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一种计算油田注水系统效率的方法 总被引:1,自引:0,他引:1
通过对油田注水系统效率分析、实例计算,介绍了一种计算注水系统效率的方法,为分析油田注水系统效率提供了依据。从电动机、注水泵和管网运行效率等3个方面,分析了影响注水系统效率的因素,进一步提出了优化注水工艺,提高注水泵效率,合理匹配增压泵和调整注水管网,增加油田注水系统效率的方法。该方法在文留油田应用后,注水系统效率提高了2%~5%,取得了良好的经济效益,。 相似文献
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注水系统是高能耗系统,提高注水效率,降低注水用电单耗是油田节能工作的一个重要课题。通过对注水工艺,注水设备及管网的全面调查研究及改造,揭示了提高注水泵机组效率及管网效率的节能途径,取得了显著的经济效益。 相似文献
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油田注水系统节能增效技术研究现状 总被引:1,自引:0,他引:1
从注水泵和不系统管网两个方面分析了油田注水系统能耗大、效率低的原因、并分别从局部和整体的角度综述了我国当前所采用的注水系统节能增效技术现状。局部在 注水泵设计制造和泵效研究以及注水管网效率研究方面。指出在进一步开发高效节能注水泵的同时,应开展注水用调速装置的研究,建议及采取措施降低注水节流时的水流损失,以大幅度提高管网效率。最后阐述了采用系统分析方法对注水系统进行整体研究的进展情况,认为将计算机技 相似文献
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文中从注水地面系统效率及能耗计算公式的分析出发,提出注水泵效率及管网效率低是影响孤东油田注水系统效率的主要因素。要提高两者的效率,重点是对低效泵进行技术改造,推广应用高效大排量离心泵,提高泵修质量及配件质量,推广应用注水泵站生产微机自动监控系统,实现注水泵站生产的优化运行,确保各注水泵在最佳高效工况下使用。针对配水间节流损失问题,通过强化水井测调力度和系统降压,以及重点井应增压泵。针对泵干压差大的问题,则进行注水泵拆级改造,以及实施微机监控,实现系统优化自动调节控制。针对老旧单井管线结垢引起的水力损失问题,采取了更新改造。针对注水计量误差大的问题,推广应用了新型电磁流量计量。实践证明,这些措施均十分有效,并取得显著的应用效果。 相似文献
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油田注水是保持地层压力,保证油田长期稳产高产的重要措施。注水用电量约占整个油田总用电量的40%。由于系统中各注水井的吸水能力及配注量不同,同时,还要保证注水井的测试、洗井等用水,因此,在生产过程中注水流量波动较大。为了适应注水量的波动,则需频繁调整注水泵运行方式。一般只能通过调节阀门来控制流量,这必然会使注水泵与管网之间产生压差。大庆油田各采油厂的注水系统的泵管压差造成的能量损失占泵输出能量的2.5%-15.0%。因此。使用高效的注水管网压差自动调节装置来调解管网压差是很有必要的。 相似文献
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通过对江汉油田近几年来注水系统效率的统计分析,指出了江汉油田注水系统效率偏低的主要因素及其提高注水系统效率的途径。在分析中,特别提出王场油田注水系统效率低于全油田平均数值的诸因素中,管网效率偏低的原因主要是管压与注水井注水压力不匹配,形成高管压、低注水压力的局面,并提出了王场油田比较合适的管压,以此来提高管网效率,从而提高王场油田及其全油田的注水系统效率。 相似文献
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单家寺油田是一个埋藏较深的具有活跃边,底水的稠油油田。蒸汽吞吐曾获得很好的开采效果,但由于边,底水的侵入,最终蒸汽吞吐采收率较低。为了探索利用蒸汽驱方式提高采收率的新途径,在该油田开辟了蒸汽驱先导试验区。在分析蒸汽驱和热水驱驱渍机理的基础上,结合该油田现场及实验室实际资料和蒸汽驱跟踪数值模拟结果,对单家地油田蒸汽驱驱油条件和驱油机理进行分析 相似文献
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聚合物驱油三种机采方式的能耗评价 总被引:2,自引:0,他引:2
为了弄清聚合物驱油对杆式泵、电潜泵、螺杆泵的影响,以及这三种机采方式用于聚合物驱采油时的能耗状况,进行了三种机采方式的系统效率与能耗的测试与计算,并与水驱时三种机采方式的系统效率与能耗值进行了对比。同时对聚合物、水驱这三种机采方式的能耗进行了评价,结果表明,对杆式泵井,聚合物驱动的能耗是水驱能耗的1.1倍;对电潜泵井,聚合物驱时的能耗是水驱能耗的1.6倍;对螺杆泵井,聚合物驱与水驱时的能耗基本相当 相似文献
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Yahya Al-Wahaibi Hamoud Al-Hadrami Saif Al-Bahry Abdulkadir Elsha?e Ali Al-Bemani Sanket Joshi 《石油科学(英文版)》2016,13(1):100-109
This study investigates the potential of enhancing oil recovery from a Middle East heavy oil field via hot water injection followed by injection of a chemical surfactant and/or a biosurfactant produced by a Bacillus subtilis strain which was isolated from oil-contaminated soil. The results reveal that the biosurfactant and the chemical surfactant reduced the residual oil saturation after a hot water flood. Moreover, it was found that the performance of the biosurfactant increased by mixing it with the chemical surfactant. It is expected that the structure of the biosurfactant used in this study was changed when mixed with the chemical surfactant as a probable synergetic effect of biosurfactant-chemical surfactants was observed on enhancing oil recovery, when used as a mixture, rather than alone. This work proved that it is more feasible to inject the biosurfactant as a blend with the chemical surfactant, at the tertiary recovery stage. This might be attributed to the fact that in the secondary mode, improvement of the macroscopic sweep efficiency is important, whereas in the tertiary recovery mode, the microscopic sweep efficiency matters mainly and it is improved by the biosurfactant-chemical surfactant mixture. Also as evidenced by this study, the biosurfactant worked better than the chemical surfactant in reducing the residual heavy oil saturation after a hot water flood. 相似文献
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Evaluation of the effectiveness of chemical flooding using heterogeneous sandpack flood test 总被引:3,自引:0,他引:3
Alkaline flooding appears to be a promising process for enhancing heavy oil recovery after primary or secondary production from those reservoirs where thermal processes are not applicable. However, due to the heterogeneity of the reservoirs, the injected chemical solutions may flow to the producing wells through the high permeable channels and bypass the residual oil, resulting in poor volumetric sweep efficiency. Thus, evaluating the chemical blends and the injection strategies through laboratory tests with proper heterogeneous physical models can substantially reduce the risks of field application of this process.In this study, a new experimental method, channelled-sandpack flooding test, is designed to simulate the channeling phenomenon of actual heavy oil reservoirs during the chemical flooding process. The channelled-sandpacks are used to re-evaluate the effectiveness of chemical blends screened through the homogeneous sandpack flood tests. It is found that the effectiveness of the best blend obtained through homogeneous sandpack flood tests is significantly reduced in the channelled-sandpack flood tests. This demonstrates that using heterogeneous physical model, rather than the conventional homogeneous sandpack flood tests, to screen the chemical blends is necessary for designing the chemical flooding process in heterogeneous heavy oil reservoirs. With further experiments carried out for the modified blends with the channelled-sandpack flood tests, an optimal chemical blend can be determined for certain heterogeneous reservoirs. The optimal chemical blend can selectively block the high permeability zones and improve the sweep efficiency for a particular heterogeneous sandpack, thereby significantly enhancing the tertiary oil recovery. The new developed channelled-sandpack flood test should facilitate the optimization, design and implementation of chemical flooding and other enhanced heavy oil recovery processes. 相似文献
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古城油田BQ10区块超稠油降粘集输工艺 总被引:3,自引:0,他引:3
通过对古城BQ10区块超稠油掺稀油降粘集输、掺热水降粘集输现场试验分析,提出并实施了污水回掺降粘集输工艺。由区块单元进行污水回掺,联合站进行集中处理说明,污水回参工艺优于掺稀油,更优于单纯掺热水降粘集输工艺;污回掺可有效利用热能进行二次做功,降低井口或干线回压,改善油井的出油状况,提高油井泵效,增加单井产油量;掺污管线并不会生堵管事故,使于生产管理。 相似文献