Yan Chang Gas Field Row Selection And Injection Foam Agents Methods

Yan chang gas field yan qi 2~yan 128 gas reservoir boundless, bottom water, gas reservoirs rely mainly on the elastic energy of formation fluid drive, from the current development characteristics, the gas well productivity condensate water to water-based movable internal waters and layers. With the continued development of gas fields and the use of a higher level of reserves, gas reservoirs out of water and increasing the number of water wells, wellbore fluid and water and other issues affecting the normal production gradually.In order to achieve the goal of controlling water stable gas for gas drainage gas for low cost requirements, to fully draw on the experience o drainage gas block Sulige gas field,immediate early research Foam drainage gas technology for the field need. In this paper, based on original research on oil, gas effluent to the effluent gas dynamics and mechanism to conduct a comprehensive investigation, and regularity of the mechanism of gas produced effusion in the production process, on the basis of the static and dynamic characteristics for gas, to carry out water quality assessment, bubble row pharmaceutical research, technology research system construction bubble discharge mode is preferred, optimization of process parameters and process test site, to provide evidence and guidance for the application of foam drainage gas bubble discharge process optimization and technology with liquid gas wells during production.Aiming to extend the gas effluent characteristics and formation water analysis, features a brief analysis of the effluent gas, a clear focus on drainage technology application layers and formation water type; then, for the extension of the formation water features, developed for the process to extend the gas discharge bulb supporting agents; third and extend research field foam drainage technology program, combined gas flow characteristics and ground current situation, research for an extended bubble discharge process scheme; Finally, the bubble discharge process Pilot Field Test and Evaluation, Implementation Evaluation election craft foam drainage wells 10 wells field trials.Based on the analysis and experimental research on the above theory, a clear focus on the implementation process of the bubble row well layer; the establishment of an extended field effusion criterion; the establishment of a gas discharge technology bubble optimal construction programs; develop suitable gas foaming agent( stick) and defoamers products; and optimized for the characteristics of the bubble discharge gas wells construction program(parameters).