... A = V L p P L + p , where V A denotes the amount of the adsorbed gas content at pressure p , V L is the maximum adsorption capacity at the given temperature, and P L represents the Langmuir pressure at which the amount of adsorbed gas content is 0.5 V L . The Langmuir...

... apparatus. The new technology for Geobaric Thermal Volume Analysis (GTVA) exploits the gas-reducing effect of increased relative pressure (i.e. increased over-balance) to (1) quantify pressure, (2) quantify formation gas content, and/or (3) predict mud cut in gasbearing formations. drilling fluid...

... ranging from 5 to 1,000 nm ( Fig. 1 ), these pore spaces can adsorb methane (molecule size of 0.38 nm) and store free methane at the same time. Reed and others (2007) estimated that porosity in organic matter ranges from 0 to 25%. Abstract Favorable gas content, depth, and thickness, along...

... jet apparatus. But all these technologies have not gone forward because of their imperfections. miscible method Upstream Oil & Gas viscosity recovery compressors engines and turbines displacement experiment gas injection method booster pump Water gas Influence gas content...

... (micropore), and, secondary (macropore, and, natural fracture) porosity systems. The primary porosity consists of very small pores with very low permeability, whereas, the secondary porosity system consists of natural fracture systems, and, cleats. Coal beds have large internal surface area, and, gas content...

... appropriate drilling patterns for coalbed methane reservoirs of different thickness and with different characteristics. The reservoir characteristics that have been studied include gas content, permeability, and desorption characteristics. The yard-stick for comparing different drilling configurations...

... with multi-well pilot projects. The coals of interest vary from 300 to 2,300 feet in depth, have moderate to high ash content, low moisture content, and are High Volatile C to Medium Volatile in rank. The coal seams range in thickness from one to five feet and have gas contents of 1 to 325 scf/ton...

... coalbed methane plays with gas content an order of magnitude lower, and reservoir permeability values several orders of magnitude higher than other producing coal bed plays. This paper documents the results of an ongoing evaluation of the reservoir and production characteristics of the Wyodak coals...

... coalbed methane development areas. the estimated gas content, V was 305 scf/ton and it agreed with the measured gas content value of 302 scf/ton. Thus, the measured value fe ll directly on top of the isotherm indicating 100% saturation. This is in agreement with the actual data. This finding...

... which will mimic the gas content isotherm one would normally use to describe a coalbed methane system. In essence, the dissolved gas in the oil replaces the Langmuir isotherm function. This is done via: modeling & simulation coalbed methane model engineer methane gas content reservoir...

... database coalbed methane permeability energy navigator recovery upstream oil & gas drillstem testing production control gas content peak gas rate reservoir property drillstem/well testing coal seam gas complex reservoir reservoir pressure natural fracture system fluid dynamics drainage...

... obtained using conventional dual-porosity simulators. With the introduction of an appropriate storage volume of free gas in the macropores, the predicted increase in gas production rates are consistent with the published field data. micropore simulator macropore gas content flow in porous media...

... and because it describes an approach that can be used to characterize shale reservoirs. fracture system porosity isotherm bulk density gas content hydraulic fracturing upstream oil & gas complex reservoir fracture permeability production data gas porosity toc antrim shale shale...

... reservoir model upstream oil & gas completion hydraulic fracturing coalbed methane gas content reservoir coal seam gas coal bed methane basin geologist drillstem/well testing production enhancement fluid dynamics coal mining reservoir simulation flow in porous media well intervention...

... forecast forecast drillstem/well testing permeability upstream oil & gas reservoir property complex reservoir hydraulic fracturing gas content history match shale gas production data forecasting gas porosity reservoir description fracture fracture half-length porosity clastic rock...

... variation complex reservoir well production flow in porous media fluid dynamics scenario gas content production forecast key reservoir property adsorbed gas content modeling & simulation well production forecast initial reservoir pressure forecast production rate coalbed methane...

... pressure initial gas content modeling & simulation coal seam gas production monitoring upstream oil & gas recovery reservoir surveillance coalbed methane gas content production control saturation permeability initial reservoir pressure water production desorption pressure porosity...

... in gas content estimates, as indicated in tests with a limited number of isotherms. The new correlation, adjusted for the effect of moisture, could be used with well logs alone in estimating gas content (saturated conditions) in coalbeds where no core samples are available. Since the equation provides...

... oil & gas permeability china basin test area coalbed methane tangshan gas content methane drilling coal seam reservoir evaluation reservoir parameter evaluation thickness tangshan area test well reservoir characterization spe 24904 subsidence corehole Introduction China...

... we present a methodology that integrates the existing technology with new measurements and techniques. Such a procedure can allow one to evaluate the coal formation specifically for identification, resource definition (thickness), gas content (reserves), recoverable reserves (permeability, porosity...