天然气地球科学

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二连盆地阿南凹陷致密油形成条件与成藏特征

吕维宁1,宋涛1,李欣1,闫伟鹏1,王建2,钟雪梅2   

  1. 1.中国石油勘探开发研究院,北京 100083;
    2.中国石油华北油田分公司勘探开发研究院,河北 任丘 062552
  • 收稿日期:2016-04-01 修回日期:2016-06-05 出版日期:2016-09-10 发布日期:2016-09-10
  • 作者简介:吕维宁(1986-),男,黑龙江牡丹江人,工程师,硕士,主要从事油气地质综合研究、常规与非常规油气资源评价研究. E-mail:lwn333@petrochina.com.cn.
  • 基金资助:
    中国石油股份公司重大科技专项“中国石油第四次油气资源评价”(编号:2013E-0502)资助.

Accumulation features and formation conditions of tight oil reservoir in A’nan Sag,Erlian Basin,China

Lü Wei-ning1,Song Tao1,Li Xin1,Yan Wei-peng1,Wang Jian2,Zhong Xue-mei2   

  1. 1.PetroChina Research Institute of Petroleum Exploration and Development,Beijing 100083,China;
    2.Exploration and Development Research institute of Huabei Oilfield Company,PetroChina,Renqiu 062552,China
  • Received:2016-04-01 Revised:2016-06-05 Online:2016-09-10 Published:2016-09-10

摘要: 利用岩心、钻井地质及地球化学分析等资料,综合研究阿南凹陷特殊岩性段致密油地质特征及形成条件,并进行有利区分布预测。阿南凹陷致密油主要分布于下白垩统阿四段和腾一下亚段特殊岩性段,表现为岩性复杂、电阻率曲线呈刺刀状、地震响应明显等特征。特殊岩性段厚度大、分布范围广,广泛发育以泥岩、白云质泥岩和纹层状灰质泥岩为主的优质烃源岩。白云岩类和砂岩类致密储层与优质烃源岩紧密接触,致密储层有效厚度大、孔渗条件相对较好,具备形成致密油的有利条件。通过综合分析,预测有利区主要位于靠近洼槽中心的斜坡低部位。

关键词: 阿南凹陷, 致密油, 特殊岩性段, 有利区, 二连盆地

Abstract: Accumulation features and formation conditions of the special lithological section in A’nan Sag,Erlian Basin,China,in which tight oil reservoir exists,were analyzed and evaluated by using core,seismic data,geological drilling and geochemical data.Tight reservoirs,developing in A’nan Sag,in which the special lithological section developed at the lower of A4 and Teng 1 members,had complex lithology,resistivity curve liking bayonet and the obvious seismic response.The special lithological section had a large distribution area and large thickness,in which the high quality source rocks exist,mainly in dolomite mudstone and layered calcareous mudstone.Tight reservoirs composed of dolomite and sandstone,contacting with high quality source rocks,have favorable conditions for the formation of tight oil because of the effective thickness and the relatively good hole infiltration condition.According to the comprehensive analysis,the favorable area is mainly located in the lower part of the slope near the center of the depression trough.

Key words: A’nan Sag, Tight oil, Special lithological section, Favorable area, Erlian Basin

中图分类号: 

  • TE122.3

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