..., as the peak rate of liquid exceeded the handling capacity. This motivated the development of a model predictive controller capable of choking back production before overfilling the topside liquid handling facility. © BHR Group 2009 Multiphase Production Technology 14 7 2 LIQUID SURGING For all gas-condensate...

... experimental result slug frequency bhr group 2009 multiphase production technology 14 controller simulation unstable operating point riser-pipeline system srsm open-loop unstable operating point oil production flowrate operating point frequency pipeline upstream oil & gas...

... data assimilation problems is to use Kalman filtering (Kalman [4 This © BHR Group 2009 Multiphase Production Technology 14 33 method, which was originally developed for linear models, has got several extensions (Jazwinski [5], Evensen [6]) to deal with non-linearity, which is present in many industrial...

... attractive for the oil and gas industry and have found their © BHR Group 2009 Multiphase Production Technology 14 51 applications in the business. Essentially, three main accuracy requirements exist, approximately amounting to: - 5-15% - for reservoir management; - 2-5% - for production allocation; - 0.25-1...

... a flow of coal dust solids in a nitrogen stream. Although these types of devices use pressure measuring structures, they are not able to address the © BHR Group 2009 Multiphase Production Technology 14 65 problem of measuring a liquid fraction in a multiphase-flow where the dispersed liquid phase is less...

... monitoring usg stratified flow bhr group 2009 stratified wavy flow inclination angle entrained fraction Void distribution in the liquid layer in stratified wavy flows measured with an X-ray Computed Tomography instrument B Hu, M Langsholt, S Nuland, C Lawrence Department of Process and Fluid Flow...

... application bornemann gmbh multiphase production technology 14 hydraulic jet pump germany shaft power twin-screw pump full size application bhr group 2009 pump capacity artificial lift system hydrocarbon Grown-up twin-screw multiphase pumps from marginal to full size applications D Müller-Link...

... and difficult to access © BHR Group 2009 Multiphase Production Technology 14 99 onshore oil fields (1). The pressure decreases in oil and gas fields by time because of its flow through the porous deposit rock within the conveying process and due to the declining amount of resource. As a consequence, less...

... towards discharge. Fig. 1: MPP used by the industry (1) © BHR Group 2009 Multiphase Production Technology 14 115 The moving compartments transport the multiphase fluids either from the outside of the screws to the middle or from the middle to the outside depending of the direction of the rotation...

... different continuous phase. © BHR Group 2009 Multiphase Production Technology 14 131 The changes in the spatial distribution of the phases as their volume fractions change can have significant impact on pressure drop and pose great challenges in its modelling. To predict pressure drop in dispersed oil-water...

... and the underlying mechanisms were discussed. Selected mechanistic models were evaluated against the experimental results. zhang bhr group 2009 reservoir surveillance liquid holdup droplet prediction water cut upstream oil & gas superficial gas velocity pressure gradient production logging low...

... of experimental data is typically 1 - 4 inches (0.0254 0.1016 m). © BHR Group 2009 Multiphase Production Technology 14 157 As was stated above, the conditions encountered in the pipeline systems are very different to those covered in the available range of experiments. Thus, reliance has to be placed on scale...

... is relatively low umix 1≤m/s. It is found that for higher mixture velocities the phase fraction has a more radial distribution that is not captured by the model. flow metering bhr group 2009 production monitoring sedimentation velocity liquid-liquid interface mixture velocity fluid dynamics...

... achieving a discrepancy between predictions and field measurements of 3–5°C. Today, 10 years of experience have been gained using this model, continuously improving its shortcomings. Currently, an accuracy of 2–3°C is achieved. bhr group 2009 reservoir surveillance steady state calculation sea bed...

... production technology 14 gas cap multiphase model simulation result drillstem/well testing spe upstream oil & gas operation purneftegaz production monitoring production control bhr group 2009 wellbore gas injection rosneft Application of transient multiphase models in onshore oil...

... gives better cleanup results than open-hole. cleanup bhr group 2009 completion mud viscosity cleanup result drilling fluids and materials drilling operation directional drilling reservoir fluid wellbore reservoir section horizontal wellbore simulation concentration upstream oil...

... testing flow pattern upstream oil & gas production monitoring bhr group 2009 production control drillstem testing pressure gradient transition annular flow imperial college flowrate void fraction steady state slug flow reservoir surveillance An experimental study of wellbore phase...

... mode pipeline upstream oil & gas production control model scope real-time mode simulator artificial lift system reservoir surveillance requirement gas lift look-ahead mode bhr group 2009 Practical experiences from development of on-line simulators for operational support K Havre, C...

... to downstream processing facilities such as poor separation. Furthermore, unstable flow causes a reduced production rate, hence, requires more time to achieve the same recovery. Therefore unstable production should be mitigated. © BHR Group 2009 Multiphase Production Technology 14 281 For gas-lifted wells...

... logging equation upstream oil & gas horizontal pipe pipeline gas-liquid flow correlation pipe prediction power law flow pattern production monitoring reservoir surveillance percentage error bhr group 2009 dimensionless parameter production control pressure drop New dimensionless...