弱挥发性油藏举升工艺优化设计及配套技术  

Optimization design and supporting technology of lifting process in weak volatile reservoir

作　　者：赵明[1] 蒋国斌[1] 李春霞[1] 于浩波[1] Zhao Ming;Jiang Guobin;Li Chunxia;Yu Haobo(Production Technology Institute of Daqing Oilfield Limited Company)

机构地区：[1]大庆油田有限责任公司采油工程研究院

出　　处：《采油工程》2022年第1期55-61,86-87,共9页Oil Production Engineering

摘　　要：针对FZ油田F4区块采油井产油挥发性强、产气量大、压力高的特点,开展了举升工艺优化设计方法研究,以确保方案举升工艺设计内容与油藏地质特征的合理匹配。运用井筒多相流理论,准确计算井筒、地面管线内温压分布,预测水合物生成条件,合理优化节流方式、节流嘴直径和安装位置。以充分利用地层能量实现高效举升为原则,确定采油井装机时机和合理泵深。以杆柱力学分析、抽油杆及油管偏磨预测为基础,实现抽油杆、油管、泵等举升设备的优选定型。通过举升工艺方案的设计与配套措施优选,解决了F4区块采油井井筒及地面管线的冻堵问题,保证采油井的高效举升与安全生产。该举升工艺优化设计对同类方案设计具有示范作用和推广意义。According to the characteristics of high volatility,large gas production and high pressure in production wells of F4 block of FZ Oilfield,the optimization design method of lifting technology was studied to ensure the reasonable matching between the lifting design and the geological characteristics of reservoir.By using the wellbore multi-phase flow theory,the temperature and pressure distribution in the wellbore and surface pipeline were accurately calculated,the hydrate formation conditions were predicted,and the throttling mode,choke diameter and installation position were reasonably optimized.Based on the principle of making full use of formation energy to achieve efficient lifting,the installation time and reasonable pump depth of oil production wells were determined.According to the mechanical analysis of rod string and the prediction of eccentric wear of sucker rod and tubing,the optimization and mode selection of lifting equipments such as sucker rod,tubing and pump were realized.Through the design of lifting process scheme and the optimization of supporting measures,the problem of freezing and plugging of production wellbore and surface pipeline in F4 block was solved to ensure the efficient lifting and safe production of production wells.The optimization design of lifting technology has demonstration and popularization significance for similar scheme design.

关 键 词：弱挥发性油藏 举升工艺 优化设计 配套技术 采油工程方案 

分 类 号：TE34[石油与天然气工程—油气田开发工程]