【摘要】：環(huán)江地區(qū)位于鄂爾多斯盆地西部,是環(huán)江油田的主力開發(fā)區(qū)域。近年來隨著油田產(chǎn)能建設(shè)任務(wù)的加大和油田開發(fā)力度的增加,環(huán)江地區(qū)延長組長7儲層不斷鉆遇出油井點,顯示出良好的滾動開發(fā)潛力�；诖碎_展對環(huán)江地區(qū)長7致密砂巖油藏測井解釋研究,為下一步的勘探及開發(fā)建產(chǎn)工作打好堅實的基礎(chǔ)。本文以鄂爾多斯盆地環(huán)江地區(qū)延長組長7致密砂巖儲層為研究對象,利用錄井資料、巖心分析資料、測井資料,結(jié)合長7儲層沉積背景和地層特征,分析研究長7致密砂巖儲層的物性、非均質(zhì)性等儲層特征及其影響因素,通過“四性關(guān)系”研究,建立測井參數(shù)解釋模型,并對儲層進行測井次解釋和致密油層判識。具體取得以下認識:(1)環(huán)江地區(qū)延長組長7儲層主要發(fā)育三角洲前緣沉積相和深湖-半深湖沉積相,儲層粒度較細,以細砂巖、粉砂巖為主�？紫抖�、滲透率低,儲層物性差,常規(guī)測井精度和分辨力低,有效儲層識別難。(2)通過“四性關(guān)系”研究,確定油水層測井響應(yīng)特征,精確建立泥質(zhì)含量、孔隙度、滲透率、飽和度解釋模型,應(yīng)用經(jīng)驗統(tǒng)計法、產(chǎn)能分析法、孔飽關(guān)系法、最小流動孔喉半徑法,綜合分析確定儲層物性下限:孔隙度為6.0%,滲透率為0.03x10、^^。(3)根據(jù)長7致密油藏地層特征、成藏模式和試油資料,應(yīng)用儲層參數(shù)界限值法確定致密油層電性標(biāo)準,結(jié)合曲線形態(tài)特征法、TPI指數(shù)法、視電阻增大率法、微差分析法等多種定量和定性致密油層判識技術(shù),綜合分析對比,以提高解釋符合率,并通過試油結(jié)果進行驗證,取得較好的實際應(yīng)用效果。
[Abstract]:Huanjiang area, located in the west of Ordos Basin, is the main development area of Huanjiang Oilfield. In recent years, with the increase of productivity construction task and the increase of oilfield development, Yanchang No. 7 reservoir in Huanjiang area has been drilling and meeting oil well point, which shows good rolling development potential. Based on this, the logging interpretation of Chang 7 tight sandstone reservoir in Huanjiang area is carried out, which lays a solid foundation for the next exploration and development. This paper takes Yanchang 7 tight sandstone reservoir in Huanjiang area, Ordos Basin as the research object, using logging data, core analysis data and logging data, combined with the sedimentary background and stratigraphic characteristics of Chang 7 reservoir. The physical properties, heterogeneity and influencing factors of Chang 7 tight sandstone reservoir are analyzed and studied. Through the study of "four properties", a logging parameter interpretation model is established, and logging times interpretation and tight reservoir identification are carried out. The main results are as follows: (1) the reservoir of Yanchang Group 7 in Huanjiang area mainly developed delta front sedimentary facies and deep lacustry-semi-deep lake sedimentary facies with fine grain size mainly composed of fine sandstone and siltstone. Porosity, low permeability, poor physical properties of reservoir, low precision and resolution of conventional logging, difficult to identify effective reservoir. (2) through the study of "four-property relationship", the response characteristics of logging are determined, and the shale content, porosity and permeability are accurately established. The saturation interpretation model, the empirical statistics method, productivity analysis method, pore saturation relation method, minimum flow pore throat radius method, are used to determine the lower limit of reservoir physical properties: porosity is 6.0, permeability is 0.03x10, (3) according to the formation characteristics of Chang7 tight reservoir, The reservoir forming model and oil testing data are used to determine the electric property standard of dense reservoir by using the method of reservoir parameter limit value, combined with curve shape characteristic method, TPI index method, apparent resistance increase rate method, differential analysis method, and so on. Comprehensive analysis and contrast to improve the interpretation coincidence rate, and through the test results to verify, and obtain a better practical application effect.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P618.13;P631.81

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