... with steam from the early period of a SAGD operation. This is because most of the injected gas gathers at the upper part of the leading edge of the steam chamber and prevents the growth of steam chamber there, which results in a reduction of ultimate oil recovery. However, if the gas injection is initiated...

... argillaceous sediments are reduction of bulk volume e.g. compaction. Mechanical compaction is reduction in volume due to effective stresses, while chemical compaction involves mineral dissolution and precipitation and is a function of mineral stability and kinetics of precipitation and mainly controlled...

... mechanism - phase trapping or water blocking. productivity impairment gas reservoir reduction filtrate drilling fluids and materials methylglucoside mechanism drilling fluid formulation aqueous phase breaker shale microtox drilling fluid property matrix drilling fluid chemistry ndfx...

.... reduction compressors engines and turbines artificial lift system upstream oil & gas gas turbine pressure gas environmental problem burning temperature efficiency heat exchanger compression ratio low pressure gas collection system annular space productivity hydrocarbon gas equation oil...

... in a reduction in relative permeability to hydrocarbons; plugging with drill solids and mud products; and loading of the reservoir with drilling or completion fluids. In tight reservoirs, phase trapping and water-blocking are believed to be the primary causes of near-wellbore formation damage...

... & gas production optimization innovation producer efficiency engineering firm oil company reduction engineer information service company objective oil and gas cycle time drilling THE PETROLEUM SOCIETY PAPER 98-38 To Be or Not to Be- A Long Term Economic Decision T. it0 Z I Probes...

... aerobic conditions, all tests showed significant reduction in diesel range (C-C 30 ) TEH-contamination. The intrinsic control was least effective, but still showed 66% TEH reduction at 5 °C. The biostimulated soil performed the best, allowing 86% TEH reduction. The bioaugmented soil and surfactant treated...

... of objectives to be studied during the pilot test: the reduction of bottom hole equipment failures related to fluid pound; the reduction of lost production related to equipment failures with better surveillance; prove the applicability in low oil rate, high water cut wells in a mature water flood...

... Abstract Formation damage concerns in reservoirs with ultralow water saturations have been over dramatized; perhaps, because the mechanisms of permeability reduction as a result of extraneous fluid invasion are not well understood. It has been proposed that some gas reservoirs contain less...

.... Typically, sour gas has been extractedfrom acid gases through the use of Claus or other types of elemental sulphur reduction processes, the sulphur sold or stockpiled, and the residual carbon dioxide vented to atmosphere. With depressed prices for the commercial sale of sulphur and environmental concerns...

... face, is small. The consequence is a significantly reduced pressure loss around the fracture, compared to that around the wellbore in an unfractured well. Consequently, permeability reduction at the fracture face has a much lesser impact on reservoir fluid production than the permeability reduction...

... presented is a feasibility evaluation of this method in terms of volume reduction compared to the treatment at random. The comparison shows a significant (1.8 and 2.4-fold) increase in efficiency of volume reduction, E VR and up to 3.7-fold reduction of chemical usage resulting from optimal selection...

... Abstract Sand production is an instability considered to be the result of wellbore fluid pressure reduction (drawdown) below some critical level. The model presented provides a physical mechanism for yielding front propagation away from the wellbore as sand production continues. Mass balance...

... Abstract Most of Alberta's petroleum resources are heavy oil and bitumen. Further reduction in the cost of upgrading is the key to its development, as upgrading represents approximately 50% of the total cost of producing SCO from new oilsands projects. Upgrading can be achieved by different...

... water internal emulsion enhanced recovery situ formation continuous external phase upstream oil & gas emulsion flow in porous media emulsion formation bitumen droplet fluid dynamics oilfield chemistry production chemistry hirata reduction bitumen-water stable emulsion THE IN SITU...

.... Notethat only ±3dB represents a doubling/halving of sound level regardless of theabsolute decibel level. silencer plant fence gas plant environmental noise noise frequency gas processing reduction compressor pure tone sidac cooler fan retrofit low frequency bundle draft air cooler...

... to approximate the ionic concentration created by the addition of mineral nutrients in other treatments, facilitating the distinction between the effects of higher salt concentrations and the added nutrients. Sucrose was added as an easily available carbon source. quantity bitumen reduction...

... breaker concentrations. Thebreaker concentrations required to show significant reduction in thepermeability damage were found to be strongly dependent upon the polymerconcentration and the presence of crosslinker. An understanding or the effectsof polymer and breaker concentrations on the proppant-pack...

... Abstract A new drag reducing chemical additive has been experimentally tested to minimize skin friction in turbulent pipe flow of Iraqi crude oil. Large-scale pipes of 1" 2", 3" and 4" sizes have been used in the experiments. A friction reduction up to 63 percent has been achieved when 9 ppm...

... Abstract The productivity of many hydrocarbon-bearing formations appears to be reduced during water flooding operations. The reason for this reduction is mainly attributed to the permeability damage of the formation surrounding the bore hole. A possible cause of this damage...