Study And Application Of Surface Digitalization Technology Of Dynamic Logging In Daqing Oilfield

Oilfield Dynamic Logging Technology uses the methods of Field Geophysics andChemistry to monitor the reservoir dynamic characteristics including in situ fluidproperties, productivity, pressure distribution, inter-well connectivity, water injection,injection balance and measure effectiveness, and obtain the key parameters such asreservoir properties, oil reservoir boundary and residual saturation, etc.. The ultimatepurpose is to improve the productivity and recovery efficiency of the oilfield. Afternearly 40 years development and construction, 52 oil and gas fields have be detected inDaqing Oilfield, including 28 oilfields, 12 gas fields, and 12 oil and gas fields;the oilbearing area is 2289.17×104 ㎞,producing reserves is 486400×104t,recoverable oil is229432×104 t,the number of oil and water wells already put into use is 61582. Thispractical situation demands abundant underground information to be provided, andrequires the corresponding digital well logging surface equipment to accomplish datacollecting and processing fast and reliably.The content of this project is, taking the strategy of constructing and developingDaqing Oilfield informationization as requirement, taking the digitalized loggingsurface equipment as study carrier, taking the digitalized logging data as working unit,taking the digitalized surface logging result as the managing target to carry out the studyon surface digitalization of dynamic logging data in Daqing Oilfield and provide basictechnology support for establishing dynamic logging data base of Daqing Oilfield andanalyzing the data interpretation digitalization.The ideology of this project is, integration and combing of the four technologies,namely, designing and developing VXI bus logging modular, designing and developingreal-time data collecting software, designing and developing general control box, anddigitalized data managing, especially organic combination of the following concepts,the first application of VXI bus in dynamic logging modular, the improvement of FPGA(Field Programmable Gate Array) in "changing well logging hardware into software"the usage of VXI Plug&Play simulating technology in well logging tool drivingprocedure, all the above makes this study ideology the first one in the domestic oilfieldwell logging technology system.The result of this project is adopted by the oilfield dynamic logging technologysuperintendents through nearly three years' service provided in Daqing Oilfield andother oilfields at home and abroad. As a scientific research result with autonomousintellectual property, this project has made economic benefits nearly 100 million RMBfor the enterprise.