Process for consolidating geological formations
AssigneeInstitut Francais du Petrole
InventorsJacques Burger, Charles Bardon, Claude Gadelle
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Abstract
This process comprises injecting into the formations a liquid organic mixture containing at least a polymerizable chemical compound and a catalyst. The organic mixture reacts with a limited amount of an injected oxidizing gas to give a solid product which consolidates the formations without substantially reducing their permeability. The catalyst is characterized by the combination of at least one element of the group constituted by barium, zirconium, cerium, and lanthanides (e.g. lanthanum) and at least one element selected from the group formed by vanadium, manganese, iron, cobalt and zinc.
Claims22
A process for consolidating a geological formation, comprising the following two successive steps:
- (a) injecting into the formation a liquid organic mixture containing at least one polymerizable chemical compound, said mixture being capable to be subjected in situ at the contact of an oxidizing gas, to reactions starting at the normal temperature of the formation and leading to the production of a solid product which consolidates said formation without substantially reducing its permeability, and
- (b) injecting an oxidizing gas in a sufficient amount to produce substantially complete solidification of said organic liquid, said amount being limited so that the temperature reached in the formation during said reaction does not exceed 350.degree. C., and wherein said liquid organic mixture contains a catalyst which comprises in combination:
- (a) at least one element of barium, zirconium, cerium, or lanthanides and (b) at least one element of vanadium, manganese, iron, cobalt or zinc.
In a process for consolidating a geological formation comprising injecting into the formation a liquid organic mixture containing at least one polymerizable chemical compound, and injecting, in situ, at the contact of an oxidizing gas, to cause reactions starting at the normal temperature of the formation and leading to the production of a solid product which consolidates this formation without substantially reducing its permeability, the improvement wherein the organic mixture injected contains a catalyst comprising in combination:
- (a) at least one of barium, zirconium, cerium, or a lanthanide, and (b) at least one of vanadium, manganese, iron, cobalt, or zinc.
Dependencies are inferred from the claim text.