CN117386317A - Choke manifold for controlling oil jacket blowout and control method thereof - Google Patents
Choke manifold for controlling oil jacket blowout and control method thereof Download PDFInfo
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- CN117386317A CN117386317A CN202310707227.9A CN202310707227A CN117386317A CN 117386317 A CN117386317 A CN 117386317A CN 202310707227 A CN202310707227 A CN 202310707227A CN 117386317 A CN117386317 A CN 117386317A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 210000002445 nipple Anatomy 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 208000028659 discharge Diseases 0.000 claims 2
- 239000000446 fuel Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 18
- 230000001276 controlling effect Effects 0.000 description 14
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 231100000331 toxic Toxicity 0.000 description 6
- 230000002588 toxic effect Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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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)
- Safety Valves (AREA)
Abstract
The invention relates to a choke manifold for controlling oil jacket open flow and a control method thereof, comprising an internal control pipeline, a pipeline five-way pipeline, a first pipeline four-way pipeline, a second pipeline four-way pipeline, a third pipeline four-way pipeline, a fourth pipeline four-way pipeline, a fifth pipeline four-way pipeline and a sixth pipeline four-way pipeline, wherein the choke manifold is a novel choke manifold composed of a conventional choke manifold, two manual choke valves, six flat valves, two four-way pipelines and a flange nipple joint, the filter manifold is of a double-channel structure, each channel is controlled by the manual choke valves and the manual flat valves, and the middle is directly arranged. The invention greatly improves the safety coefficient of field operation, realizes the requirements of energy conservation, emission reduction and consumption reduction and environmental protection, effectively solves the construction problems in the process of gas well pressure relief, well killing and water absorption index measurement, has strong practicability and operability, prolongs the service life of the manifold, and improves the throttling effect of the manifold.
Description
Technical Field
The invention relates to the field of oil and gas well operation, in particular to a choke manifold for controlling oil jacket blowout and a control method thereof.
Background
During workover operation, the oil-gas well needs to be provided with various well control devices to ensure the well control safety of the construction site. The choke manifold is particularly important in practical application, and can achieve the purposes of throttling circulation, pressure relief, diversion blowout and control of wellhead back pressure. At present, the conventional choke manifold is adopted for the workover operation of the oil and gas well in the northwest work area, and the following problems exist: (1) the oil pipe and the sleeve annular space can not be throttled and decompressed at the same time under abnormal conditions, and the throttle blowout speed is low; (2) the size and the trend of the discharge port of the oil pipe cannot be throttled and controlled, and toxic and harmful gas in the oil pipe cannot enter the separator; (3) the oil pipe outlet cannot be fixed; (4) the fluid channel is single, the valve is broken, no standby channel exists, and the reliability is not strong. Therefore, the problems that an outlet cannot be fixed, the discharge capacity cannot be adjusted, toxic and harmful gases such as hydrogen sulfide cannot be separated and treated during oil pipe blowout are urgently solved.
Disclosure of Invention
The invention aims to solve the technical problems of providing a choke manifold for controlling oil jacket blowout and a control method thereof, solving a series of problems that the oil gas well is depressurized, well-killing and water absorption index measurement operation needs choke blowout and the like, being beneficial to reducing well control risks, reducing equipment and pipeline installation and improving production efficiency.
The technical scheme adopted for solving the technical problems is as follows: the method comprises the steps that a choke manifold for controlling oil jacket open flow is constructed, the choke manifold comprises an inner control pipeline, a pipeline five-way valve, a first pipeline four-way valve, a second pipeline four-way valve, a third pipeline four-way valve, a fourth pipeline four-way valve, a fifth pipeline four-way valve and a sixth pipeline four-way valve, the inner control pipeline is connected with the pipeline five-way valve through a first manual flat gate valve, the pipeline five-way valve is also connected with a third manual flat gate valve, a fourth manual flat gate valve and a sixth manual flat gate valve, the third manual flat gate valve is connected with a first manual choke gate valve through a second manual flat gate valve, the first manual choke gate valve is connected with a second pipeline four-way valve through a seventh manual flat gate valve, the fourth manual flat gate valve is connected with the second manual choke gate valve through a thirteenth manual flat gate valve and a sixth pipeline four-way valve, and the sixth manual flat gate valve is connected with the first pipeline four-way valve;
the first pipeline four-way connection is also connected with an eighth manual flat gate valve, a ninth manual flat gate valve and an eleventh manual flat gate valve, the eighth manual flat gate valve is connected with a third manual throttling gate valve, the third manual throttling gate valve is connected with a third pipeline four-way connection through the tenth manual flat gate valve, the ninth manual flat gate valve is connected with a fourth manual throttling gate valve, the fourth manual throttling gate valve is connected with a fifth pipeline four-way connection through a twelfth manual flat gate valve, and the eleventh manual flat gate valve is connected with the fourth pipeline four-way connection;
the fourth pipeline four-way is also connected with a fifteenth manual flat gate valve, a sixteenth manual flat gate valve and a seventeenth manual flat gate valve, the fifteenth manual flat gate valve is connected with the third pipeline four-way, the sixteenth manual flat gate valve is used for connecting an oil pipe outlet, and the seventeenth manual flat gate valve is connected with the fifth pipeline four-way;
the fifth pipeline four-way is connected with the sixth pipeline four-way, and the sixth pipeline four-way is also connected with an eighteenth manual flat gate valve; the third pipeline four-way is connected with the second pipeline four-way, the second pipeline four-way is also connected with a fourteenth manual flat gate valve, and the fourteenth manual flat gate valve is used for connecting a circulating tank.
According to the scheme, connecting flanges are arranged on two sides of each manual throttle gate valve, each pipeline four-way valve, each pipeline five-way valve and each flange nipple.
According to the scheme, the connecting flange contact surface is provided with the sealing steel ring groove, and the two flanges are sealed through the steel ring.
According to the scheme, eight through holes are uniformly distributed on the connecting flange, and the two connecting flanges are connected and fastened through the connecting bolts.
The invention also provides a control method of the choke manifold for controlling the oil jacket blowout, which comprises the following steps:
1) When the oil pipe and the sleeve simultaneously need emergency pressure relief and blowout, and the outlet of the sleeve needs to enter the separator, the outlet of the sleeve is treated by the internal control pipeline, the first manual flat gate valve, the pipeline five-way, the fourth manual flat gate valve, the fifth manual flat gate valve, the second manual throttle gate valve, the thirteenth manual flat gate valve and the eighteenth manual flat gate valve; the oil pipe outlet is formed by a sixteenth manual flat gate valve, a fourth pipeline four-way, an eleventh manual flat gate valve, a first pipeline four-way, an eighth manual flat gate valve, a third manual throttle gate valve, a tenth manual flat gate valve, a third pipeline four-way, a second pipeline four-way and a fourteenth manual flat gate valve, and enters a circulating tank;
2) When the oil pipe and the sleeve pipe simultaneously need emergency pressure relief and blowout, and the outlet of the oil pipe needs to enter the separator, the outlet of the sleeve pipe enters the circulating tank from an internal control pipeline, a first manual flat gate valve, a pipeline five-way valve, a third manual flat gate valve, a second manual flat gate valve, a first manual throttle gate valve, a seventh manual flat gate valve, a second pipeline four-way valve and a fourteen manual flat gate valve; the oil pipe outlet is formed by sixteenth manual flat gate valve, fourth pipeline four-way, eleventh manual flat gate valve, first pipeline four-way, ninth manual flat gate valve, fourth manual throttle gate valve, twelfth manual flat gate valve, fifth pipeline four-way, sixth pipeline four-way and eighteenth manual flat gate valve, and the oil pipe is subjected to separator burning and discharging treatment;
3) And the displacement of the sleeve outlet or the oil pipe outlet is respectively regulated by the first manual throttling gate valve, the second manual throttling gate valve, the third manual throttling gate valve and the fourth manual throttling gate valve, so that the bottom hole pressure is ensured to be slightly larger than the stratum pressure, the balance of a shaft is maintained, and the overflow, the leakage and the blowout dangerous situations are prevented.
The choke manifold for controlling the oil jacket blowout and the control method thereof have the following beneficial effects:
according to the novel throttling manifold formed by the manual throttling valve and the flat valve, the novel throttling manifold can be used for hard fixing of an oil pipe outlet, and the problem of pipeline jumping is solved; regulating a manual throttle valve to control the flow of the discharge port of the oil pipe; the emergency oil jacket simultaneously throttles and discharges; if one side channel fails, the gate valve can be switched to control the oil pipe outlet to use the other channel; the outlet can be controlled to enter the tank or the separator according to the pressure, the gas quantity and the hydrogen sulfide condition on site, so that the aim of selective safe open-flow is fulfilled. The requirements of energy conservation, emission reduction, consumption reduction and environmental protection are met, and the construction difficulties in gas well pressure relief, well killing and water absorption index measurement are effectively solved. The safety coefficient is high, the operation is simple, the throttling blowout effect is good, and the operation safety can be greatly improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic illustration of one of the flow directions of a choke manifold for controlling an oil jacket blow-out;
FIG. 2 is a schematic illustration of a second flow direction of a choke manifold for controlling oil jacket blow-off;
FIG. 3 is a front view of a choke manifold for controlling oil jacket blow-off;
FIG. 4 is a top view of a choke manifold for controlling oil jacket blow-off.
Reference numerals illustrate: 1-an internal control pipeline; 2-a first manual flat gate valve; 3-a first manual throttle valve; 4-a second manual flat gate valve; 5-a third manual flat gate valve; 6, five-way pipeline; 7-fourth manual flat gate valve; 8-a fifth manual flat gate valve; 9-a second manual throttle valve; 10-sixth manual flat gate valve; 11-seventh manual flat gate valve; 12-a third manual throttle valve; 13-eighth manual flat gate valve; 14-a first pipeline four-way; 15-ninth manual flat gate valve; 16-fourth manual throttle valve; 17-tenth manual flat gate valve; 18-eleventh manual flat gate valve; 19-twelfth manual flat gate valve; 20-thirteenth manual flat gate valve; 21-fourteenth manual flat gate valve; 22-a second pipeline four-way; 23-a third pipeline four-way; 24-fifteenth manual flat gate valve; 25-fourth piping four-way; 26-sixteenth manual flat gate valve; 27-seventeenth manual flat gate valve; 28-a fifth pipeline four-way; 29-a sixth pipeline four-way; 30-eighteenth manual flat gate valve.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in figures 1-4, the invention provides a novel throttle manifold which is simple to operate, safe and reliable, and can be used for fixing an oil pipe outlet, controlling the size of the outlet, simultaneously discharging and releasing the oil jacket, discharging and releasing the pressure in emergency and separating toxic and harmful substances such as hydrogen sulfide.
A choke manifold for controlling oil jacket is opened spouts comprises conventional choke manifold, two manual choke valves, six flat valves, two cross and flange nipple joint and constitutes a set of novel choke manifold, and each valve, cross and flange nipple joint both sides all are equipped with flange, are equipped with sealed steel ring groove on the flange contact surface, seal through the steel ring between two flanges, and evenly distributed has eight through-holes on the flange, is equipped with the connecting bolt with through-hole assorted, and two flange pass through connecting bolt and connect fastening. The manual throttle valve and the flat valve are utilized to change different flow directions of the outlets of the oil pipe and the sleeve, so that the mutual noninterference of the oil pipe and the sleeve is realized; the size of the discharge port is controlled by adjusting the switch of the manual throttle valve: if one side channel fails, the gate valve can be switched to control the oil pipe outlet to use the other channel; the outlet can be controlled to enter the tank or the separator according to the pressure, the gas quantity and the hydrogen sulfide condition on site, so that the aim of selective safe open-flow is fulfilled.
The choke manifold for controlling the oil jacket blowout comprises an inner control pipeline 1, a pipeline five-way 6, a first pipeline four-way 14, a second pipeline four-way 22, a third pipeline four-way 23, a fourth pipeline four-way 25, a fifth pipeline four-way 28 and a sixth pipeline four-way 29, wherein the inner control pipeline is connected with the pipeline five-way 6 through a first manual flat gate valve 2, the pipeline five-way 6 is also connected with a third manual flat gate valve 5, a fourth manual flat gate valve 7 and a sixth manual flat gate valve 10, the third manual flat gate valve 5 is connected with the first manual choke gate valve 3 through a second manual flat gate valve 4, the first manual choke gate valve 3 is connected with the second pipeline four-way 22 through a seventh manual flat gate valve 11, the fourth manual flat gate valve 7 is connected with a second manual choke gate valve 9 through a fifth manual flat gate valve 8, the second manual choke valve 9 is connected with the sixth pipeline four-way 29 through a thirteenth manual flat gate valve 20, and the sixth manual flat gate valve 10 is connected with the first pipeline four-way 14;
the first pipeline four-way 14 is also connected with an eighth manual flat gate valve 13, a ninth manual flat gate valve 15 and an eleventh manual flat gate valve 18, the eighth manual flat gate valve 13 is connected with a third manual throttle gate valve 12, the third manual throttle gate valve 12 is connected with a third pipeline four-way 23 through a tenth manual flat gate valve 17, the ninth manual flat gate valve 15 is connected with a fourth manual throttle gate valve 16, the fourth manual throttle gate valve 16 is connected with a fifth pipeline four-way 28 through a twelfth manual flat gate valve 19, and the eleventh manual flat gate valve 18 is connected with a fourth pipeline four-way 25;
the fourth pipeline four-way 25 is also connected with a fifteenth manual flat gate valve 24, a sixteenth manual flat gate valve 26 and a seventeenth manual flat gate valve 27, the fifteenth manual flat gate valve 24 is connected with the third pipeline four-way 23, the sixteenth manual flat gate valve 26 is used for connecting an oil pipe outlet, and the seventeenth manual flat gate valve 27 is connected with a fifth pipeline four-way 28;
the fifth pipeline four-way joint 28 is connected with a sixth pipeline four-way joint 29, and the sixth pipeline four-way joint 29 is also connected with an eighteenth manual flat gate valve 30; the third piping four-way 23 is connected with the second piping four-way 22, the second piping four-way 22 is also connected with a fourteenth manual flat gate valve 21, and the fourteenth manual flat gate valve 21 is used for connecting a circulation tank.
And connecting flanges are arranged on two sides of each manual throttle gate valve, each pipeline four-way valve, each pipeline five-way valve and each flange nipple. A sealing steel ring groove is formed in the contact surface of the connecting flange, and the two flanges are sealed through a steel ring. Eight through holes are uniformly distributed on the connecting flange, and the two connecting flanges are connected and fastened through connecting bolts.
The invention also provides a control method of the choke manifold for controlling the oil jacket blowout, which comprises the following steps:
1) When the oil pipe and the sleeve simultaneously need emergency pressure relief and blowout, and the outlet of the sleeve needs to enter the separator, the outlet of the sleeve is treated by the internal control pipeline 1, the first manual flat gate valve 2, the pipeline five-way 6, the fourth manual flat gate valve 7, the fifth manual flat gate valve 8, the second manual throttle gate valve 9, the thirteenth manual flat gate valve 20 and the eighteenth manual flat gate valve 30; the oil pipe outlet enters the circulation tank from a sixteenth manual flat gate valve 26, a fourth pipeline four-way 25, an eleventh manual flat gate valve 18, a first pipeline four-way 14, an eighth manual flat gate valve 13, a third manual throttle gate valve 12, a tenth manual flat gate valve 17, a third pipeline four-way 23, a second pipeline four-way 22 and a fourteenth manual flat gate valve 21;
2) When the oil pipe and the sleeve pipe need to be subjected to emergency pressure relief and blowout at the same time, and the outlet of the oil pipe needs to enter the separator, the outlet of the sleeve pipe enters the circulation tank from an internal control pipeline 1, a first manual flat gate valve 2, a pipeline five-way 6, a third manual flat gate valve 5, a second manual flat gate valve 4, a first manual throttle gate valve 3, a seventh manual flat gate valve 11, a second pipeline four-way 22 and a fourteen manual flat gate valve 21; the oil pipe outlet is processed by a sixteenth manual flat gate valve 26, a fourth pipeline four-way joint 25, an eleventh manual flat gate valve 18, a first pipeline four-way joint 14, a ninth manual flat gate valve 15, a fourth manual throttling gate valve 16, a twelfth manual flat gate valve 19, a fifth pipeline four-way joint 28, a sixth pipeline four-way joint 29 and an eighteenth manual flat gate valve 30, and enters a separator for burning and discharging;
3) And the first manual throttle gate valve 3, the second manual throttle gate valve 9, the third manual throttle gate valve 12 and the fourth manual throttle gate valve 16 are respectively adjusted to adjust the discharge capacity of the sleeve outlet or the oil pipe outlet, so that the bottom hole pressure is ensured to be slightly higher than the stratum pressure, the balance of a shaft is maintained, and the occurrence of dangerous situations such as leakage, overflow, blowout and the like is prevented.
The invention has the following advantages:
1) The manual throttle valve, the flat valve and the switch of the flange nipple are adjusted, so that independent open-flow of oil pipes and sleeves is realized, and the oil sleeves are simultaneously open-flow without interference.
2) The outlet can be controlled to enter the tank or the separator according to the pressure and gas quantity conditions on site, so that the aim of selective open-flow is fulfilled.
3) The flow of the discharge port is controlled by adjusting the switch of the manual throttle valve, the throttle discharge effect is good, the phenomena of serious well bore defect, stratum collapse, stratum activation and the like caused by uncontrolled discharge are effectively prevented, and the effect of safe discharge and pressure relief can be achieved.
4) If the annular space of the sleeve is blocked, normal pressure relief and blowout cannot be performed, meanwhile, the pressure in the well is high, the gas quantity is large, toxic and harmful gases such as hydrogen sulfide are contained, the pressure relief of the oil pipe is controlled by the novel throttle manifold, the outlet enters the separator, the toxic and harmful gases such as hydrogen sulfide are introduced into the separator, and then desulfurization treatment is performed, so that the problem that the sleeve is difficult to safely blowout is effectively solved.
5) The novel throttle manifold uses manual throttle valve and passageway dual configuration, if one side passageway trouble appears, can adjust gate valve control oil pipe export and use another passageway, guarantees that oil pipe spouts maneuverability and security, improves the reliability of novel throttle manifold.
6) The problems of overflow, spraying and the like of the well control liquid during the open flow of the oil pipe can be effectively solved, the environmental protection risk is effectively reduced, the recycling of the well control liquid is realized, and the construction cost is reduced.
7) The outlet is hard-fixed by using a hard pipeline and a foundation pier and the like when the oil pipe is opened and sprayed, so that the quick connection of the pipeline is realized, and the safety coefficient of an operation site is improved.
8) The novel throttle manifold has the characteristics of simple structure, simple operation, labor saving, high efficiency and the like.
9) The novel choke manifold is suitable for underground operations such as gas well pressure relief, well killing and water absorption index measurement, and can effectively solve construction difficulties in gas well pressure relief, well killing and water absorption index measurement.
The invention is applied to an oil-gas well, and solves the problems that outlets are mutually interfered, the outlet flow of an oil pipe can not be controlled, the outlet of the oil pipe can not be fixed, and toxic and harmful gases such as hydrogen sulfide in the oil pipe are introduced into a separator for separation when an oil sleeve for oil-gas well pressure relief, open flow, well control and water absorption operation is carried out simultaneously. The novel throttle manifold has the advantages of high safety coefficient, simplicity in operation and good throttle blowout effect.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (5)
1. A throttle manifold for controlling oil jacket blowout, characterized by comprising an inner control pipeline (1), a pipeline five-way valve (6), a first pipeline four-way valve (14), a second pipeline four-way valve (22), a third pipeline four-way valve (23), a fourth pipeline four-way valve (25), a fifth pipeline four-way valve (28) and a sixth pipeline four-way valve (29), wherein the inner control pipeline is connected with the pipeline five-way valve (6) through a first manual flat gate valve (2), the pipeline five-way valve (6) is also connected with a third manual flat gate valve (5), a fourth manual flat gate valve (7) and a sixth manual flat gate valve (10), the third manual flat gate valve (5) is connected with the first manual throttle four-way valve (3) through a second hand flat gate valve (4), the first manual throttle (3) is connected with the second pipeline four-way valve (22) through a seventh manual flat gate valve (11), the fourth manual throttle flat gate valve (7) is connected with a fourth manual flat gate valve (9) through a fifth manual flat gate valve (8), and the fourth manual throttle flat gate valve (9) is connected with the sixth pipeline (20) through a thirteenth manual flat gate valve (29);
the first pipeline four-way joint (14) is further connected with an eighth manual flat gate valve (13), a ninth manual flat gate valve (15) and an eleventh manual flat gate valve (18), the eighth manual flat gate valve (13) is connected with a third manual throttling gate valve (12), the third manual throttling gate valve (12) is connected with a third pipeline four-way joint (23) through a tenth manual flat gate valve (17), the ninth manual flat gate valve (15) is connected with a fourth manual throttling gate valve (16), the fourth manual throttling gate valve (16) is connected with a fifth pipeline four-way joint (28) through a twelfth manual flat gate valve (19), and the eleventh manual flat gate valve (18) is connected with the fourth pipeline four-way joint (25);
the fourth pipeline four-way joint (25) is further connected with a fifteenth manual flat gate valve (24), a sixteenth manual flat gate valve (26) and a seventeenth manual flat gate valve (27), the fifteenth manual flat gate valve (24) is connected with the third pipeline four-way joint (23), the sixteenth manual flat gate valve (26) is used for connecting an oil pipe outlet, and the seventeenth manual flat gate valve (27) is connected with the fifth pipeline four-way joint (28);
the fifth pipeline four-way joint (28) is connected with the sixth pipeline four-way joint (29), and the sixth pipeline four-way joint (29) is also connected with an eighteenth manual flat gate valve (30); the third pipeline four-way joint (23) is connected with the second pipeline four-way joint (22), the second pipeline four-way joint (22) is also connected with a fourteenth manual flat gate valve (21), and the fourteenth manual flat gate valve (21) is used for connecting a circulation tank.
2. The choke manifold for controlling the blowout of oil jackets as set forth in claim 1, wherein each of the manual choke valve, each of the piping four-way, the piping five-way, and the flange nipple are provided with connecting flanges on both sides.
3. The choke manifold for controlling the blowout of an oil jacket as set forth in claim 2, wherein the connecting flange has a sealing rim groove on a contact surface thereof, and the two flanges are sealed by a rim.
4. The choke manifold for controlling the blowout of oil jackets as set forth in claim 2, wherein eight through holes are uniformly distributed on the connecting flange, and the two connecting flanges are fastened by connecting bolts.
5. A control method for controlling a choke manifold for controlling an oil jacket blowout of a fluid in accordance with claim 1, comprising the steps of:
1) When the oil pipe and the sleeve need to be subjected to emergency pressure relief and blowout at the same time, and the outlet of the sleeve needs to enter the separator, the outlet of the sleeve is subjected to gas discharge treatment by an internal control pipeline (1), a first manual flat gate valve (2), a pipeline five-way valve (6), a fourth manual flat gate valve (7), a fifth manual flat gate valve (8), a second manual throttle gate valve (9), a thirteenth manual flat gate valve (20), and an eighteenth manual flat gate valve (30); the outlet of the oil pipe is formed by a sixteenth manual flat gate valve (26), a fourth pipeline four-way valve (25), an eleventh manual flat gate valve (18), a first pipeline four-way valve (14), an eighth manual flat gate valve (13), a third manual throttling gate valve (12), a tenth manual flat gate valve (17), a third pipeline four-way valve (23), a second pipeline four-way valve (22), a fourteenth manual flat gate valve (21) and a circulating tank;
2) When the oil pipe and the sleeve need emergency pressure relief and blowout at the same time, and the outlet of the oil pipe needs to enter the separator, the outlet of the sleeve enters the circulation tank from an internal control pipeline (1), a first manual flat gate valve (2), a pipeline five-way valve (6), a third manual flat gate valve (5), a second manual flat gate valve (4), a first manual throttle gate valve (3), a seventh manual flat gate valve (11), a second pipeline four-way valve (22), and a fourteenth manual flat gate valve (21); the oil pipe outlet is processed by a sixteenth manual flat gate valve (26), a fourth pipeline four-way (25), an eleventh manual flat gate valve (18), a first pipeline four-way (14), a ninth manual flat gate valve (15), a fourth manual throttling gate valve (16), a twelfth manual flat gate valve (19), a fifth pipeline four-way (28), a sixth pipeline four-way (29), an eighteenth manual flat gate valve (30) and the separator fuel discharge;
3) And the first manual throttling gate valve (3), the second manual throttling gate valve (9), the third manual throttling gate valve (12) and the fourth manual throttling gate valve (16) are respectively adjusted to adjust the discharge capacity of the sleeve outlet or the oil pipe outlet, so that the bottom hole pressure is ensured to be slightly larger than the stratum pressure, the balance of a shaft is maintained, and the overflow, the leakage and the blowout danger are prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310707227.9A CN117386317A (en) | 2023-06-15 | 2023-06-15 | Choke manifold for controlling oil jacket blowout and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310707227.9A CN117386317A (en) | 2023-06-15 | 2023-06-15 | Choke manifold for controlling oil jacket blowout and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117386317A true CN117386317A (en) | 2024-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310707227.9A Pending CN117386317A (en) | 2023-06-15 | 2023-06-15 | Choke manifold for controlling oil jacket blowout and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117386317A (en) |
-
2023
- 2023-06-15 CN CN202310707227.9A patent/CN117386317A/en active Pending
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