关键词: 固井, 固井装备, 固井工具, 外加剂, 水泥浆

Abstract: Cementing is an important link in in construction of oil and gas wells. Cementing quality is directly in connection to the service life and work production of oil and gas fields as well as oil and gas wells. Based on development of more than 100 years, foreign cementing technology has a complete system in cementing process, cementing mud and additives, cementing tools and accessories as well as cementing equipment. The domestic cementing technology has experienced a long-term development of imitation, independent research, technological breakthrough and innovation. Rapid progress was made in this area particularly from the 11th Five-Year Period to 12th Five-Year Period. Currently, the high water-cut old oilfields face the new task of how to effectively keep production stable and the new exploration situation, such as deep well, low-permeability, unconventional and oil field. As a result, cement technology should meet the demand for complicated geological conditions, complicated working environment and long-time cement sheath sealing. The in-depth study should be focused on functional cementing materials and tools, informatized and intelligent cementing control, inspection and evaluation integrated system, and full life cycle cementing, thus bringing about industrial modernization and providing powerful engineering technological support for safe and high-efficiency exploration and development of oil and gas resources and unconventional energy.