提高超稠油水平井开采工艺技术研究与应用

发布时间：2018-06-24 14:54

本文选题：超稠油 + 水平井　；参考：《东北石油大学》2015年硕士论文

【摘要】：当前,全世界陆上常规油气田大多数处于开采后期,随着常规原油受到储量增长的限制,开采稠油油藏显得更加重要,水平井作为一项具有先进特征的钻井和采油技术,对于油田的开发具有特别重要的意义。随着水平井规模不断扩大,生产中也逐渐暴露出一些新的问题,使得水平井产量逐渐下滑。针对目前存在的一些阻碍辽河油区超稠油水平井产量提升的突出问题,如高压区水平井转抽放喷时井口溢流现象,导致作业周期过长;水平井水平段动用不均现象,水平段蒸汽局部突进,造成产能损失,影响开发效果;稠油开采过程中,井筒附近渗流面积小、压力下降快,井筒内稠油流动阻力大,影响稠油井产量等。本文针对目前水平井发展中存在的问题进行了细致的分析,对于现有技术措施的不足进行了改进和创新,主要包括水平井不动管柱开采技术,水平井分段完井、分段注汽技术,水平井水平段电加热工艺技术。通过采用最新的工艺技术手段,对超稠油水平井配套工艺技术不断完善、创新,取得了巨大成功,达到了利用水平井高效开发超稠油油藏的目的,同时通过对这些问题的研究,也加深了对超稠油特性的了解,对保持原油产量的稳定及增长具有非常重要的意义。
[Abstract]:At present, most of the onshore conventional oil and gas fields in the world are in the late stage of production. With the reserve growth of conventional crude oil, it is more important to exploit heavy oil reservoirs. As an advanced drilling and oil recovery technology, horizontal wells have advanced characteristics. It is of great significance to the development of oil fields. With the expansion of horizontal well scale, some new problems are gradually exposed in production, which makes horizontal well production decline gradually. In view of some outstanding problems existing in Liaohe oil area, such as wellhead overflow phenomenon when horizontal wells in high pressure area are diverted from pumping and blowout, the operation cycle is too long and the horizontal section of horizontal wells is unevenly produced. In the process of heavy oil recovery, the percolation area near the wellbore is small, the pressure drops quickly, the flow resistance of heavy oil in the wellbore is large, and the production of heavy oil wells is affected. In this paper, the problems existing in the development of horizontal wells are analyzed in detail, and the shortcomings of existing technical measures are improved and innovated, mainly including the production technology of horizontal wells with fixed tubing string, horizontal wells with segmented completion and steam injection technology. Horizontal section electric heating technology in horizontal well. By adopting the latest technology and means, the matching technology of horizontal wells for super heavy oil has been continuously improved, innovated, great success has been achieved, and the purpose of developing ultra-heavy oil reservoirs efficiently by using horizontal wells has been achieved. At the same time, through the study of these problems, It also deepens the understanding of the characteristics of super heavy oil and is of great significance to maintain the stability and growth of crude oil production.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357

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