【每日一词】【5.9-5.10】之bubble flow——摘自斯伦贝谢网站的Oilfield Glossary [复制链接]

A multiphase fluid flow regime characterized by the gas phase being distributed as bubbles through the liquid phase. In a producing wellbore where the bubbles are uniformly distributed, there is little relative motion between the phases. Where the bubbles congregate and combine to form a less uniform distribution of the gas phase, some slippage will occur between the phases with the gas tending to cut through the liquid phase.

                                                                                                    churn flow 涡流
1.  n.  [Well Completions]    ID: 2596

2.  n.  [Production Logging]    ID: 10980

A multiphase flow regime in near-vertical pipes in which large, irregular slugs of gas move up the center of the pipe, usually carrying droplets of oil or water with them. Most of the remaining oil or water flows up along the pipe walls. Unlike slug flow, neither phase is continuous. The gas slugs are relatively unstable, and take on large, elongated shapes. Churn flow occurs at relatively high gas velocity and is similar to froth flow. As the gas velocity increases, it changes into annular flow.

slug flow段塞流

1.  n.  [Well Completions] ID: 2826
A multiphase-fluid flow regime characterized by a series of liquid plugs (slugs) separated by a relatively large gas pockets. In vertical flow, the bubble is an axially symmetrical bullet shape that occupies almost the entire cross-sectional area of the tubing. The resulting flow alternates between high-liquid and high-gas composition.
See: multiphase fluid flow
2.  n.  [Production Logging] ID: 11050
A multiphase-flow regime in pipes in which most of the lighter fluid is contained in large bubbles dispersed within, and pushing along, the heavier fluid. The word slug normally refers to the heavier, slower moving fluid, but sometimes to the bubbles of lighter fluid. There are also small bubbles within the liquid, but many of these have coalesced to form the large bubbles until they span much of the pipe. In gas-liquid mixtures, slug flow is similar to plug flow, but the bubbles are generally larger and move faster. As flow rates increase, slug flow becomes churn flow.
See: bubble flow, churn flow, flow structure, froth flow, multiphase flow, plug flow
Slug flow

3.  n.  [Production Testing] ID: 11389
A type of flow in which surface equipment may be damaged by the sudden impact of a liquid slug in a phenomenon called water hammer.