准噶尔盆地乌尔禾—风南地区百口泉组储层有利成岩相

发布时间：2018-01-15 14:17

本文关键词：准噶尔盆地乌尔禾—风南地区百口泉组储层有利成岩相　出处：《东北石油大学学报》2017年05期 　论文类型：期刊论文

【摘要】：为明确准噶尔盆地乌尔禾—风南地区百口泉组成岩作用及成岩相,根据岩心分析化验数据,确定百口泉组储层物性特征;根据岩石薄片和扫描电镜观察结果,确定百口泉组成岩作用类型及强度;根据X线衍射结果,确定黏土矿物组分及体积分数;根据岩心薄片及其测井曲线特征,采用"物性加主控因素"分类方法,划分成岩相类型并建立各成岩相测井响应特征,确定成岩相分布规律,预测有利成岩相分布区。结果表明:百口泉组储层主要经历压实作用,碳酸盐、黏土矿物、黄铁矿、硅质胶结作用,以及长石、石英溶蚀作用。储层可划分为5种成岩相类型,即特低孔渗杂基充填相、中孔渗弱压实强溶蚀相、低孔渗强压实强溶蚀相、特低孔渗方解石胶结相和特低孔渗强压实相,其中中孔渗弱压实强溶蚀相和低孔渗强压实强溶蚀相为有利成岩相。中孔渗弱压实强溶蚀相主要分布于乌009—风4井区,低孔渗强压实强溶蚀相主要分布于乌2—风南7—夏75井区。该分析结果可为研究区优质储层预测提供地质依据。
[Abstract]:In order to clarify the diagenesis and diagenetic facies of Baikouquan in Wuerhe-Fengnan area of Junggar Basin, the physical characteristics of Baikouquan formation reservoir were determined according to the core analysis data. According to the results of thin rock slice and SEM, the type and strength of Baikouquan composition rock are determined. According to the results of X-ray diffraction, the mineral composition and volume fraction of clay are determined. According to the characteristics of core slice and logging curve, the classification method of "physical property plus main controlling factors" is used to classify diagenetic facies and establish the logging response characteristics of each diagenetic facies, and determine the distribution of diagenetic facies. The results show that the reservoirs of Baikouquan formation mainly undergo compaction, carbonate, clay minerals, pyrite, siliceous cementation and feldspar. Quartz dissolution. The reservoir can be divided into five diagenetic facies, that is, the filling facies of ultra-low porosity and permeability, the weak pressure dissolution facies of medium porosity and permeability, and the strong dissolution facies with low porosity and permeability. The cemented phase of ultra-low porosity and permeability calcite and the strong compressive phase of extra low porosity and permeability. The weakly compacted dissolution facies of mesopore and low porosity and permeability are favorable diagenetic facies, and the weak compacted dissolution facies of mesoporous permeability are mainly distributed in well Wu009-Air 4. The low porosity and permeability strongly compacted and strongly dissolved facies are mainly distributed in Wu2-Fengnan 7summer 75 well area. The analysis results can provide geological basis for the prediction of high quality reservoirs in the study area.
【作者单位】：中国石油大学(北京)油气资源与探测国家重点实验室;中国石油大学(北京)盆地与油藏研究中心;中国石油新疆油田分公司风城油田作业区;
【基金】：教育部高等学校博士学科点专项科研基金项目(20130007110002) 中国石油新疆油田分公司项目(C4-16047)
【分类号】：P618.13
【正文快照】： 0引言储集体物性特征受沉积环境与成岩作用共同影响[1-3],成岩相是在特定沉积、成岩环境下经历成岩演化阶段后的产物,直接反映储层特征[4-5]。成岩相研究可以评价有利成岩储集体,预测优质储层分布[6]。准噶尔盆地西北缘风城油田作业区是油气勘探的重点[7-9],乌尔禾—风南地区

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