【摘要】：論文以山東省棗莊-滕州地區(qū)石炭二疊系地層為研究對象,通過收集整理區(qū)區(qū)基礎地質資料,采用多種手段測試,全面分析研究區(qū)頁巖儲層的儲層特征,認識頁巖氣成藏過程并探討其地質控制因素,最后進行頁巖氣勘探開發(fā)潛在有利區(qū)預測,所取得的主要成果如下。在資料整理和室內實驗分析的基礎上,劃定太原組目的層段,總結研究區(qū)頁巖儲層發(fā)育規(guī)律。研究區(qū)太原目的層段平均厚度為52.72 m,橫向上向南東逐漸變薄趨勢,空間形態(tài)主要受到構造的控制。有機質類型以III型干酪根為主,頁巖有機組分平均含量為4.35%,有機質含量較高。成熟度北部較低,南部、東部較高。煤巖和泥巖的平均孔隙度為4.68%�？紫额愋鸵晕⑿】缀瓦^渡孔發(fā)育為主。泥巖滲透性較差,儲層滲透率受充填影響很大。泥巖含氣量0.76~0.92 m3/t,頁巖總含氣量與埋深關系不明顯。采用綜合分析和數值模擬方法,研究了本區(qū)頁巖氣成藏地質過程。石炭二疊系從開始沉積,連續(xù)沉降至最大埋深,古地溫達到100℃以上,早期以生物氣為主,后期則為熱成因氣,氣體緩慢聚集。之后表現為整體進入抬升剝蝕,埋深達到最淺,早期生成的氣體基本逸散。晚侏羅世處于快速下降沉積,地溫出現差異性變化,北部地溫正常,南部受區(qū)域巖漿熱變作用影響,溫度持續(xù)升高;滕北地區(qū)熱演化基本停止,而南部地區(qū)快速演化,生成了一定數量的熱成因氣。從早白堊世至今,區(qū)域性緩慢抬升,地溫下降,有機質成熟作用停止,前期聚集的氣體逐漸散失至今。頁巖氣成藏地質控制因素,主要包括物質基礎(有機地球化學特征和物性等)、構造運動、巖漿活動及水文地質條件等。古地理條件為本區(qū)準備了較為理想的烴源物質條件和儲層條件。構造作用帶來的不利是多方面的,包括有機質的成熟作用不足,頁巖儲層賦存構造環(huán)境以及頁巖氣保存環(huán)境不理想。最后,建立頁巖氣選區(qū)評價標準,優(yōu)選出滕東地區(qū)為潛在頁巖氣勘探開發(fā)潛在有利區(qū)。
[Abstract]:Taking the Carboniferous Permian strata in Zaozhuang-Tengzhou area of Shandong Province as the research object, the paper analyzes the reservoir characteristics of shale reservoir in the study area by collecting and sorting out the basic geological data of the area and using various means of testing. The process of shale gas reservoir formation and its geological control factors are discussed. Finally, the potential favorable areas for shale gas exploration and development are predicted. The main results obtained are as follows. On the basis of data collation and laboratory experimental analysis, the target interval of Taiyuan formation is delineated, and the development law of shale reservoir in the study area is summarized. The average thickness of the Taiyuan target layer is 52.72 m, and the horizontal trend is gradually thinning south to east, and the spatial morphology is mainly controlled by the structure. The type of organic matter is mainly III kerogen, the average content of organic component of shale is 4.35%, and the content of organic matter is high. The maturity is lower in the north, higher in the south and higher in the east. The average porosity of coal and mudstone is 4.68%. The pore types are mainly micropore and transition pore. Mudstone permeability is poor, reservoir permeability is greatly affected by filling. The shale gas content is 0.76 ~ 0.92 m ~ (3 / t), and the relationship between shale gas content and buried depth is not obvious. The geological process of shale gas reservoir formation in this area is studied by means of comprehensive analysis and numerical simulation. From the beginning of the Carboniferous Permian system to the maximum buried depth, the paleogeothermal temperature was over 100 鈩，

本文編號：2385267