本文選題：復雜斷塊油藏 + 生產(chǎn)層位　； 參考：《西南石油大學》2015年碩士論文

【摘要】：復雜斷塊油藏在我國范圍內(nèi)分布非常廣泛,其儲量和產(chǎn)量在我國占有相當大的比例。本文以潿洲6-12油田為例,該油田位于南海北部海域北部灣盆地,是典型的復雜斷塊油藏,具有明顯的復雜斷塊油藏地質特征。 本文在大量國內(nèi)外文獻調研的基礎上,針對潿洲6-12油田在開發(fā)過程中油井產(chǎn)量遞減較快、生產(chǎn)層位之間相互干擾、油藏采油速度過大、地層壓力下降快及低部位井出水等問題,結合潿洲6-12油田地質和開發(fā)動態(tài)特征,主要開展以下幾方面的工作,并取得了相應的研究成果： (1)對潿洲6-12油田復雜斷塊油藏的構造特征、沉積特征、儲層物性及流體特征等進行了分析與總結,研究其油藏類型并對其儲層天然能量進行了評價。 (2)分析了油藏開發(fā)現(xiàn)狀,分別對A1/A2/A4/A6/A3S1/A7井進行了產(chǎn)能分析,通過研究目標區(qū)塊未達到配產(chǎn)的原因,找出了其產(chǎn)量遞減的規(guī)律。針對生產(chǎn)過程中的某些生產(chǎn)層位氣油比較高等問題,通過單井動態(tài)分析方法,分析部分生產(chǎn)油組是否存在氣頂。 (3)由于油藏大多屬于邊水油藏,在開發(fā)過程中,應主要考慮油井水體的影響,并控制其采油速度,防止水推進過快。明確了不同區(qū)域流體的分布,建立了流體空間分布模型。 (4)在多層合采過程中可能存在層間干擾,使得油組開發(fā)程度不均。針對這一問題,通過數(shù)值模擬方法對油井生產(chǎn)層位組合、單井工作制度以及補充能量方式進行模擬研究,對其生產(chǎn)優(yōu)化論證結果進行方案比選,得到較優(yōu)的推薦方案,并預測開發(fā)指標。
[Abstract]:Complex fault block reservoirs are widely distributed in China, and their reserves and production occupy a large proportion in China. This paper takes Weizhou 6-12 oilfield as an example, which is a typical complex fault block reservoir located in the Beibu Bay basin in the northern South China Sea, and has obvious geological characteristics of complex fault block reservoir. Based on a large number of domestic and foreign literatures, this paper aims at the problems of rapid decline of oil well production, mutual interference between production layers, excessive oil recovery rate, rapid drop of formation pressure and low position well water in Weizhou 6-12 oilfield. Combined with the geological and development characteristics of Weizhou 6-12 oilfield, the following aspects are mainly carried out, and the corresponding research results are obtained. 1) the structural characteristics, sedimentary characteristics, reservoir physical properties and fluid characteristics of complex fault-block reservoirs in Weizhou 6-12 oilfield are analyzed and summarized. The reservoir types are studied and the natural energy of reservoirs is evaluated. 2) the present situation of reservoir development is analyzed, and productivity analysis of A1/A2/A4/A6/A3S1/A7 well is carried out, and the law of production decline is found by studying the reason why the target block has not reached the distribution of production. In view of the problems of high gas and oil in some production layers during production, this paper analyzes whether gas cap exists in some oil production groups by the method of single well dynamic analysis. 3) because most of the reservoirs belong to edge water reservoirs, in the process of development, we should mainly consider the influence of oil well water body, and control the oil recovery speed to prevent the water from pushing too fast. The distribution of fluid in different regions is clarified, and the spatial distribution model of fluid is established. 4) interlayer interference may exist in the process of multilayer combined production, which makes the development degree of oil group uneven. In order to solve this problem, the production horizon combination, single well working system and supplementary energy mode of oil well are simulated by numerical simulation method, and the results of production optimization demonstration are compared and selected, and a better recommended scheme is obtained. And forecast the development index.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE347

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