井间示踪剂技术在大庆油田D区的应用研究
发布时间：2018-11-21 16:13
【摘要】：我国大部分注水开发油田已处于开发后期,油井含水高达90%以上。大庆油田D区就目前的开发效果看,部分区块低产低效井数多,滞留区多,平面开采不均衡,储量动用程度低,措施挖潜效果差,还有一些区块存在注水压力增长速度较快,部分井投产后即高含水,全区见水井数较多,且含水上升速度快等问题。示踪剂测试技术便是一种认识油藏非均质性的技术,可以利用井间示踪剂技术,通过观察示踪剂在采油井中的开采动态,如示踪剂在生产井的突破时间,峰值的大小及个数、相应注入流体的总量、采出的示踪剂数量等参数,可定性地判断地层中高渗透条带、大孔道、天然裂缝、人工裂缝、气窜通道、封闭断层、封闭隔层的存在与否,而且可定量地求出高渗条带、大孔道、天然裂缝、人工裂缝、气窜通道的有关地层参数,如高渗层厚度、渗透率、以及孔道半径等地层参数,为今后开发方案调整及调剖、堵水等效果评价提供科学依据,指导制定可行的提高油田采收率的调整措施。针对大庆油田D区的四个区块,优选20口注水井开展井间示踪剂监测试验。本文研究了区块的地质特征和开发现状,总结了化学示踪剂、放射性同位素示踪剂、非放射性示踪剂、微量物质示踪剂优缺点以及筛选原则,综合评价了各类示踪剂的性能,选择出适合各个井组的示踪剂,确定示踪剂合适的用量,在区块内进行井间示踪剂试验。然后对对应采出井进行取样分析与示踪剂浓度检测,通过分析示踪剂检测结果,包括示踪剂的突破时间,峰值时间,峰值大小,以及峰值持续时间等,得出区块内断层的存在与否,油水井组间连通关系,砂体的发育情况,目标井见水来水方向,以及油层的裂缝发育情况。研究成果可以为大庆油田D区的水驱开发方案调整提出合理建议。
[Abstract]:Most of the waterflooding oil fields in China are in the late stage of development, and the water cut of oil wells is more than 90%. According to the current development effect in D area of Daqing Oilfield, there are many low production and low efficiency wells in some blocks, many remaining areas, uneven planar exploitation, low reserve production, poor potential tapping measures, and some blocks have relatively fast water injection pressure growth rate. Some wells have high water cut after they are put into production, many wells are found in the whole area, and the water cut rises rapidly. Tracer testing technology is a technique to recognize reservoir heterogeneity. It can use cross-well tracer technology to observe the recovery performance of tracer in oil well, such as the breakthrough time of tracer in production well, the size and number of peak value. The parameters such as the total amount of injected fluid and the amount of tracer produced can be used to determine qualitatively the existence of high permeability zones, large pore channels, natural fractures, artificial fractures, gas channeling channels, closed faults, and sealed interlayers in the formation. In addition, the formation parameters such as the thickness, permeability and radius of high permeability zone, large pore channel, natural fracture, artificial fracture and gas channeling channel can be quantitatively calculated for the adjustment and profile control of the development plan in the future. The evaluation of water shutoff and other effects provides scientific basis to guide the formulation of feasible adjustment measures to improve oil recovery. According to the four blocks in D area of Daqing Oilfield, 20 water injection wells were selected to carry out cross-well tracer monitoring test. This paper studies the geological characteristics and development status of the block, summarizes the advantages and disadvantages of chemical tracer, radioisotope tracer, non-radioactive tracer, trace material tracer and screening principle, and comprehensively evaluates the properties of various tracers. The tracer suitable for each well group was selected, and the appropriate amount of tracer was determined, and the cross-well tracer test was carried out in the block. Then sampling analysis and tracer concentration detection are carried out on the corresponding production wells, and the results of tracer detection are analyzed, including the breakthrough time of tracer, the peak value, and the peak duration, etc. Whether the fault exists in the block or not, the connection between oil and water wells, the development of sand body, the direction of water coming from the target well, and the fracture development of the reservoir are obtained. The research results can provide reasonable suggestions for the adjustment of water drive development scheme in D area of Daqing Oilfield.
【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】：TE357.6
本文编号：2347486
[Abstract]:Most of the waterflooding oil fields in China are in the late stage of development, and the water cut of oil wells is more than 90%. According to the current development effect in D area of Daqing Oilfield, there are many low production and low efficiency wells in some blocks, many remaining areas, uneven planar exploitation, low reserve production, poor potential tapping measures, and some blocks have relatively fast water injection pressure growth rate. Some wells have high water cut after they are put into production, many wells are found in the whole area, and the water cut rises rapidly. Tracer testing technology is a technique to recognize reservoir heterogeneity. It can use cross-well tracer technology to observe the recovery performance of tracer in oil well, such as the breakthrough time of tracer in production well, the size and number of peak value. The parameters such as the total amount of injected fluid and the amount of tracer produced can be used to determine qualitatively the existence of high permeability zones, large pore channels, natural fractures, artificial fractures, gas channeling channels, closed faults, and sealed interlayers in the formation. In addition, the formation parameters such as the thickness, permeability and radius of high permeability zone, large pore channel, natural fracture, artificial fracture and gas channeling channel can be quantitatively calculated for the adjustment and profile control of the development plan in the future. The evaluation of water shutoff and other effects provides scientific basis to guide the formulation of feasible adjustment measures to improve oil recovery. According to the four blocks in D area of Daqing Oilfield, 20 water injection wells were selected to carry out cross-well tracer monitoring test. This paper studies the geological characteristics and development status of the block, summarizes the advantages and disadvantages of chemical tracer, radioisotope tracer, non-radioactive tracer, trace material tracer and screening principle, and comprehensively evaluates the properties of various tracers. The tracer suitable for each well group was selected, and the appropriate amount of tracer was determined, and the cross-well tracer test was carried out in the block. Then sampling analysis and tracer concentration detection are carried out on the corresponding production wells, and the results of tracer detection are analyzed, including the breakthrough time of tracer, the peak value, and the peak duration, etc. Whether the fault exists in the block or not, the connection between oil and water wells, the development of sand body, the direction of water coming from the target well, and the fracture development of the reservoir are obtained. The research results can provide reasonable suggestions for the adjustment of water drive development scheme in D area of Daqing Oilfield.
【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】：TE357.6
【共引文献】
相关期刊论文 前2条
1 于瑞香;张泰山;周伟生;;油田示踪剂技术[J];工业水处理;2007年08期
2 谢佃和;蒋忠明;于能文;;利用放射性同位素示踪技术评价水驱状况[J];新疆石油天然气;2008年04期
，本文编号：2347486
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