A hydraulic sandblasting perforating spray gun

Abstract

The utility model belongs to the technical field of hydraulic sandblasting perforation, and discloses a hydraulic sandblasting perforation spray gun, including an injector, wherein a first injection hole and a second injection hole are arranged on the injector, wherein the diameter of the first injection hole is smaller than the diameter of the second injection hole, the first injection hole and the second injection hole are located at two ends of the injector, and four mounting grooves are arranged on the outer side of the injector, wherein the mounting grooves are all fixedly connected with fixing rods. The utility model sets the first injection hole and the second injection hole, and before inserting the injector into the well, the corresponding injection hole is selected according to the needs of the oil well, and the unused injection hole is blocked, and the injector does not need to be replaced. Compared with replacing the injector, the adjustment process is simpler and faster to operate, and saves time.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic sandblasting perforation, in particular to a hydraulic sandblasting perforation spray gun. Background Art

[0002] Hydraulic sandblasting perforation is an operation that uses sand-containing high-pressure liquid to spray casing and form holes. The perforating gun is lowered to a predetermined depth, and the casing and cement ring of the target layer are opened by perforating bullets to form a connecting channel from the formation to the wellbore to facilitate oil and gas production. The principle is that high-speed, high-pressure liquid containing quartz sand forms a high-speed jet when passing through the nozzle, impacting the casing, cement ring and formation, and continuously cutting to form holes.

[0003] The injection holes on the injectors on the perforating gun have various specifications, each with a different diameter. When the perforating gun is in use, multiple injectors are installed on the perforating gun for use. When injection holes of different diameters are needed, the staff needs to remove the injectors from the perforating gun one by one and replace and install injectors of corresponding specifications, which is cumbersome and troublesome. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to provide a hydraulic sandblasting perforating spray gun.

[0005] To achieve the above-mentioned purpose, the utility model proposes a hydraulic sandblasting perforating spray gun, including an injector, wherein a first injection hole and a second injection hole are provided on the injector, the diameter of the first injection hole is smaller than the diameter of the second injection hole, the first injection hole and the second injection hole are located at both ends of the injector, and four mounting grooves are provided on the outer side of the injector, and fixing rods are fixedly connected in the mounting grooves, and a sliding ring is slidably connected on the fixing rod, and a plurality of placement grooves are provided on the inner wall of the sliding ring, and the positions of the placement grooves correspond to the positions of the first injection hole and the second injection hole, and a plugging component is provided in the placement grooves.

[0006] In one example, the sealing assembly includes a threaded rod, which passes through a sliding ring and is threadedly connected to the sliding ring. One end of the threaded rod is fixedly connected to a limit block, and the other end of the threaded rod is fixedly connected to a conical plug. The center line of the conical plug is on the same horizontal plane as the horizontal center line of the sliding ring.

[0007] In one example, both sides of the conical plug are circular, the diameter of the circular surface on one side of the conical plug is smaller than the diameter of the first injection hole, and the diameter of the circular surface on the other side of the conical plug is larger than the diameter of the second injection hole.

[0008] In one example, the side walls of the first spray hole and the second spray hole are both fixedly connected to a metal pipe, and the metal pipe is used to buffer the wear of the injector caused by sandblasting.

[0009] In one example, the sliding ring is provided with eight threaded through holes, and every two threaded through holes are aligned with a fixed rod. Two threaded holes are provided at both ends of the surface of the fixed rod. The distance between the two threaded holes at one end of the fixed rod is the same as the distance between the threaded through holes. All the threaded through holes are threadedly connected to fastening bolts, and the fastening bolts cooperate with the threaded holes.

[0010] In one example, the limiting block and one end of the fastening bolt are both provided with a hexagonal slot.

[0011] The hydraulic sandblasting perforating spray gun proposed by the utility model can bring the following beneficial effects:

[0012] First, by setting the first injection hole and the second injection hole, before inserting the injector into the well, the corresponding injection hole is selected according to the needs of the oil well. It is only necessary to move the sliding ring to the vicinity of the unused injection hole, block the unused injection hole through the blocking component, and make the sandblasting pass through the injection hole at the other end. There is no need to replace the injector, which is more convenient to use. At the same time, the adjustment process is simpler and faster than replacing the injector, saving time.

[0013] Secondly, by setting a conical plug, the conical plug is aligned with the injection hole, and then the threaded rod is rotated, the threaded rod pushes the conical plug into the injection hole to block the injection hole. The conical plug is inserted into the injection hole to seal it, thereby reducing the gap and preventing leakage. One end of the conical plug is smaller than the first injection hole, and the other end is larger than the second injection hole, so that the conical plug can seal the first injection hole and the second injection hole. The conical plug is more flexible to use and has a wide range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0015] In the attached picture:

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 A schematic diagram of the cross-sectional structure of the ejector.

[0018] Figure 3 It is a schematic diagram of the structure of the plugging component.

[0019] Figure 4 It is a schematic diagram of parts of the utility model.

[0020] In the figure: 1. injector; 2. first injection hole; 3. second injection hole; 4. fixing rod; 5. sliding ring; 6. sealing assembly; 61. threaded rod; 62. limit block; 63. tapered plug; 7. metal pipe; 8. fastening bolt; 9. hexagonal slot; 10. threaded hole. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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] In the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description of reference terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more schemes or examples.

[0026] like Figure 1 to Figure 4 As shown, an embodiment of the utility model proposes a hydraulic sandblasting perforating spray gun, including an injector 1, a first injection hole 2 and a second injection hole 3 are provided on the injector 1, the diameter of the first injection hole 2 is smaller than the diameter of the second injection hole 3, the first injection hole 2 and the second injection hole 3 are located at both ends of the injector 1, four installation grooves are provided on the outer side of the injector 1, and the installation grooves are fixedly connected to the fixing rod 4, the fixing rod 4 is slidably connected to the sliding ring 5, and the inner wall of the sliding ring 5 is provided with a plurality of placement grooves, and the positions of the placement grooves correspond to the positions of the first injection hole 2 and the second injection hole 3. A plugging component 6 is provided inside. Two sets of injection holes are provided on the injector 1, namely the first injection hole 2 and the second injection hole 3. The two sets of injection holes are different in size. Before inserting the injector 1 into the well, the corresponding injection hole is selected according to the needs of the oil well. It is only necessary to move the sliding ring 5 to the vicinity of the unused injection hole, and block the unused injection hole through the plugging component 6, so that the sandblasting can pass through the injection hole at the other end. There is no need to replace the injector 1, which is more convenient to use. At the same time, the adjustment process is simpler and faster than replacing the injector 1, which saves time.

[0027] Specifically, the sealing assembly 6 includes a threaded rod 61, which passes through the sliding ring 5 and is threadedly connected to the sliding ring 5. One end of the threaded rod 61 is fixedly connected to the limit block 62, and the other end of the threaded rod 61 is fixedly connected to the conical plug 63. The center line of the conical plug 63 is on the same horizontal plane as the horizontal center line of the sliding ring 5. When sealing, the sliding ring 5 is moved to the injection hole that is not needed to align the conical plug 63 with the injection hole. Then, the threaded rod 61 is rotated, and the threaded rod 61 pushes the conical plug 63 into the injection hole to block the injection hole. The injection hole is sealed by inserting the conical plug 63 into the injection hole to reduce the gap and avoid leakage.

[0028] Specifically, both sides of the conical plug 63 are circular, the diameter of the circular surface on one side of the conical plug 63 is smaller than the diameter of the first injection hole 2, and the diameter of the circular surface on the other side of the conical plug 63 is larger than the diameter of the second injection hole 3. One end of the conical plug 63 is smaller than the first injection hole 2, and the other end is larger than the second injection hole 3, so that the conical plug 63 can block the first injection hole 2 and the second injection hole 3. The conical plug 63 is more flexible to use and has a wide range of adaptability.

[0029] Specifically, the side walls of the first injection hole 2 and the second injection hole 3 are fixedly connected to the metal tube 7, and the metal tube 7 is used to buffer the wear of the injector 1 caused by sandblasting. When the water in the injector 1 is sprayed out along with the sand, it contacts the metal tube 7 and wears the metal tube 7 first, thereby protecting the injector 1 and reducing the wear of the injector 1.

[0030] Specifically, eight threaded through holes are provided on the sliding ring 5, and every two threaded through holes are aligned with a fixed rod 4. Two threaded holes 10 are provided at both ends of the surface of the fixed rod 4. The distance between the two threaded holes 10 at one end of the fixed rod 4 is the same as the distance between the threaded through holes. The inner threads of all the threaded through holes are connected to the fastening bolts 8, and the fastening bolts 8 are matched with the threaded holes 10. The center of the first injection hole 2 and the second injection hole 3 are on the same horizontal plane as the midline between the two threaded holes 10 at both ends of the fixed rod 4. When the sliding ring 5 is moved along the fixed rod After the sliding ring 5 is moved to the unused injection hole, the threaded through hole on the sliding ring 5 is aligned with the threaded hole 10 at one end of the fixing rod 4, and the fastening bolt 8 is rotated to fix the sliding ring 5. When the fastening bolt 8 enters the threaded hole 10, the conical plug 63 is aligned with the unused injection hole. At this time, the threaded rod 61 is rotated to block the injection hole through the conical plug 63. By setting a plurality of fastening bolts 8 to fix the sliding ring 5, the sliding ring 5 can resist a large impact force, and the blocking of the injection hole by the conical plug 63 is more stable.

[0031] Specifically, one end of the limit block 62 and the fastening bolt 8 are both provided with a hexagonal slot 9, and the limit block 62 is the same as the hexagonal slot 9 on the fastening bolt 8. For the fastening bolt 8 and the threaded rod 61, only a hexagonal wrench is needed to control them, which makes the operation easier.

[0032] Working principle: Before inserting the injector 1 into the well, select the corresponding injection hole according to the needs of the oil well. Just move the sliding ring 5 to the vicinity of the unused injection hole, align the threaded through hole on the sliding ring 5 with the threaded hole 10 at one end of the fixing rod 4, and turn the fastening bolt 8 to fix the sliding ring 5. When the fastening bolt 8 enters the threaded hole 10, the conical plug 63 is aligned with the unused injection hole. At this time, turn the threaded rod 61 to block the injection hole through the conical plug 63.

[0033] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0034] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A hydraulic sandblasting perforating gun, characterized in that: The invention comprises an injector (1), wherein a first injection hole (2) and a second injection hole (3) are provided on the injector (1), wherein the diameter of the first injection hole (2) is smaller than the diameter of the second injection hole (3), wherein the first injection hole (2) and the second injection hole (3) are located at two ends of the injector (1), wherein four mounting grooves are provided on the outer side of the injector (1), wherein a fixing rod (4) is fixedly connected in each of the mounting grooves, wherein a sliding ring (5) is slidably connected on the fixing rod (4), wherein a plurality of placement grooves are provided on the inner wall of the sliding ring (5), wherein the positions of the placement grooves correspond to the positions of the first injection hole (2) and the second injection hole (3), and wherein a blocking component (6) is provided in each of the placement grooves.

2. A hydraulic sandblasting perforating spray gun according to claim 1, characterized in that: The plugging assembly (6) comprises a threaded rod (61), the threaded rod (61) passes through the sliding ring (5) and is threadedly connected to the sliding ring (5), one end of the threaded rod (61) is fixedly connected to a limit block (62), and the other end of the threaded rod (61) is fixedly connected to a conical plug (63), and the center line of the conical plug (63) is on the same horizontal plane as the horizontal center line of the sliding ring (5).

3. A hydraulic sandblasting perforating spray gun according to claim 2, characterized in that: Both sides of the conical plug (63) are circular, the diameter of the circular surface on one side of the conical plug (63) is smaller than the diameter of the first injection hole (2), and the diameter of the circular surface on the other side of the conical plug (63) is larger than the diameter of the second injection hole (3).

4. A hydraulic sandblasting perforating spray gun according to claim 1, characterized in that: The side walls of the first spray hole (2) and the second spray hole (3) are both fixedly connected to a metal tube (7), and the metal tube (7) is used to buffer the wear of the injector (1) caused by sandblasting.

5. A hydraulic sandblasting perforating gun according to claim 1, characterized in that: The sliding ring (5) is provided with eight threaded through holes, and every two threaded through holes are aligned with a fixing rod (4). Two threaded holes (10) are provided at both ends of the surface of the fixing rod (4). The distance between the two threaded holes (10) at one end of the fixing rod (4) is the same as the distance between the threaded through holes. The inner threads of all the threaded through holes are connected to fastening bolts (8), and the fastening bolts (8) match the threaded holes (10).

6. A hydraulic sandblasting perforating gun according to claim 2, characterized in that: The limiting block (62) and one end of the fastening bolt (8) are both provided with a hexagonal slot (9).

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