Flowable heavy oil cold production continuous viscosity reduction foaming flooding activator SDKX-6669
heavy oil cold production product innovation point: SDKX-6669 has dual functions of foaming and viscosity reduction under different oilfield reservoir temperatures, continuous viscosity reduction without rebound . Stability is better than conventional viscosity reducers.

• Overview and features

1. Kexing heavy oil cold production air foam flooding and viscosity reducing agent SDKX-6669 (hereinafter referred to as SDKX-6669) is composed of supramolecular structure, zwitterionic, non-diionic compound. Their branch chains have different types of strong polar groups. Heavy oil is rich in gums, asphaltenes, has a large molecular weight, has a polycyclic aromatic nucleus, and a complex structure with strong polar alkyl side branches. It contains a large amount of Oxygen, nitrogen, and sulfur atoms form hydrogen bonds with hydroxyl, ester, amino, carboxyl, sulfhydryl and other groups to generate great cohesion and make multiple colloidal and asphaltene molecules form a lamellar, three-dimensional shape. Accumulation body, thus showing high crude oil viscosity, after adding oil-soluble viscosity reducer, oil-soluble viscosity reducer molecules will be interspersed and distributed between the gum and asphaltene molecules of heavy oil. The strong polar groups of oil-soluble viscosity reducers interact with the polar groups of heavy oil to form new hydrogen bonds. Relatively destroy the hydrogen bonds between the original heavy oil molecules and weaken the cohesive force. The colloids and asphaltenes cannot form or form smaller accumulations, thus reducing the viscosity of the crude oil.
2. In the synthesis of SDKX-6669 product, the supermolecular viscosity-reducing active agent is used to graft the foaming tube energy group, which innovates both viscosity reduction and high foaming, which is suitable for heavy oil cold production air foam flooding, ensuring foam regeneration and performance The continuity and stability of the viscosity reduction system
3. The innovation of the SDKX-6669 product 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 conventional wellbore viscosity reduction. The difficult problems of fast viscosity reduction and fast viscosity rebound have synthesized a product that can continuously reduce viscosity without rebounding.

• Scope of application

SDKX-6669 products are widely used in heavy oil gas injection foam flooding, mobile heavy oil cold production low-concentration water flooding, SDKX-6669 can be used in heavy oil water flooding, the system migrates into the middle and high temperature reservoirs to play a continuous and efficient viscosity reduction effect. It can be applied to the hot water flooding efficiency of heavy oil thermal recovery after multiple rounds of flooding.

• skills requirement

Item	Index
Appearance	Colorless to light brown liquid
PH value	7～8
Density (20℃, g/cm 3 )	0.8～1.100
Viscosity reduction rate (add 0.35%),%	40～70
Foaming rate ＞	389

SDKX-6669 test results graph

Continuous viscosity reduction without rebound (after 1 day)

continuous viscosity reduction without rebound (after 3 days)

continuous viscosity reduction without rebound (after 7 days)
4. Recommended dosage: 0.33%～5%.
5. Packaging and storage: This product is packaged in plastic barrels or Tietong. The net content of each barrel is negotiated according to user requirements, and the net content tolerance meets JJF 1070-2005. The packaging barrel should be firm and leak-free, and other packaging methods can also be used according to user requirements.
Store in a ventilated and dry warehouse, and it is forbidden to place it near a heat source for a long time. The storage period is 20 months.