An intelligent completion system for oil and gas well production

Abstract

The application relates to an intelligent well completion system for oil and gas well production, which comprises an oil well body and an oil well data processing unit carried in a general control box and matched with the oil well body, a self-verification packer comprising a plurality of packing sleeves, verification nests matched with the oil well body arranged at the outer ends of the packing sleeves, an oil well packing verification unit matched with the verification nests, and a verification feedback unit connected with the oil well packing verification unit. The verification nests, the oil well packing verification unit and the verification feedback unit are adopted, the self-verification function of system instruction execution is effectively realized, the effectiveness and precision of adjustment are guaranteed, data feedback of the adjustment instruction is realized, the further adjustment is promoted, the precision of the self-verification packer acting on the oil well body is fully guaranteed, the adverse effects of seat sealing or unsealing in the oil pumping process are avoided, the production efficiency of the oil well is guaranteed, the damage of each structure of the oil extraction is reduced, and the safety of the oil well production process is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a well completion system, in particular to an intelligent well completion system for oil and gas production applied to the field of drilling in soil or rock. BACKGROUND

[0002] The intelligent well completion system is an advanced technology for oil well completion operation. The main components include flow control devices, packers, downhole permanent sensors, control and transmission lines, surface data acquisition and control devices, which can realize real-time monitoring and remote control of oil well production process.

[0003] In order to improve the efficiency of oil and gas production, the existing oil and gas production process mostly adopts the way of separate layering, so the intelligent well completion system is needed to intelligently control the packer of separate layering, and to realize the oil and gas collection of several layers in the well by regulating and controlling the setting and unsetting of the packer.

[0004] However, the intelligent well completion system in the prior art lacks self-verification of the regulation result in the process of separate layering oil regulation, and cannot effectively judge the state of multiple packers in the well, which not only directly affects the production efficiency of the oil well, but also causes damage to the oil production structure and reduces safety. SUMMARY

[0005] In view of the above prior art, the technical problem to be solved by the present application is how to improve the self-verification of the intelligent well completion system.

[0006] In order to solve the above problems, the present application provides an intelligent well completion system for oil and gas production, which comprises an oil well body and an oil well data processing unit carried in a general control box and matched with the oil well body, and the oil well data processing unit is connected with an oil well environment acquisition unit and an oil pumping regulation unit.

[0007] A pump oil pipe is installed in the oil well body, and an electric control assembly and a self-verification packer matched with the electric control assembly are connected to the lower end of the pump oil pipe, and the self-verification packer comprises a plurality of packing sleeves, and the outer end of the packing sleeve is provided with a verification nest matched with the oil well body.

[0008] The oil well data processing unit is further connected with an oil well packer verification unit matched with the verification nest, and the oil well packer verification unit is connected with a verification feedback unit.

[0009] The oil pumping regulation unit is matched with the electric control assembly, the self-verification packer and the verification feedback unit, and the oil well environment acquisition unit is connected with an environment acquisition device signal arranged in the oil well body.

[0010] In the above intelligent well completion system for oil and gas production, the self-verification of the system instruction is used to ensure the effectiveness and accuracy of the system oil pumping regulation, and the safety of the oil well production process is improved.

[0011] As a supplement to the present application, the oil well body is divided from top to bottom into a pump oil layer, a first production layer, a first control layer, a second production layer, a second control layer and a third production layer;

[0012] The electric control assembly comprises an upper electromagnetic control valve arranged in the first production layer, a middle electromagnetic control valve arranged in the second production layer and a lower electromagnetic control valve arranged in the third production layer.

[0013] As a supplement to the present application, the lower end of the pump oil pipe is connected with the upper electromagnetic control valve, and self-verification packers are connected between the upper electromagnetic control valve and the middle electromagnetic control valve and between the middle electromagnetic control valve and the lower electromagnetic control valve, and the self-verification packer between the upper electromagnetic control valve and the middle electromagnetic control valve is located in the first control layer, and the self-verification packer between the middle electromagnetic control valve and the lower electromagnetic control valve is located in the second control layer.

[0014] As a supplement to the present application, signal cables are arranged on the upper electromagnetic control valve, the middle electromagnetic control valve and the lower electromagnetic control valve, and the oil well environment acquisition unit, the oil pumping regulation unit, the oil well packer verification unit and the verification feedback unit are signal connected with corresponding devices through the signal cables.

[0015] As a further improvement of the present application, a verification auxiliary slot is arranged at the outer end of the packer sleeve, a verification nest is fixedly connected to the outer end of the verification auxiliary slot, and the outer end diameter of the verification nest is equal to the outer end diameter of the packer sleeve.

[0016] As a supplement to the further improvement of the present application, an induction cavity is arranged in the verification nest, an auxiliary inner ring is fixedly connected to the middle of the inner wall of the side close to the packer sleeve in the induction cavity, a uniform outer ring matched with the auxiliary inner ring is fixedly connected to the inner wall of the side away from the packer sleeve in the induction cavity, and a plurality of pressure verification assemblies are connected between the uniform outer ring and the auxiliary inner ring.

[0017] Angle receiving strips are arranged at the upper and lower ends of the pressure verification assembly, flexible receiving strips are connected to the ends of the angle receiving strips away from the pressure verification assembly, and the ends of the flexible receiving strips away from the angle receiving strips are connected to the inner wall of the side close to the packer sleeve in the induction cavity.

[0018] As a supplement to the further improvement of the present application, the pressure verification assembly comprises a double-ball connecting rod installed between the uniform outer ring and the auxiliary inner ring, a pressure transmission sleeve is sleeved on the outer end of the double-ball connecting rod, and elastic pressure induction sleeves matched with the double-ball connecting rod are fixedly connected to the two ends of the pressure transmission sleeve close to the uniform outer ring and the auxiliary inner ring respectively.

[0019] A pressure sensor is arranged in the elastic pressure induction sleeve, and the oil well packer verification unit is signal connected with the pressure sensor.

[0020] As a further improvement of the present application, the outer end of the pressure transmission sleeve is fixedly connected with a pair of mirror image arranged rotating rods, and the angle receiving strip is rotationally connected with the pressure transmission sleeve through the rotating rods away from the flexible receiving strip.

[0021] As a further improvement of the present application, the induction cavity is embedded with auxiliary electromagnetic sheets on the two inner walls close to and away from the packer sleeve, and the auxiliary electromagnetic sheets are located on the upper and lower sides of the corresponding outer ring and auxiliary inner ring, and the oil well data processing unit is further connected with a forced regulation unit, and the forced regulation unit is signal connected with the auxiliary electromagnetic sheets.

[0022] As a further improvement of the present application, the double ball connecting rod, the elastic pressure sensing sleeve and the pressure transmission sleeve are all made of elastic material, and the stiffness coefficient of the double ball connecting rod is greater than the stiffness coefficient of the elastic pressure sensing sleeve, and the stiffness coefficient of the double ball connecting rod is less than the stiffness coefficient of the pressure transmission sleeve.

[0023] In summary, by setting the verification nest on the self-verification packer, and cooperating with the oil well packer verification unit and the verification feedback unit, the system can effectively realize intelligent regulation of the downhole valve and the self-verification packer, realize the function of layered oil production, and effectively monitor and feedback the adjustment execution state of the self-verification packer, effectively realize the self-verification function of the system instruction execution, ensure the effectiveness and precision of the adjustment, and also feedback the adjustment instruction through the feedback data, promote the further effect of the adjustment, fully ensure the precision of the self-verification packer on the oil well body, avoid the adverse effects of seat sealing or unsealing during pumping, ensure the production efficiency of the oil well, reduce the damage of the oil production structure, and improve the safety of the oil well production process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The topological graph of the first embodiment of the present application;

[0025] Figure 2 The internal front view of the oil well body of the first embodiment of the present application;

[0026] Figure 3 The regulation logic diagram of the first embodiment of the present application;

[0027] Figure 4 The cooperation of the electric control assembly and the self-verification packer of the first embodiment of the present application;

[0028] Figure 5 The self-verification packer of the second embodiment of the present application;

[0029] Figure 6 The front view of the self-verification packer regulation process change state of the second embodiment of the present application;

[0030] Figure 7 The front view of the pressure verification assembly and the angle adapter strip of the second embodiment of the present application in the process of acting on the packer;

[0031] Figure 8 The partial enlarged view of the pressure verification assembly and the angle adapter strip of the second embodiment of the present application in the process of cooperating with the change state;

[0032] Figure 9 The front view of the packer in the process of forced setting of the third embodiment of the present application;

[0033] Figure 10 The front view of the packer in the process of forced unsetting of the third embodiment of the present application;

[0034] Figure 11 The partial enlarged view of the verification of the change state of the nest in the process of forced adjustment of the third embodiment of the present application.

[0035] Explanation of the reference numerals in the drawings:

[0036] 1 oil well body, 11 pump pipe, 2 upper electromagnetic control valve, 21 middle electromagnetic control valve, 22 lower electromagnetic control valve, 3 self-verification packer, 31 packer sleeve, 32 verification auxiliary nest, 4 verification nest, 41 uniform outer ring, 42 auxiliary inner ring, 5 signal cable, 6 pressure verification assembly, 61 double-ball connecting rod, 62 elastic pressure sensing sleeve, 63 pressure transmission sleeve, 7 angle adapter strip, 71 flexible adapter strip. DETAILED DESCRIPTION

[0037] The three embodiments of the present application will be described in detail below with reference to the drawings.

[0038] First embodiment:

[0039] Figures 1-4 An oil well data processing unit is shown, which is mounted in a general control box and cooperates with the oil well body 1, and the oil well data processing unit is connected with an oil well environment acquisition unit and an oil pumping control unit;

[0040] The pump pipe 11 is installed in the oil well body 1, and the lower end of the pump pipe 11 is connected with an electric control assembly and a self-verification packer 3 cooperating with the electric control assembly, and the self-verification packer 3 includes a plurality of packer sleeves 31, and the outer end of the packer sleeve 31 is provided with a verification nest 4 cooperating with the oil well body 1;

[0041] The oil well data processing unit is also connected with an oil well packer verification unit cooperating with the verification nest 4, and the oil well packer verification unit is connected with a verification feedback unit;

[0042] The oil pumping control unit is matched with the electric control assembly, the self-verification packer 3 and the verification feedback unit respectively, the oil well environment acquisition unit is connected with the environment collector arranged in the oil well body 1, the verification nest 4 is arranged on the self-verification packer 3, and the oil well packer verification unit and the verification feedback unit are matched, so that the system can intelligently control the valves and the self-verification packer 3 in each layer of the well, realize the layered oil extraction, monitor and feed back the adjustment execution state of the self-verification packer 3, realize the self-verification of the system instruction execution, ensure the effectiveness and precision of the adjustment, feed back the adjustment instruction through the feedback data, ensure the precision of the self-verification packer 3 on the oil well body 1, avoid the bad effects of seat sealing or unsealing in the pumping process, ensure the production efficiency of the oil well, reduce the damage of the oil extraction structure, and improve the safety of the oil well production process.

[0043] Figures 1-2 The oil well body 1 is divided into a pumping layer, a first production layer H1, a first control layer K1, a second production layer H2, a second control layer K2 and a third production layer H3 from top to bottom;

[0044] The electric control assembly comprises an upper electromagnetic control valve 2 arranged in the first production layer H1, a middle electromagnetic control valve 21 arranged in the second production layer H2 and a lower electromagnetic control valve 22 arranged in the third production layer H3, through the layered action on the oil well body 1, the layered oil extraction control is realized, the oil well production efficiency is improved, the unified control and monitoring of each layer of the oil extraction structure are realized through the cooperation of the electric control assembly and the oil pumping control unit, and the safety and coordination of the system are effectively ensured.

[0045] Figures 1-4 The lower end of the pumping pipe 11 is connected with the upper electromagnetic control valve 2, the self-verification packer 3 is arranged between the upper electromagnetic control valve 2 and the middle electromagnetic control valve 21 and between the middle electromagnetic control valve 21 and the lower electromagnetic control valve 22, the self-verification packer 3 between the upper electromagnetic control valve 2 and the middle electromagnetic control valve 21 is arranged in the first control layer K1, the self-verification packer 3 between the middle electromagnetic control valve 21 and the lower electromagnetic control valve 22 is arranged in the second control layer K2, the self-verification packer 3 can separate each layer, avoid the mutual influence of each layer in the pumping process, realize the purpose of layered oil extraction control, and improve the automation and intelligentization of the oil well production.

[0046] Figures 1-3The upper electromagnetic control valve 2, the middle electromagnetic control valve 21 and the lower electromagnetic control valve 22 are all provided with signal cables 5, and the oil well environment acquisition unit, the oil pumping control unit, the oil well sealing verification unit and the verification feedback unit are all connected with the corresponding devices through the signal cables 5. The signal cables 5 realize the unified control and signal transmission of the structures in the oil well body 1, effectively realize the rapid transmission of data, and fully guarantee the coordination of the structures.

[0047] Figures 1-4 The oil well environment acquisition unit monitors the temperature, pressure and other data in the oil well body 1 in real time through the environment acquisition device in the oil well body 1, processes the collected environment data and transmits them to the oil well data processing unit. The oil well data processing unit is also connected with the oil well data transmission unit, and the oil well data transmission unit is connected with the monitoring workbench. The technician receives the data of the oil well body 1 through the monitoring workbench, controls the structures of the oil well body 1 through the monitoring workbench, and controls the oil pumping process;

[0048] When the oil well data processing controls the layered oil pumping according to the oil pumping control data transmitted by the oil well data transmission unit, the oil pumping valve arranged on the oil pumping pipe 11 is controlled, and then the upper electromagnetic control valve 2, the middle electromagnetic control valve 21 and the lower electromagnetic control valve 22 arranged in the first production layer H1, the second production layer H2 and the third production layer H3 are controlled to be opened and closed correspondingly. The self-verification packer 3 in the first control layer K1 and the second control layer K2 is controlled to be seated and unseated correspondingly to isolate the production layers;

[0049] When the self-verification packer 3 generates the adjusting action, the sealing sleeve 31 on the self-verification packer 3 generates the corresponding deformation, that is, generates the expansion action when being seated to realize the abutment with the inner wall of the oil well body 1 and the plugging action, and generates the shape recovery action when being unseated to not contact the inside of the oil well body 1. The self-verification packer 3 can be adjusted according to the actual model and driving mode of the self-verification packer 3 during the seating and unseating of the sealing sleeve 31, which is not described here. The person skilled in the art can select the self-verification packer 3 according to the actual needs. During the deformation of the sealing sleeve 31, the verification nest 4 generates the corresponding deformation action, and then generates a certain data. The oil well sealing verification unit receives the data, processes the data and transmits the data before and after the execution of the adjusting instruction to the verification feedback unit. The verification feedback unit judges the completion degree of the execution of the adjusting instruction of the self-verification packer 3 according to the change state of the data before and after the adjusting instruction, whether the adjusting purpose is achieved, effectively realizes the self-verification purpose of the adjusting instruction, guarantees the precision and effectiveness of the execution of the adjusting instruction, and guarantees the effectiveness of the adjustment.

[0050] If the adjustment purpose is achieved, the verification feedback unit transmits data to the oil well data processing unit and the oil pumping control unit. The oil well data processing unit stores the data, and the oil pumping control unit controls the electric control assembly to produce a continuous adjustment effect to adjust the pumping volume.

[0051] If the adjustment purpose is not achieved, the verification feedback unit transmits data to the oil well data processing unit and the oil pumping control unit. The oil well data processing unit stores the data and processes the adjustment data. The oil pumping control unit controls the self-verification packer 3 to produce an adjustment effect again or enhance the adjustment effect of the self-verification packer 3 to achieve the adjustment purpose. Then, the oil well data processing unit transmits the compensated data to the verification feedback unit. The verification feedback unit judges whether the adjustment purpose is achieved. If the adjustment purpose is achieved, the oil pumping control unit controls the electric control assembly to produce a continuous adjustment effect to adjust the pumping volume, ensuring the production efficiency and safety of the oil well.

[0052] After the oil well data processing unit stores and verifies the data, the data is transmitted to the monitoring workbench through the oil well data transmission unit, so that the technician can judge the pumping state of the oil well body 1 and the use state of each structure to ensure the timeliness of subsequent maintenance. When the self-verification packer 3 still does not achieve the adjustment purpose after the compensation of the verification data, the oil well data processing unit also sends alarm data to the monitoring workbench through the oil well data transmission unit to remind the technician, thereby ensuring the safety of oil well production.

[0053] Second embodiment:

[0054] Figure 1 、 3 And 5-8 show that the verification auxiliary slot 32 is provided at the outer end of the packer sleeve 31. The verification nest 4 is fixedly connected to the outer end of the verification auxiliary slot 32, and the outer end diameter of the verification nest 4 is equal to the outer end diameter of the packer sleeve 31. The verification nest 4 is embedded in the packer sleeve 31. While ensuring the cooperative action of the verification nest 4 and the self-verification packer 3, the influence of the verification nest 4 on the normal deformation of the packer sleeve 31 is effectively avoided, thereby ensuring the accuracy of the self-verification data and the reference effect, reducing the data conversion steps, and reducing the system operation difficulty.

[0055] Figures 5-8 The verification nest 4 is provided with an induction cavity. The auxiliary inner ring 42 is fixedly connected to the middle of the inner wall of the side close to the packer sleeve 31. The uniform outer ring 41 matched with the auxiliary inner ring 42 is fixedly connected to the inner wall of the side away from the packer sleeve 31. A plurality of pressure verification assemblies 6 are connected between the uniform outer ring 41 and the auxiliary inner ring 42.

[0056] The pressure verification assembly 6 is provided with an angle receiving strip 7 at both upper and lower ends, and the angle receiving strip 7 is connected with a flexible receiving strip 71 at one end away from the pressure verification assembly 6, and the flexible receiving strip 71 is connected with the inner wall of the induction cavity close to the side of the packer 31 at one end away from the angle receiving strip 7. The pressure verification assembly 6 generates synchronous displacement with the deformation of the packer 31 through the effects of the uniform outer ring 41 and the auxiliary inner ring 42, and then can form displacement difference with the angle receiving strip 7 under the limitation of the flexible receiving strip 71, so as to facilitate the judgment of the state of the adjustment instruction execution of the self-verification packer 3.

[0057] Figure 1 、 3 And 7-8 show that the pressure verification assembly 6 includes a double-ball connecting rod 61 installed between the uniform outer ring 41 and the auxiliary inner ring 42, and the outer end of the double-ball connecting rod 61 is sleeved with a pressure transmission sleeve 63, and the pressure transmission sleeve 63 is fixedly connected with an elastic pressure sensing sleeve 62 matched with the double-ball connecting rod 61 at both ends close to the uniform outer ring 41 and the auxiliary inner ring 42 respectively.

[0058] The elastic pressure sensing sleeve 62 is provided with a pressure sensor, and the oil well packer verification unit is signal connected with the pressure sensor. Through the cooperation of the double-ball connecting rod 61, the elastic pressure sensing sleeve 62 and the pressure transmission sleeve 63, the dataization of the deformation state of the packer 31 can be effectively realized, and then the execution state of the adjustment instruction of the self-verification packer 3 can be effectively judged, so as to realize the self-verification function of the system, fully and effectively guarantee the effectiveness and effectiveness of the system adjustment, so as to guarantee the production efficiency and production safety of the oil well. Also through the effect of the self-verification packer 3, the intelligent effect of the system is further improved.

[0059] Figures 7-8 The outer end of the pressure transmission sleeve 63 is fixedly connected with a pair of mirror image arranged rotating rods, and the angle receiving strip 7 is rotatably connected with the pressure transmission sleeve 63 through the rotating rods at one end away from the flexible receiving strip 71. The cooperation of the angle receiving strip 7 and the flexible receiving strip 71 realizes the limitation and driving of the position of the pressure transmission sleeve 63 on the double-ball connecting rod 61, so as to realize the different deformation effects of the elastic pressure sensing sleeve 62, and realize the dataization display of the deformation state of the packer 31, and realize the monitoring effect of the system adjustment instruction execution.

[0060] Figures 5-8When the oil pumping control unit adjusts the seat sealing of the self-verification packer 3 according to the control instruction transmitted by the oil well data processing unit, the self-verification packer 3 can adopt a mechanical extrusion or a liquid expansion driving mode to generate an expansion deformation on the sealing sleeve 31, and the sealing sleeve 31 drives the verification nest 4 to generate a cooperative deformation, so that the double-ball connecting rod 61 inside the verification nest 4 generates a deformation action with the uniform outer ring 41 and the auxiliary inner ring 42. The pressure transmission sleeve 63 generates a movement action on the double-ball connecting rod 61 under the limitation of the angle receiving strip 7, first extrudes the elastic pressure sensing sleeve 62 close to the auxiliary inner ring 42 and one end, and then, under the abutting action of the sealing sleeve 31 and the inner wall of the oil well body 1, the elastic pressure sensing sleeve 62 in the direction of the uniform outer ring 41 generates a synchronous extrusion action, so that the pressure sensors in the two elastic pressure sensing sleeves 62 transmit pressure data to the oil well sealing verification unit, and the oil well sealing verification unit transmits the data to the verification feedback unit after processing, and judges that the extrusion deformation pressure generated by the elastic pressure sensing sleeve 62 in the direction of the uniform outer ring 41 is greater than the extrusion deformation pressure generated by the elastic pressure sensing sleeve 62 in the direction of the auxiliary inner ring 42, and then it is judged that the sealing sleeve 31 is in complete abutment with the inner wall of the oil well body 1 at this time, the seat sealing of the self-verification packer 3 is completed, and the purpose of instruction adjustment is achieved.

[0061] When the oil pumping control unit adjusts the unsealing of the self-verification packer 3 according to the control instruction transmitted by the oil well data processing unit, the self-verification packer 3 can adopt a mechanical tensile reset or a liquid reset driving mode to generate a reset deformation on the sealing sleeve 31, and the sealing sleeve 31 drives the verification nest 4 to generate a cooperative reset deformation, so that the double-ball connecting rod 61 inside the verification nest 4 generates a recovery deformation with the uniform outer ring 41 and the auxiliary inner ring 42. After the sealing sleeve 31 is not in abutment with the inner wall of the oil well body 1, the elastic pressure sensing sleeve 62 in the direction of the uniform outer ring 41 first generates an elastic recovery, so that the pressure inside it becomes smaller, and then, while the verification nest 4 continuously recovers with the sealing sleeve 31, the pressure transmission sleeve 63 generates a reset movement on the double-ball connecting rod 61 under the limitation of the angle receiving strip 7, releases the extrusion action on the elastic pressure sensing sleeve 62 in the direction of the auxiliary inner ring 42, so that the two elastic pressure sensing sleeves 62 generate an elastic recovery action, and then the pressure sensors in the two elastic pressure sensing sleeves 62 transmit pressure data to the oil well sealing verification unit, and the oil well sealing verification unit transmits the data to the verification feedback unit after processing, and judges that the pressure in the elastic pressure sensing sleeve 62 in the direction of the uniform outer ring 41 is less than or equal to the pressure in the elastic pressure sensing sleeve 62 in the direction of the auxiliary inner ring 42, and then it is judged that the sealing sleeve 31 is not in contact with the inner wall of the oil well body 1 at this time, and is completely reset, the seat sealing of the self-verification packer 3 is completed, and the purpose of instruction adjustment is achieved.

[0062] The third embodiment:

[0063] Figure 1 、 3 And 9-11 show that the induction cavity is close to and away from the two inner walls of the sealing sleeve 31 side embedded auxiliary electromagnetic sheet, and the auxiliary electromagnetic sheet is located on the upper and lower side of the corresponding uniform ring 41 and auxiliary inner ring 42, the oil well data processing unit is also connected with the forced control unit, the forced control unit is connected with the auxiliary electromagnetic sheet, through the cooperation of the auxiliary electromagnetic sheet and the forced control unit, the system is further increased in action and robustness, after the feedback compensation effect, the self-verification packer 3 still does not reach the adjustment purpose, the forced control unit can realize the auxiliary effect of the verification nest 4 on the sealing sleeve 31 through the magnetic force of the auxiliary electromagnetic sheet on the verification nest 4, so as to ensure the safety and stability of the oil pumping work, and provide time for the maintenance of the technical personnel, and improve the emergency effect of the system.

[0064] When the self-verification packer 3 adopts the mechanical up-down movement mode to expand and restore the deformation adjustment of the sealing sleeve 31, the auxiliary electromagnetic sheet can be set in the verification nest 4 to control the forced adjustment, if the self-verification packer 3 adopts the liquid driven effect to realize the expansion and recovery deformation adjustment of the sealing sleeve 31, the branch pipe can be used to drive the liquid into the verification nest 4, the branch pipe is controlled by the electromagnetic valve, and the forced control unit controls the driving liquid to enter or pump out the verification nest 4, so as to realize the forced deformation effect of the verification nest 4, so as to meet the adaptability of the forced control unit to different driving modes of the self-verification packer 3.

[0065] The double ball connecting rod 61, the elastic pressure sensing sleeve 62 and the pressure transmission sleeve 63 are made of elastic material, and the stiffness coefficient of the double ball connecting rod 61 is greater than that of the elastic pressure sensing sleeve 62, and the stiffness coefficient of the double ball connecting rod 61 is less than that of the pressure transmission sleeve 63, so that the elastic pressure sensing sleeve 62 is deformed in the movement process of the pressure transmission sleeve 63, the double ball connecting rod 61 is elastically deformed under the forced adjustment of the electromagnetic force, and the pressure transmission sleeve 63 is elastically deformed under the forced unsealing effect of the electromagnetic force.

[0066] Figure 1 、 3And 9-11 show that when the seat adjustment of the self-verification packer 3 is carried out, if it is judged that the extrusion deformation pressure generated by the elastic pressure sensing sleeve 62 in the direction of the uniform outer ring 41 is less than or equal to the extrusion deformation pressure generated by the elastic pressure sensing sleeve 62 in the direction of the auxiliary inner ring 42, it is judged that the sealing sleeve 31 is not in good abutment with the inner wall of the oil well body 1, and after subsequent feedback compensation, there is still no change, the oil well data processing unit sends a warning signal to the monitoring workbench through the oil well data transmission unit, and also sends a feedback forced instruction to the forced control unit, so that the forced control unit energizes the two auxiliary electromagnetic sheets in the reaction cavity of the verification nest 4, so that they generate repulsive electromagnetic force of the same magnetism, assisting the expansion of the verification nest 4, so that the verification nest 4 can assist the sealing sleeve 31 to abut against the inner wall of the oil well body 1, and then according to the pressure data in the elastic pressure sensing sleeve 62, the current of the auxiliary electromagnetic sheet is controlled to ensure the effectiveness and persistence of the seat.

[0067] When the self-verification packer 3 is in the unsealing adjustment, if the pressure in the elastic pressure sensing sleeve 62 in the direction of the uniform outer ring 41 is greater than the pressure in the elastic pressure sensing sleeve 62 in the direction of the auxiliary inner ring 42, it is judged that the sealing sleeve 31 is in continuous abutment with the inner wall of the oil well body 1, forming a poor unsealing state, and after subsequent feedback compensation, there is still no change, the oil well data processing unit sends a warning signal to the monitoring workbench through the oil well data transmission unit, and also sends a feedback forced instruction to the forced control unit, so that the forced control unit energizes the two auxiliary electromagnetic sheets in the reaction cavity of the verification nest 4, so that they generate attractive electromagnetic force of different magnetism, assisting the contraction of the verification nest 4, so that the verification nest 4 can assist the sealing sleeve 31 to separate the inner wall of the oil well body 1, and then according to the pressure data in the elastic pressure sensing sleeve 62, the current of the auxiliary electromagnetic sheet is controlled to ensure the effectiveness and persistence of the seat.

[0068] It should be noted that in normal use, the forced control unit and the auxiliary electromagnetic sheet are in the closed state, so as to reduce the energy consumption of the system, reduce the operation burden of the system, and also avoid damage to the verification nest 4 caused by electromagnetic force, ensuring the safety and stability of the oil pumping process.

[0069] In combination with the current actual demand, the protection scope of the above-mentioned embodiments of the present application is not limited thereto, various changes made within the knowledge range of those skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. An intelligent well completion system for oil and gas well production, characterized in that: It includes an oil well body (1) and an oil well data processing unit installed in the main control box and cooperating with the oil well body (1). The oil well data processing unit is connected to an oil well environment acquisition unit and an oil pumping control unit. The oil well body (1) is equipped with a pump pipe (11), and the lower end of the pump pipe (11) is connected to an electrical control component and a self-verifying packer (3) that cooperates with the electrical control component. The self-verifying packer (3) includes multiple packer sleeves (31), and the outer end of the packer sleeve (31) is provided with a verification nest (4) that cooperates with the oil well body (1). The oil well data processing unit is also connected to an oil well isolation verification unit that cooperates with the verification nesting (4), and the oil well isolation verification unit is connected to a verification feedback unit; The oil pumping control unit is respectively coordinated with the electrical control component, the self-verifying packer (3) and the verification feedback unit, and the oil well environment acquisition unit is connected to the environment acquisition device installed in the oil well body (1). The verification nest (4) has a sensing cavity. An auxiliary inner ring (42) is fixedly connected to the middle of the inner wall of the sensing cavity near the packer (31). A uniform outer ring (41) that cooperates with the auxiliary inner ring (42) is fixedly connected to the inner wall of the sensing cavity away from the packer (31). Multiple pressure verification components (6) are connected between the uniform outer ring (41) and the auxiliary inner ring (42). The pressure verification component (6) is provided with angle receiving strips (7) at both the upper and lower ends. The end of the angle receiving strip (7) away from the pressure verification component (6) is connected to a flexible receiving strip (71). The end of the flexible receiving strip (71) away from the angle receiving strip (7) is connected to the inner wall of the sensing cavity near the sealing sleeve (31). The pressure verification component (6) includes a double ball connecting rod (61) installed between the uniform outer ring (41) and the auxiliary inner ring (42). The outer end of the double ball connecting rod (61) is fitted with a pressure transmission sleeve (63). The pressure transmission sleeve (63) is fixedly connected to the two ends of the uniform outer ring (41) and the auxiliary inner ring (42) with elastic pressure sensing sleeves (62) that cooperate with the double ball connecting rod (61). The elastic pressure sensing sleeve (62) is equipped with a pressure sensor. The oil well sealing verification unit is connected to the pressure sensor signal. A pair of rotating rods arranged in a mirror image are fixedly connected to the outer end of the pressure transmission sleeve (63). The end of the angle receiving strip (7) away from the flexible receiving strip (71) is rotatably connected to the pressure transmission sleeve (63) through the rotating rod.

2. The intelligent well completion system for oil and gas well production according to claim 1, characterized in that: The outer end of the suffix (31) is provided with a verification auxiliary groove (32), and the outer end of the verification auxiliary groove (32) is fixedly connected with a verification nest (4), and the outer diameter of the verification nest (4) is equal to the outer diameter of the suffix (31).

3. The intelligent well completion system for oil and gas well production according to claim 1, characterized in that: The two inner walls of the sensing cavity, one near the packer sleeve (31) and the other far from it, are each fitted with an auxiliary electromagnetic plate. The oil well data processing unit is also connected to a forced control unit, which is signal-connected to the auxiliary electromagnetic plate.

4. The intelligent well completion system for oil and gas well production according to claim 1, characterized in that: The oil well body (1) is divided into pumping layer, first production layer (H1), first control layer (K1), second production layer (H2), second control layer (K2) and third production layer (H3) from top to bottom; The electronic control assembly includes an upper electromagnetic control valve (2) disposed on the first production layer (H1), a middle electromagnetic control valve (21) disposed on the second production layer (H2), and a lower electromagnetic control valve (22) disposed on the third production layer (H3).

5. The intelligent well completion system for oil and gas well production according to claim 4, characterized in that: The lower end of the pump oil pipe (11) is connected to the upper electromagnetic control valve (2). A self-verifying packer (3) is connected between the upper electromagnetic control valve (2) and the middle electromagnetic control valve (21) and between the middle electromagnetic control valve (21) and the lower electromagnetic control valve (22). The self-verifying packer (3) between the upper electromagnetic control valve (2) and the middle electromagnetic control valve (21) is located in the first control layer (K1), and the self-verifying packer (3) between the middle electromagnetic control valve (21) and the lower electromagnetic control valve (22) is located in the second control layer (K2).

6. The intelligent well completion system for oil and gas well production according to claim 5, characterized in that: Signal cables (5) are provided on the upper electromagnetic control valve (2), the middle electromagnetic control valve (21) and the lower electromagnetic control valve (22), and the oil well environment acquisition unit, the oil pumping control unit, the oil well isolation verification unit and the verification feedback unit are all connected to the corresponding device signals through the signal cables (5).

Images