In oil production, fracturing technology is one of the important measures to improve oil production and reserves. In order to achieve the purpose of increasing production, every oil well in the oilfield needs to be fractured, and some oil wells even need to be fractured many times.

Generally, 4-5 fracturing trucks operate in the downhole oil layer to form a fracture, and the oil flows to the fracturing site, so as to achieve the purpose of oilfield production increase. During fracturing operation, the fracturing water outlet needs to bear the pressure that can crush the formation. The pressure it bears can be increased after sealing with valve insert. Therefore, the quality of valve insert seal can directly affect the time of continuous fracturing operation.

The working time of the valve insert used by the fracturing truck is only dozens of days, and the failure in one of the products will lead to the failure of the whole fracturing operation and great economic losses. High performance polyurethane valve insert is expensive and depends on imports. At present, the domestic products have a short service life, which is difficult to meet the requirements of continuous fracturing operation.

JST has developed a kind of polyurethane rubber with high hardness, high strength and high wear resistance. This material has superior properties, high wear resistance, low compression set, excellent high and low temperature resistance, and is suitable for the production of valve rubber for downhole fracturing operations in oil fields.

Many internal defects caused by manual pouring are avoided by turning production process. The internal structure rules of the product ensure the dimensional accuracy and service life of the product to a great extent. It can complete the fracturing operation of 6-7 oil wells.

It is suitable for high pressure, high temperature, high sand ratio, high displacement and other fracturing conditions faced by the current oilfield.