Abstract: To address the development challenges of low-permeability, tight, and unconventional oil and gas reservoirs in the Ordos Basin and support the strategy of “stabilizing oil production and expanding gas output”, the key advancements in oil and gas engineering technologies achieved by Yanchang Petroleum during the “14th Five-Year Plan” period were systematically reviewed, and future development directions were proposed. During the “14th Five-Year Plan” period, through engineering technology innovation, Yanchang Petroleum has developed and scaled up the application of new technologies such as shallow and ultra-shallow horizontal wells in oilfields, optimized fast drilling in large well clusters, CO₂ hybrid fracturing, intelligent intermittent oil production, and refined dewatering gas production, etc. As a result, the drilling cycle has been shortened by 33.78%; fracturing productivity has increased by over 50%, and mechanical oil production has achieved single-well electricity savings of 20%–48%. The application of these new technologies has effectively increased oilfield recovery rates by 2.03% and boosted gas field production by over 10%, supporting the breakthrough of 2 000×10⁴ t of oil and gas equivalent by the end of the “14th Five-Year Plan”period. Currently, Yanchang Petroleum faces challenges such as maintaining stable production in old areas, deep-layer development, and intelligent transformation. In the future, it will deepen the research and development of technologies such as intelligent guided drilling, CCUS integration, and full lifecycle water drainage and gas production, so as to facilitate Yanchang Petroleum’s low-carbon intelligent transformation and sustained stable production.