Shanxi Xin Jian Industry Co., Ltd Share: each level range for oil well cement as follows: A grade: in the absence of specific performance required for 1 830 m from the ground to the depth of cementing. Just ordinary. Class B: suitable for downhole conditions require the use of high early strength for 1 830 m from the ground to the depth of cementing. Into anti-sulfate and high sulfate resistant type of two types. Oil well cement for use in downhole conditions require high early strength when applied from the ground to the depth of 1 830 m cementing: Level C. Divided into common type, anti-sulfate and high sulfate resistant three types. D Grade: suitable for use in downhole temperature and pressure conditions Witton oil well cement, into anti-sulfate and high sulfate resistant type of two types. E Grade: suitable for high temperature and pressure conditions were used into anti-sulfate and high sulfate resistant type of two types. Grade F: when suitable for ultra-high temperature and pressure conditions were divided into anti-sulfate and high sulfate resistant type. Class G, H level: a basic well cement, into anti-sulfate and high sulfate resistant types. J Grade: for 3 660 ~ 4 880 m depth at ultra-high temperature and pressure conditions of the cementing. The physical properties of oil well cement requirements include: water-cement ratio, specific surface of cement, 15 ~ 30 min consistency within the initial wells cement plant, thickening time at a specific temperature and pressure and at a specific temperature, pressure and curing age Compressive strength Witton Cement Group Co., Ltd. to share: There are two oil well cement cement production technology production methods: one is to create a specific mineral composition of clinker to meet the chemical and physical requirements of a grade cement; another Species are added using the corresponding basic well cement additives meet the technical requirements of grade cement. The second method is now commonly used. The physical properties of oil well cement requirements: include: water-cement ratio, the pressure steam stability (swelling value of less than 0.8%), the cement surface area, initial consistency within 15-0min, thickening time at a specific temperature and pressure (high temperature high pressure consistometer measured) and curing period at a specific temperature and pressure. Shanxi oil well cement, oil well cement, cement provided by Witton Witton Cement Group LLC. Witton Cement Group Co., Ltd. (www.sxwdgs.com/) strong, credible, Shanxi Yuncheng cement products and other industries and has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Witton cement into the brilliant and you work for a better future!