The Shengtuo oilfield is the largest monolithic oilfield in the Bohai Bay Basin and even in the continental fault basins of Eastern China.Since discovered in 1963,the Shengtuo oilfield experiences the early exploration stage of rapid reserve discovery and production,the middle exploration stage of high and stable production and development,and the late exploration stage of theoretical and technological innovation for expanding the field of exploration,research on fine development technology of high-water-cut reservoir for enhanced oil recovery,and maintaining slow decline of oil production.Re-serves of this oilfield increase in each stage.By the end of 2018,after more than 50 years of exploration and development,the Shengtuo oilfield has cumulative proven oil reserves of 0.512 × 109t,cumulative oil production of 0.193 × 109t,and it keeps stable annual production of more than 1.50 × 106t in 2018.Abundant hydrocarbon resources,large anticline structure near to oil source,multiple types of reservoirs and traps,and favorable hydrocarbon migration channels provide favorable hydrocarbon accumulation conditions for the Shengtuo oilfield.Fine development techniques such water-flooding in the early development stage,fine reservoir description in the high water-cut stage,stratigraphic subdivision and well pattern vector adjustment,tapping remaining oil in rhythmic layers,etc.,as well as continuous progress in exploration technologies of glutenite and turbidite reservoirs around the main body of the oilfield in the high-level exploration stage,provide effective supports for continuous increase of reserves and long-term high and stable production of the Shengtuo oilfield.
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