本文選題：新場構(gòu)造帶　切入點(diǎn)：須家河組二段　出處：《成都理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：新場構(gòu)造帶須家河組二段埋藏較深,主要處于中成巖B期,屬于特低孔、低滲透致密砂巖儲(chǔ)層,非均質(zhì)性很強(qiáng),成巖作用對儲(chǔ)層的影響非常顯著,是控制儲(chǔ)層質(zhì)量的關(guān)鍵因素,而成巖相是儲(chǔ)層中各種成巖作用的直接表現(xiàn)。本文以新場構(gòu)造帶須家河組二段為研究對象,以巖芯觀察和薄片鑒定為基礎(chǔ),結(jié)合掃描電鏡、X-射線衍射、陰極發(fā)光、電子探針、包裹體測溫、碳、氧同位素測試、物性分析等手段進(jìn)行了儲(chǔ)層巖石學(xué)特征、成巖作用和成巖相類型及特征的研究。通過對測井響應(yīng)特征分析建立的成巖相測井解釋模型是研究區(qū)成巖相劃分的重要手段,再以成巖相常規(guī)劃分方法為基礎(chǔ),綜合研究錄井顯示、測井解釋和生產(chǎn)測試等資料,總結(jié)出了各主要成巖相的綜合判別標(biāo)準(zhǔn)。再通過單井和連井成巖相的劃分與對比分析,明確了研究區(qū)須二段成巖相空間展布特征,并且進(jìn)一步分析了其中有利成巖相控制因素。論文取得的主要成果如下:1.研究區(qū)須家河組二段儲(chǔ)層砂巖最主要的巖石類型為巖屑砂巖、巖屑石英砂巖和長石巖屑砂巖。須二段各亞段儲(chǔ)層砂巖在組分、結(jié)構(gòu)、膠結(jié)物類型及孔隙類型上都存在著差別。2.研究區(qū)須家河組二段儲(chǔ)層砂巖的破壞性成巖作用有壓實(shí)作用和膠結(jié)作用;建設(shè)性成巖作用有溶蝕作用和破裂作用;保持性成巖作用有綠泥石環(huán)邊膠結(jié)作用及部分早期碳酸鹽、硅質(zhì)膠結(jié)作用。3.研究區(qū)須家河組二段整體處于中成巖階段B期,各亞段具有不同的成巖演化歷史。壓實(shí)作用是造成研究區(qū)須家河組儲(chǔ)層孔隙度降低的第一重要因素,碳酸鹽膠結(jié)作用和硅質(zhì)膠結(jié)作用使研究區(qū)砂巖進(jìn)一步致密化。4.研究區(qū)須家河組二段主要成巖相類型有壓實(shí)相、溶蝕相、鈣質(zhì)膠結(jié)相、硅質(zhì)膠結(jié)相、綠泥石膠結(jié)相、破裂相以及溶蝕—壓實(shí)相、溶蝕—膠結(jié)相和膠結(jié)—壓實(shí)相等。5.須二段有利于相對優(yōu)質(zhì)儲(chǔ)層發(fā)育的成巖相為綠泥石膠結(jié)相、破裂相和溶蝕相,硅質(zhì)膠結(jié)相和溶蝕-壓實(shí)相在一定程度上也是有利的成巖相,是較有利的成巖相,而鈣質(zhì)膠結(jié)相、壓實(shí)相和膠結(jié)-壓實(shí)相則不利于儲(chǔ)層的發(fā)育。6.成巖相的控制因素主要有砂巖巖石學(xué)特征、沉積微相和裂縫發(fā)育程度。
[Abstract]:The second member of Xujiahe formation in Xinchang structural belt is deeply buried and is mainly in the B stage of middle diagenesis. It belongs to ultra-low porosity, low permeability tight sandstone reservoir, strong heterogeneity, and the diagenesis has a very significant influence on reservoir, which is the key factor to control reservoir quality. The diagenetic facies are the direct manifestation of diagenesis in reservoir. In this paper, the second member of Xujiahe formation in the new field structural belt is taken as the object of study, based on core observation and sheet identification, combined with scanning electron microscopy (SEM), X-ray diffraction, cathodoluminescence, electron probe, etc. The petrological characteristics of reservoir were carried out by means of inclusion temperature measurement, carbon and oxygen isotope measurement, physical property analysis, etc. Study on diagenesis, types and characteristics of diagenetic facies. The diagenetic facies log interpretation model established by analyzing log response characteristics is an important means of diagenetic facies division in the study area, and is based on the conventional diagenetic facies classification method. Comprehensive study of logging data, well logging interpretation and production testing data, summed up the main diagenetic facies comprehensive discrimination criteria, and then through the single well and continuous well diagenetic facies division and correlation analysis, The spatial distribution characteristics of diagenetic facies in Xu2 member of the study area are defined. The main results obtained in this paper are as follows: 1. The main rock types of reservoir sandstone in the second member of Xujiahe formation are lithic sandstone. Lithic quartz sandstone and feldspar lithic sandstone. There are differences in cementation type and pore type. 2. The destructive diagenesis of sandstone in the second member of Xujiahe formation in the study area has compaction and cementation, constructive diagenesis has dissolution and fracture action, and the formation of sandstone in the second member of Xujiahe formation in the study area has been studied. Retention diagenesis includes chlorite ring cementation and some early carbonate and siliceous cementation .3.The second member of Xujiahe formation in the study area is in stage B of the middle diagenetic stage. Each submember has different diagenetic evolution history. Compaction is the first important factor to decrease reservoir porosity in Xujiahe formation. Carbonate cementation and siliceous cementation further densify sandstone in the study area. 4. The main diagenetic facies in the second member of Xujiahe formation are compacted facies, dissolution facies, calcareous cementation facies, siliceous cementation facies and chlorite cementation facies. Fracture facies and dissolution compaction facies, dissolution cementation facies and cementation compaction equal .5.Diagenetic facies in the second member of Xu2 are chlorite cementation facies, fracture facies and solution facies, which are favorable for the development of relatively high quality reservoir. The siliceous cementation facies and the dissolution compaction facies are also favorable diagenetic facies to some extent, while the calcareous cementation facies are the favorable diagenetic facies. Compaction facies and cement-compaction facies are unfavorable to reservoir development .6.The controlling factors of diagenetic facies are mainly sandstone petrology, sedimentary microfacies and fracture development degree.
【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(hào)】：P618.13

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本文編號(hào)：1611494