顺北超深断溶体储层典型试井曲线特征及类别

doi:10.11885/j.issn.1674-5086.2024.02.21.01

摘要/Abstract

摘要： 顺北地区超深断溶体储层主要发育有裂缝及片状洞穴，采用可横向穿越缝洞储集体的水平井进行开发，其试井曲线形态特征复杂多变。依据井筒和表皮效应结束后的中期试井曲线的典型特征，将顺北地区实测试井曲线分成了3个大类。该3大类试井曲线特征直接反映了井与缝洞储集体的不同接触关系。再根据后期的试井形态特征，将顺北地区实测试井曲线细分成了9个亚类，不同的亚类试井曲线特征明显不同，是井外围缝洞发育状况变化的试井曲线响应。最后，提出了与试井曲线特征相对应的3大类9个亚类的试井解释评价物理模型。本文研究成果可用于指导顺北地区的试井分析与试井研究工作，亦可为其他深层断溶体储层的试井研究提供借鉴与参考。

关键词: 顺北地区, 深层油气藏, 断溶体, 洞穴, 试井

Abstract: Fractures and sheet cave mainly develop in the ultra-deep and fault-controlled formation in Shunbei region. Horizontal well is adopted in this region to exploit the oil and gas because horizontal well can transversely pass through the fractured-caved formation. The well-test curves are complex and various. According to the middle curve characteristics after the wellbore storage and skin effects, the real well-test curves of Shunbei Region can be divided into 3 categories. The curve characteristics of the 3 categories can directly reflect the different contact relationship of horizontal well with fractures and caves. In addition, according to the late curve characteristics, the 3 categories can be further divided into 9 subcategories. The curve characteristics of the 9 subcategories differ each other and reflect different development status of fractures and caves in the periphery of horizontal well. At the end, the physical models of 3 categories and 9 subcategories, which are corresponding to the real well-test curves of 3 categories and 9 subcategories, are presented for well-test interpretations and evaluations. The research results in this article can be used to guide the work of well-test analysis and study for Shunbei region, and can also be used to guide the work of well-test study for other deep and fault-controlled formations

Key words: Shunbei Region, deep reservoir, fault-controlled formation, cave, well test

中图分类号:

TE312

张宁, 李宗宇, 张云, 聂仁仕, 李景舜. 顺北超深断溶体储层典型试井曲线特征及类别[J]. 西南石油大学学报(自然科学版), 2024, 46(4): 115-122.

ZHANG Ning, LI Zongyu, ZHANG Yun, NIE Renshi, LI Jingshun. Typical Characteristics and Types of Well-test Curves of Ultra-deep and Fault-controlled Formation in Shunbei Region[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2024, 46(4): 115-122.

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