Research Of Ground Controllable Multilayer Testing Technology

Testing is very important in the process of oil and gas exploration,and testing is the key to oil and gas exploration results,find and know the most direct means of underground oil and gas,provide scientific basis for the development of important link.Controllable multilayer ground test under the pre-production test technology from the mouth of the well into the fishing tools to open or close the sliding sleeve switch to realize controllable multilayer ground test pre-production testing technology.In the process of operation,according to the need of oil exploration and production down to the underground test system,form a complete set of tools(packer and sliding sleeve switch,safety valve,etc.),with multiple sets of packer reservoir interval is divided into multiple sets of independent reservoir,each reservoir down into a set of production and sliding sleeve switch transmitting pressure units,each unit by capillary pressure,and the Thermocouple centralizer collar through the pipeline,and has led to the ground.After the operation,with the ground production test well as well as the measurement and control system.Before production,the sliding sleeve switch is in the closed state,according to the need of the production system,from the production test well head down to the wire for fishing tools,switch on a specified sliding sleeve,realize the oil(gas)well productionThe technology is a test,control,collection,transmission and analysis of production performance data,and well completion ability of comprehensive data of composite technology,can through the way of the ground or remote control to improve the reservoir performance and production dynamic control technology.The technology can work system of hierarchical control reservoir,and measured the corresponding reservoir pressure data,through the optimization of oil well production test data analysis,so as to maximize the recovery of a reservoir.One-time into the tubing string under complete multilayer production,greatly reduce the operation cost,shorten the test,the test cycle.