摘要
为了指导南堡凹陷2号构造以东地区东一段油气钻探,在南堡凹陷断圈含油气性影响因素分析的基础上,选取油源断裂类型、砂地比、断圈所处的构造带类型、东二段区域性盖层断接厚度和断层侧向封闭能力作为南堡凹陷2号构造以东地区东一段断圈含油气性综合定量评价参数,采用模糊数学综合评判方法,对南堡凹陷2号构造以东地区东一段8个断圈含油气性进行了综合定量评价,结果表明:3个见油气显示的断圈含油气性综合定量评价值均大于2。已钻断圈含油气性综合定量评价值越大,油气显示程度越高;反之则越低。3个未钻断圈中T4-51N断圈钻探成功率大,T4-21N断圈钻探有一定风险,T3-12S断圈钻探应为水层。
Based on an analysis of factors affecting the oil-gas-bearing of the fault traps in Nanpu Depression,a comprehensive and quantitative evaluation of the oil-gas-bearing of 8 fault traps of Ed1 Formation in the east of number 2 structure of Nanpu Depression was conducted using fuzzy comprehensive evaluation,with an aim to provide a guide for oil and gas drilling there. The parameters used in the evaluation included types of oil source fault,ratio between sandstone and stratum thickness,types of the structural belt encompassing the fault trap,not faulted thickness of Ed2,and fault＇s lateral sealing capability of caprock. The results showed that all the three drilled fault traps where oil-gas was present had a value larger than 2. The drilled fault traps with higher values had higher oil-gas shows; on the other hand,lower values indicated lower oil-gas shows. As to the three undrilled fault traps,T4-51 N fault trap exhibited the highest success rate of drilling,T4-21 N fault trap implied a certain risk of drilling,and in T3-12 S fault trap,wells should be drilled into the aquifer.
出处
《现代地质》
CAS
CSCD
北大核心
2015年第6期1418-1424,共7页
Geoscience
基金
国家科技重大专项"大气田形成条件
成藏机制与富集规律研究"(2011ZX05007-002)
关键词
下生上储式
断层圈闭
含油气性
综合定量评价
南堡凹陷
东一段
combination of lower generation and upper reservoir
fault trap
oil-gas-bearing
comprehensive and quantitative evaluation
Nanpu depression
Ed_1
