鲁克沁东区超深超稠油超临界蒸汽吞吐技术研究

发布时间：2018-12-28 09:57

【摘要】：在鲁克沁油田东区稠油多年探索开发技术的基础上,理论分析了蒸汽吞吐的机理,计算了注汽参数、井筒热损失及压降等关键指标。在地质认识基础上,结合鲁克沁东区储层特征及流体性质,对鲁克沁东区超临界蒸汽吞吐进行适应性评价。优化敏感参数,定量分析了周期注汽量、注汽速度、注汽压力及焖井时间对蒸汽吞吐效果的影响。优化超临界蒸汽吞吐注入工艺,定制了国内第一台35MPa超临界蒸汽锅炉,优选高压注汽井口及设备,优化管柱设计、环空隔热及套管保护措施。根据高温、稠油及出砂状况优选有杆泵举升工艺。在室内研究的基础上,先后在鲁克沁油田东区英4平1井、英501、英503H等井进行了现场试验,通过优化注汽锅炉、井口和管柱设计,制定详细的现场施工方案。实施过程中密切记录各项数据,定量分析回采水率、油汽比、注采比等效果评价指标。对矿场试验的实施效果、经济效果及氮气辅助蒸汽吞吐效果进行评价,论证了超临界蒸汽吞吐在鲁克沁东区稠油开采中提高采收率的可行性,为鲁克沁东区深层稠油的经济有效动用提供了依据。
[Abstract]:Based on the exploration and development technology of heavy oil in the eastern part of Lukeqin Oilfield for many years, the mechanism of steam huff and puff is theoretically analyzed, and the key indexes such as steam injection parameters, wellbore heat loss and pressure drop are calculated. On the basis of geological understanding, the adaptability of supercritical steam huff and puff in Lukeqin East region was evaluated in combination with reservoir characteristics and fluid properties of Lukeqin East region. The effects of cycle steam injection, steam injection velocity, steam injection pressure and braised well time on steam huff and puff effect were analyzed quantitatively by optimizing sensitive parameters. The supercritical steam injection process was optimized and the first 35MPa supercritical steam boiler was customized to select the high pressure steam injection well head and equipment, optimize the pipe string design, annulus heat insulation and casing protection measures. According to the high temperature, heavy oil and sand production, the rod pump lifting process is selected. On the basis of laboratory research, field tests have been carried out successively in well Ying4 Ping1, Ying501 and Ying503H in East part of Lukeqin Oilfield. Through optimizing steam injection boiler, wellhead and pipe string design, detailed on-site construction scheme has been worked out. In the process of implementation, all kinds of data are recorded closely and the water recovery rate, oil / steam ratio and injection-production ratio are quantitatively analyzed. The effect of field test, economic effect and nitrogen assisted steam huff and puff are evaluated. The feasibility of supercritical steam huff and puff in heavy oil recovery in Lukeqin East region is demonstrated. It provides a basis for the economic and effective use of deep heavy oil in Lukeqin East region.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44

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