Frac Ball, Coated Dissolvable Ball

Frac balls are inserted into wells to build up pressure in the ground. WINGOIL frac ball can be used as a test for the HCL Acid Resistance Test.

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Specifications of Magnesium Alloy

 

Grade

Max. Tensile

Strength

 (Mpa)

Max. Pressure

Strength  

(Mpa)

Yield Strength

 (Mpa)

Shear Strength

(Mpa)

Elongation

(%)

Elasticity Modulus

(GPa)

Hardness

(HB)

Testing Conditions

Dissolution Rate

mg/(cm2*hr)

Dissolution

Rate  mm/hr

Density

(g/cm3)

Sample Rod Size

Temp

(℃ )

Concentration of CL

 

HH-006

380 430 260 140 >3 44.8 >80 93 3% 50-70 0.56 1.83 Φ110×1000
380 430 260 140 >3 44.8 >80 93 1% 20-35 0.35 1.83 Φ110×1000
240   180   26     150         Φ90

HH-006A

320 366 240 162 >6 44.8 >75 93 3% 50-70 0.56 1.83 Φ70×1000
320 366 240 162 >6 44.8 >75 93 1% 20-30 0.35 1.83 Φ70×1000

HH-008

(012)

410 486 290 197 >5 45 >100 93 3% 40-55 0.46 1.94 Φ110×1000
410 486 290 197 >5 45 >100 93 1% 15-25 0.3 1.94 Φ110×1000
310   260   12     250         Φ90
HH-008A 410 486 290 197 >5 45 >100 93 3% 60-80 0.68 1.94 Φ110×1000
410 486 290 197 >5 45 >100 93 1% 35-50 0.42 1.94 Φ110×1000
HH-008B 350 408 240 176 >7 44.8 >85 93 3% 30-45 0.43 1.93 Φ110×1000
350 408 240 176 >7 44.8 >85 93 1% 15-25 0.25 1.93 Φ110×1000
HH-010 200 325 130 99 24 44.3 ≥40 93 3% 20-30 0.12 1.8 Φ110×1000
HH-011 410 486 300 197 >4.5 44.8 >100 93 3% 20-35 0.28 1.93 Φ110×1000
410 486 300 197 >4.5 44.8 >100 93 1% 8-15 0.17 1.93 Φ110×1000
HH-016 280 350 190 127 13 44.8 >60 93 3% 40-55 0.46 1.8 Φ110×1000
280 350 190 127 13 44.8 >60 93 1% 15-25 0.25 1.8 Φ110×1000
HH-017 210 352 150 99 18 44.8 >60 93 3% 40-55 0.48 1.8 Φ110×1000
210 352 150 99 18 44.8 >60 93 1% 15-25 0.19 1.8 Φ110×1000
HH-017K 235 352 170 120 15 44.8 >60 93 3% 100-130 0.75 1.81 Φ110×1000
235 352 170 120 15 44.8 >60 93 1% 50-70 0.45 1.81 Φ110×1000
HH-018 230 362 170 130 12 44.4 ≥45 50 0.84% 35-50 0.42 1.82 Φ110×1000
HH-019 235 352 170 120 7 44.5 >55 93 3% 160-190 0.86 1.8 Φ110×1000
235 352 170 120 7 44.5 >55 45 0.10% 20-40 0.15 1.8 Φ110×1000
HH-021 305 415 220 140 >3 44.5 >65 43 0.05% 80-100 0.81 1.94 Φ110×1000
HH-022 305 415 220 155 >4.5 44.8 >80 43 0.05% 45-60 0.45 1.94 Φ110×1000
HH-023 275 385 180 140 8 44.5 >65 43 0.05% 20-35 0.27 1.93 Φ28×1000
HH-024 280 415 240 145 >4.5 44.8 >70 43 0.05% 45-65 0.46 1.83 Φ60×1000
HH-808 370 486 262 197 >3.5 44.8 >100 50 0.84% 40-60 0.44 2.16 Φ110×1000

Dissolvable Frac Ball HCL Acid Resistance Test

Experimental purpose: Obtain the acid corrosion resistance of the coating soluble ball in a certain temperature and certain concentration of HCL solution through experimental observation

Experimental Steps

1. Prepare experimental equipment, soluble ball, solute (HCL), clean water, beaker, balance, vernier caliper Constant temperature water bath
2. Check the appearance and size of the soluble ball, and take a photo
3. Prepare 20% HCL solution
4. Immerse the coating soluble ball in HCL solution
5. The constant temperature box maintains the HCL solution at a certain temperature, and observes the acid corrosion resistance of the soluble ball
6. Take out the soluble ball at intervals, check the appearance, shape and size of the soluble ball, and record the soluble ball weight, reconstitute the acid solution, continue to observe the corrosion resistance of the soluble ball

Test index: Record the corrosion resistance of the soluble ball every 24 hours.
Experimental considerations: Every time during an acid resistance check, pay attention to safety, record relevant data and take pictures clearly.

Date Test location Model By
2020.11.15.10:00 Wingoil Lab Dissolvable Magnesium aluminum alloy ball with Protection Coating  Li Zhuo
Temperature Fluid HCL Acid  
70℃ HCl 20%  

Solution Preparation and Appearance of Acid-resistant Soluble Ball

Solution preparation and appearance of acid-resistant soluble ball

Remarks (appearance of soluble ball): smooth and bright surface

Corrosion resistance after 24h

Solution preparation and appearance of acid-resistant soluble ball

Corrosion resistance after 48h

Solution preparation and appearance of acid-resistant soluble ball

Corrosion resistance after 60h

Solution preparation and appearance of acid-resistant soluble ball

Remarks (appearance of soluble ball): The soluble ball is corroded with a few holes, the largest hole diameter is 6mm, and the depth is 2mm

Corrosion resistance after 72h

Solution preparation and appearance of acid-resistant soluble ball

Remarks (appearance of soluble ball): The gap of the soluble ball is slightly deepened, the gap diameter is 30mm, and the depth is 11mm

Experimental Results

The coating soluble ball is at 70℃, 20% concentration of HCL solution, within 24 hours, the acid corrosion resistance is good, and the soluble ball coating is intact; 24-48 hours, the soluble ball has a few holes, 48-60 hours, A slightly larger gap appears, and within 60-72 hours, the gap is slightly deepened and enlarged.