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Information Seminar Paper

Title

PREDICTING SCALE FORMATION IN THE WATER INJECTION PROCESS BY COMMERCIAL SOFTWARE OLI

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Abstract

 INJECTION WATER AS ONE OF THE KNOWN METHODS HAS MANY APPLICATIONS IN THE OIL INDUSTRY EITHER AS PRESSURE KEEPER OR AS ENHANCED OIL RECOVERY METHOD. ONE OF THE MAIN PROBLEMS IN WATER INJECTION PROCESSES IS INCOMPATIBILITY PROBLEM OF INJECTION WATER WITH FORMATION WATER. IT CAUSES DEPOSITIONS THAT HAVE GREAT EFFECTS ON THE WATER INJECTION PROCESS. SO, PREDICTING LIKELY DEPOSITIONS IS VERY IMPORTANT AND HAS MANY ECONOMIC BENEFITS. IN THIS STUDY, COMPATIBLY BETWEEN FORMATION WATER OF ONE OF THE IRANIAN OIL FIELDS AND INJECTION WATER WHICH IS A CANDIDATE FOR MAINTAINING PRESSURE IN THE RESERVOIR WERE EXAMINED BY COMMERCIAL SOFTWARE OLI. SO, PROBLEMS DUE TO SCALE FORMATION WERE PREDICTED BEFORE PERFORMING THE WATER INJECTION OPERATIONS. IN THIS SOFTWARE, VARIOUS PHYSICAL CONDITIONS THAT WATERS ARE FACING WITH THEM AND DIFFERENT RATIOS OF INJECTION TO FORMATION WATER WERE EXAMINED. RESULTS SHOWED THAT THERE WAS THE POSSIBILITY OF PRECIPITATION OF STRONTIUM SULFATE AND CALCIUM CARBONATE IN RESERVOIR CONDITIONS AND STRONTIUM SULFATE, CALCIUM CARBONATE, AND BARIUM SULFATE IN ATMOSPHERIC CONDITIONS. ALSO, THERE WAS SOME IRON SULFIDE DEPOSIT THAT IT WAS NEGLIGIBLE. SO, CORROSION IS NOT IMPORTANT IN THE CANDIDATE WATER INJECTION PROCESS. SINCE THE AMOUNT AND VARIETY OF COMPOSED SEDIMENTS WERE LITTLE, THE CANDIDATE WATER IS GOOD FOR WATER INJECTION OPERATION INTO THE EXAMINED OIL RESERVOIR.

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