摘要
致密砂岩气是一种重要的非常规能源,但致密砂岩储层属于低孔低渗地层,在压裂增产改造过程中存在诸多问题。本文通过文献调研,从致密砂岩气藏地质特征出发,剖析了致密砂岩气藏压裂过程中存在的主要技术难点,并对当前致密砂岩气藏主流压裂技术进行了对比分析。结果表明,水平井裸眼滑套分段压裂和水平井无限级滑套分段压裂工艺技术最具发展前景。同时,建议将现有的致密砂岩气藏压裂工艺技术与CO2泡沫压裂、N2增能压裂等低损害压裂技术相结合,以达到压裂施工过程中储层保护的目的。
Tight sandstone gas is an important unconventional energy. Tight sandstone reservoirs are typical low porosity and low permeability formations.So there are many problems in the process of fracture engineering.In this paper,the main technical difficulties during the tight sandstone gas reservoirs fracturing were analyzed based on geological characteristics of tight sandstone gas reservoirs, and the latest fracturing technology are summarized.The results show that,sliding sleeve fracturing and infinite stage sliding sleeve fracturing for horizontal well is the most promising.At the same time,it is suggested to combine the existing fracturing technology of tight sandstone gas reservoir with low-damage fracturing technology such as CO_2 foam fracturing and N_2 boosting fracturing in order to achieve reservoir protection during fracturing construction.
作者
黄力
陶祖文
李海昆
HUANG Li TAO Zuwen LI Haikun(Downhole Operation Branch of Sinopec Southwest Petroleum Engineering Company, Deyang Sic huan 618000, China)
出处
《石油化工应用》
CAS
2017年第1期11-14,共4页
Petrochemical Industry Application
关键词
致密砂岩
水力压裂
裸眼滑套分段压裂
无限级滑套分段压裂
储层保护
tight sandstone
hydraulic fracturing
sliding sleeve fracturing
infinite stage sliding sleeve fracturing
reservoir protection
