CN201241652Y - Poisonous and harmful gas drainage device at well head of workover well - Google Patents
Poisonous and harmful gas drainage device at well head of workover well Download PDFInfo
- Publication number
- CN201241652Y CN201241652Y CNU2008201097381U CN200820109738U CN201241652Y CN 201241652 Y CN201241652 Y CN 201241652Y CN U2008201097381 U CNU2008201097381 U CN U2008201097381U CN 200820109738 U CN200820109738 U CN 200820109738U CN 201241652 Y CN201241652 Y CN 201241652Y
- Authority
- CN
- China
- Prior art keywords
- casing
- well head
- well
- box body
- workover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000009931 harmful effect Effects 0.000 title claims abstract description 31
- 231100000614 poison Toxicity 0.000 title abstract 5
- 230000007096 poisonous effect Effects 0.000 title abstract 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 231100000331 toxic Toxicity 0.000 claims description 26
- 230000002588 toxic effect Effects 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 11
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 206010016825 Flushing Diseases 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A drainage device for poisonous and harmful gas at a well head during workover is applied to the well workover construction of an oil production well, and poisonous and harmful gas such as hydrogen sulfide, carbon monoxide and the like at the well head is discharged. Is characterized in that: the box body is a closed box welded by steel plates, and a liquid discharge pipe is fixed at the lower part of the box body. The top of the box body is provided with an exhaust hole which is connected with the inlet of the blower. An induced draft tube is fixed on the wall of the box body. The exhaust port of the induced draft pipe is arranged in the box body, and the inlet of the induced draft pipe is arranged outside the box body. A baffle is fixed in the box body and is vertically opposite to an exhaust port of the induced draft tube. The effect is as follows: can be used for setting up the low pressure drainage region for the well head, the poisonous and harmful gas who will overflow discharges after managing to find time through the low pressure drainage region for do not have the poisonous and harmful gas who leaks near the construction well head, reach the normal construction that does not influence the workover, protection constructor life safety's effect.
Description
Technical field
The utility model relates to the oil well repairing operation technical field, and particularly well head overflows the drainage isolated plant of toxic and harmfuls such as hydrogen sulfide, carbon monoxide.
Background technology
In oilfield process, need carry out constructions such as well workover, formation testing operation to producing well.Well head has toxic and harmfuls such as hydrogen sulfide and carbon monoxide to overflow, and has influence on the safety of daily well workover construction greatly.Common way is with related solution well-flushings such as Hydrogen Sulfide Inhibitor at present, removes toxic and harmful, and this way not only operating expenses is high, and the equipment that great in constructing amount, the cycle is grown, employs is many, as cooperations such as needs tank car, solution car and pump trucks.The time of well-flushing removing toxic and harmful is long, and effectively the well workover time is short.In addition, well-flushing causes formation damage and environment pollution easily.
The utility model content
The purpose of this utility model is: a kind of well workover well head toxic and harmful drainage system is provided, adopts drainage system, eliminate toxic and harmful in the well head, reduce the harm to the constructor, ensure production safety.
The technical solution adopted in the utility model is: well workover well head toxic and harmful drainage system mainly comprises valve, discharging tube, casing, baffle plate, blower cover, blast fan and induced duct composition.Casing is the closed box of steel plate welding, is fixed with discharging tube in the bottom of casing, is connected with valve on the discharging tube.Deposit fluid physical efficiency in the casing is by valve and discharging tube discharging.Steam vent is arranged at the top at casing, and steam vent connects the inlet of blast fan.On the wall of casing, be fixed with induced duct.The exhaust opening of induced duct is in casing, and the import of induced duct is in the casing outside, and the intake energy of induced duct is connected with the by-pass port pipeline that is lower than the wellhead flange plane.Be fixed with baffle plate in casing, baffle plate is relative with the exhaust opening of induced duct, can make the gas and changing direction that enters in the casing.
Described blast fan has two, and one is carried out air inducing work, and one standby, when a blast fan breaks down, utilizes emergency blower air inducing, can not cause shutdown because of blast fan breaks down, and the well head toxic and harmful is got rid of in influence.
In order to enter the gas and changing direction in the casing, the exhaust opening end of described induced duct is a bend pipe, and the angle of bend pipe is between 30～60 degree.The plane of baffle plate is vertical with the bend pipe center line.
Be evenly distributed with the hole on the described baffle plate.
Blower cover is arranged at the bottom at steam vent, and described blower cover is conical.
Described casing is rectangular configuration or cylindrical structural.
The beneficial effects of the utility model: the utility model well workover well head toxic and harmful drainage system; can be used for low pressure drainage zone being set for well head; discharging after the toxic and harmful that will overflow is found time by low pressure drainage zone; near the toxic and harmful that does not leak the feasible construction well head; reach the normal construction that does not influence workover treatment; the effect of protection constructor life security makes full use of the great difficult problem that construction safety is perplexed in the ingenious solution of existing resource.
Utilize this conventional wellhead component of well head full three links to carry out the main mediation passage of toxic and harmful, the well head annex that need not increase other just can be finished the strick precaution improvement work of toxic and harmful at well head.Specific practice is to connect this drainage system by the bypass that the position is lower than the wellhead flange plane, produce the low pressure drainage zone that a brute force is found time, make all fluids all must circulate, spill into the root problem that causes personnel and construction danger more than the wellhead flange plane thereby solved toxic and harmful along the channeling direction in this low pressure drainage zone.
Blast fan adopts the emptying ability at 10m
3More than/the min, with the air intake vent of big discharge capacity blast fan is airtight when being connected on the oil well full three links bypass, between blast fan and full three links bypass, will form low (bearing) nip territory, rule according to gas flow, all gases in the zone of this regional connectivity all must flow along this area of low pressure.We are called low pressure drainage zone this zone.If when utilizing instruments such as self-sealing blowout preventer in construction, this zone will produce negative pressure, and will be more beneficial to drainage.
After starting blast fan, this low pressure drainage zone will in the well and the air-flow of well head form and attract, cause the air that overflows gas and well head whole in the well to flow to bypass position simultaneously, because the gas in the well overflows negligible amounts, it is big that the air mass flow of well head becomes relatively, form the strong air-flow that in pit shaft, flows backwards, overflow gas in the well that overflows on can subtend and form strong compacting and guide effect, prevented that toxic and harmful from spilling into well head.Connect relief line by air outlet, the gas that drains can be released in down the safety zone in air port from blast fan.
Make full use of the wellhead assembly of former well, do not influencing the normal construction progress and guaranteeing under the situation of constructor's personal safety, utilize conventional easy device, the toxic and harmful that overflows in the well is controlled drainage and discharging, and than present conventional way, cost is very cheap, equipment making and operation are very simple, drainage is reliable, and the safety factor height has the value of applying.
Description of drawings
Fig. 1 is the utility model well workover well head toxic and harmful drainage system structural profile schematic diagram.Among the figure, 1. valve, 2. discharging tube, 3. casing, 4. baffle plate, 5. blower cover, 6. blast fan, 7. induced duct, 8. deposit liquid.
The specific embodiment
Embodiment 1: consult Fig. 1.The utility model well workover well head toxic and harmful drainage system comprises valve 1, discharging tube 2, casing 3, baffle plate 4, blower cover 5, blast fan 6 and induced duct 7 compositions.Casing 3 is the closed box of steel plate welding, and casing 3 is a rectangular configuration.Be fixed with a discharging tube 2 in the bottom of casing 3, be connected with a valve 1 on the discharging tube 2.Deposit liquid 8 in the casing 3 can be by valve 1 and discharging tube 2 dischargings.Steam vent is arranged at the top at casing 3, in the bottom of steam vent blower cover 5 is arranged, and blower cover 5 is conical.Steam vent connects the inlet of two blast fans 6.On the wall of casing 3, be fixed with an induced duct 7.The exhaust opening of induced duct 7 is in casing 3, and the exhaust opening end of induced duct 7 is a bend pipe, angle 45 degree of bend pipe.The import of induced duct 7 is in casing 3 outsides, and the intake energy of induced duct 7 is connected with the by-pass port pipeline that is lower than the wellhead flange plane.Be fixed with a baffle plate 4 in casing 3, baffle plate 4 is vertically opposite with the exhaust opening center line of induced duct 7, can make the gas that enters in the casing 3 slow down, change direction.Be evenly distributed with diameter on the baffle plate 4 and be 8 millimeters aperture, the distance between the aperture center is 15 millimeters.
Claims (7)
1, a kind of well workover well head toxic and harmful drainage system, mainly comprise valve (1), discharging tube (2), casing (3), baffle plate (4), blast fan (6) and induced duct (7) are formed, it is characterized in that: casing (3) is the closed box of steel plate welding, be fixed with discharging tube (2) in the bottom of casing (3), be connected with valve (1) on the discharging tube (2), steam vent is arranged at the top at casing (3), steam vent connects the inlet of blast fan (6), on the wall of casing (3), be fixed with induced duct (7), the exhaust opening of induced duct (7) is in casing (3), the import of induced duct (7) is in casing (3) outside, be fixed with baffle plate (4) in casing (3), baffle plate (4) is vertically opposite with the exhaust opening of induced duct (7).
2, well workover well head toxic and harmful drainage system according to claim 1, it is characterized in that: described blast fan (6) has two.
3, well workover well head toxic and harmful drainage system according to claim 1, it is characterized in that: the exhaust opening end of described induced duct (7) is a bend pipe, and the angle of bend pipe is between 30～60 degree, and the plane of baffle plate is vertical with the bend pipe center line.
4, well workover well head toxic and harmful drainage system according to claim 1 is characterized in that: blower cover (5) is arranged in the bottom of steam vent, and described blower cover (5) is conical.
5, according to claim 1 or 2 or 3 or 4 described well workover well head toxic and harmful drainage systems, it is characterized in that: described baffle plate is evenly distributed with the hole on (4).
6, according to claim 1 or 2 or 3 or 4 described well workover well head toxic and harmful drainage systems, it is characterized in that: described casing (3) is rectangular configuration.
7, according to claim 1 or 2 or 3 or 4 described well workover well head toxic and harmful drainage systems, it is characterized in that: described casing (3) is a cylindrical structural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201097381U CN201241652Y (en) | 2008-08-07 | 2008-08-07 | Poisonous and harmful gas drainage device at well head of workover well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201097381U CN201241652Y (en) | 2008-08-07 | 2008-08-07 | Poisonous and harmful gas drainage device at well head of workover well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241652Y true CN201241652Y (en) | 2009-05-20 |
Family
ID=40714948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201097381U Expired - Lifetime CN201241652Y (en) | 2008-08-07 | 2008-08-07 | Poisonous and harmful gas drainage device at well head of workover well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241652Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016179628A1 (en) * | 2015-05-14 | 2016-11-17 | Australian Rig Construction Holdings Pty Ltd | Method and system for controlling gas flow |
-
2008
- 2008-08-07 CN CNU2008201097381U patent/CN201241652Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016179628A1 (en) * | 2015-05-14 | 2016-11-17 | Australian Rig Construction Holdings Pty Ltd | Method and system for controlling gas flow |
| AU2015394221B2 (en) * | 2015-05-14 | 2019-08-01 | Australian Rig Construction Holdings Pty Ltd | Method and system for controlling gas flow |
| US10995577B2 (en) | 2015-05-14 | 2021-05-04 | Well Equipment Solutions Holdings Pty Ltd | Method and system for controlling gas flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090520 |