Patent AU-2021102298-A4 (AU)
Title: Micro-foam fracturing fluid, preparation method and use thereof
Inventor: JIANG JIANFANG
IPC: C09K8/70
Filed: 2021-04-30
Granted: 2021-06-17
Abstract: OF THE DISCLOSURE 
The present disclosure belongs to the technical field of fracturing fluids, and 
discloses a micro-foam fracturing fluid, and a preparation method and use thereof. The 
formula of the micro-foam fracturing fluid includes the following components in 
percentage by mass: 0.2% of a special-grade hydroxypropyl guanidine gum, 0.2% of an 
organic boron cross-linking agent, 0.2% of sodium dodecyl sulfate (SDS), 0.3% of 
dodecyl sulfobetaine (SJT), 0.2% of dodecanol (SF-1), and the balance of water. The 
micro-foam of the micro-foam fracturing fluid of the present disclosure has a diameter 
distributed between 30-100 m, and is very fine and uniform; has a special "one-core, 
two-layer, and three-mode" microstructure, and thus has a stable performance. The foam 
of the present disclosure is tiny, fine and uniform, and has the characteristic of high 
compression resistance; has a temporary plugging effect, can effectively reduce 
filtration loss of the fracturing fluid into tiny pores or natural cracks, and improve the 
efficiency of the fracturing fluid; and has the characteristics of high-temperature 
resistance and shear resistance, and a strong sand carrying capacity; the mass of the 
foam is large, and the liquid is little, such that flowback after the fracturing of the 
low-pressure formation can be increased, and water sensitivity and adhesive residue 
damage are reduced.  
17647191_1 (GHMatters) P116212.AU
-1/11
Respectively weighing 0.2 g of a special-grade hydroxypropyl guanidine gum, 0.2 g of an S101 
organic boron cross-linking agent, 0.2 g of SDS, 0.3g of SJT, and 0.2 g of SF-laccording to 
a proportion 
S102 
Adding 100 ml of tap water into a 1,000 ml volumetric flask, slowly dissolving the 
weighed 0.2 g of the special-grade hydroxypropyl guanidine gum powder in the water 
contained in the volumetric flask, and stirring the mixture uniformly for swelling for 45 
S103 
Sequentially adding the weighed 0.2 g of the organic boron cross-linking agent, 0.2 g of 
SDS, 0.3g of SJT, and 0.2 g of SF-1 into the volumetric flask, and continuously stirring 
until uniform to form a milky white micro-foam solution as the resultant micro-foam 
fracturing fluid 
FIG. 1 
450 ----------------------------------------------------------------------------------------------------------------------------
-- FBM-4 -- ABS -0-SDS 
400 ----- ----------------------------------------------------------------------------------
DLSK - OP-10 --- SJT 
350 ------------------------------------------------------- -- --------------------- --------------------------------------
250 ------------------------------- ----------------- - - - ------------------- - - --- - - -----------------
200 ----------------- - --==== ---r ------------------------ -------------- ------- ------------------------------
150 ----------------------------------------- ---------------------------------------------------------------------------------
100 ----------------------------------------------------------------------------------------------------------------------------
50 
0 1 2 3 4 5 6 7 
Concentration of single foaming agent/(g/1) 
FIG. 2 
1