Method for calibrating and recovering shale oil and gas content by using hydrocarbon generation simulation component

Abstract

The invention discloses a method for calibrating and recovering the oil and gas content of shale by using hydrocarbon generation simulation components. The method comprises the following steps: performing a hydrocarbon generation simulation experiment on an immature / low-maturity shale sample to obtain hydrocarbon compositions and contents thereof under different thermal evolution degrees; calculating a gas-oil ratio GOR and a light / heavy hydrocarbon ratio Kn under different thermal evolution degrees; constructing a relation curve between the hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectivity Easy Ro; according to the GOR and the Kn, establishing a relationship among the GOR, the Kn and the Easy Ro; carrying out thermal desorption gas chromatography detection on the high-ripeness shale sample to obtain the heavy hydrocarbon content # imgabs0 #, and combining the heavy hydrocarbon content # imgabs0 # with Kn to obtain the recovered light hydrocarbon content # imgabs1 # and the recovered chromatography total hydrocarbon amount M chromatography; according to the GOR and the M chromatography, obtaining the recovered gas content M gas and the chromatography oil content M chromatographic oil; carrying out rock pyrolysis detection before and after extraction on the high-maturity shale sample to obtain a pyrolysis hydrocarbon value S2 before extraction and a pyrolysis hydrocarbon value S2'after extraction, and calculating the recovered oil content M oil by combining the difference value of S2 and S2 'and M chromatographic oil; the shale oil-gas content is accurately recovered.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas exploration and development, and in particular to a method for calibrating and restoring shale oil and gas content by using hydrocarbon generation simulation components. Background Art

[0002] Since low molecular weight hydrocarbons are very volatile, the loss during sample collection and processing can cause the gaseous hydrocarbons (C1-C5) to almost evaporate, and light hydrocarbons also lose to varying degrees. Therefore, in the current experimental analysis process, most of the light hydrocarbons are lost, whether it is Soxhlet extraction or rock pyrolysis. The current methods for obtaining the lost gas volume mainly include USBM direct method (straight line method), polynomial method, Smith-Williams method and Amoco curve fitting method. The rock sample just cored from the well is placed in the desorption tank, and the desorbed gas volume is continuously measured at different time nodes. The relationship between the desorbed gas volume and the desorption time is fitted. According to the relationship between the cumulative desorbed gas volume and the desorption time, the gas loss generated by the rock during the drilling process is estimated. The most critical parameter affecting the accuracy of the calculation of the lost gas volume is the loss time. The value of the fitting relationship when the time is zero is the lost gas volume. However, the gas content obtained by the USBM straight line method may be too low. Geochemical parameters (such as 2-methylpentane and 3-methylpentane, 2-methylhexane, 3-methylhexane, etc.) are also used to recover light hydrocarbon losses. C1-C5 component concentrations and component ratios (such as C1 / C2) in mud gas data are also used to predict real-time reservoir fluid GOR. However, sometimes due to poor quality of AMG data, production data will not match the predicted GOR.

[0003] In recent years, pressure coring technology has been successfully applied in many oil fields, but the difficulty of this technology is to avoid the high formation pressure and formation temperature affecting the sealing of the pressure coring tool. Therefore, it is necessary to develop more effective methods to recover the light hydrocarbons and natural gas lost in mud shale to obtain the original oil and gas content of shale. This is of great significance for the classification of shale oil and gas reservoir types, the evaluation of shale oil and gas resources, and the optimization of the "sweet spot" of horizontal wells. Summary of the invention

[0004] The main purpose of the present invention is to propose a method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components, aiming to solve the above-mentioned problems.

[0005] To achieve the above object, the present invention proposes a method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components, comprising the following steps:

[0006] Step S1, using a small volume sealed simulation device to perform a hydrocarbon generation simulation experiment on an immature / low-mature shale sample, and obtaining the hydrocarbon composition and content of the immature / low-mature shale sample at different thermal evolution degrees at a plurality of hydrocarbon generation simulation temperature points set in a temperature range of 300-600°C, wherein the hydrocarbon composition includes lighter hydrocarbons and heavier hydrocarbons, and the content of the lighter hydrocarbons is TA Cx , the content of the heavier hydrocarbons is TA Cy ;

[0007] Step S2: Calculate the gas-oil ratio GOR and light / heavy hydrocarbon ratio K of the immature / low-mature shale sample at different thermal evolution degrees according to the hydrocarbon composition and its content. n ;

[0008] Step S3: Based on the time-temperature compensation principle of chemical reaction rate and the first-order Arrhenius equation, the hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectance Easy R are constructed. o The relationship curve of

[0009] Step S4: according to the gas-oil ratio GOR and the light / heavy hydrocarbon ratio K n , establish the gas-oil ratio GOR, the light / heavy hydrocarbon ratio K n The equivalent vitrinite reflectance Easy R o relationship;

[0010] Step S5: Take 20-50 mg of high-maturity shale sample and perform thermal desorption gas chromatography to obtain the heavy hydrocarbon content in the high-maturity shale sample. And combined with the light / heavy hydrocarbon ratio K n Perform light hydrocarbon loss recovery calculation to obtain the light hydrocarbon content after recovery and the total hydrocarbon content of the chromatogram after recovery M 色谱 , where 6≤n≤30;

[0011] Step S6: according to the gas-oil ratio GOR and the total hydrocarbon content M after recovery 色谱 , calculate the gas content after recovery M 气 and chromatographic oil content M 色谱油 ;

[0012] Step S7, taking 100 mg of high-maturity shale samples for rock pyrolysis detection before and after extraction, to obtain the pyrolysis hydrocarbon value S2 before extraction and the pyrolysis hydrocarbon value S2' after extraction, and combining the difference between S2 and S2' and the chromatographic oil content M 色谱油 Calculate the oil content after recovery M 油 .

[0013] Furthermore, the calculation formula of the gas-oil ratio GOR is:

[0014]

[0015] The light / heavy hydrocarbon ratio K n The calculation formula is:

[0016] Among them, 6≤n≤30.

[0017] Furthermore, the hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectance Easy R o The relationship curve is:

[0018]

[0019] In the formula, w is the content of the component that does not produce chemical reaction;

[0020] t is the chemical reaction time;

[0021] k is the chemical reaction rate constant;

[0022] A is the pre-exponential factor;

[0023] e is the base of natural logarithm;

[0024] E is the activation energy;

[0025] R is the molar gas constant;

[0026] F is the degree of chemical reaction, and 0≤F≤1.

[0027] Furthermore, the gas-oil ratio GOR, the light / heavy hydrocarbon ratio K n The equivalent vitrinite reflectance Easy R o The relationship is:

[0028]

[0029] Furthermore, the light hydrocarbon content after recovery The calculation formula is:

[0030]

[0031] The total hydrocarbon amount of the chromatogram after recovery M 色谱 The calculation formula is:

[0032]

[0033] Furthermore, the gas content after recovery M 气 The calculation formula is:

[0034]

[0035] The chromatographic oil content M色谱油 The calculation formula is:

[0036]

[0037] Furthermore, the oil content after recovery M 油 The calculation formula is:

[0038] M 油 =M 色谱油 +(S2-S2').

[0039] Furthermore, the step S1 specifically includes:

[0040] Step S11, placing the immature / low-mature shale sample into a quartz tube in the small-volume sealing simulation device, and filling the quartz tube with quartz sand;

[0041] Step S12, sealing the quartz tube and heating it in a heating furnace, with a starting temperature of 150° C. and a heating rate of 0.7° C. / min, and taking out the immature / low-mature shale samples at intervals for multiple times in the temperature range of 300 to 600° C. to obtain hydrocarbon products at different degrees of thermal evolution;

[0042] Step S13: using a thermal desorption gas chromatography detection device to detect the total hydrocarbon components of the hydrocarbon product, and using a gas chromatography external standard method to measure the content of lighter hydrocarbons in the total hydrocarbon components TA Cx and the content of heavier hydrocarbons TA Cy .

[0043] Furthermore, the thermal desorption gas chromatography detection device is a gas chromatograph and FID detector, a liquid chromatography analysis instrument, a magnetic mass spectrometry analysis instrument, a thermal conductivity detector TCD, an infrared detector IR or a mass spectrometry electron multiplier EM.

[0044] In the technical solution of the present invention, based on the theoretical basis that the composition of hydrocarbon generation products of source rocks is correlated with the degree of hydrocarbon generation evolution, a hydrocarbon generation simulation experiment is carried out on immature / low-mature mudstone, and the light / heavy hydrocarbon ratio K at different hydrocarbon generation simulation evolution stages is established according to the experimental test results. n and the equivalent vitrinite reflectance Easy R o The relationship between the gas-oil ratio (GOR) of hydrocarbon generation simulation products and the equivalent vitrinite reflectance Easy R was established. o The relationship between the heavy hydrocarbon content in the high-maturity shale sample Substitute the light / heavy hydrocarbon ratio K n and the equivalent vitrinite reflectance Easy R o The original light hydrocarbon content in the high-maturity shale is calculated based on the relationship between Combined with the heavy hydrocarbon content, the total chromatographic hydrocarbon content M in the high-maturity shale after recovery is obtained. 色谱 ; Then, the gas-oil ratio (GOR) and the equivalent vitrinite reflectance (Easy R) of the hydrocarbon generation simulation product were calculated. o The relationship between the total chromatographic hydrocarbon content M in high-maturity shale after recovery 色谱 Divided into two parts: gas content after recovery M 气 and chromatographic oil content M 色谱油 , and the oil content after recovery M is calculated by combining the pyrolysis hydrocarbon value S2 and the pyrolysis hydrocarbon value S2' 油 In this way, the shale oil and gas content can be accurately restored, and technical support can be provided for shale oil exploration, development and production in a timely manner. It is of great significance to the accurate description of the oil and gas content of shale and the accurate evaluation of oil and gas production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0046] Figure 1 A flow chart of a method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components provided by the present invention;

[0047] Figure 2 for Figure 1 Flow chart of step S1 in FIG.

[0048] Figure 3 This is a comparison chart of the gas content after recovery calculated according to a specific embodiment of the present invention and the gas content actually measured on site.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] In recent years, pressure coring technology has been successfully applied in many oil fields, but the difficulty of this technology is to avoid the high formation pressure and formation temperature affecting the sealing of the pressure coring tool. Therefore, it is necessary to develop more effective methods to recover the light hydrocarbons and natural gas lost in mud shale to obtain the original oil and gas content of shale. This is of great significance for the classification of shale oil and gas reservoir types, the evaluation of shale oil and gas resources, and the optimization of the "sweet spot" of horizontal wells.

[0054] In view of this, the present invention provides a method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components. Figure 1 and Figure 2 A flow chart of a method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components provided by the present invention.

[0055] See also Figure 1 The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components comprises the following steps:

[0056] Step S1, using a small volume sealed simulation device to perform a hydrocarbon generation simulation experiment on an immature / low-mature shale sample, and obtaining the hydrocarbon composition and content of the immature / low-mature shale sample at different thermal evolution degrees at a plurality of hydrocarbon generation simulation temperature points set in a temperature range of 300-600°C, wherein the hydrocarbon composition includes lighter hydrocarbons and heavier hydrocarbons, and the content of the lighter hydrocarbons is TA Cx , the content of the heavier hydrocarbons is TA Cy .

[0057] In this step, based on the theoretical basis that the composition of hydrocarbon generation products of source rocks is correlated with the degree of hydrocarbon generation evolution, a small volume sealed simulation device (MSSV) was used to carry out hydrocarbon generation simulation experiments on immature / low-mature mudstone.

[0058] It should be noted that, in the present invention, x and y are both positive integers, and y>x.

[0059] It should also be noted that, in the present invention, kerogen can also be used to carry out hydrocarbon generation simulation experiments.

[0060] In a specific embodiment of the present invention, low-mature mudstone outcropping in a certain research area in the Sichuan Basin was selected to conduct a hydrocarbon generation simulation experiment to obtain the hydrocarbon composition and content at different thermal evolution degrees.

[0061] More specifically, 5-30 mg of immature / low-mature shale samples were used to conduct hydrocarbon generation simulation experiments.

[0062] For further information, see Figure 2 , the step S1 specifically comprises:

[0063] Step S11, placing the immature / low-mature shale sample into a quartz tube in the small-volume sealing simulation device, and filling the quartz tube with quartz sand.

[0064] In this step, the quartz tube is filled with the quartz sand, so that the air in the quartz tube can be exhausted.

[0065] It should be noted that the small volume sealing simulation device is a prior art, specifically the device described in the literature Horsfield B, Disko U, Leistner F. The micro-scale simulation of maturation: outline of a new technique and its potential applications [J]. Geologische Rundschau, 1989, 78 (1): 361-373. and Wang Yifeng, Wang Dongliang, Li Zhisheng, Cui Huiying, Fang Chaohe. "MSSV" oil and gas generation simulation experimental technology [J]. Modern Scientific Instruments, 2009 (04): 115-117.

[0066] Step S12, sealing the quartz tube and heating it in a heating furnace, with a starting temperature of 150°C and a heating rate of 0.7°C / min, and taking out the immature / low-mature shale samples at intervals for multiple times in the temperature range of 300-600°C to obtain hydrocarbon products at different degrees of thermal evolution.

[0067] In this step, the quartz tube is heated by a heating furnace. The initial heating temperature of the heating furnace is 150°C (constant temperature time is 1 min), and the final heating temperature is 600°C (constant temperature time is 0 min). During the entire heating process, the heating rate is 0.7°C / min, and the immature / low-mature shale samples are taken out at intervals for multiple times in the temperature range of 300-600°C to obtain hydrocarbon products at different degrees of thermal evolution.

[0068] Step S13: using a thermal desorption gas chromatography detection device to detect the total hydrocarbon components of the hydrocarbon product, and using a gas chromatography external standard method to measure the content of lighter hydrocarbons in the total hydrocarbon components TA Cx and the content of heavier hydrocarbons TA Cy .

[0069] In this step, the total hydrocarbon fraction is divided into the content of lighter hydrocarbons TA Cx and the content of heavier hydrocarbons TA Cy , where C x represents the sum of normal alkanes containing x carbon atoms and their isomers. In addition, the gas component is C 1-5 , namely C1, C2, C3, i-C4, n-C4, i-C5, n-C5, and the oil component is C 5+ , that is, C6, C7, C8..., the gas component content can be expressed as The oil content can be expressed as

[0070] Furthermore, the thermal desorption gas chromatography detection device is a gas chromatograph and FID detector, a liquid chromatography analysis instrument, a magnetic mass spectrometry analysis instrument, a thermal conductivity detector TCD, an infrared detector IR or a mass spectrometry electron multiplier EM.

[0071] Specifically, in a specific embodiment of the present invention, the thermal desorption temperature is 300° C. and the time is 1.5-2 h.

[0072] Step S2: Calculate the gas-oil ratio GOR and light / heavy hydrocarbon ratio K of the immature / low-mature shale sample at different thermal evolution degrees according to the hydrocarbon composition and its content. n .

[0073] Furthermore, the ratio of the gas component content to the oil component content is the gas-oil ratio GOR. Therefore, the calculation formula for the gas-oil ratio GOR of the immature / low-mature shale sample at different degrees of thermal evolution is:

[0074]

[0075] The ratio of the total content of lighter hydrocarbons to the total content of heavier hydrocarbons is the light / heavy hydrocarbon ratio K n , and when C nThe total content of lighter hydrocarbons can be expressed as The total content of heavier hydrocarbons can be expressed as Therefore, the light / heavy hydrocarbon ratio K n The calculation formula is:

[0076]

[0077] In formula (2), 6≤n≤30.

[0078] It should be noted that the value of n is determined by the maximum carbon number of the residual light hydrocarbons in the shale as the lower limit, the main peak carbon of the residual hydrocarbons as the upper limit, and the components of the hydrocarbon products. 14 The light / heavy hydrocarbon ratio K is calculated as the limit n , that is, n=14, the gas-oil ratio GOR and light / heavy hydrocarbon ratio K of the immature / low-mature shale samples at different thermal evolution degrees n The calculation results are shown in Table 1 below.

[0079] Step S3: Based on the time-temperature compensation principle of chemical reaction rate and the first-order Arrhenius equation, the hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectance Easy R are constructed. o relationship curve.

[0080] Furthermore, the hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectance Easy R o The relationship curve is:

[0081]

[0082] In formula (3), w is the content of the component that does not produce chemical reaction;

[0083] t is the chemical reaction time;

[0084] k is the chemical reaction rate constant;

[0085] A is the pre-exponential factor;

[0086] e is the base of natural logarithm;

[0087] E is the activation energy, in J·mol -1 ;

[0088] R is the molar gas constant, in J·mol -1 ·K -1 ;

[0089] F is the degree of chemical reaction, and 0≤F≤1.

[0090] Step S4: according to the gas-oil ratio GOR and the light / heavy hydrocarbon ratio K n, establish the gas-oil ratio GOR, the light / heavy hydrocarbon ratio K n The equivalent vitrinite reflectance Easy R o relationship.

[0091] Furthermore, the gas-oil ratio GOR and the light / heavy hydrocarbon ratio K n The equivalent vitrinite reflectance EasyR o The relationship is:

[0092]

[0093] It should be noted that the values ​​of a, b, c, and d in the above formula (4) are obtained by fitting according to the detection results of the above steps S1 and S2. Specifically, in a specific embodiment of the present invention, the above formula (4) is combined with the fitting results to obtain:

[0094]

[0095] Step S5: Take 20-50 mg of high-maturity shale sample and perform thermal desorption gas chromatography to obtain the heavy hydrocarbon content in the high-maturity shale sample. And combined with the light / heavy hydrocarbon ratio K n Perform light hydrocarbon loss recovery calculation to obtain the light hydrocarbon content after recovery and the total hydrocarbon content of the chromatogram after recovery M 色谱 , where 6≤n≤30;

[0096] In this step, high-mature shale samples of a series of depths (2533-2554 m) obtained by drilling are selected for measurement and calculation (as shown in Table 1 below).

[0097] It should be noted that the definition of the pseudo-component in the high-maturity shale sample is the same as that in step S13 described above.

[0098] It should also be noted that according to the test results, C n+ Pseudo-component content, i.e. heavy hydrocarbon content

[0099] Specifically, in a specific embodiment of the present invention, the thermal desorption temperature is 300° C. and the time is 1.5-2 h.

[0100] The light hydrocarbon content after recovery The calculation formula is:

[0101]

[0102] The total hydrocarbon amount M of the chromatogram after recovery 色谱 The calculation formula is:

[0103]

[0104] In a specific embodiment of the present invention, the light / heavy hydrocarbon ratio K n and heavy hydrocarbon content Perform light hydrocarbon loss recovery calculation to obtain the light hydrocarbon content after recovery The total hydrocarbon content of the chromatogram after recovery M 色谱 .

[0105] Step S6: according to the gas-oil ratio GOR and the chromatographic total hydrocarbon content M 色谱 , calculate the gas content after recovery M 气 and chromatographic oil content M 色谱油 .

[0106] Furthermore, the gas content after recovery M 气 The calculation formula is:

[0107]

[0108] The chromatographic oil content M 色谱油 The calculation formula is:

[0109]

[0110] Step S7, taking 100 mg of high-maturity shale samples for rock pyrolysis detection before and after extraction, to obtain the pyrolysis hydrocarbon value S2 before extraction and the pyrolysis hydrocarbon value S2' after extraction, and combining the difference between S2 and S2' and the chromatographic oil content M 色谱油 Calculate the oil content after recovery M 油 .

[0111] Furthermore, the oil content after recovery M 油 The calculation formula is:

[0112] M 油 =M 色谱油 +(S2-S2'). (9)

[0113] In a specific embodiment of the present invention, the calculated oil content after recovery M 油 As shown in Table 1 below, the gas content M after recovery 气 Compared with the well logging gas content, the two have a good similarity (such as Figure 3 As shown), it shows that the gas content after recovery calculated by the method of calibrating and recovering shale oil and gas content using hydrocarbon generation simulation components by using hydrocarbon generation simulation method provided by the present invention is very consistent with the gas content actually tested.

[0114] In the technical solution of the present invention, based on the theoretical basis that the composition of hydrocarbon generation products of source rocks is correlated with the degree of hydrocarbon generation evolution, a hydrocarbon generation simulation experiment is carried out on immature / low-mature mudstone, and the light / heavy hydrocarbon ratio K at different hydrocarbon generation simulation evolution stages is established according to the experimental test results. n and the equivalent vitrinite reflectance Easy R o The relationship between the gas-oil ratio (GOR) of hydrocarbon generation simulation products and the equivalent vitrinite reflectance Easy R was established. o The relationship between the heavy hydrocarbon content in the high-maturity shale sample Substitute the light / heavy hydrocarbon ratio K n and the equivalent vitrinite reflectance Easy R o The original light hydrocarbon content in the high-maturity shale is calculated based on the relationship between Combined with the heavy hydrocarbon content, the total chromatographic hydrocarbon content M in the high-maturity shale is obtained. 色谱 ; Then, the gas-oil ratio (GOR) and the equivalent vitrinite reflectance (Easy R) of the hydrocarbon generation simulation product were calculated. o The relationship between the total chromatographic hydrocarbon content M in high-maturity shale after recovery 色谱 Divided into two parts: gas content after recovery M 气 and chromatographic oil content M 色谱油 , and the oil content after recovery M is calculated by combining the pyrolysis hydrocarbon value S2 and the pyrolysis hydrocarbon value S2' 油 In this way, the shale oil and gas content can be accurately restored, and technical support can be provided for shale oil exploration, development and production in a timely manner. It is of great significance to the accurate description of the oil and gas content of shale and the accurate evaluation of oil and gas production capacity.

[0115] Table 1 Shale oil and gas content recovery results

[0116]

[0117]

[0118] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components, characterized in that: The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components comprises the following steps: Step S1, using a small volume sealed simulation device to perform a hydrocarbon generation simulation experiment on an immature / low-mature shale sample, and obtaining the hydrocarbon composition and content of the immature / low-mature shale sample at different thermal evolution degrees at a plurality of hydrocarbon generation simulation temperature points set in a temperature range of 300-600°C, wherein the hydrocarbon composition includes lighter hydrocarbons and heavier hydrocarbons, and the content of the lighter hydrocarbons is TA Cx , the content of the heavier hydrocarbons is TA Cy ; Step S2: Calculate the gas-oil ratio GOR and light / heavy hydrocarbon ratio K of the immature / low-mature shale sample at different thermal evolution degrees according to the hydrocarbon composition and its content. n ; Step S3: Based on the time-temperature compensation principle of chemical reaction rate and the first-order Arrhenius equation, the hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectance Easy R are constructed. o The relationship curve of Step S4: according to the gas-oil ratio GOR and the light / heavy hydrocarbon ratio K n , establish the gas-oil ratio GOR, the light / heavy hydrocarbon ratio K n The equivalent vitrinite reflectance Easy R o relationship; Step S5: Take 20-50 mg of high-maturity shale sample and perform thermal desorption gas chromatography to obtain the heavy hydrocarbon content in the high-maturity shale sample. And combined with the light / heavy hydrocarbon ratio K n Perform light hydrocarbon loss recovery calculation to obtain the light hydrocarbon content after recovery and the total hydrocarbon content of the chromatogram after recovery M 色谱 , where 6≤n≤30; Step S6: according to the gas-oil ratio GOR and the total hydrocarbon content M of the chromatogram after recovery 色谱 , calculate the gas content after recovery M 气 and chromatographic oil content M 色谱油 ; Step S7, taking 100 mg of high-maturity shale samples for rock pyrolysis detection before and after extraction, to obtain the pyrolysis hydrocarbon value S2 before extraction and the pyrolysis hydrocarbon value S2' after extraction, and combining the difference between S2 and S2' and the chromatographic oil content M 色谱油 Calculate the oil content after recovery M 油 .

2. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 1, characterized in that: The calculation formula of the gas-oil ratio GOR is: The light / heavy hydrocarbon ratio K n The calculation formula is: Among them, 6≤n≤30.

3. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 1, characterized in that: The hydrocarbon generation simulation temperature T and the equivalent vitrinite reflectance Easy R o The relationship curve is: In the formula, w is the content of the component that does not produce chemical reaction; t is the chemical reaction time; k is the chemical reaction rate constant; A is the pre-exponential factor; e is the base of natural logarithm; E is the activation energy; R is the molar gas constant; F is the degree of chemical reaction, and 0≤F≤1.

4. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 3, characterized in that: The gas-oil ratio GOR, the light / heavy hydrocarbon ratio K n The equivalent vitrinite reflectance Easy R o The relationship is:

5. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 4, characterized in that: The light hydrocarbon content after recovery The calculation formula is: The chromatographic total hydrocarbon amount M 色谱 The calculation formula is:

6. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 5, characterized in that: The gas content after recovery M 气 The calculation formula is: The chromatographic oil content M 色谱油 The calculation formula is:

7. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 6, characterized in that: The oil content after recovery M 油 The calculation formula is: M 油 =M 色谱油 +(S2-S2')。 8. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 1, characterized in that: The step S1 specifically includes: Step S11, placing the immature / low-mature shale sample into a quartz tube in the small-volume sealing simulation device, and filling the quartz tube with quartz sand; Step S12, sealing the quartz tube and heating it in a heating furnace, with a starting temperature of 150° C. and a heating rate of 0.7° C. / min, and taking out the immature / low-mature shale samples at intervals for multiple times in the temperature range of 300 to 600° C. to obtain hydrocarbon products at different degrees of thermal evolution; Step S13: using a thermal desorption gas chromatography detection device to detect the total hydrocarbon components of the hydrocarbon product, and using a gas chromatography external standard method to measure the content of lighter hydrocarbons in the total hydrocarbon components TA Cx and the content of heavier hydrocarbons TA Cy .

9. The method for calibrating and restoring shale oil and gas content using hydrocarbon generation simulation components according to claim 8, characterized in that: The thermal desorption gas chromatography detection device is a gas chromatograph and FID detector, a liquid chromatograph analysis instrument, a magnetic mass spectrometer analysis instrument, a thermal conductivity detector TCD, an infrared detector IR or a mass spectrometer electron multiplier EM.

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