In order to realize the intelligent diagnosis of the electric pump and the motor working condition during the operation period of the electric pump well, an expert system based on fault tree and rete algorithm is realized. Through the analysis on the fault characteristics of the electric pump well, established the fault tree and knowledge base that support electric pump and motor working condit...

The purpose of this study was to describe the development a solar-powered submersible pump system without use batteries in agriculture. used solar drive run it. implementation uses combination trackers, water storage tanks, power converters, and stabilizers. results explained that trackers increased efficiency units track sun throughout day convert energy into DC electrical power.

Natural gas hydrate (NGH) is a kind of clean energy with great potential because its huge reserves. There are several effective methods for exploiting sediments such as depressurization, thermal excitation, inhibitor injection and displacement, etc. Among these methods, the combined depressurization heat method considered very promising method, which solves problem insufficient supply during pr...

A convolutional neural network support vector machine (CNN–SVM) method based on multichannel feature fusion is used for progressive fault diagnosis of offshore oil and gas wells. The excellent classification performance CNN attributed to its ability extract representations from large amounts easily distinguishable data. However, the capability severely constrained by noisy small sample amount e...

Submersible drainage sump pumps work in a highly corrosive environment, forming films with reaction products on the surface. Pump rotors are high-demand parts, so they made of quality materials good wear and corrosion resistance properties such as nodular graphite cast iron. This paper analyses behaviour iron used manufacture three types wastewaters, variable pH. Nodular samples were immersed w...

A teaching machine that simulates intravascular conditions found during a human therapeutic embolization has been constructed. A submersible pump drives fluid through a circuit of tubing. One limb of a Y (a vascular bifurcation) located in this circuit leads to a model arteriovenous malformation. Catheters placed in this limb may introduce embolic materials by various techniques, and those tech...

This study focuses on the effect of surface coating on the impellers and diffusers in improving the efficiency of mixed flow submersible borewell pumps. It consists of two parts. In the first part, a 3 stage pump was constructed with uncoated bronze impellers and cast iron diffusers having a surface roughness value of 2.5μm Ra and tested for pump performance. Then the same 3 stage pump was test...

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...