Beijing 58 Gas Storage Group, The Ground Engineering Studies

The paper describes the research topics and the significance of the source, the research by introducing the research background about the main contents include:Beijing, natural gas, 58 gas storage and transportation system, Beijing,58 gas storage injection system technology program this process of natural gas desulfurization process and dew point control, SCADA Beijing 58 gas storage system components and operations management model.1. Beijing,58 in determining the gas storage group design scale injector, gas injection system size and scale of gas system design, the description of 58 natural gas storage in Beijing early in the gas expansion refrigeration process simply by throttling to control water dew point outside the hydrocarbon gas to reach the lost outside the standard, with the library continued recovery of natural gas, wellhead pressure gradually decreased, JT valve to propane auxiliary cooling+water cooling process control hydrocarbon dew point, gas medium, when any wellhead pressure of the library can not guarantee that JT valve before the pressure, dry gas offloading to switch to low-pressure system, this time using JT valve cooling system should control the hydrocarbon dew point of water, wellhead pressure to a minimum, the maximum cooling load of propane; Wing pre-22 gas storage operation, mining and transportation system outside the outlet into the high pressure refrigerant through the throttling expansion auxiliary cooling+propane or propane refrigeration process control technology outside the water dew point of hydrocarbon gas, mining and transportation system outlet into the low pressure cooling or using JT valve JT valve propane auxiliary cooling+water cooling process control hydrocarbon dew point; permanent post 22 gas storage operation, mining and transportation system outside the outlet into the high pressure refrigerant through the throttling expansion valve refrigeration process or JT+propane gas auxiliary cooling dew point outside the process control, mining and transportation system outlet into the low pressure valve with JT JT valve refrigeration or cooling+propane auxiliary cooling water, process control hydrocarbon dew point; Jing Yong 22 51 Early use of gas storage project skid mounted gas hydrocarbon dew point of water plant to process it.2. The role of natural gas dew point control unit is adopted by mining natural gas gas dehydration, hydrocarbon desulfurization processing.3. In the comparison of the solid amine desulfurization desulfurization method and program, the investment based on the device, operating costs and technology maturity considerations, refer to the same scale domestic and international natural gas purification plant, gas storage group of 58 Beijing desulfurization method using solid solution4. Beijing,58 gas storage wells to gas collected by gas production, pipeline metering station into the variorum; drainage wells to the well stream production of material through the drain pipe and into drainage Annotations production stations in the separator, the liquid discharge Well into mining wells, the gas directly into the production of separator gas imports into the normal flow of gas production; Wing 22 gas storage wells to the injection well flow objects, from the well site by a single well pressure pipeline Annotations of the gas gathering station into the injection valve, a throttle valve after the switch to the production by the portal or measure portal; Beijing, located only a 51 gas storage wells field, since the laying of injection well site, mining, namely, Annotations to the station one of the pipeline, wellhead located target flowmeter (injection and production sharing).5. Beijing,58 gas storage building automatic control system for the control group includes Beijing,58 gas storage, gas storage and Jing Yong 22 51 gas storage, the three libraries-one, under the jurisdiction of A～E five well sites, one annotations station, natural gas, two-way pipeline (including the second Shaanxi-Beijing sub-transmission station rebuilding and Yongqing Annotations pig receiver station) and the gathering and transportation pipelines, etc.; automatic control system to be controlled by two levels, namely, a control station for the variorum distributed control system (DCS) and the emergency stop control system (ESD), secondary control for the well field of remote terminal control unit (RTU). DCS and PLC automatic control system for the comparison, determine the configuration of DCS with convenience, flexibility and strong operational performance and expansion capability, and analog processing Annotations stations accounted for the bulk of the project, and consists of two subsystems and multiple third-party communications equipment. Annotations of the control system is implemented by the station DCS, ESD, well site RTU, refrigerator compressor PLC, third-party devices such as propane compressor PLC control systems, fire and gas detection systems and other components.