Air injection foam flooding ultra-low interfacial tension foaming agent

 


Dual-function ultra-low interfacial tension
foaming agent KPMQ-5209 specification for gas injection foam flooding and oil flooding
Innovative point: strong foaming, ultra-low interfacial tension dual functions
One. KPMQ-5209 performance:
gas injection foam flooding, combined oil flooding Dual-functional ultra-low interfacial tension foaming agent KPMQ-5209 (hereinafter referred to as KPMQ-5209) uses organic raw materials designed by molecular structure and zwitterionic surfactants as the main raw materials, through copolymerization and multifunctional group graft polymerization to strengthen homogeneity Process prepared. It is suitable for low-oxygen air foam flooding, steam nitrogen foam flooding, and carbon dioxide flooding with high temperature resistance, salt resistance, and high salinity in Xinjiang Oilfield. It has both ultra-low interfacial tension for oil displacement and high foaming and foam stabilization capabilities. A dual-function innovative high-tech product.

Two. Product features

Research and development of high-efficiency syntactic foam dual-functional system: According to the characteristics of the oil layer, through the design of matching the molecular weight of KPMQ-5209 with a molecular weight structure of more than 100 for the molecular weight of crude oil from 325 to 535, the characteristics of suitable crude oil displacement are developed and obtained; it must first meet to achieve high efficiency and ultra-low interfacial tension , In the concentration range of 0.1%-0.3% <5x10-3 mN/m., while foam quality; foaming rate is greater than 400ml, half-life is greater than 10min.
(1) KPMQ-5209 foam flooding technology with its unique seepage characteristics (concentration 0.1%-0.35% achieves ultra-low interfacial tension under high temperature and high salt conditions, blistering and high apparent viscosity), has ideal oil displacement effect, so it is interested and supported by oilfield users for promotion and application.
(2) KPMQ-5209 is not only suitable for air foam flooding of dilute crude oil and heavy oil reservoirs in sandstone reservoirs and carbonate reservoirs in Xinjiang Oilfield, but also suitable for single- and binary flooding (supramolecular polymer + KPMQ-5209) ); Can be widely used in profile control and flood control of the new binary flooding KPMQ-5209 and the secondary coating composite expanded particles.
(3) KPMQ-5209 foaming agent system, for the (ultra) low adsorption and retention of rocks in the formation migration (the specific surface of low permeability rocks is 2-10 times that of medium and high permeability).
(4) The KPMQ-5209 foam system not only exhibits high apparent viscosity during migration, but also must meet the technical requirements for improving the sweep efficiency.
(5) The foaming speed of the foam system ≈ the defoaming speed to ensure the foam regeneration of the foam flooding, the continuous foaming ability, and the large slug foam driving distance.
three. KPMQ-5209 technical index
KPMQ-5209 foaming agent main technical performance index
  name index
1 Appearance Light yellowish brown liquid
2 proportion 1.01~1.20
4 PH value of 1% aqueous solution 6.0~8.0
5* Foaming capacity/mL (0.35%) 400
6 Foam half-life/min 5
7 Oil-water interfacial tension (0.1-0.35) mN/m 5x10-3
 
four. Application scope of
KPMQ-5209 KPMQ-5209 is mainly aimed at reducing oxygen air foam flooding, nitrogen foam flooding, steam compound nitrogen foam flooding. And can be widely used in oil-water well profile control, oil displacement, horizontal well, oil well productivity recovery to improve oil recovery.
KPMQ-5209 can cooperate with cold production composite foam flooding after multiple rounds of steam stimulation.
Gas wells, shale gas wells, coalbed methane wells, gas analysis measures. , To speed up foam drainage and other gas well gas enhancement measures.
KPMQ-5209 is widely used in low-permeability and medium-permeability oil fields, tertiary oil recovery in oil and gas wells to increase recovery, with super foaming ability, compact and uniform foam, long half-life, good foam stability, and 5X10-3mN/m flooding The oil has ultra-low interfacial tension. It has the characteristics of salt resistance, salinity resistance, good oil resistance, alkali-free, non-toxic and safe use.
KPMQ-5209 can be used for workover measures, low-density completion fluid configuration, foam fluid flushing, acidification, mixing, foam drainage and gas recovery of oil wells, and to reduce or eliminate pollution damage to oilfield reservoirs. It solves the technical problem that conventional foaming agents are not oil resistant and have poor stability after contact with condensate oils.

Fives、Recommended usage of KPMQ-5209 injection method
1. Air foam flooding, nitrogen foam flooding, static injection according to the design, segmented plug injection or mixed injection. (Inject KPMQ-5209 aqueous solution slug-air injection slug-clean water slug-air-water mixing slug) Dosage: KPMQ-5209 recommends to prepare 0.1-0.35% aqueous solution, use pump truck or profile control pump from the annulus It is being injected into the oil and gas layer.
2. Composite nitrogen foam flooding method; can use --▶ steam injection, --▶ nitrogen injection, --▶ KPMQ-5209 aqueous solution slug injection.
3. Profile control and flooding can be used as the main slug; profile control pump or pump truck is recommended for injection; the recommended concentration is 0.3-0,5%; the front slug (blocking the partition wall)-KPMQ-5209 flooding Oil slug--expanded particle sealing rubber slug.
Six、Packaging and storage: This product is packaged in plastic barrels or Tietong. The net weight of each barrel is 200kg according to user requirements. The net content tolerance conforms to 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.