本文選題：方正斷陷 + 源巖��； 參考：《東北石油大學》2015年碩士論文

【摘要】：方正斷陷位于松遼盆地東側(cè)的依舒地塹北段,油氣藏整體上呈東西分布,然而對于東西部成藏的差異是什么,油氣在不同構(gòu)造不同層位上受什么因素影響成藏還不是很清楚。因此,分析方正斷陷油氣成藏要素對油氣成藏的控制作用使至關重要的,并且對于認識方正斷陷油氣分布和勘探具有重要指導意義。在充分利用方正斷陷地質(zhì)、地震、測井和鉆井資料的基礎上,分析方正斷陷油氣成藏的要素,主要有源巖、圈閉和輸導通道三個方面。通過油藏解剖,明確了油氣成藏要素在空間上和時間的匹配關系和類型�？臻g匹配關系科分為3種:①源內(nèi)圈,是新安村+烏云組斷層遮擋圈閉位于新安村+烏云組源巖內(nèi),由砂體側(cè)向連接新安村+烏云組源巖和其內(nèi)圈閉;②源上圈,是寶一段圈閉位于新安村+烏云組源巖之上,由Ⅵ類斷裂垂向連接新安村+烏云組源巖和其上寶一段圈閉;③源下側(cè)圈,是基巖斷鼻圈閉或白堊系斷圈位于新安村+烏云組源巖之下,由于Ⅵ類斷裂側(cè)向連接新安村+烏云組源巖和與其對接基巖或由不整合面?zhèn)认蜻B接新安村+烏云組源巖和與其對接的白堊系圈閉。時間匹配關系分為2種:①源巖大量排烴期與斷裂活動期匹配關系;②油氣運移期與圈閉形成期匹配關系。通過方正斷陷東西部油氣分布規(guī)律的研究,表明縱向上東部在寶泉嶺組、新安村+烏云組和基底地層為油氣聚集的主要層位,而西部油氣主要是在新安村+烏云組和白堊系地層聚集;平面上對比東西部油氣分布情況,得出西部含油氣性好于東部。在油氣分布規(guī)律基礎上,結(jié)合油氣成藏要素的時空匹配關系,確定了油氣成藏要素時空匹配關系控制油藏的作用有2個方面:①油氣成藏要素空間匹配關系控制油氣聚集范圍和部位,即:(1)源巖分布控制油氣的成藏與分布;(2)圈閉類型控制油氣藏類型;(3)輸導通道控制油氣聚集的具體部位;②油氣成藏要素時間匹配控制油氣聚集程度。
[Abstract]:Fangzheng fault depression is located in the northern section of Yishu graben on the east side of Songliao Basin. The oil and gas reservoirs are distributed east-west as a whole. However, it is not very clear what is the difference between the east and the west and what factors affect the formation of reservoirs in different structural and different strata. Therefore, it is very important to analyze the controlling effect of oil and gas accumulation elements in Fangzheng fault depression on oil and gas accumulation, and it is of great guiding significance to understand the hydrocarbon distribution and exploration in Fangzheng fault depression. On the basis of making full use of the geological, seismic, logging and drilling data of Fangzheng fault depression, the factors of hydrocarbon reservoir formation in Fangzheng fault depression, the main active rocks, traps and transportation channels are analyzed. Through reservoir anatomy, the matching relationship and types of oil and gas accumulation elements in space and time are determined. The family of spatial matching relations is divided into three types: 1 source inner circle. It is located in the source rock of Xinancun Wuyun formation by fault shielding trap, and connects the source rock of Xinancun Wuyun formation and its inner trap Shui2 source circle from the side of the sand body to the source rock of the Wuyun formation of Xinancun formation, which is located in the source rock of the Wuyun formation of Xinancun formation. It is located on the source rock of the Wuyun formation of Xinancun formation, and is vertically connected with the source rock of the Wuyun formation of Xinancun formation by type VI fault and the lower side of the source of the trap No. 3 of its Shangbao formation. The fault nose trap of bedrock or Cretaceous fault circle is located under the source rock of Wuyun formation in Xinancun formation. Due to the lateral connection of type VI faults to the source rocks of the Xinancun Wuyun formation and their docking bedrock or to the Cretaceous traps connected laterally from unconformable surfaces to the source rocks of the Xinancun Wuyun formation. The time matching relationship can be divided into two types: the massive hydrocarbon expulsion stage and the fault activity stage of the source rocks. The oil and gas distribution in the eastern and western parts of the Fangzheng fault depression is studied. It is shown that the east part is in the Baoquanling formation, the Xinancun Wuyun formation and the basement strata are the main horizons of oil and gas accumulation. The oil and gas in the west is mainly concentrated in the Wuyun formation and the Cretaceous strata in Xinancun, and the oil and gas distribution in the eastern and western regions is contrasted on the plane, it is concluded that the hydrocarbon bearing property in the west is better than that in the east. Based on the distribution of oil and gas, combined with the space-time matching relation of oil and gas accumulation elements, It is determined that the spatiotemporal matching relationship of hydrocarbon reservoir forming elements controls the oil and gas accumulation range and position in two aspects: 1. That is, the distribution of source rocks controls the accumulation and distribution of oil and gas. 2) the type of trap controls the type of oil and gas accumulation. (3) the specific location of oil and gas accumulation is controlled by the migration channel. The time matching of oil and gas accumulation elements controls the degree of oil and gas accumulation.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13

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