CN216446864U - Exempt from to demolish high-pressure construction connecting device in pit of well head production flow - Google Patents
Exempt from to demolish high-pressure construction connecting device in pit of well head production flow Download PDFInfo
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- CN216446864U CN216446864U CN202123100080.2U CN202123100080U CN216446864U CN 216446864 U CN216446864 U CN 216446864U CN 202123100080 U CN202123100080 U CN 202123100080U CN 216446864 U CN216446864 U CN 216446864U
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Abstract
The utility model discloses an underground high-pressure construction connecting device of a non-dismantling wellhead production flow, which is provided with a connecting hoop, a high-pressure construction pipe and a bearing sleeve, wherein one end of the high-pressure construction pipe is connected with the connecting hoop, and the other end of the high-pressure construction pipe penetrates through a hole of the bearing sleeve to be connected with a nozzle connecting hole of a nozzle sleeve in the wellhead production flow; the bearing sleeve is connected with a plug connecting hole of an oil outlet cavity of the oil nozzle sleeve in a wellhead production flow; the other end of the connecting hoop is connected with a high-pressure construction manifold; the high-pressure construction pipe is internally provided with a quick connector and is connected with a pressure sensor through the quick connector. The device can be connected with a high-pressure construction manifold on the premise of not dismantling a wellhead production flow, and is used for performing construction operations such as extrusion filling and circulating filling, so that the heavy labor of dismantling the wellhead production flow is avoided, and the damage caused by deformation of a flow pipeline and parts due to the fact that the flow pipeline and the parts are not supported by bearing points after the low-pressure wellhead production flow is dismantled is avoided.
Description
Technical Field
The utility model relates to a construction tool for underground sand prevention and acidification in the petroleum industry, in particular to an underground high-pressure construction connecting device for a wellhead-dismantling-free production process.
Background
The production process on the offshore oil platform is a low-pressure process, and the pressure-resistant grade is only 2.5 MPa. During high-pressure construction operations such as underground extrusion filling, circulating filling, well killing, high-pressure blowout and the like, the pressure required by the construction such as underground high-pressure filling and the like is high, the pressure-resistant grade of a wellhead production flow is low, and the requirement of well control of a construction well cannot be met. In order to meet the well control requirement of a construction well, the original wellhead production process needs to be dismantled, and then a high-pressure construction manifold and a throttling tool which can throttle and press the well are installed to implement the underground high-pressure construction process.
Because the area of the offshore oil platform is limited, the construction space is limited, the workload of removing the wellhead production flow is large, the labor intensity is high, and the construction time is long. After the wellhead production flow consisting of various pipelines and components is dismantled, the pipelines in the wellhead production flow are easy to deform due to no fixed point support, and the construction for recovering the wellhead production flow is more difficult.
The traditional construction method for detecting the construction pressure in high-pressure construction such as underground high-pressure filling, circulating filling and the like is to install a pressure sensor at the large four-way of the oil pipe, and the oil pipe tee joint is required to be installed when the pressure sensor is installed at the large four-way of the oil pipe. Because the oil pipe tee joint and the big four-way of oil pipe are the screw thread connected mode, the installation and the dismantlement of its oil pipe tee joint are comparatively difficult, and if pressure sensor breaks down in the work progress, can't change again during the construction, leave the hidden danger for construction quality in the pit.
Therefore, the utility model needs to invent a connecting device which avoids the production process of removing a wellhead, can quickly install and dismantle a pressure sensor and meets the use requirement of a high-pressure construction well. For this reason, a search was made for related patents:
1. cable formation test anti-seize nipple, patent No. CN 201210433690.0: the utility model discloses a cable stratum test anti-seize short section which can be used under the conditions of high temperature and high pressure, and on one hand, a test instrument is accurately sent into a test part of an oil-gas well; on the other hand, the up-and-down movement of the upper section of the testing pipe column is realized by controlling the opening, the required testing operation is completed, and the device is not suitable for high-pressure construction such as sand prevention, acidification and the like in the petroleum industry.
2. A wireless test sub, patent No. CN 201610835663.4: the utility model provides a wireless test nipple, which comprises a sleeve, a circuit board and a power module, and is suitable for the field of wireless test and is not suitable for high-pressure construction such as sand prevention, acidification and the like in the petroleum industry.
3. Inline stress test nipple, patent No. CN 201220269708.3: the utility model relates to the technical field of a downhole casing string stress test short section, in particular to a linkage type stress test short section which can measure the elastic deformation of a casing string test part by fixing a measuring optical fiber in an optical fiber mounting groove and adopting a preset distributed optical fiber strain test system, and provides early judgment and maintenance for the deformation of a casing string so as to prevent the stress concentration part of the casing string from deforming, breaking or even damaging; the oil production efficiency and the oil production amount are improved. The device is not suitable for high-pressure construction such as sand prevention, acidification and the like in the petroleum industry.
4. Downhole concentric seal test sub, patent No. CN 201811512199.0: in order to solve the technical problem that the conventional sealing test end joint is complicated to salvage and launch, the utility model provides an underground concentric sealing test short section which is easy to launch and salvage. The device is not suitable for high-pressure construction such as sand prevention, acidification and the like in the petroleum industry.
5. A wireless test sub for drilling, patent No. CN 201610835703.5: the utility model provides a wireless test nipple for well drilling, which comprises a sleeve, a circuit board and a power module, and is not suitable for high-pressure construction such as sand prevention, acidification and the like in the petroleum industry.
6. Special test nipple joint of annular test well head, patent number CN 200920110525.5: the special test nipple joint for annulus test wellhead is applied to the connection of an oil field wellhead test port and a test gate, is mainly applied to the test operation of an oil well, and is not suitable for high-pressure construction such as sand prevention, acidification and the like in the oil industry.
Disclosure of Invention
The utility model aims to provide an underground high-pressure construction connecting device of a non-dismantling wellhead production process, wherein a pressure sensor can be installed in the device, and the device is connected with an underground high-pressure construction manifold on the premise of not dismantling the wellhead production process, so that high-pressure construction operations such as underground extrusion filling, circulating filling and the like are carried out, the construction quality is improved, the construction period is shortened, and the production cost is reduced.
The purpose of the utility model is realized as follows:
the utility model provides a exempt from to demolish high-pressure construction connecting device in pit of well head production flow is equipped with and connects hoop, high-pressure construction pipe and bearing sleeve, wherein:
one end of the high-pressure construction pipe is connected with the connecting hoop, and the other end of the high-pressure construction pipe penetrates through the hole of the bearing sleeve to be connected with the nozzle connecting hole of the nozzle sleeve in the wellhead production process;
the bearing sleeve is connected with a plug connecting hole of an oil outlet cavity of the oil nozzle sleeve in a wellhead production process;
the other end of the connecting hoop is connected with a high-pressure construction manifold;
the high-pressure construction pipe is internally provided with a quick connector and is connected with a pressure sensor through the quick connector.
Preferably, the high pressure construction pipe is an integrally manufactured pipe and the thickness of the pipe wall is set between 3.0mm and 5.0 mm.
Preferably, the high-pressure construction pipe is a non-uniform-diameter pipe, external threads are arranged at two ends of the pipe body, the external thread at the large-diameter end of the high-pressure construction pipe is connected with the connecting hoop, and the external thread at the small-diameter end of the high-pressure construction pipe is in threaded connection with a nozzle connecting hole in a nozzle sleeve in a wellhead production process; the pipe body between the large-diameter pipe and the small-diameter pipe in the high-pressure construction pipe is a high-pressure jet pipe, the high-pressure jet pipe is a conical pipe, and the taper of the conical pipe is set to be 25-40 degrees.
Preferably, the inner diameter of the small-diameter pipe in the high-pressure construction pipe is set to be 18-22 mm.
Preferably, the quick coupling installed in the high-pressure construction pipe is a one-way open-close type gas-liquid common coupling; the quick connector is arranged in a pipe body of a large-diameter pipe close to a high-pressure jet pipe in a high-pressure construction pipe.
Preferably, the bearing sleeve is internally provided with a high-pressure construction pipe through hole and a jet pipe matching cavity, and the outer wall of the pipe body at the other end of the jet pipe matching cavity is provided with an external thread which is in threaded connection with a plug connecting hole of an oil outlet cavity of the oil nozzle sleeve in a wellhead production process; the aperture of the high-pressure construction pipe through hole is equal to or larger than the outer diameter of the small-diameter pipe of the high-pressure construction pipe; the jet pipe matching cavity is a conical cavity, and the taper of the conical cavity is larger than that of the high-pressure jet pipe.
Preferably, the connecting hoop is connected with the high-pressure construction manifold through a reducer union.
Compared with the existing underground high-pressure filling construction mode and the connection mode of the pressure sensor, the utility model has the following remarkable effects:
the device is used for carrying out high-pressure construction operations such as sand prevention, acidification and the like, the liquid pressure under the high-pressure construction pipe injection well in the device is only conducted inside the high-pressure construction pipe, the pressure bearing of the high-pressure construction pipe can meet the requirement of high-pressure construction, and the minimum inner diameter of a small-diameter pipe in the high-pressure construction pipe in the device can meet the requirement of construction discharge capacity.
The pressure sensor in the device is arranged in a large-diameter pipe close to a high-pressure jet pipe in a high-pressure construction pipe, so that the device is convenient to install and disassemble, and can be conveniently pulled out of the quick connector if the pressure sensor is damaged during construction, the pressure sensor is timely replaced, and accurate pressure monitoring data can be ensured to be synchronously recorded during construction.
The device can be connected with a high-pressure construction manifold on the premise of not dismantling a wellhead production flow, and is used for performing construction operations such as extrusion filling and circulating filling, so that heavy labor for dismantling the wellhead production flow is avoided, damage caused by deformation of a flow pipeline and parts due to no bearing point support of the flow pipeline and the parts after the low-pressure wellhead production flow is dismantled is avoided, the original wellhead production flow is protected, and economic loss caused by damage of the production flow is avoided.
The utility model has reasonable design, easy processing and low manufacturing cost, changes the existing construction mode of underground high-pressure filling, obviously improves the construction speed, improves the construction quality, shortens the construction period, reduces the labor intensity of workers, reduces the production cost, has obvious use effect and can generate good economic benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural view of the present invention.
In the figure: the high-pressure jet pipe comprises a connecting hoop 1, a high-pressure construction pipe 2, a quick joint 3, a bearing sleeve 4, a high-pressure jet pipe 5 and a jet pipe matching cavity 6.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, 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 merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The utility model has the following embodiments:
example one
Referring to fig. 1, a exempt from to demolish high-pressure construction connecting device in pit of well head production flow is equipped with coupling 1, high-pressure construction pipe 2 and bearing sleeve 4, wherein:
one end of the high-pressure construction pipe 2 is connected with the connecting hoop 1, and the other end of the high-pressure construction pipe penetrates through the high-pressure construction pipe penetrating hole of the bearing sleeve 4 to be connected with a nozzle connecting hole of a nozzle sleeve in the wellhead production process;
the bearing sleeve 4 is connected with a plug connecting hole of an oil outlet cavity of the oil nozzle sleeve in a wellhead production process;
the other end of the connecting hoop 1 is connected with a high-pressure construction manifold;
the high-pressure construction pipe 2 is internally provided with a quick joint 3 and is connected with a pressure sensor through the quick joint 3.
After the high-pressure filling construction is carried out by using the high-pressure filling device, the pressure sensor which is necessary to be used in the high-pressure filling construction is arranged in the high-pressure construction pipe 2, and the pressure sensor is not required to be arranged after the oil pipe tee joint is arranged through the large four-way joint of the oil pipe. The installation mode of the pressure sensor is changed, and the installation and the disassembly of the pressure sensor are greatly facilitated. Meanwhile, if the pressure sensor is damaged in the construction process, the pressure sensor is only required to be pulled out and replaced from the quick connector, and the whole process and synchronous recording and monitoring of the filling pressure and the pressure data in the filling process are ensured in the construction process.
The production control valve in the production flow of the wellhead at one side of the choke sleeve is closed, the choke in the choke sleeve in the production flow of the wellhead is removed, the utility model is connected between the choke sleeve and the high-pressure construction manifold in the production flow of the wellhead, high-pressure filling liquid is injected into the well through the choke sleeve, and the high-pressure filling construction operation in the well can be carried out without removing the production flow of the wellhead connected with the wellhead. The process of dismantling the wellhead production flow is reduced, the labor intensity of workers is greatly reduced, the existing wellhead production flow is protected, the construction efficiency is greatly improved, the construction period is effectively shortened, and the application effect is remarkable.
On the basis of the first embodiment, the utility model also has the following embodiments:
preferably, the high-pressure construction pipe 2 is an integrally manufactured pipe, and the thickness of the pipe wall is set to be 3.0-5.0 mm. The high-pressure construction pipe 2 in the embodiment is integrally processed and manufactured, and the thickness is set to be 3.0 mm-5.0 mm, so that the strength of the high-pressure construction pipe 2 can be ensured, and the construction requirement of underground high-pressure filling can be met.
Further optimization, the high-pressure construction pipe 2 is a non-uniform-diameter pipe, external threads are arranged at two ends of the pipe body, the external thread at the large-diameter end of the high-pressure construction pipe 2 is connected with the connecting hoop 1, and the external thread at the small-diameter end of the high-pressure construction pipe 2 is in threaded connection with a nozzle connecting hole in a nozzle sleeve in a wellhead production process; the pipe body between the large-diameter pipe and the small-diameter pipe in the high-pressure construction pipe 2 is a high-pressure jet pipe 5, the high-pressure jet pipe 5 is a conical pipe, and the taper of the conical pipe is set to be 25-40 degrees. The high-pressure construction pipe 2 in the embodiment is a non-equal-diameter pipe, and the high-pressure jet pipe 5 can pump the high-pressure filling liquid entering the high-pressure construction pipe manifold into the well in a jet flow shape through an oil nozzle sleeve in a wellhead production flow, so that the effect of underground high-pressure construction is improved.
Further optimizing, the inner diameter of the small-diameter pipe in the high-pressure construction pipe 2 is set to be 18-22 mm. The embodiment sets the inner diameter of the pipe body of the small-diameter pipe in the high-pressure construction pipe 2, and can meet the requirement of the discharge capacity of high-pressure filling construction.
Preferably, the quick coupling 3 installed in the high-pressure construction pipe 2 is a one-way open-close type gas-liquid common coupling, such as a one-way open-close type gas-liquid common coupling of model QZB275 or a gas-liquid common coupling of a hydraulic double self-sealing high-pressure structure; the quick connector 3 is arranged in a pipe body of a large-diameter pipe close to the high-pressure jet pipe 5 in the high-pressure construction pipe 2. The structure and the type and the installation position of the quick connector 3 are determined by the embodiment, the quick connector with the structure is convenient to disassemble and quick to install, and liquid flow can be quickly blocked. The quick connector 3 is arranged in the pipe body of the large-diameter pipe in the high-pressure construction pipe 2, so that the connecting hole of the quick connector 3 in the pipe body is convenient to process, the installation and the disassembly are both convenient, the energy of high-pressure filling liquid in the pipe body is gathered, and the filling pressure monitored by the pressure sensor is more accurate.
Further optimizing, a high-pressure construction pipe passing hole and a jet pipe matching cavity 6 are arranged in the bearing sleeve 4, and an external thread is arranged on the outer wall of the pipe body at the other end of the jet pipe matching cavity 6 and is in threaded connection with a plug connecting hole of an oil outlet cavity of the oil nozzle sleeve in a wellhead production process; the aperture of the high-pressure construction pipe through hole is equal to or larger than the outer diameter of the small-diameter pipe of the high-pressure construction pipe 2; the jet pipe matching cavity 6 is a conical cavity, and the taper of the conical cavity is larger than that of the high-pressure jet pipe 5. The embodiment further limits the structure of the bearing sleeve 4, and the jet pipe matching cavity 6 can be matched with the appearance of the high-pressure jet pipe 5 in the high-pressure construction pipe 2. The bearing sleeve 4 with the structure can bear the weight of the high-pressure construction pipe 2 and a high-pressure manifold connected to the rear part, and the bearing sleeve 4 connected with the plug connecting hole of the oil outlet cavity of the oil nozzle sleeve in the wellhead production flow becomes a supporting point of the high-pressure construction manifold.
Further optimize, connect between hoop 1 and the high pressure construction manifold through the reducing joint, that is to say, connect hoop 1 and reducing joint are connected earlier, are connected with the high pressure construction manifold again, can be connected with the high pressure construction manifold of multiple different pipe diameters through the reducing joint like this, convenient construction.
The using method of the utility model is as follows:
1. a pressure sensor is installed in the quick coupling 3 in the high pressure construction pipe 2.
2. And closing the production control valve at one side of the oil nozzle sleeve in the wellhead production process.
3. And closing a sleeve gas back pressure flow valve in the wellhead Christmas tree, emptying the emptying valve, and then disassembling a plug and an oil nozzle in an oil outlet cavity of an oil nozzle sleeve in the wellhead production flow.
4. And the bearing sleeve 4 is arranged on the installation position of the central screw plug in the oil nozzle sleeve and is screwed, and the small-diameter pipe of the high-pressure construction pipe 2 passes through the high-pressure construction pipe through hole of the bearing sleeve 4 and is in threaded connection with the oil nozzle connecting hole in the oil nozzle sleeve.
5. And a reducer union is arranged at the rear end of the connecting hoop 1, the front end of the connecting hoop 1 is connected and fastened with the external thread of the large-diameter pipe in the high-pressure construction pipe 2, and the reducer union at the rear end of the connecting hoop 1 is connected with a high-pressure construction manifold.
In the underground high-pressure construction, workover fluid returns from the oil pipe four-way sleeve gas flow control valve. Because the high-pressure construction pipe 2 is connected and screwed with the oil nozzle connecting hole in the oil nozzle sleeve, high-pressure filling fluid or workover fluid is pumped into the underground from the internal channel of the high-pressure construction pipe 2, and the pressure of the pumped high-pressure fluid cannot be transmitted to the inside of the oil nozzle sleeve and a wellhead production flow connected with the oil nozzle sleeve. The aperture of the through hole of the high-pressure construction pipe in the bearing sleeve 4 is equal to or larger than the outer diameter of the small-diameter pipe of the high-pressure construction pipe 2, the aperture is similar to the outer dimension of the small-diameter pipe of the high-pressure construction pipe 2, and the weight of the high-pressure construction pipe 2 is added on the bearing sleeve 4. The bearing sleeve 4 is installed in the position where the plug is installed on the crude oil nozzle sleeve and screwed tightly, and the weight of the high-pressure construction manifold and the device acts on the crude oil nozzle sleeve and the wellhead production flow, so that the use safety of the device is ensured.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and inventive concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.
Claims (7)
1. The utility model provides a exempt from to demolish high-pressure construction connecting device in pit of well head production flow, characterized by is equipped with connect hoop, high-pressure construction pipe and bearing cover, wherein:
one end of the high-pressure construction pipe is connected with the connecting hoop, and the other end of the high-pressure construction pipe penetrates through the hole of the bearing sleeve to be connected with the nozzle connecting hole of the nozzle sleeve in the wellhead production process;
the bearing sleeve is connected with a plug connecting hole of an oil outlet cavity of the oil nozzle sleeve in a wellhead production process;
the other end of the connecting hoop is connected with a high-pressure construction manifold;
the high-pressure construction pipe is internally provided with a quick connector and is connected with a pressure sensor through the quick connector.
2. The underground high-pressure construction connection device of the demolition-free wellhead production process as claimed in claim 1, wherein the high-pressure construction pipe is an integrally manufactured pipe and the thickness of the pipe wall is set between 3.0mm and 5.0 mm.
3. The downhole high-pressure construction connecting device of the demolition-free wellhead production process as claimed in claim 1 or 2, wherein the high-pressure construction pipe is a non-uniform diameter pipe and both ends of the pipe body are provided with external threads, the external threads of the large-diameter end of the high-pressure construction pipe are connected with the connecting hoop, and the external threads of the small-diameter end of the high-pressure construction pipe are in threaded connection with the nozzle connecting hole in the nozzle casing in the wellhead production process; the pipe body between the large-diameter pipe and the small-diameter pipe in the high-pressure construction pipe is a high-pressure jet pipe, the high-pressure jet pipe is a conical pipe, and the taper of the conical pipe is set to be 25-40 degrees.
4. The underground high-pressure construction connecting device of the demolition-free wellhead production process as claimed in claim 3, wherein the inner diameter of the small-diameter pipe in the high-pressure construction pipe is set to be 18 mm-22 mm.
5. The underground high-pressure construction connecting device of the demolition-free wellhead production process as claimed in claim 4, wherein the quick connector installed in the high-pressure construction pipe is a one-way open-close type gas-liquid common connector; the quick connector is arranged in a pipe body of a large-diameter pipe close to a high-pressure jet pipe in a high-pressure construction pipe.
6. The underground high-pressure construction connecting device of the demolition-free wellhead production flow as claimed in claim 3, wherein the bearing sleeve is provided with a high-pressure construction pipe through hole and a jet pipe matching cavity, and the outer wall of the pipe body at the other end of the jet pipe matching cavity is provided with an external thread to be in threaded connection with a plug connecting hole of an oil outlet cavity of a choke sleeve in the wellhead production flow; the aperture of the high-pressure construction pipe through hole is equal to or larger than the outer diameter of the small-diameter pipe of the high-pressure construction pipe; the jet pipe matching cavity is a conical cavity, and the taper of the conical cavity is larger than that of the high-pressure jet pipe.
7. The underground high-pressure construction connecting device of the demolition-free wellhead production process as claimed in claim 1, wherein the connecting hoop is connected with the high-pressure construction manifold through a reducer union.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123100080.2U CN216446864U (en) | 2021-12-11 | 2021-12-11 | Exempt from to demolish high-pressure construction connecting device in pit of well head production flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123100080.2U CN216446864U (en) | 2021-12-11 | 2021-12-11 | Exempt from to demolish high-pressure construction connecting device in pit of well head production flow |
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| CN216446864U true CN216446864U (en) | 2022-05-06 |
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| CN202123100080.2U Active CN216446864U (en) | 2021-12-11 | 2021-12-11 | Exempt from to demolish high-pressure construction connecting device in pit of well head production flow |
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| CN (1) | CN216446864U (en) |
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2021
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