CN219691503U - Direct-connection compact fracturing wellhead device - Google Patents
Direct-connection compact fracturing wellhead device Download PDFInfo
- Publication number
- CN219691503U CN219691503U CN202321043285.8U CN202321043285U CN219691503U CN 219691503 U CN219691503 U CN 219691503U CN 202321043285 U CN202321043285 U CN 202321043285U CN 219691503 U CN219691503 U CN 219691503U
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- way body
- oil pipe
- flange
- fixedly connected
- fracturing
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 210000002445 nipple Anatomy 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 42
- 239000012530 fluid Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a direct-connection compact fracturing wellhead device, which comprises: the oil pipe comprises a four-way body, an oil pipe double male nipple, a conversion flange and three ball valves; the upper end of the four-way body is fixedly connected with the conversion flange, the lower end of the four-way body is fixedly connected with the sleeve flange, and the left end interface and the right end interface are respectively and fixedly connected with a ball valve; the upper end of the oil pipe double male pup joint is fixedly connected with the lower port of the conversion flange, and the lower end of the oil pipe double male pup joint extends into the vertical channel of the four-way body; the upper port of the conversion flange is fixedly connected with a third ball valve. The oil pipe double male pup joint is connected with the conversion flange, an oil pipe hanger is not needed, the structure of a wellhead device is greatly simplified, the quick installation is convenient, the weight is reduced, and the cost is saved. Meanwhile, the size of the wellhead device is reduced, and the structure is more compact.
Description
Technical Field
The utility model belongs to the technical field of oil extraction wellhead devices, and particularly relates to a direct-connection compact fracturing wellhead device.
Background
When the crude oil extracted from the stratum by the oil extraction machine every day is less than a specified value, the underground crude oil is insufficient in exudation capacity, and a certain amount of fracturing fluid must be injected from a central wellhead (generally 200-500 radius) in time by utilizing hydraulic action. Oilfield fracturing is a method for forming a crack in an oil layer by utilizing the hydraulic action, and is also called as oil layer hydraulic fracturing. The oil layer fracturing process is to squeeze high pressure, large displacement and viscous liquid into oil layer with fracturing truck, to press out oil layer into many cracks, to fill the cracks with propping agent, to raise the permeability of oil layer and to increase water injection rate or oil yield. The common fracturing fluids include basic types such as water-based fracturing fluids, oil-based fracturing fluids, emulsion fracturing fluids, foam fracturing fluids, and acid-based fracturing fluids.
Fracturing is an important link in the engineering sequence of exploration and development of middle and low permeability oil fields. Due to the limitation of physical property conditions of middle and low permeability oil field reservoirs, pollution of drilling fluid in the drilling process and other reasons, natural productivity after oil well perforation is low, exploitation benefits are poor, and normal production can be put into practice only by fracturing. Fracturing reformation is an important means for scientific development of medium and low permeability oil and gas fields. According to the characteristics of oil reservoirs and the development needs of oil fields, the fracturing process technology is continuously innovated, and the fracturing technologies such as layering fracturing, multi-fracture fracturing, selective fracturing, balanced fracturing, long-packing-element thick oil layer fracturing, flow-limiting fracturing, end sand-removing fracturing, horizontal well fracturing, casing damage well fracturing and slim hole fracturing are developed. And the single well fracturing yield increase is developed into the whole block of the oil field to carry out fracturing yield increase and injection increase.
In the prior art, fracturing fluid enters the underground through the tubing head of the wellhead, and the tubing head of the existing wellhead is complex in structure, large in weight, complex in installation and high in cost, and is not suitable for being used in a direct-connection well.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a direct-connection compact fracturing wellhead device. The technical problems to be solved by the utility model are realized by the following technical scheme:
a direct connect compact fracturing wellhead device, comprising: the oil pipe comprises a four-way body, an oil pipe double male nipple, a conversion flange and three ball valves;
the upper end of the four-way body is fixedly connected with the conversion flange, the lower end of the four-way body is fixedly connected with the sleeve flange, and the left end interface and the right end interface are respectively and fixedly connected with a ball valve;
the upper end of the oil pipe double male pup joint is fixedly connected with the lower port of the conversion flange, and the lower end of the oil pipe double male pup joint extends into the vertical channel of the four-way body;
the upper port of the conversion flange is fixedly connected with a third ball valve.
In one embodiment of the utility model, an annular protrusion extending along the circumferential direction is arranged on the outer wall of the oil pipe double male nipple;
the annular protrusion is in clearance fit with the vertical channel of the four-way body.
In one embodiment of the utility model, the ball valve is connected with the four-way body and the conversion flange through a ball valve nipple.
In one embodiment of the utility model, a first sealing gasket ring is arranged between the conversion flange and the upper end of the four-way body;
and a second sealing backing ring is arranged between the lower end of the four-way body and the sleeve flange.
In one embodiment of the utility model, four lifting bolts are fixedly arranged on the outer wall of the conversion flange.
The utility model has the beneficial effects that:
the oil pipe double male pup joint is connected with the conversion flange, an oil pipe hanger and a plurality of groups of pressing jackscrews are not needed, the structure of a wellhead device is greatly simplified, the quick installation is convenient, the weight is reduced, and the cost is saved. Meanwhile, the size of the wellhead device is reduced, and the structure is more compact.
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram 1 of a direct-connection compact fracturing wellhead device according to an embodiment of the present utility model.
Reference numerals illustrate:
10-a four-way body; 20-an oil pipe double male nipple; 21-an annular protrusion; 30-a conversion flange; 31-lifting bolts; 40-ball valve; 41-ball valve nipple; 50-a sleeve flange; 60-stud bolts; 70-a first gasket ring; 80-a second gasket ring.
Detailed Description
The present utility model will be described in further detail with reference to specific examples, but embodiments of the present utility model are not limited thereto.
As shown in fig. 1, a direct-connect compact fracturing wellhead device, comprising: the oil pipe comprises a four-way body 10, an oil pipe double male nipple 20, a conversion flange 30 and three ball valves 40;
the upper end of the four-way body 10 is fixedly connected with the conversion flange 30, the lower end of the four-way body 10 is fixedly connected with the sleeve flange 50, and the left end interface and the right end interface of the four-way body 10 are respectively and fixedly connected with a ball valve 40.
The upper end of the oil pipe double male nipple 20 is fixedly connected with the lower port of the conversion flange 30, and the lower end of the oil pipe double male nipple 20 extends into the vertical channel of the four-way body 10; the upper port of the transfer flange 30 is fixedly connected to a third ball valve 40.
In this embodiment, the oil pipe double male nipple 20 is in threaded connection with the conversion flange 30, the oil pipe double male nipple 20 is connected with the conversion flange 30, an oil pipe hanger is not required to be used, components related to the oil pipe hanger such as multiple groups of jackscrews and complex sealing components are not required to be used, the structure of the wellhead device is greatly simplified, and the cost is greatly saved. Meanwhile, the wellhead device of the embodiment is simple in structure and light in weight, so that the wellhead device is very convenient to install, the installation can be completed quickly, the installation efficiency is improved, and the operation efficiency of a direct-connection well is further improved. In addition, since the diameter of the double male nipple 20 is smaller than that of the tubing hanger, the diameter of the wellhead without the tubing hanger is smaller than that of the wellhead with the tubing hanger, and the structure is more compact.
When the fracturing fluid is required to be injected, the ball valves 40 on the left side and the right side are opened, the fracturing fluid injection device is connected with the ball valves 40 of the conversion flange 30, the annular packer connected in series on the oil pipe can reliably seal the annular space between the oil pipe and the sleeve under the action of pressure, the sealing reliability of the annular space can be observed through the ball valves 40 on the left side and the right side, when the fracturing is finished and the fracturing fluid is not required to be used, the fracturing fluid is fed into a fracturing well-sealing process procedure, the ball valves 40 are closed, the conversion flange 30 is fixedly connected with the four-way body 10 through a plurality of stud bolts 60 and matched nuts, the upper port and the lower port of the conversion flange 30 are communicated and coaxial, and the sleeve flange 50 is fixedly connected with the four-way body 10 through a plurality of stud bolts 60 and matched nuts.
Further, an annular protrusion 21 extending along the circumferential direction is arranged on the outer wall of the oil pipe double male nipple 20; the annular protrusion 21 is in clearance fit with the vertical channel of the four-way body 10. In the installation process, after the oil pipe double male nipple 20 is in threaded connection with the conversion flange 30, the oil pipe is in threaded connection with the oil pipe double male nipple 20, at this time, the conversion flange 30 and the oil pipe double male nipple 20 are located above the four-way body 10, the conversion flange 30 is lifted at the upper end of the four-way body 10, in the lifting process of the conversion flange 30, the oil pipe double male nipple 20 is placed into a vertical channel of the four-way body 10, at this time, the annular protrusion 21 is in clearance fit with the vertical channel, so that coaxiality of the oil pipe, the four-way body 10 and a sleeve is guaranteed, and reliable coaxiality of the conversion flange 30, the sleeve flange 50, two ends of the four-way body 10, the first sealing gasket ring 70 and the second sealing gasket ring 80 is further guaranteed.
Preferably, the ball valve 40 is connected to the four-way body 10 and the transfer flange 30 by a ball nipple 41. Two ball valves 40 on the left and right sides of the four-way body 10 are fixedly connected with the four-way body 10 through ball valve pup joints 41, specifically, one end of each ball valve pup joint 41 is in threaded connection with the four-way body 10, and the other end of each ball valve pup joint 41 is in threaded connection with each ball valve 40. One end of the ball valve nipple 41 is in threaded connection with the conversion flange 30, and the other end is in threaded connection with the ball valve 40.
Further, a first gasket ring 70 is arranged between the conversion flange 30 and the upper end of the four-way body 10; a second gasket ring 80 is provided between the lower end of the four-way body 10 and the sleeve flange 50.
Further, four lifting bolts 31 are fixedly provided on the outer wall of the conversion flange 30.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in 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 orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (5)
1. A direct connect compact fracturing wellhead assembly comprising: the oil pipe comprises a four-way body (10), an oil pipe double male nipple (20), a conversion flange (30) and three ball valves (40);
the four-way valve comprises a four-way body (10), wherein the upper end of the four-way body is fixedly connected with a conversion flange (30), the lower end of the four-way body is fixedly connected with a sleeve flange (50), and a left end interface and a right end interface are respectively fixedly connected with a ball valve (40);
the upper end of the oil pipe double male pup joint (20) is fixedly connected with the lower port of the conversion flange (30), and the lower end of the oil pipe double male pup joint extends into a vertical channel of the four-way body (10);
the upper port of the conversion flange (30) is fixedly connected with a third ball valve (40).
2. A direct-connect compact fracturing wellhead according to claim 1, characterized in that the outer wall of the tubing double male nipple (20) is provided with an annular projection (21) extending in circumferential direction;
the annular bulge (21) is in clearance fit with the vertical channel of the four-way body (10).
3. A direct connect compact frac wellhead according to claim 1, wherein the ball valve (40) is connected to the four-way body (10) and the transition flange (30) by ball valve nipple (41).
4. A direct connect compact frac wellhead according to claim 1, wherein a first gasket ring (70) is provided between the transition flange (30) and the upper end of the four-way body (10);
a second sealing gasket ring (80) is arranged between the lower end of the four-way body (10) and the sleeve flange (50).
5. A direct-connect compact fracturing wellhead according to claim 1, characterised in that four lifting bolts (31) are fixedly arranged on the outer wall of the conversion flange (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043285.8U CN219691503U (en) | 2023-05-04 | 2023-05-04 | Direct-connection compact fracturing wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043285.8U CN219691503U (en) | 2023-05-04 | 2023-05-04 | Direct-connection compact fracturing wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219691503U true CN219691503U (en) | 2023-09-15 |
Family
ID=87937585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321043285.8U Active CN219691503U (en) | 2023-05-04 | 2023-05-04 | Direct-connection compact fracturing wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219691503U (en) |
-
2023
- 2023-05-04 CN CN202321043285.8U patent/CN219691503U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |