<p>Yinger Depression Block A is rich in reserves, due to this type of reservoir is dense, low permeability, belongs to low permeability tight oil reservoir type, and the original formation energy in the study area is insufficient, the production decay is fast in the actual development process, and the degree of recovery is low, the development effect of the field is significantly improved by using water injection and throughput, but the mechanism of water injection and throughput to increase the production is still not clear, so the study of the mechanism of the role of the various factors in increasing production capacity is important for the guidance of the development of the oil field. Therefore, it is of great significance to study the mechanism of various factors to increase production capacity to guide oilfield development. In this paper, we take the long 2 reservoir in Yinger Depression Area A as the research object, and through indoor water injection and throughput experiments in the tight reservoir, we reveal the influence of the main controlling factors on the effect of water injection and throughput and the effect of production increase. The results show that the study area has low natural energy, strong non- homogeneity and weak hydrophilicity, and the adoption of water injection and throughput technology to drive oil can effectively achieve a higher recovery rate. The basic physical properties and wettability of the reservoir in the study area are the key factors affecting the production effect of water injection and throughput. The injection volume and the injection rate mainly affect the degree of formation energy recovery and thus the reach of the injected water; the time of well curing and the recovery rate mainly affect the degree of seepage and absorption of the injected water. The cycle injection volume has the greatest influence on the throughput effect, followed by the injection rate and well curing time, and the recovery rate has the least influence on the throughput effect.</p>