CN103590784A - Blowout control leakproof wellhead safety device - Google Patents

Blowout control leakproof wellhead safety device Download PDF

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Publication number
CN103590784A
CN103590784A CN201310513322.1A CN201310513322A CN103590784A CN 103590784 A CN103590784 A CN 103590784A CN 201310513322 A CN201310513322 A CN 201310513322A CN 103590784 A CN103590784 A CN 103590784A
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China
Prior art keywords
valve
valve rod
cover
hand wheel
bearing
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CN201310513322.1A
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CN103590784B (en
Inventor
崔龙
徐东风
崔文琪
崔超
吴高
闵志成
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YANCHENG QIHANG PETROLEUM CHEMISTRY MACHINERY CO Ltd
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YANCHENG QIHANG PETROLEUM CHEMISTRY MACHINERY CO Ltd
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Abstract

The invention relates to the technical field of wellhead safety devices, in particular to a blowout control leakproof wellhead safety device. Two ends of a hand wheel rod are provided with bearings. The hand wheel rod is connected with a valve rod through a hand wheel rod pin. The outside of a bearing cap is provided with a valve rod cover. The valve rod cover is provided with a second O-shaped rubber seal ring. Both a first O-shaped rubber seal ring and a straight-through forced filling oil cup are mounted on a housing of the bearing cap. A valve rod is mounted in an inner hole of a bonnet. Valve rod stuffing is disposed between the valve rod and the bonnet. One side of the valve rod stuffing is provided with a stuffing pressure cover. The bonnet is connected with an upper combined flange body, and the connections of the bonnet and the upper combined flange body are provided with a middle hole spacer. A gate is connected with the valve rod in a threaded manner. One side of each valve seat ring is provided with a seal ring. A valve seat body is provided with a valve seat seal ring and mounted inside the upper combined flange body. The valve seat rings are disposed in a hole of a fixing plate. Two sides of the fixing plate are limited on two sides of the gate through guide support plates. The blowout control leakproof wellhead safety device is safe, energy saving, environment friendly, economical, timely, simple to operate, and higher in operating efficiency.

Description

Blowout prevention anti-leak well head safe device
Technical field:
The present invention relates to well head safe device technique field, be specifically related to a kind of blowout prevention anti-leak well head safe device.
Background technology:
Well head is the device for the production of oil, gas being formed by assembling parts such as four-way, valves, be connected with casing head, as shown in Figure 1 and Figure 2, under impact because of factors such as medium, environment in exploitation, manufacturing process, often make wellhead sealing mechanism lose the effect of sealing and cause leakage, stuck.Particularly the main control valve of well head, because bearing cut-out or the connection effect of gas well high-pressure natural gas.In production and application, and valve does not carry out in the situation of switching manipulation for a long time, once occur blow-by, stuck as easy as rolling off a log generation toxic gas, inflammable gas leak and the serious consequence of gusher, disused well occurs that above fault not only directly affects the normal operation of integral device, and the natural environments such as the crowd of perimeter zone, well site, animals, crops, river are had to great threat and potential safety hazard.For solving such accident, guarantee to produce normal operation, the normal function of restorer, the usual method that need to carry out in-situ processing is to change valve; A kind of method is to carry out kill-job.Do so on the one hand and waste time and energy, and cost is high; Well killing fluid can cause certain pollution to gas-bearing formation on the other hand, has reduced well capacity, has affected post-job output, sometimes even cause by well kill, the serious consequence of gusher.Another kind method is the valve that changes with pressure, can with pressurely change the man power and material that valve needs large (conventionally with pressure change valve once need the expense of more than 20 ten thousand yuan), and the safety factor of this operation excessive risk is not large.
Summary of the invention:
The object of this invention is to provide a kind of blowout prevention anti-leak well head safe device, it has safety, energy-conserving and environment-protective, and economy, timeliness, simple to operate, improved operating efficiency.
In order to solve the existing problem of background technology, the present invention adopts following technical scheme: it comprises O shape rubber seal 1, straight forced filling oil cup 2, stop-leak compound injection valve 3, bearing 4, flashboard 5, valve seat body 6, sealing ring 7, seat ring 8, valve seat insert 9, fixed head 10, guiding support plate 11, O shape rubber seal 2 12, valve gap 13, mesopore gasket ring 14, upper Ifold flange body 15, valve stem packing 16, gland 17, handwheel lever pin 18, valve rod 19, bearing cover 20, valve rod cover 21, hand wheel pole 22, the two ends of hand wheel pole 22 are provided with bearing 4, and the outside of bearing 4 is provided with bearing cover 20, hand wheel pole 22 is connected with valve rod 19 by handwheel lever pin 18, the arranged outside of bearing cover 20 has valve rod cover 21, and O shape rubber seal 2 12 is installed on valve rod cover 21, O shape rubber seal 1, straight forced filling oil cup 2 is installed on the shell of bearing cover 20, valve rod 19 is arranged in the endoporus of valve gap 13, valve stem packing 16 is arranged between valve rod 19 and valve gap 13, one side of valve stem packing 16 is provided with gland 17, valve gap 13 is connected with upper Ifold flange body 15, and junction is provided with mesopore gasket ring 14, flashboard 5 is threaded connection with valve rod 19, one side of seat ring 8 is respectively arranged with sealing ring 7, valve seat insert 9 is installed on valve seat body 6, valve seat body 6 is arranged on Ifold flange body 15 inside, and seat ring 8 is arranged in the hole of fixed head 10, and the both sides of fixed head 10 are limited in the both sides of flashboard 5 by the support plate 11 that leads.
Using method of the present invention is: first blowout prevention anti-leak well head safe device is substituted to conventional reduced flange and be installed on the oil pipe four-way and the position between main valve of well head, when the main valve of well head breaks down cisco unity malfunction need to change time, should first back out valve rod cover 21, then outer six sides on special opening handle are inserted in the interior hexagonal hole on hand wheel pole 22, turn clockwise the flashboard under full-gear 5 to closed condition (close after putting in place and should counterclockwise rotate 1/4~1/2 circle), cut off runner, change main valve, after replacing completes, rotate counterclockwise dedicated handle flashboard 5 unlatchings (clockwise direction rotation 1/4~1/2 circle is answered in unlatching after putting in place) are then taken off to dedicated handle, again valve rod cover 21 is tightened, whole process ends with system can be recovered normal operation.
The present invention has following beneficial effect:
One, safety: carry out selection, technique, the experiment of well head safe device in the worst situations of factor such as applying working condition condition, medium.Under low temperature and hot environment, can normally use, switch freely.In the medium of water, gas, oil, carry out low pressure and high-potting, 15 minutes leakproofs of pressurize.Through every technical data of shaft mouth test safety device repeatedly, can be adapted to all kinds of well heads at different working conditions, rapidly, effectively solve this type of security incident;
Two, energy-saving and environmental protection: cost is low, blowout prevention fast, anti-leak when well head leaks; Make well head can drop into rapidly in normal production status; Execute-in-place non-environmental-pollution;
Three, economy, timeliness: weather operation entirely, can in 5 minutes, react, in 2-6 hour, handle accident well, and well head pressure is large and small unrestricted, not only economic, practical, safety; Simple to operate, fast improved greatly operating efficiency.
Accompanying drawing explanation:
Fig. 1 is the structural representation of well head christmas tree in prior art;
Fig. 2 is the structural representation of well head reduced flange in prior art;
Fig. 3 is sectional view of the present invention;
Fig. 4 is stereogram of the present invention.
The specific embodiment:
Referring to Fig. 3 and Fig. 4, this specific embodiment adopts following technical scheme: it comprises O shape rubber seal 1, straight forced filling oil cup 2, stop-leak compound injection valve 3, bearing 4, flashboard 5, valve seat body 6, sealing ring 7, seat ring 8, valve seat insert 9, fixed head 10, guiding support plate 11, O shape rubber seal 2 12, valve gap 13, mesopore gasket ring 14, upper Ifold flange body 15, valve stem packing 16, gland 17, handwheel lever pin 18, valve rod 19, bearing cover 20, valve rod cover 21, hand wheel pole 22, the two ends of hand wheel pole 22 are provided with bearing 4, and the outside of bearing 4 is provided with bearing cover 20, hand wheel pole 22 is connected with valve rod 19 by handwheel lever pin 18, the arranged outside of bearing cover 20 has valve rod cover 21, and O shape rubber seal 2 12 is installed on valve rod cover 21, O shape rubber seal 1, straight forced filling oil cup 2 is installed on the shell of bearing cover 20, valve rod 19 is arranged in the endoporus of valve gap 13, valve stem packing 16 is arranged between valve rod 19 and valve gap 13, one side of valve stem packing 16 is provided with gland 17, valve gap 13 is connected with upper Ifold flange body 15, and junction is provided with mesopore gasket ring 14, flashboard 5 is threaded connection with valve rod 19, one side of seat ring 8 is respectively arranged with sealing ring 7, valve seat insert 9 is installed on valve seat body 6, valve seat body 6 is arranged on Ifold flange body 15 inside, and seat ring 8 is arranged in the hole of fixed head 10, and the both sides of fixed head 10 are limited in the both sides of flashboard 5 by the support plate 11 that leads.
The using method of this specific embodiment is: first blowout prevention anti-leak well head safe device is substituted to conventional reduced flange and be installed on the oil pipe four-way and the position between main valve of well head, when the main valve of well head breaks down cisco unity malfunction need to change time, should first back out valve rod cover 21, then outer six sides on special opening handle are inserted in the interior hexagonal hole on hand wheel pole 22, turn clockwise the flashboard under opening-wide state 5 to closed condition (close after putting in place and should counterclockwise rotate 1/4~1/2 circle), cut off runner, change main valve, after replacing completes, rotate counterclockwise dedicated handle flashboard 5 unlatchings (clockwise direction rotation 1/4~1/2 circle is answered in unlatching after putting in place) are then taken off to dedicated handle, again valve rod cover 21 is tightened, whole process ends with system can be recovered normal operation.
This specific embodiment adopts double-valve-seat structure, and the processing technology of valve plate, valve seat adopts supersonic spray coating spray tungsten carbide, through computer controlled grinding, makes its surface roughness be less than 0.05um, and parallelism, within the scope of 0.01mm, is guaranteed positiver sealing.It is material (75% Teflon+20% glass fiber+5% molybdenum) that valve seat insert adopts teflon, temperature has enough intensity and toughness at-46 ℃~+ 121 ℃, have more higher erosion-resisting ability, do not adopt conventional wave spring structure, avoided wave spring to rupture in deep-etching and load effect and harm that valve seal was lost efficacy.Valve rod adopts grinding machine cylindrical, guarantees sealing effectiveness and less switch moment, makes this device operating flexibility obtain sound assurance.Valve stem packing adopts tetrafluoro and acrylonitrile-butadiene rubber sulfuration one, has high strength, acidproof, anti-H 2 S, (if used on thermal production well mouth, selecting graphite as valve stem packing, to meet resistant to elevated temperatures requirement).The part of wetting surface all adopts stainless steel manufacture to form, and can meet above working condition requirement.What adopt is dark bar form of structure, thereby compact conformation is rationally reliable generally.According to the specifications and models flexible design of all kinds of well heads, make its device and well head form one.
This specific embodiment has following beneficial effect:
One, safety: carry out selection, technique, the experiment of well head safe device in the worst situations of factor such as applying working condition condition, medium.Under low temperature and hot environment, can normally use, switch freely.In the medium of water, gas, oil, carry out low pressure and high-potting, 15 minutes leakproofs of pressurize.Through every technical data of shaft mouth test safety device repeatedly, can be adapted to all kinds of well heads at different working conditions, rapidly, effectively solve this type of security incident;
Two, energy-saving and environmental protection: cost is low, blowout prevention fast, anti-leak when well head leaks; Make well head can drop into rapidly in normal production status; Execute-in-place non-environmental-pollution;
Three, economy, timeliness: weather operation entirely, can in 5 minutes, react, in 2-6 hour, handle accident well, and well head pressure is large and small unrestricted, not only economic, practical, safety; Simple to operate, fast improved greatly operating efficiency.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (2)

1. blowout prevention anti-leak well head safe device, is characterized in that it comprises O shape rubber seal one (1), straight forced filling oil cup (2), stop-leak compound injection valve (3), bearing (4), flashboard (5), valve seat body (6), sealing ring (7), seat ring (8), valve seat insert (9), fixed head (10), guiding support plate (11), O shape rubber seal two (12), valve gap (13), mesopore gasket ring (14), upper Ifold flange body (15), valve stem packing (16), gland (17), handwheel lever pin (18), valve rod (19), bearing cover (20), valve rod cover (21), hand wheel pole (22), the two ends of hand wheel pole (22) are provided with bearing (4), the outside of bearing (4) is provided with bearing cover (20), hand wheel pole (22) is connected with valve rod (19) by handwheel lever pin (18), the arranged outside of bearing cover (20) has valve rod cover (21), O shape rubber seal two (12) is installed, O shape rubber seal one (1) on valve rod cover (21), straight forced filling oil cup (2) is installed on the shell of bearing cover (20), valve rod (19) is arranged in the endoporus of valve gap (13), valve stem packing (16) is arranged between valve rod (19) and valve gap (13), one side of valve stem packing (16) is provided with gland (17), valve gap (13) is connected with upper Ifold flange body (15), and junction is provided with mesopore gasket ring (14), flashboard (5) is threaded connection with valve rod (19), one side of seat ring (8) is provided with sealing ring (7), valve seat insert (9) is installed on valve seat body (6), valve seat body (6) is arranged on Ifold flange body (15) inside, seat ring (8) is arranged in the hole of fixed head (10), the both sides of fixed head (10) are limited in the both sides of flashboard (5) by the support plate that leads (11).
2. blowout prevention anti-leak well head safe device according to claim 1, the using method it is characterized in that is: first blowout prevention anti-leak well head safe device is substituted to conventional reduced flange and be installed on the oil pipe four-way and the position between main valve of well head, when the main valve of well head breaks down cisco unity malfunction need to change time, should first back out valve rod cover (21), then outer six sides on special opening handle are inserted in the interior hexagonal hole on hand wheel pole (22), turn clockwise the flashboard under full-gear (5) to closed condition, cut off runner, change main valve, after replacing completes, rotating counterclockwise dedicated handle opens flashboard (5), then take off dedicated handle, again valve rod cover (21) is tightened, whole process ends with system can be recovered normal operation.
CN201310513322.1A 2013-10-28 2013-10-28 Blowout control leakproof wellhead safety device Active CN103590784B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113027349A (en) * 2021-04-29 2021-06-25 盐城市大冈石油工具厂有限责任公司 Multifunctional polish rod converter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071368B (en) * 2018-01-16 2020-06-12 吉林省嘉元绿宝环卫设备股份有限公司 Efficient energy-saving natural gas extraction equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5454547A (en) * 1993-06-14 1995-10-03 Valve Sales Company, Inc. Sleeved seal for a valve
CN201013324Y (en) * 2007-03-07 2008-01-30 中国石油天然气股份有限公司 Natural gas well stabilization production allocator
CN201695994U (en) * 2010-06-09 2011-01-05 濮阳圣元火炬工程有限公司 Oil extraction metering manifold lower end metering valve
CN201802364U (en) * 2010-09-01 2011-04-20 中国石油天然气股份有限公司 Adjustable natural gas jet and drainage device
CN202117606U (en) * 2011-06-14 2012-01-18 刘庆梅 Blowout-preventing oil pipe head for non-well-killing valve replacing
CN102733772A (en) * 2012-07-12 2012-10-17 刘庆梅 Christmas tree of tubing head for borehole operation without killing well
CN203603842U (en) * 2013-10-28 2014-05-21 盐城市琪航石油机械有限公司 Blowout-prevention and leakage prevention well mouth safety device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5454547A (en) * 1993-06-14 1995-10-03 Valve Sales Company, Inc. Sleeved seal for a valve
CN201013324Y (en) * 2007-03-07 2008-01-30 中国石油天然气股份有限公司 Natural gas well stabilization production allocator
CN201695994U (en) * 2010-06-09 2011-01-05 濮阳圣元火炬工程有限公司 Oil extraction metering manifold lower end metering valve
CN201802364U (en) * 2010-09-01 2011-04-20 中国石油天然气股份有限公司 Adjustable natural gas jet and drainage device
CN202117606U (en) * 2011-06-14 2012-01-18 刘庆梅 Blowout-preventing oil pipe head for non-well-killing valve replacing
CN102733772A (en) * 2012-07-12 2012-10-17 刘庆梅 Christmas tree of tubing head for borehole operation without killing well
CN203603842U (en) * 2013-10-28 2014-05-21 盐城市琪航石油机械有限公司 Blowout-prevention and leakage prevention well mouth safety device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113027349A (en) * 2021-04-29 2021-06-25 盐城市大冈石油工具厂有限责任公司 Multifunctional polish rod converter

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Denomination of invention: Blowout control leakproof wellhead safety device

Effective date of registration: 20190218

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