摘要
探测已下套管的生产井或注水井的附近有无水层或窜槽的水流动 ,传统的方法是用水泥胶结测井图或其它的声波测井图 ,就水泥复盖层进行分析 ,用间接的方法测定水层。文章介绍一种最新的井眼电缆测井方法 ,即水流测井图法 ,可直接探测流体运移路线的变更情况来评估水层。将装有固态中子源的测井仪 ,固定于靠近井筒的区域 ,先开通激活瞬变氧 ,使中子源产生放射作用 ,在水流通过的探测器中 ,伽马射线计数器可记录下瞬变感应特性曲线 ,对这些曲线进行分析 ,就可以直接检测出水流 。
How to measure the water flow in the cased well or water filling well, the traditional methods are using the CBL data or other sonic logging data to analyse, which are indirectional methods. A new cased well wireline service, which is water flow logging tool, can detect the water flow channel, so it directional determine the water layer. The logging tool loaded with a solid state neutrou source, is fixed near the wellbore. Turnning on the switch to act the instantanous oxygen, and making the neutron source to produce the radioactire action, the gamma ray counter can record the instantanous response data when the water flow pass by the transducer. Analysing the data can directional determine the water flow velocity and estimate the flow magnitude.
出处
《石油仪器》
1998年第6期17-21,52-53,共5页
Petroleum Instruments
关键词
测井仪
激活能
脉冲中子
水流测井仪
logging equipment, water current, water channeling, activation energy, pulsed nevtron, gamma ray
