Software method to select, evaluate, and recommend optimal rod pumping system design used in the extraction of fluids from a downhole well
View Patent ↗A method to select, evaluate and recommend optimal rod pumping system design for a downhole well. The method includes the steps of selecting at least one downhole rod type as a setup preference, selecting at least one pumping unit type as a setup preference, and selecting at least one motor power meter type as a setup preference. Well information, including depth of a pump and run time, is entered as a case input. Additionally, a target production for the well is entered. Records are retrieved from a database wherein the records contain input data on each downhole rod type, each pumping unit type, and each pump motor type. Data is merged from all the case inputs, all of the setup preferences, and from the database records. Scores of gearbox loading, structure loading, system efficiency, rod loading, minimum polished rod loading and bottom minimum stress are calculated and then combined to determine a calculated percentage score for each pumping unit type for the downhole well.
1. A method to select and evaluate optimal components for installation and operation of a rod pumping system for a downhole fluid well, which method comprises:
selecting at least one downhole rod type as a setup preference;
selecting at least one pumping unit type as a setup preference;
selecting a motor power meter type as a set up preference;
entering well information including depth of pump and run time as a case input;
entering a target production for said well as a case input;
retrieving records from a database wherein said records contain input data on each said downhole rod type, each said pumping unit type, and each said pump motor type;
merging data from all said case inputs, from all said setup preferences, and from said database records;
calculating individual scores of gear box loading, structure loading, system efficiency, rod loading, minimum rod load, and bottom minimum stress; and
combining said individual scores to determine a calculated percentage score for each said pumping unit type for said rod pumping system.
2. A method as set forth in claim 1 including an additional step of selecting an average tubing friction coefficient or a multiple average rod-tubing coefficient.
3. A method as set forth in claim 1 wherein said at least one downhole rod type includes steel rods or fiberglass rods with steel rods on bottom.
4. A method as set forth in claim 1 wherein said step of selecting at least one pumping unit type includes up to eight different choices.
5. A method as set forth in claim 1 wherein said step of selecting at least one pumping unit type includes designating pumping units by manufacturer.
6. A method as set forth in claim 1 including the additional step of selecting at least one default setting chosen from the group consisting of a compressibility index, electricity costs, and standard sucker rod length.
7. A method as set forth in claim 1 wherein said at least one type of power meter for said motor includes detent motors and non-detent motors.
8. A method as set forth in claim 1 wherein said step of entering a target production for said well includes entering a production rate in barrels per day or entering IPR data for said well.
9. A method as set forth in claim 1 including the additional step of predicting electricity consumption for each said pumping unit type.