【摘要】：以黃驊坳陷中區(qū)和北區(qū)古近系沙河街組湖相富有機(jī)質(zhì)泥頁巖為重點(diǎn)研究對象,在大量樣品實(shí)驗(yàn)測試數(shù)據(jù)深入分析與鏡下觀察的基礎(chǔ)上,從頁巖的發(fā)育特征、有機(jī)質(zhì)豐度、有機(jī)質(zhì)類型、熱演化程度及儲集性能等方面出發(fā),明確了研究區(qū)沙河街組陸相頁巖氣形成條件及資源潛力。研究區(qū)沙河街組有效生烴泥頁巖的累積厚度大(大于1 000 m),有機(jī)質(zhì)豐度高(大于1.0%),有機(jī)質(zhì)類型適中(以Ⅱ_1及Ⅱ_2型為主),熱演化程度以成熟—高熟為主,儲集性能較好,具備良好的頁巖氣成藏條件。通過與美國主要產(chǎn)氣頁巖、中國陸相和海相頁巖層段的主要特征參數(shù)指標(biāo)相比較,建立了以富有機(jī)質(zhì)泥頁巖的厚度、有機(jī)碳含量、鏡質(zhì)組反射率、埋深及地層壓力等參數(shù)作為頁巖氣有利區(qū)的評價標(biāo)準(zhǔn),初步優(yōu)選歧口凹陷西南部及張巨河一帶為頁巖氣勘探的有利區(qū),且以沙三段為頁巖氣富集的最有利層段。初步估算黃驊坳陷中區(qū)和北區(qū)沙河街組陸相泥頁巖形成的頁巖氣總遠(yuǎn)景資源量約為0.46×10~(12)m~3,其中沙三段占73%,充分表明了黃驊坳陷中區(qū)和北區(qū)沙河街組陸相頁巖氣資源潛力較大。
[Abstract]:Taking the Huanghua depression central area and the northern Paleogene Shahejie formation lacustrine facies rich organic matter shale as the research object, based on the massive sample experimental test data thorough analysis and the microscopic observation, from the shale development characteristic, the organic matter abundance, Based on the types of organic matter, thermal evolution and reservoir properties, the formation conditions and resource potential of continental shale gas in Shahejie formation are determined. In the study area, the effective hydrocarbon generating shale of Shahejie formation has a large cumulative thickness (> 1 000 m), organic matter abundance (> 1.0%) and moderate organic matter type (鈪，

本文編號：2374501