石油学报 ›› 2019, Vol. 40 ›› Issue (2): 240-256.DOI: 10.7623/syxb201902013

• 典型油气田 • 上一篇    下一篇

苏里格气田成藏条件及勘探开发关键技术

付金华1,2, 范立勇2,3, 刘新社2,4, 黄道军2,3   

  1. 1. 中国石油长庆油田公司 陕西西安 710018;
    2. 低渗透油气田勘探开发国家工程实验室 陕西西安 710018;
    3. 中国石油长庆油田公司勘探开发研究院 陕西西安 710018;
    4. 中国石油长庆油田公司勘探事业部 陕西西安 710018
  • 收稿日期:2018-08-06 修回日期:2018-09-20 出版日期:2019-02-25 发布日期:2019-03-05
  • 通讯作者: 范立勇,男,1978年1月生,2007年获中国科学院广州地球化学研究所博士学位,现为中国石油长庆油田公司勘探开发研究院高级工程师,主要从事鄂尔多斯盆地古生界综合地质研究及勘探生产工作。Email:lyfan123_cq@petrochina.com.cn
  • 作者简介:付金华,男,1962年12月生,1982年获江汉石油学院学士学位,2004年获西北大学博士学位,现为中国石油长庆油田公司副总经理、教授级高级工程师,长期从事石油天然气地质综合研究及油气勘探管理工作。Email:fjh_cq@petrochina.com.cn
  • 基金资助:

    中国石油天然气股份有限公司重大科技专项(2016E-05)和中国石油天然气集团有限公司勘探与生产分公司前期项目(135YQZP-2017-KT11)资助

Gas accumulation conditions and key exploration & development technologies in Sulige gas field

Fu Jinhua1,2, Fan Liyong2,3, Liu Xinshe2,4, Huang Daojun2,3   

  1. 1. PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710018, China;
    2. National Engineering Laboratory of Low Permeability Oil and Gas Field Exploration and Development, Shaanxi Xi'an 710018, China;
    3. Research Institute of Exploration and Development, PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710018, China;
    4. Exploration Department, PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710018, China
  • Received:2018-08-06 Revised:2018-09-20 Online:2019-02-25 Published:2019-03-05

摘要:

截至2017年,鄂尔多斯盆地苏里格地区有利勘探面积为5.5×104km2,天然气总资源量近6.0×1012m3,已探明(含基本探明)储量为4.77×1012m3,已建成产能为230×108m3/a的天然气生产规模,是中国陆上发现的储量最大的天然气田。多年研究表明:①苏里格气田产层主要为上古生界二叠系石盒子组8段和山西组1段,为典型的致密砂岩气藏;②石炭系本溪组、二叠系太原组和山西组广泛发育的煤系地层为气藏提供了充足的气源;③发育"敞流型"湖盆三角洲沉积模式,平缓底形、多源供砂、强水动力、多期叠加控制着大面积储集砂体的分布;④储层为河流—三角洲相砂岩,物性较差、非均质性强,平均孔隙度为4 % ~12 % ,平均渗透率为0.01~1 mD;⑤气藏具有广覆式生烃、弥漫式充注、近距离运聚、大面积成藏等特征;⑥气藏压力系数为0.62~0.90,属低压气藏,单井产量低;⑦沙漠区全数字地震技术、黄土塬非纵地震技术、测井精细评价技术、致密砂岩储层改造技术、水平井开发技术是苏里格气田勘探开发的关键技术。

关键词: 苏里格气田, 致密气, 成藏条件, 勘探开发, 关键技术

Abstract:

By the end of 2017, the Sulige area in Ordos Basin has the favorable exploration area of 5.5×104km2, the total reserve of natural gas of nearly 6.0×1012m3 and the proven reserve (including basic proven reserve)of 4.77×1012m3, where the annual production of natural gas reaches 230×108m3, and the Sulige gas field is the largest onshore natural gas field in China. The pay zone of the Sulige gas field mainly is Member 8 of Shihezi Formation and Member 1 of Shanxi Formation of Permian which belong to the typical tight sandstone gas reservoir. The coal measure strata in Carboniferous Benxi Formation, Permian Taiyuan Formation and Shanxi Formation provide abundant gas sources for the Sulige gas reservoirs. An open-flow sedimentary model of lacustrine delta is developed, the gentle bottom, sand supply from multi-source, strong hydrodynamic force and multi-period superposition control the distribution of large-area reservoir sand body. Lithology of the reservoir is the sandstone of the fluvial-delta facies, the physical property is poor and the heterogeneity is strong, the average porosity ranges from 4 % to 12 % and the average permeability varies from 0.01 to 1 mD. The gas reservoir is characterized by wide hydrocarbon generation, pervasive hydrocarbon charging, short-range migration and massive accumulation. The pressure coefficient of the gas reservoir ranges from 0.62 to 0.90, indicating the low-pressure gas reservoir, and the single-well production is low. Full digital seismic technique in the desert area, non-longitudinal seismic technique in the loess plateau, accurate logging evaluation technique, tight sand reservoir stimulation technology and horizontal well development technology are key technologies for exploration and development of Sulige gas field.

Key words: Sulige gas field, tight gas, accumulation condition, exploration and development, key technology

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