In recent years,Deepwater oil and gas resources have become the focus of future global petroleum strategic succession due to the gradual increasing of deepwater oil and gas discoveries in global oil and gas discoveries. In order to better promote the development of deepwater cementing technology in China, we combined field application with indoor research, and a set of low -density full-liquid early-strength cement slurry system suitable for deepwater surface cementing is summarized . The cement slurry system has a simple formulation, adopts full liquid additives , has low cost, and has good rheological property, anti - gas enthalpy performance, sedimentation stability . The strength of the cement stone is good at low temperature, and it has high compressive strength and strong water loss control performance. At present, the low - density all - liquid early - strength cement slurry system has been successfully applied to several deepwater wells in the South China Sea . The field application shows that the system is easy to be prepared , the slurry has good fluidity, few bubbles, and the operation is convenient on site. No shallow gas leakage is found during cementing operations, which meets the requirements of subsequent construction.
Science & Technology Vision
Cement slurry system