Oilfield water management

Abstract

A method for managing oilfield water. Oilfield water data is grouped into discrete and non-overlapping groups. Outliers are removed from the data. Features of the remaining data are analyzed to identify most discriminative feature. The data is separated into training data and testing data, and the training data is fit into a model that shows the best precision, accuracy and recall. The model is confirmed using the testing data. Upon confirmation of the accuracy of the model, the model is applied to data for a new proposed oilfield well, and a new proposed project is implemented or disapproved based on a result of the identified model that predicts water production of the new proposed oilfield well.

1 - 20 . (canceled) 
     
     
         21 . A method of oilfield water management, comprising the steps of:
 obtaining oilfield water data;   discretizing the oilfield water data into a plurality of oilfield water data groups, each oilfield water data group representing oilfield water data taken from a discrete and non-overlapping predetermined time period and representing at least one observation of water use or water production from a plurality of oilfield wells;   separating the oilfield water data into training data and testing data;   generating a plurality of models based on the training data using a plurality of different classification models;   identifying a preferred model among the plurality of models, the preferred model exhibiting, among the plurality of models, at least one of higher precision, accuracy, and recall in modelling the training data;   running the preferred model on the testing data to confirm accuracy of the preferred model in estimating the oilfield water use or oilfield water production of an existing oilfield well;   applying the preferred model to determine an estimated oilfield water production range or an estimated oilfield water use range of a planned oilfield well;   monitoring actual oilfield water production and actual oilfield water use of an oilfield well corresponding to the planned oilfield well by sensor networks configured to monitor oilfield water production and oilfield water use; and   determining whether the actual oilfield water production of the oilfield well deviates from the estimated oilfield water production range or the actual oilfield water use of the oilfield well deviates from the estimated oilfield water use range.   
     
     
         22 . The method of  claim 21 , further comprising alerting an operator via electronic communication protocol when the actual oilfield water production of the oilfield well deviates from the estimated oilfield water production range or the actual oilfield water use of the oilfield well deviates from the estimated oilfield water use range. 
     
     
         23 . The method of  claim 21 , wherein identifying the preferred model is performed using a grid search function. 
     
     
         24 . The method of  claim 21 , further comprising updating the preferred model based on updated oilfield water data. 
     
     
         25 . The method of  claim 21 , further comprising estimating water resources required for the planned oilfield well based on a result of the preferred model. 
     
     
         26 . A system for oilfield hydrocarbon production management, comprising:
 a database of oilfield hydrocarbon production data;   sensor networks configured to monitor oilfield hydrocarbon production; and   a computer system with a processor for executing instructions stored in a computer-readable medium for:   obtaining oilfield water data,   storing the oilfield water data in the database,   discretizing the oilfield water data into a plurality of oilfield water data groups, each oilfield water data group representing oilfield water data taken from a discrete and non-overlapping predetermined time period and representing at least one observation of water use or water production from a plurality of oilfield wells,   separating the oilfield water data into training data and testing data;   generating a plurality of models based on the training data using a plurality of different classification models;   identifying a preferred model among the plurality of models, the preferred model exhibiting, among the plurality of models, at least one of higher precision, accuracy, and recall in modelling the training data;   running the preferred model on the testing data to confirm accuracy of the preferred model in estimating the oilfield water use or oilfield water production of an existing oilfield well;   applying the preferred model to determine an estimated oilfield water production range or an estimated oilfield water use range of a planned oilfield well;   monitoring actual oilfield water production and actual oilfield water use of an oilfield well corresponding to the planned oilfield well by sensor networks configured to monitor oilfield water production and oilfield water use; and   determining whether the actual oilfield water production of the existing oilfield well deviates from the estimated oilfield water production range or the actual oilfield water use of the oilfield well deviates from the estimated oilfield water use range.   
     
     
         27 . The system of  claim 26 , wherein the instructions stored in the computer-readable medium further comprise instructions for alerting an operator via electronic communication protocol when the actual oilfield hydrocarbon production of the oilfield well deviates from the estimated oilfield hydrocarbon production range. 
     
     
         28 . The system of  claim 26 , wherein the instructions stored in the computer-readable medium further comprise instructions for identifying the preferred model is performed using a grid search function. 
     
     
         29 . The system of  claim 26 , wherein the instructions stored in the computer-readable medium further comprise instructions for updating the preferred model based on updated oilfield hydrocarbon production data. 
     
     
         30 . The system of  claim 26 , wherein the instructions stored in the computer-readable medium further comprise instructions for applying the updated preferred model to the oilfield well to obtain an updated estimated oilfield hydrocarbon production range of the oilfield well.