CN212563166U - Compact ultrahigh pressure oil and gas production wellhead device - Google Patents
Compact ultrahigh pressure oil and gas production wellhead device Download PDFInfo
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- CN212563166U CN212563166U CN202021908205.7U CN202021908205U CN212563166U CN 212563166 U CN212563166 U CN 212563166U CN 202021908205 U CN202021908205 U CN 202021908205U CN 212563166 U CN212563166 U CN 212563166U
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000306 component Substances 0.000 claims abstract description 19
- 241000191291 Abies alba Species 0.000 claims abstract description 16
- 239000008358 core component Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 27
- 238000011084 recovery Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000008719 thickening Effects 0.000 claims description 2
- 239000004519 grease Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
A compact ultrahigh-pressure oil and gas production wellhead device is formed by combining an upper oil production tree and a lower oil pipe head. The core component of the Christmas tree is an oblique cross four-way connected valve bank; the lower part of the oblique cross four-way connecting valve bank is connected with an oil pipe head through a main valve part with a reducing joint; a threaded flange, a meter connector and a pressure measuring assembly are sequentially arranged above the oblique four-way connected valve bank; the left side and the right side of the oblique four-way conjoined valve bank are respectively provided with a bent pipe joint, an instrument flange and a pressure measuring component; on the outer side of the instrument flanges on the left side and the right side, a hydraulic safety valve is arranged on one side, a manual hidden rod flat valve with an umbrella-shaped gear driver is arranged on the other side, and threaded flanges and pipe plugs at the outer ends of the two valves are arranged. In addition, in the tubing head and the oblique cross four-way connected valve bank, except for the hydraulic safety valve, other valves are manual hidden rod flat valves with umbrella-shaped gear drivers on the tops. Therefore, the device has the characteristics of small volume, light weight, small resistance, long service life, easy operation and the like.
Description
Technical Field
The utility model relates to a petroleum machinery, oil recovery and gas production well head device.
Background
The ultrahigh pressure oil and gas production wellhead device with the pressure of more than 100MPa is a new petroleum machinery product required by partial oil and gas fields in northwest China. Because of the extreme operating pressures to be experienced, the wall thickness of all components in the wellhead must be made very thick to prevent a blowout accident. When the wall thickness of the component is increased, the volume and weight of the component are increased. If the structural form of the traditional oil and gas production wellhead device is continuously adopted, namely a Christmas tree with a square four-way and a plurality of valve combinations is additionally arranged above the tubing head, the whole product is very tall, heavy and incomparable, and great difficulty is caused to the field carrying, installation, maintenance, operation and use of the wellhead device. In addition, the left and right-angle turning pipelines of the Christmas tree formed by the square four-way and the pipe valve are easy to damage under the impact of ultrahigh pressure sand-containing oil gas flow, so that the service life of the product is influenced, and the cost of oil gas exploitation is increased.
Disclosure of Invention
To the above problem, the utility model discloses a new product structure and advanced machining technique provide a volume less, weight is lighter, and the resistance is less, the life-span is longer, easy transport and the compact superhigh pressure oil recovery and gas production wellhead assembly of being convenient for operate.
The utility model is composed of an upper Christmas tree and a lower oil pipe head; the characteristics are as follows: the core component of the Christmas tree is an oblique cross four-way connected valve bank; the lower part of the oblique cross four-way connecting valve bank is connected with an oil pipe head through a main valve part with a reducing joint; a threaded flange, a meter connector and a pressure measuring assembly are sequentially arranged above the oblique four-way connected valve bank; the left side and the right side of the oblique four-way conjoined valve bank are respectively provided with a bent pipe joint, an instrument flange and a pressure measuring component; on the outer side of the instrument flanges on the left side and the right side, a hydraulic safety valve is arranged on one side, a manual hidden rod flat valve with an umbrella-shaped gear driver is arranged on the other side, and threaded flanges and pipe plugs at the outer ends of the two valves are arranged.
Because the core component of the Christmas tree is the oblique cross four-way conjoined valve group, the Christmas tree is a new component formed by connecting four kinds of five parts, namely a safety valve, a four-way valve, a top valve and wing valves on two sides, which are independent in the existing product; the flange, the connecting piece and the sealing piece which are butted at four positions among the original five parts are eliminated; therefore, the volume and the weight of the product are greatly reduced, and the risk of high-pressure leakage at a plurality of interfaces is reduced. The main valve part with reducing joint connected to the tubing head below the Christmas tree is one new part comprising reducing joint and main valve, and has greatly reduced height and weight. The oblique cross four-way conjoined valve group equally divides the original left and right pipelines with right angle turns into two pipelines with 45-degree oblique angle turns, thereby greatly reducing the flow resistance of ultrahigh pressure sand-containing oil gas flow and the damage to the Christmas tree and further prolonging the service life of the whole product.
Drawings
FIG. 1 is a schematic front view of the present invention with a partial cross-sectional view of the general structure;
FIG. 2 is a schematic side view of the present invention with a partial cross-section of the general structure;
fig. 3 is an enlarged schematic view of the structure of the oil pipe hanger component of the present invention.
The part names indicated by reference numerals in the drawings are as follows:
1. the main valve part with the reducing joint comprises a main valve part with the reducing joint, 1.1, the reducing joint, 1.2, a main valve, 2, a diagonal four-way connected valve group, 2.1, a safety valve, 2.2, a diagonal four-way, 2.3, a wing valve, 2.4, a top valve, 3, a bent pipe joint, 4, an instrument flange, 5, a hydraulic safety valve, 6, a threaded flange, 7, a pipe plug, 8, a pressure measuring component, 9, a meter joint, 10, a manual hidden rod flat valve, 11, a sealing gasket ring, 12, a screw nut, 13, a tubing head four-way, 14, a tubing hanger, 15, a grease injection valve, 16, a BT sealing ring, 17, a pressure relief valve, 18, a locking component, 19, a pipeline sealing component, 20, the sealing gasket ring, 21, the screw nut, 14.1, a hollow body column, 14.2, an upper and lower extrusion type X-shaped metal sealing ring, 14.3, an O-type rubber sealing ring, 14.4 and a.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
the utility model is formed by combining two big parts of the Christmas tree above and the oil pipe head below. The pressure measuring components 8 used in the Christmas tree and the tubing head have the same structure and are composed of a double male-short joint at the lower part, a stop valve at the middle part and a pressure gauge at the upper part, and the pressure gauges adopt a shock-proof and sulfur-proof pressure gauge. The utility model discloses in, runner hole, pressure chamber and its flange butt joint department in the middle of all spare parts all adopt the different or the same metal seal backing ring 11 of specification or 20 and the screw nut 12 or 21 of equipartition to link to prevent the destruction and the leakage of ultrahigh pressure oil gas stream.
The utility model discloses the production tree major part of top comprises main valve part 1, the cross disjunctor valves 2, elbow fitting 3, instrument flange 4, the relief valve 5 that surges, screw thread formula flange 6, plug for pipe 7, pressure measurement subassembly 8, table joint 9, manual dark pole wafer valve 10, sealed backing ring 11 and screw nut 12 that take the reducing to connect. The main valve part 1 with the reducing joint is formed by connecting a reducing joint 1.1 and a main valve 1.2; the main valve 1.2 is a manual hidden rod flat valve structure, the reducing joint 1.1 is used as a valve body, and all parts of the hidden rod flat valve except the valve body are vertically arranged at the valve cavity at one side of the reducing joint 1.1; a bevel gear driver is arranged at the top of the main valve 1.2, a valve rod is driven to rotate in situ by manpower through a speed reduction and torque increase method, a flashboard is driven to move up and down by directly using threads at the lower end of the valve rod, and a flow passage hole in the middle of the reducing joint 1.1 is controlled; two symmetrical stepped holes with threads at inlets are also processed on the lower flange of the reducing joint 1.1, and a grease injection valve 15 and a pressure relief valve 17 are respectively arranged at the orifices and used for pressure tests or supplementing sealing grease. The skew cross four-way connected valve group 2 is formed by connecting a safety valve 2.1, a skew cross four-way 2.2, wing valves 2.3 on two sides and a top valve 2.4; the included angles between the left and right flow passage holes and the upper and lower flow passage holes of the cross joint 2.2 are both 45 degrees; the safety valve 2.1 at the lower part, the wing valves 2.3 at the two sides and the top valve 2.4 at the upper part all use the cross joint 2.2 as a valve body, all parts of each valve except the valve body are respectively and vertically arranged at four valve cavities at one side surface of the cross joint 2.2, and four gate plates respectively control four flow passage holes of the cross joint 2.2. In the oblique four-way connected valve group 2, a safety valve 2.1 at the lower part is a flat valve structure driven by hydraulic pressure and reset by a spring; the wing valves 2.3 on the two sides and the top valve 2.4 above are both of manual non-rising stem flat valve structures; the top of the valve is provided with bevel gear drivers, the valve rod is driven by manpower to rotate in situ by a speed reduction and torque increase method, and the flashboard is driven to move up and down by directly using the threads at the lower end of the valve rod.
In order to meet the requirements of ultrahigh pressure oil extraction and gas production, a threaded flange 6, a meter connector 9 and a pressure measuring assembly 8 are sequentially arranged above the oblique four-way connected valve group 2; the left side and the right side of the oblique four-way conjoined valve group 2 are respectively provided with an elbow joint 3, an instrument flange 4 and a pressure measuring component 8 which are used for measuring the working pressure in respective pipelines; on the outer side of the instrument flanges 4 on the left side and the right side, a hydraulic safety valve 5 is arranged on one side, a manual hidden rod flat valve 10 with an umbrella-shaped gear driver, and threaded flanges 6 and pipe plugs 7 at the outer ends of the two valves are arranged on the other side.
The utility model discloses first major part of oil pipe of below is by first cross 13 of oil pipe, oil pipe hanger 14, notes fat valve 15, BT sealing washer 16, pressure-relief valve 17, locking part 18, pipeline seal assembly 19 and instrument flange 4, screw thread formula flange 6, plug 7, pressure measurement subassembly 8, manual dark pole wafer valve 10 to and seal backing ring 11, screw nut 12 constitute. The upper end surface of the tubing head cross 13 is connected with the Christmas tree by a sealing gasket ring 20 and a screw nut 21. The upper flange of the four-way joint 13 of the oil pipe head is provided with two symmetrical step through holes with threads at the inlet at the circumferential side wall, and pipeline sealing components 19 are respectively arranged in the two step through holes; the lower side is provided with evenly distributed step through holes with threads at two ends, and locking parts 18 are arranged in the step through holes and used for locking the oil pipe hanger 14. The lower flange of the tubing head four-way 13, as well as the grease injection valve 15, the BT sealing ring 16 and the pressure relief valve 17 on the inner and outer side walls are used for connecting the casing head and the casing protruding from the sealed casing head. Two manual non-rising stem flat valves 10 with umbrella-shaped gear drivers, an instrument flange 4 clamped between the two valves, a threaded flange 6 and a pipe plug 7 outside the two valves are symmetrically connected to two sides of the four-way pipe head 13 through a sealing gasket ring 11 and a screw nut 12 respectively; above the instrument flange 4, a pressure measuring assembly 8 is arranged for measuring the working pressure in the casing.
The center of the tubing head cross 13 is fixedly connected with a tubing hanger 14 by a circular truncated cone step hole and locking parts 19 uniformly distributed on the circumference of an upper flange. The tubing hanger 14 in the tubing head is a component with a hollow cylindrical body 14.1 as a main body; both ends of the central through hole of the hollow cylindrical body 14.1 are processed into taper hole threads which are respectively used for connecting an external oil pipe and a hoisting device; the excircle of the hollow cylindrical body 14.1 is thickened at the middle part contacted with the tubing head four-way 13 and at the upper part contacted with the main valve element 1 with a reducing joint in the Christmas tree, and is respectively provided with a group of up-down extrusion type X-shaped metal sealing rings 14.2 and an O-shaped rubber sealing ring 14.3; the metal sealing element is high pressure resistant and abrasion resistant, and the rubber sealing element is used for enhancing the sealing effect. Two symmetrical elongated holes are processed on the upper end face and the lower end face of the excircle thickening section in the middle of the oil pipe hanger 14, threaded holes with thickened diameters are processed at the two ends of the two elongated holes, and small pipe plugs 14.4 are installed in the holes.
Two pipeline sealing components 19 arranged at the flange of the four-way pipe head 13, wherein the middle part of the two pipeline sealing components is a slender pipe fitting with a raised sleeveless shoulder, threaded holes with the increased diameter are processed at the two ends of a central hole of the slender pipe fitting, and small pipe plugs 14.4 are arranged in the threaded holes to prevent leakage; the outer circle of the slender pipe fitting is wrapped with a group of elastic sealing rings and a compression nut so as to be conveniently installed in a step through hole of the oil pipe head four-way joint 13 and then sealed. When the user needs, all the small pipe plugs 14.4 on the tubing hanger 14 and the pipeline sealing assembly 19 can be removed, and hydraulic pipelines for operating the downhole safety valve are installed through two symmetrical elongated holes on the tubing hanger 14 and the pipeline sealing assembly 19 arranged on the upper side of the tubing head four-way joint 13.
Claims (7)
1. A compact ultrahigh pressure oil and gas production wellhead device is formed by combining an upper Christmas tree and a lower tubing head; the method is characterized in that: the core component of the Christmas tree is an oblique cross four-way connected valve bank; the lower part of the oblique cross four-way connecting valve bank is connected with an oil pipe head through a main valve part with a reducing joint; a threaded flange, a meter connector and a pressure measuring assembly are sequentially arranged above the oblique four-way connected valve bank; the left side and the right side of the oblique four-way conjoined valve bank are respectively provided with a bent pipe joint, an instrument flange and a pressure measuring component; on the outer side of the instrument flanges on the left side and the right side, a hydraulic safety valve is arranged on one side, a manual hidden rod flat valve with an umbrella-shaped gear driver is arranged on the other side, and threaded flanges and pipe plugs at the outer ends of the two valves are arranged.
2. The compact ultra-high pressure oil and gas recovery wellhead assembly according to claim 1 wherein: the main valve part with the reducing joint is formed by connecting the reducing joint and a main valve; the main valve is of a manual non-rising stem flat valve structure, the reducing joint is used as a valve body, and all parts of the non-rising stem flat valve except the valve body are vertically arranged at the valve cavity at one side of the reducing joint; the top of the main valve is provided with a bevel gear driver, a valve rod is driven to rotate in situ by manpower through a speed reduction and torque increase method, and a flashboard is driven to move up and down by threads at the lower end of the valve rod directly to control a flow passage hole in the middle of the reducing joint.
3. The compact ultra-high pressure oil and gas recovery wellhead assembly according to claim 1 wherein: the skew cross four-way connected valve group is formed by connecting a safety valve, a skew cross four-way valve, a top valve and wing valves on two sides; the included angles between the left and right flow passage holes and the upper and lower flow passage holes of the cross four-way joint are both 45 degrees; the safety valve below, the top valve above and the wing valves on two sides all use the cross four-way as valve bodies, all parts of each valve except the valve bodies are respectively and vertically arranged at four valve cavities on one side surface of the cross four-way, and four gate plates respectively control four flow passage holes of the cross four-way.
4. A compact ultra high pressure oil and gas production wellhead assembly as claimed in claim 1 or claim 3 in which: in the oblique four-way connected valve bank, a safety valve at the lower part is a flat valve structure with hydraulic drive and spring reset; the top valve above and the wing valves on the two sides are both of manual non-rising stem flat valve structures; the top of the valve is provided with bevel gear drivers, the valve rod is driven by manpower to rotate in situ by a speed reduction and torque increase method, and the flashboard is driven to move up and down by directly using the threads at the lower end of the valve rod.
5. The compact ultra-high pressure oil and gas recovery wellhead assembly according to claim 1 wherein: two manual non-rising stem flat valves with umbrella-shaped gear drivers, an instrument flange clamped between the two valves, threaded flanges outside the two valves and a pipe plug are symmetrically connected to two sides of the four-way pipe head through a sealing gasket ring and a screw nut respectively; and pressure measuring components are arranged above the instrument flanges.
6. The compact ultra-high pressure oil and gas recovery wellhead assembly according to claim 1 wherein: an oil pipe hanger in an oil pipe head is a part taking a hollow cylindrical body as a main body; both ends of the central through hole of the hollow cylindrical body are processed into taper hole threads; the excircle of the hollow cylindrical body is thickened at the middle part contacted with the four-way joint of the tubing head and at the upper part contacted with a main valve part with a reducing joint in the Christmas tree, and a group of up-down extrusion type X-shaped metal sealing rings and an O-shaped rubber sealing ring are respectively arranged on the excircle of the hollow cylindrical body.
7. The compact ultra-high pressure oil and gas recovery wellhead assembly according to claim 1 wherein: the upper flange of the four-way of the oil pipe head is provided with two symmetrical step through holes with threads at the inlet at the circumferential side wall, and pipeline sealing components are arranged in the two step through holes; on two upper and lower terminal surfaces of the excircle thickening section in the middle of the oil pipe hanger, two symmetrical elongated holes are processed, threaded holes with thickened diameters are processed at two ends of the two elongated holes, and small pipe plugs are arranged in the holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908205.7U CN212563166U (en) | 2020-08-31 | 2020-08-31 | Compact ultrahigh pressure oil and gas production wellhead device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908205.7U CN212563166U (en) | 2020-08-31 | 2020-08-31 | Compact ultrahigh pressure oil and gas production wellhead device |
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| Publication Number | Publication Date |
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| CN212563166U true CN212563166U (en) | 2021-02-19 |
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| CN202021908205.7U Withdrawn - After Issue CN212563166U (en) | 2020-08-31 | 2020-08-31 | Compact ultrahigh pressure oil and gas production wellhead device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894514A (en) * | 2020-08-31 | 2020-11-06 | 江苏宏泰石化机械有限公司 | Compact ultrahigh pressure oil (gas) production wellhead device |
| CN113187425A (en) * | 2021-04-26 | 2021-07-30 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure ultrahigh-temperature high-sulfur-resistance HH-grade gas production wellhead device |
| CN113513284A (en) * | 2021-08-27 | 2021-10-19 | 江苏宏泰石化机械有限公司 | Compact shale gas production wellhead assembly |
-
2020
- 2020-08-31 CN CN202021908205.7U patent/CN212563166U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894514A (en) * | 2020-08-31 | 2020-11-06 | 江苏宏泰石化机械有限公司 | Compact ultrahigh pressure oil (gas) production wellhead device |
| CN111894514B (en) * | 2020-08-31 | 2024-04-02 | 江苏宏泰石化机械有限公司 | Compact ultrahigh pressure oil extraction wellhead device |
| CN113187425A (en) * | 2021-04-26 | 2021-07-30 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure ultrahigh-temperature high-sulfur-resistance HH-grade gas production wellhead device |
| CN113513284A (en) * | 2021-08-27 | 2021-10-19 | 江苏宏泰石化机械有限公司 | Compact shale gas production wellhead assembly |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210219 Effective date of abandoning: 20240402 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210219 Effective date of abandoning: 20240402 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |