Chrome Lignosulphonate Supplier and Manufacturer

CHROME LIGNOSULPHONATE

Chrome lignosulphonate is a multi purpose deflocculant and gel strength reducer, temperature stabilizer and filtration control additivefor usein all water base drilling fluid systems.


CHARACTERISTICS AND PROPERTY

Physical Appearance . . . . . . . . . . . . Dark Brown powder
Specific Gravity . . . . . . . . . . . . . . . . 1.2 - 1.4(S.G)
pH (1% solution) . . . . . . . . . . . . . . .2.8 - 4(pH)
Bulk density . . . . . . . . . . . . . . . . . . 37 lb/ft3 (590 kg/m3)

(1).    Physical State :The material shall be in the form of powder, free from visible impurities.
(2).    Moisture Content at 105 ± 2 °C percent by mass:............10.0 (Maximum).
(3).    Iron Content, (Elemental),    percent by Mass:.................... 0.2 (Maximum).
(4).    Water Soluble Content: Sample should be freely soluble in water.
(5).    Chromium Content : Should show positive test for presence of Chromium. However, free dichromate should be absent.
(6).    Lignosulphonate Group Test: Positive (Lignosulphonate group test shall be considered positive if a 50 ppm solution of the sample in distilled water shows presence of an absorption peak at 275 - 285 nm on a UV-Visible spectrophotometer).

(7).    Performance Test In Fresh Water Mud:

(a) At 24 ± 2 °C:

(i) Prepare a Base Mud with VISION approved Bentonite, having Apparent Viscosity in the range 50 — 55 cP. by diluting pre- hydrated Bentonite [prepared by stirring 10% (w/v) Bentonite with Distilled Water for 30 minutes with a laboratory stirrer having 5000 — 6000 :pm and aging the suspension for 72 hours at 90 ± 20C with Distilled Water. Determine the Apparent Viscosity (cP) and Yield Point ( lbs/100 sq. ft) at 24 ± 2 °C C by a Fann VG Meter or Equivalent, after stirring for 15 minutes in a Hamilton Beach Mixer at high speed.
Record the Apparent Viscosity and Yield Point of the fresh water base mud.

(ii) Treat a portion of the Base Mud with 1.0% (w/v) of the Sample and adjust the pH of the Mud in the range 10.0 — 10.5, if required. Determine Apparent Viscosity (cP) and Yield Point ( lbs/100 sq. ft) of the Treated Mud at 24 ± 2°C.
Apparent Viscosity of the treated fresh water base mud should not exceed 33% of the value obtained for the fresh water base mud 7(a) (i).
Yield Point of the treated fresh water base mud should not exceed 10% of the value obtained for the fresh water base mud 7 (a) (i).

(b) With Hot Rolling at 160 ± 2°c:
(i)    Hot roll a portion of the Base Mud 7 (a) (i) at 160 ± 2°C for 24 hours, in a roller oven. Determine the Apparent Viscosity ( cP) and Yield Point (lbs/100 sq. ft ) of this Mud after cooling to 24 ± 2°C and stirring for 15 minutes in a Hamilton Beach Mixer at high speed.
Record Apparent Viscosity and Yield Point of the hot rolled fresh water base mud.


(ii) Also hot roll the Treated Mud as prepared at 7 (a) (ii) at 160 ± 2 °C for 24 hours in a roller oven. Determine the Apparent Viscosity and Yield Point of the treated, hot rolled Mud, after cooling to 24 ± 2°C and stirring for 15 minutes in a Hamilton Beach Mixer at high speed.
Apparent Viscosity of the treated, hot rolled fresh water base mud should not exceed 50% of the value obtained for hot rolled fresh water base mud 7 (b) (i) .
Yield Point of the treated, hot rolled fresh water base mud should not exceed 33% of the value obtained for hot rolled fresh water base mud 7 (b) (i) .

(8). Performance Test in Salt Water Mud:

(a) At 24 ± 2 °C:
(i) Prepare 10% (w/v) Bentonite Suspension by dispersing VISION approved Bentonite in Distilled Water, by stirring for 30 minutes with laboratory stirrer (5000 — 6000 rpm) and age for 72 hours at 90 ± 2 C so that the resulting Mud when cooled to 24 ± 200C and stirred with a laboratory stirrer (5000 — 6000 rpm) for 30 minutes has Apparent Viscosity in the range 85 ± 5 cP. Treat this Mud with 4% (w/v) Sodium Chloride (AR grade) and stir for 30 minutes, with laboratory stirrer and then age for 24 hours at 24 ± 2 °C . After lapse of aging period, stir the Mud for 15    minutes with laboratory stirrer and adjust its Apparent Viscosity in the range of 25 — 30 cP by adding 4% Salt solution, if required. Determine Apparent Viscosity and Yield Point of the treated Mudat 24± 2 °C.
Record Apparent Viscosity and Yield Point of the salt water base mud.

 
(ii) Treat this Mud with 1.0% (w/v) of Sample and adjust pH in the range 10.0 — 10.5, if required and stir for 15 minutes with Hamilton Beach Mixer at high speed and record its Apparent Viscosity and Yield Point at 24 ±2 °C .
Apparent Viscosity of the treated salt water base mud should not exceed 50% of the value obtained for salt water base mud 8(a) (i).
Yield Point of the treated salt water base mud should not excees 25% of the value obtained for the salt water base mud 8(a)(i).

(b) With Hot Rolling at 160 ±2 °C

Hot roll the treated, Salt Water Mud 8 (a) (ii) at 160 ± 2 ° C, for 24 hours in a roller oven. After lapse of aging period, cool the Mud to 24 ± 2°C and stir for 15 minutes with a Hamilton Beach Mixer at high speed and record its Apparent Viscosity and Yield point.
Apparent Viscosity of the treated hot rolled salt water base mud should not exceed 50% of the value obtained for the salt water base mud 8 (a) (i).
Yield Point of the treated hot rolled salt water base mud should not exceed 25% of the value obtained for the salt water base mud 8 (a) (i).

Note: Use of this chemical is subject to compliance of environmental guidelines on this subject

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APPLICATIONS

Chrome lignosulphonate has proven to be an excellent all purpose deflocculant and fluid loss control agent. Itis effective for viscosity control and fluid loss reduction in all water base mud systems, including fresh water, brackish water, seawater, salt, lime, gyp and potassium systems. Laboratory tests and field usage have demonstrated the superior deflocculating ability of chrome lignosulphonate, even in the presence of contaminants and elevated temperatures.
Normal treatments of chrome lignosulphonate range from 1 to 12 lb/bbl (2.85 to 34.2 kg/m3). Initial treatments usually range from 1 to 6 lb/bbl (2.85 to 17.1 kg/m3), depending on the mud system, solids concentrations and the desired results; treatments can be added easily to the system through the mud hopper.
Due to chrome lignosulphonate's low pH, treatments require additional caustic soda, or an alternative alkaline material, to maintain a consistent pH. A normalratio is 1 sack of caustic soda to every 4 sacks of chrome lignosulphonate. Chrome lignosulphonate is most effective in mud systems with an alkaline pH in the range of 9 to 11. Forlower pH systems, the product may be premixed in a higheralkalinity solution priorto being added to the active mud system.


ADVANTAGES

Highly effective deflocculant and rheology stabilizer.
Compatible with all water-base mud systems.
Temperature tolerance in the 275° to 325°F (135° to 163°C) range.
Helps reduce fluid loss without high concentrations of clay or filtration control additives.
Effectively inhibits bentonitic cuttings and/or shale hydration when used in sufficient concentrations.
Tolerant to, and continues to function in, the presence of contaminants.
Contains the more acceptable Cr3+ chrome valence state.


LIMITATIONS


• Most effective in alkaline systems with a pH of 9.5 or above.
• Contains chrome which may not be acceptable for all applications, depending on local environmental regulations and considerations; a chrome-free lignosulphonate, is available for these applications.


TOXICITY AND HANDLING


Bioassay information is available upon request.
Handle as an industrial chemical, wearing protective equipment and observing the precautions as described on the Transportation and Material Safety Data Sheet (MSDS).

PACKING AND STORAGESCHROME

lignosulphonate is packaged in 50-lb (22.7-kg), multi-wall, paper sacks. Store in a dry location away from sources of heat or ignition, and minimize dust.

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