Efficient scale preventer under pump
By using high-efficiency scale anti-scaling devices under pumps in oil field development, using Hefei Media and turbine technology to destroy the scale chain, the problem of pipe wall scale caused by high mineralization water in the formation is solved, and consumption reduction and efficiency reduction and management costs are achieved. effect.
Patent Information
- Application Number
- CN202421474571.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In oil field development, high mineralization water in the formation causes pipe wall scale, shrinking overflow channels, increasing pump return pressure drop, reducing pump efficiency, and existing anti-scaling measures are costly to manage.
A highly efficient scale-proof device under pump is designed to release free electrons using the financial media, and to combine turbine stirring to destroy the scale chain, prevent the scale ions from crystallizing and delay the formation liquid scale ions binding.
It effectively prevents the formation fluid from being scaled during lifting, extends the pump inspection cycle of the oil pump, reduces production costs, increases economic benefits, and achieves the purpose of reducing consumption and increasing efficiency.
Smart Images
Figure CN222501690U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-efficiency anti-scaling devices, in particular to a high-efficiency anti-scaling device under a pump. Background Art
[0002] In the middle and late stages of oil field development, the amount of high-mineralized water in the formation continues to rise. As the pressure, temperature and flow rate of the high-mineralized water in the formation change, scale ions continue to precipitate, crystallize and become scale that is adsorbed on the walls of the pipes it flows through. Over time, a thick layer of scale forms on the walls of the flow channel. The thick layer of scale not only reduces the size of the flow channel, but also increases the pump back pressure and reduces pump efficiency. If scale flakes fall into the downhole pump, it will also jam the pump.
[0003] In order to prevent scaling on the inner wall of the lifting string of the conventional rod pump oil production system, ensure the smooth flow of formation fluid in the lifting string and avoid pump jamming, the anti-scaling measures currently used in the conventional rod pump oil production system in China include: regular and quantitative addition of anti-scaling liquid and other anti-scaling devices into the well. The above technical measures have achieved a certain efficiency improvement purpose, but there is a problem of high management cost.
[0004] Based on the above problems, this application proposes a new high-efficiency under-pump scale preventer, which does not change the original working state during normal production, utilizes the physical principle of the release of free electrons by the composite financial media, and cooperates with turbine stirring to destroy the scale chain and prevent the crystallization of scale ions, thereby delaying the combination of scale ions in the high-mineralization liquid of the formation and preventing scaling of the formation fluid during the lifting process. Utility Model Content
[0005] The utility model aims to provide an under-pump high-efficiency anti-scaling device, comprising an anti-scaling device body, one end of the anti-scaling device body being externally connected to an upper coupling, positioning plugs being respectively arranged at both ends of the interior of the anti-scaling device body, a core shaft being rotatably arranged at the center position of the positioning plug, anti-scaling sheets being arranged externally at the left, middle and right positions of the core shaft, a turbine being arranged on the core shaft between two adjacent anti-scaling sheets, and a spacer being sleeved on the core shaft between the turbine and the anti-scaling sheet adjacent to the turbine.
[0006] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model respectively arranges an anti-scaling sheet and a turbine on the core shaft, releases ions into the formation fluid through the anti-scaling sheet, destroys the scaling ion chain of the formation fluid, prevents and delays the formation and crystallization of the scaling ion chain, and the arranged turbine rotates under the push of the formation fluid to stir and cut the formation fluid, so that the ions released by the anti-scaling sheet in the formation fluid are more uniform and the scaling ion chain is shorter. The above steps are repeated to prevent the scaling of the high-mineralization formation fluid in the lifting pipe column, thereby achieving the purpose of reducing consumption and increasing efficiency.
[0007] The utility model can not only effectively prolong the pump inspection cycle of conventional rod pumping pumps, reduce production costs and increase economic benefits, but also provide a good supporting technology for conventional rod pumping lifting to improve efficiency and reduce consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the utility model;
[0009] The reference numerals and names in the figures are as follows:
[0010] 1. Positioning plug; 2. Spacer; 3. Anti-scale device body; 4. Anti-scale sheet; 5. Turbine; 6. Mandrel; 7. Upper coupling. DETAILED DESCRIPTION
[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0012] As attached Figure 1 As shown, the utility model provides an under-pump high-efficiency anti-scaling device, including an anti-scaling device body 3, one end of the anti-scaling device body 3 is externally connected to the upper coupling 7, positioning screw plugs 1 are respectively provided at both ends of the interior of the anti-scaling device body 3, a core shaft 6 is rotatably provided at the center position of the positioning screw plug 1, and anti-scaling sheets 4 are externally provided at the left, middle and right positions of the core shaft 6, a turbine 5 is provided on the core shaft 6 between two adjacent anti-scaling sheets 4, and a spacer sleeve 2 is provided on the core shaft 6 between the turbine 5 and the adjacent anti-scaling sheets 4.
[0013] Specifically, the outer diameter of the positioning thread plug 1 is provided with a thread connected and fixed to the inner diameter end of the anti-scaling device body 3, the center position of the inner diameter of the positioning thread plug 1 is provided with a sleeve matching the concave step opened on the core shaft 6, and the hollow part between the sleeve and the thread of the positioning thread plug 1 is evenly provided with support ribs, and liquid-permeable channels are formed between adjacent support ribs.
[0014] Specifically, both ends of the inner diameter of the anti-scaling device body 3 are provided with threads connected and fixed with the outer diameter of the positioning screw plug 1, and the rest is the inner wall of the equal-diameter through pipe. Both ends of the outer diameter of the anti-scaling device body 3 are short sections of 2-7 / 8 flat oil pipe buckles, which is a smooth tube with an outer diameter of 90mm.
[0015] Specifically, a through hole is provided at the center of the anti-scaling sheet 4, and the core shaft 6 can pass through the through hole provided on the anti-scaling sheet 4. Liquid-passing holes are provided on the radial disk of the anti-scaling sheet.
[0016] Specifically, the anti-scaling sheet 4 is a composite media sheet.
[0017] Specifically, the outer diameter of the core shaft 6 is a solid shaft with a full diameter, milled with grooves for placing spring clips, and tapered heads at both ends.
[0018] Specifically, a center hole is opened at the center position inside the turbine 5 , and the core shaft 6 can pass through the center hole opened on the anti-scaling sheet 4 .
[0019] Specifically, four angled turbine blades are milled at the outer edge of the turbine 5 , and the four angled turbine blades are arranged at the outer edge of the turbine 5 at an angle of 90°.
[0020] Working principle: when the high-efficiency anti-scaling device of the present application and the completion string are lowered into the well and the completion operation begins, when the surface pumping unit drives the downhole pump to pump liquid and low pressure begins to form at the lower end of the lifting string, the formation fluid enters from the liquid inlet at the lower end of the lifting string. The formation fluid first enters the high-efficiency anti-scaling device of the present application after entering the lifting string: the formation fluid passes through the liquid passage of the positioning wire plug 1, flushes the anti-scaling sheet 4, and then flows out from the liquid passage holes opened on the anti-scaling sheet 4. In this process, the anti-scaling sheet 4 releases ions into the formation fluid to perform the first treatment on the scaling ions in the formation fluid, destroy the scaling ion chain, prevent and delay the formation and combination of the scaling ion chain into crystals, and the formation fluid after the first treatment rushes to the turbine 5 again. The turbine 5 is in the formation The formation fluid is rotated under the push of the liquid, stirring and cutting the formation fluid, so that the ions released by the anti-scaling sheet 4 in the formation fluid are more uniform and the scaling ion chain is shorter. The formation fluid continues to rise and the anti-scaling sheet 4 releases ions into the formation fluid for the second time and then performs turbine stirring and cutting, so that the ions released by the anti-scaling sheet 4 in the formation fluid are more and more uniform, and the scaling ion chain is shorter. The formation fluid continues to rise and the anti-scaling sheet 4 releases ions into the formation fluid for the third time. After the complete anti-scaling treatment of the formation production fluid is completed, it enters the oil pump through the liquid passage set in the annulus between the radial sleeve of the positioning wire plug 1 and the thread, preventing the high-mineralization formation production fluid from scaling in the lifting pipe string, thereby achieving the purpose of reducing consumption and increasing efficiency.
[0021] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
Claims
1. A high-efficiency anti-scaling device under a pump, comprising an anti-scaling device body (3), one end of which is externally connected to an upper coupling (7), and is characterized in that: Positioning plugs (1) are respectively arranged at both ends of the interior of the anti-scaling device body (3); a core shaft (6) is rotatably arranged at the center position of the positioning plug (1); anti-scaling sheets (4) are arranged outside the left, middle and right positions of the core shaft (6); a turbine (5) is arranged on the core shaft (6) between two adjacent anti-scaling sheets (4); and a spacer sleeve (2) is sleeved on the core shaft (6) between the turbine (5) and its adjacent anti-scaling sheets (4).
2. The high-efficiency anti-scaling device under the pump according to claim 1 is characterized in that: The outer diameter of the positioning screw plug (1) is provided with a thread connected and fixed to the inner diameter end of the anti-scaling device body (3), the inner diameter center of the positioning screw plug (1) is provided with a sleeve matching the concave step provided on the core shaft (6), and the hollow part between the sleeve and the thread of the positioning screw plug (1) is evenly provided with support ribs.
3. The high-efficiency anti-scaling device under the pump according to claim 1 is characterized in that: A through hole is provided at the center of the anti-scaling sheet (4), and the core shaft (6) can pass through the through hole provided on the anti-scaling sheet (4). Liquid-passing holes are provided on the radial disk of the anti-scaling sheet.
4. The high-efficiency anti-scaling device under the pump according to claim 1 is characterized in that: The anti-scaling sheet (4) is a composite media sheet.
5. The high-efficiency anti-scaling device under the pump according to claim 1 is characterized in that: A center hole is provided at the center position inside the turbine (5), and the core shaft (6) can penetrate the center hole provided on the anti-scaling sheet (4).
6. The high-efficiency anti-scaling device under the pump according to claim 1 is characterized by: Four angled turbine blades are milled on the outer edge of the turbine (5), and the four angled turbine blades are arranged at 90 degrees on the outer edge of the turbine (5).