本文選題：威利斯頓盆地 + 巴肯組　； 參考：《新疆石油地質(zhì)》2016年06期

【摘要】：在分析油氣勘探相關(guān)資料的基礎(chǔ)上,結(jié)合薄片鑒定和有機(jī)地球化學(xué)資料,探討了威利斯頓盆地巴肯組和西墨西哥灣盆地鷹灘組泥頁(yè)巖地質(zhì)、地球化學(xué)特征,并剖析了巴肯組和鷹灘組油氣成藏差異的原因。巴肯組和鷹灘組巖石組合的不同導(dǎo)致二者油氣成藏方式存在差異,巴肯組以源外成藏為主,鷹灘組以源內(nèi)成藏為主。巴肯組泥頁(yè)巖生烴產(chǎn)生的超壓大于鷹灘組,具有更大的排烴動(dòng)力,有利于油氣從泥頁(yè)巖中排出,從而導(dǎo)致巴肯組泥頁(yè)巖中滯留的油氣較少,而鷹灘組泥頁(yè)巖生成的油氣大部分滯留在泥頁(yè)巖內(nèi)部。巴肯組中段物性優(yōu)于上段和下段,而且連通孔隙更發(fā)育,孔喉更大,為油氣主要賦存的層段;而鷹灘組泥頁(yè)巖和灰?guī)r中孔隙都較發(fā)育,這2類儲(chǔ)集層都對(duì)烴類的儲(chǔ)存有重要的貢獻(xiàn)。巴肯組致密油藏和鷹灘組致密油藏均為連續(xù)型或準(zhǔn)連續(xù)型油藏,巴肯組致密油藏主要以縱向運(yùn)移為主,巴肯組中段致密儲(chǔ)集層形成了大面積連續(xù)分布的致密油區(qū),而鷹灘組致密油藏同時(shí)存在縱向運(yùn)移和側(cè)向運(yùn)移,形成了縱向上泥頁(yè)巖油藏和致密灰?guī)r油藏互相疊置,具有源儲(chǔ)一體、疊加連片的特點(diǎn)。
[Abstract]:On the basis of analyzing the related data of oil and gas exploration, combined with thin slice identification and organic geochemical data, the shale geology and geochemistry characteristics of the Bakon formation in the Williston Basin and the Yingtan formation in the western Gulf of Mexico basin are discussed. The reasons of oil and gas accumulation difference between Baken formation and Yingtan formation are analyzed. The difference of rock assemblages between the Baken formation and the Yingtan formation leads to the difference of hydrocarbon accumulation patterns between the two formations. The Bain formation is mainly formed outside the source and the Yingtan formation is mainly formed within the source. The hydrocarbon-generating pressure of the shale in the Baken formation is larger than that in the Yingtan formation, which has a greater hydrocarbon expulsion power, which is beneficial to the expulsion of oil and gas from the shale, resulting in less oil and gas remaining in the shale of the Baken formation. However, most of the oil and gas generated by shale of Yingtan formation remain inside the shale. The physical properties of the middle member of the Baken formation are superior to those of the upper and lower segments, and the connected pores are more developed, the pore throat is larger, and the reservoir is the main reservoir of oil and gas, while the pores in the shale and limestone of the Yingtan formation are more developed. Both types of reservoirs contribute significantly to hydrocarbon storage. The dense reservoirs of Baken formation and Yingtan formation are both continuous or quasi-continuous reservoirs, and the dense reservoirs of Baken formation are mainly vertical migration. The dense reservoirs in the middle part of the Baken formation form a large area of continuous dense oil areas. However, both vertical and lateral migration exist in the dense reservoir of Yingtan formation, which results in the superposition of the shale reservoir and the dense limestone reservoir, which has the characteristics of source storage and stacking and lamination.
【作者單位】： 中國(guó)石油大學(xué)非常規(guī)油氣與新能源研究院;中國(guó)石油大學(xué)地球科學(xué)與技術(shù)學(xué)院;中國(guó)石油集團(tuán)測(cè)井有限公司長(zhǎng)慶事業(yè)部;
【基金】：國(guó)家自然科學(xué)基金(41402122) 博士后科學(xué)基金(2014M561980)
【分類號(hào)】：P618.13

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