庆深气田低压气井增压开采技术研究

发布时间：2018-04-08 20:07

本文选题：低压气井　切入点：压缩机　出处：《东北石油大学》2015年硕士论文

【摘要】：气田随着开发年限的延长,气藏压力大幅衰竭.,采气分公司管辖的地面低压系统外输管网冬季运行压力接近2.OMPa,根据目前气井的生产情况及气田开发预测,部分气井井口压力已低于或接近地面集输系统压力,尤其在冬季供气高峰期,难以进入集输管网,影响了外供气量,导致气田开采效益逐年变差,但该部分气井尚未达到废弃标准,仍有继续开发的价值。为了实现此类气井的有效开采,需地面采取增压措施将这部分低压气井的剩余储量有效动用,提高气田开采效益。增压开采是气田开采后期,由于地层压力下降,不能满足地面集输要求,而采取的旨在提高采出能力和地面输送能力的采输方法,低压气井增压是国内外气田在开采中后期为提高采收率而采取的主要措施,在国内气田开发中应用广泛,大部分气藏在生产后期都通过实施增压开采最大限度地采出天然气。庆深气田开发建设中尚无成熟增压开采技术及经验可以借鉴,汪家屯气田无论从储量、井数,还是产量来看,都是中浅层气田的主力,因此本文以汪家屯气田为研究对象,结合低压气井分布情况及其产气、产水规律,从增压时机的优选、增压方式及规模、增压后产能变化规律等方面开展研究,探索中浅层气藏增压开采建设可行性,因此,优选低压气井最多的SY集气站开展集中增压先导性试验,SY集气站是目前中浅层气田中管辖井数最多的一个站,共有气井20口,目前已有3口气井因低压低产停产多年,预测到2015年前将有11口气井面临停产的问题,目前开展增压的时机比较适宜。增压增产工艺的研究是认识与实践相结合的反复过程,本文试验增压增产工艺在中浅层气藏的适应性,为深层气田增压开发推广提供技术储备和支持。
[Abstract]:With the extension of the development years, the gas reservoir pressure is largely depleted. The operating pressure of the surface low pressure pipeline network in winter is close to 2.OMPa. Based on the current production situation of gas wells and the prediction of gas field development,The wellhead pressure of some gas wells is lower than or close to the pressure of surface gathering and transportation system. Especially during the peak period of gas supply in winter, it is difficult to enter the pipeline network, which affects the external gas supply, resulting in the gas field production efficiency becoming worse year by year.But this part gas well has not reached the abandoned standard, still has the value of continuing development.In order to realize the effective exploitation of this kind of gas wells, it is necessary to take supercharging measures on the ground to effectively utilize the remaining reserves of this part of low pressure gas wells and to improve the production efficiency of the gas fields.Supercharged production is a kind of mining and transportation method which is adopted to improve the production capacity and surface transportation capacity because of the decrease of formation pressure, which can not meet the requirements of surface gathering and transportation.The pressurization of low pressure gas wells is the main measure to improve oil recovery in the middle and late stage of gas production at home and abroad. It is widely used in the development of domestic gas fields. Most gas reservoirs produce natural gas to the maximum extent through the implementation of pressurized production in the later stage of production.There is no mature pressurized production technology and experience to be used for reference in the development and construction of Qingshen gas field. The Wangjiatun gas field is the main force of the medium and shallow gas fields in terms of reserves, well numbers and production, so this paper takes Wangjiatun gas field as the research object.Combined with the distribution of low pressure gas wells and the laws of gas and water production, this paper studies the optimal timing of pressurization, the way and scale of pressurization, and the law of productivity change after pressurization, in order to explore the feasibility of pressurized production and construction of medium and shallow gas reservoirs.At present, the sy gas gathering station, which has the most selected low pressure gas wells, is the one station with the largest number of competent wells in the middle and shallow gas fields. There are 20 gas wells, and three gas wells have been shut down for many years due to low pressure and low production.It is predicted that 11 gas wells will be shut down by 2015.The study of supercharging and increasing production process is a repeated process of combining knowledge and practice. This paper tests the adaptability of supercharging and increasing production technology in medium and shallow gas reservoirs, which provides technical reserve and support for the development and popularization of deep gas field pressurization.
【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】：TE377

【相似文献】