胜利油田“十四五”勘探形势与发展战略

Exploration situation and development strategy of Shengli Oilfield during“14th Five-Yearplan in 2021-2025”

经历60余年的勘探开发,作为胜利探区增储主体的济阳坳陷富油凹陷中浅层及准噶尔盆地西缘超剥带的常规油气已处于成熟勘探阶段,勘探目标日趋复杂隐蔽,规模增储难度持续增加,亟需加强勘探形势研判与资源潜力评价,制定针对性勘探发展战略,保障胜利油田勘探可持续发展。通过开展胜利探区东西部勘探状况与勘探形势梳理,资源潜力及增储领域分析,明确了其剩余资源潜力与有利勘探方向,认为胜利探区仍具有可持续发展的资源基础,其中深层-超深层具有规模增储的资源潜力,外围低勘探程度区具有较大的勘探潜力,非常规油气是现实的资源接替领域;提出了实施“类型上由常规为主向常非并重转变、层系上由中浅层向深层-超深层转变、区域上由老油区向全探区综合勘探转变”的“三大勘探战略转变”,制定了“立足全区、决胜深层、常非并重、统筹推进”的勘探发展思路;提出了“坚持低勘探程度区攻坚实现新突破、坚持深层-超深层探索形成规模增储新阵地、坚持常非并重实现稳定增储、坚持高效管理推进勘探高质量发展”的发展路径,为胜利油田勘探高质量发展指明了方向,也为渤海湾盆地、准噶尔盆地类似探区的勘探提供了思路和方向借鉴。

After more than 60 years of exploration and development,the conventional oil and gas in the middle and shallow layers of the oil-rich sag in Jiyang Depression and in the ultra-denudation zones at the western edge of Junggar Basin have been in the mature exploration stage,which are the main body of reserve increase in Shengli exploration area.The exploration targets are becoming increasingly complex and subtle,and the difficulty of large-scale reserve increase continues to rise.It is urgent to strengthen the research and judgment of the exploration situation and resource potential evaluation,formulate targeted exploration and development strategies,and ensure the sustainable development of exploration in Shengli Oilfield.The exploration condition and situation resource potential,and areas with reserve increase were analyzed,and the remaining resource potential and favorable exploration directions were clarified in the eastern and western parts of Shengli exploration area.It was believed that Shengli exploration area still had a resource foundation for sustainable development,with deep and ultra-deep layers having the potential for large-scale reserve increase,peripheral low exploration areas having greater exploration potential,and unconventional oil and gas being the real resource replacement field.The implementation of the“three major exploration strategy transformations”was proposed,which included a shift from conventional oil and gas focus to equal emphasis on both conventional and non-conventional oil and gas in types,a shift from middle and shallow layers to deep and ultra-deep layers in stratigraphic systems,and a shift from mature oil ar‐eas to comprehensive exploration of the whole exploration area in the regions.An exploration development strategy of“focusing on the whole area,successfully exploring deep layers,emphasizing both conventional and non-conventional oil and gas,and implementing coordinated promotion”was developed.The development path was proposed of“persisting in tackling difficulties in low exploration areas to achieve breakthroughs,continuing deep and ultra-deep layer exploration to form a new position for large-scale reserve increase,emphasizing both conventional and non-conventional oil and gas to achieve stable reserve increase,and maintaining efficient management to promote high-quality exploration development”,which pointed out the direction for high-quality exploration development of Shengli Oilfield and provided ideas and directions for exploration in similar exploration areas in Bohai Bay Basin and Junggar Basin.