The ninth oil production plant of Daqing Oilfield controls the decline in the old area "due to the policy of Tibet"

In the first two months of this year, the ninth oil production plant of Daqing Oilfield used diversified means to continuously strengthen the potential of the old area, and crude oil production increased by 195,000 tons year-on-year.

The geological conditions of oil reservoirs developed by No. 9 Oil Production Plant are complex and changeable, including medium permeable oil fields with simple oil-water relationship and good physical property, and extremely low permeable oil fields with complex oil-water relationship and developed fractures. With the deepening of oilfield development, the production decline rate of all kinds of oil reservoirs has gradually accelerated. How to effectively control the production decline has become the direction of continuous research in the ninth oil production plant.

The ninth oil production plant according to the "due to the reservoir policy, the combination of normal" idea, for different types of oil reservoirs, "the right medicine". In conventional oil development, according to the reservoir physical property, fracture development degree, sand body connectivity degree and development well type, technicians take targeted water drive potential exploitation measures for different types of reservoirs. Through the injection and production end adjustment, the natural decline rate of old Wells continues to decrease, and the reservoir utilization degree is effectively improved.

The oil production plant No. 9 has rich tight oil reserves and poor reservoir physical properties, and has achieved good development results in the early stage, but due to the use of natural energy development, there is no external energy supplement, resulting in rapid decline. The ninth oil production plant carried out research on multi-medium energy supplement technology, selected the most suitable medium system for injection, optimized the key injection parameters, and formed a set of tight oil energy increase and production technology. At the same time, technical research is carried out for thin and differential reservoir reserves, and the iterative optimization of fracturing technology is promoted to promote the rapid conversion of difficult tight reserves to production.