Physical foam cementing concrete

Abstract

The invention discloses a physical foam cementing cement comprising foam medias and cement slurries and the weight mixing ratio of the foam medias and the cement slurries is 1:10 to 30, wherein, the components of the foam medias comprise a foaming agent stock solution and clear water, and the weight mixing ratio of the foaming agent stock solution and the clear water is 1:10 to 30. The invention forms air chambers of the internal structure of cement stones, which are spherically, independently and uniformly distributed, and the physical foam cementing cement has the advantages of excellent light quality, small density difference, stable slurry and good environmental protection performance.

Description

technical field [0001] The invention relates to the technical field of physical foam cementing cement suitable for oil and natural gas exploration and development. Background technique [0002] In the process of oil and gas exploration and development, the research and application of cementing light cement slurry system is an important topic of technical research at home and abroad, and physical foam cementing cement is the focus of light cement slurry system research. [0003] At present, the chemical foaming method is widely used in China to manufacture physical foam cementing cement. Because the chemical foaming method is affected by many factors such as temperature, pressure, mixing uniformity of the foaming agent, and foam volume uniformity, the formed cement stone structure is homogeneous. The chemical foaming method has high cost, low input and output ratio, and poor economic benefits. SUMMARY OF THE INVENTION [0004] In order to solve the above technical problems...

AI Technical Summary

Problems solved by technology

[0003] At present, the chemical foaming method is generally used to manufacture physical foam cementing cement in China. Because the chemical foaming method is affected by many factors such as temperature, pressure, foaming agent mixing uniformity, and foam volume uniformity, the cement stone structure formed is homogeneous. Poor degree and low compressive strength; and the cost of chemical foaming method is high, the ratio of input to output is low, and the economic benefit is poor