... annular pressure drilling fuman oilfield operation displacement adjustment tarim fuman oilfield carbonate rock drilling fluids and materials formation efficiency technology cement slurry ordovician pressure well ultra-deep well overflow wang tarim basin Proceedings of the Thirty-fourth...

... and complex lithology composition, high pressure brine layer and weak layer coexist, resulting in frequent complications, such as stuck drilling, leakage, and overflow. Due to the influence of these geological features, the salt-paste cementing has long been faced with challenges such as narrow density window...

... hpht well detection threshold annular pressure drilling south china sea sensor artificial intelligence overflow well-log data hthp well parameter characterization monitoring accuracy big data overflow monitoring upstream oil & gas fusion method feature extraction method data...

... high tides and high waves larger than the design level. As a result, the following events were observed. When the water level is higher than the crest level of the seawall, not only wave overtopping but also water overflowing occurs. The overflowing rate is 20–50 times larger than the wave overtopping...

...-induced instability problems (tsunami-induced seepage flow and overflow) played a major role in the failure of the breakwater. Takahashi et al. (2014) evaluated the stability of caisson type breakwater under tsunami-induced seepage flow by carrying out tests based on the centrifuge technique and performed...

... ABSTRACT. In order to improve the stability of breakwater due to tsunami-induced overflow and seepage flow, it is effective that putting armor blocks on the harbor-side mound of breakwater. A hydraulic model experiment for the model of Kamaishi Bay breakwaters under tsunami condition...

... ABSTRACT After the 2011 off the Pacific coast of Tohoku Earthquake Tsunami, coastal dikes in Japan are required to be improved their tenacity. It is reported that scours of coastal dikes caused by tsunami overflow mainly occurred at the toe of the landward slope. In this study, fixed- bed...

... of coastal dikes is the scour at the ground behind them due to tsunami overflow. In the present study, we focused on geogrids as a scour countermeasure. In order to clarify the effect of the geogrids on the scour, flume experiments were conducted. Furthermore, numerical analyses were conducted to evaluate...

... Abstract The collapse mechanism of breakwater and countermeasures under the continuous tsunami overflow were investigated using a drum centrifuge. A 1/70-scaled model, representing a 10 m high prototype breakwater, was set in the waterway in the drum centrifuge to 1) reproduce the caisson...

..., and varying the incident wave's encounter angle. wave spectrum elevation water surface water surface elevation spectrum drilling equipment upstream oil & gas wave period drill ship frequency equation threshold significant wave height ship moon pool water surface overflow drift force...

..., it is important to consider the countermeasures for industrial facilities. An 1-D pipe network flow model, which is generally used for a surging analysis, was improved to evaluate the amount of overflow from pits of a channel network. It was found that the improved 1-D simulation model could reproduce the almost...

... Abstract This study describes a numerical simulation method for dyke breach process due to overflow based on Moving Particle Semi-implicit (MPS) method. The MPS method was developed for incompressible flow with free surface. In the MPS, fluids and geomaterials to be analyzed are represented...

... Horizontal density changes in the sea have the potential to drive extreme bottom currents. The focus in this paper is on sill overflows of Atlantic water from the Norwegian Trench into Fensfjorden in Western Norway. Fensfjorden is used for routing pipelines to the oil terminal at Mongstad...

... Failure Mechanism of an Embankment due to Overflow K. Fujisawa, A. Kobayashi, K. Yamamoto, S. Aoyama Graduate School of Agricultural Science, Kyoto University Kyoto, Japan ABSTRACT Experiments using small embankments were carried out to observe and understand the failure of an embankment due...

... on centrifugal separation in a vortex generated within the body. The inlet flow entering usually tangentially into the cyclone is divided into underflow which carries most of solids still suspended in the liquid and the overflow which contains most of the liquid and some fine solid. The application of the solid...