One-trip cleaning and scraping packing tool and using method thereof

Abstract

The invention discloses a one-trip type cleaning and scraping packing tool and a using method thereof, and belongs to the technical field of underground operation, the one-trip type cleaning and scraping packing tool comprises a shell, a packing assembly is arranged on the shell, and the one-trip type cleaning and scraping packing tool further comprises a cleaning and scraping assembly and a cleaning control system; the cleaning control system comprises an image acquisition module, an image analysis unit, a cleaning and scraping demand analysis module, a cleaning and scraping radius analysis unit and a cleaning and scraping control module; the cleaning and scraping assembly and the packing assembly are integrated, one-trip operation of cleaning and scraping and packing is achieved, the well descending frequency is remarkably reduced, the operation cost and time are reduced, and meanwhile the secondary damage risk of the well wall is reduced; meanwhile, well wall optical images can be collected in real time through the image obtaining module, the well wall state analysis model and the cleaning and scraping requirement judgment module are combined, the well wall roughness and sediment distribution are dynamically evaluated, the cleaning and scraping radius set value is automatically generated, accurate and self-adaptive cleaning and scraping operation is achieved, and the consistency of the cleaning effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of downhole operations, and particularly relates to a one-trip scraping and sealing tool and its usage method. Background Art

[0002] In downhole operations such as oil and natural gas, scraping the sediment on the wellbore and effectively sealing it are key steps to ensure operation safety and efficiency.

[0003] Traditional techniques usually adopt split tools, that is, first lower the scraping tool to clean the wellbore, and then lower the sealing tool for sealing. This leads to a cumbersome operation process, long time consumption, and the risk of tool jamming and wellbore damage is increased due to multiple downhole operations.

[0004] In addition, existing scraping tools mostly rely on manual experience to adjust scraping parameters and lack the ability to analyze the wellbore state in real time, resulting in unstable cleaning effects and inability to accurately adapt to different well conditions; while when there are sediments or unevenness on the wellbore, the sealing tool is prone to problems such as poor fitting of the sealing rubber cylinder and sealing failure. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a one-trip scraping and sealing tool and its usage method, which solves the above problems.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A one-trip scraping and sealing tool includes a housing, and a sealing assembly is provided on the housing; this sealing tool further includes:

[0007] A scraping assembly, which is arranged on one side of the sealing assembly and is used to clean the redundant sediment on the wellbore to keep the wellbore flat;

[0008] A cleaning control system, which is used to adjust the cleaning radius when the scraping assembly cleans the wellbore;

[0009] Among them, the cleaning control system specifically includes:

[0010] An image acquisition module, which is used to acquire the optical image of the wellbore at the target sealing location;

[0011] An image analysis unit, which is used to establish an analysis model of the wellbore state based on the optical image of the wellbore and generate an evaluation index of the wellbore state;

[0012] A scraping requirement analysis module, which is used to judge whether the wellbore at the target sealing location needs to be scraped according to the evaluation index of the wellbore state;

[0013] A scraping radius analysis unit is used to obtain the wellbore centrifugal distance value at the target isolation location, establish a scraping radius analysis model, and generate a scraping radius setting value; wherein, the wellbore centrifugal distance value refers to the spacing value between the wellbore and the scraping assembly.

[0014] A scraping control module is used to control the working radius of the scraping assembly according to the scraping radius setting value.

[0015] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0016] Further technical solution: The isolation assembly specifically includes:

[0017] A sealing rubber cylinder, which is slidably arranged on one side of the housing;

[0018] An upper extrusion member, which is arranged on one side of the sealing rubber cylinder, and the upper extrusion member is slidably connected to the housing;

[0019] A lower extrusion member, which is arranged on one side of the sealing rubber cylinder.

[0020] Further technical solution: The scraping assembly specifically includes:

[0021] A rotating member, which is rotatably arranged on one side of the housing;

[0022] A fixing member, which is fixedly arranged on one side of the rotating member;

[0023] A scraper, which is slidably arranged on the fixing member;

[0024] An adjusting structure, which is respectively connected to the fixing member and the scraper.

[0025] Further technical solution: The adjusting structure includes:

[0026] A fixing member, which is fixedly arranged on one side of the fixing member;

[0027] A slider, which is fixedly arranged on one side of the scraper;

[0028] A lead screw, which is arranged on one side of the scraper; one end of the lead screw is rotatably connected to the fixing member, and the lead screw is threadedly connected to the slider.

[0029] Further technical solution: The one-trip scraping and isolating tool further includes:

[0030] A limiting assembly, which is used to adjust the compression state of the isolation assembly;

[0031] The limiting assembly specifically includes:

[0032] A limiting shell, wherein the limiting shell is slidably disposed on one side of the housing;

[0033] A first shear pin, two ends of which are respectively arranged on the limiting housing and the shell;

[0034] a second shear pin, the second shear pin being slidably disposed in the limiting housing;

[0035] a first elastic member, wherein the first elastic member is disposed on one side of the second shear pin, and one end of the first elastic member is in contact with and connected to the second shear pin;

[0036] A clamping piece is slidably arranged on one side of the shell, a one-way sliding tooth groove is arranged on one side of the clamping piece, and a limiting groove is arranged on the other side of the clamping piece.

[0037] Further technical solution: The one-trip cleaning and packing tool also includes:

[0038] A setting assembly, the setting assembly being arranged on one side of the packing assembly and being used for fixing the shell before the packing assembly is used for packing;

[0039] The setting assembly specifically comprises:

[0040] Slips, the slips being arranged on one side of the shell;

[0041] An upper cone, the upper cone being arranged on one side of the packing assembly; the upper cone being slidably connected to the shell, and one side of the upper cone being an inclined surface, and the inclined surface of the upper cone being in contact with the slip;

[0042] A lower cone, the lower cone is fixedly arranged on the shell, and one side of the lower cone is an inclined surface, and the inclined surface of the lower cone is in contact with the slip;

[0043] A sleeve, the sleeve is fixedly disposed on the housing and is slidably connected to the slip;

[0044] A second elastic member, wherein the second elastic member is arranged on one side of the shell, and two ends of the second elastic member are fixedly connected to the slip and the shell respectively.

[0045] Further technical solution: The image data analysis unit specifically includes:

[0046] An image segmentation module is used to divide the optical image of the wellbore wall at the target isolation location into a number of regional images and mark them as regional images;

[0047] A brightness contrast module, which is used to determine whether a regional image belongs to a rough area according to the brightness of the regional image;

[0048] A deviation analysis module, which is used to obtain the brightness deviation value of the rough area and generate a brightness deviation index; wherein, the brightness deviation value of the rough area refers to the difference between the brightness of the rough area and the brightness of the adjacent regional image;

[0049] A distribution evaluation module, which is used to obtain the number of rough areas and generate a rough area distribution evaluation index;

[0050] A state analysis module, which is used to establish a wellbore state analysis model according to the brightness deviation index and the rough area distribution evaluation index, and generate a wellbore state evaluation index.

[0051] A further technical solution: The specific generation method of the brightness deviation index is as follows:

[0052] Obtain the brightness deviation value of the rough area and generate a brightness average difference value; wherein, the brightness average difference value refers to the average value of the brightness deviation values of all rough areas;

[0053] Generate a brightness average difference deviation value according to the brightness average difference value and the brightness deviation threshold; wherein, the brightness average difference deviation value refers to the difference between the brightness average difference value and the brightness deviation threshold;

[0054] Generate a brightness deviation index according to the brightness average difference deviation value; wherein, the brightness deviation index refers to the ratio between the brightness average difference deviation value and the brightness deviation threshold;

[0055] The specific generation method of the rough area distribution evaluation index is as follows:

[0056] Obtain the number of rough areas and generate a quantity distribution proportion; wherein, the quantity distribution proportion refers to the ratio between the number of rough areas and the total number of regional images;

[0057] Generate a quantity distribution proportion difference value according to the quantity distribution proportion; wherein, the quantity distribution proportion difference value refers to the difference between the quantity distribution proportion and the quantity distribution proportion warning value;

[0058] Generate a rough area distribution evaluation index according to the quantity distribution proportion difference value; wherein, the rough area distribution evaluation index refers to the ratio between the quantity distribution proportion difference value and the quantity distribution proportion warning value.

[0059] A further technical solution: The scraping radius analysis unit specifically includes:

[0060] A centrifugal distance data acquisition module, which is used to obtain the wellbore centrifugal distance value of the target pack-off location;

[0061] A centrifugal distance analysis module, configured to generate a centrifugal distance recommendation value according to the wellbore centrifugal distance value at the target isolation location;

[0062] A scraping radius analysis module, configured to establish a scraping radius analysis model and generate a scraping radius setting value according to the centrifugal distance recommendation value;

[0063] The specific generation method of the centrifugal distance recommendation value is as follows:

[0064] Generate a centrifugal distance average value according to the wellbore centrifugal distance value at the target isolation location; wherein, the centrifugal distance average value refers to the average value of all wellbore centrifugal distance values;

[0065] Generate a centrifugal distance intermediate value according to the minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value; wherein the centrifugal distance intermediate value refers to the average value between the minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value;

[0066] Generate a centrifugal distance recommendation value according to the centrifugal distance average value and the centrifugal distance intermediate value.

[0067] A method for using a one-trip scraping and isolating tool, the method comprising the following steps:

[0068] Lower the one-trip scraping and isolating tool into the well;

[0069] When the one-trip scraping and isolating tool is lowered to the specified position, obtain an optical image of the wellbore at the target isolation location;

[0070] Establish a wellbore state analysis model according to the optical image of the wellbore and generate a wellbore state evaluation index;

[0071] Judge whether the wellbore at the target isolation location needs to be scraped according to the wellbore state evaluation index;

[0072] Obtain the wellbore centrifugal distance value at the target isolation location, establish a scraping radius analysis model, and generate a scraping radius setting value; wherein, the wellbore centrifugal distance value refers to the spacing value between the wellbore and the scraping assembly;

[0073] Control the working radius of the scraping assembly according to the scraping radius setting value;

[0074] When the scraping assembly has finished scraping, seal the well by applying pressure to the isolation assembly.

[0075] The present invention provides a one-trip scraping and isolating tool and a method for using the same, which have the following beneficial effects compared with the prior art:

[0076] By integrating a scraping component and a packer component, the present invention realizes a one-trip operation for scraping and packing, significantly reducing the number of trips into the well, lowering the operation cost and time, and simultaneously reducing the risk of secondary damage to the wellbore. At the same time, it can also collect optical images of the wellbore in real time through an image acquisition module, and combine with a wellbore state analysis model and a scraping requirement judgment module to dynamically evaluate the roughness of the wellbore and the distribution of sediments, automatically generate a set value for the scraping radius, and achieve precise and adaptive scraping operations, improving the consistency of the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 FIG. is a schematic three-dimensional structural cross-sectional view of a one-trip scraping and packing tool provided by an embodiment of the present invention.

[0078] Figure 2 is Figure 1 an enlarged view of part A in

[0079] Figure 3 is Figure 1 an enlarged view of part B in

[0080] Figure 4 FIG. is a schematic structural view of the scraping component provided by an embodiment of the present invention.

[0081] Figure 5 is Figure 4 an enlarged view of part C in

[0082] Figure 6 FIG. is a flow chart of a method for using a one-trip scraping and packing tool provided by an embodiment of the present invention.

[0083] NOTES ON REFERENCE NUMERALS: 1. housing; 2. limiting component; 3. packer component; 4. setting component; 5. scraping component; 6. pressure applying part; 201. limiting outer shell; 202. first shear pin; 203. second shear pin; 204. first elastic part; 205. clamping part; 301. sealing rubber cylinder; 302. upper extrusion part; 303. lower extrusion part; 401. slip; 402. upper cone; 403. lower cone; 404. casing; 405. second elastic part; 501. scraper; 502. rotating part; 503. driving part; 504. fixing part; 505. slider; 506. fixing part; 507. lead screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0084] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0085] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0086] Please refer to Figure 1 and Figure 6 , a one-trip scraping and sealing tool provided by an embodiment of the present invention, including a housing 1, on which a sealing assembly 3 is provided; the sealing tool further includes:

[0087] A scraping assembly 5, which is arranged on one side of the sealing assembly 3 and is used to clean the redundant sediments on the wellbore to keep the wellbore flat;

[0088] A cleaning control system, which is used to adjust the cleaning radius when the scraping assembly 5 cleans the wellbore;

[0089] Among them, the cleaning control system specifically includes:

[0090] An image acquisition module, which is used to acquire the optical image of the wellbore at the target sealing location;

[0091] It should be noted that the lighting conditions underground are generally poor, and sufficient lighting can be provided through artificial light sources (such as LED lights, etc.);

[0092] An image analysis unit, which is used to establish a wellbore state analysis model based on the optical image of the wellbore and generate a wellbore state evaluation index;

[0093] A scraping demand analysis module, which is used to judge whether the wellbore at the target sealing location needs to be scraped according to the wellbore state evaluation index;

[0094] A scraping radius analysis unit, which is used to obtain the centrifugal distance value of the wellbore at the target sealing location, establish a scraping radius analysis model, and generate a scraping radius setting value; among them, the wellbore centrifugal distance value refers to the spacing value between the wellbore and the scraping assembly 5;

[0095] A scraping control module, which is used to control the working radius of the scraping assembly 5 according to the scraping radius setting value.

[0096] Please refer to Figure 1 , as a preferred embodiment of the present invention, the sealing assembly 3 specifically includes:

[0097] A sealing rubber cylinder 301, which is slidably arranged on one side of the housing 1;

[0098] An upper extrusion part 302, which is arranged on one side of the sealing rubber cylinder 301, and the upper extrusion part 302 is slidably connected to the housing 1;

[0099] A lower extrusion part 303, which is arranged on one side of the sealing rubber cylinder 301;

[0100] Specifically, when the upper extrusion member 302 is under pressure, the upper extrusion member 302 will perform a linear movement along the outer wall of the housing 1, causing the upper extrusion member 302 to extrude the sealing rubber cylinder 301, and the sealing rubber cylinder 301 will transfer the received pressure to the lower extrusion member 303; when the lower extrusion member 303 cannot move anymore, the extrusion force of the upper extrusion member 302 on the sealing rubber cylinder 301 will cause the sealing rubber cylinder 301 to deform, so that the sealing rubber cylinder 301 is in contact connection with the well wall, thereby realizing the sealing effect of the sealing component 3.

[0101] In this embodiment, the lower extrusion member 303 can be set to a limited movement state, that is, it cannot continue to move after moving to a specified position, so as to prevent the sealing component 3 from failing to seal; for example, a limiting block is provided on one side of the lower extrusion member 303, and the limiting block is fixedly connected to the housing 1.

[0102] Please refer to Figure 1 , as a preferred embodiment of the present invention, the scraping component 5 specifically includes:

[0103] A rotating member 502, the rotating member 502 is rotatably arranged on one side of the housing 1;

[0104] A fixing member 504, the fixing member 504 is fixedly arranged on one side of the rotating member 502;

[0105] A scraping blade 501, the scraping blade 501 is slidably arranged on the fixing member 504;

[0106] An adjusting structure, the adjusting structure is respectively connected to the fixing member 504 and the scraping blade 501;

[0107] Specifically, by rotating the rotating member 502, the rotating member 502 drives the fixing member 504 to rotate, and the fixing member 504 drives the scraping blade 501 to rotate through the adjusting structure, so that the scraping blade 501 can scrape the well wall;

[0108] In this embodiment, the adjusting structure is used to adjust the position of the scraping blade 501 on the fixing member 504, and is also used to stabilize the connection stability between the fixing member 504 and the scraping blade 501.

[0109] Please refer to Figure 4 and Figure 5 , as a preferred embodiment of the present invention, the adjusting structure includes:

[0110] A fixing member 506, the fixing member 506 is fixedly arranged on one side of the fixing member 504;

[0111] A slider 505, the slider 505 is fixedly arranged on one side of the scraping blade 501;

[0112] A screw rod 507, wherein the screw rod 507 is disposed on one side of the scraper 501; one end of the screw rod 507 is rotatably connected to the fixing member 506, and the screw rod 507 is threadedly connected to the slider 505;

[0113] Specifically, by rotating the screw rod 507, the screw rod 507 drives the slider 505 to perform linear motion, and the slider 505 drives the scraper 501 to perform linear motion, so that the scraping radius of the scraping assembly 5 can be adjusted;

[0114] In this embodiment, the method of driving the screw rod 507 to rotate includes but is not limited to a servo motor, a hydraulic telescopic rod (through a connecting rod structure), etc.

[0115] See also Figure 1 As a preferred embodiment of the present invention, the scraping assembly 5 further includes:

[0116] A driving member 503, wherein the driving member 503 is disposed on one side of the rotating member 502 and is used to drive the rotating member 502 to rotate;

[0117] Specifically, a gear is provided at the protruding end of the driving member 503, and a corresponding tooth groove is provided on one side of the rotating member 502, so that the gear on the protruding end of the driving member 503 is meshed and connected with the rotating member 502, so that by starting the driving member 503, the driving member 503 drives the rotating member 502 to rotate through the gear on the protruding end of the driving member 503, thereby realizing the rotation of the rotating member 502.

[0118] See also Figure 1 As a preferred embodiment of the present invention, the one-trip cleaning and packing tool further comprises:

[0119] A limit assembly 2, the limit assembly 2 is used to adjust the compression state of the packing assembly 3;

[0120] Specifically, by driving the limiting component 2 to perform linear motion, the limiting component 2 will squeeze the isolation component 3, thereby changing the compression state of the isolation component 3, so that the isolation component 3 can form a contact connection with the well wall, thereby achieving the isolation effect.

[0121] See also Figure 1 As a preferred embodiment of the present invention, the limiting component 2 specifically includes:

[0122] A limiting shell 201, wherein the limiting shell 201 is slidably disposed on one side of the housing 1;

[0123] A first shear pin 202, two ends of which are respectively arranged on the limiting housing 201 and the housing 1;

[0124] Specifically, one end of the first shear pin 202 is disposed within the first shear pin 202, and the other end of the first shear pin 202 is disposed within a groove formed in the housing 1;

[0125] When the limit housing 201 is not subjected to additional pressure, the first shear pin 202 limits the position of the limit housing 201, maintaining a relatively stationary state between the limit housing 201 and the first shear pin 202, and preventing the phenomenon that the limit housing 201 squeezes the packer assembly 3 in advance due to factors such as its own gravity; when the one-trip scraping packer tool reaches the predetermined packing position, by applying pressure to the limit housing 201, the first shear pin 202 breaks, and the limit housing 201 performs a linear motion, thereby squeezing the packer assembly 3 to complete the packing of the well.

[0126] Please refer to Figure 1 and Figure 2 , as a preferred embodiment of the present invention, the limit assembly 2 further includes:

[0127] A second shear pin 203, the second shear pin 203 is slidably disposed within the limit housing 201;

[0128] A first elastic member 204, the first elastic member 204 is disposed on one side of the second shear pin 203, and one end of the first elastic member 204 is in contact connection with the second shear pin 203;

[0129] A clamping member 205, the clamping member 205 is slidably disposed on one side of the housing 1, one side of the clamping member 205 is provided with a one-way sliding tooth groove, and the other side of the clamping member 205 is provided with a limit groove;

[0130] Specifically, when the limit housing 201 is subjected to pressure, the limit housing 201 drives the second shear pin 203 and the first elastic member 204 to move. At this time, one end of the second shear pin 203 slides along one side of the housing 1 until one end of the second shear pin 203 moves to one side of the clamping member 205; when one end of the second shear pin 203 moves to one side of the clamping member 205, due to its own elasticity, one end of the first elastic member 204 pushes the second shear pin 203 to perform a linear motion, so that one end of the second shear pin 203 slides into the limit groove formed in the clamping member 205; if pressure continues to be applied to the limit housing 201, the second shear pin 203 drives the clamping member 205 to move until the packer assembly 3 completes the packing;

[0131] At the connection between the clamping member 205 and the housing 1, a limiting projection corresponding to the one-way sliding tooth groove on one side of the clamping member 205 is provided on the housing 1, so that the second shear pin 203 will not reverse linearly due to the elasticity of the packer assembly 3 itself when the pressure applied to the limiting housing 201 disappears, resulting in poor packing effect of the packer assembly 3;

[0132] It should be added that the minimum shear force of the second shear pin 203 is greater than the reverse thrust applied by the packer assembly 3 to the limiting housing 201 due to its own elasticity, reducing the risk of premature fracture of the second shear pin 203, thereby improving the stability of the packer assembly 3 during packing;

[0133] In addition, when the one-trip scraping packer tool is retrieved, by pulling the limiting housing 201, the second shear pin 203 is fractured, so that the extrusion force of the limiting housing 201 on the packer assembly 3 disappears. When the extrusion force of the limiting housing 201 on the packer assembly 3 disappears, the packer assembly 3 will reset due to its own elasticity, thus breaking the contact connection between the packer assembly 3 and the wellbore wall and releasing the packing of the packer assembly 3, facilitating the retrieval of the one-trip scraping packer tool.

[0134] Please refer to Figure 1 As a preferred embodiment of the present invention, the one-trip scraping packer tool further includes:

[0135] A setting assembly 4, which is arranged on one side of the packer assembly 3 and is used to fix the housing 1 before the packer assembly 3 performs packing;

[0136] Specifically, before the packer assembly 3 performs packing, making the setting assembly 4 contact and connect with the wellbore wall can further maintain the relative static state between the housing 1 and the wellbore wall, thereby improving the stability of the packer assembly 3 during packing.

[0137] Please refer to Figure 1 and Figure 3 As a preferred embodiment of the present invention, the setting assembly 4 specifically includes:

[0138] A slip 401, which is arranged on one side of the housing 1;

[0139] An upper cone 402, which is arranged on one side of the packer assembly 3; the upper cone 402 is slidably connected to the housing 1, and one surface of the upper cone 402 is an inclined surface, and the inclined surface of the upper cone 402 is in contact connection with the slip 401;

[0140] Lower cone 403, the lower cone 403 is fixedly arranged on the housing 1, and one side of the lower cone 403 is an inclined surface, and the inclined surface of the lower cone 403 is in contact connection with the slip 401;

[0141] Specifically, when the packer assembly 3 is squeezed, the packer assembly 3 will perform a linear motion, thereby driving the upper cone 402 to perform a linear motion. The upper cone 402 drives both ends of the upper cone 402 to slide along the inclined surface of the upper cone 402 and the inclined surface of the lower cone 403 respectively until the slip 401 is in contact connection with the wellbore wall. Through the frictional force generated when the slip 401 is in contact connection with the wellbore wall, the slip 401 is fixed to the housing 1 before the packer assembly 3 performs sealing.

[0142] Please refer to Figure 1 , as a preferred embodiment of the present invention, the one-trip cleaning and packing tool further includes:

[0143] Pressing member 6, the pressing member 6 is arranged on one side of the packer assembly 3, and the pressing member 6 is slidably connected to the housing 1;

[0144] Specifically, by pushing the pressing member 6, the pressing member 6 slides along the outer wall of the housing 1, thereby applying pressure to the packer assembly 3 to prompt the packer assembly 3 to complete sealing.

[0145] Please refer to Figure 1 and Figure 3 , as a preferred embodiment of the present invention, the setting packer assembly 4 further includes:

[0146] Casing 404, the casing 404 is fixedly arranged on the housing 1, and the casing 404 is slidably connected to the slip 401;

[0147] Second elastic member 405, the second elastic member 405 is arranged on one side of the housing 1, and both ends of the second elastic member 405 are fixedly connected to the slip 401 and the housing 1 respectively;

[0148] Specifically, when the upper cone 402 drives the slip 401 to perform a linear motion, the slip 401 will slide along the inner wall of the second elastic member 405; at this time, the slip 401 will pull the second elastic member 405 to cause the second elastic member 405 to deform; when the upper cone 402 is reset, the second elastic member 405 will pull the slip 401 to slide along the inner wall of the second elastic member 405 due to its own elasticity, so that the slip 401 is reset, which is convenient for the one-trip cleaning and packing tool to be recovered.

[0149] As a preferred embodiment of the present invention, the image data analysis unit specifically includes:

[0150] An image segmentation module for evenly dividing the optical image of the wellbore at the target isolation location into several regional images and marking them as regional images;

[0151] A brightness contrast module for determining whether a regional image belongs to a rough area based on the brightness of the regional image;

[0152] A deviation analysis module for obtaining the brightness deviation value of the rough area and generating a brightness deviation index; wherein, the brightness deviation value of the rough area refers to the difference between the brightness of the rough area and the brightness of the adjacent regional image;

[0153] A distribution evaluation module for obtaining the number of rough areas and generating a rough area distribution evaluation index;

[0154] A state analysis module for establishing a wellbore state analysis model based on the brightness deviation index and the rough area distribution evaluation index and generating a wellbore state evaluation index.

[0155] As a preferred embodiment of the present invention, the method for determining whether a regional image belongs to a rough area is specifically as follows:

[0156] Obtain the brightness of the regional image and generate a regional image brightness deviation; wherein, the regional image brightness deviation refers to the difference between the brightness of a single regional image and the brightness of the adjacent regional image;

[0157] Compare the regional image brightness deviation with a deviation threshold;

[0158] If the regional image brightness deviation is less than or equal to the deviation threshold, mark the regional image as a smooth area;

[0159] If the regional image brightness deviation is greater than the deviation threshold, mark the regional image as a rough area.

[0160] As a preferred embodiment of the present invention, the method for generating the brightness deviation index is specifically as follows:

[0161] Obtain the brightness deviation value of the rough area and generate a brightness average difference value; wherein, the brightness average difference value refers to the average value of the brightness deviation values of all rough areas;

[0162] Generate a brightness average difference deviation value based on the brightness average difference value and the brightness deviation threshold; wherein, the brightness average difference deviation value refers to the difference between the brightness average difference value and the brightness deviation threshold;

[0163] Generate a brightness deviation index based on the brightness average difference deviation value; wherein, the brightness deviation index refers to the ratio of the brightness average difference deviation value to the brightness deviation threshold.

[0164] As a preferred embodiment of the present invention, the method for generating the rough area distribution evaluation index is specifically as follows:

[0165] Obtain the number of rough regions and generate the proportion of the quantity distribution; where the proportion of the quantity distribution refers to the ratio between the number of rough regions and the total number of regional images.

[0166] Generate the difference value of the proportion of the quantity distribution according to the proportion of the quantity distribution; where the difference value of the proportion of the quantity distribution refers to the difference between the proportion of the quantity distribution and the warning value of the proportion of the quantity distribution.

[0167] It should be noted that the warning value of the proportion of the quantity distribution refers to the maximum proportion of rough regions in the optical image of the wellbore under standard conditions.

[0168] Generate the evaluation index of the rough region distribution according to the difference value of the proportion of the quantity distribution; where the evaluation index of the rough region distribution refers to the ratio between the difference value of the proportion of the quantity distribution and the warning value of the proportion of the quantity distribution.

[0169] As a preferred embodiment of the present invention, the expression of the wellbore state analysis model is specifically:

[0170] ;

[0171] In the expression, represents the wellbore state evaluation index, represents the evaluation index of the rough region distribution, represents the brightness deviation index.

[0172] As a preferred embodiment of the present invention, the method for determining whether the wellbore at the target packer needs to be scraped is specifically:

[0173] Compare the wellbore state evaluation index with the wellbore state evaluation index threshold to evaluate the scraping requirement of the wellbore.

[0174] It should be noted that the wellbore state evaluation index threshold is a set value, which is set by relevant personnel in the field.

[0175] When the wellbore state evaluation index is less than or equal to the wellbore state evaluation index threshold, it is determined that the wellbore does not need to be scraped; when the wellbore does not need to be scraped, the smaller the wellbore state evaluation index, the smaller the scraping requirement of the wellbore.

[0176] When the wellbore state evaluation index is greater than the wellbore state evaluation index threshold, it is determined that the wellbore needs to be scraped; when the wellbore needs to be scraped, the larger the wellbore state evaluation index, the greater the scraping requirement of the wellbore.

[0177] As a preferred embodiment of the present invention, the scraping radius analysis unit specifically includes:

[0178] The centrifugal distance data acquisition module is used to acquire the wellbore centrifugal distance value at the target packer location;

[0179] The centrifugal distance analysis module is used to generate a centrifugal distance recommended value based on the wellbore centrifugal distance value at the target packer location;

[0180] The scraping radius analysis module is used to establish a scraping radius analysis model and generate a scraping radius setting value based on the centrifugal distance recommended value.

[0181] As a preferred embodiment of the present invention, the generation method of the centrifugal distance recommended value is specifically as follows:

[0182] Generate a centrifugal distance average value based on the wellbore centrifugal distance value at the target packer location; wherein, the centrifugal distance average value refers to the average value of all wellbore centrifugal distance values;

[0183] Generate a centrifugal distance intermediate value based on the minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value; wherein the centrifugal distance intermediate value refers to the average value between the minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value;

[0184] The minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value are respectively the minimum value and the maximum value among all wellbore centrifugal distance values;

[0185] Generate a centrifugal distance recommended value based on the centrifugal distance average value and the centrifugal distance intermediate value;

[0186] Exemplarily, through the formula:

[0187] ;

[0188] Generate the centrifugal distance recommended value ;

[0189] In the formula, represents the centrifugal distance average value, represents the centrifugal distance intermediate value, α and β are both weight coefficients, and α + β = 1;

[0190] It should be noted that the values of α and β are set by relevant personnel in the field themselves, and the value setting methods include but are not limited to the analytic hierarchy process, etc.

[0191] As a preferred embodiment of the present invention, the expression of the scraping radius analysis model is specifically:

[0192] ;

[0193] In the expression, represents the scraping radius setting value, represents the minimum wellbore centrifugal distance value, It represents the recommended value of the centrifugal distance.

[0194] The present invention also provides a method for using a one-trip scraping and sealing tool, which is applied to the above-mentioned one-trip scraping and sealing tool. The method includes the following steps:

[0195] Step S10: Lower the one-trip scraping and sealing tool into the well.

[0196] Step S20: When the one-trip scraping and sealing tool is lowered to the specified position, obtain the optical image of the wellbore at the target sealing location.

[0197] Step S30: According to the optical image of the wellbore, establish an analysis model for the wellbore state and generate an evaluation index for the wellbore state.

[0198] Step S40: According to the evaluation index of the wellbore state, determine whether the wellbore at the target sealing location needs to be scraped.

[0199] Step S50: Obtain the centrifugal distance value of the wellbore at the target sealing location, establish an analysis model for the scraping radius, and generate a set value for the scraping radius; wherein, the centrifugal distance value of the wellbore refers to the spacing value between the wellbore and the scraping assembly 5.

[0200] Step S60: Control the working radius of the scraping assembly 5 according to the set value of the scraping radius.

[0201] Step S70: After the scraping assembly 5 finishes scraping, seal the well by applying pressure to the sealing assembly 3.

[0202] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-trip scraping packer tool, comprising a housing (1), and a packing assembly (3) is provided on the housing (1); characterized in that, The packer tool further includes: A scraping assembly (5), which is arranged on one side of the packer assembly (3) and is used to clean the excess sediment on the wellbore wall to keep the wellbore wall flat; A cleaning control system, which is used to adjust the cleaning radius when the scraping assembly (5) cleans the wellbore wall; Wherein, the cleaning control system specifically includes: An image acquisition module, which is used to acquire the optical image of the wellbore wall at the target packing location; An image analysis unit, which is used to establish a wellbore state analysis model based on the optical image of the wellbore wall and generate a wellbore state evaluation index; A scraping requirement analysis module, which is used to judge whether the wellbore wall at the target packing location needs to be scraped according to the wellbore state evaluation index; A scraping radius analysis unit, which is used to obtain the centrifugal distance value of the wellbore wall at the target packing location, establish a scraping radius analysis model, and generate a scraping radius setting value; wherein, the centrifugal distance value of the wellbore wall refers to the spacing value between the wellbore wall and the scraping assembly (5); A scraping control module, which is used to control the working radius of the scraping assembly (5) according to the scraping radius setting value.

2. The one-trip scraping packer tool according to claim 1, characterized in that, The packer assembly (3) specifically includes: A sealing rubber cylinder (301), which is slidably arranged on one side of the housing (1); An upper extrusion member (302), which is arranged on one side of the sealing rubber cylinder (301), and the upper extrusion member (302) is slidably connected to the housing (1); A lower extrusion member (303), which is arranged on one side of the sealing rubber cylinder (301).

3. The one-trip scraping packer tool according to claim 1, characterized in that, The scraping assembly (5) specifically includes: A rotating member (502), which is rotatably arranged on one side of the housing (1); A fixing member (504), which is fixedly arranged on one side of the rotating member (502); A scraping blade (501), which is slidably arranged on the fixing member (504); An adjusting structure, which is respectively connected to the fixing member (504) and the scraping blade (501).

4. The one-trip scraping packer tool according to claim 3, characterized in that, The adjusting structure includes: A fixing member (506), which is fixedly arranged on one side of the fixing member (504); A slider (505), which is fixedly arranged on one side of the scraping blade (501); A lead screw (507), which is arranged on one side of the scraping blade (501); one end of the lead screw (507) is rotatably connected to the fixing member (506), and the lead screw (507) is threadedly connected to the slider (505).

5. A one-trip scraping packer tool according to claim 1, characterized in that, The one-trip scraping packer tool further includes: A limiting assembly (2), which is used to adjust the compression state of the packer assembly (3); The limiting assembly (2) specifically includes: A limiting housing (201), which is slidably arranged on one side of the housing (1); A first shear pin (202), with both ends of the first shear pin (202) arranged on the limiting housing (201) and the housing (1) respectively; A second shear pin (203) which is slidably arranged within the limit housing (201); A first elastic member (204) which is arranged on one side of the second shear pin (203), and one end of the first elastic member (204) is in abutting connection with the second shear pin (203); A clamping member (205) which is slidably arranged on one side of the housing (1), a one-way sliding tooth groove is arranged on one side of the clamping member (205), and a limit groove is formed on the other side of the clamping member (205).

6. The one-trip scraping packer tool according to claim 1, characterized in that, The one-trip scraping packer tool further comprises: A setting assembly (4) which is arranged on one side of the packer assembly (3) and is used for fixing the housing (1) before the packer assembly (3) performs packing; Specifically, the setting assembly (4) comprises: A slip (401) which is arranged on one side of the housing (1); An upper cone (402) which is arranged on one side of the packer assembly (3); the upper cone (402) is slidably connected with the housing (1), one surface of the upper cone (402) is an inclined surface, and the inclined surface of the upper cone (402) is in abutting connection with the slip (401); A lower cone (403) which is fixedly arranged on the housing (1), and one surface of the lower cone (403) is an inclined surface, and the inclined surface of the lower cone (403) is in abutting connection with the slip (401); A sleeve (404) which is fixedly arranged on the housing (1), and the sleeve (404) is slidably connected with the slip (401); A second elastic member (405) which is arranged on one side of the housing (1), and both ends of the second elastic member (405) are fixedly connected with the slip (401) and the housing (1) respectively.

7. A one-trip scraping and packing tool according to claim 1, characterized in that Specifically, the image data analysis unit comprises: An image segmentation module which is used for equally dividing the optical image of the wellbore at the target packing location into a plurality of regional images and marking them as regional images; A brightness comparison module which is used for judging whether the regional image belongs to a rough region according to the brightness of the regional image; A deviation analysis module which is used for obtaining the brightness deviation value of the rough region and generating a brightness deviation index; wherein, the brightness deviation value of the rough region refers to the difference between the brightness of the rough region and the brightness of the adjacent regional image; A distribution evaluation module which is used for obtaining the number of the rough regions and generating a rough region distribution evaluation index; A state analysis module which is used for establishing a wellbore state analysis model according to the brightness deviation index and the rough region distribution evaluation index and generating a wellbore state evaluation index.

8. A one-trip scraping and sealing tool according to claim 7, characterized in that, Specifically, the generation method of the brightness deviation index is as follows: Obtaining the brightness deviation value of the rough region and generating a brightness average difference value; wherein, the brightness average difference value refers to the average value of the brightness deviation values of all the rough regions; Generating a brightness average difference deviation value according to the brightness average difference value and a brightness deviation threshold; wherein, the brightness average difference deviation value refers to the difference between the brightness average difference value and the brightness deviation threshold; Generate a brightness deviation index according to the deviation value of the average brightness difference; wherein, the brightness deviation index refers to the ratio between the deviation value of the average brightness difference and the brightness deviation threshold value; The specific generation method of the rough area distribution evaluation index is as follows: Obtain the number of rough areas and generate the proportion of the number distribution; wherein, the proportion of the number distribution refers to the ratio between the number of rough areas and the total number of regional images; Generate a difference value of the proportion of the number distribution according to the proportion of the number distribution; wherein, the difference value of the proportion of the number distribution refers to the difference between the proportion of the number distribution and the warning value of the proportion of the number distribution; Generate a rough area distribution evaluation index according to the difference value of the proportion of the number distribution; wherein, the rough area distribution evaluation index refers to the ratio between the difference value of the proportion of the number distribution and the warning value of the proportion of the number distribution.

9. The one-trip scraping packer tool according to claim 1, wherein, The scraping radius analysis unit specifically includes: A centrifugal distance data acquisition module for acquiring the wellbore centrifugal distance value of the target packer; A centrifugal distance analysis module for generating a centrifugal distance recommended value according to the wellbore centrifugal distance value of the target packer; A scraping radius analysis module for establishing a scraping radius analysis model and generating a scraping radius setting value according to the centrifugal distance recommended value; The specific generation method of the centrifugal distance recommended value is as follows: Generate an average centrifugal distance according to the wellbore centrifugal distance value of the target packer; wherein, the average centrifugal distance refers to the average value of all wellbore centrifugal distance values; Generate a centrifugal distance intermediate value according to the minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value; wherein the centrifugal distance intermediate value refers to the average value between the minimum wellbore centrifugal distance value and the maximum wellbore centrifugal distance value; Generate a centrifugal distance recommended value according to the average centrifugal distance and the centrifugal distance intermediate value.

10. A method for using a one-trip scraping packer tool, characterized in that This method is applied to a one-trip scraping packer tool according to any one of claims 1-9; this method includes the following steps: Lower the one-trip scraping packer tool into the well; When the one-trip scraping packer tool is lowered to the specified position, obtain the optical image of the wellbore at the target packer; Establish a wellbore state analysis model according to the optical image of the wellbore and generate a wellbore state evaluation index; Judge whether the wellbore at the target packer needs to be scraped according to the wellbore state evaluation index; Obtain the wellbore centrifugal distance value of the target packer, establish a scraping radius analysis model, and generate a scraping radius setting value; wherein, the wellbore centrifugal distance value refers to the spacing value between the wellbore and the scraping assembly (5); Control the working radius of the scraping assembly (5) according to the scraping radius setting value; After the scraping assembly (5) finishes scraping, seal the well by applying pressure to the packer assembly (3).

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