玛东地区百口泉组地层新认识及油气勘探意义

doi:10.11885/j.issn.1674-5086.2018.10.21.01

西南石油大学学报(自然科学版) ›› 2020, Vol. 42 ›› Issue (2): 27-36.DOI: 10.11885/j.issn.1674-5086.2018.10.21.01

玛东地区百口泉组地层新认识及油气勘探意义

钱海涛¹, 尤新才¹, 魏云², 白雨¹, 吴俊¹

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. 中国石油新疆油田分公司实验检测研究院, 新疆克拉玛依 834000

收稿日期:2018-10-21 出版日期:2020-04-10 发布日期:2020-04-10
通讯作者: 钱海涛,E-mail:fcqht@petrochina.com.cn
作者简介:钱海涛,1986年生,男,汉族,陕西西安人,工程师,硕士,主要从事油气勘探综合研究工作。E-mail:fcqht@petrochina.com.cn;尤新才,1982年生,男,汉族,江苏泰兴人,高级工程师,主要从事石油地质勘探方面的研究工作。E-mail:youxc@petrochina.com.cn;魏云,1986年生,女,汉族,陕西汉中人,工程师,主要从事油气田开发方面的研究工作。E-mail:wy_xg@petrochina.com.cn;白雨,1987年生,男,汉族,黑龙江大庆人,工程师,主要从事地球物理勘探方面的研究工作。E-mail:fcby@petrochina.com.cn;吴俊,1987年生,男,苗族,湖北利川人,工程师,主要从事地质勘探、测井解释方面的研究。E-mail:dx_wj@petrochina.com.cn
基金资助:
国家科技重大专项（2017ZX05001-004）；中国石油天然气集团公司新疆重大科技专项（2017E-0401）

The New Understanding and Exploration Significance in Triassic Baikouquan Formation of Eastern Mahu Sag

QIAN Haitao¹, YOU Xincai¹, WEI Yun², BAI Yu¹, WU Jun¹

1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, CNPC, Karamay, Xinjiang 834000, China;
2. Research Institute of Experiment and Detection, Xinjiang Oilfield Company, CNPC, Karamay, Xinjiang 834000, China

Received:2018-10-21 Online:2020-04-10 Published:2020-04-10

摘要/Abstract

摘要： 准噶尔盆地玛东地区三叠系百口泉组二段下部油气显示活跃，已有多井获工业油流，但该套灰色砾岩段的层位和油气层归属一直存在争议。为进一步扩大百口泉组勘探成果，综合利用岩芯、测井及地震等资料，通过古地貌恢复、波形分类、地震属性等技术，重新厘定百口泉组地层，并对百一段古地貌、沉积相带及沉积模式进行了分析。研究结果表明，该区百口泉整体划分为4段，自下而上逐级超覆，呈退积叠置展布；受古地貌控制，百一段发育3大物源体系，在沟槽两翼平台区及凹陷中心扇三角洲前缘亚相广泛发育；百口泉组自下而上发育3套油层，横向分布稳定，向湖盆中心方向成藏层位越早，其中，百一段油藏与高部位DA13井区百二段油藏叠置连片分布，具备大面积含油特征。在上述新认识的基础上，指出百一段为研究区的重要含油层系，是玛湖凹陷百口泉组下一个寻找规模效益储量的重要领域。

关键词: 准噶尔盆地, 玛湖凹陷, 百口泉组, 地层划分, 沉积模式, 勘探领域

Abstract: The oil and gas in the lower part of the second member of the Triassic Baikouquan Formation in the eastern Mahu Sag, Junggar Basin keep showing activity, and the industrial oil flow has been obtained in many Wells. However, there has been a dispute over the horizon of the gray sand conglomerate and the oil and gas layer. In order to further expand the exploration results of the Baikouquan Formation, we utilize the core, logging and seismic data, through the Paleogeomorphic restoration, waveform classification, and seismic attributes, to reclassify Baikouquan Formation, and analyze the paleogeomorphology, sedimentary facies belt and sedimentary model of the first Member of Baikouquan Formation. The results show that the Baikouquan Formation in this area is divided into 4 sections, which are superimposed step by step from bottom to top, and distributed in retrogradation and overlay; controlled by paleogeomorphology, three major provenance systems developed in the first Member of Baikouquan Formation, the front subfacies of fan-delta developed widely in the platform area of two flanks of the trench and the center of the sag; The three sets of oil layers developed from the bottom to the top, the lateral distribution being stable, and the closer to the center of the lake basin, the earlier of the oil and gas reservoir is formed; The reservoir of the first member of Baikouquan Formation is overlapped with the second member of Baikouquan formation reservoir of the high position of DA13 well block, which is characteristics of large area oil content. On the basis of the above new understanding, we pointed out that the first member of Baikouquan Formation is an important oil-bearing series in the study area, which is an important exploration area to find reservoir with economic sacle in the Baikouquan Formation.

Key words: Junggar Basin, Mahu Sag, Baikouquan Formation, stratigraphic division, sedimentary model, exploration field

中图分类号:

TE122

钱海涛, 尤新才, 魏云, 白雨, 吴俊. 玛东地区百口泉组地层新认识及油气勘探意义[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 27-36.

QIAN Haitao, YOU Xincai, WEI Yun, BAI Yu, WU Jun. The New Understanding and Exploration Significance in Triassic Baikouquan Formation of Eastern Mahu Sag[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 27-36.

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玛东地区百口泉组地层新认识及油气勘探意义

The New Understanding and Exploration Significance in Triassic Baikouquan Formation of Eastern Mahu Sag

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