【摘要】：由于長期開發(fā)而導(dǎo)致文135塊的油水關(guān)系復(fù)雜,嚴(yán)重影響了進(jìn)一步的調(diào)整挖潛。本論文運(yùn)用層序地層學(xué)、構(gòu)造地質(zhì)學(xué)、沉積學(xué)和石油地質(zhì)學(xué)作為理論指導(dǎo),通過地質(zhì)建模軟件petrel,運(yùn)用相控隨機(jī)建模技術(shù)等多種新理論、新方法和新技術(shù),建立反映油藏實際地質(zhì)現(xiàn)狀的精細(xì)地質(zhì)模型,開展數(shù)值模擬研究進(jìn)行開發(fā)動態(tài)分析,實現(xiàn)剩余油分布模擬,為提高文135塊的開發(fā)效率提供堅實的理論依據(jù)。以旋回-厚度法為主,等高程法為輔,在前期砂層組劃分對比的基礎(chǔ)上,對沙二下4砂組~沙三上3砂組展開了地層精細(xì)劃分對比,共劃分為8砂組、48個小層,建立出精細(xì)地層框架,為高精度地質(zhì)建模奠定了基礎(chǔ)。依據(jù)鉆井資料、地震解釋成果識別的斷點(diǎn)數(shù)據(jù),結(jié)合小層劃分對比數(shù)據(jù)完成了斷層模型和層面模型,實現(xiàn)構(gòu)造模型的建立。基于取芯井沉積相分析和測井相分析,確立了全區(qū)109口未取芯井的沉積微相。構(gòu)成本區(qū)油氣儲層最主要的砂體微相是水下分流河道、河道側(cè)翼和席狀砂。應(yīng)用各小層砂巖厚度圖和砂巖百分含量圖確定了各主力砂層的分布特征,沙二下7砂組~沙三上1砂組砂體整體發(fā)育較差,其他砂組河道砂體連片性和繼承性較好。在以上研究基礎(chǔ)上,通過井點(diǎn)數(shù)據(jù)約束,采用隨機(jī)模擬方法建立了沉積相模型。結(jié)合小層砂體數(shù)據(jù)、油水層測井解釋資料、孔滲數(shù)據(jù),采用相控建模方法建立了沙二下4砂組至沙三上3砂組幾何模型、砂體模型、油層模型、孔隙度及滲透率模型,運(yùn)用截斷取值方法建立含油飽和度和凈毛比模型。應(yīng)用Eclipse 2006數(shù)值模擬技術(shù)對生產(chǎn)歷史進(jìn)行擬合,定量計算了剩余油飽和度。并與動態(tài)分析相結(jié)合分析了剩余油分布規(guī)律,研究區(qū)僅有3個砂組剩余油較為豐富,斷層邊緣型和井間型進(jìn)一步調(diào)整挖潛難度大,土豆?fàn)畹蜐B儲層多,產(chǎn)油率低,受沉積微相、構(gòu)造特征及布井方式影響,主要分布在斷層邊緣和構(gòu)造高部位。
[Abstract]:Because of long-term development, the oil-water relationship of Wen135 block is complicated, which seriously affects the further adjustment and tapping potential. In this paper, sequence stratigraphy, tectonic geology, sedimentology and petroleum geology are used as the theoretical guidance, and various new theories, methods and techniques are used in the geological modeling software petrel,. The fine geological model reflecting the actual geological situation of the reservoir is established, the development dynamic analysis is carried out through numerical simulation, and the residual oil distribution simulation is realized, which provides a solid theoretical basis for improving the development efficiency of Wen135 block. The cyclic-thickness method was used as the main method, and the isometric method was used as the auxiliary method. On the basis of the early sand formation division and correlation, the stratigraphic fine division and correlation were carried out for the sand formation from the 4th sand formation to the upper third sand formation, which were divided into 8 sand groups and 48 sub-layers. The fine stratigraphic framework is established, which lays a foundation for high precision geological modeling. Based on drilling data, fracture point data of seismic interpretation results and correlation data of substratum division, fault model and stratigraphic model are completed, and the structural model is established. The sedimentary microfacies of 109 uncored wells in the whole area were established on the basis of sedimentary facies analysis and logging facies analysis of coring wells. The main microfacies of sand body are subaqueous distributary channel, flanking channel and sheet sand. The distribution characteristics of the main sand beds are determined by using the sandstone thickness map and the sandstone percent content map. The sand bodies of the lower 7 sand formation to the upper 1 sand group of the third sand group are poor, while the other sand groups have good continuity and inheritance of the river channel sand bodies. On the basis of the above research, the sedimentary facies model is established by random simulation method through well point data constraint. Combined with small sand body data, oil and water reservoir log interpretation data, pore and permeability data, the geometric model, sand body model, oil reservoir model, porosity and permeability model of sand formation from 4 sand formation to 3 upper sand formation of sand formation are established by using phase control modeling method. The model of oil saturation and net gross ratio was established by truncation method. The production history was fitted with Eclipse 2006 numerical simulation technology, and the remaining oil saturation was calculated quantitatively. Combined with dynamic analysis, the remaining oil distribution law is analyzed. Only three sand groups in the study area are rich in residual oil, and it is difficult to further adjust the fault margin and cross-well type, with a large number of low permeability reservoirs, low oil production rate and sedimentary microfacies. The influence of structural characteristics and pattern of well arrangement is mainly distributed in the fault margin and the high part of the structure.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;TE327

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