Breakthrough in application of biological enzyme technology in oil drilling in China

According to the report, Sinopec's key scientific research project "Research on bio enzyme plugging free drilling fluid system" undertaken by Shengli oilfield drilling engineering technology company has recently passed the technical achievement appraisal organized by Sinopec science and technology development department The expert group believes that the research results fill in the blank of the application of biological enzyme technology in the field of oil drilling in China and have reached the international advanced level It is understood that the "bio enzyme plugging free drilling fluid system" makes use of the environmental protection degradation and catalytic characteristics of modern bio enzyme technology, which makes the system not only have good rheology, inhibition and lubricity, but also do not need to use conventional pressure plugging, acidizing plugging and other technologies after the completion of drilling The mud cake previously formed in the reservoir is automatically degraded and broken under the action of bio enzyme When the enzyme enters the pore of oil layer, it can improve the flow capacity of crude oil, and thus improve the recovery of crude oil The system can meet the three requirements of drilling engineering construction, oil and gas reservoir protection and environmental protection at the same time It can be widely used in oil drilling operation, completion fluid, workover fluid and other construction This technology fundamentally improves the understanding of plugging technology and realizes ultra-low pollution and low damage drilling of reservoir The field tests of 34 wells in Shengli Oilfield and Jilin Oilfield show that the technology can protect oil and gas reservoir effectively.