... pressure had been eliminated and there were no escaping hydrocarbons. upstream oil & gas north america government united states government biomineralization drillstem/well testing drillstem testing sequence injection sequence seneca reduction pressure casing and cementing enhanced...

... volumes, i.e. volume that each line in the system can hold. To evaluate dead volumes, pump 2 is operated at a constant pressure of 500 psi without opening any valves, while the rest of the system is kept at vacuum. Then a valve EV4 is opened (see Fig.1 ), connecting the pump to the system through a line...

... conditions. air emission separator upstream oil & gas climate change complex reservoir separation and treating modeling & simulation heater treater upstream production system pressure pipeline lp separator controller exchanger emission reduction production system typical...

... recovery. Furthermore, it is shown that proper management of pressure drawdown and the penalty for lower initial production rates in unconventional shale gas reservoirs can yield substantially higher ultimate recovery. The model is fully versatile and allows modeling and characterization of all profoundly...

... Abstract Gas condensate liquid dropout can occur in gas reservoirs, especially near the wellbore when the pressure falls below the dew point. In near-critical and highly volatile oils, extreme phase behavior effects can occur, especially near the critical temperature. Liquid dropout phenomena...

... at the early field appraisal stage. An important concern is the capture of suitable liquid samples. When the flowing bottom-hole pressure falls below the dew point pressure, for example, condensate will drop out near the well bore and the captured sample may not be representative of the formation fluid. We...

... Abstract This paper presents the results of a simulation study designed to evaluate the applicability of an Arps 1 decline curve methodology for assessing reserves in hydraulically-fractured wells completed in tight gas sands at high-pressure/high-temperature (HP/HT) reservoir conditions. We...

...Extrapolation of Solution GOR (R_s and r_s) What's the Problem? An existing black-oil PVT table may need to be extrapolated for a number of reasons: Saturated conditions may be encountered at pressures higher than the highest saturation pressure in a table – e.g...

.... This paper reviews the stimulation of two low-pressure oil producers and another oil producer, which was previously producing below potential. Standard practice indicates that a HF based system be flowed back or lifted with nitrogen to reduce the risk of additional formation damage due to factors including...

... Abstract This paper describes a new method for estimating average reservoir pressure from long pressure buildup data based on the classical Muskat plot. Current methods for estimating average reservoir pressure require a priori information about the reservoir and assume homogeneous reservoir...

... in composition and physical properties (especially saturation pressure), and some other reservoir/field data were used. Two fluid samples were chosen as the most representative samples, one for light samples and another for heavy samples. Also an optimum regression method was applied using a PVT package...

... Abstract In gas-condensate reservoirs, interpretation of static and dynamic skin is fraught with uncertainties when analysis is attempted with simple analytic tools. Problems compound when two-phase flow occurs owing to large drawdowns with flowing pressures dipping below the dewpoint pressure...

... be found for sampling and reservoir parameter estimation is the subject of regular debate. Alternatives are wireline formation tests in exploration and appraisal, and continuous recording with permanent pressure gauge in production wells. The quality of pressure and rate transients measured during...

... Abstract This paper introduces a new technology in which a logging while drilling (LWD) tool is used to pressure test a formation during the drilling process. The Formation Testing While Drilling (FTWD) or GeoTAP * tool described in this paper uses a testing technique similar to wireline...

... the run life of the artificial lift system through optimization of the reservoir pressure and artificial lift system performance. This paper demonstrates the long-term benefits of using subsurface permanent gauges to complement artificial lift equipment and provide real-time data to optimize well...

... size of 5 x 40 x 0.05 mm (width × length × thickness) was installed at the outlet of the sandpack to monitor the flowing-gas-bubble behavior versus pressure. Bubble behavior observed at the outlet corroborates CT measurements of in-situ gas saturation versus pressure. Importantly, these results help us...

... to reduce tubing pressure loss by up to 17 precent and lower the minimum gas velocity required to lift liquids up the tubing string. liquid loading pressure loss gas rate choke flow rate spe 84136 operational envelope production logging production control gas well unload liquid liquid...

... and inexpensive electronic control system. The new system may be connected to existing wellheads with minimal modification. One of the advantages of the new algorithm is the ability to automatically incorporate the changes in the line pressure. An example application is presented to indicate that the new...

... Abstract Quartz pressure transducers are plagued by degraded performance when subjected to thermal transients. In this paper, two new methods of calibrating quartz transducers in which a neural network is used to accomplish a dynamic calibration of a transducer pair for a range of temperatures...

... pressure declined from initial pressure, pore volume compaction would result in a large loss of original formation permeability during the middle to late producing life of the reservoir. Reservoir oil was highly undersaturated with 32° API gravity @ 60°F, initial viscosity of 0.7 cp, and a bubble point...