CN202788722U - A blowout prevention tool string for a pressurized energy storage workover rig - Google Patents
A blowout prevention tool string for a pressurized energy storage workover rig Download PDFInfo
- Publication number
- CN202788722U CN202788722U CN 201220449087 CN201220449087U CN202788722U CN 202788722 U CN202788722 U CN 202788722U CN 201220449087 CN201220449087 CN 201220449087 CN 201220449087 U CN201220449087 U CN 201220449087U CN 202788722 U CN202788722 U CN 202788722U
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- Prior art keywords
- blowout preventer
- tool string
- side door
- preventer
- seal
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- Expired - Fee Related
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- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 238000004146 energy storage Methods 0.000 title claims abstract 13
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 210000002445 nipple Anatomy 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims 1
- 238000013022 venting Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010008 shearing Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000010865 sewage Substances 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 39
- 239000012530 fluid Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a blowout prevention tool string of pressure energy storage workover rig used in the petroleum industry, which is matched with the pressure energy storage workover rig for use. The tool string comprises a four-ram blowout preventer, a shearing blowout preventer, a balancing device, an emptying device and a double-ram blowout preventer, wherein the emptying device is connected with a sewage discharge pipeline. The tool string is sequentially connected with a rotating mechanism, a manual centralizer, a four-ram blowout preventer, a connecting platform short section, a shearing blowout preventer, an annular blowout preventer, a lifting short section, a balancing device, an emptying device and a double-ram blowout preventer from bottom to top, one end of a balancing pipeline is connected with the balancing device, and the other end of the balancing pipeline is connected with the rotating mechanism. The rotating mechanism can align the tool string with the wellhead at any angle. When the manual centralizer is used for lowering a tubular column, the tubular column can be righted to the center of a well mouth, and the anti-blocking effect is achieved. The secondary sealing mechanism is arranged on the blowout preventer, so that the operation is convenient, the environmental pollution can be reduced, the service life of equipment is prolonged, and the production cost is reduced.
Description
Technical field
The utility model relates to the well workover control appliance with pressure of oil well, and particularly a kind of energy-storing workover rig jet-preventing tool string with pressure, be used in conjunction with energy-storing workover rig with pressure.
Background technology
Well workover jet-preventing tool string with pressure is got up by various jet-preventing tools connection successively, and different types of preventer combination is installed to together, has formed the jet-preventing tool string.Be a kind of in the situation that do not discharge the strata pressure in pit shaft, in band pressure condition oil-water-gas well carries out the workover treatment process, guarantee the requisite security tool that oil sets annular space pressure does not leak.Present well workover jet-preventing tool string with pressure is used widely, but at present the assembled arrangement of jet-preventing tool string order is different, but its main combination is: 1, from bottom to up successively connection comprise full envelope and half envelope double ram type preventer, be connected rising pipe nipple, annular preventer, stationary slip, the traveling slip of two anti-pressurization oil cylinders and Working platform cross beam short circuit, the double ram type preventer that comprises half envelope, safety slip, annular preventer, connection open flow valves; 2, from top to bottom successively connection comprise full envelope and half envelope and safety slip triple ram preventer, be connected two anti-pressurization oil cylinders with the Working platform cross beam short circuit, partly seal preventer, be connected the rising four-way of balance and atmospheric valve, partly seal preventer, annular preventer, rising pipe nipple, stationary slip, traveling slip.Above-mentioned jet-preventing tool string ubiquity well head is installed location difficulty, and shaft mouth operating bench is too high the shortcoming such as is inconvenient to operate.And the side door oil cylinder of all preventers does not all design secondary seal mechanism, so, after side door oil cylinder and the damage of preventer body seal, well liquid can enter hydraulic system by the seal damaged, and causes security incident.While changing seal, can only emit spray to change seal, unfavorable in safety in production, also well site is polluted.So the combination of well workover jet-preventing tool string with pressure must be kept the safety in production and also will be convenient to work-over operation.
Summary of the invention
The purpose of this utility model is to provide a kind of energy-storing workover rig jet-preventing tool string with pressure, overcomes existing jet-preventing tool string, at well head, location difficulty is installed, and in operation process, blowout preventer seal is changed difficult defect, with energy-storing workover rig with pressure, is used in conjunction with.Make it play blowout prevention and safeguard protection effect in workover treatment, not only can guarantee safe production, also be convenient to workover treatment.
Technical solution of the present utility model is: a kind of energy-storing workover rig jet-preventing tool string with pressure comprises four ram preventers, shears preventer, bascule, emptying device and double ram type preventer, is connected to blowdown pipeline on emptying device.This tool string from bottom to top successively connection traversing mechanism, manually centralizer, four ram preventers, connecting platform pipe nipple, shear preventer, annular preventer, rising pipe nipple, bascule, emptying device and double ram type preventer, balance pipeline one end is connected with bascule, and the other end is connected with rotating mechanism.Rotating mechanism can make this tool string position and well head align at any angle.Manually centralizer is in lower tubular column, can the righting tubing string to the well head center, there is the anti-sticking effect.Four ram preventers, shearing preventer and double ram type preventer are equipped with secondary seal mechanism.
Compared with prior art, remarkable result of the present utility model is: the rotating mechanism in the utility model can make this tool string align at position and well head at any angle, easy to operate.Manually centralizer is in lower tubular column, can the righting tubing string to the well head center, there is the anti-sticking effect.In four ram preventers, being arranged on nethermost is safety half envelope, when damaging appears in any one preventer, the seal of slips, the parts of its top, as long as close this safety half envelope, just can change in time, the collocation of its erection sequence and various preventers is reasonable.And the distance between first envelope in double ram type preventer and second envelope in four ram preventers reaches more than 3 meters, be enough to pour out long downhole tool, facilitated removing of downhole tool.The various preventers of installing in the utility model, except annular preventer, all are provided with primary seal and back-up seal, possess the function of secondary seal.The sealing condition of seal can conveniently be observed especially in the detection hole of designing on the side door oil cylinder, can understand in time sealing condition, change in time, prevents contaminated environment, prevents that well liquid from mixing with hydraulic oil liquid, protection hydraulic pressure workover rig.In order to facilitate the replacing of the parts such as ram block, slips and seal, avoid the hydraulic oil outflow, the utility model has been used hydraulic hose to be communicated with that its side door oil cylinder is opened hydraulic fluid port and the side door oil cylinder is closed hydraulic fluid port on preventer, has facilitated the maintenance operation of production scene.The utility model is not only easy to operate, but the while environmental contamination reduction in the application life of extension device, reduces production costs.
The accompanying drawing explanation
Fig. 1 is mounting structure schematic diagram of the present utility model.
In figure: sewage reservoir 1, rotating mechanism 2, rotary flange 2-1, upper flange 2-2, balance pipeline 3, manual centralizer 4, four ram preventers 5, safety are partly sealed 5-1, safety slip 5-2, entirely seal 5-3, second envelope 5-4, connecting platform pipe nipple 6, are sheared preventer 7, blowdown pipeline 8, annular preventer 9, rising pipe nipple 10, bascule 11, emptying device 12, double ram type preventer 13, slips 13-1, first envelope 13-2
Fig. 2 shears the structural representation of preventer in the utility model.
In figure: body 7-1, side door oil cylinder 7-2, hydraulic hose 7-3
Fig. 3 is for shearing the structural representation of side door of blowout preventer oil cylinder.
In figure: detection hole pin 7-2-1, side door oil cylinder body 7-2-2, detection hole 7-2-3, primary seal 7-2-4, the axis of the piston 7-2-5, back-up seal 7-2-6, balance port 7-2-7, cylinder seal part 7-2-8, locking screw mandrel 7-2-9, gland 7-2-10, stop pin 7-2-11, side door oil cylinder are opened hydraulic fluid port 7-2-12, the side door oil cylinder is closed hydraulic fluid port 7-2-13
The A-A that Fig. 4 is side door oil cylinder body is to cross section view.
In figure: balance port 7-2-7, side door oil cylinder body 7-2-2, piston component 7-2-5
The surface structure schematic diagram that Fig. 5 is Fig. 3.
In figure: gland 7-2-10
The specific embodiment
For further disclosing the technical solution of the utility model, below in conjunction with Figure of description, elaborate.
A kind of energy-storing workover rig jet-preventing tool string with pressure comprises four ram preventers 5, shears preventer 7, bascule 11 and double ram type preventer 13, this tool string from bottom to top successively connection traversing mechanism 2, manually centralizer 4, four ram preventers 5, connecting platform pipe nipple 6, shear preventer 7, annular preventer 9, rising pipe nipple 10, bascule 11, emptying device 12 and double ram type preventer 13, balance pipeline 3 one ends are connected with bascule 11, and the other end is connected with rotating mechanism 2; Four ram preventers 5, shearing preventer 7 and double ram type preventer 13 are equipped with secondary seal mechanism.Be connected to blowdown pipeline 8 on emptying device 12.Rotating mechanism 2 comprises rotary flange 2-1 and upper flange 2-2,
upper flange 2-2body be provided with the balance pipe line interface, by pipe fitting, with balance pipeline 3, be connected, rotary flange 2-1 is threaded with upper flange 2-2.Rotary flange 2-1 in rotating mechanism 2 is threaded with upper flange 2-2, and its function is can any angular position align well head, thereby avoids the restriction of the factor such as well site size to equipment; Manual centralizer 4 in Fig. 1, when being lower tubular column, depart from the well head center because the borehole pressure effect makes the tubing string distortion, and its function is exactly that the righting tubing string is to well head center anti-sticking.Four ram preventers 5 comprise that safety partly seals 5-1, safety slip 5-2, entirely seals 5-3 and second envelope 5-4, install successively from bottom to top.Double ram type preventer 13 comprises slips 13-1 and first envelope 13-2, installs successively from bottom to top.The distance that first envelope 13-2 partly seals between 5-1 to safety is set between 3.m-3.8m.In Fig. 1, four ram preventers 5 have been installed safety from bottom to top and are partly sealed 5-1, safety slip 5-2, entirely seal 5-3, second envelope 5-4, the effect that safety is partly sealed 5-1 is in the well workover process, when damaging appears in the some or a plurality of seals on it in all preventers, slips, only need closed safe partly to seal 5-1, can be keeped in repair above preventer, slips.When the effect of safety slip 5-2 is the clamping that in double ram type preventer 13, the appearance of the tooth sheet in slips 13-1 wearing and tearing can not be safe and reliable, closed safe slips 5-2, can be changed the tooth sheet in slips 13-1; The effect of full envelope 5-3 is sealed well head in the situation without tubing string in well; Second envelope 5-4 is work half envelope, and first envelope 13-2 in main and double ram type preventer 13 is used in conjunction with, and pours out string collar and instrument, and it,, apart from having reached 3.2m-3.8m, is enough to pour out long downhole tool.Connecting platform pipe nipple 6 in Fig. 1, its major function is to be connected with the workover platform of energy-storing workover rig with pressure.Shearing preventer 7 in Fig. 1, its major function is in well workover process with pressure, the cut-out oil pipe that can take under the extreme cases such as the interior blowout hookup catastrophic failure in tubing string is realized envelope entirely, thereby avoids serious accident to occur.Annular preventer 9 in Fig. 1, its major function is the sealing realized from zero Arbitrary Shape Cross Section to channel diameter.Rising pipe nipple 10 in Fig. 1, its main effect is that bascule 11 and emptying device 12 are installed, wherein the effect of bascule 11 is in playing lower tubular column reverse graft hoop process, during second envelope 5-4 that will be by closing, first envelope 13-2 is closed, close emptying device 12 simultaneously, open bascule 11, pressure in well will form equilibrium pressure by the both sides up and down of bascule 11 second envelope 5-4 in four ram preventers 5, and while preventing second envelope of switch 5-4, seal damages.Aforesaid operations also can prevent that switch safety from partly sealing 5-1, the damage of seal when entirely sealing 5-3 and shearing preventer 7.When tubing coupling will be by closing first envelope 13-2 the time, at first close second envelope 5-4, close bascule 11, then open emptying device 12.Now, bleeding off pressure a small amount of well liquid in pit shaft can be guided to well liquid in sewage reservoir 1 by the blowdown pipeline 8 be connected with emptying device 12, makes the upper and lower both sides of first envelope 13-2 without pressure balanced
, open first envelope 13-2, string collar is pourable.Fig. 2 is the shearing preventer 7 in the utility model, take and shears preventer 7 as the improvement of example description to each side door of blowout preventer oil cylinder and preventer body three oil canals, sets forth the structure of side door of blowout preventer oil cylinder.Referring to Fig. 2 and Fig. 4, four ram preventers 5 are identical with shearing preventer 7 structures with double ram type preventer 13, shear preventer 7 and comprise preventer body 7-1 and side door oil cylinder 7-2, preventer body 7-1 is connected with side door oil cylinder 7-2 by bolt, be provided with upper and lower two three oil canals in preventer body 7-1, three hydraulic fluid ports of every three oil canals are all outside preventer body 7-1; The middle hydraulic fluid port of every three oil canals is communicated with hydraulic system, and the hydraulic fluid port on both sides is communicated with the side door oil cylinder 7-2 of preventer body 7-1 both sides by hydraulic hose 7-3 respectively.Side door oil cylinder 7-2 comprises side door oil cylinder body 7-2-2, piston component 7-2-5, gland 7-2-10 and stop pin 7-2-11, locking screw mandrel 7-2-9 middle part is provided with every platform, rear end is provided with pin shaft hole, and its front end is threaded with piston component 7-2-5, and stop pin 7-2-11 is equipped with in its rear end; The housing both sides of gland 7-2-10 are provided with sliding tray, and stop pin 7-2-11 can slide in this sliding tray; Side door oil cylinder body 7-2-2 is provided with that the side door oil cylinder is opened hydraulic fluid port 7-2-12 and the side door oil cylinder is closed hydraulic fluid port 7-2-13.Above preventer body 7-1, the hydraulic fluid port on three oil canal both sides is opened hydraulic fluid port 7-2-12 by hydraulic hose 7-3 with two side door oil cylinders and is communicated with, and the hydraulic fluid port on another three oil canals both sides is closed hydraulic fluid port 7-2-13 by hydraulic hose 7-3 with two side door oil cylinders and is communicated with.Its function is that hydraulic oil can not flow out when the flashboard of changing each preventer inside or seal, avoids waste and on-the-spot the pollution
.referring to Fig. 3 and Fig. 5, side door oil cylinder 7-2 comprises side door oil cylinder body 7-2-2, piston component 7-2-5, gland 7-2-10 and stop pin 7-2-11, locking screw mandrel 7-2-9 middle part is provided with every platform, rear end is provided with pin shaft hole, its front end is threaded with piston component 7-2-5, and stop pin 7-2-11 is equipped with in its rear end; The housing both sides of gland 7-2-10 are provided with sliding tray, and stop pin 7-2-11 can slide in this sliding tray.The screw thread that has guaranteed locking screw mandrel 7-2-9 and piston component 7-2-5 does not rotate, with regard to guaranteed in operation process can be because the setback button causes the various ram preventer generation switch situation not in place in the utility model yet.Referring to Fig. 3 and Fig. 4, the secondary seal mechanism of four ram preventers 5, shearing preventer 7 and double ram type preventer 13 comprises primary seal 7-2-4, back-up seal 7-2-6 and the cylinder seal part 7-2-8 be arranged on side door oil cylinder body 7-2-2, on the side door oil cylinder body 7-2-2 between back-up seal 7-2-6 and cylinder seal part 7-2-8, is provided with balance port 7-2-7; Be provided with on the side door oil cylinder body 7-2-2 between primary seal 7-2-4 and back-up seal 7-2-6 and detect hole 7-2-3, in the external port of this detections hole 7-2-3, detection hole pin 7-2-1 is housed.Fig. 3 is side door cylinder part schematic diagram, wherein, after primary seal 7-2-4 damages, detects hole 7-2-3 and just has the outflow of well liquid, as be inconvenient to change seal in operation process, only need tighten detecting hole pin 7-2-1, back-up seal 7-2-6 works, and can realize secondary seal.Be provided with balance port 7-2-7 between cylinder seal part 7-2-8 and back-up seal 7-2-6, one of its effect is to guarantee seal one side atmospheric pressure state, if after back-up seal 7-2-6 damages on the other hand, well liquid and fluid can be kept apart, prevent that hydraulic system from being polluted.When balance port 7-2-7 has liquid to flow out, must partly seal 5-1 by closed safe, change the seal damaged.Piston component 7-2-5 mono-end is connected with the flashboard in preventer body 7-1, and the other end is connected with locking screw mandrel 7-2-9 by screw thread, and locking screw mandrel 7-2-9 is the multidiameter shape, and the other end has pin shaft hole.Split sliding tray on gland 7-2-10, stop pin 7-2-11 is through the sliding tray on gland 7-2-10 and the pin shaft hole on the 7-2-9 locking screw, and nut is installed at two ends, has guaranteed that the screw thread of locking screw mandrel 7-2-9 and piston component 7-2-5 does not rotate.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449087 CN202788722U (en) | 2012-09-05 | 2012-09-05 | A blowout prevention tool string for a pressurized energy storage workover rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449087 CN202788722U (en) | 2012-09-05 | 2012-09-05 | A blowout prevention tool string for a pressurized energy storage workover rig |
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| Publication Number | Publication Date |
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| CN202788722U true CN202788722U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220449087 Expired - Fee Related CN202788722U (en) | 2012-09-05 | 2012-09-05 | A blowout prevention tool string for a pressurized energy storage workover rig |
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| CN (1) | CN202788722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817571A (en) * | 2012-09-05 | 2012-12-12 | 东营鸿昇机械设备有限公司 | Blowout-prevention tool string of belt pressure energy storage well repairing machine |
| CN105804680A (en) * | 2016-05-16 | 2016-07-27 | 崔斌 | Under-pressure well repairing working device and method of oil-gas field |
-
2012
- 2012-09-05 CN CN 201220449087 patent/CN202788722U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817571A (en) * | 2012-09-05 | 2012-12-12 | 东营鸿昇机械设备有限公司 | Blowout-prevention tool string of belt pressure energy storage well repairing machine |
| CN105804680A (en) * | 2016-05-16 | 2016-07-27 | 崔斌 | Under-pressure well repairing working device and method of oil-gas field |
| CN105804680B (en) * | 2016-05-16 | 2018-08-28 | 崔斌 | A kind of oil gas field workover operation device with pressure and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20140905 |
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| EXPY | Termination of patent right or utility model |