针对常规放射性同位素吸水剖面测井工艺无法满足多层管柱配注井吸水剖面测试要求的问题,通过优选放射性同位素示踪剂和防弥散剂,优化放射性同位素示踪剂注入参数等措施,提高放射性同位素示踪剂测试精度。研发了同位素示踪剂井口释放装置,其利用不同注水层段间的注水压差在井口采油树即可释放同位素示踪剂,操作简单可靠。该技术解决了多层管柱配注井的测井难题,为多层管柱配注井技术的推广应用提供了技术支持。
To address the problem that the conventional radioisotope injection profile logging technology cannot meet the requirements of the water injection profile test of injection wells with multi-layer strings, the accuracy of radioisotope tracer testing was improved by selection of optimal radioisotope tracer and anti-dispersion agent, optimization of radioisotope tracer injection parameters, and other measures. The isotope tracer release device at wellhead was developed to release the isotope tracer at the wellhead Christmas tree based on the water injection pressure difference between different water injection intervals, which was simple and reliable in operation. This technology solves the logging difficulties of injection wells with multi-layer strings, and provides technical support for the promotion and application of the technology of injection well with multi-layer string.
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