Compound control type layered oil production device

Abstract

The invention provides a compound control type layered oil production device, and relates to the technical field of oilfield development, the device comprises a body and a bridge type short section, the two sides of the body are respectively provided with an upper outer cylinder and a lower outer cylinder, the side wall of the body is provided with a first liquid inlet, and the first liquid inlet is provided with an oil nozzle adjusting assembly; a center pipe is arranged in the center of the body and extends into the upper outer cylinder from the body, and the oil nozzle adjusting assembly is located on one side of the center pipe. The bridge type short section is connected with the lower outer cylinder, a second liquid inlet is formed in the side wall of the bridge type short section, and an adjusting structure is arranged in the bridge type short section; an oil nozzle jacket is connected below the oil nozzle adjusting assembly, a liquid guide pipe is arranged below the oil nozzle jacket, and the liquid guide pipe can be communicated with the central pipe through a bridge type short section to form a first liquid inlet channel; the second liquid inlet can be communicated with the central pipe to form a second liquid inlet channel; the adjusting structure is used for adjusting and controlling the first liquid inlet channel and the second liquid inlet channel. The problem that target layer regulation and control cannot be achieved after an electronic control product fails can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield development, in particular to a composite controlled stratified oil production device. Background Art

[0002] In the early stages of offshore oilfield well lifting, combined production is the main method. However, as production reaches the middle and late stages, interlayer conflicts and interferences become more prominent, and the demand for interlayer regulation is increasing.

[0003] Currently, the more commonly used interlayer control tools mainly include three categories: mechanical switch-type sliding sleeves, hydraulic control devices, and electric control devices. Among them, sliding sleeves are relatively simple, but the operation timeliness is poor. The hydraulic control and electric control types are easy to operate, but there are still shortcomings in long-term stability. For example, if the circuit of the electric control device fails, the switch control of the current layer cannot be performed, which has a serious impact on the normal operation of the oil well. The problem can only be solved by repairing the well and replacing the downhole tools, and the implementation cost is high.

[0004] Therefore, a composite controlled stratified oil production device is urgently needed to solve the above technical problems. Summary of the Invention

[0005] The present invention aims to provide a composite-controlled stratified oil production device to address the existing technical problem of preventing water faucet opening and closing adjustments due to circuit failures in the electrical control device of an oil well. The various technical effects achieved by the preferred technical solution among the various technical solutions provided by the present invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The present invention provides a composite controlled stratified oil production device, comprising a main body and a bridge-type short section, wherein:

[0008] An upper outer cylinder and a lower outer cylinder are respectively provided on both sides of the body, a first liquid inlet is provided on the side wall of the body, and a nozzle adjustment assembly is provided at the first liquid inlet; a central tube is provided in the center of the body, the central tube extends from the body to the upper outer cylinder, and the nozzle adjustment assembly is located on one side of the central tube;

[0009] The bridge-type short section is connected to the lower outer tube, a second liquid inlet is provided on the side wall of the bridge-type short section, and an adjustment structure is provided inside the bridge-type short section; the bottom of the oil nozzle adjustment assembly is connected to the oil nozzle jacket, and a liquid guide tube is provided below the oil nozzle jacket, and the liquid guide tube can be connected with the central tube through the bridge-type short section to form a first liquid inlet channel; the second liquid inlet can be connected with the central tube to form a second liquid inlet channel; the adjustment structure is used to control the switch of the first liquid inlet channel and the second liquid inlet channel.

[0010] Preferably, the regulating structure adopts a rotating sleeve, and a first inlet and a second inlet are provided on the rotating sleeve, the first inlet is used to communicate with the first liquid inlet, and the second inlet is used to communicate with the second liquid inlet.

[0011] Preferably, a spring is provided in the bridge-type short section, and the spring is provided below the rotating sleeve.

[0012] Preferably, the oil nozzle adjustment assembly includes a shell and a power device, a transmission rod and an oil nozzle arranged in the shell. The shell is arranged in the upper outer cylinder. The power device can drive the transmission rod to move to control the switching action of the oil nozzle.

[0013] Preferably, the nozzle adjustment assembly further comprises a transmission rod outer sleeve, a movable sealing assembly and a nozzle locking cap, wherein:

[0014] The transmission rod outer sleeve is arranged on the outer side of the transmission rod;

[0015] The movable sealing assembly is arranged between the transmission rod outer sleeve and the oil nozzle;

[0016] The oil nozzle locking cap is arranged between the transmission rod and the oil nozzle.

[0017] Preferably, a sand control tube is further included, which is arranged between the upper outer tube and the body and located outside the first liquid inlet.

[0018] Preferably, a data acquisition and processing short section is provided in the upper outer tube, and a flow meter upper probe and a flow meter lower probe are provided on the outside of the central tube. The flow meter upper probe and the flow meter lower probe are located in the upper outer tube and are both connected to the data acquisition and processing short section signal.

[0019] Preferably, a water monitoring seat is provided in the lower outer cylinder, and the two ends of the water monitoring seat are respectively connected to the oil nozzle jacket and the liquid guide tube. A water detection probe is provided in the water monitoring seat, and the water monitoring probe is connected to the data acquisition and processing short section signal.

[0020] Preferably, the upper outer cylinder is connected to the upper joint, the bridge nipple is connected to the lower joint, and one end of the upper joint is provided with an oil pipe thread for connection with the oil pipe.

[0021] Preferably, a main line cable sealing head is provided in the upper joint.

[0022] The present invention provides a composite controlled stratified oil production device, comprising a body and a bridge-type short section, wherein an upper outer tube and a lower outer tube are respectively provided on both sides of the body, and a first liquid inlet is provided on the side wall of the body, a nozzle adjustment assembly is provided at the first liquid inlet, a nozzle outer shell is connected below the nozzle adjustment assembly, a liquid guide tube is provided below the nozzle outer shell, a central tube extending into the upper outer tube is provided at the center of the body, a bridge-type short section is provided on the other side of the lower outer tube, and a second liquid inlet is provided on the side wall of the bridge-type short section, so that the first liquid inlet is connected to the nozzle outer shell, the liquid guide tube, the bridge-type short section and the central tube are connected in a manner .... The first liquid inlet channel is formed, and the second liquid inlet is connected to the central pipe to form the second liquid inlet channel. The first liquid inlet channel and the second liquid inlet channel are switched on and off by an adjustment structure arranged inside the bridge-type short section. That is, this composite-controlled stratified oil production device has a dual liquid inlet channel structure. The first liquid inlet channel is set as a liquid inlet channel electrically controlled by a signal cable; the second liquid inlet channel adopts a bridge-type channel design. When cable operation is performed, the liquid inlet channel of the lower stratified oil production tool and the rotating sleeve of the stratified oil production tool of the target layer are adjusted and controlled, while the other layers can still achieve formation liquid production. When the electrically controlled electric control device fails, the switch function can be realized through cable operation. While solving the problem of formation liquid production flow and water content monitoring, it can extend the life of the stratified oil production process, solve the problem that the target layer cannot be controlled after the current electric control product fails, and extend the life of the stratified oil production well. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of an embodiment of a composite controlled stratified oil production device according to the present invention;

[0025] Figure 2 This is a schematic diagram of flow monitoring and circuit locations in the composite controlled stratified oil production device of the present invention;

[0026] Figure 3 yes Figure 1 AA cross-sectional structural diagram;

[0027] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0028] Figure 5 yes Figure 1 Schematic diagram of the CC cross-sectional structure.

[0029] In the figure: 1. Upper connector; 2. Main line cable sealing head; 3. Upper outer tube; 4. Center tube; 5. Adjustment short section cable sealing head; 6. Housing; 7. Motor module; 8. Bearing connector; 9. Bearing; 10. Bearing seat; 11. Transmission rod; 12. Transmission rod housing; 13. Sand control tube; 14. Mobile sealing assembly; 15. Nozzle; 16. Nozzle locking cap; 17. Main body; 18. Nozzle housing; 19. Lower outer tube; 20. Water monitoring seat; 21. Water monitoring probe; 22. Guide Liquid pipe; 23. Adjustment structure; 24. Bridge short section; 25. Spring; 26. Lower joint; 27. Flow meter upper probe; 28. Flow meter lower probe; 29. Data acquisition and processing short section; 30. Upper joint for connecting the water content monitoring line; 31. Middle joint for the main line cable; 32. Lower joint for the main line cable; 33. Lower joint for connecting the water content monitoring line; 34. Main line cable connector; 100. First liquid inlet; 200. Second liquid inlet; 231. First inlet; 232. Second inlet. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

[0033] Figure 1 It is a structural diagram of this embodiment, as shown in FIG. Figure 1As shown, this embodiment provides a composite controlled stratified oil production device, including a body 17 and a bridge-type short section 24 .

[0034] An upper outer cylinder 3 and a lower outer cylinder 19 are disposed on either side of the body 17. A first liquid inlet 100 is disposed on the sidewall of the body 17. A nozzle adjustment assembly is located at the first liquid inlet 100. In this embodiment, the nozzle adjustment assembly includes a nozzle 15 and an adjustment assembly for adjusting the nozzle 15. A central tube 4 is disposed in the center of the body 17, extending from the body 17 into the upper outer cylinder 3. The nozzle adjustment assembly is located on one side of the central tube 4.

[0035] The bridge nipple 24 is connected to the lower outer tube 19, a second liquid inlet 200 is provided on the side wall of the bridge nipple 24, and an adjustment structure 23 is provided inside the bridge nipple 24; the bottom of the nozzle adjustment assembly is connected to the nozzle housing 18, and a liquid guide tube 22 is provided below the nozzle housing 18, and the liquid guide tube 22 can be connected to the central tube 4 through the bridge nipple 24 to form a first liquid inlet channel; the second liquid inlet 200 can be connected to the central tube 4 to form a second liquid inlet channel; the adjustment structure 23 is used to control the opening and closing of the first liquid inlet channel and the second liquid inlet channel.

[0036] Figure 2 This is a schematic diagram of flow monitoring and circuit location in this embodiment. Figure 2 As shown, in this embodiment, a data acquisition and processing sub 29 is disposed within the upper outer tube 3, and an upper flowmeter probe 27 and a lower flowmeter probe 28 are disposed on the outside of the central tube 4. Preferably, the upper flowmeter probe 27 and the lower flowmeter probe 28 are threadedly connected to the central tube 4. The upper flowmeter probe 27 and the lower flowmeter probe 28 are located within the upper outer tube 3 and are both signal-connected to the data acquisition and processing sub 29.

[0037] With this arrangement, when formation fluid passes through the central pipe 4, the flowmeter's upper probe 27 and lower probe 28 emit flow monitoring signals, monitor and analyze the fluid flow rate, and transmit the data to the data acquisition and processing sub 29. Furthermore, the central pipe 4 stabilizes the fluid flow, ensuring accurate monitoring of the fluid flow parameters as the formation fluid moves through it.

[0038] Optionally, in this embodiment, a water monitoring seat 20 is provided in the lower outer cylinder 19 , and the two ends of the water monitoring seat 20 are respectively connected to the nozzle sleeve 18 and the liquid guide tube 22 , and a water monitoring probe 21 is provided in the water monitoring seat 20 , and the water monitoring probe 21 is connected to the data acquisition and processing short section 29 for signal connection.

[0039] The nozzle housing 18 can provide a liquid inlet channel for the formation fluid. A water monitoring seat 20, a water monitoring probe 21 and a liquid guide tube 22 are arranged below the nozzle housing 18 to realize water monitoring of the formation fluid.

[0040] In this embodiment, by placing the water monitoring probe 21 in the formation fluid inlet channel, the formation fluid passing through the nozzle 15 enters the water monitoring seat 20 through the nozzle jacket 18. The nozzle jacket 18 plays a role in stabilizing the fluid before entering the water monitoring probe 21, ensuring that the water monitoring probe 21 accurately and in real time monitors the water content of the formation fluid.

[0041] In this embodiment, the center tube 4 and nozzle housing 18 are both located within the main body 17, which is threadedly connected to both the upper and lower outer tubes 3 and 19. The upper end of the main body 17 is threadedly connected to the outer shell 6, the data acquisition and processing sub 29, the upper connector 30 for the water monitoring line, and the middle connector 31 for the main line cable. The lower end of the main body 17 is threadedly connected to the lower connector 32 for the main line cable and the lower connector 33 for the water monitoring line.

[0042] Specifically, Figure 3 yes Figure 1 AA cross-sectional structural diagram, Figure 4 yes Figure 1 BB cross-sectional structure diagram, as shown in Figure 3 and Figure 4 As shown, in this embodiment, the ends of a water monitoring seat 20 are connected to the nozzle housing 18 and the liquid guide tube 22 via threads, respectively. With this arrangement, formation fluid passing through the nozzle 15 enters the water monitoring seat 20 through the nozzle housing 18, where it is detected and analyzed by the water monitoring probe 21. The signal is then transmitted to the data acquisition and processing sub 29 via the water monitoring line connection lower connector 33 and the water monitoring line connection upper connector 30, thereby enabling real-time monitoring of the water parameters of the target layer.

[0043] By providing a liquid guide tube 22 connected to the bridge sub 24, the formation fluid is guided into the regulating structure 23 inside the bridge sub 24. For ease of use, in this embodiment, the regulating structure 23 is a rotating sleeve with a first inlet 231 and a second inlet 232 provided thereon. The first inlet 231 is used to communicate with the first liquid inlet 100, and the second inlet 232 is used to communicate with the second liquid inlet 200.

[0044] Specifically, Figure 5 yes Figure 1 The cross-sectional structure diagram of CC is as follows: Figure 1 and Figure 5As shown, the bridge sub 24 in this embodiment is threadedly connected to the lower outer cylinder 19. An axially rotatable rotating sleeve is provided within the bridge sub 24. Axial rotation of the rotating sleeve enables opening and closing of the formation fluid channel. Furthermore, the first inlet 231 connecting the rotating sleeve and the liquid guide tube 22 serves as a nozzle channel electrically controlled by a signal cable, while the second inlet 232 connecting the rotating sleeve and the bridge sub 24 serves as a nozzle channel controlled by cable operations. This composite-controlled stratified oil production device features a dual liquid inlet channel structure: the first liquid inlet channel is electrically controlled by a signal cable; the second liquid inlet channel utilizes a bridge-type channel design. During cable operations, while the liquid inlet channel of the lower stratified oil production tool is controlled by the rotating sleeve of the target stratified oil production tool, formation fluid production can still be achieved in other strata.

[0045] With such a setting, this composite-controlled stratified oil production device can realize the switching function through cable operation when the electronically controlled electronic control device fails. While solving the problem of formation fluid flow and water content monitoring, it realizes the function of nozzle adjustment through signal cable. At the same time, it has the function of realizing nozzle adjustment through cable operation and has a dual nozzle function, which can extend the life of the stratified oil production process, solve the problem that the target layer cannot be controlled after the current electronic control product fails, and extend the life of the stratified production well.

[0046] As an optional implementation, a spring 25 is provided in the bridge sub 24 in this embodiment. The spring 25 is provided below the rotating sleeve and is used to prevent the oil nozzle from automatically opening and closing due to fluctuations in production fluid during the downhole production process through the pre-tightening force of the spring 25.

[0047] As an optional embodiment, the nozzle adjustment assembly includes a shell 6 and a power device, a transmission rod 11 and a nozzle 15 arranged in the shell 6. The shell 6 is arranged in the upper outer tube 3. The power device can drive the transmission rod 11 to move, which is used to control the switching action of the nozzle 15.

[0048] Among them, the power device includes a motor module 7, a bearing connector 8, a bearing 9 and a bearing seat 10. The working principle of this embodiment is: the motor module 7 is connected to the bearing seat 10 through the keyway structure of the bearing connector 8 and realizes the transmission of the torque of the motor module 7 to the transmission rod 11; through the cooperation of the bearing seat 10 and the transmission rod 11, the rotational motion of the motor module 7 is converted into the axial movement of the transmission rod 11, thereby realizing the switching action of the oil nozzle 15.

[0049] The nozzle adjustment assembly in this embodiment also includes a transmission rod housing 12, a movable sealing assembly 14, and a nozzle locking cap 16. The transmission rod housing 12 is disposed on the outside of the transmission rod 11, i.e., the transmission rod 11 is connected to the bearing seat 10 and is located inside the transmission rod housing 12. The movable sealing assembly 14 is disposed between the transmission rod housing 12 and the nozzle 15 and is used to achieve a movable seal between the transmission rod 11 and the body 17. The nozzle locking cap 16 is disposed between the transmission rod 11 and the nozzle 15 and is used to secure the nozzle 15 to the transmission rod 11 and prevent the nozzle 15 from loosening within the nozzle housing 18. The nozzle adjustment assembly also includes an adjusting short-section cable sealing head 5, which is connected to the adjusting short-section housing 6 via threads.

[0050] As an optional embodiment, a sand control tube 13 is further included. The sand control tube 13 is arranged between the upper outer tube 3 and the body 17 and is located outside the first liquid inlet 100 .

[0051] In this embodiment, a sand prevention tube 13 is provided on the outside of the first liquid inlet 100, that is, the sand prevention tube 13 is located outside the liquid inlet of the oil nozzle 15, which is used to perform sand blocking treatment on the liquid entering the formation, thereby preventing the problem of sand jamming and inability to adjust the oil nozzle 15 caused by large particles of sand in the formation.

[0052] As an optional embodiment, the upper outer tube 3 is connected to the upper joint 1, the bridge nipple 24 is connected to the lower joint 26, and one end of the upper joint 1 is provided with an oil pipe thread for connecting to the oil pipe.

[0053] In this embodiment, the upper outer cylinder 3 and upper joint 1, as well as the bridge sub 24 and lower joint 26, are all connected by threads. Specifically, the upper joint 1 is a circular cylindrical structure, with one end surface having API tubing threads for connection to the tubing. It internally features cable connector threads for connection to the main line cable connector 34, and internally includes a sealing surface and step for positioning and sealing with the center tube 4. The other end surface is threaded for connection to the upper outer cylinder 3, and internally, threads for connection to the main line cable sealing head 2. In this embodiment, the main line cable sealing head 2 is located within the upper joint 1.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A composite controlled stratified oil production device, characterized in that: It includes the main body and the bridge sub, including: An upper outer cylinder and a lower outer cylinder are respectively provided on both sides of the body, a first liquid inlet is provided on the side wall of the body, and a nozzle adjustment assembly is provided at the first liquid inlet; a central tube is provided in the center of the body, the central tube extends from the body to the upper outer cylinder, and the nozzle adjustment assembly is located on one side of the central tube; The bridge-type short section is connected to the lower outer tube, a second liquid inlet is provided on the side wall of the bridge-type short section, and an adjustment structure is provided inside the bridge-type short section; the bottom of the oil nozzle adjustment assembly is connected to the oil nozzle jacket, and a liquid guide tube is provided below the oil nozzle jacket, and the liquid guide tube can be connected with the central tube through the bridge-type short section to form a first liquid inlet channel; the second liquid inlet can be connected with the central tube to form a second liquid inlet channel; the adjustment structure is used to control the switch of the first liquid inlet channel and the second liquid inlet channel.

2. The composite controlled stratified oil production device according to claim 1, characterized in that: The regulating structure adopts a rotating sleeve, and a first inlet and a second inlet are provided on the rotating sleeve. The first inlet is used to communicate with the first liquid inlet, and the second inlet is used to communicate with the second liquid inlet.

3. The composite controlled stratified oil production device according to claim 2, characterized in that: A spring is arranged in the bridge-type short section, and the spring is arranged below the rotating sleeve.

4. The composite controlled stratified oil production device according to any one of claims 1 to 3, characterized in that: The oil nozzle adjustment assembly includes a shell and a power device, a transmission rod and an oil nozzle arranged in the shell. The shell is arranged in the upper outer cylinder. The power device can drive the transmission rod to move, so as to control the switching action of the oil nozzle.

5. The composite controlled stratified oil production device according to claim 4, characterized in that: The oil nozzle adjustment assembly further includes a transmission rod outer sleeve, a movable sealing assembly and an oil nozzle locking cap, wherein: The transmission rod outer sleeve is arranged on the outer side of the transmission rod; The movable sealing assembly is arranged between the transmission rod outer sleeve and the oil nozzle; The oil nozzle locking cap is arranged between the transmission rod and the oil nozzle.

6. The composite controlled stratified oil production device according to any one of claims 1 to 3, characterized in that: It also includes a sand control pipe, which is arranged between the upper outer tube and the body and is located outside the first liquid inlet.

7. The composite controlled stratified oil production device according to any one of claims 1 to 3, characterized in that: A data acquisition and processing short section is arranged in the upper outer tube, and a flow meter upper probe and a flow meter lower probe are arranged on the outside of the central tube. The flow meter upper probe and the flow meter lower probe are located in the upper outer tube and are both connected to the data acquisition and processing short section for signal connection.

8. The composite controlled stratified oil production device according to claim 7, characterized in that: A water monitoring seat is provided in the lower outer cylinder, and the two ends of the water monitoring seat are respectively connected to the nozzle jacket and the liquid guide tube. A water detection probe is provided in the water monitoring seat, and the water monitoring probe is connected to the data acquisition and processing short section signal.

9. The composite controlled stratified oil production device according to any one of claims 1 to 3, characterized in that: The upper outer tube is connected to the upper joint, the bridge nipple is connected to the lower joint, and one end of the upper joint is provided with an oil pipe thread for connecting with the oil pipe.

10. The composite controlled stratified oil production device according to claim 9, characterized in that: A main line cable sealing head is provided in the upper joint.

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