Method of obtaining a treatment composition for improving the productivity of hydrocarbon producing wells

Abstract

A method of obtaining a treatment composition for treating a hydrocarbon-bearing clastic formation having brine therein to enhance recovery of hydrocarbon from the formation. The method comprises: obtaining a formation information set comprising a temperature value, brine content value, and brine composition data obtained from a geological zone of the hydrocarbon-bearing clastic formation; comparing the formation information set to a compatibility information set to generate a comparison information set, the compatibility information set comprising compatibility information for at least at least one model brine and at least one model composition at least one model temperature; selecting a treatment composition based, at least in part, on the at least one comparison information set, wherein the treatment composition comprises a second surfactant dissolved in a second solvent; and obtaining the treatment composition for treating the hydrocarbon-bearing clastic formation to enhance recovery of hydrocarbon from the formation.

1 . A method of obtaining a treatment composition for treating a hydrocarbon-bearing clastic formation having brine therein to enhance recovery of hydrocarbon from the formation, the method comprising:
 obtaining a formation information set comprising a temperature value, brine content value, and brine composition data obtained from a geological zone of the hydrocarbon-bearing clastic formation;   comparing the formation information set to a compatibility information set to generate a comparison information set, the compatibility information set comprising compatibility information for at least one model brine and at least one model composition at least one model temperature, wherein each at least one model composition independently comprises at least one first surfactant dissolved in at least one first solvent;   selecting a treatment composition based, at least in part, on the comparison information set, wherein the treatment composition comprises a second surfactant dissolved in a second solvent; and   obtaining the treatment composition for treating the hydrocarbon-bearing clastic formation to enhance recovery of hydrocarbon from the formation.   
   
   
       2 . The method of  claim 1 , wherein selecting the treatment composition comprises interpolating. 
   
   
       3 . The method of  claim 1 , wherein obtaining the treatment composition comprises preparing the treatment composition. 
   
   
       4 . A method of treating a geological zone of a hydrocarbon-bearing clastic formation having brine therein, the method comprising injecting the treatment composition obtained in  claim 3  into the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       5 . A method of treating a geological zone of a hydrocarbon-bearing clastic formation having brine therein, the method comprising injecting the treatment composition obtained in  claim 1  into the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       6 . The method of  claim 1 , wherein the formation information set further comprises condensate content obtained from the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       7 . The method of  claim 1 , wherein the formation information set further comprises condensate content and condensate composition obtained from the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       8 . The method of  claim 1 , wherein at least a portion of the comparison information set is generated by computer simulation. 
   
   
       9 . The method of  claim 1 , wherein the at least one first surfactant comprises the second surfactant. 
   
   
       10 . The method of  claim 1 , wherein the at least one first solvent comprises the second solvent. 
   
   
       11 . The method of  claim 1 , wherein the second solvent comprises water. 
   
   
       12 . The method of  claim 1 , wherein the second solvent comprises at least one water-miscible organic solvent. 
   
   
       13 . The method of  claim 1 , wherein the second solvent comprises at least two organic solvents. 
   
   
       14 . The method of  claim 1 , wherein the at least one compatibility information set comprises compatibility information regarding the at least one model brine and a plurality of model compositions. 
   
   
       15 . The method of  claim 1 , wherein the plurality of model compositions comprises a third surfactant different from the first surfactant. 
   
   
       16 . The method of  claim 1 , wherein the at least one compatibility information set comprises compatibility information regarding the at least one model brine and a plurality of model compositions at a plurality of model temperatures. 
   
   
       17 . The method of  claim 13 , wherein the plurality of model temperatures has a highest model temperature and a lowest model temperature, and wherein the temperature obtained from the geological zone of the hydrocarbon-bearing clastic formation has a value of from at least the lowest model temperature up to and including the highest model temperature. 
   
   
       18 . The method of  claim 1 , wherein the at least one model temperature comprises a model temperature that has the same value as the temperature obtained from the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       19 . The method of  claim 1 , wherein the compatibility information set comprises compatibility information regarding a plurality of model brines and a plurality of model compositions at a plurality of model temperatures. 
   
   
       20 . The method of  claim 1 , wherein the at least one model brine is selected based at least in part on the brine composition data obtained from the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       21 . The method of  claim 1 , wherein at least one model brine has the same composition as the brine composition data obtained from the geological zone of the hydrocarbon-bearing clastic formation. 
   
   
       22 . The method of  claim 1 , wherein the surfactant is fluorinated. 
   
   
       23 . The method of  claim 1 , wherein the surfactant is fluorinated and nonionic. 
   
   
       24 . The method of  claim 1 , further comprising injecting the treatment composition into a specimen of the geological zone of the hydrocarbon-bearing clastic formation.