SY 5408-1991 Determination of clay particle content in sedimentary rocks SY5408-1991 standard download decompression password: www.bzxz.net

SY5408-91 Petroleum and Natural Gas Industry Standard of the People's Republic of China
Determination of Clay Particle Content in Sedimentary Rocks
Published on January 15, 1992
Ministry of Energy of the People's Republic of China
Implementation on July 1, 1992
1 Subject Content and Applicable Scope
Petroleum and Natural Gas Industry Standard of the People's Republic of China Determination of Clay Particle Content in Sedimentary Rocks
$Y 5408-91
This standard specifies the determination method and quality requirements for the content of clay particles less than 5um in sandstone and carbonate rock and less than 2um in clay rock.
This standard is applicable to the determination of clay particle content when clay minerals are quantified in sedimentary rocks. 2 Principle
According to Stokes' law, the sedimentation siphon separation method is used. 3 Reagents and equipment materials
3.1 Reagents
a. Hydrochloric acid: V/V, 3%,
b. Flocculant,, m/m, 1% magnesium chloride solution. 3.2 Equipment and materials
a. Balance: sensitivity 0.01g3
b. Centrifuge: 40a0r/min
C, constant in drying oven;
d. Ultrasonic generator: 1kW,
e. Glass beaker: 3000ml or 800ml high-foot beaker, f. Plastic centrifuge cup, 300ml.
4 Methods
4.1 Crush the sample into particles of 15~2.5mm. 4.2 If the sample contains oil, wrap it with sample paper and wash it with oil to make its fluorescence below level 4. 4.3 Weigh 50-100g of the crushed sample, place it in a large-number beaker, add distilled water to cover it for 24 hours. 4,4 Divide the soaked sample thoroughly, pour it into the beaker, add distilled water, the liquid level is 20cm from the bottom, stir, let the sandstone sample stand for 1 hour, and the clay sample stand for 8 hours.
4.5 If a stable suspension wave cannot be made, do the following treatment. 4.5.1 If there is carbonate, the clean water should be sucked out, and the hydrochloric acid solution prepared by the door should be added gradually until the light reaction stops. Then use distilled water to wash away the chloride ions until the clay particles are stably suspended, and the standing time is the same as 4,4. 4.5.2 If there are soluble salts in the sample, use distilled water to wash the sample until the clay particles are stably suspended, and the standing time is the same as 4.4. 4.6 Use a siphon to suck the suspension in the upper 8cm (sandstone and carbonate rock) or 10cm (clay rock) at a water temperature of 20°C. The mouth of the pipette should be at least 3-5cm higher than the sediment at the bottom of the cup. As shown in the attached figure. 4.7 Add distilled water again and repeat 4.6 under the conditions of 4,4. Sandstone and carbonate rock are separated and extracted 8 times, and clay rock is extracted 10 times. 4.8 Take out 25ml of the suspension extracted each time and mix them, pour them into the weighed centrifuge cup, and centrifuge them at 3000r/min until the top is clear and transparent.
SY 5408-91
4,9 Add 3~5㎡l of flocculant to the remaining suspension, let it stand for 24h, and pour off the top liquid. 4,10 Pour the flocculated clay liquid into the weighed centrifuge cup in batches, and centrifuge it at 3000r/min until the top is clear and transparent. 4.11 Place the centrifuge cup containing the sample in a constant temperature drying oven and dry it at low temperature of 60\C. 4,12 Weigh and record the mass of the separated and extracted clay particles. 4.13 Wrap the sample extracted and dried in 4.8 with sample wrapping paper and write down the sample number for clay analysis. Calculate the clay particle content, %:
Wu ZhongX-
-Separated and extracted clay particle mass,
m Total sample amount, g
K--Correction coefficient, 90 for sandstone and carbonate rock, and 91 for clay rock. 6 Quality requirements
6.1 Sample weighing is accurate to 0.02g.
6,2 The relative error of parallel determination of clay particle content is less than 5%. See Appendix A for the analysis report of clay particle content.
Sample number
Additional instructions:
SY 5408-91
Appendix A
Analysis report form for clay particle content in sedimentary rocks (supplement)
Sample sending unit
Well depth or section
Analyst:
Reviewer:wwW.bzxz.Net
This standard is proposed by the Petroleum Geological Exploration Professional Standardization Committee. This standard is technically managed by the Petroleum Geological Exploration Professional Standardization Committee. This standard was drafted by the Exploration and Development Research Institute of Daqing Petroleum Administration Bureau. The main drafters of this standard are Xin Guoqiang and Xue Wentao. Analysis date
Sampling volume
Maximum amount
Reviewer,
Clay particles
This standard continued to be valid after the review in 199. The review result has been approved by the State Bureau of Petroleum and Chemical Industry.
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