页岩气水平井气液两相流动规律实验研究  

Experimental Study on Gas-Liquid Two-Phase Flow in Shale Gas Horizontal Wells

作　　者：吴建发 杨学锋[1] 樊怀才[1] 张鉴 刘洪 

机构地区：[1]中国石油西南油气田分公司页岩气研究院,四川 成都 [2]重庆科技学院安全工程学院(应急管理学院),重庆

出　　处：《石油天然气学报》2023年第2期109-118,共10页Journal of Oil and Gas Technology

摘　　要：为了研究页岩气水平井井筒气液两相流动特征,掌握井筒生产流压分布特征,本文设计制作了可视化页岩气水平井井筒气液两相流模拟实验装置,能够模拟流体通过多条裂缝进入水平井,进行变质量流动实验。通过实验研究了上翘型、水平型和下倾型水平井两相流流动规律。分析了各裂缝进气量、进液量分布及沿程压力分布特征,结果表明,页岩气水平井各井段中,造斜段最易积液,但对水平段各裂缝进气量影响较小;各井型中,下倾型水平井最易积液,会降低各裂缝进气量,最不利于生产。下倾角度越大,趾端积液越严重,裂缝的进气量越小。In order to study the characteristics of gas-liquid two-phase flow and master the distribution characteristics of flow pressure in shale gashorizontal well, this paper designs and makes a visual experimental device for simulating gas-liquid two-phase flow in shale gas horizontal well, which can simulate fluid entering horizontal well through multiple fractures for variable mass flow experiment. Two-phase flow laws of the updip, horizontal and downdip horizontal wells are studied through experiments. The results show that in each section of horizontal well, the inclined section is the most likely to load liquid, but it has little influence on the gas production of each fracture in the horizontal section;Among various good types, the downdip horizontal well is the most likely to load liquid, which will reduce the gas production of each fracture and is the most unfavorable for production. The downward inclination angle is larger, the toe of horizonal well will load more fluid, and the gas production of the fracture will be smaller.

关 键 词：页岩气水平井 两相流 流量分布 流压分布 压降梯度 

分 类 号：TE3[石油与天然气工程—油气田开发工程]