CN219587545U

CN219587545U - Nozzle sleeve for high-pressure oil-gas well

Info

Publication number: CN219587545U
Application number: CN202321257991.2U
Authority: CN
Inventors: 刘守朝; 孙同成; 梁洪云; 张江江; 唐志; 张志刚
Original assignee: China Petroleum and Chemical Corp; Sinopec Northwest Oil Field Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Northwest Oil Field Co
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-08-25
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a choke sleeve for a high-pressure oil-gas well, which comprises a body, wherein the body is provided with a choke sleeve channel, one section of the upper end of the choke sleeve channel is a choke accommodating channel, a contraction channel is arranged below the choke accommodating channel, an inner supporting step is formed at the joint of the choke accommodating channel and the choke accommodating channel, an expansion channel is arranged above the choke accommodating channel, a plurality of first internal threads are arranged on the inner side wall of the expansion channel, the choke sleeve also comprises a cylindrical clamping piece, a plurality of first external threads are arranged on the outer side wall of the clamping piece, a through hole penetrating through the upper surface and the lower surface of the clamping piece is formed in the center position of the clamping piece, the inner diameter of the through hole is smaller than the inner diameter of the choke accommodating channel and larger than the aperture of the choke, one section of the body along the length direction of the choke sleeve is a cylinder section, and a plurality of second external threads are arranged on the outer side wall of the cylinder section and are used for matching with the second internal threads in a fixed throttle of an oil-gas-collecting tree. The oil nozzle sleeve can firmly fix the oil nozzle in the oil nozzle sleeve no matter the oil gas flows forward or backward pass through the oil nozzle.

Description

Nozzle sleeve for high-pressure oil-gas well

Technical Field

The utility model relates to the technical field of choke sleeves, in particular to a choke sleeve for a high-pressure oil-gas well.

Background

In the oil and gas exploitation process, the production tree is an important well control device, and the inside of a fixed throttle is used for installing a choke sleeve, and the inside of the choke sleeve can be provided with choke nozzles with different specifications according to the required pressure. In the current state of the north-order oil and gas field, three specifications of 70Mpa, 105Mpa and 140Mpa are commonly adopted for oil and gas tree production, the pressure of an end valve group is 7.0Mpa in a part of the north-order oil and gas field, the back pressure of a single well is higher than 7.0Mpa, and when operations such as wing inversion, oil nozzle inspection and the like are carried out, one operation is needed to ensure the stability and safety of the operation: firstly, the non-production wings of the production tree are pressurized through the riser valve, after the pressurizing is finished, the gate valve on the outer side of the production tree is opened to conduct the oil flow, but one existing risk is that when the oil flow flows forward (namely, from the production wing to the riser through the oil nozzle), the oil nozzle is located at the step of the oil nozzle sleeve, and no safety risk exists, but when the oil flow is pressurized before the operations of inverting the wing, checking the oil nozzle and the like, the back pressure is higher than 7.0Mpa, the oil flow flows reversely (namely, from the riser to the oil nozzle to the production wing), the oil nozzle is fixed by only one clamping spring with the thickness of 2mm, the clamping spring is extremely easy to damage along with the production of an oil well, once the damage is likely to fly out of the oil nozzle sleeve to collide with a fixed throttle strongly in the pressurizing process, and the severe collision between metals is likely to generate sparks to cause fires, explosion and other malignant accidents, so that the safety hidden hazards of wellhead safety production are buried.

It is therefore an urgent need for those skilled in the art to provide a nozzle tip cover that avoids the above-mentioned drawbacks.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the oil nozzle sleeve for the high-pressure oil-gas well, so that the oil nozzle can be firmly fixed in the oil nozzle sleeve no matter the oil-gas flow passes through the oil nozzle in the forward direction or the reverse direction, no unexpected falling occurs, normal production is ensured, and potential safety hazards are eliminated.

The provided technical proposal is as follows:

the utility model provides a high pressure is glib cover for gas well, includes the body that has the length, and this body is offered along its length direction and is run through the glib cover passageway at its upper and lower both ends, and this glib cover passageway is used for the oil air current to pass through, the one section that the glib cover passageway is close to the upper end of this body is for personally submitting circular shape glib accommodation passageway, and this glib accommodation passageway's length matches in the high of glib that holds and its internal diameter sets up to interference fit in the glib that holds, glib accommodation passageway below sets up an internal diameter and its axis phase coincidence in the shrink passageway of glib accommodation passageway axis for both handing-over department forms an internal support step, glib accommodation passageway top sets up an internal diameter and its axis phase coincidence in the expansion passageway of glib accommodation passageway axis, and the inside wall of this expansion passageway sets up a plurality of first internal screw threads along circumference direction, still including the joint piece that is the cylinder form, the lateral wall of this joint piece sets up a plurality of first external screw threads that match in this a plurality of first internal screw threads, the bore diameter of joint piece is located at the centre position of the second external screw thread section is equipped with the cylinder in the inside diameter of this cylinder of the inside diameter section of this cylindrical body, and the bore diameter of this cylinder is set up in the bore diameter of the second section is equipped with the cylinder of the bore diameter of this cylinder section.

Preferably, the body comprises a first cylinder, a second cylinder, a third cylinder and a fourth cylinder which are sequentially connected from top to bottom, the diameters of the four cylinders are sequentially reduced from top to bottom, the expansion channel is positioned at the upper position in the first cylinder, the oil nozzle accommodating channel is sequentially positioned at the lower position in the first cylinder, the whole second cylinder and the upper position in the third cylinder from top to bottom, the contraction channel is positioned at the lower position in the third cylinder and the whole fourth cylinder, and the third cylinder forms the cylinder section provided with a plurality of second external threads.

Preferably, the outer side wall of the first cylinder is provided with three first circumferential grooves which are sequentially arranged from top to bottom, and sealing rings are embedded in the three first circumferential grooves.

Preferably, a second circumferential groove is formed in the outer side wall of the second cylinder, and the second circumferential groove is used for embedding a sealing ring.

Preferably, the upper surface of the first cylinder protrudes upwards to provide a fastening head for being combined with a wrench.

The provided device has the technical effects that:

when the oil nozzle sleeve is used, the oil nozzle is arranged in the oil nozzle accommodating channel, and then the clamping piece is arranged in the expanding channel, so that the clamping piece is combined to the oil nozzle sleeve in a threaded connection mode; and then the choke sleeve is arranged on the fixed choke of the production tree in a threaded mode. The oil nozzle sleeve can enable the oil and gas flow to pass through the oil nozzle in the forward direction or the reverse direction, so that the oil nozzle can be firmly fixed in the oil nozzle sleeve, accidental falling does not occur, normal production is ensured, and potential safety hazards are eliminated.

Drawings

FIG. 1 is a schematic view, partly in section, of one embodiment of a nozzle cover for a high pressure oil and gas well provided by the utility model;

fig. 2 is a schematic illustration of the clip in full section.

The reference numerals in fig. 1-2 are as follows:

the novel oil nozzle comprises a body 1, an oil nozzle accommodating channel 2, a shrinkage channel 3, a support step 4, an expansion channel 5, a clamping piece 6, a through hole 7, a first cylinder 8, a second cylinder 9, a third cylinder 10, a fourth cylinder 11, a first circumferential groove 12, a second circumferential groove 13 and a fastening head 14.

Detailed Description

The present utility model will be described in further detail below.

The present utility model will be described in more detail below with reference to the attached drawings, in which preferred embodiments of the present utility model are shown, it being understood that one skilled in the art can modify the present utility model described herein while still achieving the beneficial effects of the present utility model. Accordingly, the following description is to be construed as broadly known to those skilled in the art and not as limiting the utility model.

In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the utility model in unnecessary detail. It will be appreciated that in the development of any such actual embodiment, numerous implementation details must be made in order to achieve the developer's specific goals.

In order to make the objects and features of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. It should be noted that the drawings are in a very simplified form and all employ non-precise ratios, and are merely convenient and clear to aid in the description of the embodiments of the utility model.

1-2, FIG. 1 is a schematic partial cross-sectional view of an embodiment of a nozzle cover for a high-pressure oil and gas well provided by the utility model; fig. 2 is a schematic illustration of the clip in full section.

The utility model provides a nozzle holder for a high-pressure oil-gas well, as shown in fig. 1-2, the nozzle holder comprises a body 1 with a length, the body 1 is provided with a nozzle holder channel penetrating through the upper end and the lower end of the body along the length direction, the nozzle holder channel is used for oil gas flow to pass through, one section of the nozzle holder channel adjacent to the upper end of the body 1 is a nozzle holder channel 2 with a circular cross section, the length of the nozzle holder channel 2 is matched with the height of the accommodated nozzle and the inner diameter of the nozzle holder channel is set to be in interference fit with the accommodated nozzle, a shrinkage channel 3 with an inner diameter smaller than the inner diameter of the nozzle holder channel 2 and the axis of the nozzle holder channel is arranged below the nozzle holder channel 2, an inner supporting step 4 is formed at the joint of the nozzle holder channel, an inner diameter larger than the inner diameter of the nozzle holder channel 2 and the axis of the nozzle holder channel is arranged at an enlarged channel 5 with the axis of the nozzle holder channel 2, a plurality of first inner threads are arranged on the inner side walls of the cylindrical clamping piece 6 in the circumferential direction, a plurality of outer diameter 7 are arranged at the outer diameter of the cylindrical piece 6 and the inner diameter of the cylindrical piece is arranged at the center of the cylindrical piece and the cylindrical piece is matched with the inner diameter 7 at the inner diameter of the cylindrical section of the cylindrical piece, and the inner diameter of the cylindrical piece is arranged at the outer diameter of the cylindrical piece is matched with the inner diameter 7 of the cylindrical piece is arranged at the inner diameter of the cylindrical piece and the cylindrical piece is matched with the inner diameter of the cylindrical piece is provided with the cylindrical piece with the cylindrical section with the cylindrical piece with the cylindrical diameter 7.

When the oil nozzle sleeve is used, the oil nozzle is arranged in the oil nozzle accommodating channel 2, then the clamping piece 6 is arranged in the expanding channel 5, and the clamping piece 6 is combined to the oil nozzle sleeve in a threaded connection mode; and then the choke sleeve is arranged on the fixed choke of the production tree in a threaded mode. The oil nozzle sleeve can enable the oil and gas flow to pass through the oil nozzle in the forward direction or the reverse direction, so that the oil nozzle can be firmly fixed in the oil nozzle sleeve, accidental falling does not occur, normal production is ensured, and potential safety hazards are eliminated.

In a specific embodiment, as shown in fig. 1, the body 1 includes a first cylinder 8, a second cylinder 9, a third cylinder 10 and a fourth cylinder 11 sequentially connected from top to bottom, diameters of the four cylinders are sequentially reduced from top to bottom, the expansion channel 5 is located at an upper position in the first cylinder 8, the nozzle holder channel 2 is sequentially located at a lower position in the first cylinder 8, an entire second cylinder 9 and an upper position in the third cylinder 10 from top to bottom, the contraction channel 3 is located at a lower position in the third cylinder 10 and an entire fourth cylinder 11, and the third cylinder 10 forms the cylinder section provided with the plurality of second external threads.

Further, the outer side wall of the first cylinder 8 is provided with three first circumferential grooves 12 which are sequentially arranged from top to bottom, and the three first circumferential grooves 12 are used for embedding sealing rings.

And, a second circumferential groove 13 is formed on the outer side wall of the second cylinder 9, and the second circumferential groove 13 is used for embedding a sealing ring.

In one embodiment, the upper surface of the first cylinder 8 is provided with a fastening head 14 protruding upwards for engagement with a wrench.

The foregoing has outlined and described the basic principles, features, and advantages of the present utility model in order that the description that follows is merely an example of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, but rather that the foregoing embodiments and description illustrate only the principles of the utility model, and that the utility model is susceptible to various equivalent changes and modifications without departing from the spirit and scope of the utility model, all of which are intended to be within the scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a high pressure is glib cover for oil and gas well, its characterized in that, including the body that has the length, this body is offered along its length direction and is run through the glib cover passageway at its upper and lower both ends, this glib cover passageway is used for the oil and gas flow to pass through, the one section that the upper end of this body was close to the glib cover passageway is personally submitted circular shape for transversal, and this glib cover passageway's length matches in the high of glib that holds and its internal diameter set up to interference fit in the glib that holds, glib cover passageway below sets up an internal diameter and its axis phase-locking in the shrink passageway of glib cover passageway axis for both handing-over department forms an inner support step, glib cover passageway top sets up an internal diameter and is greater than glib cover passageway internal diameter and its axis phase-locking in the expansion passageway of glib cover passageway, and the inside wall of this expansion passageway sets up a plurality of first internal threads along the circumference direction, still includes the joint piece that is the cylinder form, and the outside wall of this joint piece sets up the first external thread piece that matches this a plurality of first internal threads of this, the inside diameter of the first external thread piece of this joint piece is located in the bore diameter of the cylinder of this cylindrical body is offered in the bore diameter of the second thread section of this internal diameter phase-locking device, the bore diameter of this cylindrical section is set up in the bore diameter of this cylinder is located the cylindrical section of this cylindrical body.

2. The nozzle tip cover for a high-pressure oil-gas well according to claim 1, wherein the body comprises a first cylinder, a second cylinder, a third cylinder and a fourth cylinder which are sequentially connected from top to bottom, the diameters of the four cylinders are sequentially reduced from top to bottom, the expansion channel is located at an upper position in the first cylinder, the nozzle tip accommodating channel is sequentially located at a lower position in the first cylinder, in the whole second cylinder and at an upper position in the third cylinder from top to bottom, the contraction channel is located at a lower position in the third cylinder and in the whole fourth cylinder, and the third cylinder forms the cylinder section provided with the plurality of second external threads.

3. The nozzle tip cover for a high-pressure oil-gas well according to claim 2, wherein the outer side wall of the first cylinder is provided with three first circumferential grooves which are sequentially arranged from top to bottom, and sealing rings are embedded in the three first circumferential grooves.

4. The nozzle tip cover for a high-pressure oil and gas well according to claim 2, wherein a second circumferential groove is formed in the outer side wall of the second cylinder, and the second circumferential groove is used for embedding a sealing ring.

5. The nozzle cover for a high-pressure oil and gas well according to claim 2, wherein the upper surface of the first cylinder is provided with a fastening head protruding upwards for being combined with a wrench.