Lipopeptide Biosurfactants

Microbial profile control and drive technology

1、 Overview: Microbial profile control and displacement technology is a technology combining profile control and oil displacement system. Microbial method is used to limit or reduce the water absorption capacity of high permeable layer (section) and improve the water absorption capacity of low permeable layer (section) in water injection well, so as to improve the water injection profile of water injection well, improve the water drive sweep volume, and at the same time, cooperate with the injection of corresponding oil displacement system to achieve the purpose of improving the water drive effect The technological measures to improve oil recovery.   2、 Technical advantages: Green, environmental protection, no damage to the formation, environmentally friendly. With strong pertinence, different injection systems are developed for different blocks. Improve water injection profile, expand sweep volume and improve oil washing efficiency. Low cost, good effect, in line with the oilfield "cost reduction and efficiency increase".   3、 Application scope: This technology is mainly suitable for the reservoir environment with prominent interlayer contradictions and strong heterogeneity in the later stage of water injection. By adjusting the water injection channel, expanding the swept volume, and cooperating with the corresponding oil displacement system, the ultimate goal of improving oil recovery is achieved.

Surfactant flooding technology

1、 Technical mechanism: By reducing the interfacial tension of oil and water, changing the wettability, the contact angle becomes larger, the adhesion work is reduced, the oil is easily pulled away from the rock, and the oil recovery is enhanced; It is the activator that can reduce the capillary resistance of oil-bearing reservoir and make the active water enter the original capillary, so as to improve the sweep efficiency and oil recovery; It is the oil drop washed from the rock that is emulsified into O / W emulsion by the active agent. The emulsion produces the superimposed liquid resistance effect through the capillary, increases the resistance of the high-permeability section, injects water into the low-permeability section, and improves the sweep efficiency.   2、 Technical features: The surfactant flooding technology with biosurfactant as the main body. High efficiency, environmental protection, continuous stability, effective reduction of water injection pressure. Low cost, good effect, in line with the "cost reduction and efficiency". It has good solubility, can be prepared by using the existing equipment in the oil field, and has simple on-site construction.   3、 Technology application: