本文關(guān)鍵詞： 有效介質(zhì)對(duì)稱導(dǎo)電理論 純砂巖 非阿爾奇規(guī)律 泥質(zhì)砂巖 并聯(lián)導(dǎo)電和串聯(lián)導(dǎo)電 理論和實(shí)驗(yàn)比較　出處：《地球物理學(xué)進(jìn)展》2016年04期 　論文類型：期刊論文

【摘要】：復(fù)雜泥質(zhì)砂巖儲(chǔ)層的飽和度評(píng)價(jià)一直是測(cè)井解釋領(lǐng)域亟待解決的難點(diǎn)和熱點(diǎn)問(wèn)題,基于并聯(lián)導(dǎo)電理論和阿爾奇公式建立的導(dǎo)電模型擴(kuò)展性有限,在一定程度上限制了該類模型擴(kuò)展描述孔隙結(jié)構(gòu)更復(fù)雜的高泥高鈣砂巖儲(chǔ)層的導(dǎo)電規(guī)律,而有效介質(zhì)對(duì)稱導(dǎo)電理論能很好地描述復(fù)雜泥質(zhì)砂巖儲(chǔ)層導(dǎo)電規(guī)律,具有很好的應(yīng)用前景,但仍需深入研究.首先針對(duì)純砂巖,使用有效介質(zhì)對(duì)稱導(dǎo)電理論建立純砂巖有效介質(zhì)對(duì)稱導(dǎo)電模型,理論分析與實(shí)驗(yàn)研究表明純砂巖有效介質(zhì)對(duì)稱導(dǎo)電模型優(yōu)于阿爾奇方程,不但可以描述純砂巖阿爾奇規(guī)律,而且可以描述純砂巖非阿爾奇規(guī)律,并且滿足當(dāng)孔隙度等于1時(shí)地層因素等于1,以及當(dāng)含水飽和度等于1時(shí)電阻增大系數(shù)等于1的物理約束,可更好地描述純砂巖導(dǎo)電規(guī)律.其次,針對(duì)分散泥質(zhì)砂巖,使用有效介質(zhì)對(duì)稱導(dǎo)電理論建立泥質(zhì)砂巖有效介質(zhì)對(duì)稱導(dǎo)電模型,理論分析與實(shí)驗(yàn)研究表明,泥質(zhì)砂巖有效介質(zhì)對(duì)稱導(dǎo)電模型優(yōu)于泥質(zhì)電阻率模型和雙電層模型,不需要采用經(jīng)驗(yàn)擬合就能完整地描述飽含水分散泥質(zhì)砂巖的電導(dǎo)率與地層水電導(dǎo)率之間曲線和直線關(guān)系,模型預(yù)測(cè)的粘土含量和粘土電導(dǎo)率變化對(duì)巖石導(dǎo)電規(guī)律的影響與理論認(rèn)識(shí)相符,可更好地描述分散泥質(zhì)砂巖導(dǎo)電規(guī)律.第三,針對(duì)兩組分混合介質(zhì),使用有效介質(zhì)對(duì)稱導(dǎo)電理論、并聯(lián)導(dǎo)電理論、串聯(lián)導(dǎo)電理論,分別建立了有效介質(zhì)對(duì)稱導(dǎo)電方程、并聯(lián)導(dǎo)電方程、串聯(lián)導(dǎo)電方程,理論比較表明有效介質(zhì)對(duì)稱導(dǎo)電理論與并聯(lián)導(dǎo)電理論和串聯(lián)導(dǎo)電理論均不等價(jià),即當(dāng)兩種組分混合介質(zhì)遵循并聯(lián)或串聯(lián)導(dǎo)電規(guī)律時(shí),混合介質(zhì)的導(dǎo)電規(guī)律不能用有效介質(zhì)對(duì)稱導(dǎo)電理論描述.有效介質(zhì)對(duì)稱導(dǎo)電理論能夠描述骨架和水以及粘土均為連續(xù)項(xiàng)的巖石導(dǎo)電規(guī)律.它通過(guò)引入滲濾指數(shù)和滲濾速率幾何參數(shù)來(lái)描述各種組份的連通性、表面的粗糙度、形狀、潤(rùn)濕性等對(duì)巖石導(dǎo)電性的影響,因此,有效介質(zhì)對(duì)稱導(dǎo)電理論的適用性更廣,可用于描述孔隙結(jié)構(gòu)更復(fù)雜的高泥高鈣砂巖儲(chǔ)層的導(dǎo)電規(guī)律.
[Abstract]:Saturation evaluation of complex shaly sandstone reservoir has been a difficult and hot problem to be solved in logging interpretation field. The expansion of conductive model based on parallel conduction theory and Archie formula is limited. To a certain extent, this kind of model is limited to describe the conductivity law of high shale and high calcium sandstone reservoir with more complex pore structure, and the effective medium symmetric conductive theory can well describe the conductivity law of complex shaly sandstone reservoir. It has a good application prospect, but it still needs further study. Firstly, the effective medium symmetric conductive model is established for pure sandstone by using the effective medium symmetric conductive theory. Theoretical analysis and experimental study show that the symmetric conductive model of effective medium in pure sandstone is superior to the Archie equation, which can not only describe the Archie law of pure sandstone, but also describe the non-Archie law of pure sandstone. In addition, when the porosity is equal to 1:00, the formation factor is equal to 1, and when the water saturation is equal to 1:00, the coefficient of resistance increase is equal to 1, the conductivity of pure sandstone can be better described. Secondly. For dispersed argillaceous sandstone, the effective medium symmetric conductive model is established by using the theory of effective medium symmetry conductivity. The theoretical analysis and experimental study show that the model is effective. The symmetric conductivity model of effective medium in argillaceous sandstone is superior to that of resistivity model and double electric layer model. The curve and linear relationship between conductivity and formation water conductivity of water-rich dispersed argillaceous sandstone can be described completely without using empirical fitting. The influence of clay content and clay conductivity change predicted by the model on rock conductivity is consistent with the theoretical understanding, which can better describe the conductivity law of dispersed shaly sandstone. Thirdly, for the mixed medium of two components. Using the effective medium symmetric conduction theory, the parallel conduction theory and the series conduction theory, the effective medium symmetric conduction equation, the parallel conduction equation and the series conduction equation are established respectively. The theoretical comparison shows that the effective medium symmetric conduction theory is not equivalent to the parallel conduction theory and the series conduction theory, that is, when the two kinds of mixed media follow the parallel or series conduction law. The conductive law of mixed medium can not be described by symmetric conductive theory of effective medium. The theory of symmetric conductivity of effective medium can describe the conductivity of rock with continuous terms of skeleton, water and clay. It can be described by introducing the percolation index and the. The geometric parameters of percolation rate are used to describe the connectivity of various components. The influence of surface roughness, shape and wettability on the conductivity of rock makes the theory of effective medium symmetric conduction more applicable. It can be used to describe the conductivity of high mud and high calcium sandstone reservoirs with more complex pore structure.
【作者單位】： 東北石油大學(xué)地球科學(xué)學(xué)院;非常規(guī)油氣成藏與開(kāi)發(fā)省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41274110)資助
【分類號(hào)】：P618.13;P631.3
【正文快照】： 1.東北石油大學(xué)地球科學(xué)學(xué)院,大慶1633182.非常規(guī)油氣成藏與開(kāi)發(fā)省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地,大慶1633181.College of Geo-science,Northeast Petroleum University,Heilongjiang Daqing 163318,China2.Accumulation and Development of Unconventional Oil and Gas,State

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