... of the critical tasks during the oil rim development is to control production wells to prevent water breakthroughs and gas outs. Key factors are control over drawdown and on-time choke restriction of the well in case of a gas out and an extreme gas factor increase. reservoir surveillance reservoir...

... an opportunity to optimize the cleanup process by cleaning every zone separately. Meanwhile, it became possible to understand the extent to which every zone is cleaned and in real-time optimize the process by increasing the drawdown in the undercleaned zones. New methodology to speed up cleanup process, test...

... the gas-gathering system option. artificial lift system drawdown flow rate premium filter reservoir thin low-pressure gas deposit gas well deliquification efficiency criterion promising method operation deposit upstream oil & gas separator hydrodynamic model application...

... associated with the ability to create enough pressure drawdown, high risks associated with the inability of the well to flow to surface to unload the liquids from the wellbore, and clean-up of the well to unlock true reservoir potential. Therefore, for the last several decades, the oil industry has been...

... control equipment drawdown diameter nozzle 4 heterogeneity assembly wellbore application reservoir configuration completion design operation valve screen isolation valve choke sleeve Introduction: Filanovskogo Field Review The Filanovskogo oil and gas condensate field, named after...

... Field log analysis Kazakhstan drilling operation depletion case study formation pressure horizontal well fpwd technology well logging Upstream Oil & Gas Karachaganak Petroleum application operational risk reservoir real time system Directional Drilling drawdown formation testing...

... a 0.5-0.6 m perfo interval is suggested. During WFT operation the tool is run into the hole and the packer is set across the previously perforated interval. An initial drawdown and build-up is done to estimate layer mobility and then an extended flow is performed to clean up the fluid of filtrate...

... elements Figure 3.9 GOR behavior in time for horizontal wells in gas cap zones Figure 3.9 Wells grouping according to GOR behavior Figure 3.10 Synthetic simulation model Figure 3.11 Cumulative oil production and average drawdown values for optimal operating regimes...

... of more than 400 tons of oil per day. GOR and water cut showed a better dynamic when compared to offset wells in the field, where gas and water breakthrough was observed. One of the main reasons for this was the ability to control drawdown in each of the laterals by using multiposition valves installed...

... amplitude interpretation Drillstem Testing pressure data drawdown trend derivative curve fracture fractured reservoir reservoir test result pressure drawdown production period drawdown interference test conductivity wave effect schematic illustration pressure buildup Introduction...

... wellbore integrity strength acid treatment wormhole Reservoir Characterization Upstream Oil & Gas calculation mechanical property Wellbore Design filtration modeling bashkirian horizon initial formation pressure Scenario reservoir geomechanics drawdown porosity plug...

... production monitoring Drillstem Testing productivity index drawdown liquid rate completion pseudo steady state productivity index Reservoir Surveillance Upstream Oil & Gas reservoir pressure well 13 intelligent well offshore gauge Choke Position gauge data real-time production optimization...

... several times superior performance of vertical wells. And the increase in horizontal wells is provided not by increasing the drawdown, and by increasing the filter surface. Productivity is limited in the vertical wells of the reservoir reveals the thickness, whereas the thickness of a predetermined value...

... production logging drawdown interpretation production control drillstem/well testing temperature change drillstem testing production monitoring field data pay zone upstream oil & gas numerical model temperature field heat transfer equation analytical model coefficient...

... and activity, well distance and patterns, position of perforation intervals, pressure drawdown, maximum allowed watercut. Those factors could be divided into two global groups – geological and technological. Ultimate fraction of mobile oil displaced (volume sweep efficiency) depends on many factors...

...Conclusions This logic allows the reservoir engineers to recommend the optimal well performance conditions that will ensure maximum practicable drawdowns. To achieve this it is necessary to firstly, select wells with prevailing matrix porosity; secondly, conduct hydrodynamic surveys...

..., separator fill, etc.), particularly for systems that have some tolerance towards sand production. In order to predict whether sand production will be ‘problematic’, it is important to estimate sand volumes / rates as a function of bottom-hole load conditions, drawdown, time, etc. This paper presents...

... test data. Tests in condensate reservoirs, however, tend to be difficult to interpret. Build-up and/or drawdown data are usually dominated by wellbore phase redistribution effects and the main analysis challenge is to distinguish between reservoir effects, boundary effects, fluid behavior and wellbore...