... surveillance equation conductivity efficiency extraction efficiency application ramey conduction geothermal prospect wellhead taleghani wellbore geothermal reservoir geothermal gradient geothermal resource mass flow rate semi-analytical model thermal conductivity thermal energy output...

.../intelligent wells journal temperature conductivity microannulus severity ramey Introduction Heat transfer between formation and wellbore fluids occurs due to the temperature difference between the circulating fluid and surrounding rocks. An accurate prediction of wellbore and bottomhole...

... Abstract This paper presents a new concept of Pseudo-Aquifer Index and a major departure from classical methods to estimate transient water influx using Kumar-Ramey equation employing reservoir average pressure obtained from transient tests for a central well in a constant pressure reservoir...

... Intelligence Ramey flow rate short-term test Upstream Oil & Gas wellbore permeability interpretation reservoir estimation calculation Reservoir inflow slug test bottomhole pressure test duration equation Introduction Short-term tests are increasingly used to assess formation...

... analysis results. reservoir surveillance ramey welltest thermal conductivity enthalpy production control boundary condition heat capacity production monitoring coefficient temperature data flow rate elshahawi upstream oil & gas perforation drillstem/well testing gauge injection...

... surveillance reservoir characterization boundary petroleum engineer geology sagd production control variation geologist graph coefficient fori ambastha storativity frrst discontinuity ramey steam-assisted gravity drainage production monitoring thermal method equation alberta composite...

... reservoir surveillance production control whap model directional well ramey production monitoring Introduction Modeling of wellbore heat losses has many applications ranging from thermal recovery involving steam injection to water or gas injection into formations with drastically different...

... ABSTRACT Heat loss from the wellbore fluid depends on the temperature distribution in the formation. Formation temperature distribution around a well was modeled by Ramey (1962) by assuming a vanishingly small wellbore radius. The assumption, while robust for some cases, could lead...

... coefficient production monitoring petroleum engineer solution straight line laplace transformation permeability ramey reservoir surveillance pressure transient analysis spe 18156 procedure Introduction Solutions to the diffusivity equation are used to develop methods of interpretation...

... function wellbore storage reservoir surveillance production control pressure transient testing petroleum engineer spe 15476 reservoir characterization pressure transient analysis regime bourdet equation log-log graph aime production monitoring ramey united states government cinco-ley...

... fields worldwide. ramey wellbore society of petroleum engineers drillstem/well testing procedure skin factor drillstem testing investigation upstream oil & gas type-curve match diesel type curve application conventional buildup test slug testing valhall field storage coefficient...

.... production phase step function production time drillstem/well testing drillstem testing wellbore storage laplace transform flow rate pressure buildup ramey straight line unit step function boundary condition diffusivity equation upstream oil & gas type curve pressure transient testing...

... ratio drillstem/well testing buildup data normalized time time function wellbore storage permeability buildup test gas well gas well buildup analysis pressure transient testing fluid dynamics buildup ramey reservoir simulation spe 15580 horner analysis united states government...

... monitoring reservoir simulation petroleum engineer journal ramey radial INTRODUCTION One of the earliest types of reservoir models studied represents a cylindrical reservoir with one well in the center, either producing or injecting a single phase fluid. In the simplest form, this model provides...

... slug test drillstem/well testing production rate flow rate permeability shut-in pressure horner plot straight line expression reservoir surveillance ramey petroleum engineer production monitoring numerical integration build-up equation united states government selig production control...

... − p 2 ) All lines on Fig. 2 appear to converge at long times. These lines are reminiscent of pseudosteady-state lines for closed homogeneous systems (see Ramey and Cobb, 14 their Fig. 1 ). A surprising feature of Fig. 2 is that there does not appear to be a second semilog straight...

... united states government production control vapor saturation production node geologist reservoir surveillance New Mexico equation volcanology reservoir simulation reservoir characterization reservoir longevity production monitoring node company ramey saturation bandelier tuff boundary...

... in 1975 by Ramey et al. Three new slug test type-curves were developed for analysis of flow period data. This study was reviewed in the Earlougher monograph in 1977, and did include wellbore skin effects. The solutions mentioned thus far did not consider the momentum of the fluid in the wellbore. In deep...

... pressure gradients and negligible gravity effects in the reservoir. Upstream Oil & Gas Ramey pressure drop fractured well drillstem/well testing parallelepiped reservoir initial pressure boundary fracture wellbore pressure hydraulic fracturing dimensionless formation thickness...

... Testing two-layer reservoir skin effect Drawdown Behavior straight line drillstem/well testing Thickness wellbore storage two-layer system multi-layered system pseudo-steady state dimensionless time constant rate well permeability ratio layered system Upstream Oil & Gas Ramey pressure...