热力试油技术在A井上的应用和效果分析

Application and Effect Analysis of Thermal Oil Well Testing Technology in the Well A

随着油田勘探开发的不断深入,稠油油藏的有效动用也越来越受到重视,蒸汽采油技术成为国内外油田稠油开采的重要手段,同时热力试油技术成为稠油油藏勘探开发试油评价的有效方法。综合借鉴国内外的研究成果,经过室内模拟分析优化了热力试油的注入蒸汽管柱、注入蒸汽量、注入蒸汽速度、注入蒸汽干度、焖井时间等,给出了A井热力试油施工的优化设计。通过现场试验进行检验,与常规试油工艺相比取得了较好的试油效果,达到预期的热力试油后产液量在5 t/d以上的目标,热力试油工艺取得了成功。说明在现有工艺条件下,对于相同类型油藏,原油采收率提高情况与试油施工工艺和参数的优化密切相关,因此,通过热力试油技术在现场的应用和效果分析为今后稠油勘探开发中的试油评价研究提供了借鉴和参考价值。

The effective use of heavy oil reservoir was paid more and more attention with the development of oilfield exploration.Steam flooding technology has become an important means of heavy oil exploitation in China and abroad.At the same time,the thermal oil well testing technology has been effectively used for evaluating the oil well testing in the exploration and exploitation of heavy oil reservoir.Through the reference of research results from all over the world,indoor simulation has been conducted to analyze and optimize the several aspects in thermal oil well testing,including pipe string for steam injection,steam volume,injecting rate of steam,steam dryness and well shut-in duration,etc.An optimal design of thermal oil well testing operation in well A was given out.Field test showed that the thermal oil well testing technology was better than conventional method in oil well testing,which has successfully achieved the expected fluid volume of more than 5t/d after test.It is indicated that the increment of crude oil recovery is closely related to the oil well testing technology and optimal parameters for the same type of reservoir under the existing conditions.Therefore,the application and effect analysis of thermal oil well testing can provide the reference and value for evaluating the oil well testing in heavy oil exploration and development in the future.