... methods were tested on simulated data which was generated by a multiphase flow simulator. The results showed that these methods are accurate in monitoring both flow rates and slugging characteristics (amplitude and frequency). Additional insights via PCA-based visualizations show that slugs could...

.... For the Mikkel/Midgard fields, which are tied back to the Åsgard B platform, the instabilities enforce minimum flow rates in the flowlines due to liquid handling of the surges topside. Åsgard B has also experienced hydrate problems related to no liquid MEG inhibitor arriving topside between each liquid surge...

... ABSTRACT The Gannet oil export pipeline is operating at relatively low flow rates. At these low flow rates, there is potential to have a flow regime with laminar flow instead of with turbulent flow. Therefore, the viscosity, or rather the rheological properties, of this oil are essential...

... injectable venturi injection pressure drop pipeline transient behavior reduction reservoir surveillance valve gas injection riser base pressure fluctuation flow rate experiment slug catcher artificial intelligence stability production logging bottom-hole pressure production control plain...

... Liquid loading is a well-known problem that occurs when wet gas wells approach their end-of-life. Due to the depletion of the reservoir, its pressure decreases. Consequently, the gas flow rate in the well is also reduced. When only dry gas is present in the well, the reduced gas flow rate has no further...

... amundsen experiment prediction flow rate diameter olga hd Velocity profiles in stratified two-phase flow: Comparison of measurements and model predictions P Andersson, J Henriksson Schlumberger, SNTC, Norway ABSTRACT One-dimensional models of multiphase flow in pipes are based on averages over...

... field. The field measurements consisted of pressure, temperature and mass flow rates, which were recorded during quasi steady state flow conditions and transient production scenarios, such as ramp-down, ramp-up, shut-in, restart, and pigging of a three-phase, large diameter pipeline system...

... accumulation. At low flow rates, liquid surge wave instabilities in the flowlines occur. In the present paper, it is shown that the tuned flow model capture these surge waves. The model predicts that the water surge comes from the riser, while the condensate surge comes from the flowline. Details...

... artificial lift system production control void fraction valve bhr group 18 pressure change mixture density injection pressure gas-liquid mixture enhanced recovery orifice size test well glv upstream oil & gas gas injection operation flow rate reservoir surveillance production monitoring...

... ABSTRACT Large liquid volumes build up in gas-condensate pipelines when operated at low flow rates, so limited time is available before production needs to be restored or halted to manage liquid surges on ramp-up or restart. Although gas-condensate systems are rarely operated below...

... on the readings of a multiphase orifice and the pressure drops of the gas-liquid mixture flowing in a vertical section of the pipe. Liquid and gas flow rates have been determined by means of semi-empirical equations developed for the specific set of flow parameters (geometry, flow rates, physical properties...

.... The preliminary plan for the field is to install 20–30 subsea wellheads, and metering of the flow from each well is required for reservoir drainage planning. In addition, flow rate metering is required in order to predict the flowing conditions inside the 100 km long flowline. For this purpose, metering accuracy...

... for produced water management. bhr group 18 separation system efficiency installation gravity separator separator coalescence application pipe separator separation efficiency water removal illustration separation separation and treating subsea system separator design flow rate upstream...

... ABSTRACT Field data are presented for two parallel risers connected to the same inlet. The data show that the multiphase flow is split equally over the two risers at high flow rates; however, below a critical flow rate the system diverges: the flow passes preferentially through one riser...

... is referred to as critical gas velocity . For gas flow rates below this critical gas velocity, the liquid phase starts to accumulate at the bottom of the upward inclined pipe, and partially or completely blocks the cross section of the pipe, forming intermittent flow. Based on the literature, the most...

... especially at zero bend angle and zero mass flow rate where the pressure drop should be equal to straight pipe and approaching zero velocity respectively. Ultimately B-type correlation given by Chisholm [5] was considered the most suitable correlation for two phase flows. flow pattern ls 0...

... done for a gas (air) flow rate of 60 N m 3 /hr and a liquid (water) flow rate of 2 m 3 /hr. In the simulations, the flow split was varied by increasing the pressure at one of the two outlets, leaving the other outlet pressure constant. The CFD simulations show that if the two outlet pressures are held...

... occur during production at low flow rates, typically during production ramp up [2] and sometimes also during ramp down [3]. When the production rate is increased the pipeline will move from a state with a large liquid content to a state with less liquid content. When this excess liquid is expelled out...

... and a glycerol-water mixture). The main objective in this project was to investigate the existence of multiple solutions in flows with low liquid loading. Specifically, maps were generated showing the critical flow rates for which the flow changes from the low-holdup solution to the high-holdup solution...

... Froude number equals unity, or the so-called accumulation point, where the liquid holdup starts to increase sharply with reducing gas flow rate. We developed an algorithm for computing the two points and performed a study to quantify the deviations between liquid flow rate and holdup at the critical...