稠油油藏分层注采管柱研究

发布时间：2018-10-14 19:28

【摘要】：稠油油藏开采进入中后期,为了进一步提高原油采收率,进行了多种新工艺、新技术的现场推广应用,为了适应新形势的需求,辽河油田钻采院工具所针对当前开发中应用的蒸汽驱分层注汽、SAGD等新技术自主研制了同心汽驱工艺。该系列技术的研制成功为蒸汽驱技术的顺利进行提供了技术保障。针对原有分层汽驱管柱在新工艺、新技术的现场应用中所存在的问题,本文在同心式分层汽驱管柱研究过程中,在进行了相关的理论计算和管柱结构的优化基础上,结合生产实际,设计了配套工具。使之既能够满足新工艺的技术要求, 又能够适用于现场施工作业,做到了既操作简单又安全实用。该管柱的研制过程中,从新工艺新技术的需求出发,在减少了重复的现场施工费用的同时,实现了分层注汽,在同心汽驱工艺管柱应用的同时还研制了蒸汽驱同心注汽井口装置,实现了注汽量的地面动态调控。针对稠油地层降粘、替代掺稀油及电加热举升工艺,实现低温输送,该稠油降粘开采节能降本新技术可实现地层降粘、井筒举升、低温输送一体化系统工程。完成了相关配套工具的设计研究并加工样机：研究设计井筒内药剂混合工具,打破常规使用化学降粘剂与稠油通过自由扩散作用,改善了均匀混合速度较慢的过程,迅速达到乳化降粘的效果。解决了掺稀油和电加热举升工艺在辽河油田稠油生产过程中亟待解决的突出问题。通过现场应用效果可见,随着蒸汽驱技术的大规模应用,稠油油藏分层注采工艺管柱具有广阔的应用前景,并具有显著社会效益和经济效益。
[Abstract]:In the middle and late stage of heavy oil reservoir production, in order to further improve crude oil recovery, a variety of new processes and new technologies have been carried out on the spot and applied, in order to meet the needs of the new situation. The concentric steam drive process has been developed independently by the tools of Liaohe Oilfield drilling and production Institute aiming at the new technologies such as steam drive stratified steam injection and SAGD. The successful development of this series of technologies provides a technical guarantee for the smooth progress of steam drive technology. In view of the problems existing in the field application of the original stratified steam drive string in the new technology and new technology, this paper has carried out the relevant theoretical calculation and the optimization of the pipe string structure in the research process of concentric stratified steam drive string. Combined with the actual production, designed a complete set of tools. It can not only meet the technical requirements of the new technology, but also can be applied to the field operation, which is simple, safe and practical. In the course of the development of the pipe string, starting from the demand of the new technology and new technology, the repeated field construction cost is reduced, and the stratified steam injection is realized at the same time. In addition to the application of concentric steam drive technology string, a steam drive concentric steam injection wellhead device is also developed, which realizes the ground dynamic control of steam injection rate. In view of viscosity reduction of heavy oil formation, replacement of dilute oil and electric heating lifting technology, low temperature transportation can be realized. This new technology can realize formation viscosity reduction, wellbore lifting and low temperature transportation integration system engineering. The design and manufacture of related tools are completed. The mixture tool of medicament in wellbore is studied and designed, which breaks the conventional use of chemical viscosity reducer and heavy oil through free diffusion, and improves the process of slow homogeneous mixing. The effect of emulsification and viscosity reduction is achieved quickly. The outstanding problems in the production of heavy oil in Liaohe Oilfield are solved. It can be seen from the field application that with the large-scale application of steam flooding technology, the pipe string of stratified injection and production technology in heavy oil reservoir has a broad application prospect, and has remarkable social and economic benefits.
【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】：TE357.44

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