Analytical Method for Determining Restitution Coefficient of Shale Pyrolysis Parameters
A technology of restitution coefficient and analysis method, which is applied in the field of oilfield exploration and development, and can solve the problem that there is no pyrolysis analysis method for the proportion coefficient of heavy hydrocarbons
Active Publication Date: 2018-01-16
CHINA PETROLEUM & CHEM CORP +1
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[0003] Therefore, when using pyrolysis parameters to evaluate the oil and gas content of shale, it is necessary to carry out pyrolysis S 1 Recovery of light hydrocarbons and pyrolysis of S 2 Determination of soluble hydrocarbon content in two studies, while the pyrolysis of S 1 Light hydrocarbon correction factor and pyrolysis S 2 There is no pyrolysis analysis method for reference for the proportion coefficient of heavy hydrocarbons
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[0017] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.
[0018] Such as figure 1 as shown, figure 1 It is a flow chart of the analysis method for determining the recovery coefficient of shale pyrolysis parameters of the present invention.
[0019] In step 101, a newly drilled rock core sample is selected and rapidly sealed and frozen. The process goes to step 102.
[0020] In step 102, the pyrolysis instrument is turned on to ventilate and stabilize for 2 hours, and then the machine is calibrated and kept in a standby state. The process goes to step 103.
[0021] In step 103, liquid nitrogen is poured into a copper mortar, and tools such as a special crucible for a pyrolysis instrument, a hammer, and tweezers are frozen to keep them at a low temperature. Take 2 to 3 g of uncontaminated samples ins...
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The present invention provides an analysis method for determining the recovery coefficient of shale pyrolysis parameters. The analysis method for determining the recovery coefficient of shale pyrolysis parameters includes: step 1, grinding the rock core sample, and adding liquid nitrogen while grinding; step 2, Weigh the ground sample, put it into the special crucible of the pyrolysis instrument, and put the special crucible into the liquid nitrogen; step 3, take the special crucible out of the liquid nitrogen and put it on the crucible position, and use the pyrolysis instrument for pyrolysis analysis and step 4, placing the same sample at room temperature and performing pyrolysis analysis to obtain the hydrocarbon content lost in conventional pyrolysis analysis, which is used to calculate the recovery coefficient. The analysis method for determining the recovery coefficient of shale pyrolysis parameters reduces the loss of natural gas and light hydrocarbons in the sample, and compares it with conventional pyrolysis analysis to obtain the recovery coefficient of shale pyrolysis parameters.
Description
technical field [0001] The invention relates to the technical field of oilfield exploration and development, in particular to an analysis method for determining the restoration coefficient of shale pyrolysis parameters. Background technique [0002] During the usual analysis of shale samples, gaseous hydrocarbons (C 1 -C 7 ) components are quickly lost. In addition, S 1 Can only detect parts higher than C 30 of free hydrocarbons. Therefore conventional pyrolysis of S 1 The peaks are generally smaller than the extractable organic matter contained in the shale and need to be corrected. Generally speaking, the pyrolysis peak S 1 Some heavy hydrocarbons, non-hydrocarbons and asphaltenes not detected in the pyrolysis S 2 peak, although composed of pyrolyzed S 2 Most of the hydrocarbons of the peak are derived from kerogen cracking, but some heavy hydrocarbons, non-hydrocarbons and pyrolysis and thermal evaporation of asphaltenes are also included. [0003] Therefore, wh...
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IPC IPC(8): G01N5/04
Inventor 梁彤武刘会平李政徐兴友刘庆朱日房徐大庆黎萍韩冬梅林晶王丽华王志英吴平
Owner CHINA PETROLEUM & CHEM CORP