西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

准西车排子凸起石炭系岩性识别与储层特征

王坤1,张奉2,张翊2,王东坤3   

  1. 1. 中国石油勘探开发研究院,北京海淀100083
    2. 中国石化胜利油田分公司西部新区研究中心,山东东营257000
    3. 中国石油大学(华东)地球科学与技术学院,山东青岛266580
  • 出版日期:2014-08-01 发布日期:2014-08-01
  • 基金资助:

    国家重大科技专项(2011ZX05002–002)。

Identification of the Lithology of Carboniferous and Its Reservoir Characteristics in Chepaizi Uplift,Junggar Basin

Wang Kun1, Zhang Feng2, Zhang Yi2, Wang Dongkun3   

  1. 1. Research Institute of Petroleum Exploration and Development,PetroChina,Haidian,Beijing 100083,China
    2. Western Prospect Research Center,Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257000,China
    3. School of Geoscience,China University of Petroleum(Huadong),Qingdao,Shandong 266580,China
  • Online:2014-08-01 Published:2014-08-01

摘要:

准噶尔盆地车排子凸起石炭系发育沉积岩及火成岩,岩性复杂且勘探程度低,其储层发育特征尚不明确。利用测井岩性识别图版、成像测井、Fisher 判别分析3 种方法对岩性进行了识别,其中岩性识别图版能对火山熔岩类和沉积岩进行区分,成像测井能直观地区分不同岩性的发育特征,Fisher 判别分析法能综合多种测井信息并可完成自动识别。将测井解释剖面与最终的地质录井剖面进行对比,验证了测井识别岩性的可行性。该类方法可有效降低岩性识别所需时间和成本。对石炭系火成岩储层的储集空间、物性特征、分布特征及岩相发育特征进行了分析,结果表明:石炭系储层的主要储集空间为裂缝和孔洞,以火山角砾岩储集物性最好;研究区东部火山角砾岩及火山熔岩更为发育,储集性能较好;石炭系主要发育火山沉积相、喷溢相、爆发相,其中爆发相储集性能最好,喷溢相次之,火山沉积相最差。

关键词: 准噶尔盆地, 车排子凸起, 石炭系, 火成岩, 岩性识别, 储层特征

Abstract:

The develop sedimentary rocks and igneous rocks with complicated lithology in the Carboniferous in Chepaizi uplift,and the degree of exploration for Carboniferous is very low as well as the reservoir characters are undefined. By using logging identification plates,imaging logging and Fisher discriminant analysis,we identified the lithology. The identification plates can well distinguish lava and sedimentary rock. Imaging logging can distinguish the characteristics of different lithology. Fisher discriminant analysis can integrate various logging information and achieve auto identification. A comparison of the log interpretation section with the final well logging section suggests the feasibility of the identification method. This method can decrease the cost and time consumption for lithology identification. The reservoir space,physical characteristics,distribution characteristics and facies of Carboniferous igneous reservoir were analyzed by thin sections and magnetic data. The main Carboniferous reservoir space are cracks and holes and the volcanic breccia has best reservoir qualities. Volcanic breccia and lava are better developed in the eastern region than in the west,suggesting a better reservoir quality. Volcanic sedimentary facies,effusive facies and outbreak facies mainly develop in Carboniferous,among which outbreak facies reservoir has the best property,followed by effusive facies and the volcanic sedimentary facies is of the worst.

Key words: Junggar Basin, Chepaizi uplift, Carboniferous, igneous, lithology identification, reservoir property