Method and device for determining the operating performance of a screw pump

Abstract

The application provides a screw pump operation performance determination method and device, and belongs to the technical field of oil and gas exploitation. The screw pump is used for conveying medium in an oil well to outside of the oil well. The method comprises the following steps: acquiring the pump bottom time length, pump service life and pump actual operation time length of the screw pump, and the well life and well production time length of the oil well; obtaining the pump opening time rate and effective pump opening time rate of the screw pump, and the well opening time rate and effective well opening time rate of the oil well based on the pump bottom time length, pump service life and pump actual operation time length of the screw pump, and the well life and well production time length of the oil well; and determining the screw pump operation performance based on the pump opening time rate and effective pump opening time rate of the screw pump, and the well opening time rate and effective well opening time rate of the oil well. The screw pump operation performance determination method and device have the advantages of simple calculation method, can comprehensively analyze the operation performance of the screw pump, and provide guidance for subsequent oil and gas exploitation.

Description

Technical Field

[0001] This invention relates to the field of oil and gas extraction technology, specifically to a method for determining the operating performance of a screw pump, a device for determining the operating performance of a screw pump, and a machine-readable storage medium. Background Technology

[0002] After its successful development in the late 1920s, the screw pump was first applied to heavy oil extraction in the 1980s, and subsequently gradually expanded into the field of oil and gas extraction technology. The screw pump is a special type of positive displacement pump, consisting of a stator and a rotor. The rotor, with its single-helix structure, forms an interference fit within the stator, which has a double-helix internal structure. The stator lead is twice the rotor lead. As the rotor rotates, a series of 180-degree-spaced sealed chambers are formed inside the stator from the pump suction port to the discharge port. The formation of one sealed chamber and the disappearance of the other sealed chamber are synchronous, achieving continuous and stable delivery of the suctioned liquid.

[0003] In existing technologies, there are many methods for evaluating the operating performance of screw pumps, typically using pump failure index, average pump life, average pump failure time, and number of failures per unit pump operating time. However, current evaluations of screw pump operating performance are limited to the screw pump itself, which has certain limitations and is not comprehensive enough. Given that screw pumps operate inside oil and gas wells, combining well production data can more accurately provide a comprehensive understanding of screw pump operating performance. Summary of the Invention

[0004] The purpose of this invention is to provide a method and apparatus for determining the operating performance of a screw pump, so as to at least solve the problem that the current evaluation of the operating performance of screw pumps is limited to the screw pump itself, which has certain limitations and is not comprehensive enough.

[0005] To achieve the above objectives, a first aspect of the present invention provides a method for determining the operating performance of a screw pump, wherein the screw pump is used to transport media from inside an oil well to outside the oil well, the method comprising:

[0006] Obtain the time the screw pump spends at the bottom of the well, its service life, and its actual operating time, as well as the well life and well production time of the oil well;

[0007] Based on the time the screw pump spends at the bottom of the well, the pump's service life, and the actual operating time of the pump, as well as the well life and well production time of the oil well, the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the oil well are obtained.

[0008] The operating performance of the screw pump is determined based on the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the oil well.

[0009] Optionally, the screw pump's operating performance, from best to worst, includes three levels: first level, second level, and third level. The method further includes:

[0010] If the operating performance of the screw pump is determined to be at level two or three, the corresponding operating performance improvement strategy is invoked based on the operating performance of the screw pump to adjust the operating parameters of the screw pump and the production parameters of the oil well. The operating performance improvement strategy includes the control parameters of the screw pump and the production control parameters of the oil well.

[0011] Optionally, the pump's time at the bottom of the well is the time it takes for the screw pump to be lowered into the well and then raised to the surface;

[0012] The service life of the pump is the time from the start of operation of the screw pump to its final shutdown.

[0013] The actual operating time of the pump is the duration during which the daily water production is greater than or equal to the preset water production.

[0014] The well lifespan is the time from when the oil well begins production until it is finally shut down.

[0015] The well production duration is the total number of days in which the daily gas production of the oil well is greater than or equal to the preset gas production and / or the daily water production is greater than or equal to the preset water production.

[0016] Optionally, based on the screw pump's time at the bottom of the well, pump lifespan, and actual pump operating time, as well as the well lifespan and well production time of the oil well, the screw pump's start-up rate and effective start-up rate, and the oil well's start-up rate and effective start-up rate are obtained, including:

[0017] Based on the time the screw pump spends at the bottom of the well and the pump's service life, the pump start-up rate of the screw pump is determined.

[0018] Based on the service life and actual operating time of the screw pump, the effective pump start-up rate of the screw pump is determined.

[0019] Based on the well life and well production time of the oil well, the well opening rate of the oil well is determined;

[0020] The effective well opening rate of the oil well is determined based on the actual operating time of the screw pump and the well production time of the oil well.

[0021] Optionally, the operating rate of the screw pump is determined based on the pump's time at the bottom of the well and its service life, including:

[0022] The pump start-up rate of the screw pump is calculated using the following formula:

[0023]

[0024] Where η1 is the operating rate of the screw pump; T泵寿命,i T represents the service life of a screw pump. 井底,i This refers to the time the screw pump spends at the bottom of the well.

[0025] Optionally, based on the pump lifespan and actual operating time of the screw pump, the effective pump start-up rate of the screw pump is determined, including:

[0026] The effective pump start-up rate of the screw pump is calculated using the following formula:

[0027]

[0028] Where η2 is the effective pump start-up rate of the screw pump; T 实际,i T represents the actual operating time of the screw pump. 泵寿命,i This refers to the service life of the screw pump.

[0029] Optionally, the well opening rate is determined based on the well life and well production time of the oil well, including:

[0030] The well opening rate of the oil well was calculated using the following formula:

[0031]

[0032] Where η3 is the well opening rate; T 生产 T is the well production time of an oil well. 井寿命 This refers to the well life of an oil well.

[0033] Optionally, based on the actual operating time of the screw pump and the well production time of the oil well, the effective well opening rate of the oil well is determined, including:

[0034] The effective well opening rate of the oil well was calculated using the following formula:

[0035]

[0036] Where η4 is the effective well opening rate of the oil well; T 实际,i T represents the actual operating time of the screw pump. 生产 This refers to the well production time of an oil well.

[0037] A second aspect of the present invention provides a device for determining the operating performance of a screw pump, wherein the screw pump is used to transport media from inside an oil well to outside the oil well, and each oil well includes at least two screw pumps, the device comprising:

[0038] The initial parameter acquisition module is used to acquire the pump's time at the bottom of the well, pump lifespan, and actual pump running time, as well as well lifespan and well production time.

[0039] The intermediate parameter determination module is used to obtain the pump start-up rate and effective start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate, based on the pump bottoming time, pump life and actual pump running time, well life and well production time of the screw pump.

[0040] The operating performance determination module is used to determine the operating performance of the screw pump based on the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the well.

[0041] On the other hand, the present invention provides a machine-readable storage medium storing instructions for causing a machine to execute the screw pump operating performance determination method described above.

[0042] This technical solution targets each oil well by acquiring the time the screw pump spends at the bottom of the well, its service life, and its actual operating time, as well as the well's life and production time. It then calculates the screw pump's start-up rate and effective start-up rate, and the oil well's start-up rate and effective start-up rate, thereby determining the screw pump's operating performance. This solution features a simple calculation method, enabling a comprehensive analysis of the screw pump's operating performance and providing guidance for subsequent oil and gas extraction.

[0043] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0045] Figure 1 This is a flowchart of the method for determining the operating performance of a screw pump provided by the present invention;

[0046] Figure 2 This is a schematic diagram of the first cross-sectional structure of the screw pump provided by the present invention;

[0047] Figure 3 This is a schematic diagram of the second cross-sectional structure of the screw pump provided by the present invention;

[0048] Figure 4 This is a schematic diagram showing the relationship between the pump's time at the bottom of the well, the pump's service life, and the actual operating time of the screw pump provided by this invention, as well as the well life and well production time of the oil well.

[0049] Figure 5 This is a schematic diagram of the screw pump operating performance determination device provided by the present invention;

[0050] Figure 6This is a schematic diagram of the initial pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the oil well provided by the present invention;

[0051] Figure 7 This is a schematic diagram of the adjusted screw pump start-up rate and effective start-up rate, as well as the well start-up rate and effective well start-up rate of the oil well provided by the present invention.

[0052] Explanation of reference numerals in the attached figures

[0053] 10 - Initial parameter acquisition module; 20 - Intermediate parameter determination module;

[0054] 30 - Performance Determination Module. Detailed Implementation

[0055] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0056] Figure 1 This is a flowchart of the method for determining the operating performance of a screw pump provided by the present invention; Figure 2 This is a schematic diagram of the first cross-sectional structure of the screw pump provided by the present invention; Figure 3 This is a schematic diagram of the second cross-sectional structure of the screw pump provided by the present invention; Figure 4 This is a schematic diagram showing the relationship between the pump's time at the bottom of the well, the pump's service life, and the actual operating time of the screw pump provided by this invention, as well as the well life and well production time of the oil well. Figure 5 This is a schematic diagram of the screw pump operating performance determination device provided by the present invention; Figure 6 This is a schematic diagram of the initial pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the oil well provided by the present invention; Figure 7 This is a schematic diagram of the adjusted screw pump start-up rate and effective start-up rate, as well as the well start-up rate and effective well start-up rate of the oil well provided by the present invention.

[0057] Example 1

[0058] like Figure 1-4 As shown in the figure, this embodiment provides a method for determining the operating performance of a screw pump, wherein the screw pump is used to transport media inside the oil well to the outside of the oil well, and the method includes:

[0059] Step 1: Obtain the time the screw pump spends at the bottom of the well, the pump's service life, and the actual operating time of the pump, as well as the well life and well production time of the oil well;

[0060] Specifically, a screw pump is used to transport media from inside an oil well to outside the well, and its structure is as follows: Figure 2-3As shown, due to the limited lifespan of screw pumps and the existence of special circumstances during use that can lead to pump damage, replacement with a new screw pump is necessary. Therefore, multiple screw pumps may be used in a single oil well. In this embodiment, during the analysis, as... Figure 4 As shown, for each oil well, the pump bottoming time, pump lifespan, and actual pump running time of all screw pumps used in that oil well are obtained, as well as the overall well lifespan and well production time of the oil well. Based on the obtained pump bottoming time, pump lifespan, and actual pump running time of the screw pumps, as well as the well lifespan and well production time of the oil well, the starting time rate and effective starting time rate of the screw pumps, as well as the starting time rate and effective starting time rate of the oil well, are obtained. Finally, the operating performance of the screw pumps is determined.

[0061] The pump's time at the bottom of the well is the time from when the screw pump is lowered into the well to when it is pulled to the surface; the pump's service life is the time from when the screw pump starts running to when it is finally stopped; the pump's actual running time is the time during which the daily water production is greater than or equal to the preset water production; the well's lifespan is the time from when the well starts producing to when it is finally shut down; and the well's production time is the total number of days during which the well's daily gas production is greater than or equal to the preset gas production and / or daily water production is greater than or equal to the preset water production. For pumps still running by the data cutoff date, that date is assumed to be the last time the pump was stopped; for pumps still running by the data cutoff date, that date is assumed to be the time the pump was pulled to the surface; for pumps shut down before the data cutoff date but not yet pulled to the surface, the shut-down date is assumed to be the time the pump was pulled to the surface; and for wells still producing by the data cutoff date, that date is assumed to be the well shut-down date.

[0062] Step 2: Based on the time the screw pump spends at the bottom of the well, the pump's service life, and the actual operating time of the pump, as well as the well life and well production time of the oil well, obtain the screw pump's start-up rate and effective start-up rate, as well as the oil well's start-up rate and effective start-up rate.

[0063] Specifically, the steps to obtain the start-up rate and effective start-up rate of the screw pump, as well as the start-up rate and effective start-up rate of the oil well, are as follows:

[0064] Based on the time the screw pump spends at the bottom of the well and the pump's service life, the pump start-up rate of the screw pump is determined.

[0065] Based on the service life and actual operating time of the screw pump, the effective pump start-up rate of the screw pump is determined.

[0066] Based on the well life and well production time of the oil well, the well opening rate of the oil well is determined;

[0067] The effective well opening rate of the oil well is determined based on the actual operating time of the screw pump and the well production time of the oil well.

[0068] More specifically, based on the time the screw pump spends at the bottom of the well and its service life, the pump start-up rate of the screw pump is determined, including:

[0069] The pump start-up rate of the screw pump is calculated using the following formula:

[0070]

[0071] Where η1 is the operating rate of the screw pump; T 泵寿命,i T represents the service life of a screw pump. 井底,i This refers to the time the screw pump spends at the bottom of the well.

[0072] More specifically, based on the service life and actual operating time of the screw pump, the effective pump start-up rate of the screw pump is determined, including:

[0073] The effective pump start-up rate of the screw pump is calculated using the following formula:

[0074]

[0075] Where η2 is the effective pump start-up rate of the screw pump; T 实际,i T represents the actual operating time of the screw pump. 泵寿命,i This refers to the service life of the screw pump.

[0076] More specifically, based on the well life and well production duration of the oil well, the well opening rate is determined, including:

[0077] The well opening rate of the oil well was calculated using the following formula:

[0078]

[0079] Where η3 is the well opening rate; T 生产 T is the well production time of an oil well. 井寿命 This refers to the well life of an oil well.

[0080] More specifically, based on the actual operating time of the screw pump and the well production time of the oil well, the effective well opening rate of the oil well is determined, including:

[0081] The effective well opening rate of the oil well was calculated using the following formula:

[0082]

[0083] Where η4 is the effective well opening rate of the oil well; T 实际,i T represents the actual operating time of the screw pump. 生产 This refers to the well production time of an oil well.

[0084] Step 3: Determine the operating performance of the screw pump based on the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the oil well.

[0085] Specifically, in this embodiment, the timeliness of well workover operations can be determined by the pump start-up rate; the reasonableness of pump ineffective operation time / shutdown time can be determined by the effective pump start-up rate; the reasonableness of well ineffective production time / shutdown time can be determined by the well start-up rate; and the reasonableness of well inefficient production time can be determined by the effective well start-up rate. Thus, the operating performance of the screw pump can be determined by the screw pump start-up rate and effective pump start-up rate, as well as the well start-up rate and effective well start-up rate.

[0086] More specifically, the operating performance of screw pumps, from best to worst, includes three levels: Level 1 (excellent), Level 2 (qualified), and Level 3 (unqualified). The qualified standard for the screw pump's start-up rate is the first standard threshold; the qualified standard for the effective start-up rate is the second standard threshold; the qualified standard for the oil well's well opening rate is the third standard threshold; and the qualified standard for the effective well opening rate is the fourth standard threshold. Correspondingly, when the screw pump's start-up rate meets the first standard threshold, the effective start-up rate meets the second standard threshold, and the oil well's well opening rate meets the third standard threshold and the effective well opening rate meets the fourth standard threshold, the screw pump's operating performance is classified as Level 1. Similarly, when any two of the four parameters—the screw pump's start-up rate and effective start-up rate, and the oil well's start-up rate and effective start-up rate—fail to meet the corresponding standard thresholds, the screw pump's operating performance is at level two. Adjustments to the screw pump control parameters and oil well production control parameters based on the parameters that do not meet the corresponding standard thresholds are required, according to the corresponding performance improvement strategy. Likewise, when any three or all four of the four parameters—the screw pump's start-up rate and effective start-up rate, and the oil well's start-up rate and effective start-up rate—fail to meet the corresponding standard thresholds, the screw pump's operating performance is at level three. Adjustments to the screw pump control parameters and oil well production control parameters based on the parameters that do not meet the corresponding standard thresholds are required, according to the corresponding performance improvement strategy.

[0087] Example 2

[0088] After determining the screw pump operating performance through Example 1, the screw pump operating performance is categorized from best to worst as follows: Level 1, Level 2, and Level 3. If the screw pump operating performance is determined to be Level 2 or Level 3, a corresponding performance improvement strategy is invoked based on this performance. This involves adjusting the screw pump operating parameters and oil well production parameters. The performance improvement strategy includes screw pump control parameters and oil well production control parameters to improve the screw pump's operating performance, thereby increasing yield, etc. In this example, the screw pump operating performance is categorized from best to worst as follows: Level 1, Level 2, and Level 3, where Level 1 is excellent, Level 2 is acceptable, and Level 3 is unacceptable. When at Level 1, it indicates that the screw pump control parameters and oil well production control parameters are very suitable and require no adjustment. When at Level 2, it indicates that a small portion of the screw pump control parameters and oil well production control parameters require adjustment. When at Level 3, it indicates that most of the screw pump control parameters and oil well production control parameters require adjustment. Furthermore, the performance of the screw pump is assessed by setting qualification standards for four parameters: the screw pump's start-up rate and effective start-up rate, as well as the well's opening rate and effective opening rate. The qualification standard for the screw pump's start-up rate is the first standard threshold; the qualification standard for the effective start-up rate is the second standard threshold; the qualification standard for the well's opening rate is the third standard threshold; and the qualification standard for the effective opening rate is the fourth standard threshold. Correspondingly, when the screw pump's start-up rate meets the first standard threshold, the effective start-up rate meets the second standard threshold, and the well's opening rate meets the third standard threshold and the effective opening rate meets the fourth standard threshold, the screw pump's performance is classified as Level 1. Similarly, when any two of the four parameters—the screw pump's start-up rate and effective start-up rate, and the oil well's start-up rate and effective start-up rate—fail to meet the corresponding standard thresholds, the screw pump's operating performance is at level two. Adjustments to the screw pump control parameters and oil well production control parameters based on the parameters that do not meet the corresponding standard thresholds are required, according to the corresponding performance improvement strategy. Likewise, when any three or all four of the four parameters—the screw pump's start-up rate and effective start-up rate, and the oil well's start-up rate and effective start-up rate—fail to meet the corresponding standard thresholds, the screw pump's operating performance is at level three. Adjustments to the screw pump control parameters and oil well production control parameters based on the parameters that do not meet the corresponding standard thresholds are required, according to the corresponding performance improvement strategy.

[0089] Among these strategies, the operational performance improvement strategies are derived from historical data fitting and expert experience summarization, and then converted into machine language for storage. Correspondingly, the operational performance improvement strategies for low pump start-up rates include selecting the optimal pump type to extend the screw pump's service life; and pre-planning mobile well workover personnel to ensure timely operation after pump failure. The operational performance improvement strategies for low effective pump start-up rates include strengthening pump operation management and timely identification of pump failures; and rationally planning surface water treatment capacity to ensure that produced water can be treated in a timely manner, thereby achieving continuous pump operation and production. The operational performance improvement strategies for low well start-up rates include optimizing well completion types (e.g., using expandable packer completions) to ensure stable and high well production at the source; and improving on-site operational levels (e.g., shortening well workover time and rationally setting wellhead pressure) to reduce unnecessary shut-in time. The operational performance improvement strategies for low effective well start-up rates include rationally planning the receiving capacity of surface gas gathering devices to ensure that produced gas can be processed in a timely manner, thereby achieving continuous production.

[0090] Example 3

[0091] like Figure 5 As shown, this embodiment provides a device for determining the operating performance of a screw pump. The screw pump is used to transport media from inside the oil well to outside the oil well, and includes:

[0092] The initial parameter acquisition module 10 is used to acquire the pump's time at the bottom of the well, pump lifespan, and actual pump running time, as well as the well lifespan and well production time.

[0093] The intermediate parameter determination module 20 is used to obtain the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate, based on the pump bottoming time, pump life and actual pump running time, well life and well production time of the screw pump.

[0094] The operating performance determination module 30 is used to determine the operating performance of the screw pump based on the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the well.

[0095] Example 4

[0096] This invention also provides a machine-readable storage medium storing instructions that cause a machine to execute the screw pump operating performance determination method described above.

[0097] Example 5

[0098] In this embodiment, data from 55 pump operation cycles of 29 wells in an example gas field were analyzed. The data cutoff date was August 31, 2021, and the upper limit of water production metering error was 0.2 m³ / d. The qualified standard for the screw pump start-up rate was the first standard threshold, with a value of 80%; the qualified standard for the effective start-up rate was the second standard threshold, with a value of 80%; the qualified standard for the oil well start-up rate was the third standard threshold, with a value of 85%; and the qualified standard for the effective start-up rate was the fourth standard threshold, with a value of 85%. The pump's time at the bottom of the well, pump lifespan, and actual pump operating time, as well as the oil well's well lifespan and well production time were obtained. Figure 6 As shown, the calculation results indicate that the screw pump's start-up rate, effective start-up rate, and the well's start-up rate and effective start-up rate are 72%, 77.3%, 81.1%, and 69.9%, respectively. A calculated value of 100% for all four parameters represents the theoretical optimal state of pump performance, but this is impossible to achieve in field operation. However, higher values ​​indicate better pump performance. Since the screw pump's start-up rate, effective start-up rate, and the well's start-up rate and effective start-up rate are all below the corresponding standard thresholds, the screw pump's performance is classified as level three. Based on these results, four problems were identified in the screw pump operation of the example gas field: untimely well workover operations, prolonged pump ineffective operation / shutdown time, prolonged well ineffective production / shutdown time, and prolonged inefficient production time. By combining the actual field conditions, the countermeasures in step 104 were specifically selected, and the screw pump control parameters and well production control parameters were adjusted and implemented. One year later, the screw pump's performance was reassessed. Calculation results show that the pump start-up rate, effective pump start-up rate, well start-up rate, and effective well start-up rate are 82.1%, 87.7%, 93.4%, and 79.9%, respectively. Figure 7 As shown. By Figure 7 The data in Figure 6 The data comparison shows that all four parameter values ​​have increased, indicating that the measures are very effective. Furthermore, the calculation results show that the pump start-up rate, effective pump start-up rate, well start-up rate, and effective well start-up rate meet the corresponding standard thresholds, and the screw pump operating performance is at the first level. These results demonstrate that the method of this invention can comprehensively analyze and determine the operating performance of screw pumps, identify some hidden problems in screw pump and well production operations, and provide effective solutions.

[0099] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0100] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe the various possible combinations.

[0101] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the embodiments of the present invention, they should also be regarded as the content disclosed by the embodiments of the present invention.

Claims

1. A method for determining the operating performance of a screw pump, wherein the screw pump is used to transport media from inside an oil well to outside the oil well, characterized in that, The method includes: The following data are collected: pump time at the bottom of the well, pump lifespan, and actual pump operating time; well lifespan and well production time; wherein, the pump time at the bottom of the well is the time from when the screw pump is lowered into the well to when it is raised to the surface; the pump lifespan is the time from when the screw pump starts running to when it is finally stopped; the actual pump operating time is the time during which the daily water production is greater than or equal to the preset water production; the well lifespan is the time from when the oil well starts producing to when it is finally shut down; and the well production time is the total number of days during which the daily gas production is greater than or equal to the preset gas production and / or the daily water production is greater than or equal to the preset water production. Based on the time the screw pump spends at the bottom of the well, the pump's service life, and the actual operating time of the pump, as well as the well life and well production time of the oil well, the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the oil well are obtained. Based on the starting time rate and effective starting time rate of the screw pump, as well as the starting time rate and effective starting time rate of the oil well, the operating performance of the screw pump is determined; The starting rate of the screw pump is calculated using the following formula: in, The operating rate of the screw pump; This refers to the service life of the screw pump. This refers to the time the screw pump spends at the bottom of the well. The effective pump start-up rate of the screw pump is calculated using the following formula: in, The effective pump start-up rate of the screw pump; This refers to the actual running time of the screw pump. This refers to the service life of the screw pump. The well opening rate of the oil well was calculated using the following formula: in, This refers to the well opening rate of the oil well; The well production time of the oil well; The lifespan of an oil well; The effective well opening rate of the oil well was calculated using the following formula: in, The effective well opening rate of the oil well; This refers to the actual running time of the screw pump. This refers to the well production time of an oil well.

2. The method according to claim 1, characterized in that, The screw pump's operating performance, from best to worst, includes three levels: first, second, and third. The method further includes: If the operating performance of the screw pump is determined to be at level two or three, the corresponding operating performance improvement strategy is invoked based on the operating performance of the screw pump to adjust the operating parameters of the screw pump and the production parameters of the oil well. The operating performance improvement strategy includes the control parameters of the screw pump and the production control parameters of the oil well.

3. A screw pump operating performance determination device, used to execute the screw pump operating performance determination method according to any one of claims 1-2, wherein the screw pump is used to transport media from inside the oil well to outside the oil well, characterized in that, The device includes: The initial parameter acquisition module is used to acquire the time the screw pump spends at the bottom of the well, the pump's service life, and the actual operating time of the pump, as well as the well's life and well production time. The intermediate parameter determination module is used to obtain the pump start-up rate and effective start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate, based on the pump bottoming time, pump life and actual pump running time, well life and well production time of the screw pump. The operating performance determination module is used to determine the operating performance of the screw pump based on the pump start-up rate and effective pump start-up rate of the screw pump, as well as the well start-up rate and effective well start-up rate of the well.

4. A machine-readable storage medium storing instructions for causing a machine to perform the screw pump operating performance determination method according to any one of claims 1-2.

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