BL大跨度多层油田层系调整界限标准研究

发布时间：2018-09-10 16:29

【摘要】：对于采用多层合采开发模式的海上大跨度多层油田而言,随着油藏开发程度的提高,逐渐暴露出一系列弊端,层系调整已成为提高油田采收率的一种重要措施。在正确认识油田目前开发现状及开发水平和影响油田高效开发关键因素的基础上,详细论证层系重新组合政策界限,确立适用于油田的层系重新组合方案,对实现油田高效生产开发意义重大。本文以BL油田为例,基于油田目前开发现状及存在的问题,主要开展了如下几方面的工作,并取得了相应的成果:(1)归纳总结了油田地质及开发特征,为后续研究工作奠定了基础。(2)通过多种动态方法计算分析了现行开发方案可能达到采收率,采用类比法、经验公式法、数值模拟法确定了油田的潜力采收率,明确了油田具有近10%采收率增幅的开发调整潜力;选取井网完善状况类指标、水驱状况类指标、产量及储采状况类指标、含水状况类指标等四大类指标,对油田开发效果进行了评价,并分析了开发中存在的问题,明确了要实现近10%采收率增幅目标的开发调整方向(以提高纵向水驱动用程度为目标进行分层系开发调整)。(3)在认清影响BL油田开发效果关键因素的基础上,建立符合油田地质特征的机理模型,并针对层系重组参数界限开展系统性数模研究。(4)通过相关油藏工程研究,结合经济评价,建立了海上大跨度多层油田层系重组调整研究新方法,系统研究了满足开发效果的油藏层系调整下限标准及其相应的校正图版,明确了油田层系重新组合调整技术政策界限。(5)利用所建立的层系重新组合调整界限标准及其相应的校正图版,对BL油田进行层系重组,分析预测了油田层系重组调整后开发效果改善情况。层系重组调整效果预测结果表明:论文建立的层系重组调整研究新方法可行,获得的油藏层系调整下限标准及其相应的校正图版正确。
[Abstract]:For offshore large-span multi-layer oil fields with multi-layer combined production development model, with the improvement of reservoir development degree, a series of drawbacks are gradually exposed, and the adjustment of strata series has become an important measure to improve oil recovery. Based on the correct understanding of the present development situation and the development level of the oilfield and the key factors affecting the high efficiency development of the oilfield, the policy limits of the recombination of the strata system are demonstrated in detail, and the plan of the recombination of the strata system suitable for the oilfield is established. It is of great significance to realize high efficiency production and development of oil field. Taking the BL oilfield as an example, based on the present development situation and existing problems of the oilfield, this paper mainly carried out the following work, and obtained the corresponding results: (1) summarized the geological and development characteristics of the oilfield; It lays a foundation for further research work. (2) the potential oil recovery of oil field is determined by analogy, empirical formula method and numerical simulation method. (2) the potential oil recovery is calculated and analyzed by a variety of dynamic methods, and the potential oil recovery is determined by using analogy method, empirical formula method and numerical simulation method. It is clear that the oilfield has the development adjustment potential of near 10% oil recovery increase, and selects four kinds of indexes, such as well pattern perfect condition index, water drive condition index, production rate and storage and production condition index, water cut condition type index, etc. The effect of oilfield development is evaluated, and the problems existing in the development are analyzed. On the basis of recognizing the key factors affecting the development effect of BL oilfield, it is clear that the development and adjustment direction of the increase target of near 10% recovery factor (). (3), which aims to improve the longitudinal water driving degree, is based on a clear understanding of the key factors affecting the development effect of BL oilfield. To establish a mechanism model in accordance with the geological characteristics of oil field, and to carry out systematic mathematical model research on the boundary of the parameters of series reorganization. (4) through the research of related reservoir engineering, combined with economic evaluation, In this paper, a new method to study the adjustment and adjustment of strata in large span and multi-layer oil fields is established. The lower limit standard of adjustment of reservoir series and its corresponding correction chart are systematically studied to meet the development effect. The technical policy limits of the recombination and adjustment of the oilfield series are defined. (5) the BL oilfield is reorganized by using the established criteria for the readjustment and adjustment of the stratigraphic system and the corresponding correction charts. This paper analyzes and predicts the improvement of the development effect after the reorganization and adjustment of the oil field's stratigraphic system. The prediction results show that the new method established in this paper is feasible and the lower limit of reservoir adjustment and the corresponding correction chart are correct.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE53

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