Factors Analysis Of Influencing About Heavy Oil Well Wellhead Manual Sampling Process

The oil well manual sampling is a simple but important work. The accuracy of the sample influent on the accurate about the well produced fluid Physical parameters. At the same time, Accurate and timely detection water content of crude can reflect the condition of well working and plays an important role on reduce management department energy consumption, Reduce the cost, and realize the automatic oil field management. Therefore,there have a high requirement to manual sampling. At present, domestic manual sampling process have a lot of deficiencies, such as Sampling valve Is common hand wheel gate valve, is easy occur jam and Frozen in winter, and there haven’t Special switch, everyone can open it, No anti-theft function. If there have some unreasonable about sampling probe Installation position and the sampling pipe diameter, will cause the sample is not accurate.If the temperature high enough cause the light component in heavy oil and Water vapor will volatile. If the temperature is too low when sampling the wax and asphaltene in heavy oil will precipitation. The Water content will be affected. The sampling valve opening degree is unreasonable. For example, the valve open too small will lead Oil-water separation, the valve open too large will lead fluid splash. Liaohe oilfield has invented a kind of sampling valve. It can solve the problems of froze, pollution and stolen. The paper is on the base of the sample which invented by Liaohe. To simulate Sampling probe different installation positions, different installation depths, sampling angles, sampling tube diameter, the degree of opening of the sampling valve, sampling angle, Inlet velocity, the inlet moisture content.FLUENT software was used to numerical simulation, Sample moisture content compare with real situation, and analyze the different factors on the heavy oil well head the effect of manual sampling, this is the manual sampler in sampling process, this paper analyzes the factors which affect the authenticity of sampling several, find out to reduce the sampling error, make more reasonable sampling method, as to provide theoretical basis for manual sampling.