Packer fluids

Preservation of a water-based packer fluid. The role of the biocide in a packer fluid is to prevent the degradation of the organic polymer and to prevent the growth of potentially harmful microorganisms once the fluid is in the annular space. The biocide should have long lasting preservative qualities, be compatible with the other components of the fluid, and be tolerate of the conditions it will see once the fluid is in-place. Commonly used biocides include quaternary ammonium compounds, glutaraldehyde and isothiazolone. 

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Packer fluid Packing material Packing parameters Packings... 

Polyacrylic acid, or a water-soluble salt, having a molecular weight of 1500 to 5000, measured on the respective sodium salt and a polydispersity of 1.05 to 1.45, has been described as a dispersant for a drilling or packer fluid [576]. 

D. Farrar, M. Hawe, and B. Dymond. Use of water soluble poljmiers in aqueous drilling or packer fluids and as detergent builders. Patent EP 182600,1992. 

Packer fluids are used to provide hydrostatic balance to partially offset the reservoir pressure and eliminate a large pressure differential across the packer element. TKPP solutions more than meet the requirements of being noncorrosive, nondestructive to elastomers, variable in density, and stable for many years. It is desirable to perforate with a well bore filled with packer fluid so that the packer can be set and the well produced as soon as the perforation operation is complete. Since TKPP solutions make superior perforation fluids, their dual use as a packer fluid is further enhanced. 

Packer fluid - [METALLICCOATINGS - SURVEY] (Vol 16) -bromides as [BROMINE COMPOUNDS] (Vol 4)... 

Use Completion, work-over and packer fluid in oilfield apphcations. 

Requirements for Corrosion Control in the Petroleum and Petrochemical Industries 16 / 6.1.1.5 Problems Related to Packer Fluids... 

One function of the packer fluid is to stabilize and maintain the entrained materials in suspension. This fluid must be of sufficient density to contain the well pressure in the event of a pipe failure. Under long-term, static conditions, detrimental changes may take place that cannot be rectified easily. 

Packer fluids must be conditioned to function for years, because no opportunity is afforded for correction without great expense. Corrosive contaminants, such as carbon dioxide and hydrogen sulfide are produced by bacterial action, thermal degradation, or electrochemical reduction. The fluid placed in the annular space of the well requires careful selection for the assurance of successful and economical completion. 

Saturated salt solutions are commonly used both as drilling and packer fluids. Unsaturated salt solutions are believed to cause more severe corrosion than saturated fluids. Increased solubility of acid gases in the dilute solutions is the basic cause. Inhibitors are recommended for these solutions because corrosion is clearly a problem in highly conductive salt environments. 

The packer fluid system, similar to the automotive coolant, contains a large area of metal in relation to the volume of fluid. However, the system differs in that the packer fluid is de-aerated, static, and contains a high concentration of dissolved solids. 

Organic inhihitors are often used in a packer fluid at high concentrations, so solubility becomes a problem. Solubihty tests must be carried out at an elevated temperature because some organic inhibitors become less soluble as temperature is increased. The pH value at a high concentration should be checked because some highly soluble formulations are acidic. Furthermore, other additives such as bactericides often are included in the packer fluid system, so compatibihty tests also must be considered. 

J. McKennis, N. Bae, M. Kimura, K. Shimamoto, H. Sato 2008. A new chemical mechanistic pos-mlate regarding annular environmentally assisted cracking (ABAC) - Importance of cations and key contaminants in packer fluids in cracking of martensitic stainless steel. NACE - International Corrosion Conference Series, 084831—0848316. 

Uses Corrosion Inhibitor for water floods, packer fluids, producing oil wells, gas wells, pipelines, foamer additives for completion work, wetting agents, surfactants, cleaners, and water treatment... 

Jl can be fed at any point where microbiological growth is a problem. The product is a combination bactericide and corrosion inhibitor for use in treating water in surface equipment, injection wells, packer fluids and drilling muds. 

J2 is also used in packer fluids and drilling muds. 

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