| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 09.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Method of fracturing subterranean formation of well used in recovering oil or gas (a) Prepg aq polymer fluid (b) Prepg a crosslinking agent by combining in soln an amount of Zr salt with aldehyde or dialdehyde & allowing soln to react (c) Admixing said agent with aq polymer fluid (d) Injecting said polymer fluid admixed with said crosslinking agent (additive) into the well at sufficient rate or pressure to fracture the formation |
| PATENT PHOTOCOPY | Available on request |
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