東仁溝注水示范區(qū)綜合治理方案
[Abstract]:In the Dongrengou oil area of Dingbian Oil production Plant, five reservoirs, C1-C _ 3N _ 4 _ 4 _ 5 and C _ 6-C _ 8, have the characteristics of thin monolayer, low porosity, low permeability, low reservoir pressure and strong heterogeneity between layers, etc. For a long time, they are mainly used in open-hole completion. Depending on the natural energy for oil production, the pressure decreases rapidly, the natural energy deficit in oil area is serious, the total oil production is low, and the reservoir development effect is poor. In order to develop the reservoir efficiently, the whole water injection development was carried out in the study area, but the production changed little and the water cut increased rapidly. Therefore, it is urgent to analyze the water injection performance and the high efficiency development technology in the study area. In this paper, the reservoir characteristics and geological characteristics in the study area are analyzed and studied firstly, secondly, the single well productivity, the change of water cut and the decline rule of oil well production are studied through the dynamic data of existing wells, and the system of injection-production and well pattern is analyzed and studied. Thirdly, the situation of water injection in the study area is analyzed, the effect of water injection and the condition of water injection utilization are analyzed and studied, the production degree of water drive reserves is calculated, and the final oil recovery in the study area is analyzed and forecasted in combination with the actual situation. The reasonable water injection rate, production speed and injection-production ratio in the study area are determined, and the current water injection development effect is comprehensively evaluated. Through these studies, it is considered that the study area belongs to fluvial facies, pore type is mesoporous-fine throat type and medium pore-micro-fine throat type and heterogeneity is strong; By analyzing and forming a set of development and adjustment technology suitable for the formation and development characteristics of oil field, the recovery degree of oil field is increased.
【學(xué)位授予單位】:西安石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TE357.6
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