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引用本文:高阳,刘文峰,于兴河,杨新涛. 准噶尔西北缘红山嘴地区克上组辫状河三角洲沉积-储层耦合关系与综合定量评价[J]. 中国地质, 2020, 47(4): 971-984.
GAO Yang,LIU Wenfeng,YU Xinghe,YANG Xintao. Coupling relationship of sedimentation-reservoir and comprehensive quantitative evaluation of braided river delta facies in Upper Karamay Formation, Hongshanzui area, northwestern margin of Junggar Basin[J]. Geology in China, 2020, 47(4): 971-984(in Chinese with English abstract).
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准噶尔西北缘红山嘴地区克上组辫状河三角洲沉积-储层耦合关系与综合定量评价
高阳1,2, 刘文峰3, 于兴河2, 杨新涛3
1.北京阳光杰科科技股份有限公司, 北京 100080;2.中国地质大学(北京)能源学院, 北京 100083;3.中国石油新疆油田分公司采油一厂, 新疆 克拉玛依 834000
摘要:
综合岩心、薄片、分析测试资料厘定辫状河三角洲不同相带储层特征及控制因素,选取孔隙度、含砂率、优势砂厚、优势砂岩分层系数及杂基含量作为评价参数,基于灰色关联法确定权重、拐点法确定分类阈值对储层进行综合定量评价。结果表明辫状河三角洲下平原地区由于储层物性好且优势砂岩(粗砂岩)占比高而Ⅰ类储层发育;三角洲上平原地区砂体发育但以砾岩沉积为主,杂基含量高而储层质量差,多为Ⅱ类储层;三角洲前缘地区正韵律特征显著,中、粗砂岩储层质量要优于细砂岩,但优势砂岩发育规模有限,因此多以Ⅱ类、Ⅲ类储层为主。该成果可为复杂砂砾岩储层的定量评价提供借鉴。
关键词:  辫状河三角洲  沉积作用  储层评价  克上组  红山嘴地区  准噶尔
DOI:10.12029/gc20200405
分类号:TE111.3
基金项目:国家自然科学基金项目(41472091)资助。
Coupling relationship of sedimentation-reservoir and comprehensive quantitative evaluation of braided river delta facies in Upper Karamay Formation, Hongshanzui area, northwestern margin of Junggar Basin
GAO Yang1,2, LIU Wenfeng3, YU Xinghe2, YANG Xintao3
1.Beijing Sunshine Geo-Tech Co., Ltd., Beijing 100083, China;2.School of Energy Resources, China University of Geosciences, Beijing 100083, China;3.No.1 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay 834000, Xinjiang, China
Abstract:
Core observation, thin section identification and data test were applied to analyzing the characteristics and quality-controlling factors of reservoirs in braided river delta. 5 parameters of porosity, ratio of sandbody, effective sandbody thickness, stratification coefficient of effective sandbody and matix content were chosen to evaluate the reservoir quantitatively, and gray correlation method was used to determine the weight coefficient and make critical point analysis to confirm the threshold value of various reservoirs. The results show that the lower delta plain is mainly classified as TypeⅠreservoir due to its good reservoir physical property and well-development of effective sandbody, while, in the upper delta plain, conglomerates of high matix content and poor physical property are assigned to typeⅡreservoir. The reservoir quality in delta front varies as its remarkable grain rhythm, with good quality in medium and coarse sandstone and poor quality in fine sandstone. And a limited development scale of the effective sandbody causes the delta front to be more likely recognized as TypeⅡand type Ⅲ reservoir. The results can provide reference for the quantitative evaluation of complex conglomerate reservoirs.
Key words:  braided river delta  sedimentation  reservoir evaluation  Upper Karamay Formation  Hongshanzui area  Junggar