Steam thermal washing paraffin removal device for oil well shaft

Abstract

The utility model relates to the technical field of oil wells, in particular to a steam thermal washing paraffin removal device for an oil well shaft. The steam thermal washing paraffin removal device for the oil well shaft comprises a hollow disc and an outer sleeve cleaning disc, the hollow disc and the outer sleeve cleaning disc are distributed inside and outside and coaxially arranged, an annular telescopic air bag is installed between the hollow disc and the outer sleeve cleaning disc, and a one-way air inlet valve is installed on the annular telescopic air bag; a cleaning belt is fixedly adhered to the outer ring wall of the outer sleeve cleaning disc; and a plurality of auxiliary cleaning components which are annularly distributed are mounted on the upper disc surface of the outer sleeve cleaning disc. According to the steam thermal washing paraffin removal device for the oil well shaft, the spiral elastic plastic belt is combined with the spiral rubber edges, a spiral washing path is formed during rotation, the double functions of thermal washing and mechanical washing are achieved in cooperation with steam injection of the spiral steam flow channel and the steam exhaust hole, and the paraffin removal efficiency is improved. And particularly, the cleaning effect on spiral wax dirt is better.

Description

Technical Field

[0001] The utility model relates to the technical field of oil wells, in particular to a steam hot washing and wax removal device for an oil wellbore. Background Art

[0002] An oil well is a hole drilled by drilling methods. Generally, after the oil well reaches the oil layer, the oil layer casing is lowered and oil well cement is injected into the annular space between the casing and the well wall to protect the well wall and seal the oil, gas and water layers. Then, according to the requirements of oil field development, the oil layer is opened with a perforating gun to form a channel, and the oil pipe is lowered. Using appropriate flow induction methods, the oil is raised from the bottom of the oil well to the wellhead. During the use of oil wells, the oil wellbore needs to be steam-heat cleaned, but the existing technical solutions are not stable enough in rotation during use and the cleaning effect is not sufficient. To solve this problem, in the patent document with publication number CN215565860U, through the overall structure of the equipment, steam gas is ejected through each nozzle, so that the ejected steam evenly and fully impacts the inner wall of the oil wellbore, and the rotating cleaning disc drives the brush layer to rotate, so that the brush layer brushes the inner wall of the oil wellbore, making the equipment more fully cleaned. However, during the cleaning process, only a single cleaning disc is used to drive the brush layer for brushing, and the coverage is limited. In addition, the cleaning disc is prone to vibration due to the rigid connection of the structure during rotation, resulting in poor operating stability, which easily affects the service life of the cleaning disc.

[0003] In order to solve the above problems, it is necessary to improve the cleaning disk based on the structure of publication number CN215565860U to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a steam hot washing and wax removal device for an oil wellbore.

[0005] The utility model provides a steam hot washing and wax removal device for oil well bores, which comprises a hollow disc and an outer cleaning disc. The hollow disc and the outer cleaning disc are distributed inside and outside and are coaxially arranged. An annular telescopic airbag is installed between the hollow disc and the outer cleaning disc, and a one-way air inlet valve is installed on the annular telescopic airbag.

[0006] A cleaning tape is fixedly bonded to the outer ring wall of the outer cover cleaning disc;

[0007] The upper disk surface of the outer cover cleaning disk is equipped with a plurality of annularly distributed auxiliary cleaning components, and the auxiliary cleaning components include a spiral elastic plastic belt, and the outer belt surface of the spiral elastic plastic belt is fixedly embedded with spiral rubber ribs.

[0008] Preferably, the inner disk wall of the hollow disk is provided with a docking hole, steam is supplied to the hollow disk through the docking hole, and a plurality of annularly distributed elastic telescopic hoses are installed between the hollow disk and the outer cleaning disk.

[0009] Preferably, the auxiliary cleaning component also includes a fixed box, a feed pipe is fixedly installed on the bottom of the fixed box, and the feed pipe is inserted into the steam guide hole opened on the upper surface of the outer jacket cleaning plate and fixedly connected to the outer jacket cleaning plate, a curved steel pipe is fixedly installed on the fixed box, and the curved steel pipe is fixedly connected to the spiral elastic plastic belt and communicated with the spiral steam flow channel provided in the spiral elastic plastic belt, and the outer belt surface of the spiral elastic plastic belt is provided with a plurality of spirally arranged exhaust holes.

[0010] Preferably, a plurality of helical carbon steel springs are fixedly embedded in the helical elastic plastic band.

[0011] Preferably, a plurality of groups of annularly distributed connecting parts are set between the hollow disk and the outer cleaning disk, and the connecting parts include a sleeve, which is fixedly mounted on the hollow disk through a bracket, and a sliding rod with a sliding connection is inserted into the sleeve, and the other end of the sliding rod is fixedly mounted on the outer cleaning disk through a bracket.

[0012] Preferably, the inner surface of the annular telescopic airbag is fixedly connected to the outer wall of the hollow disk, and the outer surface of the annular telescopic airbag is fixedly connected to the inner wall of the outer cover cleaning disk.

[0013] Compared with the related art, the steam hot washing and wax removal device for oil well bore provided by the utility model has the following beneficial effects:

[0014] 1. The utility model has an annular telescopic airbag between the hollow disk and the outer cover cleaning disk, which significantly reduces the overall weight and facilitates transportation and underground installation. In addition, the sliding fit between the connecting sleeve and the sliding rod and the annular telescopic airbag can absorb the vibration energy during the rotation due to its elastic characteristics, thereby reducing rotational vibration and mechanical wear, ensuring smooth operation of the equipment.

[0015] 2. The auxiliary cleaning component of the utility model adopts a combination of spiral elastic plastic belt and spiral rubber ribs, which forms a spiral brushing path during rotation. Combined with the steam injection of the spiral steam flow channel and the exhaust hole, it realizes the dual effects of hot washing and mechanical brushing, especially for spiral wax scale with better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of the steam hot washing and wax removal device for an oil wellbore provided by the utility model;

[0017] Figure 2 for Figure 1A schematic structural diagram of the hollow disk shown;

[0018] Figure 3 for Figure 2 A schematic cross-sectional view of the hollow disk shown;

[0019] Figure 4 for Figure 1 The schematic structural diagram of the auxiliary cleaning component shown;

[0020] Figure 5 for Figure 4 An enlarged structural diagram of point A is shown;

[0021] Figure 6 for Figure 1 A schematic structural diagram of the cleaning belt shown;

[0022] Figure 7 for Figure 1 Schematic diagram of the structure of the connecting parts shown.

[0023] Numbers in the figure: 1. Hollow disk; 1a. Docking hole; 2. Jacket cleaning disk; 2a. Steam guide hole; 1-2. Elastic telescopic hose; 3. Annular telescopic airbag; 31. One-way air inlet valve; 4. Cleaning belt; 5. Auxiliary cleaning parts; 51. Spiral elastic plastic belt; 51a. Exhaust hole; 52. Spiral rubber rib; 53. Spiral carbon steel spring; 54. Fixing box; 541. Feed pipe; 542. Curved steel pipe; 6. Connector; 61. Sleeve; 62. Sliding rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] See also Figures 1 to 7, an embodiment of the utility model provides a steam hot washing and paraffin removal device for an oil well bore, the steam hot washing and paraffin removal device for an oil well bore comprising a hollow disk 1, an outer sleeve cleaning disk 2, an annular telescopic airbag 3 and an auxiliary cleaning component 5, the structure of the present application is replaced with the cleaning disk in the patent document with publication number CN215565860U, the hollow disk 1 is fixedly mounted on the pipe in the patent document with publication number CN215565860U, a docking hole 1a is provided on the inner disk wall of the hollow disk 1, and a connecting hole corresponding to the docking hole 1a is provided on the pipe in the patent document with publication number CN215565860U, so that part of the steam supplied by the pipe in the patent document with publication number CN215565860U can be discharged into the hollow disk 1, so that the docking hole 1a can supply steam to the hollow disk 1.

[0027] In the embodiments of the present invention, please refer to Figures 1 to 7 The hollow disk 1 and the outer jacket cleaning disk 2 are distributed inside and outside and are coaxially arranged. An annular telescopic airbag 3 is installed between the hollow disk 1 and the outer jacket cleaning disk 2, and a one-way air inlet valve 31 is installed on the annular telescopic airbag 3. The inner bag surface of the annular telescopic airbag 3 is fixedly connected to the outer ring wall of the hollow disk 1, and the outer bag surface of the annular telescopic airbag 3 is fixedly connected to the inner ring wall of the outer jacket cleaning disk 2. The outer ring wall of the outer jacket cleaning disk 2 is fixedly bonded with a cleaning belt 4.

[0028] It should be noted that when the pipe in the patent document with publication number CN215565860U rotates, the hollow disc 1 and the outer cleaning disc 2 rotate synchronously, so that the cleaning belt 4 on the outer cleaning disc 2 can scrub the inner wall of the oil wellbore;

[0029] Since an annular telescopic airbag 3 is provided between the hollow disk 1 and the outer cleaning disk 2, it replaces the rigid structure of the cleaning disk in the publication number CN215565860U, significantly reducing the overall weight and facilitating transportation and underground installation. Before work, an air pump or an air pump is used to connect with the one-way air inlet valve 31 to inflate the annular telescopic airbag 3, thereby enhancing the connection strength between the annular telescopic airbag 3 and the hollow disk 1 and the outer cleaning disk 2. In addition, the elastic characteristics of the annular telescopic airbag 3 can absorb the vibration energy during the rotation process and reduce mechanical wear.

[0030] In this embodiment, the cleaning belt 4 is a strip structure, which is attached to the outer wall of the outer shell cleaning disk 2 through an adhesive. When the annular telescopic airbag 3 needs to be exhausted, a steel needle is inserted into the one-way air inlet valve 31 to deflate the annular telescopic airbag 3.

[0031] Furthermore, a plurality of groups of annularly distributed connecting members 6 are set between the hollow disk 1 and the outer cleaning disk 2, and the connecting member 6 includes a sleeve 61, which is fixedly mounted on the hollow disk 1 through a bracket, and a sliding rod 62 with a sliding connection is inserted into the sleeve 61, and the other end of the sliding rod 62 is fixedly mounted on the outer cleaning disk 2 through a bracket. Since the connecting member 6 is provided between the hollow disk 1 and the outer cleaning disk 2, the stability of the connection between the hollow disk 1 and the outer cleaning disk 2 is improved, and the connecting member 6 (sliding fit between the sleeve 61 and the sliding rod 62) and the annular telescopic airbag 3 are used to reduce rotational vibration and ensure smooth operation of the equipment.

[0032] Among them, in order to avoid the problem of aging of the annular telescopic airbag 3 caused by long-term contact with high-temperature steam, the annular telescopic airbag 3 is made of high-temperature resistant silicone or fluororubber material, and a thermal insulation coating is added (the specific thermal insulation coating is selected and sprayed by technicians according to actual environmental requirements).

[0033] In the embodiments of the present invention, please refer to Figures 1 to 7 A plurality of annularly distributed elastic telescopic hoses 1-2 are installed between the hollow disk 1 and the outer cleaning disk 2, and a plurality of annularly distributed auxiliary cleaning components 5 are installed on the upper disk surface of the outer cleaning disk 2. The auxiliary cleaning components 5 include a spiral elastic plastic belt 51, and the outer belt surface of the spiral elastic plastic belt 51 is fixedly embedded with a spirally arranged spiral rubber rib 52;

[0034] The auxiliary cleaning component 5 also includes a fixed box 54, a feed pipe 541 is fixedly installed at the bottom of the fixed box 54, and the feed pipe 541 is inserted into the steam guide hole 2a opened on the upper surface of the outer jacket cleaning plate 2 and is fixedly connected to the outer jacket cleaning plate 2, a curved steel pipe 542 is fixedly installed on the fixed box 54, and the curved steel pipe 542 is fixedly connected to the spiral elastic plastic belt 51 and communicates with the spiral steam flow channel provided in the spiral elastic plastic belt 51, and a plurality of spirally arranged exhaust holes 51a are provided on the outer belt surface of the spiral elastic plastic belt 51.

[0035] It should be noted that when the hollow disc 1 and the outer cleaning disc 2 rotate, the spiral elastic plastic belt 51 rotates with the axis of the hollow disc 1 as the deflection axis, forming a spiral scrubbing path during rotation, which has a better cleaning effect on spiral wax scale, so the spiral rubber ridges 52 on the spiral elastic plastic belt 51 can perform secondary scrubbing on the inner wall of the oil wellbore, further improving the cleanliness of the spiral elastic plastic belt 51;

[0036] When the steam enters the hollow disk 1, it flows into the outer cleaning disk 2 through the elastic telescopic hose 1-2, and is diverted from the cleaning disk 2 to each spiral elastic plastic belt 51 through the feed pipe 541. At this time, the steam is sprayed out from the exhaust hole 51a opened on the outer belt surface of the spiral elastic plastic belt 51. The sprayed steam cooperates with the deflected spiral elastic plastic belt 51 to achieve the dual effects of hot washing and mechanical scrubbing, effectively improving the steam hot washing and wax removal effect on the inner wall of the oil wellbore.

[0037] Furthermore, a plurality of helical carbon steel springs 53 are fixedly embedded in the helical elastic plastic band 51 . The helical carbon steel springs 53 effectively avoid the hidden danger of torsional deformation of the helical elastic plastic band 51 during rotation.

[0038] In order to reduce the problem of clogging of the exhaust hole 51 a on the spiral elastic plastic belt, the exhaust hole 51 a adopts a tapered hole structure.

[0039] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A steam hot washing and wax removal device for an oil well bore, comprising a hollow disc (1) and an outer cleaning disc (2), characterized in that: The hollow disk (1) and the outer cleaning disk (2) are distributed inside and outside and are coaxially arranged. An annular telescopic airbag (3) is installed between the hollow disk (1) and the outer cleaning disk (2), and a one-way air inlet valve (31) is installed on the annular telescopic airbag (3); A cleaning belt (4) is fixedly bonded to the outer ring wall of the outer jacket cleaning disc (2); The upper disk surface of the outer cover cleaning disk (2) is equipped with a plurality of annularly distributed auxiliary cleaning components (5), and the auxiliary cleaning components (5) include a spiral elastic plastic belt (51), and the outer belt surface of the spiral elastic plastic belt (51) is fixedly engaged with a spirally arranged spiral rubber rib (52).

2. The steam hot washing and paraffin removal device for oil well bore according to claim 1, characterized in that: The inner wall of the hollow disk (1) is provided with a docking hole (1a), through which steam is supplied to the hollow disk (1), and a plurality of elastic telescopic hoses (1-2) distributed in an annular manner are installed between the hollow disk (1) and the outer cleaning disk (2).

3. The steam hot washing and paraffin removal device for oil well bore according to claim 2, characterized in that: The auxiliary cleaning component (5) also includes a fixed box (54), a feed pipe (541) is fixedly installed at the bottom of the fixed box (54), and the feed pipe (541) is inserted into the steam guide hole (2a) opened on the upper surface of the outer cleaning plate (2) and is fixedly connected to the outer cleaning plate (2), a curved steel pipe (542) is fixedly installed on the fixed box (54), and the curved steel pipe (542) is fixedly connected to the spiral elastic plastic belt (51) and communicated with the spiral steam flow channel provided in the spiral elastic plastic belt (51), and the outer belt surface of the spiral elastic plastic belt (51) is provided with a plurality of spirally arranged exhaust holes (51a).

4. The steam hot washing and paraffin removal device for oil well bore according to claim 3, characterized in that: A plurality of helical carbon steel springs (53) are fixedly embedded in the helical elastic plastic band (51).

5. The steam hot washing and paraffin removal device for oil well bore according to claim 1, characterized in that: A plurality of annularly distributed connecting members (6) are further arranged between the hollow disk (1) and the outer cleaning disk (2), and the connecting member (6) comprises a sleeve (61), the sleeve (61) being fixedly mounted on the hollow disk (1) via a bracket, and a sliding rod (62) for sliding connection is inserted into the sleeve (61), and the other end of the sliding rod (62) is fixedly mounted on the outer cleaning disk (2) via a bracket.

6. The steam hot washing and paraffin removal device for oil well bore according to claim 1, characterized in that: The inner surface of the annular telescopic airbag (3) is fixedly connected to the outer wall of the hollow disk (1), and the outer surface of the annular telescopic airbag (3) is fixedly connected to the inner wall of the outer cover cleaning disk (2).

Images