塔里木盆地塔河地区志留系上倾尖灭圈闭油气成藏

英文篇名：Hydrocarbon accumulation in Silurian updip pinch out traps,Tahe region,Tarim Basin
中文刊名：石油实验地质
英文刊名：Petroleum Geology & Experiment
作者：郭倩 ; 蒲仁海 ; 杨林 ; 孙国峰 ; 朱李 ; 楚宪波
英文作者：Guo Qian1 ; Pu Renhai1 ; Yang Lin2 ; Sun Guofeng2 ; Zhu Li1 ; Chu Xianbo1(1.State Key Laboratory of Continental Dynamics ; Department of Geology ; Northwest University ; Xi'an ; Shaanxi 710069 ; China ; 2.Research Institute of Petroleum Exploration & Production ; SINOPEC Northwest Company ; Urumqi ; Xinjiang 830011 ; China)
中文关键词：油气圈闭 ; 志留系 ; 塔河油田 ; 塔里木盆地
英文关键词：oil-and-gas trap ; Silurian ; Tahe Oil Field ; Tarim Basin
出版日期：2011-04-28
机构：国家大陆动力学重点实验室西北大学地质学系;中国石化西北油田分公司研究院;
年：2011
期：02
出版单位：石油实验地质

摘要

塔河地区S112-2井于2005年在古生界碎屑岩中获得了高产油流,但由于其位于石炭系与志留系之间的不整合面附近,上下岩性接近,所以油层属于石炭系、东河砂岩还是志留系一直存有争议。该文通过对岩心、测井及地震资料综合研究,确认了S112-2井油藏的时代、构造与圈闭特征,认为该区志留系存在2种砂岩上倾尖灭圈闭:一种是舌状上倾尖灭圈闭,即砂体顶面为单斜,但尖灭线朝北上倾方向呈舌状突出;另一种是鼻凸上倾尖灭圈闭,即尖灭线平直,没有出现向北突出的舌头,但砂体顶面为一个鼻凸构造。后者是在该区发现的可能具有类似含油特征的一种新的圈闭类型。
High-yielding oil flow was found in Paleozoic clastic rocks in Well S112-2 of Tahe region in 2005.The oil flow is on the unconformity interface between Carboniferous and Silurian;hence the origin still remains discussion.Based on core,logging and seismic data,the date,tectonic and trap features of the Well S112-2 reservoir were concluded.2 types of sandstone updip pinch out trap exist in Silurian in the region: a) tongue-shape ones,with monocline at the top of sandbody and pinchout line leading to the north;b) nose-shape ones,with nose-shape structure at the top of sandbody and straight pinchout line.The nose-shape ones are new trap types which may have similar oil-bearing features in the region.

引文

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