[1]苏航,吴丰,孟凡,等.准噶尔盆地南缘紫泥泉子组气层低阻成因[J].新疆石油地质,2019,(06):680.[doi:10.7657/XJPG20190607]
 SU Hang,WU Feng,MENG Fan,et al.Genesis of Low Resistivity of Gas Zone in Ziniquanzi Formation of the Southern Margin of Junggar Basin[J].Xinjiang Petroleum Geology,2019,(06):680.[doi:10.7657/XJPG20190607]
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准噶尔盆地南缘紫泥泉子组气层低阻成因()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2019年06期
页码:
680
栏目:
出版日期:
2019-12-01

文章信息/Info

Title:
Genesis of Low Resistivity of Gas Zone in Ziniquanzi Formation of the Southern Margin of Junggar Basin
文章编号:
1001-3873(2019)06-0680-07
作者:
苏航1吴丰2孟凡3王彬1姚聪2习研平2
(1.中国石油 新疆油田分公司 勘探开发研究院,新疆 克拉玛依 834000;2.西南石油大学 地球科学与技术学院,成都 610500;3.南阳华润燃气有限公司,河南 南阳 473000)
Author(s):
SU Hang1 WU Feng2 MENG Fan3 WANG Bin1 YAO Cong2 XI Yanping2
(1.Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China; 2.School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 3.Nanyang China Resource Gas Limited Company, Nanyang, Henan 473000, China)
关键词:
准噶尔盆地紫泥泉子组低阻气层孔隙结构束缚水饱和度阳离子交换量
Keywords:
Junggar basin Ziniquanzi formation low resistivity gas zone pore structure irreducible water saturation cation exchange capacity
分类号:
TE122.23
DOI:
10.7657/XJPG20190607
文献标志码:
A
摘要:
准噶尔盆地南缘古近系紫泥泉子组气层泥质含量高,气层与水层之间的电阻率差异较小,属于典型的低阻气层,但其成因机理尚不够明确,流体性质判别较为困难。以玛河气田和呼图壁气田为例,利用孔渗、岩电、核磁、压汞、薄片、阳离子交换容量和X射线衍射全岩及黏土矿物分析等实验,结合地质和测井资料,对准噶尔盆地南缘古近系紫泥泉子组气层低阻成因进行了研究。结果表明,构造对气层电阻率的影响较小,三角洲前缘的沉积环境导致岩石颗粒粒度细、泥质含量高,因此,沉积环境是气层低阻的主要成因;岩石颗粒越细,泥质含量越高,则小孔隙越多,束缚水饱和度越高,岩石的导电性也越好,因此,高束缚水饱和度和黏土附加导电性是气层低阻的主要原因。
Abstract:
The gas zone of Paleogene Ziniquanzi formation in the southern margin of Junggar basin is a typical low-resistivity gas layer due to its high shale content and small differences in resistivity between gas layer and water layer. However, the genetic mechanism of the low-resistivity gas zone is not clear yet, which makes it difficult to distinguish the characteristics of the reservoir fluids. Based on the experimental results of porosity, permeability, rock resistivity, nuclear magnetic resonance, mercury injection, thin section, cation exchange capacity and X-ray diffraction analysis of mineral composition, and combining with the geological and well logging data, this paper takes Mahe gas field and Hutubi gas field as examples to analyze the genesis of the low resistivity of the gas zone in Paleogene Ziniquanzi formation in the southern margin of Junggar basin. The results show that the geological structure has little influence on the gas zone resistivity and the sedimentary environment of delta front results in fine grain size and high shale content of rocks; therefore, sedimentary environment is the main reason for the low resistivity of the gas layer; the finer the rock grain size and the higher the shale content are, the smaller pores will occur and the higher irreducible water saturation and the better the rock conductivity will be. Therefore, high irreducible water saturation and additional conductivity of clay are the main causes resulted in the low resistivity of the gas zone

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更新日期/Last Update: 2019-11-25