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00106 THE USE OF SCALE INHIBITOR SQUEEZE PLACEMENT SOFTWARE TO EXTEND SQUEEZE LIFE AND REDUCE OPERATING COSTS IN MATURE HIGH TEMPERATURE OILFIELDS

Picture for 00106 THE USE OF SCALE INHIBITOR SQUEEZE PLACEMENT
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Product Number: 51300-00106-SG
ISBN: 00106 2000 CP
Author: M. M. Jordan, K. Sjuraether, G. Seland, H. Gilje
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This paper presents field results from scale squeeze treatments carried out on platform wells from two high temperature (143C to 150C) fields in the Norwegian sector of the North Sea. Scale control and the resulting squeeze treatments to production wells were highlighted as one of the most expensive items in the production chemical budget. The development of a cost-effective squeeze policy was critical to reduce the operating cost of these assets as the produced water cut rose. Computer simulation software was utilised to allow economic and practical evaluation to be carried out prior to deployment of inhibitor treatments in the field. The use of this software allowed optimization of the squeeze treatments in terms of volume of water treated, cost of chemical and duration of injection. The associated costs such as deffered oil/artificial lift were all be taken into account based on the computer simulation results. This paper will outline the practical difficulties encountered when selecting and deploying scale inhibitors in this type of asset and how some of these practical problems can be overcome. Field data from the scale squeeze treatments will be presented and compared to the computer simulation predicted lifetimes. Possible cost savings will be presented by using software as part of an integrated total cost scale management (TCSM) solution where cost of scale control/removal is critical to the economic feasibility of the assets as they mature.
This paper presents field results from scale squeeze treatments carried out on platform wells from two high temperature (143C to 150C) fields in the Norwegian sector of the North Sea. Scale control and the resulting squeeze treatments to production wells were highlighted as one of the most expensive items in the production chemical budget. The development of a cost-effective squeeze policy was critical to reduce the operating cost of these assets as the produced water cut rose. Computer simulation software was utilised to allow economic and practical evaluation to be carried out prior to deployment of inhibitor treatments in the field. The use of this software allowed optimization of the squeeze treatments in terms of volume of water treated, cost of chemical and duration of injection. The associated costs such as deffered oil/artificial lift were all be taken into account based on the computer simulation results. This paper will outline the practical difficulties encountered when selecting and deploying scale inhibitors in this type of asset and how some of these practical problems can be overcome. Field data from the scale squeeze treatments will be presented and compared to the computer simulation predicted lifetimes. Possible cost savings will be presented by using software as part of an integrated total cost scale management (TCSM) solution where cost of scale control/removal is critical to the economic feasibility of the assets as they mature.
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