| abstract |
Gellable compositions containing: n (a) water; n (b) a water-soluble organic polymer bearing special chelating functional groups; n (c) a multi-valent metal ion capable of causing the polymer to crosslink, n are useful to recover oil from a oil field. n Said compositions make it possible gels to be obtained which are endowed with improved physical properties and show a higher stability under the conditions prevailing in the oil field. |