聚表二元复合驱开发效果评价

发布时间：2018-10-11 06:52

【摘要】：聚表二元复合驱是聚驱后进一步提高采收率的重要技术。近年来,我国海上渤海油田开展了大规模聚合物驱试验,取得了显著效果。为进一步提高采收率,2010年渤海A油田开展了我国海上首次聚表二元复合驱。相比较陆上胜利、大庆等油田丰富的化学驱理论及矿场经验,海上油田化学驱还处于起步阶段,而且海上油田受平台寿命、淡水缺乏等局限性,导致其化学驱见效特征及效果评价方法难度较大,需集成创新。在评价海上油田二元复合驱开发效果时,其前期水驱、聚驱的影响不可忽略,为此本文综合建立一个考虑前期水驱、聚驱开发历程的二元复合驱开发效果评价体系。在摸清、评价油田水驱开发动态的前提下,提出了新型水驱含水率预测模型,可以用于评价海上油田水驱和化学驱开发过程中提液、调剖等工艺措施开发效果。总结了聚合物驱、二元复合驱注采井见效特征,提出了3种化学驱采收率标定新方法:聚合物驱含水率模型法、二元复合驱含水率模型法、产水变化率图版法。根据渤海聚驱后直接转二元复合驱的客观情况,提出了聚合物驱含水率下降漏斗法,解决了二元复合驱协同见效问题。并将二元复合驱增油量解读为3个层次:相比模拟水驱方案增油量、相比聚合物驱设计方案增油量、相比持续聚驱方案增油量。针对渤海油田复合驱开发效果一般的情况,从室内实验及矿场对比两方面进行了探讨。最后提出了海上油田化学驱流度设计方法,可以在室内实验基础上,快速合理的设计出满足矿场需要的化学驱流度。最终形成了系统的海上油田二元复合驱开发效果评价体系。
[Abstract]:Polymeter binary composite flooding is an important technology for further improving oil recovery after polymer flooding. In recent years, large-scale polymer flooding experiments have been carried out in Bohai Oilfield, and remarkable results have been obtained. In order to further improve oil recovery, the Bohai Sea A Oilfield carried out the first offshore dual compound flooding in China in 2010. Compared with the onshore victory, Daqing and other oilfields are rich in chemical flooding theory and field experience. Chemical flooding in offshore oil fields is still in its infancy, and offshore oil fields are limited by platform life and lack of fresh water. As a result, it is difficult to evaluate the effect of chemical flooding, so it is necessary to integrate innovation. In evaluating the development effect of dual compound flooding in offshore oilfield, the effect of water flooding and polymer flooding can not be ignored. Therefore, this paper establishes an evaluation system for the development effect of dual compound flooding considering the development history of water flooding and polymer flooding. On the premise of finding out and evaluating the development performance of oilfield water flooding, a new water flooding water cut prediction model is put forward, which can be used to evaluate the development effect of technological measures such as extraction and profile control in the process of water flooding and chemical flooding in offshore oil fields. This paper summarizes the effective characteristics of polymer flooding and binary compound flooding injection and production wells, and puts forward three new methods of chemical flooding oil recovery calibration: polymer flooding water cut model method, binary composite flooding water cut model method and water production change rate chart method. According to the objective situation of direct conversion to binary compound flooding after polymer flooding in Bohai Sea, a method of decreasing water cut in polymer flooding is put forward, which solves the problem of synergistic effect of binary composite flooding. The oil increment of binary composite flooding is interpreted as three levels: compared with the simulated water flooding scheme, the polymer flooding design increases the oil quantity, and the continuous polymer flooding scheme increases the oil production. Aiming at the general development effect of compound flooding in Bohai Oilfield, the laboratory experiment and field contrast are discussed. Finally, the design method of chemical flooding mobility in offshore oil field is put forward, which can be used to design the chemical flooding mobility to meet the needs of mine field quickly and reasonably on the basis of laboratory experiments. Finally, a systematic evaluation system for the development effect of dual compound flooding in offshore oil field is formed.
【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】：TE357.46

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