氧活化测井在乍得智能注水中的应用

Application of oxygen activation logging in intelligent water injection in Chad

氧活化测井以点测的方式测量注水井的注入剖面,特别适合在配注井中使用。在处理资料时,经常困惑解释工程师的是如何准确判断流水峰的归属,以及计算的流量如何合理的校正。本文对乍得26口井的氧活化资料进行综合分析,对不同管柱结构下不同探头的流量与峰起点的关系,总结回归出一套图版。利用这些图版可以定量判断流水峰的归属及氧活化计算的流量的校正,并提高了资料解释的准确率和时效性,为油田开发注水措施的实施提供了可靠的保证。同时,氧活化测井可以对智能分注仪器进行检漏、检堵等监测。

Oxygen activation logging measures the water injection profile of water injection wells in the form of spot measurement,which is particularly suitable for use in injection allocation wells.When processing data,engineers are often confused to explain how to accurately determine the attribution of water peak and how to reasonably correct the calculated flow.This paper comprehensively analyzes the oxygen activation data of 26 wells in Chad,summarizes and regresses a set of charts for the relationship between the flow rate of different probes and the starting point of the peak under different pipe string structures.These charts can be used to quantitatively determine the attribution of water peak and correct the flow rate calculated by oxygen activation,and improve the accuracy and timeliness of data interpretation,providing a reliable guarantee for the implementation of oilfield development water injection measures.At the same time,the oxygen activation logging can monitor the leakage and plugging of the intelligent separate injection instrument.