岩相古地理研究可作为页岩气地质调查之指南
A study of lithofacies-palaeogeography as a guide to geological survey of shale gas
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摘要: 得益于水平井和压裂技术的发展,页岩气已成为中国油气勘探开发的热点。沉积环境决定了有机质的含量、类型、矿物组成和含量、厚度、埋深等页岩气基本地质要素的特征。在开展区域沉积相研究的基础上,通过岩相古地理编图方法,可以明确烃源岩有利相带的时空分布,从而为页岩气勘探提供基础和方向。以四川盆地南部及邻区志留系龙马溪组为例,通过详细的沉积相及岩相古地理研究,确定了烃源岩的有利相带和空间展布特征。在岩相古地理图的基础上,叠加矿物组成、有机碳含量、成熟度、厚度等页岩气评价参数,预测了四川盆地南部及邻区志留系龙马溪组页岩气远景区和有利区。页岩气地质调查的根本目标是寻找页岩气的远景区和有利区,为页岩气勘探开发提供科学依据。因此,岩相古地理研究与编图可作为基本方法及关键的技术,为页岩气的地质调查工作提供指南。Abstract: Benefited from the development of horizontal well and the fracturing technology, shale gas has become a hot field in oil and gas exploration and development in China. Sedimentary environment determines the characteristics of basic geology elements of shale gas, such as the organic carbon content and type, mineral composition and content, thickness and the buried depth of hydrocar-bon source rocks. On the basis of the study of the regional sedimentary facies, according to the litheofacies palaeogeographic map-ping, it can explicit the spatio-temporal distribution of favorable facies belt of the hydrocarbon source rocks, which can provide the basic direction of the shale gas exploration. A case study of shale gas geological survey work on Longmaxi Formation in Southern of Sichuan Basin and its periphery was carried out, it can confirm favorable facies belt and the characters of the roomage distribution of hydrocarbon source rocks. Based on the litheofacies palaeogeographic, through superimpose the composition of the mineral, organic carbon content, maturity and the thickness, which are the evaluation parameters of shale gas, it can forecast the prospects and favor-able area of shale gas on Longmaxi Formation in Southern of Sichuan Basin and its periphery. The fundamental target of geological survey work about shale gas is to find the prospects and favorable area, which can provide scientific basis for shale gas exploration and development. As a result, the study of lithofacies palaeogeography can be a guide for geology survey of shale gas.
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Key words:
- shale gas /
- geology survey /
- lithofacies-palaeogeography /
- sedimentary facies /
- guide
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[1] 徐国盛,徐志星,段亮,等.页岩气研究现状及发展趋势[J]. 成都理工大学学报(自然科学版),2011,38(6):603-610.
[2] 邹才能,张国生,杨智,等.非常规油气概念、特征、潜力及技术——兼论非常规油气地质学[J]. 石油勘探与开发,2013,40(4):385-399.
[3] 吴馨,任志勇,王勇,等.世界页岩气勘探开发现状[J]. 资源与产业, 2013,15(5):61-67.
[4] 李世臻,乔德武,冯志刚,等.世界页岩气勘探开发现状及对中国的启示[J]. 地质通报,2010,29(6):918-924.
[5] Curtis J B. Fractured shale-gas systems[J]. AAPG Bulletin, 2002, 86(11):1921-1938.
[6] 张金川,薛会,张德明,等.页岩气及其成藏机理[J]. 现代地质,2003, 17(4):466.
[7] 张金川,金之均,袁明生.页岩气成藏机理和分布[J]. 天然气工业, 2004,24(7):15-18.
[8] 张金川,聂海宽,徐波,等.四川盆地页岩气成藏地质条件[J]. 天然气工业,2008,28(2):151-156.
[9] 张金川,徐波,聂海宽,等.中国页岩气资源勘探潜力[J]. 天然气工业,2008,28(6):136-140.
[10] 蒋裕强,董大忠,漆麟,等.页岩气储层的基本特征及其评价[J]. 地质勘探,2010,30(10):7-12.
[11] 姜在兴.沉积学[M].北京:石油工业出版社,2003:133-141.
[12] 王成善,李祥辉.沉积盆地分析原理与方法[M]. 北京:高等教育出版社,2003:6-11.
[13] 牟传龙,许效松.华南地区早古生代沉积演化与油气地质条件[J]. 沉积与特提斯地质,2010,30(3):24-29.
[14] 牟传龙,周恳恳,梁薇,等.中上扬子地区早古生代烃源岩沉积环境与油气勘探[J]. 地质学报,2011,85(4):526-532.
[15] 付小东,秦建中,腾格尔.四川盆地东南部海相层系优质烃源层评价——以丁山1井为例[J]. 石油实验地质,2008,30(6):621-642.
[16] 李双建,肖开华,沃玉进,等.南方海相上奥陶统-下志留统优质烃源岩发育的控制因素[J]. 沉积学报,2008,26(5):872-880.
[17] Jarvie D M, Hill R J, Ruble T E, et al. Unconventional shale-gas systems:The Mississipian Barnett Shale of north central Texas as one model for thermogenic shale-gas assessment[J]. AAPG Bulletin, 2007, 91(4):475-499.
[18] 王世玉,刘树根,孙玮,等.黔中隆起北部上奥陶统-下志留统页岩特征[J]. 成都理工大学学报(自然科学版),2012,39(6):599-605.
[19] 王阳,陈洁,胡琳,等.沉积环境对页岩气储层的控制作用——以中下扬子区下寒武统筇竹寺组为例[J]. 煤炭学报,2013,38(5):845-850.
[20] 聂海宽,包景书,高波,等.四川盆地及其周缘下古生界页岩气保存条件研究[J]. 地学前缘, 2012,19(3):281-294.
[21] 白兆华,时保宏,左学敏.页岩气及其聚集机理研究[J]. 天然气与石油,2011,29(3):54-57.
[22] 谢家荣.古地理为探矿工作之指南[J]. 古地理学报,2001,3(4):1-9.
[23] 刘伟,许效松,余谦,等.中上扬子晚奥陶世赫南特期岩相古地理[J]. 成都理工大学学报(自然科学版),2012,39(1):32-39.
[24] 王秀平,牟传龙,葛祥英,等.川南及邻区龙马溪组黑色岩系矿物组分特征及评价[J]. 石油学报,2015,36(2):150-162.
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