摘要
涪陵页岩气储层孔隙度、渗透率极低,必须依靠大型水力压裂来实现措施增产的目的。压裂后普遍存在压裂液返排率低的现象。生产过程中,页岩气以孔隙中游离气渗流、吸附气解吸附及扩散和页岩储层自吸等机理进行产气。采用套管生产,依靠气体的临界携液速度进行排水采气,产气产水较为稳定,能实现页岩气稳定生产。
The porosity and permeability of Fuling shale gas reservoir are extremely low; its development must rely on large-scale hydraulic fracturing to increase the production. The fluid flowback rate is generally low after fracturing. Shale gas produces through seepage of free gas in pores, desorption and diffusion of adsorbed gas, and shale reservoir imbibition mechanism for gas in the process of production. In using the casing to produce shale gas, drainage gas recovery was carried out by relying on critical liquid carrying flow rate of gas, gas and water production was relatively stable, the purpose of stable production of shale gas was achieved.
出处
《辽宁化工》
CAS
2015年第10期1237-1239,共3页
Liaoning Chemical Industry
关键词
页岩气
返排特征
生产特征
渗流
shale gas
flowback characteristics
production characteristics
seepage
