松辽盆地北部宾参1井白垩系烃源岩的认识和评价及其意义  

Recognition and evaluation of Cretaceous source rocks of Bin-can 1 well in the north of Songliao Basin and its implications

作　　者：康立明[1] 任战利[1] 崔军平[1] 崔营滨[1] 石耀东[2] 李彪[3] 石磊[4] 

机构地区：[1]西北大学大陆动力学国家重点实验室西北大学地质系,陕西西安710069 [2]长庆油田公司苏里格攻关项目组,陕西西安710021 [3]辽河油田勘探局西部市场开发部,陕西西安710021 [4]长庆油田公司第三采油厂,宁夏银川750001

出　　处：《地学前缘》2007年第6期257-266,共10页Earth Science Frontiers

基　　金：国家重点基础研究发展计划"973"项目(2003CB214605);长江学者和创新团队发展计划资助项目(IRT0559)

摘　　要：宾参1井是松辽盆地北部宾县断陷中的第一口参数井,钻遇白垩系地层,自下至上依次为沙河子组、营城组、登娄库组、泉头组和青山口组。在对宾参1井白垩系暗色泥岩进行一系列有机地球化学样品分析测试的基础上,从有机碳(TOC)、氯仿沥青"A"、有效碳(PC)、生烃潜量Pg(S1+S2)、热解峰温Tmax值、镜质体反射率(Ro)、烃源岩气相色谱特征、干酪根碳同位素特征、干酪根元素特征和源岩甾萜烷特征等方面着手,从有机质丰度、有机质类型和有机质成熟度三个角度认识该井白垩系烃源岩,并进行烃源岩的初步评价,认为:(1)青一段干酪根主要为Ⅱ1和Ⅱ2型,其中、下部已进入生油门限,属于非—差烃源岩,个别深度段为较好烃源岩,其上部及青二、三段处于未成熟阶段;(2)泉头组和登娄库组干酪根主要为Ⅲ型,已进入成熟生油阶段,前者属于非—差烃源岩,后者属于差烃源岩;(3)营城组和沙河子组干酪根主要为Ⅲ型,有些层段为Ⅱ2型,处于高成熟—过成熟阶段,以生气为主。对该井白垩系烃源岩的认识和初步评价为勘探程度极低的宾县凹陷含油气前景的评价预测和石油地质研究奠定了基础,具有现实意义和重要的理论意义。Bin-can # 1 well is the first parametric borehole in Binxian Fault Depression, in the north of Songliao Basin. Cretaceous rocks, from base to top, can be divided into the following groups： Shahezi, Yingcheng, Denglouku, Quantou, and Qingshankou, in the Binxian Fault Depression. Samples of Cretaceous dark claystone from the Bin-can # 1 well were analyzed and tested for organic geochemistry. The analyses included the determination of organic carbon, chloroform bitumen ＂A＂, pyrolisis, vitrinite reflectance （R0）, gas chromatography, carbon isotopic determinations from kerogen, and steroid terpane characterization. We recognized and evaluated Cretaceous source rocks on the basis of organic material abundances, maturity and type of source rocks. Results of this research show that （1）for Qing-1 section, kerogen is mainly of type Ⅱ ; and type Ⅱ 2, the middle part and lower part of the section have already entered oil threshold and belong to good source rock, while a few sections belong to better source rock, and the upper part of the section and Qing-2, 3 sections are immature; that （2）for Quantou group and Denglouku group, kerogen is of type Ⅲ, it has entered mature stage and the former belongs to non-source rock and bad source rock, the latter belongs to bad source rock; that （3） for Yingcheng group and Shahezi group, kerogen is mainly of type Ⅲ, for some sections are of type Ⅱ2, it is in a high-overmature stage and its source rock mainly generates gas. Recognition and initial evaluation of Cretaceous source rocks of Bin-can # 1 well can provide important bases for the estimation of hydrocarbon foreground and for research on oil geology in the Binxian Fault Depression.

关 键 词：宾参1井 白垩系 烃源岩 认识 评价 

分 类 号：TE122.113[石油与天然气工程—油气勘探]