Xitao Polymer Co., Ltd.
LOCATION: Oilfield Fracturing Fluid > Acid fracture gelling fluid > Acid fracturing thickening agent for ultra-deep carbonate reservoirs.
Acid fracturing thickening agent for ultra-deep carbonate reservoirs.

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Due to the characteristics of carbonate reservoir pore seam development & high-temperature formation, to ensure the acid fracturing effect , needs to improve the penetration depth of the reservoir, increase the acid fluids conductive ability, in this sense,it's required to improve the rheological properties & reduce the acid-rock reaction speed.So we developed the ground cross-linking type that has good thermal stability and shear resistance in order to achieve a low fluid loss and acid-rock reaction speed , maximize the acid fracturing effects & economic benefits. It's suitable for ultra-deep carbonate reservoirs.

1) Properties:

* copolymer of cationic monomer& acrylamide

* For carbonate reservoir( Acid/rock reaction)

* Viscosifying effectively to 20%HCL & 25%HCL.

* Good temperature & shear resistance, can be used in acid system of 180℃ reservoir.

2) Characteristics: 

--Good rheological & thermal stability

A: 0.8% DC4099+20%HCL gel system is for 140-160℃ reservoir. Viscosity can reach to 40-60mPa.s under 25℃/170 s-1condition, 30-35mPa.s under 90℃/170 s-1,and 20-30mPa.s under 120℃/170 s-1 condition.(as per chart 1)

B: 1.0% DC4099+20%HCL gel system is for 160-180℃ reservoir. Viscosity can reach to 50-70mPa.s under 25℃/170 s-1condition, 45-50 mPa.s under 120℃/170 s-1,and 20-30mPa.s under 160℃/170 s-1 condition.(as per chart 2)

Chart 1:0.8% DC4099+20%HCL gel rheological graph 

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TEMP.℃2230405060708090100110120130140
Viscosity
     mPa.s
45.241.737.336.133.931.831.130.128.728.127.026.225.9

CHART 2: 1.0% DC4099+20%HCL gel temp.-viscosity graph

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--Good retarding performance

Test showed that the retarding rate of 0.8% DC-4099+20%HCL high-temp. gel is more than 90% compared with white acid 

--Excellent fluid loss reducing property

DC-4099 high temperature gel is of perfect rheological function, effectively reduces the formation of fluid loss.

-- Superior performance and compatibility

It can mix with inhibitor, demulsifier, iron ion stabilizer, anti-swelling agent, soluble to water or acid. 

3)Product specification


Items Spec.
AppearanceWhite powder
Solid content, %≥90%
Mesh≤30
SolubilityDispersed and dissolved in water and acid
Retarding rate>90%
Tackifying property

0.8% DC4099+20%HCL, ≥40mPa.s under room temp./170s-1 condition and 20-30mPa.s in120℃;
1.0%DC4099+20%HCL,20-25mPa.s under 60/170s-1condition.

Reducing frictional resistance25%-35% of water friction


4) USING METHOD

Should mix with acid at room temperature before using and guarantee no fisheyes.

Can use agitator while preparing indoors, adding the dry powder into the whirlpool, stir for 1 hour to avoid caking.

Can store for 2 year in cool and dry place.

Xitao Polymer Co. Ltd.
Tel:+86-10-60491602
Fax:+86-10-60492072
Email: river@xitao.com
Mobile/what’s app:+86-13911651774
New plant: Yankougang Polymer Area, Rudong,Jiangsu,China
Plant add: Hou Wanggezhuang,Mulin,Shunyi, Beijing, 101309,China
Office add: 10H Oriental Kenzo Office Building, No. 48 Dongzhimenwai Dajie, Dongcheng Dist., Beijing, 100027,China