Intelligent Recognition Method of Insufficient Fluid Supply of Oil Well Based on Convolutional Neural Network

Traditional methods for judging the degree of insufficient fluid supply in oil wells have low efficiency and limited accuracy. To address this problem, a method for intelligently identifying the degree of insufficient fluid supply in oil wells based on convolutional neural networks is proposed in this paper. Firstly, 5000 indicator diagrams with insufficient liquid supply were collected from the oilfield site, and a sample set was established after preprocessing;then based on the AlexNet model, combined with the characteristics of the indicator diagram, a convolutional neural network model including 4 layers of convolutional layers, 3 layers of down-pooling layers and 2 layers of fully connected layers is established. The backpropagation, ReLu activation function and dropout regularization method are used to complete the training of the convolutional neural network;finally, the performance of the convolutional neural network under different iteration times and network structure is compared, and the super parameter optimization of the model is completed. It has laid a good foundation for realizing the self-adaptive and intelligent matching of oil well production parameters and formation fluid supply conditions. It has certain application prospects. The results show that the accuracy of training and verification of the method exceeds 98%, which can meet the actual application requirements on site.

Insufficient Labor Supply and Wage Rises under Conditions of Labor Surplus:From the Perspective of the Intra-household Division of Labo

On the basis of Becker＇s family economics and the theory of time allocation, it can be shown that labor supply under labor surplus conditions is not unlimited. Under the constraints of intra-household labor division, the supply curve takes on a special staircase form： as labor supply increases, the reservation wage of rural labor rises by an ever larger margin. The response of labor supply to wages is discontinuous. Labor supply will increase only when wages reach the new level of the reservation wage; otherwise, wage increases do not lead to an increase in labor supply. Corresponding to this special form of supply, the major driving force behind wage increases becomes industrial labor demand rather than agricultural income. The data from a survey of about 1,500 rural households in Gansu and Inner Mongolia bear out the above proposition. When labor demand rises, slight wage adjustments will not bring a corresponding increase in labor supply and labor market clearing will not occur for a long time. This reminds us that the present coexistence of a shortage of labor with wage rises for migrant workers may well derive from insufficient labor supply under labor surplus conditions. It does not necessarily imply the exhaustion of the labor surplus and cannot serve to prove the arrival of the Lewis turning point.

Effective Supply,Consumption Upgrade,and Expanding Domestic Demand

Addressing the prolonged stagnation in household consumption growth in China is crucial for the successful implementation of the strategy to expand domestic demand.By constructing the upgrading index of consumption structure from 2002 to 2018,it is found that the overall upgrading trend of household consumption structure in China is accelerated after 2014.Theoretical analysis and empirical results indicate that,as household consumption structures rapidly upgrade with rising incomes in China,the primary factor limiting reasonable growth in household consumption is the insufficient effective supply resulting from a mismatch between the supply structure and the demand structure.As the adjustment of the supply structure depends on the continuous optimization of investment flow,expanding effective investment is the key driving force to improve effective supply,and it is also the existing component of expanding domestic demand.Further research shows that weakening investment convergence can significantly alleviate the insufficient effective supply caused by consumption upgrading.Enhancing the scientific anticipation of policy regulations and increasing the effectiveness of investments will be beneficial for realizing the strategy of expanding domestic demand.