Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY5490-93
Sodium Bentonite for Drilling Fluid Test
Published on March 27, 1993
Ministry of Energy of the People's Republic of China
Implementation on September 1, 1993
Main Content and Scope of Application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Sodium Bentonite for Drilling Fluid Test
SY 5490-93
This standard specifies the technical indicators, test methods, accuracy requirements, inspection rules and packaging marks of sodium bentonite for drilling fluid test. This standard is applicable to the base slurry material used for evaluating drilling fluid additives - sodium bentonite. Reference Standard
SY5060 Bentonite for Drilling Fluid
Technical Indicators
Sodium bentonite for drilling fluid test should meet the technical indicators specified in Table 1. Table 1
Water content,
Residue on 0.125 mm sieve
Residue on wet sieve of 0.074 mm
Total amount of calcium and magnesium salts, ng/kg
Suspended water properties
Test method
Apparatus and materials
Reading of viscometer at 600 r/min
Plastic viscosity, Pas
Dynamic plastic ratio
(ms) -1
Filtrate loss m!
4.1,1Analytical instrument: Sensitivity ±0.0002 g. 4.1.2
Balance: Range 100 g, Sensitivity ±0.01 g. 4.1.3
Constant temperature drying oven. Temperature control sensitivity ±2°C. .1.4
Laboratory centrifuge.
Weighing bottle Φ65×35mm.
Dryer.
Evaporation III: 100~150ml.
Ministry of Energy and Tide of the People's Republic of China approved on March 27, 1993
Implementation on September 1, 1993
Volume flask: 500ml.
Volume flask, 250ml.
Beaker: 200ml and 400ml each.
Fat-belly pipette: 25ml.
Conical flask: 250mI.
Burette: Acid type, 25.00ml.
Filter paper: LTP type or other similar filter paper.
Stopwatch: Graduation value 0.1s.
Standard sieve: 125um aperture. Www.bzxZ.net
$Y 5490—93
4.1.17 Screen analyzer: 76mm in diameter, 83mm in height, with nozzle, water pressure gauge and standard screen with 174um aperture, water jet pressure can be adjusted to 69kPa.
4.1.18 High-speed agitator: 11000±300r/min under load, with single wave blade with 25mm diameter, mass 5.5g, sample cup height 180mm, cup top diameter 97mm, cup bottom diameter 70mm, made of stainless steel or corrosion-resistant pure material. 4.1.19 Rotational viscometer: Fann 35 type or similar rotational viscometer. 4.1.20 Medium-pressure leakage meter: sample cup ancient diameter 76.2mm, height 64.0mm, filtration area 458060mm. The pressure of the filtration test is 69035kPa.
Sodium hexametaphosphate: chemically pure reagent.
Hydrochloric acid solution C (HCI) = 2mol/L: 1 volume of concentrated hydrochloric acid reagent, dissolved in 5 volumes of distilled water. Sodium hydroxide solution C (NOH) = 0.5mol/L: 20 sodium oxychloride reagent, dissolved in 1L of distilled water 4.1.23
Ammonia buffer pH 10: Weigh 54g ammonium chloride, weigh to ±0.01g, drop into 200ml distilled water, add 350ml concentrated ammonia, dilute to 1L with distilled water.
4.1.25 T indicator solution 6g/L: Weigh 0.5g chrome black T reagent and 2.0g hydroxylamine hydrochloride, dissolve in water, and dilute to 100ml with ethanol.
4.1.26 EDTA standard solution C (E, DTA) = 0, U1 mol/L: Weigh 4.0g of EDTA disodium reagent, dissolve in 1L of distilled water, shake well, and then calibrate with 0.01 mol/1. zinc oxide standard solution. Concentration calibration: Accurately measure 25ml of zinc oxide standard solution C (ZnO) = D.01 mol/L, dilute to 100ml with distilled water, add 10% nitrogen water to make the pH of the solution about 8, add 10ml of ammonia buffer solution with pH 10 and 4 drops of chrome black T indicator solution, and titrate with FDTA standard solution until the purple turns into pure blue as the end point. The molar liquid density of EDTA standard solution is:
C (EDTA) -
formula; Vzno standard solution volume, ml; - full dosage of EDTA solution, ml.
... C(znO).
4.1.27 Zinc oxide standard solution C(ZnO)=0.01mol/L: Weigh 0.8g of standard zinc oxide burned to constant weight at about 800°C, weigh to ±0.0002g, dissolve in 3ml of concentrated sulphuric acid and 25ml of distilled water, and dilute to scale with a 1000ml volumetric flask. The molar concentration of the obtained solution is:
C(ZnQ)=m/81.38-.
Where: m is the mass of zinc oxide, gl
81,38-—1mol ZnO is the number of grams.
4.2 Test Procedure
4.2.1 Determination of Moisture
SY 5490--93
Take a clean weighing bottle, place it in an oven at 105±2°C and dry it to constant weight, weigh the empty bottle, and weigh it to ±0.0002g. In the above weighing bottle, accurately weigh 5kg of soil sample, weigh it to ±0.0002g, and place it in an oven at 105±2°C and dry it to constant weight. Weigh the weighing bottle and the soil sample in it, and weigh it to ±0.0002g.
Constant weight operation: Dry the sample at the predetermined temperature for 2h, immediately transfer it to the desiccator and cool it for 20min, and weigh it. Dry the sample for another 30min, cool it in the desiccator for 20min, and then weigh it. Repeat this process until the weight of the two weighings does not exceed 0.0002g. Calculation:
Water content = m2/m = × 100%
Where: m. - the mass of the weighing bottle after constant weight, gm--the mass of the sample and the weighing bottle before drying, gsm1--the mass of the sample and the weighing bottle after drying, g. The result is calculated to two decimal places.
4.2.20.125mm Determination of sieve residue (3)
Use the reduction method to weigh 2Dg of soil sample, put it into a standard sliding sieve, weigh it to ±0.01g, shake it carefully and sieve it, and finally transfer the remaining sample on the sieve into pre-weighed ten-dried evaporation blood, weigh the weight of the sieve residue, and weigh it to 0.01g. Calculate:
m1×10v%
0.125mm lower sieve residue =
Where: m—mass of sieve residue, 93
m sample mass, g.
Calculate the result to one decimal place.
.4.2.3 Determination of 0.074mm wet sieve residue. (4)
Weigh about 10g of soil sample, weigh to = 0.01g, add 350ml of distilled water containing 0.20g of sodium hexametaphosphate, stir with a high-speed stirrer for 30min, let stand for aging for 2h, and stir for another 5min. Put the sample into the wet sieve analyzer and wash the residue on the sieve with a water pressure of 69kPa for 2min. When washing, let the elbow of the nozzle lean against the edge of the sieve frame and move the spray sieve surface back and forth. Transfer the residue on the sieve surface into an evaporating towel that has been pre-dried at 105±2°C for 2h, and dry it in an oven at 105±2°C for 2h. After cooling, weigh it to the nearest 0.01g.
Calculation solution:
m..×100%.
0.074mm wet sieve residue =.
Where: mi—the amount of residue on the sieve, g body
m——the amount of sample mass.
Calculate the result to one decimal place.
4.2.4 Determination of total amount of calcium and magnesium salts
Use the reduction method to weigh 5g of soil sample and weigh it to the nearest +0.0002g, put into a 250ml volumetric flask, add 100ml distilled water, shake thoroughly to separate, let stand for 2h, add 10ml hydrochloric acid solution, shake well. Let stand overnight. Add distilled water to the mark, shake well. Let stand to separate. Pour out the upper solution, separate with a centrifuge, separate at least 00ml of the liquid, accurately draw 25ml of the clear liquid with a fat pipette, put into a 250ml conical flask, add 50ml distilled water, 4ml sodium hydroxide solution (make pI 6~8), 10ml ammonia buffer solution 5 drops of black T indicator solution, and titrate with EDTA standard solution until the rhodopsin turns blue. Calculation:
Total amount of calcium and magnesium salts
Where: C--molar concentration of EDTA standard solution, SY5490-93
V--titration opening of EDTA standard solution, ml; rn
-mass of soil sample, g:
V. ± ml of sample volume (V. = 250 ml); V-ml of sample taken during titration (V = 25 ml). Calculate the result to three significant figures.
4.2.5 Determination of viscosity and dynamic plastic ratio
On a high-speed stirring machine, add 22.5 ± 0.01 g of sample to 350 ml of distilled water while stirring. After 5 minutes, stop stirring, pour the sample on the cup wall and the stirrer blade into the cup, and continue stirring for 15 minutes (a total of 20 minutes). Remove the sample cup, cover it, and let it stand for 16 hours. Before the measurement, stir at high speed for 1 minute, let it rest for 2 minutes, and then measure the readings (and p) at 600 r/min and 300 r/min on a rotational viscometer at a temperature of 24 ± 3°C.
Calculation:
Viscometer reading at 600r/min: Read directly, plastic viscosity (
Dynamic plastic ratio = 0.479(2-)/(as)
Measure 3 parallel samples and take the average of the results of and the results of, and calculate the result to three significant figures. 4.2.6 Determination of filtration loss
Pour the remaining drilling fluid after the viscosity measurement into the sample cup called the pressure filter loss meter to about 13mm from the top of the cup. Put in filter paper and assemble the instrument. Adjust the pressure regulating valve and increase the air pressure to 690±35kPa within 30s. Then start timing and start collecting filtrate until the time is 30min. Count the number of milliliters of the collected fuel liquid, which is the filtration loss. 5
Precision Precision requirements
Parallel sampling test, the relative error should meet the requirements of Table 2. Table 2
0.125mm screen weight
0.074mm wet screen afterimage
Total amount of calcium and magnesium salts
Viscometer reading at 600r/min
Viscometer reading at 300r/min
Filtration loss
Relative error. %
6 Inspection rules
$Y5490—93
6.1 Use a sampling tube with an inner diameter of 20mm to insert it from top to bottom into a newly opened barrel for sampling. The sampling tube should be inserted to the bottom of the barrel, the sample weight should be no less than 100g, and the number of barrels sampled should be no less than 10% of the total number of barrels. Among the above samples, they are respectively called Take 50g, including and, mix well at the same time, and bottle the remaining samples separately for later use. Divide the mixed sample into two parts and place them in sealed bottles. Mark the sample name, sampling date, and sampler on the bottle. One bottle is used for testing, and the other bottle is kept for three months for arbitration re-inspection. 6.2 Sampling and inspection should be completed within one month after the user receives the product. When the product does not meet the technical indicators specified in Table 1, the user may submit a report to the manufacturer within 40 days of receiving the product. After receiving the test report, the manufacturer may request a re-inspection within 10 days, and the re-inspection shall be the responsibility of the party requesting the re-inspection.
6.3 When the supply and demand parties cannot reach an agreement, the preserved sample (or the supply and demand parties jointly take samples) should be sent to the arbitration unit for further inspection, and both parties will be subject to arbitration testing. The test results are not restricted. The arbitration test fee shall be borne by the losing party. 7 Packaging and Marking
7.1 Packaging
The product is packaged in a black plastic barrel with a screw cap, lined with a layer of polyvinyl nitride film bag, and the bag mouth is tightly tied with a thin rope. The net weight of each barrel is 40kg, with an allowable error of 2%.
2 Label
The words printed on the packaging barrel (for example) are:
Sodium bentonite for drilling fluid testing
Produced by Klamath Mud Material Company
Supervised by the Exploration Engineering Research Institute of the Ministry of Geology and Mineral Resources
Additional Notes:
This standard was proposed and technically managed by the Drilling Subcommittee of China National Petroleum Corporation. This standard was drafted by the Exploration Engineering Research Institute of the Ministry of Geology and Mineral Resources. The drafter of this standard is Wang Zhongying.
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