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 one polymerizable chemical compound and a catalyst. The organic mixture reacts with a limited amount of a 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 lead and of at least an element of the group constituted by nickel, copper and zinc.
Claims16
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, in situ, at the contact of an oxidizing gas, of 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 quantity to produce substantially complete solidification of said organic liquid, said quantity being so limited that the temperature reached in the formation during said reactions does not exceed 350.degree. C., wherein said liquid organic mixture contains a catalyst comprising in combination:
- (a) lead and (b) at least one of nickel, copper 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 a catalyst, and injecting, in situ, 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 comprising employing as said catalyst, in combination:
- (a) lead and (b) at least one of nickel, copper or zinc.
Dependencies are inferred from the claim text.