CN103899274A - Plate type drain valve for casing pipe of drilling platform - Google Patents
Plate type drain valve for casing pipe of drilling platform Download PDFInfo
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- CN103899274A CN103899274A CN201410144560.4A CN201410144560A CN103899274A CN 103899274 A CN103899274 A CN 103899274A CN 201410144560 A CN201410144560 A CN 201410144560A CN 103899274 A CN103899274 A CN 103899274A
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- valve
- sleeve pipe
- plate type
- runner
- casing pipe
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Abstract
The invention discloses a plate type drain valve for a casing pipe of a drilling platform. The plate type drain valve for the casing pipe of the drilling platform is used for draining liquid and depressurizing inside the casing pipe and comprises a cylindrical valve body, a valve cavity, a runner, a valve plate, lugs, a lifting hook and cups, wherein the valve cavity is arranged on the upper side of the inside of the valve body, the runner longitudinally runs through the upper side and the lower side of the valve body and the valve cavity, the valve plate upwardly openable is arranged between the bottom of the valve cavity and the runner, the lugs are arranged on the top of the valve body, ends of the hood are connected with the lugs, the cups are circularly arranged in the middle of the valve body, and the valve plate is hinged to the bottom of the valve cavity via a pin with a reset spring sleeved thereon. The drain valve for the casing pipe can sink to the position slightly above a pre-cut position along the inside of the casing pipe, the runner is closed and sealed by the valve plate, the cups cling to the inner wall of the casing pipe, liquid in the casing pipe is separated into two parts, by this time, jetting can be avoided in the process of cutting the casing pipe, the casing pipe can be quickly cut and cutting efficiency is greatly improved.
Description
Technical field
The present invention relates to marine oil gas field offshore boring island sleeve pipe disassembling technology, relate in particular to a kind of offshore boring island sleeve pipe plate type tapping valve.
Background technology
In the self-elevating drilling platform operation process of ocean, lower complete one deck sleeve pipe cemented the well rear (sleeve pipe exceeds turntable surface 1 ~ 1.5m), the connection of taking increased pipe and casing head apart, above carries blowout preventer set and the good hanging device for slips casing of increased pipe certain distance seat.Before the next casing head of installation, need more than front one deck CHF, cut position this layer of sleeve pipe (slightly cutting) and throw away otch to turntable surface and send into sleeve pipe by about 0.4m, remove after blowout preventer set and increased pipe, next casing head is installed after again cutting (essence is cut) sleeve pipe according to design size.
In the time of first cutting (slightly cutting) sleeve pipe, seawater or well slurry in sleeve pipe, are full of, sleeve pipe cutting position is apart from the have an appointment height (take producing well as example) of 25 meters of turntable surface, calculate by the seawater that is full of 1.03g/cm3 in sleeve pipe, liquid column hydrostatic pressure 0.25Mpa, in the time using burning torch Casing-Cutting, seawater sprays fast from incision site under hydrostatic column pressure difference effect, often causes burning torch to extinguish.Under normal circumstances, need to cut osculum and discharge after cover liquid in pipe, then completing and slightly cut operation.Field operation proves, completes 13-3/8, and " sleeve pipe cutting needs approximately 1 hour consuming time, 9-5/8, and " sleeve pipe cutting needs approximately 40 minutes consuming time.
For improving operation timeliness, field operation personnel also once considered by being lowered to a cylindrical drill bar or drill collar, the liquid in sleeve pipe to be discharged, although can cross-operation, need the frequent elevator of changing, increase many workloads, actual effect is also bad.
Summary of the invention
For the deficiencies in the prior art, a kind ofly before Casing-Cutting, more than sleeve pipe otch liquid is discharged and can be prevented that liquid in pipe ejection from extinguishing the offshore boring island sleeve pipe plate type tapping valve of burning torch thereby the technical problem to be solved in the present invention is to provide.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of offshore boring island sleeve pipe plate type tapping valve, for inside pipe casing discharge opeing decompression, described offshore boring island sleeve pipe plate type tapping valve comprises columniform valve body, be positioned at the valve pocket of valve inner upside, longitudinally connect the runner of valve body upper and lower sides and described valve pocket, be located at valve plate between valve pocket bottom and runner and upwardly-openable, be located at the hanger at described valve body top, the suspension hook that end is connected with described hanger, the leather cup arranging around described valve body middle part, described valve plate is articulated with described valve pocket bottom by being arranged with the pin of returning spring.
One as the technical scheme of offshore boring island sleeve pipe plate type tapping valve of the present invention is improved, and described runner be circle, and described valve plate is the circular cover that can cover runner mouth completely.
One as the technical scheme of offshore boring island sleeve pipe plate type tapping valve of the present invention is improved, and the height of described valve pocket is greater than its diameter.
One as the technical scheme of offshore boring island sleeve pipe plate type tapping valve of the present invention is improved, and described leather cup is positioned at position on the lower side, valve body middle part.
One as the technical scheme of offshore boring island sleeve pipe plate type tapping valve of the present invention is improved, and described leather cup the rim of a bowl upward.
One as the technical scheme of offshore boring island sleeve pipe plate type tapping valve of the present invention is improved, and it is T font or criss-cross cavity structure that described valve pocket and described runner constitute cross section.
Beneficial effect of the present invention is: columniform sleeve pipe tapping valve can be put into sleeve pipe from the open top of sleeve pipe, sink along sleeve pipe, in process, liquid or slurries arrive precut position location on the upper side from runner through sleeve pipe tapping valve can be moved down smoothly, sleeve pipe tapping valve stops sinking, thereby valve plate is closed closed flow, then upwards mention by drag cable, leather cup touch internal surface of sleeve pipe, thereby liquid in pipe or liquid slurry are separated into two parts, the now sleeve pipe of Casing-Cutting tapping valve position downside, owing to there is no inside water pressure, can not spray, can fly-cutting sleeve pipe, greatly improve cutting efficiency.After cutting an osculum open, just can continue to mention sleeve pipe tapping valve, by the emptying rate of liquid of upside in pipe.Sleeve pipe tapping valve is wherein simple in structure, and cost is low; Can avoid burning torch to spray rapidly the problem of being extinguished because of liquid cutting hole place; Improve the efficiency of Casing-Cutting operation; Easy to operate, can extensive use in oilfield drilling operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of offshore boring island sleeve pipe plate type of the present invention tapping valve embodiment.
Fig. 2 is the partial structurtes schematic diagram that uses the offshore boring island of tapping valve shown in Fig. 1.
The specific embodiment
Further illustrate the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of offshore boring island sleeve pipe plate type of the present invention tapping valve, for inside pipe casing discharge opeing decompression, described offshore boring island sleeve pipe plate type tapping valve 20 comprises columniform valve body 21, be positioned at the valve pocket 22 of valve body 21 upper inside, longitudinally connect the runner 23 of valve body 21 upper and lower sides and described valve pocket 22, be located at valve plate 24 between valve pocket 22 bottoms and runner 23 and upwardly-openable, be located at the hanger 25 at described valve body 21 tops, the suspension hook 26 that end is connected with described hanger 25, the leather cup 28 arranging around described valve body middle part, described valve plate 24 is articulated with described valve pocket 22 bottoms by being arranged with the pin 29 of returning spring.Simultaneously with reference to figure 2, columniform sleeve pipe tapping valve 20 can be put into sleeve pipe 11 from the open top of sleeve pipe 11, sink along sleeve pipe 11, in process, liquid or slurries arrive precut position location on the upper side from runner through sleeve pipe tapping valve can be moved down smoothly, sleeve pipe tapping valve 20 stops sinking, thereby valve plate 24 is closed closed flow 23, then upwards mention by drag cable 19, leather cup 28 touch internal surface of sleeve pipe, thereby liquid in pipe or liquid slurry are separated into two parts, the now sleeve pipe 11 of Casing-Cutting tapping valve position downside, owing to there is no inside water pressure, can not spray, can fly-cutting sleeve pipe, greatly improve cutting efficiency.Cut air after an osculum open and just can infiltrate from osculum, thereby just can continue to mention sleeve pipe tapping valve and the lifting that can not hinder because of negative pressure valve, emptying rate of liquid that will the interior upside of pipe.Sleeve pipe tapping valve is wherein simple in structure, and cost is low; Can avoid burning torch to spray rapidly the problem of being extinguished because of liquid cutting hole place; Improve the efficiency of Casing-Cutting operation; Easy to operate, can extensive use in oilfield drilling operation.
More preferably, described runner 23 is circular, thereby adapt to sleeve-shaped and provide larger sectional area so that the liquid of downside enters the top of valve smoothly by runner, described valve plate 24 is the circular cover that can cover runner mouth completely, thereby while carrying, cover runner mouth and cut off liquid or the slurries of upper and lower sides on valve, smoothly the water in sleeve pipe or slurries are discharged.
More preferably, the height of described valve pocket 22 is greater than its diameter, makes valve plate 24 have enough spaces of digging, and is convenient to valve plate 24 and opens the upside that makes the liquid of below enter swimmingly valve by the runner 23 of valve body 21 completely.
More preferably, described leather cup 28 is positioned at valve body 21 positions on the lower side, middle part, is convenient on valve body 21, put in the process rising keep balance.
More preferably, described leather cup 28 the rims of a bowl, stop liquid from the gap location seepage between valve body periphery and sleeve pipe upward in valve body 21 uphill process.
More preferably, it is T font or criss-cross cavity structure that described valve pocket 22 constitutes cross section with described runner 23, is convenient to valve body and keeps vertical state to sink.
In the time of self-elevating drilling platform Casing-Cutting, use of the present invention a kind of for offshore boring island sleeve pipe plate type tapping valve time, concrete operations following (take the operation of 311.1mm well section as example):
1. bore 311.1mm well and pulled out of hole;
2. be lowered to 244.5mm sleeve pipe and well cementing operation;
3. dismantle from 346.1mm four-way junction of casing top, mention rising sleeve pipe 11 and blowout preventer set 18;
4. 244.5mm casing slip is installed;
5. utilize cutter on sleeve pipe, to cut place's aperture at well head chain-wales 10 places;
6. utilize tourist bus by pull rope 19, tapping valve to be lowered in sleeve pipe to cutting position, above carry tapping valve to sleeve pipe open top position;
7. on tapping valve, carry in process, just cut sleeve pipe;
8. rig floor gets rid of lower scarfing and sends into above sleeve pipe;
9. remove rising sleeve pipe and blowout preventer set 18, essence is cut polishing sleeve pipe, and lower one deck casing head is installed.
Above disclosed is only the preferred embodiments of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the present patent application the scope of the claims, still belongs to the scope that the present invention is contained.
Claims (6)
1. an offshore boring island sleeve pipe plate type tapping valve, for inside pipe casing discharge opeing decompression, it is characterized in that: described offshore boring island sleeve pipe plate type tapping valve comprise columniform valve body, the valve pocket of valve inner upside, longitudinally connect valve body upper and lower sides and described valve pocket runner, be located at suspension hook that valve plate, the hanger of being located at described valve body top, end between valve pocket bottom and runner and upwardly-openable be connected with described hanger, leather cup around the middle part setting of described valve body, described valve plate is articulated with bottom described valve pocket by being arranged with the pin of returning spring.
2. offshore boring island sleeve pipe plate type tapping valve according to claim 1, is characterized in that: described runner is for circular, and described valve plate is the circular cover that can cover runner mouth completely.
3. offshore boring island sleeve pipe plate type tapping valve according to claim 1, is characterized in that: the height of described valve pocket is greater than its diameter.
4. offshore boring island sleeve pipe plate type tapping valve according to claim 1, is characterized in that: described leather cup is positioned at position on the lower side, valve body middle part.
5. offshore boring island sleeve pipe plate type tapping valve according to claim 1, is characterized in that: described leather cup the rim of a bowl upward.
6. offshore boring island sleeve pipe plate type tapping valve according to claim 1, is characterized in that: it is T font or criss-cross cavity structure that described valve pocket and described runner constitute cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410144560.4A CN103899274A (en) | 2014-04-11 | 2014-04-11 | Plate type drain valve for casing pipe of drilling platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410144560.4A CN103899274A (en) | 2014-04-11 | 2014-04-11 | Plate type drain valve for casing pipe of drilling platform |
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| Publication Number | Publication Date |
|---|---|
| CN103899274A true CN103899274A (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410144560.4A Pending CN103899274A (en) | 2014-04-11 | 2014-04-11 | Plate type drain valve for casing pipe of drilling platform |
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| CN (1) | CN103899274A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403431A (en) * | 2015-12-11 | 2016-03-16 | 苏州国环环境检测有限公司 | A water sampling device capable of automatic sealing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955623A (en) * | 1974-04-22 | 1976-05-11 | Schlumberger Technology Corporation | Subsea control valve apparatus |
| CN201057019Y (en) * | 2007-07-12 | 2008-05-07 | 扬州诚创科技有限公司 | Slurry anti-splash valve of square shaft |
| CN103016748A (en) * | 2012-11-30 | 2013-04-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-seal type lift valve for piston volume tube |
| CN203783527U (en) * | 2014-04-11 | 2014-08-20 | 中国海洋石油总公司 | Plate type liquid draining valve for casing pipe of drilling platform |
-
2014
- 2014-04-11 CN CN201410144560.4A patent/CN103899274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955623A (en) * | 1974-04-22 | 1976-05-11 | Schlumberger Technology Corporation | Subsea control valve apparatus |
| CN201057019Y (en) * | 2007-07-12 | 2008-05-07 | 扬州诚创科技有限公司 | Slurry anti-splash valve of square shaft |
| CN103016748A (en) * | 2012-11-30 | 2013-04-03 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-seal type lift valve for piston volume tube |
| CN203783527U (en) * | 2014-04-11 | 2014-08-20 | 中国海洋石油总公司 | Plate type liquid draining valve for casing pipe of drilling platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403431A (en) * | 2015-12-11 | 2016-03-16 | 苏州国环环境检测有限公司 | A water sampling device capable of automatic sealing |
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Application publication date: 20140702 |
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