Abstract: Pressure drive technology has been widely applied in the enhanced oil recovery of low permeability reservoirs in recent years. This technology improves the oil-water connectivity by injecting working fluid, effectively displacing crude oil. This paper discusses the mechanisms of pressure drive technology and its applications in selecting wells and layers, well pattern design, and optimizing well spacing. It is found that the diamond anti-nine-point pattern is the most effective in early-stage oil recovery, while the rectangular anti-five-point pattern is suitable for later-stage development. In addition, the optimization of injection volume and rate, as well as the combination of various monitoring techniques, is crucial for enhancing pressure drive effectiveness. The study also proposes key indicators for evaluating the adaptability of pressure drive, which can guide the efficient development of low-permeability reservoirs. Read More

Abstract: Ecoflex Silicone rubber with various surface roughness was prepared and subjected to TENG testing with ITO coated with copper foil. Dektak XT was used to test thickness Pa and Pq values for different surface roughness levels. The samples are labelled as Sample_REF, Sample_P1200, Sample_P500, and Sample_P320 respectively according to the different sandpapers used. TENG devices were used to obtain four sets of samples corresponding to the voltage and current of the TENGs with an active area of 2.5cm × 2.5cm will be assessed under a fixed working condition. Finally, the electrical properties of each sample were compared to obtain the relationship between surface roughness and output performance. Read More

Abstract: CO2 injection can improve oil recovery significantly in tight oil reservoirs, in addition, CO2 injection after the use and storage reduce the amount of emissions into the atmosphere, so as to achieve the effect of emission reduction. However, in the process of production and storage, CO2 will interact with crude oil, formation water and rocks and minerals in the reservoir and react, thus changing the reservoir balance and fluid physical properties, resulting in solid phase deposition. Asphaltene deposits have a significant impact on the reservoir, especially on tight reservoirs.In this paper, The effects of asphaltene deposition caused by CO2 injection on oil recovery and CO2 sequestration in tight reservoirs were studied, and the research progress in this field is summarized and prospected. This study can provide reference for the development of tight oil reservoir and promote the development of tight oil recovery technology. Read More

Abstract: The analysis indicates that by this time, the term "model" has already been widely disseminated. Using such models, different process details can be defined to obtain necessary parameters or verify proposed assumptions. It is important to note that modeling does not replace the study of the object; rather, it serves as a supplementary source of information about the reservoir or well, and it is also used in modeling. Read More

Abstract: In view of the problem that the traditional monthly load forecasting method lacks considering the internal load influencing factors, this paper puts forward the monthly load forecasting method considering the industry expansion. On the basis of the similar load development trend, the benchmark value of the planning annual forecast is determined. Then, the basic data of uncertainty and selection factors were collected, and the correlation model affecting the bias of load size factors and the percentage of load deviation was established based on the long-and short-term memory network, and then the benchmark value of monthly load prediction value was corrected. The comparison of the forecast results of considering the actual expansion, the uncorrected expansion and the industry expansion shows that the actual expansion has an important impact on the monthly load and can effectively improve the prediction accuracy. Read More

Abstract: Scientifically optimizing the design of the steam injection pipe network is an important way to improve economic benefits, enhance oil production efficiency, and reduce energy consumption. In the study of the optimal layout of the steam injection pipe network, the operating parameters and operation schemes of the oilfield steam injection system were optimized, and a mathematical model of wet steam flow in dendritic pipelines was established. The genetic algorithm code was written in MATLAB for optimization, and the results were compared with the current steam network layout. The reliability has been proven and can be used as a reference for future pipe network layout studies. Taking the minimum energy consumption loss in the steam injection process as the objective function, an appropriate genetic optimization algorithm was selected to solve the mathematical model for three well parameters. Corresponding constraints and optimization principles were established with the main purpose of reducing energy consumption and improving efficiency. The relevant steam injection parameters were optimized and calculated, and the site of the steam injection station was determined. Read More