涠洲油田涠三段沉积特征分析
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摘要
针对涠洲油田钻井资料少的问题,此文从前期研究成果和文献调研出发,确定涠洲油田涠三段物源区和主要沉积环境;其次,通过油田已钻4口井的最新井、震资料,涠三段划分出了辫状河三角洲平原、前缘两个亚相及相应的7个微相;最后,结合物源方向及波阻抗属性刻画出该区涠三段四套砂体的纵、横向展布特征,为下步地质研究奠定基础。
In view of the lack of well data in Weizhou oilfield, this paper starts from the previous results and literature investigations to determine the provenance area and main sedimentary environment in the 3 rd Member of Weizhou Formation. Secondly, through the latest well and seismic data of 4 wells drilled in oilfield area, two sub facies of braided river delta plain, braided river delta front and corresponding 7 sedimentary microfacies are divided. Finally, on the basis of the direction of the source, combined with the wave impedance attribute extraction, the vertical and horizontal distribution characteristics of the four sets in the 3 rd Member of Weizhou Formation can also be depicted. It will lay a foundation for further geological research.
In view of the lack of well data in Weizhou oilfield, this paper starts from the previous results and literature investigations to determine the provenance area and main sedimentary environment in the 3 rd Member of Weizhou Formation. Secondly, through the latest well and seismic data of 4 wells drilled in oilfield area, two sub facies of braided river delta plain, braided river delta front and corresponding 7 sedimentary microfacies are divided. Finally, on the basis of the direction of the source, combined with the wave impedance attribute extraction, the vertical and horizontal distribution characteristics of the four sets in the 3 rd Member of Weizhou Formation can also be depicted. It will lay a foundation for further geological research.
引文
[1]黄建军,张百涛,张萍,等.涠西油气突破区古地貌演变和源汇体系特征及下步勘探方向[J].海洋石油, 2016, 36(2):1-6.
[2]张文朝,王洪生,王元杰,等.二连盆地辫状河三角洲沉积特征及含油性[J].西安石油学报(自然科学版), 2000, 15(5):3-6.
[3]周洪瑞,王训练,刘智荣,等.准噶尔盆地南缘上三叠统黄山街组辫状河三角洲沉积[J].古地理学报, 2006, 8(2):187-198.
[4]于兴河,王德发,孙志华.湖泊辫状河三角洲岩相、层序特征及储层地质模型──内蒙古贷岱海湖现代三角洲沉积考察[J].沉积学报, 1995, 13(1):48-58.
[5]朱筱敏,邓秀芹,刘自亮,等.大型坳陷湖盆浅水辫状河三角洲沉积特征及模式:以鄂尔多斯盆地陇东地区延长组为例[J].地学前缘, 2013, 20(2):19-28.
[6]赵澄林,朱筱敏.沉积岩石学[M]. 3版.北京:石油工业出版社, 2001.
[7]张大智,纪友亮,韩春元,等.饶阳凹陷沙河街组辫状河三角洲沉积特征及储集性[J].中国地质, 2009, 36(2):344-354.
[8]邹才能,赵文智,张兴阳,等.大型敞流坳陷湖盆浅水三角洲与湖盆中心砂体的形成与分布[J].地质学报, 2008, 82(6):813-825.
[9]周丽清,吴胜和,熊琦华,等.吐哈盆地WM油田辫状河三角洲前缘砂体分析[J].沉积学报, 2000, 18(2):248-252.
[2]张文朝,王洪生,王元杰,等.二连盆地辫状河三角洲沉积特征及含油性[J].西安石油学报(自然科学版), 2000, 15(5):3-6.
[3]周洪瑞,王训练,刘智荣,等.准噶尔盆地南缘上三叠统黄山街组辫状河三角洲沉积[J].古地理学报, 2006, 8(2):187-198.
[4]于兴河,王德发,孙志华.湖泊辫状河三角洲岩相、层序特征及储层地质模型──内蒙古贷岱海湖现代三角洲沉积考察[J].沉积学报, 1995, 13(1):48-58.
[5]朱筱敏,邓秀芹,刘自亮,等.大型坳陷湖盆浅水辫状河三角洲沉积特征及模式:以鄂尔多斯盆地陇东地区延长组为例[J].地学前缘, 2013, 20(2):19-28.
[6]赵澄林,朱筱敏.沉积岩石学[M]. 3版.北京:石油工业出版社, 2001.
[7]张大智,纪友亮,韩春元,等.饶阳凹陷沙河街组辫状河三角洲沉积特征及储集性[J].中国地质, 2009, 36(2):344-354.
[8]邹才能,赵文智,张兴阳,等.大型敞流坳陷湖盆浅水三角洲与湖盆中心砂体的形成与分布[J].地质学报, 2008, 82(6):813-825.
[9]周丽清,吴胜和,熊琦华,等.吐哈盆地WM油田辫状河三角洲前缘砂体分析[J].沉积学报, 2000, 18(2):248-252.