Diagnosis Technology for the Entire Process of Water Production in Producers

The process of producing water flowing from the formation to the wellhead can be divided into three flow stages: reservoir to wellbore, bottom to wellhead, and continuous production data at the wellhead. Describing the flow patterns of the three flow stages clearly can provide a reliable decision-making basis for stabilizing oil and controlling water measures. Therefore, a diagnostic analysis technology for the entire process of water production in oil production wells is proposed, which uses a combination of noise spectrum logging and production logging instruments to measure and collect data for comprehensive interpretation and evaluation, accurately identifying the location of water production and determining the amount of water produced. By mining and analyzing the features of continuous production data, the water-out types are identified. Noise spectrum logging (NTO) can measure the flow of fluid outside the casing and inside the reservoir, effectively identifying signals such as the flow out of casing and reservoir flow, and achieving fluid flow monitoring in the reservoir to wellbore stage. Production logging (PLT) can accurately obtain the fluid type, distribution, and flow rates in the wellbore, accurately obtain the production profile of the perforated intervals, and achieve a quantitative description of the flow state in the wellbore. The water production characteristic discrimination chart determines the water-out types of the oil well (edge water flooding, bottom water flooding, etc.) based on the oil-water relationship characteristics in the production dynamic data. The diagnostic analysis technology for the entire process of water production in oil wells can not only evaluate the current situation of water production, but also summarize and analyze the trend of water production, which can effectively improve the success rate of water control measures.