A method and device for identifying a helium-rich gas reservoir based on while-drilling helium concentration

Abstract

This invention provides a method for identifying helium-rich reservoirs based on helium concentration during drilling. The method includes: obtaining a helium-to-hydrocarbon ratio based on first helium content data in the gas extracted from the gas gathering chamber and total hydrocarbon content data from gas logging; obtaining helium volume data based on the first helium content data and the volume of gas extracted from the gas gathering chamber per unit time; obtaining formation gas volume data injected into the gas gathering chamber per unit time based on the gas volume data extracted from the gas gathering chamber and the volume of compensating air injected into the gas gathering chamber; obtaining a second helium content based on the helium volume data and the formation gas volume data; and determining the encountered layer as a helium-rich reservoir when the helium-to-hydrocarbon ratio is greater than a preset first threshold and the second content data is greater than a preset second threshold. This method can utilize both drilling-while-monitoring data and the helium-to-hydrocarbon ratio to jointly evaluate the encountered reservoir, making the calculation simpler.

Description

Technical Field

[0001] This invention relates to the field of rare gas exploration, and in particular to a method and apparatus for identifying helium-rich reservoirs based on helium concentration during drilling. Background Technology

[0002] Helium is an irreplaceable key element in modern high-tech industries and is an important strategic resource. Currently, extracting helium from helium-containing or helium-rich natural gas reservoirs remains the only way to industrially produce helium. However, before extracting helium, it is necessary to determine whether the natural gas reservoir is helium-rich. Currently, the method for confirming whether natural gas is helium-rich generally involves taking samples after well completion and sending them to a laboratory to test the helium concentration. This method is not real-time and the process is complex. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a method and apparatus for identifying helium-rich reservoirs based on helium concentration during drilling, which overcomes or at least partially solves the above problems.

[0004] In a first aspect, embodiments of the present invention provide a method for identifying helium-rich reservoirs based on helium concentration during drilling, comprising:

[0005] Based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time obtained in advance and the total hydrocarbon content data of the gas logging in advance, the helium-hydrocarbon ratio data is obtained; the gas extracted from the gas collecting chamber of the degasser includes: compensating air and formation gas; the formation gas includes: helium; the first content data is the content data of helium in the gas extracted from the gas collecting chamber of the degasser;

[0006] Based on the first content data and the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time, the volume data of helium is obtained.

[0007] Based on the pre-acquired data on the volume of gas extracted from the gas collection chamber of the degasser per unit time and the pre-acquired data on the volume of compensating air injected into the gas collection chamber of the degasser per unit time, the volume of formation gas injected into the gas collection chamber of the degasser per unit time is obtained.

[0008] Based on the volume data of helium and the volume data of the formation gas, a second helium content data is obtained; the second content data is the content data of helium in the formation gas.

[0009] By comparing the helium-hydrocarbon ratio data with a preset first discrimination threshold, and comparing the second content data with a preset second discrimination threshold, if the helium-hydrocarbon ratio is greater than the first discrimination threshold, and the second helium content data is greater than the second discrimination threshold, then the drilled layer is determined to be a helium-rich reservoir; the first discrimination threshold is the helium-hydrocarbon ratio data of the adjacent well's helium-rich reservoir; the second discrimination threshold is the helium content data of the conventional helium-rich reservoir.

[0010] In one embodiment, the first helium content data in the gas extracted from the gas collection chamber of the degasser per unit time is obtained by chromatography and / or mass spectrometry.

[0011] In one embodiment, obtaining the helium-to-hydrocarbon ratio data based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time obtained in advance and the total hydrocarbon content data of the gas logging in advance includes:

[0012] The helium-hydrocarbon ratio data is obtained by dividing the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time, which is obtained in advance, by the total hydrocarbon content data of the gas logging.

[0013] In one embodiment, obtaining the volume data of formation gas injected into the gas collection chamber of the degasser per unit time based on pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time and pre-acquired compensation air volume data injected into the gas collection chamber of the degasser per unit time includes:

[0014] By subtracting the volume data of the gas extracted from the gas collection chamber of the degasser per unit time from the volume data of the compensating air injected into the gas collection chamber of the degasser per unit time, we obtain the volume data of the formation gas injected into the gas collection chamber of the degasser per unit time.

[0015] In one embodiment, obtaining the second helium content data based on the helium volume data and the formation gas volume data includes:

[0016] The second helium content data is obtained by dividing the volume data of the helium gas by the volume data of the formation gas.

[0017] In one embodiment, the helium content data of the conventional helium-rich reservoir is in the range of 0.3% or greater.

[0018] Secondly, embodiments of the present invention provide an apparatus for identifying helium-rich reservoirs based on helium concentration during drilling, comprising:

[0019] The helium-hydrocarbon ratio calculation module is used to obtain helium-hydrocarbon ratio data based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time and the total hydrocarbon content data of the gas logging. The gas extracted from the gas collecting chamber of the degasser includes compensating air and formation gas. The formation gas includes helium. The first content data is the helium content data in the gas extracted from the gas collecting chamber of the degasser.

[0020] The helium volume calculation module is used to obtain the volume data of helium based on the first content data and the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time.

[0021] The formation gas volume calculation module is used to obtain the formation gas volume data injected into the degassing chamber per unit time based on the pre-acquired gas volume data extracted from the degassing chamber per unit time and the pre-acquired compensation air volume data injected into the degassing chamber per unit time.

[0022] The helium content data calculation module is used to obtain second helium content data based on the volume data of the helium and the volume data of the formation gas; the second content data is the content data of helium in the formation gas.

[0023] The helium-rich reservoir determination module is used to compare the helium-hydrocarbon ratio data with a preset first discrimination threshold, and to compare the second content data with a preset second discrimination threshold. If the helium-hydrocarbon ratio is greater than the first discrimination threshold, and the second helium content data is greater than the second discrimination threshold, then the drilled layer is determined to be a helium-rich reservoir. The first discrimination threshold is the helium-hydrocarbon ratio data of the adjacent well's helium-rich reservoir; the second discrimination threshold is the helium content data of the conventional helium-rich reservoir.

[0024] Thirdly, embodiments of the present invention provide a computing device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the program executed by the processor implements a method for identifying helium-rich reservoirs based on helium concentration during drilling.

[0025] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements a method for identifying helium-rich reservoirs based on helium concentration during drilling.

[0026] Fifthly, embodiments of the present invention provide a computer program product, the computer program product including a computer program, which, when executed by a processor, implements a method for identifying helium-rich reservoirs based on helium concentration during drilling.

[0027] The beneficial effects of the above-described technical solutions provided in the embodiments of the present invention include at least the following:

[0028] This invention provides a method for identifying helium-rich reservoirs based on helium concentration during drilling, comprising: obtaining helium-to-hydrocarbon ratio data based on first helium content data in gas extracted from the gas gathering chamber per unit time and total hydrocarbon content data from gas logging; obtaining helium volume data based on the first content data and the volume data of gas extracted from the gas gathering chamber per unit time; obtaining formation gas volume data injected into the gas gathering chamber per unit time based on the gas volume data extracted from the gas gathering chamber per unit time and the volume data of compensating air injected into the gas gathering chamber per unit time; obtaining second helium content data based on the helium volume data and the formation gas volume data; and determining the encountered layer as a helium-rich reservoir when the helium-to-hydrocarbon ratio data is greater than a preset first discrimination threshold and the second content data is greater than a preset second discrimination threshold. The method for identifying helium-rich reservoirs based on helium concentration during drilling provided in this invention can convert drilling detection data into volume data of helium in the reservoir formation gas. During the drilling process, the drilling detection data is processed and calculated, and the reservoir encountered is evaluated by combining the ratio of helium to total hydrocarbons. Compared with sampling and sending samples to the laboratory for helium concentration detection after well completion and production, the efficiency is greatly improved.

[0029] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 A flowchart of a method for identifying helium-rich reservoirs based on helium concentration during drilling, provided as an embodiment of the present invention;

[0033] Figure 2 This is a structural block diagram of the degasser provided in an embodiment of the present invention;

[0034] Figure 3 A flowchart for identifying helium-rich reservoirs provided in an embodiment of the present invention;

[0035] Figure 4A structural block diagram of a device for identifying helium-rich reservoirs based on helium concentration during drilling, provided in an embodiment of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Drilling fluid filter; 2. Metering pump; 3. Liquid flow sensor; 4. Stirring power source; 5. Sample gas flow sensor; 6. Compensating air flow sensor; 7. Degassing chamber; 8. Drying tube; 9. Sample pump; 10. Helium online analyzer; 11. Drilling fluid outlet tank. Detailed Implementation

[0038] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] Before introducing the method for identifying helium-rich reservoirs based on helium concentration during drilling provided in this invention, a brief introduction to degassing devices is necessary. Degassing devices are widely used in fields such as oil exploration and development. During oil drilling, various gases are mixed into the drilling fluid. The main function of a degassing device is to separate the gases from the drilling fluid, which is crucial for analyzing the composition and content of gases contained in the formation. By detecting these gases, it is possible to determine whether the formation contains valuable resources such as oil and natural gas, and to understand relevant parameters such as formation pressure.

[0040] For example, a structural block diagram of a degasser. Figure 2 As shown, the degasser's working process can be described as follows: The metering pump 2 draws drilling fluid from the drilling fluid outlet tank 11 through the drilling fluid filter 1. The drilling fluid enters the degassing chamber 7 after passing through the liquid flow sensor 3. Driven by the stirring power source 4, the stirring drilling fluid removes dissolved or free gases.

[0041] The sample pump 9 is connected to the sample gas flow sensor 5 of the degasser via a pipeline. It draws in the mixed sample gas of the ground gas and the compensating air in the degasser chamber 7 and dries the mixed sample gas through the drying tube 8. Since the sample pump 9 draws in the degasser chamber 7, air enters the degasser chamber 7 from the compensating air flow sensor 6.

[0042] The gas collecting chamber is the hollow part of the degassing chamber 7. It should be noted that the gas in the gas collecting chamber of the degasser is connected to the outside only through two ports: the mixed sample gas outlet and the air compensation port.

[0043] This invention provides a method for identifying helium-rich reservoirs based on helium concentration during drilling, the flowchart of which is shown below. Figure 1 As shown, it includes:

[0044] S11. Based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time obtained in advance and the total hydrocarbon content data of the gas logging obtained in advance, the helium-hydrocarbon ratio data is obtained; the gas extracted from the gas collecting chamber of the degasser includes: compensating air and formation gas; the formation gas includes: helium; the first content data is the content data of helium in the gas extracted from the gas collecting chamber of the degasser;

[0045] The gas extracted from the gas collection chamber of the degasser in step S11 can be, for example, a mixed sample gas.

[0046] The helium-to-hydrocarbon ratio of helium-rich gas reservoirs in the same area, which has been drilled and put into production, is used as prior information through laboratory analysis and verification. The helium-to-hydrocarbon ratio measured during drilling is used as the current value. The combination of the two can be used to determine whether the gas reservoir currently in the drilling stage is a helium-rich gas reservoir.

[0047] S12. Based on the first content data and the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time, obtain the volume data of helium.

[0048] S13. Based on the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time and the pre-acquired compensation air volume data injected into the gas collection chamber of the degasser per unit time, obtain the formation gas volume data injected into the gas collection chamber of the degasser per unit time.

[0049] S14 obtains the second helium content data based on the volume data of helium and the volume data of formation gases; the second content data is the content data of helium in formation gases.

[0050] S15. Compare the helium-to-hydrocarbon ratio data with the preset first discrimination threshold, and compare the second content data with the preset second discrimination threshold. If the helium-to-hydrocarbon ratio is greater than the first discrimination threshold, and the second helium content data is greater than the second discrimination threshold, then the drilled layer is determined to be a helium-rich reservoir. The first discrimination threshold is the helium-to-hydrocarbon ratio data of the adjacent well's helium-rich reservoir; the second discrimination threshold is the helium content data of the conventional helium-rich reservoir. The range of helium content data for the conventional helium-rich reservoir can be, for example, greater than or equal to 0.3%.

[0051] Generally, the higher the content of hydrocarbon gases such as methane (total hydrocarbons) in natural gas, the higher the helium content; there is a positive correlation between total hydrocarbon content and helium content. Therefore, if the total hydrocarbon content increases and the helium content also increases, it may be due to natural gas enrichment leading to a higher helium concentration, but the proportion of helium in the natural gas may not necessarily increase. However, if the absolute value of helium increases without an increase in total hydrocarbons, the ratio of helium to total hydrocarbons will increase. Therefore, the ratio of helium content to total hydrocarbon content is a better indicator of helium enrichment.

[0052] The formation gas in step S11 may also include, for example, hydrocarbon gases, hydrogen, carbon dioxide and hydrogen sulfide, etc., and is a mixed gas, including but not limited to helium.

[0053] The first content data in step S11 can be obtained, for example, by using chromatography and / or mass spectrometry through the helium online analysis device 10.

[0054] Chromatography is a physicochemical separation and analysis method. It separates different substances based on the difference in their partition coefficients between the stationary and mobile phases. When a mixture passes through a stationary phase (which can be a solid adsorbent or a liquid coated on a solid support) with the mobile phase (which can be a gas or a liquid), the components undergo repeated partitioning between the two phases. Due to the different partition coefficients, the retention times of each component in the stationary phase differ, thus achieving separation. For example, in paper chromatography, filter paper is the stationary phase, and the organic solvent is the mobile phase. A mixture containing multiple pigments is spotted at one end of the filter paper, which is then placed in a container filled with organic solvent. The organic solvent rises along the filter paper. The different pigments in the mixture are partitioned differently between the filter paper and the organic solvent, resulting in different migration speeds and ultimately forming different colored bands on the filter paper, thus achieving separation.

[0055] Mass spectrometry is a method that ionizes compound molecules under high vacuum conditions, and then separates and detects the ions according to their mass-to-charge ratio (m / z) using electric and magnetic fields. The ions produced by the ionized molecules gain kinetic energy under the influence of an accelerating electric field and enter a mass analyzer. The mass analyzer separates the ions based on their differences in mass-to-charge ratio, and finally, a detector detects the signal intensity of the ions to obtain a mass spectrum. Each peak in the mass spectrum represents an ion, the peak position indicates the mass-to-charge ratio of the ion, and the peak intensity is related to the relative abundance of that ion. For example, in electron bombardment ionization, a high-energy electron beam interacts with sample molecules, causing the molecules to lose an electron to form molecular ions. These molecular ions may further fragment into fragment ions. These ions are separated and detected by the mass analyzer, and the structure of the sample molecules can be inferred by analyzing the mass spectrum.

[0056] Chromatography and mass spectrometry can be used in combination. For example, chromatography can first separate the mixture, and then mass spectrometry can perform structural identification and quantitative analysis of the separated components. In the analysis of environmental organic pollutants, gas chromatography-mass spectrometry (GC-MS) can first use gas chromatography to separate complex mixtures of organic pollutants into individual components, and then mass spectrometry can perform accurate qualitative and quantitative analysis of each component to determine the type and content of pollutants, providing more precise information for environmental remediation.

[0057] In step S11 above, the helium-to-hydrogen ratio data can be calculated, for example, in the following manner:

[0058] The helium-hydrocarbon ratio data is obtained by dividing the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time obtained in advance by the total hydrocarbon content data of the gas logging.

[0059] In step S12 above, the volume data of helium can be calculated, for example, in the following manner:

[0060] The volume data of helium is obtained by multiplying the first content data with the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time.

[0061] In step S13, the volume of formation gas injected into the gas collection chamber of the degasser per unit time can be calculated, for example, in the following way:

[0062] By subtracting the volume data of the gas extracted from the gas collection chamber of the degasser per unit time from the volume data of the compensating air injected into the gas collection chamber of the degasser per unit time, we obtain the volume data of the formation gas injected into the gas collection chamber of the degasser per unit time.

[0063] In step S14, the second content data is calculated, for example, in the following manner:

[0064] The second helium content data is obtained by dividing the volume data of helium by the volume data of formation gases.

[0065] The following example further illustrates the specific implementation of the method for identifying helium-rich reservoirs based on helium concentration during drilling provided by the present invention:

[0066] The gas flow sensor 1 is used to measure the pumping rate of the sample pump in the degassing chamber 7, and the pumping rate is obtained as L1 (the unit can be, for example, L / min); the gas flow sensor 2 is used to measure the air compensation rate, and the air compensation rate is obtained as L2 (the unit can be, for example, L / min).

[0067] The sample pump delivers helium gas to the online analyzer. After analysis, the helium content in the sample gas is p (in %).

[0068] The volume of helium in the sample gas per unit time is L1×p, with units of L;

[0069] This sample gas contains natural gas extracted from the drilling fluid as well as compensating air.

[0070] The rate at which the formation gas is removed by the quantitative degasser can be calculated, i.e., L = L1 - L2 (in L / min);

[0071] Considering that the formation gas in the drilling fluid cannot be completely removed by the degasser, let the degassing efficiency of the degasser be n (in %), then the proportion of helium in the natural gas is (L1×p) / (L×n) (in %).

[0072] refer to Figure 3 As shown, in this embodiment of the invention, helium volume data and the ratio of helium to total hydrocarbons are obtained through helium concentration monitoring data during drilling and total hydrocarbon monitoring data. The volume data of gas separated from the drilling fluid (i.e., formation gas) is obtained through degasser design parameters. Based on the helium volume data and the volume data of gas separated from the drilling fluid, the proportion of helium in the separated gas is obtained. A first discrimination threshold and a second discrimination threshold are determined based on adjacent well data parameters. The ratio of helium to total hydrocarbons and the proportion of helium in the separated gas are passed through the first discrimination threshold and the second discrimination threshold to obtain the evaluation conclusion that the reservoir is rich in helium.

[0073] Based on the same inventive concept, this invention also provides a device for identifying helium-rich reservoirs based on helium concentration during drilling, the structural block diagram of which is shown below. Figure 4 As shown, it includes:

[0074] The helium-hydrocarbon ratio calculation module 41 is used to obtain helium-hydrocarbon ratio data based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time and the total hydrocarbon content data of the gas logging. The gas extracted from the gas collecting chamber of the degasser includes: compensating air and formation gas. The formation gas includes: helium. The first content data is the content data of helium in the gas extracted from the gas collecting chamber of the degasser.

[0075] The helium volume calculation module 42 is used to obtain the volume data of helium based on the first content data and the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time.

[0076] The formation gas volume calculation module 43 is used to obtain the formation gas volume data injected into the degassing chamber per unit time based on the gas volume data extracted from the degassing chamber per unit time and the volume data of the compensating air injected into the degassing chamber per unit time.

[0077] The helium content data calculation module 44 is used to obtain the second helium content data based on the volume data of helium and the volume data of formation gas; the second content data is the content data of helium in formation gas.

[0078] The helium-rich reservoir identification module 45 is used to compare the helium-hydrocarbon ratio data with a preset first discrimination threshold and the second content data with a preset second discrimination threshold. If the helium-hydrocarbon ratio is greater than the first discrimination threshold and the second helium content data is greater than the second discrimination threshold, then the drilled layer is identified as a helium-rich reservoir. The first discrimination threshold is the helium-hydrocarbon ratio data of the adjacent well's helium-rich reservoir; the second discrimination threshold is the helium content data of the conventional helium-rich reservoir.

[0079] Based on the same inventive concept, this embodiment of the invention also provides a computing device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the program executed by the processor implements a method for identifying helium-rich reservoirs based on helium concentration during drilling.

[0080] Based on the same inventive concept, embodiments of the present invention provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements a method for identifying helium-rich reservoirs based on helium concentration during drilling.

[0081] Based on the same inventive concept, embodiments of the present invention also provide a computer program product, which includes a computer program that, when executed by a processor, implements a method for identifying helium-rich reservoirs based on helium concentration during drilling.

[0082] Since the principle behind these devices is similar to that of the aforementioned method for identifying helium-rich reservoirs based on helium concentration during drilling, the implementation of these devices can be found in the implementation of the aforementioned method, and the repetitions will not be repeated.

[0083] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0084] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0085] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0086] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the functions specified in one or more boxes. Obviously, those skilled in the art can make various modifications and variations to this invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A method for identifying a helium-rich reservoir based on a while-drilling helium concentration, characterized in that, include: Based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time obtained in advance and the total hydrocarbon content data of the gas logging obtained in advance, the helium-hydrocarbon ratio data is obtained. The gas extracted from the gas collection chamber of the degasser includes: compensating air and formation gas; the formation gas includes: helium; the first content data is the content data of helium in the gas extracted from the gas collection chamber of the degasser; Based on the first content data and the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time, the volume data of helium is obtained. Based on the pre-acquired data on the volume of gas extracted from the gas collection chamber of the degasser per unit time and the pre-acquired data on the volume of compensating air injected into the gas collection chamber of the degasser per unit time, the volume of formation gas injected into the gas collection chamber of the degasser per unit time is obtained. Based on the volume data of helium and the volume data of the formation gas, a second helium content data is obtained; the second content data is the content data of helium in the formation gas. By comparing the helium-hydrocarbon ratio data with a preset first discrimination threshold, and comparing the second content data with a preset second discrimination threshold, if the helium-hydrocarbon ratio is greater than the first discrimination threshold, and the second helium content data is greater than the second discrimination threshold, then the drilled layer is determined to be a helium-rich reservoir; the first discrimination threshold is the helium-hydrocarbon ratio data of the adjacent well's helium-rich reservoir; the second discrimination threshold is the helium content data of the conventional helium-rich reservoir.

2. The method of claim 1, wherein, The first helium content data in the gas extracted from the gas collection chamber of the degasser per unit time is obtained by chromatography and / or mass spectrometry.

3. The method of claim 1, wherein, The process of obtaining helium-to-hydrocarbon ratio data based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time (pre-acquired) and the total hydrocarbon content data from the gas logging well (pre-acquired) includes: The helium-hydrocarbon ratio data is obtained by dividing the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time, which is obtained in advance, by the total hydrocarbon content data of the gas logging.

4. The method of claim 1, wherein, The step of obtaining the volume data of formation gas injected into the gas collection chamber of the degasser per unit time based on the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time and the pre-acquired compensation air volume data injected into the gas collection chamber of the degasser per unit time includes: By subtracting the volume data of the gas extracted from the gas collection chamber of the degasser per unit time from the volume data of the compensating air injected into the gas collection chamber of the degasser per unit time, we obtain the volume data of the formation gas injected into the gas collection chamber of the degasser per unit time.

5. The method of claim 1, wherein, The process of obtaining the second helium content data based on the volume data of the helium and the volume data of the formation gas includes: The second helium content data is obtained by dividing the volume data of the helium gas by the volume data of the formation gas.

6. The method as described in claim 1, characterized in that, The range of helium content data for the conventional helium-rich reservoir is greater than or equal to 0.3%.

7. A device for identifying helium-rich reservoirs based on helium concentration during drilling, characterized in that, include: The helium-hydrocarbon ratio calculation module is used to obtain helium-hydrocarbon ratio data based on the first helium content data of the gas extracted from the gas collecting chamber of the degasser per unit time obtained in advance and the total hydrocarbon content data of the gas logging in advance. The gas extracted from the gas collection chamber of the degasser includes: compensating air and formation gas; the formation gas includes: helium; the first content data is the content data of helium in the gas extracted from the gas collection chamber of the degasser; The helium volume calculation module is used to obtain the volume data of helium based on the first content data and the pre-acquired gas volume data extracted from the gas collection chamber of the degasser per unit time. The formation gas volume calculation module is used to obtain the formation gas volume data injected into the degassing chamber per unit time based on the pre-acquired gas volume data extracted from the degassing chamber per unit time and the pre-acquired compensation air volume data injected into the degassing chamber per unit time. The helium content data calculation module is used to obtain second helium content data based on the volume data of the helium and the volume data of the formation gas; the second content data is the content data of helium in the formation gas. The helium-rich reservoir determination module is used to compare the helium-hydrocarbon ratio data with a preset first discrimination threshold, and to compare the second content data with a preset second discrimination threshold. If the helium-hydrocarbon ratio is greater than the first discrimination threshold, and the second helium content data is greater than the second discrimination threshold, then the drilled layer is determined to be a helium-rich reservoir. The first discrimination threshold is the helium-hydrocarbon ratio data of the adjacent well's helium-rich reservoir; the second discrimination threshold is the helium content data of the conventional helium-rich reservoir.

8. A computing device, characterized in that, include: The memory, the processor, and the computer program stored in the memory and executable on the processor, wherein the program executed by the processor implements the method for identifying helium-rich reservoirs based on helium concentration during drilling as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method for identifying helium-rich reservoirs based on helium concentration during drilling, as described in any one of claims 1-6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the method for identifying helium-rich reservoirs based on helium concentration during drilling as described in any one of claims 1-6.

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