杜66块火驱开发技术及调控对策研究
发布时间：2018-08-30 18:41
【摘要】：在全球经济发展的大环境下,对石油的需求量迅速增加,在大规模对常规油气资源开采了很长时间后,人们开始对稠油资源产生了浓厚兴趣,因为其有着雄厚的储量,所以开发稠油油藏的技术也开始得到重视和关注。辽宁省盘锦市辽河石油勘探局曙光采油厂的杜66块火驱井组开发区域属于稠油老区,目前已进入吞吐开发后期,存在生产周期高,地层压力低,动用程度高,低产低能停产井多等问题,本区块的平均吞吐周期是11.72,地层的平均压力是1.29MPa,只占原始地层压力10.8MPa的11.9%,地质储量按照平均单位压降采出只有2.49%。按照原开发方式采收率仅能达到27.2%。经过对国内和国外的一些稠油开发方式、转换的技术方面调查研究,以及综合了对油藏适应性评价的基础上,得出结论,杜66块地质油藏在后期开发上应该选择火驱开发方式。本文着重介绍了辽河油田曙光采油厂杜66块火驱开发开展情况,通过对杜66块油藏类型和地质特征、开发现状和矛盾,以及火驱开发技术的深入研究,摸索出了动态调控规律,合理优化了配套措施,制定了相应的调控对策:通过组合式吞吐引流模式、注采参数调整、反向火驱技术等平面火线控制技术,分层采油测气管柱、生产井化学调堵、注气井分注等纵向动用控制技术,以及优化尾气处理工艺、作业堵漏、优化管柱设计等高尾气治理手段,大大提高杜66块稠油油藏的开发效果,并对研究结果进行应用。最终通过研究证明,增产效果明显。井组产量持续增长,连续生产井日产油由转驱前112.3吨上升到451.7吨,增加339.4吨;单井日产明显上升,区块单井日产由0.9t/d提高到2.2t/d;开井率大幅提高,试验区17井组油井见效比例达到82%,24井组为72%;50井组为66%;开发指标明显改善,火驱后,先导试验井组采油速度由0.29%上升至2.2%,扩大试验区由0.23%上升至0.82%,预计最终采收率可达到52.2%,高于标定采收率27.2%,提高采收率达25%。
[Abstract]:In the global economic development environment, the demand for oil is increasing rapidly. After a long period of large-scale exploitation of conventional oil and gas resources, people began to have a strong interest in heavy oil resources, because they have strong reserves. Therefore, the development of heavy oil reservoir technology also began to receive attention and attention. The development area of block du 66 fire drive well group in Shuguang Oil production Plant of Liaohe Petroleum Exploration Bureau of Panjin City, Liaoning Province, belongs to the old heavy oil area. It has entered the late stage of huff and puff development, with high production cycle, low formation pressure and high production degree. The average stimulation period of this block is 11.72, the average formation pressure is 1.29 MPA, which only accounts for 11.9% of the original formation pressure (10.8MPa), and the geological reserves are only 2.49% according to the average unit pressure drop. According to the original development mode, the oil recovery can only reach 27.2g. Based on the investigation and study of some heavy oil development methods, conversion technology and reservoir adaptability evaluation at home and abroad, it is concluded that the fire drive development mode should be chosen in the later development of block du 66 geological reservoir. This paper mainly introduces the development of fire drive in block du 66 of Shuguang Oil production Plant in Liaohe Oilfield. Through the deep study of reservoir type and geological characteristics of block du 66, the present situation and contradiction of development, and the development technology of fire drive, the dynamic regulation and control law is found out. The matching measures are optimized reasonably, and the corresponding control countermeasures are worked out, such as the combined huff and puff drainage mode, the adjustment of injection and production parameters, the reverse fire drive technology and other plane fire line control techniques, the stratified oil production pipe string, the chemical plugging of production wells, etc. The development effect of heavy oil reservoir in block du 66 is greatly improved by means of longitudinal production control technology, optimization of tail gas treatment technology, operation plugging, optimization of pipe string design, and application of the research results. Finally, it is proved by the research that the effect of increasing production is obvious. The daily oil production of the continuous production wells increased from 112.3 tons to 451.7 tons, which increased by 339.4 tons, the daily production per well increased obviously, the daily production per well in the block increased from 0.9t/d to 2.2 t / d, and the opening rate increased significantly. In the test area, the ratio of effective oil wells in the 17 well groups reached 82jianzhuan24 well group, 72jiao 50 well group was 66.The development index was obviously improved, and after fire flooding, The oil recovery rate of pilot test well group is increased from 0.29% to 2.2%, and the test area is expanded from 0.23% to 0.822%. It is estimated that the final recovery factor can reach 52.2%, which is higher than the calibrated recovery factor 27.2and the oil recovery rate is increased to 25.2%.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44
[Abstract]:In the global economic development environment, the demand for oil is increasing rapidly. After a long period of large-scale exploitation of conventional oil and gas resources, people began to have a strong interest in heavy oil resources, because they have strong reserves. Therefore, the development of heavy oil reservoir technology also began to receive attention and attention. The development area of block du 66 fire drive well group in Shuguang Oil production Plant of Liaohe Petroleum Exploration Bureau of Panjin City, Liaoning Province, belongs to the old heavy oil area. It has entered the late stage of huff and puff development, with high production cycle, low formation pressure and high production degree. The average stimulation period of this block is 11.72, the average formation pressure is 1.29 MPA, which only accounts for 11.9% of the original formation pressure (10.8MPa), and the geological reserves are only 2.49% according to the average unit pressure drop. According to the original development mode, the oil recovery can only reach 27.2g. Based on the investigation and study of some heavy oil development methods, conversion technology and reservoir adaptability evaluation at home and abroad, it is concluded that the fire drive development mode should be chosen in the later development of block du 66 geological reservoir. This paper mainly introduces the development of fire drive in block du 66 of Shuguang Oil production Plant in Liaohe Oilfield. Through the deep study of reservoir type and geological characteristics of block du 66, the present situation and contradiction of development, and the development technology of fire drive, the dynamic regulation and control law is found out. The matching measures are optimized reasonably, and the corresponding control countermeasures are worked out, such as the combined huff and puff drainage mode, the adjustment of injection and production parameters, the reverse fire drive technology and other plane fire line control techniques, the stratified oil production pipe string, the chemical plugging of production wells, etc. The development effect of heavy oil reservoir in block du 66 is greatly improved by means of longitudinal production control technology, optimization of tail gas treatment technology, operation plugging, optimization of pipe string design, and application of the research results. Finally, it is proved by the research that the effect of increasing production is obvious. The daily oil production of the continuous production wells increased from 112.3 tons to 451.7 tons, which increased by 339.4 tons, the daily production per well increased obviously, the daily production per well in the block increased from 0.9t/d to 2.2 t / d, and the opening rate increased significantly. In the test area, the ratio of effective oil wells in the 17 well groups reached 82jianzhuan24 well group, 72jiao 50 well group was 66.The development index was obviously improved, and after fire flooding, The oil recovery rate of pilot test well group is increased from 0.29% to 2.2%, and the test area is expanded from 0.23% to 0.822%. It is estimated that the final recovery factor can reach 52.2%, which is higher than the calibrated recovery factor 27.2and the oil recovery rate is increased to 25.2%.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44
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