Plastic ball lubricant is also a cross-linked copolymer of styrene and divinylbenzene. It is a transparent translucent white plastic ball with particle size of 0.1-2.0 mm and softening point of 200 ℃. It has elasticity, anti extrusion, no foaming, no abrasiveness and no abrasion. No fluorescence, insoluble in water, oil, acid and alkali. It is inert in drilling fluid and does not react with any other components. It is nontoxic, harmless to human and livestock, and does not pollute the environment.
Anti sticking mechanism of plastic balls in oilfield drilling: the plastic balls are distributed in the drilling fluid and adhere to the wellbore when mud cake is formed, resulting in many "micro bearings", thus changing the contact mode between drilling tools and wellbore, from "face contact" to "point contact", so as to achieve the purpose of reducing drag and lubricating anti sticking.
The solid lubricant (plastic ball) for drilling fluid is a cross-linked copolymer of styrene and divinylbenzene. It is a transparent translucent white plastic ball with particle size of 2.0 mm-0.154 mm and softening point of 200 ℃. It has elasticity, anti extrusion, no foaming, no abrasiveness and no abrasion. No fluorescence, insoluble in water, oil, acid and alkali. It is inert in drilling fluid and does not react with any other components. It is nontoxic, harmless to human and livestock, and does not pollute the environment.
Lubrication and anti jamming mechanism:
The product can be evenly suspended in the drilling fluid. When the mud cake is formed, it adheres to the wellbore and produces many "micro bearings". Therefore, the contact mode between the drilling tool and the wellbore is changed from "face contact" to "point contact", so as to achieve the purpose of drag reduction, lubrication and anti sticking.
Controlling
parameters：
Maintenance and management:
1. In the process of use, the product is added according to the designed amount of oil well, and added according to the cycle cycle through the hydraulic mixing funnel, which can effectively make the plastic balls evenly distributed in the drilling fluid.
2. Try to avoid bringing in too many dirty debris and polluting drilling fluid during operation.
Appearance Free flowing sphere
Divinylbenzene content% 4-7
Water content% ≤1
softening point ≥200℃
Density g / cm 3 1.02-1.03
Sphericity% ≥95
Packaging, storage and shelf life:
25kg plastic woven bag; 25kg three in one kraft paper bag; 50 pound valve mouth paper bag or 750KG ton bag; placed in a dry and cool place to prevent spillage; normal temperature shelf life of more than 10 years.
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