CN109372461A - Blowout out of control wellhead assembly remapping method - Google Patents
Blowout out of control wellhead assembly remapping method Download PDFInfo
- Publication number
- CN109372461A CN109372461A CN201811427375.0A CN201811427375A CN109372461A CN 109372461 A CN109372461 A CN 109372461A CN 201811427375 A CN201811427375 A CN 201811427375A CN 109372461 A CN109372461 A CN 109372461A
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- China
- Prior art keywords
- spring
- casing
- wellhead assembly
- control
- slips
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 229910000639 Spring steel Inorganic materials 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 238000009434 installation Methods 0.000 description 7
- 230000008602 contraction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 240000005546 Piper methysticum Species 0.000 description 1
- 235000016787 Piper methysticum Nutrition 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a kind of blowout out of control wellhead assembly remapping methods, it is related to after oil/gas well blowout out of control Casing-Cutting or the well head of light sleeve is reset, integral type oil/gas well blowout out of control is speedily carried out rescue work with bottom flanged joint in new wellhead assembly lower part, bottom flange is pressurizeed with well head reset apparatus and is packed on light casing, realizes casing clamping and sealing；When Casing-Cutting, casing is cut off using beveling machine, while pouring out groove in casing top surface.This method can substantially reduce the step of blowout out of control wellhead assembly resetting, improve the efficiency of installing wellhead operation, reduce emergency personnel's nearly shaft mouth operation time, reduce operating risk.
Description
Technical field
The present invention relates to after oil/gas well blowout out of control Casing-Cutting or the well head of light sleeve resetting, specifically relate to
A kind of blowout out of control wellhead assembly remapping method.
Background technique
When blowout out of control kindling occurs for oil/gas well, it is often the case that wellsite facility damage, well head damage.Its rescue
Common practice is: the cooling shielding of well head, equipment of speedily carrying out rescue work, personnel removes the installations and facilities around well head, then cuts well
Mouthful.Basis reconnoitres situation and determines well head cutting position before cutting well head, if well head bottom flange does not damage, from well head bottom flange
Top four-way cuts well head, takes to rob after four-way lower flange and fills new well head.If well head bottom flange damages, covered in bottom flange lower part
Well head is cut at pipe.
Currently, being directed to the usual way that after blowout out of control well Casing-Cutting or the well head of light sleeve is reset is: installation
Anti-settling dead card robs dress two-flap type emergency casing head, the new well head of resetting.
Such as Publication No. CN108412447A, publication date is that the Chinese patent literature on the 17th of August in 2018 discloses one kind
Oil/gas well blowout out of control is speedily carried out rescue work with wellhead assembly comprising ontology, bobbin seal assembly, slips assembly, is prevented fully closed seal assembly
Heavy slips, lock shaft, hydraulic cylinder, locking axle bed and side door, the ontology are seated on anti-settling slips, and multiple side doors are connected to
On ontology, it is mounted on hydraulic cylinder in each side door, liquid presses piston pole is installed in hydraulic cylinder, liquid presses piston pole front end connects
Connect fully closed seal assembly, bobbin seal assembly and slips assembly, be provided with three chambers in the ontology, three chambers on to
Under be successively arranged the fully closed seal assembly, bobbin seal assembly and slips assembly, locking axle bed is connected on side door, lock shaft
Lock shaft is installed on seat, is axially provided with collar aperture along ontology, casing is located in collar aperture.Using the invention, can significantly improve
Installing wellhead operating efficiency reduces emergency personnel close to the number of shaft mouth operation.
Using above patent document as representative using wellhead assembly remapping method the step of it is more, need the emergency personnel more
Secondary, the nearly shaft mouth operation of long-time, risk is big, low efficiency.
Summary of the invention
The present invention is directed to provide a kind of blowout out of control wellhead assembly for defect and deficiency present in the above-mentioned prior art
Remapping method can substantially reduce the step of blowout out of control wellhead assembly is reset, and improve the efficiency of installing wellhead operation, and reduction is speedily carried out rescue work
Personnel's nearly shaft mouth operation time reduces operating risk.
The present invention is realized by using following technical proposals:
A kind of blowout out of control wellhead assembly remapping method, it is characterised in that: integral type oil/gas well blowout out of control is speedily carried out rescue work with bottom method
Orchid is connected to new wellhead assembly lower part, with well head reset apparatus will bottom flange pressurization be packed into light casing on, realize casing clamping and
Sealing；When Casing-Cutting, casing is cut off using beveling machine, while pouring out groove in casing top surface.
The integral type oil/gas well blowout out of control is speedily carried out rescue work with bottom flange comprising: ontology, slips, spring, O-shaped sealing
Circle, spring lock block, backbone sealing ring, anti-settling locating piece, the ontology are equipped with up big and down small conical internal cavity, and slips is installed on cone
It is in shape inner cavity and self-locking, the opening for passing through and cooperating for casing, top and spring of the spring pocket in slips are equipped in the middle part of slips
By spring lock block precommpression, O-ring seal is mounted on the outer ring of spring lock block, and spring lock block is fixed on the body, reinforced seal
Circle is mounted in the inner ring of spring lock block, and anti-settling locating piece is placed in the top of spring lock block, and anti-settling locating piece is fixed on ontology
On.
Spring lock block is fixed on the body by spring lock block fixing bolt.
Anti-settling locating piece connects bolt with anti-settling locating piece and fixes on the body.
The slips includes being fixed together or integrally formed upper and lower part, and the low profile is circle
Cone, up big and down small, top shape is cylindrical body, and there is a step in the junction of cylindrical body lower part and cone, slips it is interior
Diameter is machined with equally distributed tooth, and top unthreaded hole internal diameter is big compared with tooth internal diameter.
Have in the circumferential design of slips be uniformly distributed, the slot of equivalent width.
Having one in the slot is through slot.
Hole is provided at the top of the slot.
Backbone sealing ring is the circular ring-type mainly formed by skeleton, spring plate group and rubber, and the spring plate group is uniform
The top outer ring of skeleton is set, and spring plate group top is obliquely installed to the center point of circular ring-type, and rubber is set by vulcanizing to surround
In spring plate group and skeleton.
The sectional elevation of the skeleton is L-type, and skeleton is metal structure.
The spring plate group is fixed by welding on skeleton.
The spring plate group includes multiple spring steel plates.
Compared with prior art, the beneficial effects obtained by the present invention are as follows it is as follows:
1, the tool and method of Casing-Cutting are specified using this method, the integral type oil/gas well blowout out of control of design is speedily carried out rescue work use
Bottom flange can be realized simultaneously clamping and sealing with casing, and well head can be once completed after connecting with new well head and robs dress, reduces well
The step of spraying wellhead assembly out of control resetting, improves installing wellhead operating efficiency, reduces emergency personnel's nearly shaft mouth operation time, reduces
Operating risk.
2, bottom flange is provided with slips, can shrink or amplify according to the size of the casing of installation, spring is solid to slips one
Fixed pretightning force, slips have self-locking function, and upward power is bigger, and clamping force is bigger.It is close using skeleton between casing and the present invention
Seal sealing, there is well pressure to help envelope effect.The present invention once completes well head after connecting with new well head and robs dress, can effectively reduce and speedily carry out rescue work
Personnel reduce operating risk close to the number of shaft mouth operation, improve operating efficiency.
The present invention is speedily carried out rescue work by O-ring seal and backbone sealing ring sealing sleeve pipe and oil/gas well blowout out of control with bottom flange,
Reach once mounting and realizes casing clamping and sealing.Flange body is equipped with conical internal cavity room and is used to install slips, taper chamber
Taper angle meets self-locking requirement.Slip design has opening, and clamping set can be shunk or amplified according to the size of the casing of installation
Pipe., with the pretightning force of spring by the pre- clamping of slips and casing.Backbone sealing ring prevents borehole fluid from spring lock block and casing
Between spray.
3, slips of the invention is the integrated design, and is made using spring steel, and design is shunk and the slot of expansion, on the top of slot
Portion's design has the hole for preventing crackle from generating, and slips can fix preloading spring, this slips has self-locking function after shrinking clamping.For
Oil/gas well blowout out of control, which is speedily carried out rescue work, provides good basis with the casing clamping and sealing of bottom flange, improves installing wellhead operation effect
Rate reduces emergency personnel close to the number of shaft mouth operation.
Slips outer ring lower part is designed to that the conical surface, taper angle meet self-locking function.Top shape is cylindrical body, with upper cone
There is a step in body junction, can be used for fixing preloading spring.Circumferential design have be uniformly distributed, the slot of equivalent width, and have one
A through slot meets slips to radial contraction or the requirement of expansion.The top design of each slot has the hole for preventing slips body from cracking.
4, backbone sealing ring of the invention uses composite structure, and the spring plate group of welding can be according to the big of the casing sealed
Small expansion or contraction make sealing ring and casing generate initial sealing, play the role of pressure as the pressure increases and help envelope.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, in which:
Fig. 1 is that integral type oil/gas well blowout out of control is speedily carried out rescue work with bottom flange arrangement schematic diagram；
Fig. 2 is kava structure schematic diagram；
Fig. 3 is backbone sealing ring structural schematic diagram.
Marked in the figure:
1, ontology, 1a, connecting screw hole, 1b, gasket ring slot, 2, slips, 3, spring, 4, O-ring seal, 5, spring lock block, 6, skeleton
Sealing ring, 7, spring lock block fixing bolt, 8, anti-settling locating piece, 9, anti-settling locating piece connection bolt, 10, casing, 11, step,
12, hole, 13, slot, 14, through slot, 15, cylindrical body, 16, cone, 17, tooth, 21, skeleton, 22, rubber, 23, spring steel plate.
Specific embodiment
Embodiment 1
As a better embodiment of the invention, it discloses a kind of blowout out of control wellhead assembly remapping methods, design one kind
Integral type oil/gas well blowout out of control is speedily carried out rescue work with bottom flange, is connected in new wellhead assembly lower part, with well head reset apparatus by it
Pressurize and be packed on light casing 10, realize 10 clamping of casing and sealing.
When Casing-Cutting 10, casing 10 is cut off using beveling machine, while pouring out groove in 10 top surface of casing, facilitate integral type
Oil/gas well blowout out of control, which is speedily carried out rescue work, is packed into casing 10 with bottom flange, avoids the damage speedily carried out rescue work with bottom flange sealing element.
The blowout out of control, which is speedily carried out rescue work, can be shunk or be amplified according to the size of the casing 10 of installation with bottom flange, and spring 3 gives slips 2
One fixed pretightning force, basket slips 2 have self-locking function, and upward power is bigger, and clamping force is bigger.
Casing 10 and integral type oil/gas well blowout out of control are speedily carried out rescue work uses backbone sealing ring 6 to seal between the flange of bottom, has
Well pressure helps envelope to act on.
Embodiment 2
As another better embodiment of the invention, it discloses integral type oil/gas well blowout out of control to speedily carry out rescue work with bottom flange,
It include: ontology 1, slips 2, spring 3, O-ring seal 4, spring lock block 5, backbone sealing ring 6, anti-settling locating piece 8, the ontology 1
Equipped with up big and down small conical internal cavity, slips 2 is installed in conical internal cavity and self-locking, is equipped in the middle part of slips 2 and wears for casing 10
The opening crossed and cooperated, 3 sets of spring slips 2 top and spring 3 by 5 precommpression of spring lock block, O-ring seal 4 is mounted on
The outer ring of spring lock block 5, spring lock block 5 are fixed on ontology 1, and backbone sealing ring 6 is mounted in the inner ring of spring lock block 5, are prevented
Heavy locating piece 8 is placed in the top of spring lock block 5, and anti-settling locating piece 8 is fixed on ontology 1.
Ontology 1, which designs, has connecting screw hole 1a and gasket ring slot 1b for being connected and fixed and sealing with new well head.
Slips 2 is basket.Ontology 1 is equipped with conical internal cavity room for installing slips 2, and the taper angle of taper chamber meets self-locking
It is required that.The design of slips 2 has opening, can shrink or amplify according to the size of the casing 10 of installation.
3 sets of the spring top in slips 2 is compressed by spring lock block 5, pushes basket 2 retracted downward clamping casing 10 of slips.
O-ring seal 4 is mounted on the outer ring of spring lock block 5, for preventing borehole fluid from spraying between Packing spring briquetting 5 and ontology 1
Out.Spring lock block 5 is fixed on ontology 1 by spring lock block fixing bolt 7.Backbone sealing ring 6 is mounted on the interior of spring lock block 5
Circle, for preventing borehole fluid from spraying between spring lock block 5 and casing 10.The anti-settling design of locating piece 8 has step 11, for fixed
Position oil/gas well blowout out of control speedily carry out rescue work with bottom flange casing 10 installation site.Anti-settling locating piece 8 connects spiral shell with anti-settling locating piece
Bolt 9 is fixed on ontology 1.
Embodiment 3
As another better embodiment of the invention, disclosed slips 2 includes being fixed together or integrally formed
Upper and lower part, the low profile is cone 16, up big and down small, and top shape is cylindrical body 15,15 lower part of cylindrical body
There is a step 11 with the junction of cone 16, the internal diameter of slips 2 is machined with equally distributed tooth 17, top unthreaded hole internal diameter
It is big compared with 17 internal diameter of tooth.
Low profile is cone 16, and up big and down small, the taper angle of the conical surface meets self-locking function.Top shape is cylindrical body
15, the junction of 15 lower part of cylindrical body and cone 16 has a step 11, cone 16 and 11 face of step to pre-tighten for fixed
Spring 3, slips 2 are pressed downward.Its internal diameter is machined with equally distributed tooth 17, be used for clamping casing 10, top unthreaded hole internal diameter compared with
17 internal diameter of tooth is big, avoids interference with the clamping of casing 10.Circumferentially design have be uniformly distributed, the slot 13 of equivalent width, have simultaneously
One through slot 14 meets slips 2 to radial contraction or the requirement of expansion.13 top design of slot has hole 12, and slips 2 is avoided to repeat
It shrinks and is cracked when expanding.
Embodiment 4
As another better embodiment of the invention, disclosed backbone sealing ring 6 be mainly by skeleton 21, spring plate group and
The circular ring-type that rubber 22 is formed, the spring plate group are uniformly arranged on the top outer ring of skeleton 21, and spring plate group top is to circle
The center point of ring is obliquely installed, and rubber 22 is set in spring plate group and skeleton 21 by vulcanizing to surround.
The sectional elevation of the skeleton 21 is L-type, and skeleton 21 is metal structure.
The spring plate group is fixed by welding on skeleton 21.
The spring plate group includes multiple spring steel plates 23.
Its production method is:
211 top outer ring uniform welding spring steel plate 23 of L-type skeleton, 23 top of spring steel plate are tilted to center, integral outer sulphur
Change rubber 22.Retain 11 face of L-type step after vulcanization and be used for fixed seal ring, 11 face top shape of L-type step forms up-small and down-big
The conical surface.Sealing ring using 3, spring elasticity can according to the expanded in size or contraction of the casing 10 sealed, make sealing ring with
Casing 10 generates initial sealing.Because 11 face top shape of L-type step is a up-small and down-big conical surface, when upper pressure increases
There is pressure and helps envelope.
Claims (10)
1. a kind of blowout out of control wellhead assembly remapping method, it is characterised in that: integral type oil/gas well blowout out of control is speedily carried out rescue work and uses bottom
Bottom flange is pressurizeed with well head reset apparatus and is packed on light casing (10) in new wellhead assembly lower part by flanged joint, realizes casing
(10) clamping and sealing；When Casing-Cutting (10), casing (10) are cut off using beveling machine, while pouring out slope in casing (10) top surface
Mouthful.
2. a kind of blowout out of control wellhead assembly remapping method according to claim 1, it is characterised in that: the integral type
Oil/gas well blowout out of control is speedily carried out rescue work with bottom flange comprising: ontology (1), slips (2), spring (3), O-ring seal (4), spring pressure
Block (5), backbone sealing ring (6), anti-settling locating piece (8), the ontology (1) are equipped with up big and down small conical internal cavity, slips (2) peace
Loaded in conical internal cavity and self-locking, the opening for passing through and cooperating for casing (10) is equipped in the middle part of slips (2), spring (3) covers
The top of slips (2) and spring (3) is by spring lock block (5) precommpression, O-ring seal (4) is mounted on the outer of spring lock block (5)
Circle, spring lock block (5) are fixed on ontology (1), and backbone sealing ring (6) is mounted in the inner ring of spring lock block (5), anti-settling positioning
Block (8) is placed in the top of spring lock block (5), and anti-settling locating piece (8) is fixed on ontology (1).
3. a kind of blowout out of control wellhead assembly remapping method according to claim 2, it is characterised in that: spring lock block (5)
It is fixed on ontology (1) by spring lock block fixing bolt (7).
4. a kind of blowout out of control wellhead assembly remapping method according to claim 2, it is characterised in that: anti-settling locating piece
(8) it is fixed on ontology (1) with anti-settling locating piece connection bolt (9).
5. a kind of blowout out of control wellhead assembly remapping method according to claim 2, it is characterised in that: the slips
(2) include being fixed together or integrally formed upper and lower part, the low profile is cone (16), it is upper it is big under
Small, top shape is cylindrical body (15), and there are a step (11), slips in cylindrical body (15) lower part and the junction of cone (16)
(2) internal diameter is machined with equally distributed tooth (17), and top unthreaded hole internal diameter is big compared with tooth (17) internal diameter.
6. a kind of blowout out of control wellhead assembly remapping method according to claim 5, it is characterised in that: in slips (2)
Circumferential design have be uniformly distributed, the slot of equivalent width (13), having one in the slot (13) is through slot (14), in the slot
(13) hole (12) are provided at the top of.
7. a kind of blowout out of control wellhead assembly remapping method according to claim 2, it is characterised in that: backbone sealing ring
It (6) is the circular ring-type mainly formed by skeleton (21), spring plate group and rubber (22), the spring plate group is uniformly arranged on bone
The top outer ring of frame (21), spring plate group top are obliquely installed to the center point of circular ring-type, and rubber (22) is set by vulcanizing to surround
In spring plate group and skeleton (21).
8. a kind of blowout out of control wellhead assembly remapping method according to claim 7, it is characterised in that: the skeleton
(21) sectional elevation is L-type, and skeleton (21) is metal structure.
9. a kind of blowout out of control wellhead assembly remapping method according to claim 7, it is characterised in that: the spring leaf
Group is fixed by welding on skeleton (21).
10. a kind of blowout out of control wellhead assembly remapping method according to claim 7, it is characterised in that: the spring
Piece group includes multiple spring steel plates (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427375.0A CN109372461B (en) | 2018-11-27 | 2018-11-27 | Method for resetting wellhead device out of control of blowout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811427375.0A CN109372461B (en) | 2018-11-27 | 2018-11-27 | Method for resetting wellhead device out of control of blowout |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109372461A true CN109372461A (en) | 2019-02-22 |
| CN109372461B CN109372461B (en) | 2021-01-01 |
Family
ID=65383266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811427375.0A Active CN109372461B (en) | 2018-11-27 | 2018-11-27 | Method for resetting wellhead device out of control of blowout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372461B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630216A (en) * | 2019-10-15 | 2019-12-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drill rod mud scraper and using method thereof |
| CN112709825A (en) * | 2020-12-23 | 2021-04-27 | 栾彦岭 | Composite sealing element for coal slag door of coal mill of power plant |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4993488A (en) * | 1988-11-02 | 1991-02-19 | Mcleod Roderick D | Well casing packers |
| CN2176427Y (en) * | 1993-11-17 | 1994-09-07 | 华北石油华源管子工具公司修造厂 | Locking casinghead |
| US5492373A (en) * | 1994-09-28 | 1996-02-20 | J. M. Huber Corporation | Wellhead flange for interconnecting a threaded wellhead and a flanged blowout preventer |
| CN201087708Y (en) * | 2007-09-13 | 2008-07-16 | 中国石化集团胜利石油管理局井下作业三公司 | Mounting tools for incontrollable well blowout spraying device |
| CN201095968Y (en) * | 2007-09-28 | 2008-08-06 | 西安航威石化设备有限公司 | Slips type casing tube buckle connected simple casing head |
| CN201818272U (en) * | 2010-10-12 | 2011-05-04 | 郝建广 | High-pressure oil and gas well anti-jack device |
| CN203236067U (en) * | 2013-03-22 | 2013-10-16 | 中国海洋石油总公司 | Groove cutting machine |
| CN105971547A (en) * | 2016-06-25 | 2016-09-28 | 中国石油大学(华东) | Blowout rescue device and method for clustered well head of marine drilling platform |
-
2018
- 2018-11-27 CN CN201811427375.0A patent/CN109372461B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4993488A (en) * | 1988-11-02 | 1991-02-19 | Mcleod Roderick D | Well casing packers |
| CN2176427Y (en) * | 1993-11-17 | 1994-09-07 | 华北石油华源管子工具公司修造厂 | Locking casinghead |
| US5492373A (en) * | 1994-09-28 | 1996-02-20 | J. M. Huber Corporation | Wellhead flange for interconnecting a threaded wellhead and a flanged blowout preventer |
| CN201087708Y (en) * | 2007-09-13 | 2008-07-16 | 中国石化集团胜利石油管理局井下作业三公司 | Mounting tools for incontrollable well blowout spraying device |
| CN201095968Y (en) * | 2007-09-28 | 2008-08-06 | 西安航威石化设备有限公司 | Slips type casing tube buckle connected simple casing head |
| CN201818272U (en) * | 2010-10-12 | 2011-05-04 | 郝建广 | High-pressure oil and gas well anti-jack device |
| CN203236067U (en) * | 2013-03-22 | 2013-10-16 | 中国海洋石油总公司 | Groove cutting machine |
| CN105971547A (en) * | 2016-06-25 | 2016-09-28 | 中国石油大学(华东) | Blowout rescue device and method for clustered well head of marine drilling platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630216A (en) * | 2019-10-15 | 2019-12-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drill rod mud scraper and using method thereof |
| CN112709825A (en) * | 2020-12-23 | 2021-04-27 | 栾彦岭 | Composite sealing element for coal slag door of coal mill of power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109372461B (en) | 2021-01-01 |
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