CN116856869A - Novel dabber formula sleeve pipe hanger - Google Patents
Novel dabber formula sleeve pipe hanger Download PDFInfo
- Publication number
- CN116856869A CN116856869A CN202310919492.3A CN202310919492A CN116856869A CN 116856869 A CN116856869 A CN 116856869A CN 202310919492 A CN202310919492 A CN 202310919492A CN 116856869 A CN116856869 A CN 116856869A
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- China
- Prior art keywords
- adapter
- casing
- head
- casing head
- mandrel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
- E21B19/06—Elevators, i.e. rod- or tube-gripping devices
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
本发明公开了一种新型芯轴式套管悬挂器，包括：密封体和转接件；密封体，位于套管头内与套管头密封连接，上端位于套管头上端的下方，沿轴向方向开设有连接通孔；转接件，一端穿入套管头中与连接通孔的上部可拆卸连接，另一端位于套管头外且与油管头密封连接；转接件与密封体的材料不相同且转接件承受内压的最小承压值大于或等于87Mpa。本发明通过的芯轴式套管悬挂器采用分体式，包括密封体和转接件两部分，转接件作为套管头外的“延长颈”部分，可以采用承压能力更强的材料，然后再与密封体进行组装形成芯轴式套管悬挂器，由此，转接件能够承受最小87Mpa的压力，提升了转接件的承压能力，同时，提升了芯轴式套管悬挂器的可靠性，延长了使用寿命。
The invention discloses a new type of mandrel-type casing hanger, which includes: a sealing body and an adapter; the sealing body is located in the casing head and is sealingly connected to the casing head, and the upper end is located below the upper end of the casing head. There is a connecting through hole in the direction; the adapter has one end that penetrates into the casing head and is detachably connected to the upper part of the connecting through hole, and the other end is located outside the casing head and is sealingly connected to the tubing head; the adapter and the sealing body The materials are different and the minimum pressure-bearing value of the adapter to withstand the internal pressure is greater than or equal to 87Mpa. The mandrel-type casing hanger adopted by the present invention adopts a split type and includes two parts: a sealing body and an adapter. The adapter serves as the "extended neck" part outside the casing head and can be made of materials with stronger pressure-bearing capacity. Then it is assembled with the sealing body to form a mandrel-type casing hanger. As a result, the adapter can withstand a minimum pressure of 87Mpa, which improves the pressure-bearing capacity of the adapter. At the same time, it improves the performance of the mandrel-type casing hanger. reliability and extended service life.
Description
Technical Field
The invention belongs to the technical field of mandrel type hangers, and particularly relates to a novel mandrel type sleeve hanger.
Background
Casing head is used for fixed connection well head casing string for support the gravity of top layer sleeve pipe, technical sleeve pipe and reservoir sleeve pipe, sealed each layer of inter-layer annular space, for installation preventer, tubing head, the production tree provides transitional connection, and through two side mouths on the casing head body, can carry out construction operations such as makeup and extrusion mud, control and filling balancing liquid. Casing hangers are provided on the casing head and function to suspend casing strings in the well, and commonly used casing hangers are divided into slip and mandrel types.
The mandrel type casing hanger is of an integrated structure and is usually made of a stainless steel alloy (12 Cr 13) material, and as the mechanical property of the stainless steel alloy material (12 Cr 13) is generally 75K, namely, the minimum yield strength of the stainless steel alloy material in deformation is about 0.2 percent and is 517 MPa=75000 psi, the bearing capacity of the extension neck part at the upper end of the mandrel type casing hanger is limited, so that the extension neck part is easy to damage in the operation process of a 103.5MPa casing head fracturing procedure.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a novel mandrel type casing hanger. The technical problems to be solved by the invention are realized by the following technical scheme:
a novel mandrel casing hanger comprising: a sealing body and an adapter;
the sealing body is positioned in the casing head and is in sealing connection with the casing head, the upper end of the sealing body is positioned below the upper end of the casing head, and a connecting through hole is formed in the axial direction;
one end of the adapter penetrates into the casing head to be detachably connected with the upper part of the connecting through hole, and the other end of the adapter is positioned outside the casing head and is in sealing connection with the oil pipe head;
the material of the adapter is different from that of the sealing body, and the minimum bearing value of the adapter bearing the internal pressure is more than or equal to 87Mpa.
In one embodiment of the invention, the adapter comprises: switching short circuit;
one end of the switching short circuit penetrates into the casing head to be in threaded connection with the upper part of the connecting through hole, and the other end of the switching short circuit is positioned outside the casing head;
and the part of the adapter connector, which is positioned outside the casing head, is in sealing connection with the tubing head.
In one embodiment of the invention, one end of the switching short circuit is provided with a connecting external thread, and the other end is provided with a connecting internal thread;
the connecting external thread is connected with the upper part of the connecting through hole through threads;
the connecting internal thread is used for being in threaded connection with a drill rod when the novel mandrel type casing hanger is installed.
In one embodiment of the invention, the adapter comprises: double male shorts and couplings;
one end of the double male short circuit penetrates into the casing head to be in threaded connection with the upper part of the connecting through hole, and the other end of the double male short circuit is positioned outside the casing head and in threaded connection with one end of the coupling;
the part of the double male connectors, which is positioned outside the casing head, is connected with the oil pipe head in a sealing way;
the other end of the coupling is used for being in threaded connection with a drill rod when the novel mandrel type casing hanger is installed.
In one embodiment of the present invention, both ends of the connection through-hole have internal threads.
The invention has the beneficial effects that:
the mandrel type casing hanger adopts split type and comprises a sealing body and an adapter, the adapter is used as an extension neck part outside a casing head, a material with stronger bearing capacity can be adopted, and then the adapter is assembled with the sealing body to form the mandrel type casing hanger, so that the adapter can bear the internal pressure of 87Mpa minimum, the bearing capacity of the adapter is improved, meanwhile, the reliability of the mandrel type casing hanger is improved, and the service life is prolonged.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of an installation structure of a novel mandrel type casing hanger provided in an embodiment of the present invention;
FIG. 2 is a schematic illustration of the installation structure of another novel mandrel type casing hanger provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a switching short circuit according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a seal provided in an embodiment of the present invention;
fig. 5 is a schematic view of an installation structure of a further novel mandrel type casing hanger according to an embodiment of the present invention.
Reference numerals illustrate:
10-sealing body; 11-connecting through holes; 12-clamping springs for shafts; 13-pressing ring; 14-trapezoid outer metal sealing rings; 15-trapezoid inner metal sealing rings; a 16-O-shaped sealing ring; 20-an adapter; 30-casing head; 40-switching short circuit; 41-connecting external threads; 42-connecting internal threads; 50-double-common short circuit; 51-coupling.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but embodiments of the present invention are not limited thereto.
Example 1
As shown in fig. 1, a novel mandrel-type casing hanger comprises: a sealing body 10 and an adapter 20. The sealing body 10 and the adapter 20 are detachably connected. The sealing body 10 is positioned in the casing head 30 and is in sealing connection with the casing head 30, the upper end of the sealing body 10 is positioned below the upper end of the casing head 30, and the sealing body 10 is provided with a connecting through hole 11 along the axial direction.
One end of the adapter 20 penetrates into the casing head 30 to be detachably connected with the upper part of the connecting through hole 11, and the other end of the adapter 20 is positioned outside the casing head 30 and is in sealing connection with the oil pipe head; the material of the adapter 20 is different from that of the sealing body 10, and the adapter 20 can bear the internal pressure of the minimum 87Mpa, so that the requirement that the pressure value of the 103.5Mpa casing head fracturing process is rated pressure multiplied by 0.8 is met. The adaptor is not the same material as the seal and the minimum mechanical properties of the adaptor material are 110K, i.e. 0.2% residual deformation minimum yield strength 758.4 mpa=110000 psi.
In this embodiment, the mandrel type casing hanger includes two parts of the split sealing body 10 and the adaptor 20, the adaptor 20 is used as an extension neck part outside the casing head 30, and can be processed by adopting a material with stronger bearing capacity, and then is assembled with the sealing body 10 to form the mandrel type casing hanger, so that the adaptor 20 can bear the pressure of 87Mpa of the minimum internal pressure, the requirement that the pressure value of the casing head fracturing process of 103.5Mpa is rated pressure multiplied by 0.8 is met, the bearing capacity of the adaptor 20 is improved, meanwhile, the reliability of the mandrel type casing hanger is improved, and the service life is prolonged.
The sealing body 10 is made of a material of stainless steel 12Cr13 with mechanical property of 75K which is conventionally used for a mandrel type casing hanger, and the adaptor 20 is made of a material (80K or 95K or 110K or 125K) with the same or higher grade as the casing material.
Example two
As shown in fig. 2 and 3, on the basis of the first embodiment, the present embodiment further defines that the adaptor 20 includes: and a transit shorting 40. One end of the switching short circuit 40 penetrates into the casing head 30 to be in threaded connection with the upper portion of the connecting through hole 11, and the other end of the switching short circuit 40 is located outside the casing head 30. The portion of the adaptor nipple 40 located outside the casing head 30 is in sealing connection with the tubing head.
Further, one end of the transit short 40 has a connecting external thread 41, and the other end of the transit short 40 has a connecting internal thread 42. The two ends of the connecting through hole 11 are provided with internal threads, and the connecting external threads 41 are in threaded connection with the internal threads at the upper part of the connecting through hole 11; the internal connection threads 42 are used to threadedly connect to the drill pipe when the new mandrel hanger is installed. In use, one end of the connecting external thread 41 is the lower end, and one end of the connecting internal thread 42 is the upper end. In this embodiment, the switching short circuit 40 is of an integral structure, and the structure is simple.
When the adaptor nipple 40 is screwed with the internal thread at the upper part of the connecting through hole 11 of the sealing body 10, it is necessary to apply a screw thread sealing grease of GB/T23512-2015 (API RP 5 A3) to form a seal.
Further, the sealing body 10 is in sealing connection with the casing head 30 through a clamping spring 12 for a shaft, a pressing ring 13, a trapezoid outer metal sealing ring 14, a trapezoid inner metal sealing ring 15 and two O-shaped sealing rings 16. The clamping spring 12 for the shaft is sleeved on the outer wall of the sealing body 10 near the upper end, the pressing ring 13 is sleeved on the outer wall of the sealing body 10, the pressing ring 13 is positioned below the clamping spring 12 for the shaft, the upper end of the pressing ring 13 abuts against the clamping spring 12 for the shaft, the lower end of the pressing ring 13 abuts against the upper end of the trapezoid outer metal sealing ring 14, the longitudinal section of the trapezoid outer metal sealing ring 14 is in an inverted trapezoid shape, the trapezoid inner metal sealing ring 15 is sleeved on the outer wall of the sealing body, the longitudinal section of the trapezoid inner metal sealing ring 15 is in a trapezoid shape, and the trapezoid outer metal sealing ring 14 is sleeved outside the trapezoid inner metal sealing ring 15. Two O-rings 16 are sleeved on the outer wall of the sealing body 10 and are positioned below the trapezoid inner metal sealing ring 15.
Example III
As shown in fig. 3, 4 and 5, on the basis of the first embodiment, the present embodiment further defines that the adaptor 20 includes: double pin 50 and coupling 51, double pin 50 and coupling 51 are detachably connected.
The two ends of the connecting through hole 11 are provided with internal threads, one end of the double-male short circuit 50 penetrates into the casing head 30 to be in threaded connection with the internal threads on the upper part of the connecting through hole 11, and the other end of the double-male short circuit 50 is positioned outside the casing head 30 and in threaded connection with one end of the coupling 51. The other end of collar 51 is adapted to be threadedly connected to the drill pipe when the new mandrel hanger is installed. The portion of the double male connector 50 that is located outside of the casing head 30 is sealingly connected to the tubing head. In use, one end of the double male connector 50 is the lower end and the portion of the collar 51 is the upper end. The double pin 50 and collar 51 are both machined from the same or higher grade of casing material and are each capable of withstanding internal pressures of a minimum of 87Mpa.
In this embodiment, the adaptor 20 is further a split double male connector 50 and coupling 51, which is convenient for maintenance and replacement, and improves the reliability of connection. In addition, as the double male connector 50 and the coupling 51 are finished products, the double male connector 50 and the coupling 51 which are made of materials meeting the pressure-bearing conditions can be selected, customized processing is not needed, and the cost is saved.
When the double male connector 50 is in threaded connection with the internal thread at the upper part of the connecting through hole 11 of the sealing body 10, and when the double male connector 50 is in threaded connection with the coupling 51, GB/T23512-2015 (API RP 5A 3) thread sealing grease is required to be coated to form a seal.
Further, the sealing body 10 is in sealing connection with the casing head 30 through a clamping spring 12 for a shaft, a pressing ring 13, a trapezoid outer metal sealing ring 14, a trapezoid inner metal sealing ring 15 and two O-shaped sealing rings 16. The clamping spring 12 for the shaft is sleeved on the outer wall of the sealing body 10 near the upper end, the pressing ring 13 is sleeved on the outer wall of the sealing body 10, the pressing ring 13 is positioned below the clamping spring 12 for the shaft, the upper end of the pressing ring 13 abuts against the clamping spring 12 for the shaft, the lower end of the pressing ring 13 abuts against the upper end of the trapezoid outer metal sealing ring 14, the longitudinal section of the trapezoid outer metal sealing ring 14 is in an inverted trapezoid shape, the trapezoid inner metal sealing ring 15 is sleeved on the outer wall of the sealing body, the longitudinal section of the trapezoid inner metal sealing ring 15 is in a trapezoid shape, and the trapezoid outer metal sealing ring 14 is sleeved outside the trapezoid inner metal sealing ring 15. Two O-rings 16 are sleeved on the outer wall of the sealing body 10 and are positioned below the trapezoid inner metal sealing ring 15.
In the description of the present invention, 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 invention 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 invention.
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 invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, 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 invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, 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 invention. 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 invention in connection with the preferred embodiments, and it is not intended that the invention 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 invention, and these should be considered to be within the scope of the invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310919492.3A CN116856869A (en) | 2023-07-25 | 2023-07-25 | Novel dabber formula sleeve pipe hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310919492.3A CN116856869A (en) | 2023-07-25 | 2023-07-25 | Novel dabber formula sleeve pipe hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116856869A true CN116856869A (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310919492.3A Pending CN116856869A (en) | 2023-07-25 | 2023-07-25 | Novel dabber formula sleeve pipe hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116856869A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275423A (en) * | 2014-06-15 | 2016-01-27 | 江苏宏泰石化机械有限公司 | Single-stage casing head with field-replaceable hanger |
| US20180148989A1 (en) * | 2016-11-29 | 2018-05-31 | Jerry D. Ross | Tubing Hanger Assembly With Wellbore Access, and Method of Accessing a Wellbore |
| CN109577872A (en) * | 2018-11-29 | 2019-04-05 | 美钻深海能源科技研发（上海）有限公司 | Double male joint and the oil pipe clean method for using the double male joint |
| CN214498931U (en) * | 2020-11-27 | 2021-10-26 | 中海油能源发展股份有限公司 | Directional connecting nipple for air-tight oil pipe hanger |
| CN214944144U (en) * | 2021-05-12 | 2021-11-30 | 盐城金龙达机械制造有限公司 | Small casing head |
| CN114293943A (en) * | 2021-12-23 | 2022-04-08 | 陕西延长石油金石钻采设备有限公司 | Pressure-bearing sealing device for pumping well |
| CN218759800U (en) * | 2022-09-28 | 2023-03-28 | 陕西延长石油金石钻采设备有限公司 | Universal mandrel type hanger sealing device |
| CN220378239U (en) * | 2023-07-25 | 2024-01-23 | 陕西延长石油金石钻采设备有限公司 | Split mandrel type casing hanger |
-
2023
- 2023-07-25 CN CN202310919492.3A patent/CN116856869A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275423A (en) * | 2014-06-15 | 2016-01-27 | 江苏宏泰石化机械有限公司 | Single-stage casing head with field-replaceable hanger |
| US20180148989A1 (en) * | 2016-11-29 | 2018-05-31 | Jerry D. Ross | Tubing Hanger Assembly With Wellbore Access, and Method of Accessing a Wellbore |
| CN109577872A (en) * | 2018-11-29 | 2019-04-05 | 美钻深海能源科技研发（上海）有限公司 | Double male joint and the oil pipe clean method for using the double male joint |
| CN214498931U (en) * | 2020-11-27 | 2021-10-26 | 中海油能源发展股份有限公司 | Directional connecting nipple for air-tight oil pipe hanger |
| CN214944144U (en) * | 2021-05-12 | 2021-11-30 | 盐城金龙达机械制造有限公司 | Small casing head |
| CN114293943A (en) * | 2021-12-23 | 2022-04-08 | 陕西延长石油金石钻采设备有限公司 | Pressure-bearing sealing device for pumping well |
| CN218759800U (en) * | 2022-09-28 | 2023-03-28 | 陕西延长石油金石钻采设备有限公司 | Universal mandrel type hanger sealing device |
| CN220378239U (en) * | 2023-07-25 | 2024-01-23 | 陕西延长石油金石钻采设备有限公司 | Split mandrel type casing hanger |
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