塔里木盆地塔河油田奧陶系數(shù)字巖心圖像中生物擾動(dòng)的定量表征
[Abstract]:Bioturbation has an important influence on the reconstruction effect of "matrix reservoir" of Ordovician carbonate rocks in Tahe Oilfield, Tarim Basin. Taking the Ordovician core of Tahe Oilfield as the research object, the biological disturbance region in the digital image of the core is identified and quantitatively characterized by using the digital image analysis software package of biological disturbance provided by Adobe Wen Photoshop Wen CS6 software. The results show that: (1) among the methods provided by the digital image analysis software package, "similar pixel selection method" and "magic wand method" are the most effective methods for biological disturbance identification and quantitative characterization, but their application ranges are different; (2) the "similar pixel selection method" is suitable for the case where the biological disturbance degree is large, the individual body is relatively small and the dispersion is relatively high: when the boundary contrast between the biological disturbance filling and the surrounding rock matrix is larger, The application of "selecting similarity" has the best effect; However, when the contrast of the boundary between the biological disturbance filling and the surrounding rock matrix is small, the best recognition effect can be obtained by using the "color range" operation, which can only be performed once. (3) the "magic wand method" has the unique advantage in identifying the biologic disturbance area with large shape and continuous distribution, and the filling color is different; This method can be used to improve the recognition degree of biologic disturbance area and surrounding rock matrix by repeated operation and adjustment of tolerance. In this study, the heterogeneity and distribution of carbonate "matrix reservoir" are explained from the point of view of biological genesis, and the characterization of biological disturbance properties is enhanced, and the geological theory of marine carbonate reservoir is enriched. It is of great significance to guide the prospective exploration and reserve calculation of this kind of reservoirs and to select reasonable development plans.
【作者單位】: 河南理工大學(xué)資源環(huán)境學(xué)院;河南省生物遺跡與成礦過程重點(diǎn)實(shí)驗(yàn)室;中國石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;中國石油塔里木油田分公司開發(fā)事業(yè)部;
【基金】:國家自然科學(xué)基金項(xiàng)目(批準(zhǔn)號(hào):41472104) 河南省高?萍紕(chuàng)新團(tuán)隊(duì)支持計(jì)劃(編號(hào):17IRTSTHN025)聯(lián)合資助~~
【分類號(hào)】:P618.13
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