CN105626004A - Blowout erosion-resistant throttle manifold for oil and gas wells - Google Patents
Blowout erosion-resistant throttle manifold for oil and gas wells Download PDFInfo
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- CN105626004A CN105626004A CN201610119939.9A CN201610119939A CN105626004A CN 105626004 A CN105626004 A CN 105626004A CN 201610119939 A CN201610119939 A CN 201610119939A CN 105626004 A CN105626004 A CN 105626004A
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 85
- 210000002445 nipple Anatomy 0.000 claims abstract description 77
- 239000007921 spray Substances 0.000 claims description 59
- 239000000463 material Substances 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 130
- 239000012530 fluid Substances 0.000 description 8
- 206010020852 Hypertonia Diseases 0.000 description 7
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 7
- 238000010079 rubber tapping Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000003245 working effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000009096 changqing Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a blowout erosion-resistant throttle manifold for oil and gas wells. The blowout erosion-resistant throttle manifold comprises a fixed throttle valve, a manual needle throttle valve, five manual flat gate valves, two erosion-resistant reducing nipples, two pipeline crosses, two pipeline brackets and manifold pipelines. An erosion-resistant reducing oil nozzle is arranged in the fixed throttle valve, the corresponding erosion-resistant reducing nipple is mounted on downstream of the fixed throttle valve, the corresponding erosion-resistant reducing nipple is similarly mounted on downstream of the manual needle throttle valve, two throttle branches and a direct discharge branch are controlled by means of opening or closing different manual flat gate valve and needle valve combinations, and accordingly pressures of oil pipes and casings in post-fracture blowout procedures can be controlled. Compared with existing throttle manifolds controlled by gate valves or needle valves, the blowout erosion-resistant throttle manifold has the advantages that erosion of the oil nozzle, the nipples and the gate valves due to blowout liquid can be reduced, the ground throttle and pressure releasing efficiency can be improved, the replacement costs of vulnerable parts of the blowout erosion-resistant throttle manifold can be saved, the service life of the blowout erosion-resistant throttle manifold can be prolonged, the blowout erosion-resistant throttle manifold is high in practicality and suitable for post-fracture blowout operation on the oil and gas wells, and obvious effects can be realized.
Description
Technical field
The invention belongs to the borehole operation technical field such as well fracturing, acidifying, it is specifically related to a kind of oil gas well and puts spray erosion resistance throttle manifold.
Background technology
Current horizontal well multi-stage water power abrasive perforating, annular fracturing Technology obtains large-scale promotion application at Changqing oilfields, put after pressure break and spray process needs to casing annulus pressure, tubing pressure controls, existing throttle manifold adopts gate valve or needle-valve to throttle usually, also some throttle manifolds are had to adopt fixation type throttle valve and gate valve to throttle, but due to gate valve, needle-valve and fixation type throttle valve erosion wear resistance are poor, especially put in spray operation process after pressure break, with a large amount of reservoir sand or perforation sand in sleeve pipe returning fluid, to gate valve, needle-valve and fixation type throttle valve cause serious erosion, and pressure-controlling effect is not good, usually often put spray at scene and just can damage a gate valve in one or two hour, needle-valve or fixation type throttle valve.
Summary of the invention
It is an object of the invention to solve that existing throttle manifold puts positive choke pressure drop sudden change in spray process after pressure break, excessive, the serious erosion of positive choke exit end falls in pressure drop regulation and control out of true (i.e. oil, cover pressure-controlling out of true), temperature, anti-erosion pipe nipple entrance end erosion damage, gate valve and the serious erosion damage of needle-valve problem.
For this reason, the present invention provides a kind of oil gas well and puts spray erosion resistance throttle manifold, comprises pipeline four-way one, pipeline five logical two, is connected by pipeline one, pipeline one is provided with manual platform gate valve four between pipeline four-way one and pipeline five logical two;
One of them mouth of pipe of pipeline four-way one is communicated with fixation type throttle valve by pipeline two, the axial centre line of pipeline two is perpendicular to the axial centre line of pipeline one, pipeline two is provided with manual platform gate valve one, fixation type throttle valve is connected with pipeline five logical by reducing pipe nipple one, and the axial centerline parallel of reducing pipe nipple one is in the axial centre line of pipeline one;
One of them mouth of pipe of pipeline five logical two is connected with pipeline five logical by pipeline five, the axial centerline parallel of pipeline five is in the axial centre line of pipeline two, pipeline five is provided with manual platform gate valve five, the another one mouth of pipe of pipeline five logical two is connected with manual needle-like formula throttling valve by pipeline four, pipeline four is provided with manual platform gate valve three, manual needle-like formula throttling valve is connected with pipeline four-way two by reducing pipe nipple two, by pipeline tee joint between pipeline four-way two and pipeline five logical, pipeline three is provided with manual platform gate valve two;
The inner chamber of described fixation type throttle valve is provided with reducing oil nozzle, and reducing oil nozzle is connected with reducing pipe nipple one.
Described reducing oil nozzle is the cylindrical structural of hollow, and the internal diameter of inner chamber is gradual change type, near the largest diameter of reducing pipe nipple one one end.
Described reducing pipe nipple one is identical with the structure of reducing pipe nipple two, and the internal diameter of inner chamber is gradual change type, and the diameter of reducing pipe nipple one near reducing oil nozzle one end is minimum, and the diameter of reducing pipe nipple two near pipeline four-way two one end is minimum.
Described reducing oil nozzle and reducing pipe nipple one card connect.
Described reducing oil nozzle is threaded with reducing pipe nipple one.
On the internal chamber wall of described reducing pipe nipple one, reducing pipe nipple two and reducing oil nozzle, all heap is welded with YG8 Wimet tungsten carbide material.
The thickness of built-up welding is 4mm.
Throttle manifold overall long 2595mm, wide 1450mm, high 600mm.
The size of described reducing oil nozzle is 2��20mm.
2-9/16 selected by described pipeline one, pipeline two, pipeline three, pipeline four, pipeline five " pipeline, the logical footpath of pipeline is 65mm.
The useful effect of the present invention: this kind of oil gas well provided by the invention puts spray erosion resistance throttle manifold, utilize the change of the internal structure of oil nozzle and anti-erosion pipe nipple, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve the entrance end erosion of oil nozzle outlet end erosion and anti-erosion pipe nipple, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously. Achieve the accurate control to oil pipe, casing pressure by the different manual platform gate valve of switch, needle-valve combination, reduce the row's of returning sand-carrying agent to the erosion of oil nozzle, pipe nipple, gate valve, it is to increase surface throttling efficiency. It is convenient that erosion resistance throttling oil nozzle and erosion resistance pipe nipple are changed, and has good erosive wear resistance. Not only increasing the reducing pressure by regulating flow effect of throttle manifold, also a saving the replacing cost of manifold consumable accessory, extend the work-ing life of throttle manifold, practical, effect is remarkable, puts spray operation after being applicable to well fracturing.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation that oil gas well puts spray erosion resistance throttle manifold.
Description of reference numerals: 1, pipeline four-way one; 2, manual platform gate valve one; 3, fixation type throttle valve; 4, reducing oil nozzle; 5, reducing pipe nipple one; 6, pipeline five logical one; 7, manual platform gate valve two; 8, pipeline four-way two I; 9, reducing pipe nipple two; 10, manual needle-like formula throttling valve; 11, manual platform gate valve three; 12, pipeline five logical two; 13, manual platform gate valve four; 14, manual platform gate valve five; 15, pipeline one; 16, pipeline two; 17, pipeline three; 18, pipeline four; 19, pipeline five.
Embodiment
Embodiment 1:
As shown in Figure 1, a kind of oil gas well puts spray erosion resistance throttle manifold, comprises pipeline four-way 1, pipeline five logical 2 12, is connected by pipeline 1, pipeline 1 is provided with manual platform gate valve 4 13 between pipeline four-way 1 and pipeline five logical 2 12;
One of them mouth of pipe of pipeline four-way 1 is communicated with fixation type throttle valve 3 by pipeline 2 16, the axial centre line of pipeline 2 16 is perpendicular to the axial centre line of pipeline 1, pipeline 2 16 is provided with manual platform gate valve 1, fixation type throttle valve 3 is connected with pipeline five logical 1 by reducing pipe nipple 1, and the axial centerline parallel of reducing pipe nipple 1 is in the axial centre line of pipeline 1;
One of them mouth of pipe of pipeline five logical 2 12 is connected with pipeline five logical 1 by pipeline 5 19, the axial centerline parallel of pipeline 5 19 is in the axial centre line of pipeline 2 16, pipeline 5 19 is provided with manual platform gate valve 5 14, the another one mouth of pipe of pipeline five logical 2 12 is connected with manual needle-like formula throttling valve 10 by pipeline 4 18, pipeline 4 18 is provided with manual platform gate valve 3 11, manual needle-like formula throttling valve 10 is connected with pipeline four-way 28 by reducing pipe nipple 29, it is connected by pipeline 3 17 between pipeline four-way 28 and pipeline five logical 1, pipeline 3 17 is provided with manual platform gate valve 27,
The inner chamber of described fixation type throttle valve 3 is provided with reducing oil nozzle 4, and reducing oil nozzle 4 is connected with reducing pipe nipple 1.
This throttle manifold is two enter scene 2 structure, and side adopts manual needle-like formula throttling valve 10 to control, and another side adopts fixation type throttle valve 3 to control, middle in line. Manifold internally-fixed throttling valve 3 is built with the erosion resistance reducing oil nozzle 4 of particular design, and downstream is provided with the erosion resistance reducing pipe nipple 1 of particular design, and manual needle-like formula throttling valve 10 downstream is provided with the erosion resistance reducing pipe nipple 29 of particular design equally. By opening or close different manual platform gate valves, needle-valve array mode, select the erosion resistance reducing oil nozzle 4 of the different size being pre-installed in fixation type throttle valve 3, control two-way throttles, 1 tunnel is in line, thus realize the accurate control put after pressure break in spray process oil pipe, casing pressure, prevent hypertonia from causing pipeline to burst, or hypotony causes stratum to tell sand, avoid oil nozzle erosion in throttle manifold.
The mode of connection of above-mentioned throttle manifold is: in manifold, all connections adopt Flange joint, and flange is 2-7/8 " EUER27 standard 350 flange, supporting bolt is M27 �� 3 �� 175 threaded stud; Throttle manifold entrance and well mouth oil pipe gate valve, well head cover sluice valve are connected, and throttle manifold outlet is connected with relief line, spray discharge capacity and pressure at the erosion resistance reducing oil nozzle of fixation type throttle valve built with suitable dimension according to putting after on-the-spot pressure break.
Spray discharge capacity and oil is put according to after on-the-spot hydraulic perforating pressure break, cover pressure-controlling needs, reducing oil nozzle 4 is installed in fixation type throttle valve, the size of reducing oil nozzle 4 needs to select according to scene, by switch manual platform gate valve 1 when putting spray, manual platform gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual needle-like formula throttling valve 10, to oil pipe, casing pressure accurately controls, line pressure release control is carried out by switch manual platform gate valve 5 14 during hypertonia, prevent superpressure from affecting control blowout manifold quality safety, realize throttling and put spray, concrete, this oil gas well puts the working process of spray erosion resistance throttle manifold:
First manifold cover on pipeline four-way 1 is put into mouth be connected with well head cover sluice valve, manifold oil on pipeline five logical 2 12 is put into mouth be connected with well mouth oil pipe gate valve, the manifold outlet at logical one 6 places of pipeline five is connected with high pressure hose or hard pipeline (liquids recovery), and the manifold outlet at pipeline four-way 28 place is connected with hard relief line;
After above-mentioned connection completes, jet flow amount and well head oil, cover pressure-controlling needs are put according to oil gas well, select the reducing oil nozzle 4 of suitable dimension, again reducing oil nozzle 4 is loaded in fixation type throttle valve 3, reducing pipe nipple 1 is installed in the downstream of fixation type throttle valve 3, installs reducing pipe nipple 29 equally in manual needle-like formula throttling valve 10 downstream;
When sleeve pipe puts spray, turning off well mouth oil pipe gate valve, open manual platform gate valve 1, close manual platform gate valve 4 13, manual platform gate valve 5 14, manual platform gate valve 27, can throttle accurately control to casing pressure; If casing pressure is too high, can opening manual platform gate valve 4 13, manual platform gate valve 5 14, close manual platform gate valve 3 11, cover tapping body flows out from logical one 6 exits of pipeline five, release part liquid pressure;
When oil pipe puts spray, turn off well head cover sluice valve, opening manual platform gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual platform gate valve 1 and manual needle-like formula throttling valve 10, close manual platform gate valve 5 14, can throttle accurately control to tubing pressure; If oil puts hypertonia, can opening manual platform gate valve 5 14, oil tapping body is logical 1 from pipeline five, the outlet of pipeline four-way 28 is flowed out, release part liquid pressure;
Put after spray terminates, close well head sleeve pipe gate valve and oil pipe gate valve, the throttle manifold fixation type throttle valve 3 of dismounting cleaning in time, manual needle-like formula throttling valve 10 and all manual platform gate valves, maintenance or replacing erosion resistance reducing oil nozzle, needle-valve, gate valve etc., again to put spray operation.
This kind of oil gas well provided by the invention puts spray erosion resistance throttle manifold, utilize the change of the internal structure of oil nozzle and anti-erosion pipe nipple, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve the entrance end erosion of oil nozzle outlet end erosion and anti-erosion pipe nipple, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously. Achieve the accurate control to oil pipe, casing pressure by the different manual platform gate valve of switch, needle-valve combination, reduce the row's of returning sand-carrying agent to the erosion of oil nozzle, pipe nipple, gate valve, it is to increase surface throttling efficiency. It is convenient that erosion resistance throttling oil nozzle and erosion resistance pipe nipple are changed, and has good erosive wear resistance. Not only increasing the reducing pressure by regulating flow effect of throttle manifold, also a saving the replacing cost of manifold consumable accessory, extend the work-ing life of throttle manifold, practical, effect is remarkable, puts spray operation after being applicable to well fracturing.
Embodiment 2:
On the basis of embodiment 1, described reducing oil nozzle 4 is the cylindrical structural of hollow, the internal diameter of inner chamber is gradual change type, near the largest diameter of reducing pipe nipple 1 one end, erosion resistance reducing oil nozzle 4 chock pressure difference can regulate between 0.2 ~ 35MPa, with design pressure error within the scope of �� 0.5MPa. Utilize the change of reducing oil nozzle 4 internal structure, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve oil nozzle outlet end erosion, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously.
The mode of connection of above-mentioned throttle manifold is: in manifold, all connections adopt Flange joint, and flange is 2-7/8 " EUER27 standard 350 flange, supporting bolt is M27 �� 3 �� 175 threaded stud; Throttle manifold entrance and well mouth oil pipe gate valve, well head cover sluice valve are connected, and throttle manifold outlet is connected with relief line, spray discharge capacity and pressure at the erosion resistance reducing oil nozzle of fixation type throttle valve built with suitable dimension according to putting after on-the-spot pressure break.
Spray discharge capacity and oil is put according to after on-the-spot hydraulic perforating pressure break, cover pressure-controlling needs, reducing oil nozzle 4 is installed in fixation type throttle valve, the size of reducing oil nozzle 4 needs to select according to scene, by switch manual platform gate valve 1 when putting spray, manual platform gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual needle-like formula throttling valve 10, to oil pipe, casing pressure accurately controls, line pressure release control is carried out by switch manual platform gate valve 5 14 during hypertonia, prevent superpressure from affecting control blowout manifold quality safety, realize throttling and put spray, concrete, this oil gas well puts the working process of spray erosion resistance throttle manifold:
First manifold cover on pipeline four-way 1 is put into mouth be connected with well head cover sluice valve, manifold oil on pipeline five logical 2 12 is put into mouth be connected with well mouth oil pipe gate valve, the manifold outlet at logical one 6 places of pipeline five is connected with high pressure hose or hard pipeline (liquids recovery), and the manifold outlet at pipeline four-way 28 place is connected with hard relief line;
After above-mentioned connection completes, jet flow amount and well head oil, cover pressure-controlling needs are put according to oil gas well, select the reducing oil nozzle 4 of suitable dimension, again reducing oil nozzle 4 is loaded in fixation type throttle valve 3, reducing pipe nipple 1 is installed in the downstream of fixation type throttle valve 3, installs reducing pipe nipple 29 equally in manual needle-like formula throttling valve 10 downstream;
When sleeve pipe puts spray, turning off well mouth oil pipe gate valve, open manual platform gate valve 1, close manual platform gate valve 4 13, manual platform gate valve 5 14, manual platform gate valve 27, can throttle accurately control to casing pressure; If casing pressure is too high, can opening manual platform gate valve 4 13, manual platform gate valve 5 14, close manual platform gate valve 3 11, cover tapping body flows out from logical one 6 exits of pipeline five, release part liquid pressure;
When oil pipe puts spray, turn off well head cover sluice valve, opening manual platform gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual platform gate valve 1 and manual needle-like formula throttling valve 10, close manual platform gate valve 5 14, can throttle accurately control to tubing pressure; If oil puts hypertonia, can opening manual platform gate valve 5 14, oil tapping body is logical 1 from pipeline five, the outlet of pipeline four-way 28 is flowed out, release part liquid pressure;
Put after spray terminates, close well head sleeve pipe gate valve and oil pipe gate valve, the throttle manifold fixation type throttle valve 3 of dismounting cleaning in time, manual needle-like formula throttling valve 10 and all manual platform gate valves, maintenance or replacing erosion resistance reducing oil nozzle, needle-valve, gate valve etc., again to put spray operation.
This kind of oil gas well provided by the invention puts spray erosion resistance throttle manifold, utilize the change of the internal structure of oil nozzle and anti-erosion pipe nipple, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve the entrance end erosion of oil nozzle outlet end erosion and anti-erosion pipe nipple, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously. Achieve the accurate control to oil pipe, casing pressure by the different manual platform gate valve of switch, needle-valve combination, reduce the row's of returning sand-carrying agent to the erosion of oil nozzle, pipe nipple, gate valve, it is to increase surface throttling efficiency. It is convenient that erosion resistance throttling oil nozzle and erosion resistance pipe nipple are changed, and has good erosive wear resistance. Not only increasing the reducing pressure by regulating flow effect of throttle manifold, also a saving the replacing cost of manifold consumable accessory, extend the work-ing life of throttle manifold, practical, effect is remarkable, puts spray operation after being applicable to well fracturing.
Embodiment 3:
Described reducing pipe nipple 1 is identical with the structure of reducing pipe nipple 29, and the internal diameter of inner chamber is gradual change type, and the diameter of reducing pipe nipple 1 near reducing oil nozzle 4 one end is minimum, and the diameter of reducing pipe nipple 29 near pipeline four-way 28 one end is minimum. Utilize reducing pipe nipple 1 and the change of reducing pipe nipple 29 internal structure, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve reducing pipe nipple 1 and reducing pipe nipple 29 entrance end erosion, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously.
The mode of connection of above-mentioned throttle manifold is: in manifold, all connections adopt Flange joint, and flange is 2-7/8 " EUER27 standard 350 flange, supporting bolt is M27 �� 3 �� 175 threaded stud; Throttle manifold entrance and well mouth oil pipe gate valve, well head cover sluice valve are connected, and throttle manifold outlet is connected with relief line, spray discharge capacity and pressure at the erosion resistance reducing oil nozzle of fixation type throttle valve built with suitable dimension according to putting after on-the-spot pressure break.
Spray discharge capacity and oil is put according to after on-the-spot hydraulic perforating pressure break, cover pressure-controlling needs, reducing oil nozzle 4 is installed in fixation type throttle valve, the size of reducing oil nozzle 4 needs to select according to scene, by switch manual platform gate valve 1 when putting spray, manual platform gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual needle-like formula throttling valve 10, to oil pipe, casing pressure accurately controls, line pressure release control is carried out by switch manual platform gate valve 5 14 during hypertonia, prevent superpressure from affecting control blowout manifold quality safety, realize throttling and put spray, concrete, this oil gas well puts the working process of spray erosion resistance throttle manifold:
First manifold cover on pipeline four-way 1 is put into mouth be connected with well head cover sluice valve, manifold oil on pipeline five logical 2 12 is put into mouth be connected with well mouth oil pipe gate valve, the manifold outlet at logical one 6 places of pipeline five is connected with high pressure hose or hard pipeline (liquids recovery), and the manifold outlet at pipeline four-way 28 place is connected with hard relief line;
After above-mentioned connection completes, jet flow amount and well head oil, cover pressure-controlling needs are put according to oil gas well, select the reducing oil nozzle 4 of suitable dimension, again reducing oil nozzle 4 is loaded in fixation type throttle valve 3, reducing pipe nipple 1 is installed in the downstream of fixation type throttle valve 3, installs reducing pipe nipple 29 equally in manual needle-like formula throttling valve 10 downstream;
When sleeve pipe puts spray, turning off well mouth oil pipe gate valve, open manual platform gate valve 1, close manual platform gate valve 4 13, manual platform gate valve 5 14, manual platform gate valve 27, can throttle accurately control to casing pressure; If casing pressure is too high, can opening manual platform gate valve 4 13, manual platform gate valve 5 14, close manual platform gate valve 3 11, cover tapping body flows out from logical one 6 exits of pipeline five, release part liquid pressure;
When oil pipe puts spray, turn off well head cover sluice valve, opening manual platform gate valve 4 13, manual platform gate valve 3 11, manual platform gate valve 27, manual platform gate valve 1 and manual needle-like formula throttling valve 10, close manual platform gate valve 5 14, can throttle accurately control to tubing pressure; If oil puts hypertonia, can opening manual platform gate valve 5 14, oil tapping body is logical 1 from pipeline five, the outlet of pipeline four-way 28 is flowed out, release part liquid pressure;
Put after spray terminates, close well head sleeve pipe gate valve and oil pipe gate valve, the throttle manifold fixation type throttle valve 3 of dismounting cleaning in time, manual needle-like formula throttling valve 10 and all manual platform gate valves, maintenance or replacing erosion resistance reducing oil nozzle, needle-valve, gate valve etc., again to put spray operation.
This kind of oil gas well provided by the invention puts spray erosion resistance throttle manifold, utilize the change of the internal structure of oil nozzle and anti-erosion pipe nipple, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve the entrance end erosion of oil nozzle outlet end erosion and anti-erosion pipe nipple, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously. Achieve the accurate control to oil pipe, casing pressure by the different manual platform gate valve of switch, needle-valve combination, reduce the row's of returning sand-carrying agent to the erosion of oil nozzle, pipe nipple, gate valve, it is to increase surface throttling efficiency. It is convenient that erosion resistance throttling oil nozzle and erosion resistance pipe nipple are changed, and has good erosive wear resistance. Not only increasing the reducing pressure by regulating flow effect of throttle manifold, also a saving the replacing cost of manifold consumable accessory, extend the work-ing life of throttle manifold, practical, effect is remarkable, puts spray operation after being applicable to well fracturing.
Embodiment 4:
On the basis of embodiment 1, described reducing oil nozzle 4 and reducing pipe nipple 1 card connects or is threaded, and this kind of mode of connection is for convenience detach, is putting after spray terminates, it is possible to dismantle in time, maintenance or change reducing oil nozzle, again to put spray operation.
Embodiment 5:
On the internal chamber wall of described reducing pipe nipple 1, reducing pipe nipple 29 and reducing oil nozzle 4, all heap is welded with YG8 Wimet tungsten carbide material, and the thickness of built-up welding is 4mm, has higher erosive wear resistance.
Embodiment 6:
Throttle manifold overall long 2595mm, wide 1450mm, high 600mm, the size of described reducing oil nozzle 4 is 2��20mm, 2-9/16 selected by described pipeline 1, pipeline 2 16, pipeline 3 17, pipeline 4 18, pipeline 5 19 " pipeline, pressure-bearing 35MPa, the logical footpath of pipeline is 65mm.
This kind of oil gas well provided by the invention puts spray erosion resistance throttle manifold, utilize the change of the internal structure of oil nozzle and anti-erosion pipe nipple, when making this throttle manifold of fluid flow that it returns out from oil pipe, sleeve pipe, flow velocity and pressure steadily reduce, pressure drop slowly reduces, temperature is fallen gently, the control of oil pipe, casing pressure is accurately, thus effectively solve the entrance end erosion of oil nozzle outlet end erosion and anti-erosion pipe nipple, avoid forming gas hydrate to block throttle manifold and well head because the temperature that throttles falls too fast simultaneously. Achieve the accurate control to oil pipe, casing pressure by the different manual platform gate valve of switch, needle-valve combination, reduce the row's of returning sand-carrying agent to the erosion of oil nozzle, pipe nipple, gate valve, it is to increase surface throttling efficiency. It is convenient that erosion resistance throttling oil nozzle and erosion resistance pipe nipple are changed, and has good erosive wear resistance. Not only increasing the reducing pressure by regulating flow effect of throttle manifold, also a saving the replacing cost of manifold consumable accessory, extend the work-ing life of throttle manifold, practical, effect is remarkable, puts spray operation after being applicable to well fracturing.
More than enumerating is only the illustration to the present invention, does not form the restriction to protection scope of the present invention, and every design same or similar with the present invention all belongs within protection scope of the present invention. The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (10)
1. an oil gas well puts spray erosion resistance throttle manifold, it is characterized in that: comprise pipeline four-way one (1), pipeline five logical two (12), it is connected by pipeline one (15) between pipeline four-way one (1) and pipeline five logical two (12), pipeline one (15) is provided with manual platform gate valve four (13);
One of them mouth of pipe of pipeline four-way one (1) is communicated with fixation type throttle valve (3) by pipeline two (16), the axial centre line of pipeline two (16) is perpendicular to the axial centre line of pipeline one (15), pipeline two (16) is provided with manual platform gate valve one (2), fixation type throttle valve (3) is connected with pipeline five logical (6) by reducing pipe nipple one (5), and the axial centerline parallel of reducing pipe nipple one (5) is in the axial centre line of pipeline one (15);
One of them mouth of pipe of pipeline five logical two (12) is connected with pipeline five logical (6) by pipeline five (19), the axial centerline parallel of pipeline five (19) is in the axial centre line of pipeline two (16), pipeline five (19) is provided with manual platform gate valve five (14), the another one mouth of pipe of pipeline five logical two (12) is connected with manual needle-like formula throttling valve (10) by pipeline four (18), pipeline four (18) is provided with manual platform gate valve three (11), manual needle-like formula throttling valve (10) is connected with pipeline four-way two (8) by reducing pipe nipple two (9), it is connected by pipeline three (17) between pipeline four-way two (8) and pipeline five logical (6), pipeline three (17) is provided with manual platform gate valve two (7),
The inner chamber of described fixation type throttle valve (3) is provided with reducing oil nozzle (4), and reducing oil nozzle (4) is connected with reducing pipe nipple one (5).
2. oil gas well as claimed in claim 1 puts spray erosion resistance throttle manifold, it is characterised in that: the cylindrical structural that described reducing oil nozzle (4) is hollow, the internal diameter of inner chamber is gradual change type, near the largest diameter of reducing pipe nipple one (5) one end.
3. oil gas well as claimed in claim 1 puts spray erosion resistance throttle manifold, it is characterized in that: described reducing pipe nipple one (5) is identical with the structure of reducing pipe nipple two (9), the internal diameter of inner chamber is gradual change type, the diameter of reducing pipe nipple one (5) near reducing oil nozzle (4) one end is minimum, and the diameter of reducing pipe nipple two (9) near pipeline four-way two (8) one end is minimum.
4. oil gas well as claimed in claim 1 puts spray erosion resistance throttle manifold, it is characterised in that: described reducing oil nozzle (4) connects with reducing pipe nipple one (5) card.
5. oil gas well as claimed in claim 1 puts spray erosion resistance throttle manifold, it is characterised in that: described reducing oil nozzle (4) is threaded with reducing pipe nipple one (5).
6. oil gas well as described in claim 1 or 2 or 3 puts spray erosion resistance throttle manifold, it is characterised in that: on the internal chamber wall of described reducing pipe nipple one (5), reducing pipe nipple two (9) and reducing oil nozzle (4), all heap is welded with YG8 Wimet tungsten carbide material.
7. oil gas well as claimed in claim 6 puts spray erosion resistance throttle manifold, it is characterised in that: the thickness of built-up welding is 4mm.
8. oil gas well as claimed in claim 1 puts spray erosion resistance throttle manifold, it is characterised in that: throttle manifold overall long 2595mm, wide 1450mm, high 600mm.
9. oil gas well as claimed in claim 6 puts spray erosion resistance throttle manifold, it is characterised in that: the size of described reducing oil nozzle (4) is 2��20mm.
10. oil gas well as claimed in claim 8 puts spray erosion resistance throttle manifold, it is characterized in that: 2-9/16 selected by described pipeline one (15), pipeline two (16), pipeline three (17), pipeline four (18), pipeline five (19) " pipeline, the logical footpath of pipeline is 65mm.
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| CN201610119939.9A CN105626004B (en) | 2016-03-03 | 2016-03-03 | A kind of Oil/gas Well open flow erosion resistance choke manifold |
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| CN106194130A (en) * | 2016-09-28 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of choke manifold with adjustable throttling positive choke |
| CN106246146A (en) * | 2016-09-28 | 2016-12-21 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of adjustable choke manifold |
| CN106401511A (en) * | 2016-10-28 | 2017-02-15 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | High-pressure filtering throttle manifold and filtering throttling method thereof |
| CN106437575A (en) * | 2016-10-28 | 2017-02-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | High-pressure fine filtering manifold and filtering method thereof |
| CN110145246A (en) * | 2019-04-12 | 2019-08-20 | 淮安市井神钻采机具有限公司 | A kind of new material spraying is anti-to fill the stifled anticorrosive throttle well killing manifold of mud high abrasion |
| CN113266307A (en) * | 2020-02-14 | 2021-08-17 | 中国石油天然气股份有限公司 | Fracturing fluid discharge control device and throttle valve |
| CN115898304A (en) * | 2023-03-09 | 2023-04-04 | 威飞海洋装备制造有限公司 | Ocean three-dimensional choke manifold |
| CN116591644A (en) * | 2023-07-17 | 2023-08-15 | 大庆市天德忠石油科技有限公司 | Hydraulic sand blasting perforation choke manifold |
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| CN106194130B (en) * | 2016-09-28 | 2019-08-09 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of choke manifold with adjustable throttling positive choke |
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| CN106401511B (en) * | 2016-10-28 | 2019-02-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of high-pressure filteration choke manifold and its filtering throttling method |
| CN110145246A (en) * | 2019-04-12 | 2019-08-20 | 淮安市井神钻采机具有限公司 | A kind of new material spraying is anti-to fill the stifled anticorrosive throttle well killing manifold of mud high abrasion |
| CN113266307A (en) * | 2020-02-14 | 2021-08-17 | 中国石油天然气股份有限公司 | Fracturing fluid discharge control device and throttle valve |
| CN113266307B (en) * | 2020-02-14 | 2023-01-10 | 中国石油天然气股份有限公司 | Fracturing fluid discharge control device and throttle valve |
| CN115898304A (en) * | 2023-03-09 | 2023-04-04 | 威飞海洋装备制造有限公司 | Ocean three-dimensional choke manifold |
| CN116591644A (en) * | 2023-07-17 | 2023-08-15 | 大庆市天德忠石油科技有限公司 | Hydraulic sand blasting perforation choke manifold |
| CN116591644B (en) * | 2023-07-17 | 2023-09-19 | 大庆市天德忠石油科技有限公司 | Hydraulic sand blasting perforation choke manifold |
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Effective date of registration: 20211013 Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 room 1207, Changqing building, Changqing Xing Long Yuan District, Xi'an, Shaanxi Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |
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