欢D块兴隆台油层精细油藏描述及二次开发研究
发布时间：2018-12-07 10:53
【摘要】：欢D块构造上位于辽河断陷西部凹陷西斜坡南端上倾部位,主要开发目的层为兴隆台油层,油层埋深600~860m,含油面积3.45km2,属于普通稠油藏的范畴,蒸汽吞吐采油具有普通稠油藏的一般开采特点,由于受到边底水的作用,形成了边底水普通稠油藏的蒸汽吞吐开采特点。欢D块经历了多年开发,蒸汽吞吐开采阶段已进入落幕阶段,区块开发矛盾日益突出,吞吐后期开发效果差,转换开发方式势在必行。本文对欢D块进行了油藏精细地质研究,从地层特征、精细构造、沉积特征、储层特征、油藏特征、流体性质以及油层压力温度等方面进行了分析。本文进行了欢D块油藏工程分析。以欢D块兴隆台油层为目标区块,从动静态资料入手,对蒸汽吞吐的油藏动用状况、剩余油分布以及水淹状况分布进行了综合评价,从平面上看,水淹主要发生在西块和东块,从目前水淹区的水侵形式来看,区块水淹以管外窜槽导致顶水下窜为主,其次是受底水上窜。在区块开发的中、后期,在中块的部分边部井出现边水以“舌进”的形式顺着河道向中部推进的现象。有效厚度大、原始储量大的中部和北部区域等主力区块,剩余储量依然丰富;东南部边水区域油层较薄,剩余油相对分布也较少;油藏西北部断块区域剩余油较丰富,有一定的开发价值。进一步明确油藏吞吐存在的问题以及潜力。本文进行了欢D块二次开发可行性研究。在对稠油油藏吞吐末期转换开发方式进行调研的基础上,根据油藏实际情况,结合目前在欢D东块实施一注多采蒸汽驱先导试验效果分析,对SAGD、火驱及蒸汽驱等各种转换开发方式进行可行性研究,认为蒸汽驱目前油藏适应性较强,并开展了油藏工程优化设计研究,确定了油藏工程设计要点。最终确定欢D块兴隆台油层部署70×70m反九点蒸汽驱开发井组共计20个。确定转驱顺序首先选择油藏条件相对较好、井网完善程度较高、井况较好、地面工程工作量小的区域优先转驱。根据先导试验区情况逐步推广扩大实验井区,预测先导试验蒸汽驱井组一年见效,蒸汽驱6年,间歇汽驱1年,热水驱1年,累注汽量87×104t,累产油25.2×104t。
[Abstract]:Block Huan D is located in the southern tip of the western slope of the western depression of Liaohe fault depression. The main development target layer is Xinglongtai oil layer. The buried depth of the reservoir is 600 ~ 860m, and the oil-bearing area is 3.45km2, which belongs to the category of ordinary heavy oil reservoir. Steam huff and puff oil production has the general characteristics of heavy oil reservoir. Because of the action of the side and bottom water, the steam huff and puff characteristics of the common heavy oil reservoir with edge and bottom water are formed. Huan-D block has experienced many years of development, steam huff and puff mining stage has entered into the curtain stage, the block development contradiction is increasingly prominent, the development effect is poor in the later stage of huff and puff, it is imperative to change the development mode. In this paper, the reservoir fine geology of Huan D block is studied, and the stratigraphic characteristics, fine structure, sedimentary characteristics, reservoir characteristics, fluid properties and reservoir pressure temperature are analyzed. In this paper, reservoir engineering analysis of Huan D block is carried out. Taking the Xinglongtai reservoir of Huan D block as the target block and starting with the dynamic and static data, the production status, remaining oil distribution and waterflooding distribution of the steam huff and puff reservoir are comprehensively evaluated. From the plane point of view, the flooding occurs mainly in the west block and the eastern block. From the view of the current water invasion pattern in the flooded area, the water flooding in the block is mainly caused by the channeling channel outside the pipe, followed by the channeling on the top of the bottom water. In the middle and late stage of block development, in the middle part of the block, the edge water in the middle part of the block is pushed forward along the middle part of the channel in the form of "tongue entering". The remaining reserves are still abundant in the main blocks such as the central and northern regions with large effective thickness and large original reserves, the oil layers in the southeastern waterfront region are thin, and the relative distribution of remaining oil is relatively small. The remaining oil in the fault block area of northwestern oil reservoir is abundant and has certain development value. The problems and potential of reservoir huff and puff are further clarified. In this paper, the feasibility of secondary development of Huan D block is studied. On the basis of investigation and research on the transforming development mode of heavy oil reservoir at the end of huff and puff, according to the actual situation of the reservoir, combined with the analysis of the pilot test effect of steam drive with one injection and multiple production in Huan D East Block at present, the SAGD, is analyzed. The feasibility study of various conversion development methods, such as fire drive and steam drive, is carried out, and the adaptability of steam flooding is considered to be strong at present. The optimization design of reservoir engineering is studied, and the key points of reservoir engineering design are determined. A total of 20 units of 70 脳 70 m reverse nine-point steam drive development wells were determined in Xinglongtai reservoir of Huan D block. In order to determine the sequence of transfer, the first choice is that the reservoir condition is relatively good, the well pattern is perfect, the well condition is better, and the work load of surface engineering is small. According to the conditions of pilot test area, the experimental well area is gradually expanded, and it is predicted that the pilot test steam flooding group will be effective in one year, steam drive 6 years, intermittent steam drive 1 year, hot water flooding 1 year, cumulative steam injection 87 脳 10 4 t, cumulative oil 25.2 脳 10 4 t.
【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】：TE34;P618.13
本文编号：2367086
[Abstract]:Block Huan D is located in the southern tip of the western slope of the western depression of Liaohe fault depression. The main development target layer is Xinglongtai oil layer. The buried depth of the reservoir is 600 ~ 860m, and the oil-bearing area is 3.45km2, which belongs to the category of ordinary heavy oil reservoir. Steam huff and puff oil production has the general characteristics of heavy oil reservoir. Because of the action of the side and bottom water, the steam huff and puff characteristics of the common heavy oil reservoir with edge and bottom water are formed. Huan-D block has experienced many years of development, steam huff and puff mining stage has entered into the curtain stage, the block development contradiction is increasingly prominent, the development effect is poor in the later stage of huff and puff, it is imperative to change the development mode. In this paper, the reservoir fine geology of Huan D block is studied, and the stratigraphic characteristics, fine structure, sedimentary characteristics, reservoir characteristics, fluid properties and reservoir pressure temperature are analyzed. In this paper, reservoir engineering analysis of Huan D block is carried out. Taking the Xinglongtai reservoir of Huan D block as the target block and starting with the dynamic and static data, the production status, remaining oil distribution and waterflooding distribution of the steam huff and puff reservoir are comprehensively evaluated. From the plane point of view, the flooding occurs mainly in the west block and the eastern block. From the view of the current water invasion pattern in the flooded area, the water flooding in the block is mainly caused by the channeling channel outside the pipe, followed by the channeling on the top of the bottom water. In the middle and late stage of block development, in the middle part of the block, the edge water in the middle part of the block is pushed forward along the middle part of the channel in the form of "tongue entering". The remaining reserves are still abundant in the main blocks such as the central and northern regions with large effective thickness and large original reserves, the oil layers in the southeastern waterfront region are thin, and the relative distribution of remaining oil is relatively small. The remaining oil in the fault block area of northwestern oil reservoir is abundant and has certain development value. The problems and potential of reservoir huff and puff are further clarified. In this paper, the feasibility of secondary development of Huan D block is studied. On the basis of investigation and research on the transforming development mode of heavy oil reservoir at the end of huff and puff, according to the actual situation of the reservoir, combined with the analysis of the pilot test effect of steam drive with one injection and multiple production in Huan D East Block at present, the SAGD, is analyzed. The feasibility study of various conversion development methods, such as fire drive and steam drive, is carried out, and the adaptability of steam flooding is considered to be strong at present. The optimization design of reservoir engineering is studied, and the key points of reservoir engineering design are determined. A total of 20 units of 70 脳 70 m reverse nine-point steam drive development wells were determined in Xinglongtai reservoir of Huan D block. In order to determine the sequence of transfer, the first choice is that the reservoir condition is relatively good, the well pattern is perfect, the well condition is better, and the work load of surface engineering is small. According to the conditions of pilot test area, the experimental well area is gradually expanded, and it is predicted that the pilot test steam flooding group will be effective in one year, steam drive 6 years, intermittent steam drive 1 year, hot water flooding 1 year, cumulative steam injection 87 脳 10 4 t, cumulative oil 25.2 脳 10 4 t.
【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】：TE34;P618.13
【参考文献】
相关期刊论文 前1条
1 王胜利;田世澄;蒋有兰;;论精细油藏描述[J];特种油气藏;2010年04期
，本文编号：2367086
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