顺北超深断溶体储层典型试井曲线特征及类别

Typical Characteristics and Types of Well-test Curves of Ultra-deep and Fault-controlled Formation in Shunbei Region

张宁 李宗宇 张云 聂仁仕 李景舜

ZHANGNing LIZongyu ZHANGYun NIERenshi LIJingshun

中国石化西北油田分公司, 新疆 乌鲁木齐 830011 油气藏地质及开发工程全国重点实验室·西南石油大学, 四川 成都 610500

Northwest Oilfield Company, SINOPEC, Urumqi, Xinjiang 830011, China National Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

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。

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

10.11885/j.issn.1674-5086.2024.02.21.01