第46卷
第1期
石油与天然气化工
CHEMICAL ENGINEERING OF OIL &GAS
提高化学示踪剂检测准确度实验研究
崔洁
中国石化胜利油田分公司胜利采油厂
摘要针对胜坨油田地层水组分复杂、加药类型多，影响化学示踪剂检测准确度的问题，开展了硝酸盐、硫氰酸盐、尿素3种示踪剂的检测准确度分析。结合示踪剂检测方法，对比了蒸馅水、注入污水、采出液配制示踪剂溶液的检测差异，提出了制作标准曲线的方法；开展了氮气泡沫驱起泡、注水用缓蚀剂、杀菌剂、二元复合驱用表面活性剂对示踪剂检测结果的影响研究。结果表明，尿素示踪剂的检测受各类药剂的影响较小，且成本较低，确定为适合胜坨油田的示踪剂。现场应用验证了示踪剂检测方法的适应性。
关键词化学示踪剂硝酸盐硫氟酸盐尿素
中图分类号：TE39
文献标志码：AD0l；10.3969/j.issn.1007-3426.2017.01.018
Experimental studyonimprovingtheaccuracyof chemical tracertest
Cui Jie
Shengli Oil Production Plant,Sinopec Shengli Oilfield, Dongying, Shandong, China
Abstract: Aiming at the problems of component complexity of layer water, multi-type dosing, affecting the accuracy of chemical tracer test in Shengtuo Oilfield, three kinds of tracers' detecting accuracy about nitrate, thiocyanate, carbamide were analyzed. Combining with tracer detecting methods, the difference of test results among distilled water, injection water, produced fluid configured tracer was compared, and the method of making standard curve was proposed. The effect of nitrogen forming flooding foaming agent, injecting anti-corrosive agent， biocide,binary combination driving surfactant on tracer test results were researched. The result showed that carbamide tracer was less affected by various types of agents and its cost was lower, which was identified to be optimum tracer for Shengtuo Oilfield, The applicability of the method was verified by the field application.
Key words: chemical tracer, nitrate, thiocyanate, carbamide
胜坨油田属于整装水驱油藏，经过五十多年开发，综合含水高达96.2%，纵向上和平面上水驱不均衡，为此多年来广泛应用化学示踪剂监测技术指导油藏注采调整与措施制定1-4)。胜坨油田主要采用硝酸盐[5-]、硫氰酸盐与尿素示踪剂(7-5)。示踪剂检测方法采用显色吸光光度法，即过滤后的采出液加人显色剂，测试吸光值，应用浓度-吸光值标准曲线回推得到采出
16
液示踪剂浓度。近年来，部分区块出现化学示踪剂检测不到或者检测浓度过低的间题，与开发动态认识严重不符。通过分析，认识到吸光光度法存在两方面问题：一是油井采出液组分复杂，会干扰示踪剂组分的显色程度，即吸光值的大小，应用蒸馏水做出的标准曲线回推浓度，会响检测准确度；二是注人水含有不同类型药剂，加入示踪剂后，示踪剂受药剂的影响，会干扰
基金项目：“十二·五"国家重大专项重点项目"胜利油田特高含水期提高采收率技术”(2011ZX05011)。
作者简介：崔洁(1973一），女，高级工程师，1996年毕业于中国石油大学（华东)采油工程专业，现就职于中国石化胜利油田分公
司胜利采油厂，主要从事注采工艺的研究与开发工作。E-mail;slsecuijie@163.com 万方数据