... was suffering of high level of water production inducing a severe decline in gas production. The preparation of the treatment consisted of lab coreflood tests aiming at checking the behavior of the selected polymer (P-321) in actual reservoir conditions. The product was shown to have good injectivity...

.... The recommended formulation was tested at two gas wells: one vertical and one horizontal in North Texas. The proposed formulation was used in the fracturing fluids when the wells were re-fractured. Production data from the two wells have shown a sustained increase in gas production and water recovery rate...

... drying the vicinity of wells by water-miscible organic solvent and N 2 injection. The post-injected inert gas also served to create deep penetration of the treating solution in the reservoir. The jobs were completed within 1–2 days, and after 2–3 weeks of shut-in period, the gas production was restarted...

... Abstract In the Mexico marine region, gas breakthrough is common in naturally fractured carbonate oil reservoirs. Increasing the gas production reduces crude oil production, and eventually the wells become uneconomic and are shut-in in spite of the remaining recoverable reserves. A typical...

... saturations at different settings to see the effect of injecting water during drilling and hydraulic fracturing. Two cases with open flow and fixed downhole pressure were discussed this paper. The results show an effect on gas production by delaying production by 21 years in the open flow situation. The gas...

..., and are produced with a bottom-up perforation strategy. The main objective is gas production from the deeper Main Zone layers. The shallower reservoirs prone to sand production were not targeted until recent years. With progressing depletion of deep reservoirs in the Main Zone and bottom up perforation strategy...

... in numerous core flood tests and field cases. The new basic equations for the detachment of fine particles, their migration and size exclusion, causing the rock permeability decline during gas production, have been derived. The analytical model, developed for the regime of steady state gas production...

... permeability flow rate horizontal section production rate fluid dynamics fracture wellbore cumulative production permeability ratio optimum number permeabilitis drainage area reservoir directional drilling length well optimization gas production graph permeability gas price different number...

... tight gas surface tension porosity drilling fluid formulation complex reservoir critical capillary pressure gas production mud fluid upstream oil & gas natural gas capillary pressure imbibition test drilling mud formation damage drilling fluids and materials shale gas drilling fluid...

... fracture conductivities. In this paper, reservoir simulation models for a generic gas shale reservoir are constructed to investigate the changes of water saturation distribution in fractures over time during the production and their impact on gas production performance. It is demonstrated that water...

... materials Upstream Oil & Gas fracturing fluid hydraulic fracturing carbon dioxide proppant cumulative production co 2 effective conductivity foam quality gas production Waltman field new viscoelastic surfactant hydrostatic pressure spe 111431 polymer system month cumulative production...

... to the formation damage, he concluded that formation damage alone matters only if damage is several inches deep and reduces the formation permeability by a factor of 1000 or more when using a single-phase model. The relative permeability damage alone will restrict gas production only when the injected fluid cannot...

... Veracruz basin dry gas production to 570 MMSCFD being an economic success for Pemex E & P, North Region, estimating benefit to cost ratio about 10. Once on production, vertical wells will be Fractured (Frac and Pack) to improve flow efficiency. Veracruz basin has experienced a continuous growth in its...

... and reduce formation exposure to potentially damaging polymer residue. DB gas reservoir is a low porosity, low permeability reservoir in the northwest of China. Large scale of hydraulic Fracturing has been carried out as effective method to get high gas production rates. However, the gas production rate...

... Abstract To maximize well productivity, it is essential to maximize fracture cleanup. A field study in the Codell formation of Colorado was conducted to examine the effects of guar removal from hydraulic fractures on gas production. The conventional method of quantifying cleanup from...

... permeabilities for the various bridging agents are presented in Figure 1 . Finally, an examination of the rheological properties of the various bridging agents was performed to verify they could be pumped through coiled tubing without excessive friction losses. Abstract To alleviate excess gas production...