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寻找新的含气层系尤其是浅层气是缓解辽河油田天然气产量递减的有效途径。兴隆台油气田浅层气埋深1000~1600m,构造上处于西部凹陷兴隆台断裂背斜构造带,气源以沙三段烃源岩为主,东营组浅层气所在部位Ro在0.8%~1.3%之间,处于大量生油阶段,南部凹陷中心部位烃源岩主要处于高过成熟的生轻质油和湿气阶段,部分到干气阶段。该油田不同方向都有成熟-高过成熟烃源岩的分布,气源条件优越。该油气田东西向断层发育,在断裂活动期,断层主要起运移通道的作用;在静止期,对天然气也起一定的运移通道作用,仅具相对封堵性,对石油则以封堵作用为主。兴隆台浅层气成藏受多种因素控制,古隆起是该油气田形成的宏观地质背景,对于东营组气层来说,主要是在宏观控制因素下的微观控制因素:位于构造高部位,砂层与不同规模的断层沟通,单砂层厚度不能太大。
The search for new gas bearing strata, especially shallow gas, is an effective way to alleviate the decreasing output of natural gas in Liaohe Oilfield. The shallow gas of Xinglongtai oil and gas field has a shallow gas depth of 1000-1600m and is structurally located in the Xinglongtai anticline anticline in the western sag. The gas source is mainly composed of the third member of the Es3 source rock. The shallow part of the Dongying Formation has a Ro of 0.8% -1.3 %, In a large amount of oil generation stage. The source rocks in the central part of the southern sag are mainly in the stage of high over mature mature light oil and moisture, and partly in the dry gas stage. The oilfield is mature in all directions - higher than mature source rock distribution, gas source conditions. During the active fault period, the faults mainly play the role of transport channel. During quiescent period, they also play a role of migration channel for natural gas, with only relative sealing ability, and the blocking effect on oil is the Lord. The Xinglongtai shallow gas accumulation is controlled by many factors. The paleo-uplift is the macro-geological background of the formation of this oil and gas field. For the gas layer in Dongying Formation, it is mainly the micro-control factors under macro-control factors: Layers and faults of different sizes communicate, the thickness of a single sand layer can not be too large.