中国石油固井技术进展及面临的问题

Problems Facing CNPC Well Cementing Technological Development

固井是石油工程技术领域的一个重要环节。经过多年攻关,中国石油固井技术取得了长足进步,基本形成了系列配套的固井材料、固井工具及相应的固井工艺技术。近年来,中国石油在深井超深井、水平井及大位移井、大温差长封固段一次上返固井方面取得了重要进展;超高密度及超低密度水泥浆、胶乳水泥浆、韧性膨胀水泥浆等在现场应用中取得了良好效果;常规固井工具及附件已经成熟,尾管悬挂器及自膨胀材料方面取得突破;固井装备实现了更新换代,固井质量智能化控制取得初步进展。由于油气勘探开发的对象日益复杂,下一步还需要在复杂超深井、复杂天然气井、储气库井、非常规油气及低温深水固井等方面开展深入的研究工作,为油气增储上产提供强有力的工程技术支撑。

Cementing is an important link in the area of petroleum engineering technology. Based on the research efforts in the past years, CNPC has made great progress in cementing technology, basically establishing a system of cementing materials, cementing tools and related cementing process technology. In recent years, CNPC has made important achievements in cementing technology for deep and ultra-deep wells, horizontal wells, extended reach wells and long section with large temperature difference. Good results have been achieved in field application of cement slurry with ultrahigh density and ultra-low density, latex cement slurry, and elastic slurry. Conventional cementing tools and accessories are brought under maturity with breakthroughs made in liner hanger and swelling materials. Cementing equipment is updated while initial progress is made in intelligent cementing quality control system. As the targets of oil and gas exploration and development are increasingly complicated, the research efforts at the next stage should be focused on cementing of complex ultra-deep wells, complex natural gas wells, gas-depot wells, non-conventional oil and gas wells and lowtemperature deepwater wells, providing effective engineering technological support for higher oil and gas reserves and production.