【摘要】：隨著勘探理論及其技術(shù)的不斷完善,火山巖油氣藏相繼在世界各大盆地相繼已被發(fā)現(xiàn)。目前,在火山巖油氣藏勘探與開發(fā)方面已獲得很大突破,火山巖儲集層的研究已經(jīng)成為近些年來國內(nèi)外油氣勘探的一個新領(lǐng)域�；鹕綆r儲層復(fù)雜而特殊,存在諸多問題需要強(qiáng)化與探索,火山巖儲層孔隙特征與演化研究對突破火山巖儲層基礎(chǔ)地質(zhì)的新進(jìn)展以及火山巖油氣藏的潛在勘探開發(fā)有著舉足輕重的意義。本文在詳細(xì)的火山巖巖石學(xué)研究的基礎(chǔ)上,準(zhǔn)確識別并定量評價不同類型巖石中各種主要的孔隙類型,以及不同類型巖石中主要孔隙組合,識別并建立孔隙形成演化序列。運(yùn)用流體-巖石相互作用、物理作用及質(zhì)量平衡原理、相平衡及熱力學(xué)理論和方法對火山巖的脫玻化孔及溶蝕孔隙進(jìn)行研究;詳細(xì)研究火山巖次生礦物的類型及分布、主要次生孔隙的形成和演化機(jī)制,建立火山巖儲層演化模式,進(jìn)而探討儲層分布規(guī)律。綜合研究取得如下結(jié)論及認(rèn)識:1.研究區(qū)火山巖類型繁多,與巖漿成分、溫度、性質(zhì)、噴發(fā)作用有著直接的關(guān)聯(lián),同種巖漿因噴發(fā)作用方式不同,可形成不同類型的巖石,本區(qū)8 口鉆井巖石化學(xué)成分析資料表明,火山巖以酸性噴發(fā)巖為主,其次為中性噴發(fā)巖。2.研究區(qū)火山巖有17種主要次生礦物,次生礦物的種類與巖石類型有關(guān),不同的巖石類型有不同的次生礦物組合,同一地區(qū)不同巖石類型次生礦物組合不同。3.按相帶統(tǒng)計興城地區(qū)36 口井的營一段107個層有效儲層有效厚度數(shù)據(jù)看出,有效儲層以爆發(fā)相為主,其次為溢流相。4研究區(qū)火山巖最基本的孔隙類型主要有原生孔隙、次生孔隙、裂縫3大類。原生孔隙主要為氣孔、粒間收縮孔縫,次生孔隙主要有脫玻化孔和溶蝕孔,裂縫有裂縫和微裂縫2類�；鹕交胰芪g孔、礫間礫內(nèi)孔等孔隙類型可由上述最基本的孔隙組合而成,各種孔隙在儲層中起著重要作用。5.識別并建立了孔隙形成演化順序,以地質(zhì)事件和巖石學(xué)證據(jù)為基礎(chǔ)討論了孔隙的演化,確定了孔隙發(fā)育規(guī)律,提出了孔隙演化的6個階段,并建立了孔隙演化模式。
[Abstract]:With the development of exploration theory and technology, volcanic oil and gas reservoirs have been discovered one after another in various basins around the world. At present, great breakthroughs have been made in the exploration and development of volcanic oil and gas reservoirs, and the study of volcanic reservoirs has become a new field of oil and gas exploration at home and abroad in recent years. Volcanic reservoirs are complex and special, and there are many problems that need to be strengthened and explored. The study on pore characteristics and evolution of volcanic reservoir is of great significance to break through the new progress of basic geology of volcanic reservoir and potential exploration and development of volcanic reservoir. On the basis of detailed petrological study of volcanic rocks, this paper accurately identifies and quantitatively evaluates various major pore types in different types of rocks, as well as major pore assemblages in different types of rocks, and identifies and establishes a series of pore formation and evolution. Based on the principles of fluid-rock interaction, physical action and mass equilibrium, phase equilibrium and thermodynamics theory and method, the debonding pore and dissolution pore of volcanic rock are studied. The types and distribution of secondary minerals of volcanic rocks and the formation and evolution mechanism of main secondary pores are studied in detail. The evolution model of volcanic rock reservoir is established and the reservoir distribution law is discussed. The conclusion and understanding of the comprehensive study are as follows: 1. There are many types of volcanic rocks in the study area, which are directly related to the composition, temperature, nature and eruption of magma. The petrochemistry analysis data of 8 wells in this area show that the volcanic rocks are mainly acidic eruption rocks, followed by neutral eruptive rocks. 2. There are 17 major secondary minerals in volcanic rocks in the study area. The types of secondary minerals are related to rock types. Different rock types have different secondary mineral assemblages and different secondary mineral assemblages of different rock types in the same area. According to the statistics of effective reservoir thickness data of 107 effective reservoirs in Yingyi formation of 36 wells in Xingcheng area, the effective reservoir is dominated by explosive facies, followed by overflow facies. 4 the most basic pore types of volcanic rocks in the study area are mainly primary pores. Secondary porosity, fracture 3 kinds. Primary pores are mainly pores, intergranular shrinkage pores, secondary pores are mainly debonding pores and corrosion pores, and fractures have two types: fracture and micro-fracture. The pore types such as pozzolanic dissolved pores and intergravelly internal pores can be formed by the combination of the above basic pores, and various pores play an important role in the reservoir. The sequence of pore formation and evolution was identified and established. Based on geological events and petrological evidence, the pore evolution was discussed, the pore development law was determined, the six stages of pore evolution were proposed, and the pore evolution model was established.
【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】：2017
【分類號】：P618.13

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