油气藏评价与开发 ›› 2025, Vol. 15 ›› Issue (5): 891-899.doi: 10.13809/j.cnki.cn32-1825/te.2025.05.018

• 非烃能源资源 • 上一篇    下一篇

莺歌海盆地X气田基于地热模型的地热资源评价

梁玉凯1,2(), 郑华安1,2, 曾倩宜1,2, 宋吉锋1,2, 田中原1,2, 蒋恕3,4,5()   

  1. 1.中海石油(中国)有限公司海南分公司,海南 海口 570312
    2.中国海油南海油气能源院士工作站,海南 海口 570312
    3.中国地质大学(武汉)深层地热富集机理与高效开发全国重点实验室,湖北 武汉 430074
    4.中国地质大学构造与油气资源教育部重点实验室,湖北 武汉 430074
    5.中国地质大学(武汉)新能源学院,湖北 武汉 430074
  • 收稿日期:2024-08-22 发布日期:2025-09-19 出版日期:2025-10-26
  • 通讯作者: 蒋恕(1976—),男,博士,教授,主要从事油气和地热勘探开发研究。地址:湖北省武汉市鲁磨路388号,邮政编码:430074。E-mail:jiangsu@cug.edu.cn
  • 作者简介:梁玉凯(1981—),男,硕士,高级工程师,主要从事采油和采热工艺技术研究与应用。地址:海南省海口市秀英区长滨三路6号1609室,邮政编码:570312。E-mail:liangyk1@cnooc.com.cn
  • 基金资助:
    湖北省国际科技合作项目“全球地热新能源勘探开发有利区预测和利用技术研究”(2024EHA026);深地国家科技重大专项“典型高温地热系统精细表征与资源评价”(2024ZD1003503);国家重点研发计划项目课题“地质资源智能预测及勘探开发地质风险评估理论模型与方法”(2022YFF0801202);国家重点研发计划项目“地质资源精准开发风险预测的大数据智能分析技术及平台建设”(2022YFF0801200)

Geothermal resource evaluation of X gasfield in Yinggehai Basin based on geothermal modeling

LIANG Yukai1,2(), ZHENG Hua’an1,2, ZENG Qianyi1,2, SONG Jifeng1,2, TIAN Zhongyuan1,2, JIANG Shu3,4,5()   

  1. 1. CNOOC China Limited, Hainan Company, Haikou, Hainan 570312, China
    2. CNOOC South China Sea Oil & Gas Energy Academician Workstation, Haikou, Hainan 570312, China
    3. State Key Laboratory of Deep Geothermal Resources, China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China
    4. Key Laboratory of Tectonics and Petroleum Resources Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China
    5. School of Sustainable Energy, China University of Geosciences (Wuhan), Wuhan, Hubei 430074, China
  • Received:2024-08-22 Online:2025-09-19 Published:2025-10-26

摘要:

莺歌海盆地是中国南海西部海域天然气勘探的重点区域,近年来在X气田黄流组不仅发现了具有商业潜力的气层,而且钻遇了大量高温地层水,显示出水热型地热资源开发的良好前景。然而,当前尚缺乏针对该系统的地热资源量评价研究。以莺歌海盆地X气田为例,综合钻井、测井、岩心和地震资料,构建了非均质三维热储地质模型,实现了孔隙度、渗透率、温度和含水饱和度等关键属性的网格化建模与分配。模型构建过程中引入多次随机模拟与地震属性约束,以增强地质参数空间展布的合理性与精度。基于该模型,采用容积法对黄流组热储进行了地热资源量评价,并识别了主要地热富集区。研究表明:黄流组热储地层温度介于167.0~197.6 ℃,平均温度达186.5 ℃,具备高温地热开发条件。地热总资源量为3.84×10¹⁶ kJ,折合标准煤1 310.5×10⁶ t,其中细砂岩为主要热储。按8%的可采系数计算,可采资源量约为0.31×10¹⁶ kJ,折合标准煤104.8×10⁶ t。资源空间分布揭示了2个主要地热富集区,均位于黄流组深水浊积水道砂体中,具有高温、良好物性和细砂岩发育等特点,是未来开发的优选区域。同时,含水饱和度模型分析显示,黄流组东部与西部含水率均较高,发育独立水体,可作为潜在的开发区。研究成果为莺歌海盆地地热资源的分布特征和开发潜力提供了更直观的认识,对推动中国海上气田与地热协同开发具有重要指导意义。

关键词: 莺歌海盆地, 油气田地热, 热储建模, 海上地热资源评价, 容积法

Abstract:

The Yinggehai Basin is a key area for natural gas exploration in the western South China Sea. In recent years, commercially viable gas formations and abundant high-temperature formation water have been discovered in the Huangliu Formation of the X gasfield, indicating promising prospects for hydrothermal geothermal resource development. However, geothermal resource evaluation for this system are still lacking. Taking the X gasfield in the Yinggehai Basin as a case study, a heterogeneous 3D geothermal reservoir geological model was constructed by integrating drilling, logging, core, and seismic data. Key properties such as porosity, permeability, temperature, and water saturation were modeled and assigned in a gridded format. During the model construction, multiple stochastic simulations and seismic attribute constraints were introduced to enhance the rationality and accuracy of the spatial distribution of geological parameters. Based on this model, the volumetric method was applied to evaluate the geothermal resource potential of the Huangliu Formation, and the main geothermal resource-rich zones were identified. The results showed that the reservoir temperatures in the Huangliu Formation ranged from 167.0 ℃ to 197.6 ℃, with an average of 186.5 ℃, indicating favorable conditions for high-temperature geothermal development. The total geothermal resource was estimated to be 3.84×10¹⁶ kJ, equivalent to 1 310.5×10⁶ t of standard coal, with fine sandstone serving as the main reservoir lithology. Assuming a recovery coefficient of 8%, the recoverable resource was approximately 0.31×1016 kJ, equivalent to standard coal of 104.8×10⁶ t. The spatial distribution of resources revealed two major geothermal-rich zones, both located in the sand bodies of deepwater turbidite channels of the Huangliu Formation. These zones were characterized by high temperatures, favorable physical properties, and well-developed fine sandstone, making them preferred areas for future development. Meanwhile, water saturation model analysis indicated high water content in both the eastern and western parts of the Huangliu Formation, suggesting the presence of isolated water bodies that could serve as potential development areas. The research results provide clearer insights into the distribution characteristics and development potential of geothermal resources in the Yinggehai Basin and offer important guidance for promoting the integrated development of offshore gas fields and geothermal energy in China.

Key words: Yinggehai Basin, geothermal energy in oil and gas fields, geothermal reservoir modeling, offshore geothermal resource evaluation, volumetric method

中图分类号: 

  • TE51