Design and Operation of Plants for the Preparation of Water for Injection Into Oil Reservoirs
- J. Wade Watkins (Bureau of Mines)
- Document ID
- Society of Petroleum Engineers
- Journal of Petroleum Technology
- Publication Date
- April 1955
- Document Type
- Journal Paper
- 17 - 23
- 1955. Original copyright American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Copyright has expired.
- 4.3.4 Scale, 6.1.5 Human Resources, Competence and Training, 2.4.3 Sand/Solids Control, 5.4.1 Waterflooding, 4.6 Natural Gas, 4.2.3 Materials and Corrosion, 4.9 Facilities Operations, 4.1.2 Separation and Treating
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Both the design of plants in which water is to be treated for subsurface injection and the operation of the plants are important to the success of waterflooding and pressure-maintenance operations. Treating plants should be designed specifically for conditioning of the water or brine to be used in the project. The principal factors to be considered in designing a plant are: (1) characteristics of water to be treated; (2) quality of treated water desired; (3) primary and ultimate capacity of plant; (4) most favorable location of plant site; and (5) type of plant and equipment that will best serve the purpose.
The operation of an injection-water-treating plant is at least as important as the proper design of the plant and judicious choice of treating methods. The important considerations in operating a plant are: (1) qualifications and training of operating personnel; (2) regularity and accuracy of water analyses; (3) analytical equipment and reagents used; and (4) precise control of mechanical equipment.
The design of equipment for the various steps in the treating process are discussed independently in this paper. Criteria for the optimum characteristics of treated water also are given. It is concluded that a particular effort should be made in designing and operating an injection-water-treating plant to minimize corrosion, prevent plugging, and improve the water as a flooding medium.
The choice of design for a plant in which water is to be treated for subsurface injection and the method of operating that plant determine to a large extent the success of an injection project. The efficiency of water treatment and, consequently, the quality of the treated water, will depend directly upon the kind of equipment employed in the plant and the manner in which it is used, as well as upon the chemicals used for treatment. The factors involved in the design and operation of a plant for treating a particular water to the best advantage are discussed in this paper.
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