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Sand production in oil wells is an important reason for oil wells to reduce production or dead wells, and is collectively referred to as sand damage in the industry. Dagang Drilling Institute has carried out many years of research and practice in oil well sand control, and has achieved many scientific research results, but there are still many technical problems that have not been solved. In the past two years, the institute has carried out in-depth research on fracturing filling tools, sand control working fluid, gravel combination, sand control design software, on-site construction real-time monitoring system and interpretation software, and made breakthrough progress, forming a set suitable for Fracturing and sand control comprehensive supporting technology for unconsolidated sandstone reservoirs.
According to the researchers, the fracturing filling tool designed and developed by this institute solves the problem of splitting and sand control in long well sections, and has the function of verifying gravel packing quality and secondary sand filling; the developed end sanding process can make The seam length and seam width of the seam crack are optimized; the developed sand control construction real-time monitoring and interpretation system can perform the fracture and fracturing test before construction, and the dynamic display of the construction parameters and the crack extension process is recorded in real time during the construction, and after filling Can perform filling quality verification.
Dagang Drilling Institute's fracturing and filling sand control technology has achieved new breakthroughs
The fracturing and filling sand control technology researched by Dagang Oilfield Group Corporation has become a good medicine for increasing production and increasing efficiency of loose sandstone oil wells. As of December 10, the technology has been applied to 42 wells in Dagang Oilfield this year, with a construction success rate of 100%, sand control efficiency of 100%, and cumulative production of crude oil of 23,500 tons.