Experimental Study on Downhole Oil-water Separation Hydrocyclone

Xu Yan,Li Sen,Yuan Lin,Zhang Jinglong,Ke Lin,Wang Zunce

doi:10.2174/1874834101508010257

Abstract

In the process of downhole oil-water separation, the traditional liquid-liquid separation hydrocyclone (LLSH) is used in conjunction with screw pumps, which makes the hydrocyclone rotating around its own axis. The rotation of wall of hydrocyclone affects its internal flow characteristics and separation properties directly. The orthogonal experiment of the downhole oil-water separation hydrocyclone (DOWSH) is designed to analyze the effect of flowrate, rotating speed and split ratio on separation efficiency and pressure drop, The primary and secondary factors of operation parameters have been studied, and the optimum condition and reasonable working range of DOWSH have been obtained. It provides reliable basis for process of practical application of DOWSH􀀁so as to guide the production.

Highlights

The technology of downhole oil-water hydrocyclone separation has a very positive significance in reducing the cost of the produced fluid lift, the ground water treatment, and the moisture content of produced fluid [1]
The flow in the downhole oil-water separation hydrocyclone (DOWSH) is rotating turbulence coupled with spiral flow and rotating wall, the internal flow pattern, separation efficiency and pressure characteristics are influenced by many factors, and the research work is complicated
The order of effecting on the separation efficiency is flowrate > split ratio > rotating speed, the optimal solution is for A4B5C5

Summary

INTRODUCTION

The technology of downhole oil-water hydrocyclone separation has a very positive significance in reducing the cost of the produced fluid lift, the ground water treatment, and the moisture content of produced fluid [1]. It has inestimable value for the extension of the exploitation of the old oil wells [2]. The flow in the downhole oil-water separation hydrocyclone (DOWSH) is rotating turbulence coupled with spiral flow and rotating wall, the internal flow pattern, separation efficiency and pressure characteristics are influenced by many factors, and the research work is complicated.

EXPERIMENTAL DEVICE

EXPERIMENTAL PROCESS

Parameters of Experiment

The Design of the Experiment

Analysis of Experimental Results

CONCLUSION