THE PROTOTYPE BASIN OF CAMBRIAN ZHANGXIA PERIOD AND OIL—GAS EXPLORATION PROSPECT IN THE ORDOS BASIN
-
摘要: 中寒武统张夏组鲕粒灰(云)岩在鄂尔多斯具有一定规模分布,是值得探索的油气勘探领域之一。综合分析认为:张夏期盆地为隆坳相间格局,南北向展布的中央古隆起雏形起到了分隔鄂尔多斯西缘祁连海和南缘秦岭海的作用,盆地原型为克拉通台地型盆地。张夏组储层鲕粒结构类型复杂,主要成岩作用为白云岩化和埋藏溶蚀作用等;孔隙结构与储层物性分析表明为低孔、低渗储层,局部发育一些较好的储集岩。油气地质条件有利因素包括储集条件、储盖组合和构造背景,不利因素为寒武系烃源岩不发育。加强对寒武系的研究和勘探力度,争取油气勘探新突破是可能的。Abstract: The substantially distributed Middle Cambrian oolitic limestone and oolitic dolomite in Ordos Basin are potential targets for petroleum and gas explorations.The appearance of alternative pattern of depressions and uplifts of Zhangxia Stage,together with the north—south trending of central paleouplift actually played the role of separating the Qilian Sea on the west margin of Ordos Basin and the Qinling Sea on the south margin of Ordos Basin.The Zhangxia Formation is composed mainly of complex oolitic structures with dolomitization and burial erosion as major diagenetic processes.The Zhangxia Formation is predominately low porosity and low permeability carbonate reservoirs.The reservoir capacity,cap assemblage and tectonic setting are among those favorable conditions for the preservation of petroleum or gas while the poorly developed source rock for hydrocarbon in Cambrian was the disadvantage of further exploration.
-
Key words:
- reservoir /
- basin-prototype /
- oil and gas exploration /
- Zhangxia Formation /
- Cambrian /
- Ordos Basin
-
[1] 付金华,魏新善,任军峰,等.鄂尔多斯盆地天然气勘探形势与发展前景[J].石油学报,2006,27(6):1-13. [2] 杨华,付金华,魏新善.鄂尔多斯盆地天然气成藏特征[J].天然气工业,2005,25(4):4-9. [3] 杨华,席胜利,魏新善.鄂尔多斯多旋回叠合盆地演化与天然气富集[J].中国石油勘探,2006,(1):17-24. [4] 马永生.中国海相油气田勘探实例之六:四川盆地普光大气田的发现与勘探[J].海相油气地质,2006,11(2):35-40. [5] 长庆油田石油地质志编写组.长庆油田石油地质志[M].北京:石油工业出版社,1992. [6] 郭忠铭,张军,于忠平.鄂尔多斯地块油区构造演化特征[J].石油勘探与开发,1994,21(2):22-29. [7] 张进.陕甘宁地区古生代以来的构造及演化特征研究[D].北京:中国地震局地质研究所,2002. [8] 陕西省地质矿产局.陕西省区域地质志[M].北京:地质出版社,1989. [9] 冯增昭,陈继新,张吉森.鄂尔多斯地区早古生代岩相古地理[M].北京:地质出版社,1991. [10] 王英华,杨承运,张秀莲.鲕粒的结构变化与成岩作用性质和强度的关系[J].沉积学报,1983,1(2):73-83. [11] MAZZULLO S J,HARRIS P M.Mesogenetic dissolution:It's role in porosity development in carbonate reservoirs[J].AAPG Bulletin,1992,76(5):607-620. [12] DAVIES G R,SMITH L B JR.Structurally controlled hydrothermal dolomite reservoir facies:An overview[J].AAPG Bulletin,2006,90(11):1641-1690. [13] SMITH L B JR.Origin and reservoir characteristics of Upper Ordovician Trenton-Black River hydrothermal dolomite reservoirs in New York[J].AAPG Bulletin,2006,90(11):1691-1718. [14] 郝石生.对碳酸盐生油岩的有机质丰度及其演化特征的讨论[J].石油实验地质,1984,6(1):67-71. [15] 秦建中,刘宝泉,国建英,等.关于碳酸盐烃源岩的评价标准[J].石油实验地质,2004,26(3):281-286. [16] 秦建中,刘宝泉,郑伦举,等.海相碳酸盐岩排烃下限值研究[J].石油实验地质,2007,29(4):391-396. [17] 秦建中,腾格尔,付小东.海相优质烃源层评价与形成条件研究[J].石油实验地质,2009,31(4):366-378. [18] 郜建军,朱建辉,缪九军,等.鄂尔多斯盆地西南缘下古生界生烃条件研究[R].无锡:中国石化无锡石油地质研究所,2008. [19] 戴金星,刘德良,曹高社.华北陆块南部下寒武统海相泥质烃源岩的发现对天然气勘探的意义[J].地质论评,2003,49(3):322-330. [20] 金之钧,周雁.我国南方王村上寒武统大型古油藏的首次发现[J].天然气地球科学,2009,20(2):159-161. [21] 王强,张渠,腾格尔,等.黔东南地区寒武系固体沥青的油源分析[J].石油实验地质,2009,31(6):613-615. -
计量
- 文章访问数: 3219
- HTML全文浏览量: 80
- PDF下载量: 937
- 被引次数: 0
下载:
苏公网安备32021102000780号