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Supply of Fluid Loss Control / Viscosifier
Reference: SSG9976L16/05 1/22/2016, Location: Asia
Category: Viscosity
Scope of Work
The company bids for the supply of 120,000 KG Fluid Loss Control / Viscosifier / Encapsulating Agent.
The Specifications are as follows:-
1. Physical Properties: The material, as received, should be a free flowing white to creamish / brownish white powder free from foreign matter and visible impurities.
2. Moisture Content at: 15.00
105 +/- 2 DegC,% by
mass, maximum.
3. Apparent viscosity of 1.0 % (w/v) suspension of the material as received in fresh water and 4 % salt water.
Prepare a 1 % (w/v) suspension of the sample by stirring in ultimixer for 30 minutes in distilled water and 4 % salt water (prepared by dissolving 4 gms of LR grade NaCl in 100 ml distilled water)and measure apparent viscosity at 26 +/- 2 DegC by Fann VG meter.
(i) Apparent viscosity in fresh water, cp : 75-100
(ii) Apparent viscosity in salt water, cp : 65-85
4. Yield of 15 cp Apparent viscosity suspension:
Prepare a 15 cp apparent viscosity suspension of the sample by stirring in a multimixer for 30 minutes in distilled water and 4 % salt water (prepared by disssolving 4 gms of LR grade NaCl in 100ml distilled water) and calculate the yield of the sample which should be as follows.
(i) Yield in distilled water, KL/MT, min.: 250
(ii) Yield in 4 % salt water KL/MT, min.: 200
5. Sodium Carboxy Methyl Cellulose: 85.00 Content, % by mass (dry basis) min.
6. Degree of Substitution, minimum: 1.00
7. Performance Test:
A. In Fresh Water mud.
(i) Preparation of base mud.
Prepare a 10 % (w/v) suspension of OIL approved bentonite in distilled water and stir the suspension for 15 minutes in a multimixer so that no lumps are left after the stirring period. Age the bentonite suspension for 72 Hrs. at 90 +/- 2 DegC. After the lapse of the aging period, cool and adjust apparent viscosity in the range 15-20 cp with distilled water. Also adjust PH in the range 9.0-9.5 with 10 % NaOH solution,if necessary. Stir the suspension for 15 minutes in multimixer and determine apparent viscosity, yield value and API fluid loss of the suspension at 26 +/- 2 DegC which should be as follows.
(a) Apparent viscosity, cp: 15 - 20 cp.
(b) Yield value, lbs/100 ftsq: To determine
(c) API fluid loss, ml: To determine
(ii) Preparation of treated mud:
Treat the base 7A(i) with 0.5% polyanionic cellulose (R) sample. Stir in a multimixer for 30 minutes and divide the mud into two parts.
Performance at 26 +/- 2 DegC.:
Measure apparent viscosity, yield value and API fluid loss of one part of treated mud 7A(ii) at 26 +/- 2 DegC which should be as follows.
(a) Apparent viscosity, cp minimum.: 4 times of 7A(i,a)
(b)Yield value, lb/100 ftsq. minimum: 4 times of 7A(i,b)
(c) API fluid loss, ml maximum. : 40 % of 7A(i,c)
Performance at 120 +/- 2 DegC.:
Age second part of treated mud 7A(ii) at 120 +/- 2 DegC in rolling condition for 24 hrs. After aging, cool to 26 +/- 2DegC and stir in a multimixer for 15 minutes and determine apparent viscosity, yield value and API fluid loss of the mud at 26 +/- 2 DegC which should be as follows:
(i) Apparent viscosity, cp minimum.: 3 times of 7A(i,a)
(ii) Yield value,lb/100 sq.ft minimum.: 3 times of 7A(i,b)
(iii) API fluid loss, ml, maximum. : 40 % of 7A(i,c)
B. In Salt Water Mud:
(i) Preparation of base mud : Prepare 10 % (w/v) bentonite suspension of OIL approved bentonite in distilled water and stir the suspension for 15 minutes in a multimixer so that no lumps are left after the stirring period. Age the suspension for 72 hrs at 90 +/- 2 DegC After the lapse of aging period, cool and and add 4% (w/v) NaCl (LR grade) and age for 24 hrs. at 26 +/- 2 DegC. Dilute the suspension with 4 % Nacl solution and adjust apparent viscosity in the range 15-20 cp. Adjust PH in the range 9.0-9.5 with 10 % Noah solution if necessary. Determine apparent viscosity, yield value and API fluid loss of the suspension at 26 +/- 2 DegC which should be as follows.
(a) Apparent viscosity, cp: 15 - 20
(b) Yield value, lbs/100 ftsq. : To determine
(c) API fluid loss, ml: To determine
Treat the base mud prepared as per the 7B(i) with 0.5%(w/v) polyanionic cellulose (R) sample and stir in a multimixer for 30 minutes. Performance at 26 +/- 2 DegC. Determine apparent viscosity, yield value and API fluid loss of mud 7B(ii) above at 26 +/- 2 DegC which should be as follows :
(a) Apparent viscosity, cp minimum. : 2 times of 7B(i,a)
(b) Yield value,lb/100 ftsq minimum. : 1.5 times of 7B(i,b)
(c) API fluid loss, ml maximum: 15 % of 7B(i,c)
8. Packing: The material should be packed in multiwalled paper bags with at least two innermost layers suitably water-proofed, strong enough to withstand rigours of transit and storage. The material should be supplied in the original packing of the manufacture. Capacity 25 Kg net per bag.
9. Marking: Each bag should have clearly legible markings as given below:
(i) Name of the product.
(ii) Name of the supplier / manufacturer.
(iii) Date/Month/Year of manufacture.
(iv) Supply order number against the supply made.
N.B: Apparent viscosity and yield point shall be determined in a Fann VG meter and fluid loss by standard API low pressure fluid loss apparatus using compressed air or nitrogen as the pressure source.
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Related Tenders:
Analyzers, Gas
Calibration Equipment
Calibrators, Electronic, Pneumatic
Conductivity Meters
Density
Detector, Gas
Dissolved Oxygen meters
Drilling Instruments
Gas meters
General
Indicators and Recorders
Leak Locators
Level meters
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