The Research Of The Adaptability Of Thick Oil Collecting Technical Process

It is the"Three top periods"exploring stage at Liao He Oil field. The Production of raw oil decreased yearly, the moisture content in the raw oil increases continuously. The problem of oil ground transmission system comes about obviously. Some of the original stations, oil pipes, equipments are not matched with the practical production. The original oil transmission methods are now not adapted with the field requirement, so that the work efficiency is low, the power consumption is high, and it makes large waste. In practical production, the load unbalance restricts the development of production, and the original technology in the early stage is now not adapted with current technical requirement, because its technical content is low, consumption is high and efficiency is low. Based on the physical property and rheologic data of the thick oil, and applying the scientific system estimate methods, in terms of safety transmission and energy conservation, it gives the application limits of different collecting and transmission process (single pipe cold transmission, single pipe heat transmission, mix thin oil, mix active water and three pipes collecting and transmission) of thick oil of Liao He oil field. It also provides the technical support for"The research of Liao He thick oil collecting and transmission technical optimization". Firstly, it gives detailed analysis of the advantage and disadvantage of the practical production and current application of collecting oil process of Liao He oil field. Secondly, aim at solving the problem of the water pressure calculus of the oil gas transmission pipe, combining with the current field practical situation, it gives a calculus method of general raw oil gas mix transmission, and it also can apply to high adhesive raw oil and oil, gas, water, triple state flowing. At the same time, according to the property of mix transmission pipe, it gives the method to calculus the dissolvability, volume coefficient, compression coefficient, raw oil interfacial force of the mix transmission pipe. Based on the calculus method of the oil gas mixed transmission pipe technology, combining with the each property of technical process, it obtained the technical calculus method that is adapted to single pipe, double pipes, triple pipes process of the oil gas mixed transmission net. Relative density, viscosity, freezing point is the key parameters that effect the collecting technical process mainly in this study. Based on the study of thick oil collecting technical process in Liao He, it takes the technical calculus and theological research, and makes sure the safe transmission limits of collecting technical process of single pipe cold transmission, single pipe heat transmission, mix thin oil, mix active water and three pipes collecting and transmission. It offers the theoretical foundation of power conservation to Liao He oil field. Furthermore, it optimizes the topology of the pipe net distribution of the oil gas transmission system. It aims to make sure the stage number of the pipe net, the connection relationship between the pipe and station, the geometry position of the station, so that decrease the system's investment. It studied the estimate method of the consumption level of the collecting and transmission system. It mainly divided the raw oil collecting and transmission system to several subsystems, and analyze the power of the subsystem. It could choose black box model, cinder box model, and white box model to do the calculation. Finally, it compares the practical examples with different process consumption levels.