旋流分离钻井液油相的实验研究

为了保证欠平衡钻井的安全高效,需要维护钻井液性能,分离由地层进入钻井液中的原油.在分析现有技术的基础上,提出将水力旋流技术应用于欠平衡钻井过程中原油和钻井液的分离.实验探索分析了操作参数和物性参数对旋流分离效果的影响.研究结果表明,操作参数和钻井液物性显著影响旋转分离效果.随着钻井液流量、分流比的增大,旋流分离效率和系统压耗同时增大,但是随着密度差和含有浓度的增大、粘度的减小、旋流分离效率增大的同时,系统压耗则呈现减小趋势.研究结果对实际装置的研制和相关工艺技术的开发提供了理论依据.

Experimental Study on Oil Separating from Drilling Fluid by Hydrocyclone

It is needed to maintain drilling fluid and separate crude oil from drilling fluid,which permeate in bore hole from formation,to ensure the safety and high efficiency of underbalanced drilling. On the basis of analyzing the existing technology,the hydrocyclone technology is proposed to use in the separation of crude oil and drilling fluids of underbalanced drilling process. Affection of operating parameters and physical property parameters for efficiency is analyzed by experiment. The results showed that the impact of operating parameters and physical property parameters for efficiency is greatly. The higher flow and split ratio the higher separation efficiency and pressure loss of system. The larger difference between the two liquids,higher content and lower density,the higher separation efficiency and lower pressure loss. The results of study provides a theoretical basis for the structural design of the equipment and related technology.