本文選題：塔河西部　切入點(diǎn)：一間房組　出處：《成都理工大學(xué)》2015年碩士論文

【摘要】：本文以塔河油田西部奧陶系一間房組碳酸鹽巖為研究對象,在充分吸收前人研究成果的基礎(chǔ)上,運(yùn)用沉積巖石學(xué)、層序地層學(xué)等多學(xué)科綜合理論,利用巖芯觀察描述、鏡下薄片鑒定、鉆井、錄井、測井綜合分析方法,開展研究區(qū)中奧陶統(tǒng)一間房組層序、沉積相以及儲層的研究。通過對研究區(qū)相關(guān)井儲層的綜合解剖,探討儲層發(fā)育分布與層序、沉積相的關(guān)系,總結(jié)研究區(qū)儲層發(fā)育分布規(guī)律及其影響因素。主要成果如下:(1)建立起研究區(qū)一間房組三級層序及四級(高頻)層序格架,研究區(qū)一間房組可劃分為1個獨(dú)立的三級層序,進(jìn)一步可劃分為5個四級層序,由下到上,分別是四級層序Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ。三級層序由海侵體系域和高水位體系域構(gòu)成,海侵體系域包含2個四級層序,高水位體系域包含3個四級層序。三級層序及四級層序均可實(shí)現(xiàn)全區(qū)對比,具有良好的可對比性。(2)在究區(qū)一間房組灘體解釋基礎(chǔ)上,以四級層序?yàn)閱卧?進(jìn)行了沉積相及灘體展布研究分析,等時、動態(tài)地揭示了一間房組沉積相及灘體的時空展布和演化。海侵體系域晚期,即第Ⅱ個四級層序時期,灘體不發(fā)育,僅局部發(fā)育小規(guī)模點(diǎn)灘;高水位體系域早期,即第Ⅲ個四級層序時期,這些臺內(nèi)點(diǎn)灘在逐漸長大,但規(guī)模也較小;到高水位體系域中晚期,灘體優(yōu)勢發(fā)育,具體體現(xiàn)在第Ⅳ個四級層序時期,區(qū)內(nèi)臺內(nèi)灘發(fā)育進(jìn)入鼎盛時期,主要形成南北兩個大型灘體,到第Ⅴ個四級層序時期,臺內(nèi)灘發(fā)育開始衰落,灘體變多,但規(guī)模有所減小。(3)對研究區(qū)儲層進(jìn)行了綜合解剖。研究區(qū)一間房組發(fā)育溶蝕孔隙型儲層、巖溶縫孔洞型儲層、洞穴型儲層及裂縫型儲層,且?guī)r溶縫孔洞型儲層在區(qū)內(nèi)最為發(fā)育。分析認(rèn)為區(qū)內(nèi)一間房組碳酸鹽巖儲層儲滲空間形成經(jīng)歷了同生期大氣水溶蝕作用、加里東中期大氣水巖溶作用、加里東晚期-海西早期大氣水巖溶作用、海西晚期埋藏?zé)嵋喝芪g作用、破裂作用。溶蝕孔隙型儲層是同生期大氣水溶蝕作用的產(chǎn)物,受控于相對海平面的變化引起的沉積相、灘體發(fā)育情況的變化;巖溶縫孔洞型儲層、洞穴型儲層是加里東晚期-海西早期大氣水巖溶作用與海西晚期埋藏?zé)嵋喝芪g作用疊加改造的產(chǎn)物,主要受控于平行不整合面控制的大氣水巖溶作用以及斷裂溝通溶蝕的規(guī)模。(4)認(rèn)識了研究區(qū)一間房組儲層的發(fā)育分布規(guī)律�？v向上,結(jié)合四級層序單元內(nèi)儲層統(tǒng)計(jì)分析認(rèn)識到區(qū)內(nèi)一間房組儲層發(fā)育具有強(qiáng)烈的靠頂部(上部)分布特征。溶蝕孔隙型儲層主要分布在高位體系域上部的第Ⅳ、Ⅴ四級層序,即一間房組上部0~40m范圍內(nèi);巖溶縫孔洞型儲層和巖溶洞穴型儲層可在整個一間房組第Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ個四級層序內(nèi)發(fā)育,但主要分布在第Ⅲ、Ⅳ、Ⅴ個四級層序中,尤其是在第Ⅳ、Ⅴ四級層序中;裂縫型儲層在研究區(qū)發(fā)育較少,規(guī)律性不是很明顯。平面上,灘相溶蝕孔隙型儲層僅發(fā)育在灘體內(nèi)部,可能受古地理制約,北部灘體更容易發(fā)育此類儲層;巖溶縫孔洞型儲層在灘體內(nèi)部,灘間部位均可發(fā)育,但具灘體內(nèi)更發(fā)育的特征,且均表現(xiàn)為與斷裂的關(guān)系密切,灘體與斷裂的疊合部位是這兩類儲層發(fā)育的有利部位。
[Abstract]:This group of carbonate reservoirs in Tahe oilfield Ordovician in Western room as the research object, based on absorbing the results of previous studies, using sedimentary petrology, sequence stratigraphy theory and other disciplines, the use of core observation, thin section identification, drilling, logging, logging comprehensive analysis method, research area in Ordovician room sequence, sedimentary facies and reservoir research. Through the comprehensive anatomy of the study area of reservoir, reservoir distribution and sequence, the relationship of sedimentary facies, summarized the reservoir distribution law and its influencing factors. The main results are as follows: (1) establish a study room block three order sequence and four grade (high frequency) sequence frame, a room group study area can be divided into 1 independent three order sequences can be further divided into 5 four order sequences from bottom to top, respectively is four grade sequence I, II, III, IV, v. The three sequence consists of transgressive and highstand systems tract, transgressive system tract contains 2 four level sequence, HST consists of 3 four level sequence. Three grade sequence and four sequences can be compared with the contrast, good. (2) in a room of study area group the beach body based on the interpretation of grade four in the unit of sequence, the sedimentary facies and beach body distribution analysis, etc., dynamically reveal the sedimentary facies and yijianfangformation shoal at the time space distribution and evolution. The transgressive stage, namely the second four level sequence period, beach body development only, the local development of small scale point beach; HST early, namely III four level sequence period, the station point beach in gradually grew up, but the scale is smaller; to the late HST, beach development advantages, embodied in Article IV four level sequence period in the region intraplatform development into the peak During the period, mainly formed two large South Beach, to the V four level sequence period, intraplatform shoal development began to decline, more, but the scale decreased. (3) in the study area reservoir comprehensive anatomy. A room of group developed dissolution pore reservoir, karst fracture pore type reservoir, cave type reservoir and fractured reservoir, and the karst seam hole type reservoir in the region is the most developed area. The results indicated that yijianfangformation carbonate reservoir space through syngenetic dissolution of atmospheric water formation, middle Caledonian karstification of atmospheric water. Gary East Hercynian early meteoric water karstification, burial in late Hercynian hydrothermal dissolution, fracturing. Dissolution pore reservoir is a product of syngenetic dissolution of atmospheric water and sedimentary changes controlled by relative sea-level change phase, beach body development condition; karst seam hole reservoir layer That is the cave type reservoir in late Caledonian Early Hercynian period meteoric water karstification and burial in late Hercynian hydrothermal superimposed dissolution products, mainly controlled by atmospheric water rock parallel unconformity controlled dissolution and fracture dissolution communication scale. (4) understanding the distribution regularity of the development of a real research group the reservoir. Vertically, with the four grade sequence unit of reservoir in the statistical analysis to recognize area yijianfangformation reservoir development strongly rely on the top (upper). The distribution of dissolved pore type reservoir is mainly distributed in the upper part of the fourth HST, V four level sequence, namely a room is the range of 0~40m; karst fracture vuggy reservoir and karst cave type reservoir in the whole room group I, II, III, IV, V development four level sequence, but mainly in group III, IV, V four level sequence, especially in the fourth. V four order sequence ; fractured reservoir in the study area is less developed, regularity is not obvious. On the plane, beach erosion pore type reservoir is developed in beach body, may be affected by the paleogeographic constraints, North Beach Body easier development of this kind of reservoir; karst fracture pore type reservoir in the beach body, beach room site can be developed, but with more features in the development of the beach, and showed close relationship with fracture, and fracture of the composite beach body parts are these two types of reservoir development favorable position.

【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;P539.2

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