Double-liquid intelligent three-dimensional high-profile profiling, blocking, and water blocking technology for oil and gas wells; degradable temporary plugging agent (SDKX-5000Y) for fracturing; continuous viscosity-reducing foaming and oil-repellent active agent (SDKX-6669); downhole anti-wax and anti-scaling device; inhibitors to prevent sodium chloride crystallization in oil wells; supramolecular multifunctional oil-repellent active agent, enhanced water-repellent wetting inversion agent. Ultra-low interface tension foaming agent is used for foam flooding. Polymer microspheres, clay stabilizers, drag reducing agents for fracturing, bactericides, crosslinking agents, nano-oil repellent active agents, capsule degreasing agents, polyacrylamide products, etc. 

Double-liquid intelligent oil and gas wells

Anti-three high-profile profiling, blocking and blocking of water

1. Use polymers with a three-dimensional spatial network structure, and the degree of molecular shrinkage is small under high temperature and high salt conditions. The viscosity of the solution is reduced to a smaller extent.
2. Use organic crosslinking agents to reduce the intermolecular force, slow down the dehydration time and dehydration speed of the crosslinking system, and improve the long-term stability of the system.
3. Use the three-dimensional spatial network structure and association groups of the polymer to reduce the amount of crosslinking agents to reduce the number of crosslinking points in the crosslinking system, slow down the dehydration time and dehydration speed of the system, and improve the long-term stability of the crosslinking system.
4. System characteristics: In the micropores of heterogeneous oil reservoirs, due to the differences in permeability, when component SDKK-0198A is added, it will enter the micropores with high permeability, and then use water to drive away the excess and residual component A in the channel. At this time, no solid blockage is formed in the micropores, and then component SDKX-0198-B is slowly injected. In this process, component A and component B in the micropores slowly encounter each other to form a solid precursor, which provides sufficient time for operations such as adjusting the pressure of blocking the water. With the action of pressure and formation temperature, the solid precursor is converted into barium potassium-sulfur-titanium composite whiskers, and blocking the water and blocking the water and dissection are naturally completed.

Advantages of this method:

1. The final water plugging agent is an inorganic whisker material, the whisker is a single crystal, and has high pressure resistance.

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

3. Since the conversion from solid precursors to final whisker blocking and water regulation requires a certain temperature, pressure and time, it provides an operable time for the growth and adjustment of whiskers.

Heavy oil-cooled foam gas drive can flow continuously

Sticky foaming and oil repellent SDKX-6669

1. Sinovac heavy oil cold production air foam dispersing and reducing viscosity SDKX-6669 is composed of supramolecular structure, zwitterionic and non-dual ion composite. Their branches have different types of strong polar groups. The heavy oil is rich in gum, asphaltene, has a complex structure with a large molecular weight, polycyclic aromatic nucleus, and a strong polarity of the alkyl side branched chain. It contains a large number of oxygen, nitrogen, and sulfur atoms. The genes form hydrogen bonds with each other, creating a great cohesion force to make multiple gum and asphaltene molecules form sheet-like and three-dimensional bulk accumulations, thus showing a high viscosity of crude oil. After adding the oil-soluble viscosity reducer, the oil-soluble viscosity reducer molecules will be interspersed between the gum and asphaltene molecules of the heavy oil. The strong polar genes of oil-soluble viscosity reducers interact with the polar gene groups of heavy oil to form new hydrogen bonds. Relatively destroying the hydrogen bond between the original thick oil molecules, weakening the cohesion, and the colloid and asphaltene cannot form smaller accumulations, thereby reducing the viscosity of crude oil.
2. In the synthesis of SDKX-6669 products, the energy group of the foam tube is connected to the supramolecular viscosity-reducing active agent, which is innovative and high foaming, which is suitable for heavy oil cold-production air foam migration, ensuring foam regeneration and exerting the continuity and stability of the viscosity-reducing system.
3. SDKX-6669 product innovation points are used to synthesize products that can continuously reduce viscosity without rebound by combining dilute oil into the problem of high temperature, high mineralization, high salt flow heavy oil and extra heavy oil blocks in Xinjiang oil fields, as well as the problems of rapid viscosity reduction and rapid viscosity rebound in conventional wellbores.

Application scope:

The application of this product also solves the problem of heavy oil cold water production and SDKX-6669 can move into the medium and high-temperature reservoir during heavy oil water production and play a continuous and efficient viscosity reduction effect, and can also be applied to the hot water oil discharging efficiency after heavy oil hot production and multi-wheel drive.

Flowing heavy oil cold production continuously reduces viscosity

Foaming oil repellent active agent (SDKX-6669)

Product innovation: Continuous viscosity reduction under different temperature conditions, no rebound, and stability is better than conventional viscosity reduction agents.
1. Sinovac heavy oil cold production air foam dispersing and reducing viscosity SDKX-6669 is composed of supramolecular structure, zwitterionic and non-dual ion composite. Their branches have different types of strong polar groups. The thick oil is rich in colloids and asphaltene, has a large molecular weight, has a polycyclic aromatic nucleus, and has a strong polar complex structure on the branched chain of alkyl. It contains a large number of oxygen, nitrogen and sulfur atoms, and forms hydrogen bonds with each other with groups, creating great cohesion.
2. In product synthesis, the foam tube energy groups are grafted by supramolecular viscosity reduction active agent, which is innovative and high foaming, which is suitable for heavy oil cold-production air foam migration, ensuring foam regeneration and exerting the continuity and stability of the viscosity reduction system.
3. Product innovation points are to synthesize products that can continuously reduce viscosity without rebound by targeting the problems of high temperature, high mineralization, high salt flow heavy oil, and extra-heavy oil blocks mixed with thin oils and extra-heavy oil blocks, as well as the rapid viscosity reduction and rapid viscosity rebound in conventional wellbores.
Application scope: Widely used heavy oil foam drive, flowable heavy oil cold production low-concentration water drive, SDKX-6669 can move into medium and high-temperature reservoirs during heavy oil water drive to play a continuous and efficient viscosity reduction effect, and can also be used for hot water oil flooding efficiency after heavy oil hot production multi-wheel drive