As a submersible permanent magnet synchronous motor (SPMSM) must function in downhole high temperature crude oil for long periods of time, the accurate prediction its rise is crucial to improve stability motor. However, analysis field involves multiple physical fields, such as electric field, magnetic fluid and so on, it difficult calculate accurately. Motor loss usually loaded fixed value when...

Increasing instrumentation of the modern digital oilfield produces streams of data from sensors that monitor the functioning of different components in the field. This data should be converted to actionable information rapidly in order to respond to events as they happen or are predicted. The challenge is therefore to develop technologies that can process these large sensor datasets rapidly and...

Abstract The article presents the most common varieties of low-volume rotary disc mixers. features their design are described, main advantages and disadvantages identified. A description a new submersible rotor-disk mixer is given. It shown that this type can be used to create high-quality emulsions maintain them. installed in overall tanks reactor.

Heart rate during overnight rest and while diving were recorded from five emperor penguins with a microprocessor-controlled submersible recorder. Heart rate, cardiac output and stroke volume were also measured in two resting emperor penguins using standard electrocardiography and thermodilution measurements. Swim velocities from eight birds were obtained with the submersible recorder. The resti...

A set of simplified boundary conditions for a flexible beam connected to a rigid body at one end and free at the other end is presented and applied to the case of a fluidconveying, fluid-immersed pipe. These boundary conditions represent an analytically tractable approximation to those of a submersible which uses a combination of jet action and flutter instability induced tail motion to produce...

<p>Electrical submersible pumps (ESPs) are multistage centrifugal driven by specially designed three-phase induction motors. They used in many applications such as nuclear and petroleum industries. In the presented paper, we study speed control of an ESP pump using a rule-based fuzzy logic controller (FLC). As case study, oil well is considered to analyze effects changing on both motor pa...

A novel system was developed for the culture of juvenile freshwater mussels (Unionidae). The system can be replicated economically to provide statistical power for experimental investigations of culture conditions. Two nested buckets partition a water volume of 18 l into upper and lower compartments. Water moves from the lower to the upper compartment via a small submersible pump, and returns t...