Title:
COLLECTION OF HYDROARBON INCREASED BY PENETRATION RATE IMPROVEMENT USING PHENOLIC GEL
Document Type and Number:
Japanese Patent JPS6189285
Kind Code:
A
Abstract:
Hydrocarbon recovery from subterranean reservoirs that are penetrated by either injector or producer wells is enhanced by selective permeability modification of the strata of the reservoir with gel-forming phenolic compositions. The injection of the phenolic composition follows a pH sequence specific to the reservoir environment which allows emplacement of the gel-forming composition the desired distance away from the wellbore and production of a uniform gel throughout the treated hydrocarbon-bearing reservoir. The permeability of a treated subterranean reservoir can be restored by treatment of the reservoir with either aqueous hypochlorite or mineral acid.
Inventors:
PIN U CHIYAN
GOODON DOWAITO GURIYUUZUMACHIY
KURIFUOODO NASANIERU MERUTSU
ROTSUKO ADORUFUO TOTEINO
GOODON DOWAITO GURIYUUZUMACHIY
KURIFUOODO NASANIERU MERUTSU
ROTSUKO ADORUFUO TOTEINO
Application Number:
JP21901885A
Publication Date:
May 07, 1986
Filing Date:
October 01, 1985
Export Citation:
Assignee:
PFIZER
International Classes:
C09K8/58; C09K8/02; C09K8/88; E21B43/25; E21B43/32; (IPC1-7): C09K7/00
Attorney, Agent or Firm:
Kyozo Yuasa