成都理工大学学报（自然科学版）
成都理工大學學報（自然科學版）
성도리공대학학보（자연과학판）
JOURNAL OF CHENGDU UNIVERSITY OF TECHNOLOGY(SCIENCE & TECHNOLOGY EDITION)
2015年
3期
361-365
,共5页
五峰组-龙马溪组%有机质孔%差异性
五峰組-龍馬溪組%有機質孔%差異性
오봉조-룡마계조%유궤질공%차이성
Wufeng Formation-Longmaxi Formation%organic matter%pore%difference
探讨富有机质页岩有机质孔发育的差异性，为页岩气勘探开发提供理论依据。在1500倍和25000倍电镜下，对四川盆地南部上奥陶统五峰组－下志留统龙马溪组富有机质笔石页岩进行观察。结果表明，页岩中笔石、干酪根、固体沥青等有机显微组分丰富，有机质孔总体发育；但不同有机显微组分、同一有机显微组分的有机质孔发育均存在差异，个体较大的固体沥青有机质孔最为发育，干酪根有机质孔较为发育，笔石碎片有机质孔不发育。有机质孔是随着有机碳向烃类和碳质残渣转化而形成的，笔石富碳贫氢的特征导致其有机质孔不发育；不同母质来源的干酪根生烃潜力存在差异决定了其有机质孔发育存在差异；固体沥青有机质孔是在原油裂解过程中形成的，其发育程度可能主要与原油赋存的粒间孔隙空间大小相关。
探討富有機質頁巖有機質孔髮育的差異性，為頁巖氣勘探開髮提供理論依據。在1500倍和25000倍電鏡下，對四川盆地南部上奧陶統五峰組－下誌留統龍馬溪組富有機質筆石頁巖進行觀察。結果錶明，頁巖中筆石、榦酪根、固體瀝青等有機顯微組分豐富，有機質孔總體髮育；但不同有機顯微組分、同一有機顯微組分的有機質孔髮育均存在差異，箇體較大的固體瀝青有機質孔最為髮育，榦酪根有機質孔較為髮育，筆石碎片有機質孔不髮育。有機質孔是隨著有機碳嚮烴類和碳質殘渣轉化而形成的，筆石富碳貧氫的特徵導緻其有機質孔不髮育；不同母質來源的榦酪根生烴潛力存在差異決定瞭其有機質孔髮育存在差異；固體瀝青有機質孔是在原油裂解過程中形成的，其髮育程度可能主要與原油賦存的粒間孔隙空間大小相關。
탐토부유궤질혈암유궤질공발육적차이성，위혈암기감탐개발제공이론의거。재1500배화25000배전경하，대사천분지남부상오도통오봉조－하지류통룡마계조부유궤질필석혈암진행관찰。결과표명，혈암중필석、간락근、고체력청등유궤현미조분봉부，유궤질공총체발육；단불동유궤현미조분、동일유궤현미조분적유궤질공발육균존재차이，개체교대적고체력청유궤질공최위발육，간락근유궤질공교위발육，필석쇄편유궤질공불발육。유궤질공시수착유궤탄향경류화탄질잔사전화이형성적，필석부탄빈경적특정도치기유궤질공불발육；불동모질래원적간락근생경잠력존재차이결정료기유궤질공발육존재차이；고체력청유궤질공시재원유렬해과정중형성적，기발육정도가능주요여원유부존적립간공극공간대소상관。
The paper discusses the difference of organic pores developing in the organic-rich shales and provides a theoretical basis for exploration and development of shale gas.By SEM with 1 500 times and 25 000 times,the organic graptolite shales of Wufeng Formation-Longmaxi Formation in Sichuan Basin are observed.The results show that the organic macerals such as graptolites,kerogens and solid bitumens are abundant and the organic pores develop well.The development of the organic pores in different organic macerals or in the same organic maceral exits differences.The organic pores in the larger individual solid bitumens develop best,that in kerogens develop better and that in graptolites do not develop. The organic pores are formed as organic carbon transforms to hydrocarbons or carbonaceous residues.The features of rich carbon and poor hydrogen in graptolites lead to organic pores to develop poor.The kerogens with different parent matter have different hydrocarbon-generating potentials and thus decide the difference of development of organic pores.The pores in solid bitumen organic matter are formed during the course of crude oil cracking and their development is related with the spaces of the intergranular pores existing in the crude oil.
