發(fā)布時間：2018-01-01 17:19

  本文關(guān)鍵詞：福山凹陷流一段油氣成藏條件研究　出處：《東北石油大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 雙層斷裂 地震屬性分析 儲層預(yù)測 油藏模式 主控因素

【摘要】：福山凹陷流一段作為探區(qū)重要的產(chǎn)油層,其地位近些年來越來越重要。隨著近些年的油氣勘探的不斷深入,流一段油藏表現(xiàn)出了相當(dāng)?shù)膹?fù)雜多樣性,至今仍未查明流一段的油氣資源狀況。因此流一段成藏條件的深入研究對該層系的資源潛力評價和指導(dǎo)油氣勘探都具有重大的現(xiàn)實意義,因此開展福山凹陷流一段成藏條件研究,預(yù)測有利勘探區(qū)帶是設(shè)立本次課題的主要目的。本項目的研究以地震、錄井、測井和重磁力為資料基礎(chǔ),以沉積學(xué)、層序地層學(xué)、石油地質(zhì)學(xué)等為理論指導(dǎo),利用構(gòu)造演化分析技術(shù)、古地形恢復(fù)技術(shù)、構(gòu)造精細解釋技術(shù)、地震屬性提取分析技術(shù)、井震聯(lián)合儲層預(yù)測技術(shù)、地層巖性圈閉識別與描述技術(shù)、油藏分析評價技術(shù)等關(guān)鍵技術(shù)手段,主要開展了福山凹陷構(gòu)造結(jié)構(gòu)、斷裂展布和構(gòu)造演化特征研究;研究流一段地層展布范圍,恢復(fù)古地貌和沉積環(huán)境,分析沉積模式與不同沉積相帶的變化規(guī)律,明確有利儲層發(fā)育帶;開展油氣成藏條件研究,分析烴源巖、儲層、蓋層、儲蓋組合特征,明確油氣運、聚、保時空匹配規(guī)律;開展油氣成藏主控因素與成藏模式研究,明確不同區(qū)帶油氣藏類型,預(yù)測有利油氣聚集區(qū)帶,指導(dǎo)油氣勘探部署。本文通過對凹陷進行區(qū)域構(gòu)造地質(zhì)研究,明確了凹陷中發(fā)育上下兩套斷裂體系和雙層結(jié)構(gòu),整體具有“南北分區(qū)、東西分帶”的構(gòu)造格局。通過古沉積背景與沉積環(huán)境研究,明確了凹陷發(fā)育東西兩個次凹,沉積中心逐漸向北東方向遷移;流二段暗色泥巖厚度大、演化成熟度高是凹陷的主要烴源巖。通過開展流一段的成藏條件分析,明確了流一段發(fā)育四個物源方向、7個主要沉積體系,南側(cè)物源的辮狀河三角洲沉積體系分布范圍廣、持續(xù)發(fā)育,東西兩側(cè)物源主要發(fā)育短軸扇三角洲沉積,砂巖為主要儲層。目前流一段油氣多發(fā)現(xiàn)于深大斷層的兩側(cè),下覆流二段為主要油氣的來源,溝通油源的斷層是控制油氣整體分布的主控因素,同時巖性及儲層物性的變化影響了油氣的橫縱向展布特征。凹陷發(fā)育兩大油氣成藏期,與流一段圈閉定型期等各種成藏條件匹配良好。綜合成藏條件分析表明流一段構(gòu)造與儲層匹配形成多個大型構(gòu)造、巖性圈閉帶,可以形成構(gòu)造斷塊、巖性上傾尖滅、巖性-構(gòu)造、砂巖透鏡體和低孔滲五種油藏模式。最終認為流一段具有良好的成藏條件和資源潛力,提出了朝陽、花場和永安區(qū)帶可作為有利區(qū)帶進行進一步的油氣勘探。
[Abstract]:Fushan sag is an important oil-producing reservoir in the exploration area, its status has become more and more important in recent years. With the development of oil and gas exploration in recent years, the reservoir of Fushan section shows quite complex diversity. So it is of great practical significance to study the reservoir forming conditions for the evaluation of resource potential of this formation and to guide oil and gas exploration. Therefore, the main purpose of this project is to study the reservoir forming conditions and predict favorable exploration zones in Fushan Sag. The research of this project is based on seismology, logging, logging and gravity and magnetic force, and based on sedimentology. Sequence stratigraphy, petroleum geology and so on are used as theoretical guidance, using structural evolution analysis technology, paleotopographic recovery technology, structural fine interpretation technology, seismic attribute extraction and analysis technology, well and earthquake combined reservoir prediction technology. The identification and description technology of stratigraphic lithologic traps, reservoir analysis and evaluation technology and other key technical means, mainly carried out structural structure, fault distribution and structural evolution characteristics of the Fushan sag. The stratigraphic distribution of the first member of the flow is studied, the paleogeomorphology and sedimentary environment are restored, the variation of sedimentary model and different sedimentary facies is analyzed, and the favorable reservoir development zone is defined. The characteristics of hydrocarbon source rock, reservoir, caprock and reservoir caprock assemblage are analyzed, and the laws of hydrocarbon migration, accumulation and space-time matching are defined. The main factors and models of oil and gas accumulation are studied, the types of oil and gas reservoirs in different zones are defined, the favorable zones of oil and gas accumulation are predicted, and the exploration and deployment of oil and gas are guided. In this paper, the regional structural geology of the sag is studied. It is clear that there are two sets of fault system and double layer structure developed in the sag, the whole has the structure pattern of "north and south division, east and west zonation". The paleo-sedimentary background and sedimentary environment are studied. It is clear that there are two subcones developed in the sag, and the sedimentary center is gradually moving to the north and east direction. The dark mudstone is the main source rock in the sag with high evolution maturity. Through the analysis of the reservoir forming conditions of the first member, four source directions and seven main sedimentary systems have been identified. The braided river delta sedimentary system of the southern provenance has a wide range of distribution and continues to develop, while the source on both sides of the east and west are mainly developed by the short axial fan delta deposition. The sandstone is the main reservoir. At present, the oil and gas of the first section of flow is found on both sides of the deep fault, the second stage of the overlying flow is the main source of oil and gas, and the fault of communicating the oil source is the main controlling factor to control the whole distribution of oil and gas. At the same time, the changes of lithology and reservoir physical properties affect the horizontal and vertical distribution characteristics of oil and gas. Two major oil and gas accumulation periods are developed in the sag. The comprehensive analysis of the reservoir forming conditions shows that the fluid-first member structure matches with the reservoir to form several large structures and lithologic trap zones, which can form structural fault blocks. Lithologic updip pinning lithology structure sandstone lens and low porosity and permeability are five reservoir models. Finally it is considered that the flow first member has good reservoir forming conditions and resource potential and the Chaoyang is put forward. Huachang and Yongan belt can be used as favorable zones for further oil and gas exploration.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：P618.13

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