Cement Retarder - Cementing Additives - Showran Technology Development Co., Ltd.

Cement Retarder

Type 1: SRC-01 Middle Temperature Retarder for Oil Well Cement

Product Description
SRC-01 can adhere to the surfaces of cement hydrate to inhibit the contacting between cement and water, also stick to the surfaces of crystal nucleons of cement hydrate to prevent the enlarging. Therefore, it can retard hydrating of cement slurry.

Characteristics
With a composition of cellulose derivative and hydroxycarboxylic acid and multiple of other compounds.
Suggested dosage: 0.1﹪~1.0﹪(BWOC). It functions better if combining with SRC-007 dispersant when middle-deep well is cemented.
It can reduce the consistency and improve the rheology of cement slurry.
To retard the thickening time efficiently.
Applied in the oil/gas wells with less than 110℃ of bottom hole temperature.
Drying mixing method.
Non-toxic, ordorless and non-corrosive.

Technical Specification

Appearance	Light yellow powder
Moisture, %	≤10.0
Fineness (0.315 mm mesh)，%	≤10.0
Initial consistency, Bc/80℃.46.5MPa.45min	≤30
Thickening time’s adjustment	Adjustable
Thickening Linear	Normal
Free Fluid, %	≤1.4
Compression strength,MPa/102℃.21MPa.24h	≥14

Cement slurry formula: G type cement SRC-01 :0.1﹪~1.0﹪+, W/C:0.44 + distilled water.

Type 2: SRC-02 High Temperature Retarder for Oil Well Cement

Product Description
SRC-02 can adhere to the surface of the hydrate of cement slurry to inhibit contacting with water and chelating with Ca²⁺ to prevent crystal nucleus from forming early. Therefore, it can retard thickening time.

Characteristics
With a composition of sulfonate and organic acid, and multiple of other compounds.
Normal dosage: 0.7﹪~2.0﹪(BWOC)
Applied temperature: 110℃~180℃(BHCT)
To extend the thickening time and enhance pumping rate, in medium~deep well or deep well; to configure the right angle thickening cementing system.
To reduce the cement consistency and improve rheology of cement.
Dry mixing method normally.

Technical Specification

Appearance	Brown powder
Moisture, %	≤10.0
Fineness (0.315mm mesh), %	≤10.0
Initial consistency , Bc	≤30
Thickening time adjustment, 120℃.73.9MPa.61min	Adjustable
Thcikening Linear	Normal
Free Fluid, %	≤1.4
Compression strength, MPa/144℃.21MPa.24h	≥14

Cement slurry formula:G type cement:594g + Silica sand:208g (160mesh~200mesh) + Distilled water 333ml + SRC-02: 0.7﹪~2.0﹪(BWOC).

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