油气藏评价与开发 ›› 2018, Vol. 8 ›› Issue (1): 29-33.

• 油气藏评价 • 上一篇    下一篇

数值试井技术在大北102区块气藏认识的研究及应用

刘磊,陈东,陈宝新,魏聪,陈丽群,王翠丽   

  1. 中国石油塔里木油田分公司勘探开发研究院,新疆 库尔勒 841000
  • 收稿日期:2017-01-16 出版日期:2018-02-26 发布日期:2018-12-05
  • 作者简介:刘磊(1986—),女,工程师,天然气开发研究。
  • 基金资助:
    中国石油股份公司重大专项“前陆冲断带超深超高压气藏开发技术”(2014E-2104)

Research and application of numerical well testing technology in well block Dabei-102

Liu Lei,Chen Dong,Chen Baoxin,Wei Cong,Chen Liqun,Wang Cuili   

  1. (Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China)
  • Received:2017-01-16 Online:2018-02-26 Published:2018-12-05

摘要:

大北气田构造复杂,断裂发育,基质孔隙度、渗透率较低,具有高温高压、非均质性强的特点。在这种复杂的地质条件下,解析试井解释并不能很好地描述储层特征,存在局限性。根据气藏构造、断层、布井、测井资料建立符合实际的复杂不规则边界的数值试井地质模型,加载生产井生产数据产生渗流模型,进行非结构化网格Voronoi网格划分并离散,并通过考虑邻井干扰影响,调整储层物性参数,改变断层封堵性,最终建立了符合大北气田大北102区块实际特征的数值试井模型。研究表明通过在该区块首次研究并应用数值试井技术,从空间和时间上对气藏生产过程中的压力动态进行了准确描述,解决了大北102区块的连通性分析、断层封堵性评价和井间干扰问题,进一步深化气藏认识,研究成果直接指导大北102区块生产。

关键词: 大北气田, 数值试井, 连通性, 断层封堵性, 井间干扰

Abstract:

The Dabei gas field, with the complex geological structure, the developed faults and fractures and the low matrix porosity and permeability, has the characteristics of high temperature and pressure, and strong heterogeneity. Under these complicated geological conditions, the reservoir characteristics are poorly described by the analytical well test with limitation. Based on the static data of the structure, the fault, the well pattern and the well logging data, the numerical well test geological model with the complex irregular boundary closed to the actual condition was established, the seepage model was established by the production data of the gas production wells, and the unstructured Voronoi mesh was generated and discrete. Meanwhile, by considering the influences of the interference from the adjacent wells, the reservoir physical property parameters revision, and the fault sealing property alteration, the numerical well test model comformed to the actual condition of the well block Dabei-102 was proposed. The result showed that, through the first research and the application of the numerical well test technologies in this block, the numerical well test analysis and the interpretation can exactly describe the feature of the pressure changes during the development of the gas reservoir in time and space, solve the problems of the communication, the fault sealing property and the interference of the inter wells in well block Dabei-102, and further deepen the understanding of the gas reservoirs. The research result helps for the production of the gas wells in well block Dabei-102.

Key words: Dabei gas field, numerical well test, communication of inter wells, fault sealing property, interference of inter wells

中图分类号: 

  • TE353