Application Research Of Cementing Technologing About Multiple Pressure Layer System

With oilfiled exploration and development entering into the middle-last time, formation pressure has changed greatly, which cause to situation of one hole having multiple pressure system to become more and more general. Therefore, it brings more and more difficulties to guaranteen and improve cementing quality. In order to solve the problems of cementing technologing of multiple pressure layer system, Heavy crude is a kind of oil of which viscosity and density is high. It has some features such as high content of colloid and asphalt, heavy density, low freezing point and so on. In the process of heavy crude gathering and transferring, the heating and driving consumptions are far higher than that of thin oil, because the upper transport temperature is demanded and the resistance loss of gridiron in the process is so large simultaneously. Thus the energy consumption analysis and appraisal of heavy crude gathering and transferring system is very important to reduce the system energy consumption effectively. Firstly the property of heavy crude, the main technique of exploitation and the technological process of the component parts of the heavy crude gathering and transferring system such as the wellhead manifold, the metering station, the transfer station and the central treating station are introduced. Then the fundamental conception of energy system and the thermodynamics analysis method are explained.we have developed a series of research which according to different blocks and pressure. The paper introduces our study and application achievement about the aspects.