Petroleum exploitation screen pipe

Abstract

The utility model discloses an oil exploitation screen pipe which comprises an outer screen pipe, first screen holes are formed in the outer side of the outer screen pipe, a pulley is arranged on one side of the outer screen pipe, limiting rings are arranged at the two ends of the outer screen pipe, a connecting frame is arranged in the outer screen pipe, a transmission shaft is arranged on one side of the connecting frame, and a transmission shaft is arranged on the other side of the connecting frame. A cleaning scraping plate is arranged on the outer side of the outer screen pipe, supporting frames are arranged at the two ends of the cleaning scraping plate, a connecting groove is formed in one side of each supporting frame, a sliding groove is formed in the inner side of each connecting groove, the outer screen pipe is connected with the connecting grooves in a sleeved mode, the sliding wheels are connected with the sliding grooves in a sleeved mode, and a threaded scraping plate is arranged on the inner wall of the outer screen pipe. An inner screen pipe is arranged in the outer screen pipe, and second screen holes are formed in the outer side of the inner screen pipe. According to the utility model, multi-stage efficient filtering work is carried out through the outer screen pipe and the inner screen pipe, and cleaning work is carried out through the cleaning scraping plate and the threaded scraping plate, so that not only is a multi-stage filtering effect achieved, but also the characteristic of anti-blocking cleaning is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production, in particular to an oil production screen pipe. Background Art

[0002] In oil drilling operations, screen pipes are an important sand control equipment. In practice, the appropriate screen pipe steel grade and type can be selected according to the different geological environments (different lithologies) of the oil wells. Different screen pipes have different effects.

[0003] The existing device is a special screen pipe for oil extraction (application number CN202122319442.0). This special screen pipe for oil extraction can quickly replace and clean the screen pipe body, effectively improve the service life and working efficiency of the screen pipe body, and has a simple and reasonable structure, novel design, and high practical value. However, it can only perform a simple layer of filtration on the petroleum raw materials, and the filtration effect is poor, and multi-stage high-efficiency filtration cannot be performed. Moreover, a large amount of impurities will accumulate on the surface of the screen pipe after long-term operation. If these attached impurities are not cleaned in time, it is easy to cause the screen pipe to be blocked, which will affect the subsequent sand filtering effect. For this reason, the present application proposes an oil extraction screen pipe to solve this problem.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] The utility model aims to provide a petroleum production screen pipe to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides an oil production screen pipe, including an outer screen pipe, the outer side of the outer screen pipe includes a first sieve hole, a pulley is provided on one side of the outer screen pipe, limiting rings are provided at both ends of the outer screen pipe, a connecting frame is provided inside the outer screen pipe, a transmission shaft is provided on one side of the connecting frame, a cleaning scraper is provided on the outer side of the outer screen pipe, support frames are provided at both ends of the cleaning scraper, a connecting groove is provided on one side of the support frame, a slide groove is provided on the inner side of the connecting groove, the outer screen pipe is sleeved with the connecting groove, the pulley is sleeved with the slide groove, a threaded scraper is provided on the inner wall of the outer screen pipe, an inner screen pipe is provided inside the outer screen pipe, and the outer side of the inner screen pipe includes a second sieve hole.

[0007] Preferably, the connecting frame is welded to the outer sieve tube, the transmission shaft is threadedly connected to the connecting frame, the transmission shaft is connected to an external transmission mechanism, and the limiting ring is welded to the outer sieve tube.

[0008] Preferably, the pulley is connected to the outer sieve tube bearing, the pulley is movably connected to the support frame, and the outer sieve tube is movably connected to the support frame.

[0009] Preferably, the support frame is fixedly connected to the cleaning scraper bolts, and the cleaning scraper is fitted with the outer screen tube.

[0010] Preferably, the inner screen pipe is sleeved with the outer screen pipe, the threaded scraper is welded to the outer screen pipe, and the threaded scraper is fitted to the inner screen pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model is a screen pipe for oil production, which is provided with an outer screen pipe and an inner screen pipe. The first screen hole on the outer screen pipe blocks impurities with larger particles, and the second screen hole on the inner screen pipe blocks impurities with smaller particles. Finally, the oil enters the oil extraction pipeline through the inner screen pipe, achieving the effect of multi-stage screening and filtration for oil production.

[0013] 2. The utility model is an oil production screen pipe, which is provided with a transmission shaft, a connecting frame, a pulley, a cleaning scraper and a threaded scraper. The transmission shaft is driven to rotate by an external transmission mechanism, the transmission shaft drives the connecting frame to rotate, the connecting frame drives the outer screen pipe to rotate along the supporting frame, and the pulley moves along the slide groove. Due to the rotation of the outer screen pipe itself, the cleaning scraper can clean up the impurities attached to the outside of the outer screen pipe, and at the same time drive the threaded scraper to move along the outer wall of the inner screen pipe, so as to clean up the impurities attached to the outside of the inner screen pipe, which has the effect of facilitating cleaning and preventing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a structural schematic diagram of an oil production screen pipe according to an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of an outer screen pipe and an inner screen pipe in an oil production screen pipe according to an embodiment of the utility model;

[0017] Figure 3 The utility model is a schematic diagram of the internal structure of a cleaning scraper in an oil production screen pipe according to an embodiment of the utility model.

[0018] Reference numerals:

[0019] 1. Outer sieve tube; 101. First sieve hole; 102. Pulley; 103. Limiting ring; 104. Connecting frame; 105. Transmission shaft; 2. Cleaning scraper; 201. Support frame; 202. Connecting groove; 203. Slide groove; 3. Inner sieve tube; 301. Second sieve hole; 302. Threaded scraper. DETAILED DESCRIPTION

[0020] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0021] See also Figure 1-3 According to an embodiment of the utility model, an oil production screen pipe comprises an outer screen pipe 1, the outer side of the outer screen pipe 1 comprises a first screen hole 101, a pulley 102 is provided on one side of the outer screen pipe 1, and limiting rings 103 are provided at both ends of the outer screen pipe 1, a connecting frame 104 is provided inside the outer screen pipe 1, and a transmission shaft 105 is provided on one side of the connecting frame 104, a cleaning scraper 2 is provided on the outer side of the outer screen pipe 1, and support frames 201 are provided at both ends of the cleaning scraper 2, and a connecting groove 202 is provided on one side of the support frame 201, and the connecting groove 2 02 is provided with a slide groove 203 on the inner side, the outer screen tube 1 is sleeved with the connecting groove 202, the pulley 102 is sleeved with the slide groove 203, the inner wall of the outer screen tube 1 is provided with a threaded scraper 302, the inner part of the outer screen tube 1 is provided with an inner screen tube 3, and the outer side of the inner screen tube 3 includes a second sieve hole 301. The utility model performs multi-stage high-efficiency filtration through the outer screen tube 1 and the inner screen tube 3, and performs cleaning through the cleaning scraper 2 and the threaded scraper 302. It not only has the effect of multi-stage filtration, but also has the characteristics of anti-clogging cleaning.

[0022] According to the above scheme of the utility model, the connecting frame 104 is welded to the outer screen tube 1, the transmission shaft 105 is threadedly connected to the connecting frame 104, the transmission shaft 105 is connected to the external transmission mechanism, the limiting ring 103 is welded to the outer screen tube 1, which is convenient for driving the outer screen tube 1 to rotate, the pulley 102 is connected to the outer screen tube 1 bearing, the pulley 102 is movably connected to the support frame 201, the outer screen tube 1 is movably connected to the support frame 201, and the setting of the pulley 102 is convenient for limiting work, the support frame 201 is bolted and connected, the cleaning scraper 2 is fitted with the outer screen tube 1, and the setting of the cleaning scraper 2 is used to clean the blocked impurities on the outer wall of the outer screen tube 1 to prevent the outer screen tube 1 from being blocked, the inner screen tube 3 is sleeved with the outer screen tube 1, the threaded scraper 302 is welded to the outer screen tube 1, the threaded scraper 302 is fitted with the inner screen tube 3, and the setting of the threaded scraper 302 can clean the impurities on the outer wall of the inner screen tube 3 to prevent the inner screen tube 3 from being blocked.

[0023] During specific use, larger impurities are blocked by the first sieve holes 101 on the outer sieve tube 1, and smaller impurities are blocked by the second sieve holes 301 on the inner sieve tube 3. Finally, the oil enters the oil extraction pipeline through the inner sieve tube 3, thereby achieving the effect of multi-stage filtration and oil extraction. After long-term operation, a large amount of impurities will accumulate on the surfaces of the outer sieve tube 1 and the inner sieve tube 3. At this time, the transmission shaft 105 is driven to rotate by the external transmission mechanism, and the transmission shaft 105 drives the connecting frame 104 to rotate. The connecting frame 104 drives the outer sieve tube 1 to rotate along the support frame 201, so that the pulley 102 moves along the slide groove 203. Due to the rotation of the outer sieve tube 1 itself, the cleaning scraper 2 can clean up the impurities attached to the outside of the outer sieve tube 1, and at the same time drive the threaded scraper 302 to move along the outer wall of the inner sieve tube 3, so as to clean up the impurities attached to the outside of the inner sieve tube 3, thereby achieving the effect of easy cleaning and anti-blocking.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screen pipe for oil production, comprising an outer screen pipe (1), characterized in that: The outer side of the outer sieve tube (1) comprises a first sieve hole (101); a pulley (102) is provided on one side of the outer sieve tube (1); limiting rings (103) are provided at both ends of the outer sieve tube (1); a connecting frame (104) is provided inside the outer sieve tube (1); a transmission shaft (105) is provided on one side of the connecting frame (104); a cleaning scraper (2) is provided on the outer side of the outer sieve tube (1); and support frames (201) are provided at both ends of the cleaning scraper (2). ), a connecting groove (202) is provided on one side of the support frame (201), a sliding groove (203) is provided on the inner side of the connecting groove (202), the outer screen tube (1) is sleeved with the connecting groove (202), the pulley (102) is sleeved with the sliding groove (203), a threaded scraper (302) is provided on the inner wall of the outer screen tube (1), an inner screen tube (3) is provided inside the outer screen tube (1), and the outer side of the inner screen tube (3) includes a second screen hole (301).

2. The oil production screen pipe according to claim 1, characterized in that: The connecting frame (104) is welded to the outer sieve tube (1), the transmission shaft (105) is threadedly connected to the connecting frame (104), the transmission shaft (105) is connected to an external transmission mechanism, and the limiting ring (103) is welded to the outer sieve tube (1).

3. The oil production screen pipe according to claim 2, characterized in that: The pulley (102) is connected to the bearing of the outer sieve tube (1), the pulley (102) is movably connected to the support frame (201), and the outer sieve tube (1) is movably connected to the support frame (201).

4. The oil production screen pipe according to claim 3, characterized in that: The support frame (201) is fixedly connected to the cleaning scraper (2) by bolts, and the cleaning scraper (2) is in close contact with the outer screen tube (1).

5. The oil production screen pipe according to claim 4, characterized in that: The inner sieve tube (3) is sleeved with the outer sieve tube (1), the threaded scraper (302) is welded with the outer sieve tube (1), and the threaded scraper (302) is fitted with the inner sieve tube (3).

Images