A method for the determination of total organic carbon in sedimentary rocks
A technology of total organic carbon and determination method, which is applied in the direction of soil material testing, test sample preparation, material inspection products, etc., can solve the problems of polluted environment detection time, waste of hydrochloric acid solution, inaccurate detection data, etc., and achieve the goal of eliminating samples loss, the effect of improving accuracy
Inactive Publication Date: 2019-02-19
CHINA PETROLEUM & CHEM CORP
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[0004] The purpose of the present invention is to provide a method for measuring total organic carbon in sedimentary rocks, to solve the problem of inaccurate detection data caused by splashing and spreading phenomena in the steps of dissolving and washing samples when measuring total organic carbon in sedimentary rocks, and excessive use of hydrochloric acid solution. Waste of hydrochloric acid solution, environmental pollution, long detection time and low efficiency
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[0017] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0018] Example figure 1 As shown, this embodiment provides a method for determining total organic carbon in sedimentary rocks, including the sampling steps of crushing and weighing samples, the steps of dissolving samples, the steps of washing samples, the steps of drying samples and the steps of measuring.
[0019] In this example, three kinds of "organic carbon standard substances in source rocks" GBW07115, GBW07117, and GBW07119 with different contents were selected as test samples, and three kinds of standard materials were tested by different personnel through the reverse osmosis method of the present invention and the national standard conventional method. Sample measurement, each detection is more than 5 times, in the embodiment of the present invention, the original rock sample is crushed to 100 mesh; the sample is weighed and 0.10g i...
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The invention provides a determining method of total organic carbon in sedimentary rock. The method comprises the steps of sampling, sample dissolving, sample cleaning and determining. According to the step of sampling dissolving, an ultra-low carbon and sulfur crucible containing a sample is placed into a container, a hydrochloric acid solution is added into the container containing the ultra-low carbon and sulfur crucible, the height of the level of the hydrochloric acid solution is in the half of the ultra-low carbon and sulfur crucible, and solution dissolving is performed through permeation of the hydrochloric acid solution into the ultra-low carbon and sulfur crucible; according to the step of sample cleaning, the ultra-low carbon and sulfur crucible containing the sample treated by the hydrochloric acid solution is placed into the container, distilled water is added into the container containing the ultra-low carbon and sulfur crucible, the height of the level of the distilled water is one third away from the opening of the ultra-low carbon and sulfur crucible, and the sample is cleaned to be neutral through permeation into the ultra-low carbon and sulfur crucible. The problems that in the prior art, a washing bottle is used for direct flushing, light components spread, and the sample in the ultra-low carbon and sulfur crucible is likely to be brought out are solved.
Description
technical field [0001] The invention relates to the field of petroleum geology, in particular to a method for measuring total organic carbon in sedimentary rocks. Background technique [0002] In conventional and unconventional oil and gas exploration and development, organic carbon is one of the important evaluation indicators of source rocks. Organic carbon in source rocks approximately reflects the abundance of organic matter in source rocks, and source rocks are all sedimentary rocks. [0003] At present, the "Determination of Total Organic Carbon in Sedimentary Rocks" method is currently used. During the experiment, it is necessary to add an excessive amount of hydrochloric acid to the sample to dissolve the sample, which is likely to cause hydrochloric acid waste and environmental pollution problems; when the sample contains high content of carbonatite and other substances, When encountering hydrochloric acid, a strong reaction will occur, and splashing and spreading p...
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Login to View More IPC IPC(8): G01N1/44G01N33/24
CPCG01N1/44G01N33/24
Inventor 周洁叶建国刘峰孙婧榕陈佳储亦睿张婷婷
Owner CHINA PETROLEUM & CHEM CORP