The Commonly Used Drilling Fluid Additives - Polyacrylamide
Drilling is a systematic engineering, which is a joint operation of multi specialty and multi type of work, using a variety of equipments, tools and materials. At the same time, it is a continuous operation with many procedures and links closely linked. In the actual operation process, it is necessary to add drilling fluid additives to facilitate the flow of the drilling fluid.
As a drilling fluid additive, polyacrylamide is used as a drilling mud performance modifier in oil exploitation. The role of polyacrylamide is to adjust the rheology of the drilling fluid, carry cuttings, lubricate the drill bit, and facilitate drilling. In addition, it can greatly reduce sticking accidents, reduce equipment wear, and prevent leakage and collapse, so that the well diameter can be regulated.
This drilling fluid additives has two states: solid and emulsion. The solid polyacrylamide is white granular, the solid content is more than 90%, and the dissolution time is less than 60 minutes; the polyacrylamide emulsion is viscous liquid, the solid content is more than 30%, the dissolution time is less than 5 minutes, and the hydrolysis degree is less than 40%.
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