Oil as a strategic energy at present, has play a decisive role position in economic and military field for national. At present, the chemical treatment agent for drilling and production at home and abroad actively developed and developing all kinds of new, efficient, non-toxic and multi functions, the development direction of product performance, quality, technical level actually represents the level of drilling technology. With the progress of science and technology, the processing agent from the past single inorganic to the present development of multifunctional organic polymer. The organic compounds including water soluble polymer.
Water soluble polymer in the oil and gas industry, a wide range of uses, from the seventy's to the current usage almost doubling every ten years in a rate of increase. Now, the whole world for oil, gas and water soluble polymer is a total of more than 150000 tons.
They will be the main filtration reducing agent, thickening agent, dispersing agent, flocculant, mobility control agents, drag reduction agent for completion, cementing, acidizing, fracturing, extraction of three times. Commonly used are water-soluble polymer polyimide, polyacrylamide, sodium polyacrylate, cellulose, xanthan gum.
But for the Polyvinyl Alcohol (PVA) applied research and reports in oil less, limit the application of Polyvinyl Alcohol in this field.
Polyvinyl Alcohol has excellent stability, crosslinking performance, thickening properties and degradability and so on, can be widely used in oil fields, for example, can be used as thickening agent in water, can be used as thickening acid additives liquid delay and rock effects and to reduce acid loss; with the crosslinking agent used to mixed with the cement used for cementing, fracturing fluid and plugging.
1. PVA as filtrate reducer for cement slurry
PVA can be used in the production of oil well cement slurry filtrate reducer, joined together with cement and other additives for oil well cement, latex cement system. Latex cement admixture system is to achieve good water slurry performance, one of the effective methods to assure the cementing quality, protect the oil and gas well productivity.
2. PVA as drilling mud anti sloughing agent
As drilling mud anti sloughing agent: in the deep strata of shale, by overburden pressure, the horizontal stress and the formation pore pressure, when after drilling, destroy the original balance of formation stress, leading to re distribution of stress around the borehole.
Water soluble polymer in the oil and gas industry, a wide range of uses, from the seventy's to the current usage almost doubling every ten years in a rate of increase. Now, the whole world for oil, gas and water soluble polymer is a total of more than 150000 tons.
They will be the main filtration reducing agent, thickening agent, dispersing agent, flocculant, mobility control agents, drag reduction agent for completion, cementing, acidizing, fracturing, extraction of three times. Commonly used are water-soluble polymer polyimide, polyacrylamide, sodium polyacrylate, cellulose, xanthan gum.
But for the Polyvinyl Alcohol (PVA) applied research and reports in oil less, limit the application of Polyvinyl Alcohol in this field.
Polyvinyl Alcohol has excellent stability, crosslinking performance, thickening properties and degradability and so on, can be widely used in oil fields, for example, can be used as thickening agent in water, can be used as thickening acid additives liquid delay and rock effects and to reduce acid loss; with the crosslinking agent used to mixed with the cement used for cementing, fracturing fluid and plugging.
1. PVA as filtrate reducer for cement slurry
PVA can be used in the production of oil well cement slurry filtrate reducer, joined together with cement and other additives for oil well cement, latex cement system. Latex cement admixture system is to achieve good water slurry performance, one of the effective methods to assure the cementing quality, protect the oil and gas well productivity.
2. PVA as drilling mud anti sloughing agent
As drilling mud anti sloughing agent: in the deep strata of shale, by overburden pressure, the horizontal stress and the formation pore pressure, when after drilling, destroy the original balance of formation stress, leading to re distribution of stress around the borehole.