Separated layer water injection control system

Abstract

The utility model relates to a layered water injection control system which comprises a ground controller and a sleeve, a control box is arranged in the sleeve, a plurality of packers and water distributors are arranged in the sleeve, the water distributors are arranged among the packers, and the ground controller, the control box and the water distributors are connected through wires. A control mainboard is arranged in the control box, a wiring pipe is arranged on a control box shell, a wiring column is arranged in the wiring pipe, a connector is arranged on the wire, a wiring hole is formed in the connector, and a sealing soft body is arranged on the connector. According to the separated layer water injection control system, the connection sealing performance between the wire and the control box is improved, it is guaranteed that external connection is convenient, and the sealing performance is also guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of stratified water injection, in particular to a stratified water injection control system. Background Art

[0002] In the process of oil field development, a large amount of water needs to be injected into the oil well to achieve the purpose of oil displacement, maintain or restore the oil layer pressure, and make the oil reservoir have a stronger driving force to increase the production speed and recovery rate of the oil reservoir. The commonly used stratified water distribution technologies in the field of oil and gas well water injection are mainly the following:

[0003] 1) Cast-and-dig water distributor technology: The water nozzle in the water injection well is cast and dredged through a steel wire on the ground. Its disadvantages are: it requires the use of complex special casting and dredging tools, and the casting and dredging operation is labor-intensive; it cannot obtain information on each water distribution layer in real time, and it cannot flexibly adjust the water distribution strategy; the water injection accuracy is low, and it cannot achieve refined stratified water injection.

[0004] 2) Storage-type intelligent water distribution technology: This type of water distributor has a flow collection function. Before going down the well, the water injection volume of each water injection layer must be preset based on experience. After going down the well, the built-in chip of the water distributor adjusts the actual water injection volume to be consistent with the preset value by controlling the motor to rotate and adjust the nozzle opening. Its disadvantages are: it is impossible to obtain data of each water distribution layer in real time; the water distributor is storage-type, and the injection volume of each water injection layer needs to be set before going down the well, and it cannot be flexibly adjusted on the ground; the water distributor is battery-powered, and the instrument life is short.

[0005] 3) Wireless intelligent water distribution technology: A wireless communication device is added to the storage-type intelligent water distributor. Each storage-type intelligent water distributor works independently in the well. When it is necessary to obtain water injection data or adjust the water injection volume, it is necessary to use a ground controller to connect the communication instrument through the logging cable to each water distributor, and perform data communication layer by layer. After the communication is completed, the communication instrument is raised to the wellhead. Its disadvantages are: the data of each water distribution layer and the water injection volume control need to be communicated layer by layer by the communication instrument, and real-time measurement and adjustment cannot be achieved; the water distributor is powered by disposable batteries, and the instrument life is short.

[0006] 4) Cable-type intelligent water distribution technology: This technology uses a ground controller to connect to the water distributors placed in each water injection layer through cables, power the intelligent water distributor, obtain the water injection data of the water distributor and adjust the water injection volume. Its disadvantages are: the cable needs to be passed from the lowest water distributor in the well to the wellhead, the cable is too long, and the risk of cable damage during construction is high; the cable needs to be protected by a cable guard at each oil pipe coupling, which increases the construction intensity and cost.

[0007] The prior art, such as the patent with publication number CN213574035U, solves the corresponding monitoring problem. However, due to the harsh use environment, the wiring head is usually buried inside the control box, which results in the need to clean the entire control box and then open the box body for maintenance and other operations, which is inconvenient to operate. Therefore, the sealing problem of the existing wires and the control box at the external connection has not been well improved and solved. Utility Model Content

[0008] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0009] In view of the following technical problems in the prior art: the prior art does not solve the problem of sealing design for the external connection between the wire and the control box.

[0010] In order to solve the above technical problems, the utility model provides the following technical solutions: a stratified water injection control system, including a ground controller and a casing, a control box is arranged in the casing, a plurality of packers and water distributors are arranged in the casing, the water distributors are arranged between the packers, and the ground controller, the control box and the water distributor are connected by wires, characterized in that: it also includes: a control mainboard is arranged in the control box, a wiring tube is arranged on the control box shell, a wiring post is arranged in the wiring tube, a connector is arranged on the wire, a wiring hole is arranged on the connector, and a sealing software is arranged on the connector.

[0011] As a preferred technical solution for a stratified water injection control system, the wiring tube is provided with an external thread, and the external thread is provided with a filling groove.

[0012] As a preferred technical solution for a stratified water injection control system, a locking sleeve is sleeved on the wire, and the locking sleeve comprises a straight tube and a conical tube, and the open ends of the straight tube and the conical tube are connected.

[0013] As a preferred technical solution for a stratified water injection control system, an internal thread is provided in the straight cylinder.

[0014] As a preferred technical solution for a stratified water injection control system, the sealing software is latex.

[0015] Beneficial effects of the utility model: the layered water injection control system of the utility model improves the connection sealing between the wire and the control box, which not only ensures the convenience of external connection but also ensures the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 It is a schematic diagram of the system structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the housing structure of the control box in the utility model;

[0019] Figure 3 This is a schematic diagram of the connector structure in the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the wiring tube in the utility model;

[0021] Figure 5 It is a schematic diagram of the connection structure of the connector and the connecting pipe in the utility model.

[0022] Figure numerals: casing 200, packer 202, ground controller 100, water distributor 203, control main board 201a, control box 201, terminal 201c, wiring hole 204b, connector 204a, wiring tube 201b, external thread 201d, filling groove 201e, conductor 204, locking sleeve 205, cone 205b, straight tube 205a, internal thread 205c, sealing software 204c. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] Example 1

[0028] Reference Figure 1 to Figure 5 The present embodiment provides a stratified water injection control system, including a ground controller 100 and a casing 200, wherein a control box 201 is arranged in the casing 200, wherein a plurality of packers 202 and a water distributor 203 are arranged in the casing 200, wherein the water distributor 203 is arranged between the packers 202, wherein the ground controller 100, the control box 201 and the water distributor 203 are connected by a wire 204, and further comprising: a control main board 201a is arranged in the control box 201, a wiring tube 201b is arranged on the shell of the control box 201, a wiring post 201c is arranged in the wiring tube 201b, a connector 204a is arranged on the wire 204, a wiring hole 204b is arranged on the connector 204a, and a sealing software 204c is arranged on the connector 204a.

[0029] In this embodiment, the connection control of the control box 201 and the water distributor 203 by the ground controller 100 is the prior art. With specific reference to the solution of the background technology solution, the utility model is designed for the specific connection between the wire 204 and the control box 201 to solve the sealing problem of the wire 204 when connected to the outside of the control box 201. Specifically, the control main board 201a is provided with wiring pins, and the control box 201 shell is provided with a wiring tube 201b for transitionally connecting the internal and external wiring. For the inside of the wiring box, the wiring pins and the wiring tube 201b are connected by wires. Specifically, the connection and fixation with the wiring pins can adopt the existing connection method of male and female connectors with locks, which will not be repeated. The same is true for the connection method with the wiring tube 201b in the internal part of the wiring box.

[0030] For the external connection terminal 201c, since it is necessary to ensure the sealing and connection stability, a sealing software 204c is provided to seal it.

[0031] Furthermore, the wiring tube 201b is provided with an external thread 201d, and the external thread 201d is provided with a filling groove 201e.

[0032] The filling groove 201e can be filled and sealed, and the end portion can be contracted and clamped inward during the screwing process to achieve sealing and fixing.

[0033] Furthermore, a locking sleeve 205 is sleeved on the wire 204, and the locking sleeve 205 includes a straight tube 205a and a conical tube 205b, the open ends of the straight tube 205a and the conical tube 205b are connected, and an internal thread 205c is arranged in the straight tube 205a; the sealing software 204c is latex.

[0034] Specifically, the locking sleeve 205 is disposed on the wire 204 and can move on the wire 204. After the connector 204a is connected to the terminal 201c in the wiring tube 201b, the locking sleeve 205 is screwed onto the external thread 201d. During the screwing process, the sealing software 204c is pushed to fill the filling groove 201e and the area between the connector 204a and the wiring tube 201b to achieve sealing.

[0035] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stratified water injection control system, comprising a surface controller (100) and a casing (200), wherein a control box (201) is arranged in the casing (200), wherein a plurality of packers (202) and a water distributor (203) are arranged in the casing (200), wherein the water distributor (203) is arranged between the packers (202), and wherein the surface controller (100), the control box (201) and the water distributor (203) are connected via a wire (204), wherein: The invention further comprises: a control main board (201a) is arranged in the control box (201); a wiring tube (201b) is arranged on the shell of the control box (201); a wiring post (201c) is arranged in the wiring tube (201b); a connector (204a) is arranged on the wire (204); a wiring hole (204b) is arranged on the connector (204a); and a sealing software (204c) is arranged on the connector (204a).

2. The stratified water injection control system according to claim 1, characterized in that: The wiring tube (201b) is provided with an external thread (201d), and the external thread (201d) is provided with a filling groove (201e).

3. The stratified water injection control system according to claim 1 or 2, characterized in that: A locking sleeve (205) is sleeved on the wire (204), and the locking sleeve (205) comprises a straight tube (205a) and a conical tube (205b), and the open ends of the straight tube (205a) and the conical tube (205b) are connected.

4. The stratified water injection control system according to claim 3 is characterized in that: The straight cylinder (205a) is provided with an internal thread (205c).

5. The stratified water injection control system according to claim 4, characterized in that: The sealing software (204c) is latex.

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