... Figure 2 shows the stratigraphic position of the aquifer relative to the location of the conductor and surface casing. There was no sign of leakage outside of the surface casing, but the small leak outside the intermediate casing was troubling. The origin of the problem, however, was most...

... of reservoir fluid phase behavior and history match was done by utilizing detailed reservoir information. The performance of UGS with different scenarios of reservoir depletion, gas injection, and aquifer strength was analyzed. The injection capacity and deliverability of reservoir was set to 350 MMSCF/D (6...

... pressure and production information, are available. Both methods may have substantial uncertainty. In this paper, we present a methodology that uses a Bayesian approach to quantify the uncertainty of original gas in place ( G ), aquifer productivity index ( J ), and the volume of the aquifer ( W i...

... reserves evaluation material-balance plot horizontal line estimates of resource in place ogip upstream oil & gas ohip saturation pressure time step gas-condensate reservoir resource in place estimate aquifer model approach reservoir water influx aquifer model material-balance evaluation...

..., relatively thin columns underlain by large aquifers, and poor seismic imaging caused by shallow gas. To address these challenges a multidisciplinary reservoir description and stochastic modelling study was conducted to improve understanding of water behaviour - the key reservoir risk - and to plan optimum...

... to generate more realistic gas composition, thus optimizing the operations of the $1 billion Caroline facility. concentration aquifer mechanism production chemistry reservoir souring upstream oil & gas modeling & simulation field data corrosion inhibition reservoir simulation oilfield...

... gas in place (OGIP) if the reservoir produces under the influence of an encroaching aquifer. Although regression analyses have been presented 5 , 6 to obtain a more accurate aquifer description, a solution to the non-uniqueness problem still relies on a prior knowledge of the aquifer properties...

... in the Celtic Sea, Ireland. Ballycotton and Kinsale Head have a common aquifer. Kinsale Head Field was put on production in 1978 using two platforms Alpha and Bravo. From July 1991, Ballycotton produced gas as a subsea-completed satellite of the Kinsale Head Field, tied back to the Bravo platform at Kinsale...

... developed into a storage performance simulator with a number of applications of interest to the storage industry. Prognostic reservoir studies for detecting loss of storage gas due to migration or wellbore seepage, calculation of cumulative loss as a function of time, cycling of aquifers, and recoverability...

.... history gas injection long term prediction behbahani unique gas injection gas reservoir pvt measurement trans reservoir aquifer spe 35631 upstream oil & gas injection prediction efficiency case history enhanced recovery balance equation pressure maintenance reservoir simulation...

... ABSTRACT Accurate estimation of the initial gas in-place for high-pressure gas reservoirs is quite often difficult because of the effect of formation compressibility and the uncertain presence of water influx from small, associated aquifer or adjacent shales. This paper presents a material...

... aquifer spe 26140 upstream oil & gas composition flow rate drillstem/well testing reservoir pressure decline corrosion management geologist pvt measurement completion installation and operations oilfield chemistry production control fluid dynamics reservoir simulation flow in porous...

... with the material balance and water influx model for analyzing production data from water drive gas reservoirs. This automatic history matching technique has made it possible to accurately determine gas-in-place, aquifer radius and aquifer permeability. A forecast of the reservoir performance can then be made...

... for the well test). There were, however, several uncertainties with regard to the latter well test, such as partial completion and the very close proximity of the aquifer. The compaction data are illustrated in Figure 4 . Noteworthy is the hundred-fold, or more, reduction in permeability for low...

... government europe government sedimentology sedimentary geology reservoir simulation continental environment clastic rock rock type modeling & simulation netherlands government sandstone depositional environment tno institute correlation lower unit upper unit heterogeneity aquifer shale...

... ABSTRACT In an aquifer gas storage field, the gas/water boundary or transition zone expands and contracts cyclically due to the cyclic injection and withdrawal of gas in the field. The physical pore volume occupied by the gas phase thus changes with time. Although this change is cyclic...

... ABSTRACT A model is presented for optimizing the number and locations of wells for various hydrologie and reservoir conditions. It can handle confined or unconfined aquifers, leaky or non-leaky aquifers, isotropic or anisotropic permeabilities, existing wells at fixed or model-determined...

... which would help forecast future performance are discussed. effective compressibility history enhanced production reservoir condensate ne hitchcock condensate color saturation permeability aquifer aquifer volumetric porosity hitchcock upstream oil & gas recovery compressibility...

..., perforation program, and gravel packing are discussed. free gas pressure drop geopressured reservoir flow characteristic borehole diameter co-production aquifer flow in porous media completion gas saturation gas accumulation accumulation saturation permeability drillstem testing...

... are accessible and producible the absolute amount is still very large compared to all other conventional and unconventional gas resources. methane structural geology aquifer mechanism natural gas hydrate layer sediment reservoir characterization deposit gas hydrate clathrate bottom sediment...