Dual-liquid intelligent anti-three-high profile control, plugging channeling and water plugging technology for oil and gas wells; degradable temporary plugging agent for fracturing (SDKX-5000Y); continuous viscosity reduction foaming and oil displacement activator for cold production of flowable heavy oil (SDKX -6669); downhole anti-wax, anti-scaling and anti-corrosion device; inhibitor to prevent sodium chloride crystallization in oil wells; supramolecular multifunctional oil displacement active agent, enhanced water flooding wetting reversal agent. Ultra-low interfacial tension foaming agent for foam flooding. Polymer microspheres, clay stabilizers, drag reducers for fracturing, bactericides, crosslinkers, nano-oil displacement active agents, capsule breakers, polyacrylamide products, etc. 

Dual fluid intelligence for oil and gas wells

Anti-three-high profile control, channel blocking, and water blocking technology

1. Using a polymer with a three-dimensional spatial network structure, under high temperature and high salt conditions, the degree of molecular shrinkage is small. The viscosity of the solution decreases slightly.
2. Using organic cross-linking agent to reduce the force between molecules, slow down the dehydration time and speed of the cross-linking system, and improve the long-term stability of the system.
3. Utilizing the three-dimensional spatial network structure and associative groups of the polymer, reducing the amount of crosslinking agent, reducing the number of crosslinking points of the crosslinking system, slowing down the dehydration time and speed of the system, and improving the long-term stability of the crosslinking system .
4. System characteristics: In the micropores of heterogeneous reservoirs, due to the difference in permeability, when the component SDKK-0198A is added, it will enter the micropores with high permeability, and then use water to drive away the excess and remaining in the channel If there is no solid blockage formed in the micropores, then the component SDKX-0198-B is slowly injected. During this process, component A and component B in the high permeability micropores meet slowly The formation of solid precursors provides sufficient time for the operation of profile control and water shutoff pressure. With the effect of pressure and formation temperature, the solid precursors are transformed into barium potassium-sulfur-titanium composite whiskers, and water shutoff and profile control are completed naturally.

Advantages of this method:

1. The final water shutoff agent is an inorganic whisker material, which is a single crystal and has high compressive strength.

2. A SDKX-0198A-SDKX-0198B system that adapts to the target micropore size and adjusts the particle size naturally. The reactant of the SDKX-0198A-SDKX-0198B system is liquid, not pre-prepared solid particles, and the final filling particle size is modeled on the target pore size. The method of naturally adjusting the particle size to adapt to the target micropore size.

3. Since the conversion of solid precursors into the final whisker water plugging and profile control requires a certain temperature, pressure and time, it provides operational time for the growth and adjustment of whiskers.

Foam-driven heavy oil cold production can flow continuously

Viscosity reducing foaming and oil displacement active agent SDKX-6669

1. Kexing heavy oil cold production air foam flooding and viscosity reducing agent SDKX-6669 is composed of supramolecular structure, zwitterionic and non-dual ion compound. They have different types of strong polar groups on their side chains. The heavy oil is rich in gums, asphaltenes, has a large molecular weight, has a polycyclic aromatic nucleus, and has a complex structure with strong polar alkyl side branches. Oxygen, nitrogen, and sulfur atoms and genes form hydrogen bonds with each other, generating great cohesion to make multiple colloidal and asphaltene molecules form a lamellar, three-dimensional accumulation, which shows high crude oil viscosity. After the viscosity reducer, the molecules of the oil-soluble viscosity reducer will be interspersed and distributed between the gum and asphaltene molecules of the heavy oil. The strong polar gene of the oil-soluble viscosity reducer and the polar gene cluster of the heavy oil interact to form new hydrogen bonds. Relatively destroy the hydrogen bonds between the original heavy oil molecules and weaken the cohesion, so that the colloids and asphaltenes cannot form small accumulations, thus reducing the viscosity of the crude oil.
2. In the synthesis of SDKX-6669 product, the supramolecular viscosity-reducing active agent is used to connect the foaming tube energy group to innovate both viscosity reduction and high foaming, which is suitable for heavy oil cold production air foam flooding, ensuring foam regeneration and performance The continuity of the viscosity reduction system is stable.
3. The product innovation of SDKX-6669 is to reduce the viscosity of Xinjiang oilfield by mixing thin oil with high temperature, high salinity, high salinity flowing heavy oil and extra-heavy oil blocks, as well as the fast viscosity reduction and viscosity rebound that exist in conventional wellbore viscosity reduction. The fast problem has been synthesized into a product that can continuously reduce viscosity without rebounding.

Application range:

The application of this product also solves the problem of heavy oil cold recovery water flooding. SDKX-6669 can be used in heavy oil water flooding when the system migrates into the medium and high temperature reservoirs to play a continuous and efficient viscosity reduction effect. It can also be applied to heavy oil thermal recovery multi-wheel flooding. After the hot water flooding efficiency.

Continuous viscosity reduction in cold production of flowable heavy oil

Foaming flooding active agent (SDKX-6669)

Product innovation: Continuous viscosity reduction under different temperature conditions, no rebound, and stability better than conventional viscosity reducers.
1. Kexing heavy oil cold production air foam flooding and viscosity reducing agent SDKX-6669 is composed of supramolecular structure, zwitterionic and non-dual ion compound. They have different types of strong polar groups on their branches. Heavy oil is rich in gums and asphaltenes, has a large molecular weight, has a polycyclic aromatic nucleus, and has a strong polar complex structure with alkyl side branches and contains a large amount of oxygen. , Nitrogen and Sulfur atoms form a hydrogen bond with each other as a group, resulting in great cohesion.
2. In the product synthesis, the supermolecular viscosity-reducing active agent is used to graft the foaming tube energy group to innovate both viscosity-reducing and high-foaming, which is suitable for heavy oil cold production air foam flooding, ensuring foam regeneration and exerting a viscosity-reducing system Continuity and stability.
3. The product innovation point is to reduce the viscosity of Xinjiang oilfields with high temperature, high salinity, high salinity flowing heavy oil, and extra-heavy oil blocks mixed with thin oil, as well as the rapid viscosity reduction and rapid viscosity rebound in conventional wellbore. The problems have been synthesized into a product that can continuously reduce viscosity without rebounding.
Application range: Widely used in heavy oil foam flooding, mobile heavy oil cold production low-concentration water flooding, SDKX-6669 can be used in heavy oil water flooding when the system migrates into the middle and high temperature reservoirs to play a continuous and efficient viscosity reduction effect. It can also be applied Hot water flooding efficiency of heavy oil thermal recovery after multiple rounds of flooding.