labyrinth seal safety valve design retrievable safety valve valve safety valve retrievable valve elastomeric seal reservoir surveillance production monitoring metal seal...

... Upper and lower external packing contained on valve only (no separate packing mandrel). Spring positioned above piston. No sealed ball swivel or threaded joints on equipment above valve. Pressure equalized spring chamber, inner mandrel, and outer housing on valve Same basic ball...

... equipment used in blow-out preventer control systems is being utilized to control hydraulic downhole safety valves, which are replacing the velocity-operated check valves previously used. Equipment such as high capacity gas driven and electric driven piston pumps, large float type accumulators and sliding...