Since“The Twelfth Five-Year Plan in 2011-2015，”to implement the deep integration of informatization and industrializa‐tion and accelerate digital transformation，common issues in mature oil and gas fields have been analyzed，such as high production costs，significant labor conflicts，and low operational efficiency. To address these issues，the Oilfield Exploration and Production Department of Sinopec combined pilot constructions in Shengli Oilfield and the institutional mechanism construction of oil compa‐nies and organized oil and gas field enterprises to expedite the digital and intelligent construction in oil and gas production. As a re‐sult，a standard system for the industrial Internet of Things in oil and gas production was established，and production parameter soft measurement technology based on dynamic and static data was developed. Breakthroughs were made in anomaly recognition and op‐erational optimization technology based on big data. The department independently developed a fully localized oil and gas produc‐tion informatization platform with first-level deployment that integrated all elements，effectively solving problems such as inconsis‐tent standards in the informatization construction of mature oil and gas fields，high overall investment，difficulties in efficient min‐ing and utilizing the value of massive real-time data，and the dispersed construction of production，operation，and command plat‐forms that hindered the realization of large-scale benefits. This has formed a low-cost，standardized，and scalable solution for the digital and intelligent construction of oil and gas fields and established new production operation models and labor organization methods under digital and intelligent conditions，which have been fully industrialized and applied in Sinopec’s oil and gas field en‐terprises，showing significant results. The results indicate that the digital and intelligent construction and practice of oil and gas pro‐duction are effective ways to achieve the digital transformation and high-quality development of mature oil and gas fields，playing a key supporting role in promoting the transformation of production and operation models and labor organization methods in oil and gas field enterprises，improving labor productivity，enhancing fine management levels，and increasing production operation effi‐ciency. Since“The Thirteenth Five-Year Plan in 2016-2020”，the labor productivity of Sinopec’s oil and gas field enterprises has in‐creased by 91%，and the production time rate of oil wells has increased by an average of 0.4 percentage points；maintenance fre‐quency has decreased by 0.13，and the natural decline rate of oil fields has decreased by 2.4 percentage points，achieving unmanned or less manned operations at oil and gas production sites，strongly supporting the reform and development of oil companies and lay‐ing the foundation for the construction of intelligent oil and gas fields.