... Abstract In this paper it is described the approach of constructing the design of acid treatment and the tools of the software designed to solve this problem. The developed simulator includes a hierarchy of calculation modules that differ in the degree of detail of the physical effects...

... to the buildup of retrograde condensate are studied. The effectiveness of previously performed acid treatments and solvent injection has been considered in order to increase the productivity of such wells. The analysis of the ambiguity and variable success of such events is carried out. An unconventional...

..., the main object in operation is the D 3 -III formation. The paper considers the complex process of designing acid treatment (AT), which includes physical and chemical studies of acid compositions (AC), formation fluids and object rocks, physical modeling of acid effects on the studied core samples...

... well performance directional well inflow tracer inflow distribution acid treatment inflow performance technology implementation Formation Fluid monitoring polymer matrix Resman Kharyaga Oilfield multi-zonal well Upstream Oil & Gas tracer system tracer interpretation society...

... and the flow of the acid system is diverted to new untreated zones. Absence of polymers is one of the unique features of VDA. Universal solvent At the first stages of the matrix acidizing treatment, where VDA system was applied, before its injection a 10% solution of universal solvent was used to remove...

... Oil & Gas extraction kerosene gas permeability reservoir Fluid Dynamics acid treatment horizontal direction permeability increase filtration flow in porous media acid reagent filtration rate reduction vertical direction permeability variation acid composition effective stress...

... with proppant in the carbonate reservoir, followed by acid treatment with excess fracture pressure This approach allowed us to select a technology, in efficiency and duration, exceeding all previously approved stimulation methods. Figure 5 presents a comparison of the effectiveness of investments...

.... To stimulate the inflow into the wells, it is necessary to conduct acid treatments. Two unique works were carried out in Russia with the use of a multilateral reentry system for detection and selective access into different boreholes. This system made it possible to orient and successfully enter...

... permeability reservoirs of Belarusssian oilfields, flow simulation technologies naturally develop in the following directions: – improvement of conducting acid treatment methods; – adaptation of various technologies for hydraulic fracturing. As it is known, the most common and effective...

... for new promising methods for increasing oil recovery. Carbonate reservoirs stimulation in the Samara region is carried out using a spectrum of various technologies of hydrochloric acid treatments, both to extend the life of old wells and to efficiently start new wells after drilling. In order...

... that include formation hydrochloric acid treatment and hydrofracturing. This paper will review the specifics of well stimulation approach on East Siberia carbonate reservoirs. Abstract East Siberia oil-and-gas province, which has not been fully developed until now, is Russia's primary reserve...

..., to be able to filtrate the fluids through the set of three samples. After that there was a filtration of acid conducted in the "well to reservoir" direction. The filtration had to be as uniform as possible at a constant pressure, but at the same time maintaining the conditions of the actual acid treatment...

... using a sector model has shown a 5% increase of cumulative oil production against a 10% decrease of cumulative water production. Implemented in the existing offshore Arctic field, premium port technology has enabled selective acid treatment in individual reservoir zones, making it possible to reduce...

... rate flow efficiency Efficiency Flow Parameter horizontal well drilling operation criteria acid treatment selection criteria pressure surge society of petroleum engineers wellbore Introduction Formation drilling is one of the most critical stages in a well construction process...

... to the reservoir (as a result of the acid treatment, alkali treatment, hydraulic fracturing, killing operations on production and injection wells, evaluation of the depth of penetration of drilling mud filtrate into the formation, precipitation of resins, asphaltenes and paraffin in the bottomhole formation zone...

... on one well up to 36 hours and on other two wells – up to 24 and 48 hours, respectively, where acid treatments were considered unnecessary. For the first time, dynamic well testing were completed on the Russian Arctic shelf in four carbonate reservoirs without any fluid recovery on surface, under...

... integrated acid treatment engineering and design to include physical and chemical analysis of acid compositions, formation fluids and reservoir rock; physical simulation of acidizing on core from target intervals and numerical modeling of the optimum acid job design. The conducted research supported...

... some amount of swellable illite/smectite mixed-layer clay. Low salinity and fresh water fluids can disperse kaolinite and swell smectite. As such, the acid treatment design must prevent clay swelling and clay dispersion. The permeability of the formation was in the range of 100 to 300 md, though some...

... of treatment. The created model was applied to numerical calculations for real cases. Field and calculated data are in good agreement. concentration penetration zone hydraulic fracturing reservoir characterization hydrochloric acid acid treatment structural geology acidizing injection rate...

... is used in acidizing and acid fracs. Acid treatment is inefficient in thick reservoirs, thus the treatment design becomes quite complex to achieve efficient acid placement. The acid frac efficiency in carbonate reservoirs is controlled by matrix to fracture porosity ratio, whereas acid fracs in fractured...