... ABSTRACT This paper discusses some problems on flow assurance of LH16-2 oil fields in the South China Sea. The main difficulty of flow assurance is about wax disposition and hydrate formation for the LH20-2 oil field. If these two problems are not solved, wax and hydrate may block the flow...

... and low-temperature conditions. Throughout 20 th century, methane hydrate was the target which should be removed from natural gas pipeline for flow assurance; in recent decades, however, it has been expected as an unconventional natural gas resource (Buffett, 2000; Sloan, 2003; Koh et al., 2011...

...) developed by EU funded HYACE/HYACINTH programs (Schultheiss et al., 2009), Pressure Temperature Core Sampler (PTCS) and hybrid PCS developed by Japan (Kawasaki et al., 2006; Kubo et al., 2014). upstream oil & gas geologist geology asia government china government drilling equipment flow...

...-field variations under different original reservoir pressure. fluid dynamics geology upstream oil & gas geologist asia government drillstem/well testing drillstem testing reservoir surveillance geological subdiscipline hydrate flow in porous media flow assurance depressurization...

...; Charlton et al., 2018). upstream oil & gas methane hydrate freezing salinity asia government pipe flexible hose inner tube methane gas gas hydrate japan government flow assurance experiment riser pipe experimental apparatus hydrate seawater evaluation model dynamic condition...

... al., 2018; Hou et al., 2018; Ji et al., 2019). In the absence of reliable experimental data and equipment for in situ measurements, numerical methods are more often used to study the permeability properties during hydrate generation and decomposition. permeability flow assurance growth habit...

... Through (Takahashi & Tsuji, 2005) and South China Sea (Ye, 2020), obtaining the flammable gas fixed in crystal cages and confirming the feasibility of hydrate extraction. flow assurance transition upstream oil & gas reservoir characterization sedimentary layer pore pressure wellbore...

... production logging flow assurance directional drilling production monitoring upstream oil & gas hydrate production control drillpipe heat capacity specific heat capacity flow rate temperature profile horizontal lenth drilling operation reservoir surveillance heat transfer...

.... upstream oil & gas reservoir characterization wave velocity porosity drilling operation experiment flow assurance geological disaster characteristic saturation natural gas hydrate hydrate monitoring technology different porosity methane gas acoustic characteristic polar drilling...

... strength provided by NGH and then lead to geological disasters and engineering damages, such as the destruction of seabed, wellhole and foundation (Lu et al., 2017; Hu et al., 2004). flow assurance strength reservoir characterization fluid dynamics pore pressure upstream oil & gas gas...

... Abstract The identification of hydrate risk region is the first task for deepwater gas field flow assurance. In order to accurately characterize the effect of liquid water on hydrate risk region, the dynamic hydraulics risk region was defined based on the transport characteristics...

... to establish a hydrate microscopic growth model. oilfield chemistry system pressure experiment production chemistry flow rate temperature control flow assurance hydrate experimental loop induction time hydrate hydrate formation water cut experimental loop upstream oil & gas initial...

... is to supplement the study of the effect of strain rate on shear results under plane strain conditions. reservoir geomechanics strength residual strength hydrate-bearing sediment sample flow assurance different shear rate plane strain shear test reservoir characterization shear band rate-dependent...

... oil & gas reliability engineering production test failure rate flow assurance wax inhibition asphaltene remediation remediation of hydrates secondary generation bayesian network scale remediation oilfield chemistry scale inhibition gas hydrate production operator prevention...

... still insufficient. mechanical property dynamic loading flow assurance thb upstream oil & gas shear strength dynamic load amplitude dynamic load sediment hydrate saturation specimen ghb reservoir characterization pore pressure wellbore integrity dynamic test dynamic mechanical...

... lateral growth gas phase bubble surface heat transfer hydrate film coefficient drag coefficient flow assurance frontier safe operation cycle hydrated bubble growth rate experimental data correlation deformation ratio methane bubble hydrate film thickness upstream oil & gas...

... jet channel, which provides limited removal effect is the most common in jetting Pig. Improvement in the structure with higher removal effect is in demand. flow assurance side nozzle removal effect flow field gas pipeline diameter jet angle turbulent kinetic energy midstream oil...

... in gas hydrate exploitation and an aggravated environment around oil field. methane gas decomposition methane hydrate dissociation mpa depressurization hydrate dissociation dissociation rate flow assurance concentration reactor engineering mpa 2 mass concentration inorganic salt...

... experiment hydrate decomposition experimental result flow assurance criterion strength criterion hydrate sediment mechanical property upstream oil & gas hydrate reservoir sediment hydrate saturation hydrate wellbore design saturation hydrate sample The Suitable Strength Criterion...

... was very low compared to that of fresh water. This result suggested that hydrate would reform quickly when the temperature and pressure conditions pass through equilibrium curve during methane hydrate production. flow assurance meg solution concentration meg concentration methane hydrate...