Downhole instrument built-in magnetic joint assembly capable of preventing fluid scrap iron
By using a magnetic joint assembly in the downhole instrument, the magnetic ring is used to absorb the iron filings in the fluid, the problem of iron filings affecting the measurement accuracy in the well logging in the oil field is solved, and the logging success rate and data accuracy are improved.
Patent Information
- Application Number
- CN202420632996.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In oilfield production logging, the accuracy of the underground layer output test and logging success rate are affected by iron filings in the oil-water-gas mixture liquid. The iron filings are easily attracted by the magnetic steel of the flow sensor, resulting in inaccurate measurement or stuck, and Affects the logging results.
Design a built-in magnetic joint assembly for downhole instruments, including flow channel pipe and magnetic joint assembly. The magnetic joint assembly consists of butt joints and magnetic rings, which are installed in the flow channel pipe. The magnetic ring absorbs iron filings in the fluid and reduces the entry of iron filings. The upper part of the runner tube to prevent the sensor from getting slower or stuck.
Through the arrangement of the magnetic joint assembly, the iron filings entering the flow pipe in the fluid are significantly reduced, improving the accuracy of the flow sensor and logging success rate.
Smart Images
Figure CN222162574U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of oilfield production logging, and specifically refers to a built-in magnetic joint component of a downhole instrument which is resistant to fluid and iron filings. Background Art
[0002] In production logging, the accuracy of production testing of each layer in the well and the success rate of logging are difficult problems. At present, the oil-water-gas mixed liquid in many production wells in oil fields generally contains a large amount of impurities, including many large and small iron filings, which are easily attracted by the magnets on the flow sensor, or reduce the speed of the flow sensor, making the flow measurement inaccurate, or jam the flow sensor rotation, causing logging failure. Utility Model Content
[0003] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and provide a downhole instrument built-in magnetic joint component that is resistant to fluid and iron filings, so as to improve the accuracy of downhole production data transmission and collection and the success rate of well logging.
[0004] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a downhole instrument built-in magnetic joint assembly for preventing fluid and iron filings, including a flow tube and a magnetic joint assembly, the magnetic joint assembly is installed in the flow tube, a flow sensor is arranged in the flow tube, the magnetic joint assembly is composed of a butt joint and a magnetic ring, when the logging instrument goes down to the liquid production layer, the oil, water and gas mixture is collected and enters the lower part of the flow tube, and then passes through the magnetic ring of the magnetic joint assembly, the magnetic ring absorbs the iron filings in the fluid, thereby greatly reducing the iron filings in the fluid entering the upper part of the flow tube.
[0005] As a preferred technical solution of the utility model, the magnetic joint assembly and the flow sensor are arranged in sequence along the fluid outflow direction of the flow channel pipe.
[0006] Compared with the prior art, the utility model adopts the above structure to achieve the following beneficial effects: through the setting of the magnetic joint assembly, the magnetic ring absorbs the iron filings in the fluid, which greatly reduces the iron filings entering the upper part of the flow channel pipe, reduces the flow sensor from slowing down or getting stuck, and thus improves the test accuracy and the success rate of well logging. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 This is a schematic diagram of the overall structure of a built-in magnetic joint assembly for a downhole instrument that is resistant to fluid and iron filings proposed by the utility model;
[0008] Figure 2 The utility model provides a structural schematic diagram of a magnetic joint group of a built-in magnetic joint assembly for a downhole instrument that is resistant to fluid and iron filings.
[0009] Among them, 1. flow channel tube, 2. magnetic joint assembly, 3. flow sensor, 4. butt joint, 5. magnetic ring. DETAILED DESCRIPTION
[0010] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0011] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.
[0012] like Figure 1-2 As shown, the utility model provides a built-in magnetic joint assembly for a downhole instrument that is resistant to fluid and iron filings, comprising a flow tube 1 and a magnetic joint assembly 2, wherein the magnetic joint assembly 2 is installed in the flow tube 1, wherein a flow sensor 3 is arranged in the flow tube 1, and the magnetic joint assembly 2 is composed of a butt joint 4 and a magnetic ring 5, wherein the magnetic joint assembly 2 and the flow sensor 3 are arranged in sequence along the fluid outflow direction of the flow tube 1, when the logging instrument goes down to the liquid production layer, the oil-water-gas mixture is collected and enters the lower part of the flow tube 1, and then passes through the magnetic ring 5 of the magnetic joint assembly 2, and the magnetic ring 5 absorbs the iron filings in the fluid, thereby greatly reducing the iron filings in the fluid entering the upper part of the flow tube 1.
[0013] During specific use, when the logging instrument is lowered to the liquid-producing layer, the oil-water-gas mixture is collected and enters the lower part of the flow channel tube 1, and then passes through the magnetic ring 5 of the magnetic joint assembly 2. The magnetic ring 5 absorbs iron filings in the fluid, so that the iron filings entering the upper part of the flow channel tube 1 are greatly reduced, thereby reducing the occurrence of slowdown or jamming of the flow sensor 3.
[0014] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A downhole instrument built-in magnetic joint assembly for preventing fluid and iron filings, characterized in that: The invention comprises a flow channel tube (1) and a magnetic joint assembly (2), wherein the magnetic joint assembly (2) is installed in the flow channel tube (1), a flow sensor (3) is arranged in the flow channel tube (1), and the magnetic joint assembly (2) is composed of a butt joint (4) and a magnetic ring (5).
2. The built-in magnetic joint assembly for downhole instruments against fluid and iron filings according to claim 1, characterized in that: The magnetic joint assembly (2) and the flow sensor (3) are arranged in sequence along the fluid outflow direction of the flow channel tube (1).