CN102251754A - Blowout control tubing head with non-well-killing valve replacement - Google Patents
Blowout control tubing head with non-well-killing valve replacement Download PDFInfo
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- CN102251754A CN102251754A CN2011101576077A CN201110157607A CN102251754A CN 102251754 A CN102251754 A CN 102251754A CN 2011101576077 A CN2011101576077 A CN 2011101576077A CN 201110157607 A CN201110157607 A CN 201110157607A CN 102251754 A CN102251754 A CN 102251754A
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- valve
- tubing head
- spool
- valve rod
- kill
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Abstract
The invention discloses a blowout control tubing head with non-well-killing valve replacement, and the blowout control tubing head comprises a tubing head body, wherein a front kill valve and a rear kill valve are mounted on the tubing head body, a gate valve is mounted in the inner cavity of the tubing head body, the upper end of the tubing head body is hermetically connected with the lower end of a crossover flange, the upper end of the crossover flange is hermetically connected with a Christmas tree valve, a valve seat is mounted at the upper part of the inner cavity of the crossover flange, a support seat is mounted at the lower part of the inner cavity of the crossover flange, a valve core is mounted between the valve seat and the support seat, valve core is connected with one end of a valve rod, the other end of the valve rod penetrates through the side wall of the crossover flange, and a sealing mechanism is arranged between the valve rod and the side wall of the crossover flange. The valve core is spherical and is provided with a center hole. The blowout control tubing head is simple in structure and can not only be used as the tubing head of a Christmas tree but also be used as a blowout preventer; when downhole operation is performed for running and pulling a tubing, accidents caused by blowout can be effectively and reliably prevented.
Description
One. technical field: the present invention relates to a kind of oil exploration equipment, particularly relate to a kind of not kill-job and change valve blowout preventing tubing head.
Two. background technology: existing production wellhead does not possess the blowout prevention function, in order to prevent blowout, need a blowout preventer be installed on the top of tubing head when carrying out underground work, and blowout preventer itself is with regard to tall and big heaviness, add tubing head, its overall height is about two meters, in addition during underground work, also must build a platform and just can carry out work, if blowout simultaneously just in case take place, because of the too high difficulty of speedily carrying out rescue work of well head in not only inconvenience but also dangerous, manufacturing cost is also big, and structure is more complicated also.
Three. summary of the invention:
Technical problem to be solved by this invention is: overcome the deficiencies in the prior art, provide a kind of not kill-job simple in structure, easy to operate, that blowout prevention is effective to change valve blowout preventing tubing head.
Technical scheme of the present invention is: valve blowout preventing tubing head is changed in a kind of not kill-job, contain the tubing head body, kill valve and back kill valve before being equipped with on the described tubing head body, in the described tubing head chamber body gate valve is installed, described tubing head body upper end is connected with the lower end of crossover flange is sealed, described crossover flange upper end is connected with production tree valve seal formula, described crossover flange inner chamber top is equipped with valve seat, its inner chamber bottom is equipped with supporting seat, between described valve seat and the supporting seat spool is installed, described spool is connected with an end of valve rod, the described valve rod other end runs through the sidewall of described crossover flange and goes out, and is provided with sealing mechanism between described valve rod and the described crossover flange sidewall.
Described spool is for spherical and be provided with a centre bore, the installation direction of described valve rod and described centre bore that direction is set is vertical mutually.
The spool of described gate valve is a two halves formula structure, constitute by left spool and right spool, between described left spool and right spool and the oil pipe sealing ring is installed, described oil pipe upper end is connected with the tubing hanger of installation in the described tubing head body, described left spool is connected with an end of left valve rod by pin, the other end of described left valve rod runs through the left side wall of described tubing head body and goes out, described right spool is connected with an end of right valve rod by pin, the other end of described right valve rod runs through the right side wall of described tubing head body and goes out, and is provided with sealing mechanism respectively between described left valve rod and the described tubing head body left side wall and between described right valve rod and the described tubing head body right side wall.
Described left spool and right spool upper end is provided with gland, and its lower end is provided with support set, is provided with fixed cover below the described support set; Described left valve rod outer end is connected with right hydraulic actuator with left hydraulic actuator respectively with right valve rod outer end.
Described fixed cover below is staggeredly equipped with two secondary seal circles and secondary seal circle positioning sleeve respectively.
The invention has the beneficial effects as follows:
1, the present invention becomes a complete machine with the device that original tubing head and preventer link together, structurally unite two into one, thereby make simple and compact for structure, it can be as the tubing head of production tree, again can be as preventer, thereby practical, in the accident of carrying out preventing effectively reliably when underground work removes oil pipe causing because of blowout.
2, the present invention utilizes the technology of tubing head body top crossover flange to change, make it become the hydrocarbon stratum pressure that effectively to control or to close the oil pipe endoporus under the more condition of cost not increasing, and it is simple in structure, practical, safe and reliable, realized the multifunctional application of product.Do not need kill-job when changeing any valve of production tree, this has just saved the kill-job expense, and particularly its effect is apparent especially when changing with first valve that crossover flange top is connected.
3, in the crossover flange of the present invention spool and valve seat are set, spool is connected with valve rod, rotation valve rod can make valve core rotation, thereby make the interior bore closure of crossover flange or open, easy to operate, in addition, spool adopts spherical structure, be convenient to rotation, reduce rotary resistance, reduce the labour intensity of switch spool.
4, gate valve of the present invention adopts hydraulic actuator, and is convenient and swift and operate steadily, when just in case when blowout occurring operating personnel can carry out the gate valve shutoff operation away from well head, safe.
5, the present invention is easy to make and produce, raw materials consumption is low, thereby manufacturing cost and use cost have been reduced, be convenient to promotion and implementation, in addition, the present invention is simple and compact for structure, working environment safety, avoided staff's ascend operation, it is applied widely, has good economic benefit after the popularization.
Four. description of drawings:
Fig. 1 changes the outline drawing of valve blowout preventing tubing head for not kill-job;
Fig. 2 changes the sectional structure chart of valve blowout preventing tubing head for not kill-job shown in Figure 1.
Five. the specific embodiment:
Embodiment: referring to Fig. 1-Fig. 2, among the figure, 1-tubing head body, 2-left side spool, the right spool of 3-, 4-left side valve rod, the right valve rod of 5-, 6-gland, 7-pin, the 8-sealing ring, 9-support set, 10-fixed cover, 11-secondary seal circle, 12-secondary seal positioning sleeve, 13-tubing hanger, the 14-crossover flange, 15-spool, 16-valve rod, the 17-supporting seat, 18-left side hydraulic actuator, the right hydraulic actuator of 19-, kill valve before the 20-through hole, 21-, kill valve behind the 22-, the 23-sealing ring, the 24-bolt, 25-valve seat, 26-production tree valve.
Not kill-job is changed valve blowout preventing tubing head and is contained tubing head body 1, wherein, kill valve 21 and back kill valve 22 before being separately installed with on the tubing head body 1 (tubing head body 1 inner chamber by through hole 20 and preceding kill valve 21 and back kill valve 22 then be in communication with the outside), in tubing head body 1 inner chamber gate valve is installed, in tubing head body 1 inner chamber tubing hanger 13 is installed, tubing head body 1 upper end is connected with the lower end of crossover flange 14 is sealed, crossover flange 14 upper ends and 26 sealed connections of production tree valve, crossover flange 14 inner chamber tops are equipped with valve seat 25, its inner chamber bottom is equipped with supporting seat 17, between valve seat 25 and the supporting seat 17 spool 15 is installed, spool 15 is connected with an end of valve rod 16, valve rod 16 other ends run through the sidewall of crossover flange 14 and go out, and are provided with sealing mechanism between valve rod 16 and crossover flange 14 sidewalls.
Spool 15 is for spherical and be provided with a centre bore, the installation direction of valve rod 16 and centre bore that direction is set is vertical mutually.
The spool of gate valve is a two halves formula structure, constitute by left spool 2 and right spool 3, between the oil pipe of left side spool 2 and right spool 3 and tubing hanger 13 lower ends sealing ring 8 is installed, left side spool 2 is connected with an end of left valve rod 4 by pin 7, the other end of left side valve rod 4 runs through the left side wall of tubing head body 1 and goes out, right spool 3 is connected with an end of right valve rod 5 by pin, the other end of right valve rod 5 runs through the right side wall of tubing head body 1 and goes out, and is provided with sealing mechanism respectively between left valve rod 4 and tubing head body 1 left side wall and between right valve rod 5 and tubing head body 1 right side wall.A left side spool 2 and right spool 3 upper ends are provided with gland 6, and its lower end is provided with support set 9, are provided with fixed cover 10 below the support set 9; Valve rod 4 outer ends, a left side are connected with right hydraulic actuator 19 with left hydraulic actuator 18 respectively with right valve rod 5 outer ends.
Fixed cover 10 belows are staggeredly equipped with two secondary seal circles 11 and secondary seal circle positioning sleeve 12 respectively.
During normal the oil recovery, adjust left valve rod 4 and right valve rod 5 make between left spool 2 and right spool 3 and the oil pipe gapped, kill valve 21 and back kill valve 22 before closing this moment.When blowout takes place, adjusting left valve rod 4 and right valve rod 5 makes between left spool 2 and right spool 3 and the oil pipe and holds tightly, kill valve 21 and back kill valve 22 before opening this moment, the oil gas of shaft bottom eruption can be guided outer wellhead safety vent device into by preceding kill valve 21 and back kill valve 22, or inject in well by preceding kill valve 21 and back kill valve 22 and to seal mortar admittedly, well is pushed down, thus the generation of prevention blowout.
When arbitrary production tree valve 26 leaks, operating valve lever 16 rotates spool 15, thereby the inner chamber of crossover flange 14 is sealed, realize non-well killing change production tree valve 26, this has just saved the kill-job expense, and particularly its effect is apparent especially when changing with first production tree valve 26 that adpting flange 14 tops are connected.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. valve blowout preventing tubing head is changed in a not kill-job, contain the tubing head body, kill valve and back kill valve before being equipped with on the described tubing head body, in the described tubing head chamber body gate valve is installed, it is characterized in that: described tubing head body upper end is connected with the lower end of crossover flange is sealed, described crossover flange upper end is connected with production tree valve seal formula, described crossover flange inner chamber top is equipped with valve seat, its inner chamber bottom is equipped with supporting seat, between described valve seat and the supporting seat spool is installed, described spool is connected with an end of valve rod, the described valve rod other end runs through the sidewall of described crossover flange and goes out, and is provided with sealing mechanism between described valve rod and the described crossover flange sidewall.
2. valve blowout preventing tubing head is changed in not kill-job according to claim 1, it is characterized in that: described spool is for spherical and be provided with a centre bore, the installation direction of described valve rod and described centre bore that direction is set is vertical mutually.
3. valve blowout preventing tubing head is changed in not kill-job according to claim 1 and 2, it is characterized in that: the spool of described gate valve is a two halves formula structure, constitute by left spool and right spool, between described left spool and right spool and the oil pipe sealing ring is installed, described oil pipe upper end is connected with the tubing hanger of installation in the described tubing head body, described left spool is connected with an end of left valve rod by pin, the other end of described left valve rod runs through the left side wall of described tubing head body and goes out, described right spool is connected with an end of right valve rod by pin, the other end of described right valve rod runs through the right side wall of described tubing head body and goes out, and is provided with sealing mechanism respectively between described left valve rod and the described tubing head body left side wall and between described right valve rod and the described tubing head body right side wall.
4. valve blowout preventing tubing head is changed in not kill-job according to claim 3, it is characterized in that: described left spool and right spool upper end is provided with gland, and its lower end is provided with support set, is provided with fixed cover below the described support set; Described left valve rod outer end is connected with right hydraulic actuator with left hydraulic actuator respectively with right valve rod outer end.
5. valve blowout preventing tubing head is changed in not kill-job according to claim 4, it is characterized in that: described fixed cover below is staggeredly equipped with two secondary seal circles and secondary seal circle positioning sleeve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110157607.7A CN102251754B (en) | 2011-06-14 | 2011-06-14 | Blowout control tubing head with non-well-killing valve replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110157607.7A CN102251754B (en) | 2011-06-14 | 2011-06-14 | Blowout control tubing head with non-well-killing valve replacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102251754A true CN102251754A (en) | 2011-11-23 |
| CN102251754B CN102251754B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110157607.7A Expired - Fee Related CN102251754B (en) | 2011-06-14 | 2011-06-14 | Blowout control tubing head with non-well-killing valve replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102251754B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022016A (en) * | 2019-11-22 | 2020-04-17 | 中国石油天然气集团有限公司 | Hydraulic fracturing and production wellhead device and using method thereof |
| CN111561290A (en) * | 2020-06-17 | 2020-08-21 | 山东东山矿业有限责任公司株柏煤矿 | Ordovician-ash-water-hole construction system for tancotta fracture zone associated steeply-inclined coal seam |
| CN113431521A (en) * | 2021-08-04 | 2021-09-24 | 黄燕平 | Equipment for replacing oil well wellhead back pressure valve in oil exploitation |
Citations (10)
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|---|---|---|---|---|
| CN2132889Y (en) * | 1992-03-13 | 1993-05-12 | 范自新 | Integrally-flanged ball valve |
| CN2474837Y (en) * | 2001-04-23 | 2002-01-30 | 龚仁荣 | High temperature flange ball valve |
| CN2639634Y (en) * | 2003-09-17 | 2004-09-08 | 黄光文 | Integral flange ball valve |
| CN2816339Y (en) * | 2005-06-20 | 2006-09-13 | 张伟斌 | Well controlled blowout-proof device |
| US7163064B2 (en) * | 2004-09-20 | 2007-01-16 | Devin International, Inc. | Surface flow valve and method |
| CN2881079Y (en) * | 2005-11-18 | 2007-03-21 | 刘庆梅 | Blowout prevention oil extraction tree |
| CN2906048Y (en) * | 2006-06-27 | 2007-05-30 | 陈业民 | Blowout prevention ball valve in well head |
| CN200940463Y (en) * | 2006-08-15 | 2007-08-29 | 丁元广 | Full seal device for repairing well |
| CN102071908A (en) * | 2010-12-16 | 2011-05-25 | 张跃 | Anti-blowout control valve |
| CN202117606U (en) * | 2011-06-14 | 2012-01-18 | 刘庆梅 | Blowout-preventing oil pipe head for non-well-killing valve replacing |
-
2011
- 2011-06-14 CN CN201110157607.7A patent/CN102251754B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132889Y (en) * | 1992-03-13 | 1993-05-12 | 范自新 | Integrally-flanged ball valve |
| CN2474837Y (en) * | 2001-04-23 | 2002-01-30 | 龚仁荣 | High temperature flange ball valve |
| CN2639634Y (en) * | 2003-09-17 | 2004-09-08 | 黄光文 | Integral flange ball valve |
| US7163064B2 (en) * | 2004-09-20 | 2007-01-16 | Devin International, Inc. | Surface flow valve and method |
| CN2816339Y (en) * | 2005-06-20 | 2006-09-13 | 张伟斌 | Well controlled blowout-proof device |
| CN2881079Y (en) * | 2005-11-18 | 2007-03-21 | 刘庆梅 | Blowout prevention oil extraction tree |
| CN2906048Y (en) * | 2006-06-27 | 2007-05-30 | 陈业民 | Blowout prevention ball valve in well head |
| CN200940463Y (en) * | 2006-08-15 | 2007-08-29 | 丁元广 | Full seal device for repairing well |
| CN102071908A (en) * | 2010-12-16 | 2011-05-25 | 张跃 | Anti-blowout control valve |
| CN202117606U (en) * | 2011-06-14 | 2012-01-18 | 刘庆梅 | Blowout-preventing oil pipe head for non-well-killing valve replacing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022016A (en) * | 2019-11-22 | 2020-04-17 | 中国石油天然气集团有限公司 | Hydraulic fracturing and production wellhead device and using method thereof |
| CN111561290A (en) * | 2020-06-17 | 2020-08-21 | 山东东山矿业有限责任公司株柏煤矿 | Ordovician-ash-water-hole construction system for tancotta fracture zone associated steeply-inclined coal seam |
| CN113431521A (en) * | 2021-08-04 | 2021-09-24 | 黄燕平 | Equipment for replacing oil well wellhead back pressure valve in oil exploitation |
| CN113431521B (en) * | 2021-08-04 | 2022-11-15 | 濮阳市宝利通石油机械有限公司 | Equipment for replacing oil well wellhead back pressure valve in oil exploitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102251754B (en) | 2015-05-27 |
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Granted publication date: 20150527 |
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| CF01 | Termination of patent right due to non-payment of annual fee |