With the rapid development of the petroleum industry, the demand for oil well cement in oil and gas well cementing projects has also continued to rise. Especially because of deeper well depth and poor geological conditions, the demand for low-density oil well cement is even more urgent. The most common method of making low-density cement slurry is to increase the water content or add highly absorbent substances such as diatomaceous earth and perlite. However, the increase in water content will reduce its strength, and the cement permeability after setting is high, resulting in low compressive strength of cement, and the density of cement is reduced to 1.5g / cm³that be unable to provide long-term interlayer isolation. Hollow glass microspheres have low density, high strength and no water absorption, which has been popular in recent years in the application of low-density cement, especially ultra-low density cement slurry in ultra-deep wells, high temperature, long sealing and balanced pressure cement In terms of aspect, hollow glass beads have an irreplaceable advantage. In the early 1970s, the United States first began to develop hollow glass microspheres as a lightening agent to reduce the density of oil well cement pastes. It was successful in 1980 and the patent for "Hollow Glass Microspheres Low Density Cement" was obtained the following year. Since then, this new technology has been widely used in oil-producing countries all over the world, and achieved significant results.
The related products: Low-density cement slurry
The recommended models: 38P5500, 46P8000,60P12000