The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2022
Filed:
Mar. 18, 2022
China University of Petroleum(east China), Qingdao, CN;
Fuhua Wang, Qingdao, CN;
Luyi Wang, Qingdao, CN;
Weidong Zhang, Qingdao, CN;
Haitao Zhu, Qingdao, CN;
Zezhuang Sun, Qingdao, CN;
Zhihao Zhang, Qingdao, CN;
Zhizun Wang, Qingdao, CN;
Dunyuan Yu, Qingdao, CN;
Yang Wang, Qingdao, CN;
Haiyang Liu, Qingdao, CN;
CHINA UNIVERSITY OF PETROLEUM(EAST CHINA), Qingdao, CN;
Abstract
A ternary water control and gas recovery method suitable for an unconsolidated siltstone gas reservoir is provided. It includes the following steps: first, running a silt control screen pipe manufactured by an interface hydrophobic modification into a wellbore to realize wellbore water control and silt control; second, filling a surface hydrophobic modified gravel in an annular space between the silt control screen pipe and the wellbore to form a hydrophobic gravel packing layer for water control and silt control; third, injecting a wetting agent aqueous solution into a stratum, and performing a hydrophobic modification on a gas reservoir seepage channel surface to realize in-situ waterblocking and silt migration of the unconsolidated siltstone gas reservoir, and then closing a well for a preset time before exploitation.