CN108343394A - Convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer - Google Patents
Convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer Download PDFInfo
- Publication number
- CN108343394A CN108343394A CN201810101629.3A CN201810101629A CN108343394A CN 108343394 A CN108343394 A CN 108343394A CN 201810101629 A CN201810101629 A CN 201810101629A CN 108343394 A CN108343394 A CN 108343394A
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- China
- Prior art keywords
- centralizer
- protrusion
- ring flat
- brill
- plate
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- 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.)
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- 241001074085 Scophthalmus aquosus Species 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/043—Casing heads; Suspending casings or tubings in well heads specially adapted for underwater well heads
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- 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)
Abstract
The invention discloses the offshore oilfield batch brill ring flat-plates convenient for improvement centralizer, including two semi-circular rings, the both ends of the semi-circular ring are respectively provided with the protrusion radially stretched out, it is threaded through-hole on the protrusion, protrusion in two semi-circular rings includes two groups of face respectively, it is bolted between one group of protrusion facing each other, connecting shaft is set between another group of protrusion facing each other, the both ends of connecting shaft are separately connected two bearings, one end connecting screw of the bearing far from connecting shaft, the screw rod connected on two bearings is each passed through the tapped through hole on the protrusion of respective face, the screw rod matches with the tapped through hole.The purpose of the present invention is to provide the offshore oilfield batch brill ring flat-plates convenient for improvement centralizer, adjustment surface pipe centralizer takes time and effort when solving the problems, such as that offshore platform one opens operation in the prior art, realizes the purpose directly adjusted to the centralizer of surface pipe by ring flat-plate.
Description
Technical field
The present invention relates to offshore oil and gas drilling applications, and in particular to convenient for improving the offshore oilfield batch brill ring of centralizer
Plate.
Background technology
Well cementation is directed to tripping in casing in well, and the construction work of cement is injected to the annular space between wellbore and casing
Industry.It is an indispensable important link during being drilled well operations, it includes setting of casing and cementing.Cementing technology is more
The comprehensive application technology of subject has the characteristics that systematicness, disposable and time are short.The main purpose of well cementation is protection and support
Casing in oil/gas well, the stratum such as packing oil, gas and water.For offshore drilling engineering, since engineering department leads in erection
Riser pipe will be hammered when pipe support and enters mud, therefore unlike Terrestrial casing, surface pipe in offshore drilling engineering
It is tripping in riser pipe.Meanwhile domestic each offshore oilfield advocates " excellent fast " work pattern energetically at present, for surface layer
For one opens operation, after work pattern is tripping in surface pipe, ring flat-plate is set on riser pipe, by table in well head chain-wales seat
The box cupling of layer casing, which is placed on ring flat-plate, to be carried, and dismantles surface pipe from the box cupling on ring flat-plate later, you can adjustment is bored
The cantilever beam and derrick location of well platform carry out the operation of next well, while being carried out using Simple cement head in well head chain-wales
Surface casing cementing operation, to realize a large amount of savings of duration.Such work pattern has been that current domestic offshore production well batch bores
Conventional exploitation pattern, in such work pattern, ring flat-plate need seat on riser pipe simultaneously surface pipe is kept, therefore
The concentric rate of the height of ring flat-plate installation accuracy, ring flat-plate and riser pipe will have a direct impact on the centralizer of surface pipe, Jin Eryan
Rate is returned on cement mortar when ghost image rings surface pipe well cementation, if the adjustment of ring flat-plate position is bad, is very easy to that surface pipe is caused to be cemented the well
Ineffective, this is for the cluster well of offshore production platform, in some instances it may even be possible to which phenomena such as causing cement mortar to alter slot occurs, and is well
The accident of touching buries security risk.In view of the above-mentioned problems, when being all present ring flat-plate in the prior art, in well head chain-wales by two and half
The ring plate of circular ring type is fixed composition ring flat-plate seat and is embraced on riser pipe, by surface pipe, then passes through guide chain (hand by several workers
Dynamic cucurbit) it is wrapped on surface pipe and is pulled, so as to adjust the centralizer of surface pipe, drive ring flat-plate to occupy by surface pipe
In it is in place.But this adjustment mode is needed to expend a large amount of manpower and could be completed, while it is also desirable to find at the scene it is suitable
The place of fixed guide chain, cause inefficiency, take it is very long.
Invention content
The purpose of the present invention is to provide the offshore oilfield batch brill ring flat-plates convenient for improvement centralizer, to solve the prior art
The problem of surface pipe centralizer takes time and effort is adjusted when middle offshore platform one opens operation, is realized through ring flat-plate to surface pipe
The purpose that centralizer is directly adjusted.
The present invention is achieved through the following technical solutions：
Convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer, including two semi-circular rings, the two of the semi-circular ring
End is respectively provided with the protrusion radially stretched out, and through-hole, the protrusion in two semi-circular rings are threaded on the protrusion
Portion includes two groups of face respectively, is bolted between one group of protrusion facing each other, and another group facing each other convex
Go out between portion and connecting shaft is set, the both ends of connecting shaft are separately connected two bearings, one end connection of the bearing far from connecting shaft
Screw rod, the screw rod connected on two bearings are each passed through the tapped through hole on the protrusion of respective face, the screw rod with it is described
Tapped through hole matches.
The problem of surface pipe centralizer takes time and effort, this hair are adjusted when opening operation for offshore platform one in the prior art
Bright to propose convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer, ring flat-plate of the invention also includes two semi-circular rings, two
Semi-circular ring collectively form ring flat-plate for seat in riser pipe, the both ends of semi-circular ring be respectively provided with radially stretch out it is convex
Go out portion, existing ring flat-plate is that two groups of protrusions of two semi-circular rings are facing each other and then is bolted.And this hair
Only have one group of protrusion to be bolted between two semi-circular rings in bright, another group is attached by bearing, connecting shaft.
Specifically, passing through respective tapped through hole, two screw rod phases by two screw rods respectively on two protrusions facing each other
One end of mutual face respectively connects a bearing, then is connected two bearings by connecting shaft.Due to depositing for two bearings
, therefore a screw rod can carry out opposite rotation relative to another screw rod, the rotation of two screw rods is respectively independent not to be done mutually
It disturbs, and connecting shaft plays important connection function wherein.The present invention is in use, first remove bolt and screw rod so that
Two semi-circular rings are sleeved on surface pipe, connect one group of protrusion being bolted later, then another set is convex
The screw rod screw-in gone out in portion is attached with bearing, can be used the common jarring tool of the engineering sites such as hammer to carry out herein real
It is existing, it also can additionally configure a hydraulic push rod and realize more convenient quick connection.Then observable judges surface pipe later
The degree of eccentricity of situation placed in the middle, direction residing for which screw rod is excessive, then rotates the side screw rod while being clamped using tools such as pipe wrench solid
Determine other side screw rod, since screw rod and tapped through hole match, and under the action of two bearings and connecting shaft, screw rod can not edge
Own axes direction is moved, therefore with the rotation to screw rod, and the protrusion that the screw rod is passed through is driven to carry out straight line shifting
It is dynamic, to drive the side semi-circular ring to be moved, to be pushed to surface pipe so that surface pipe and ring flat-plate all by
It is gradually placed in the middle to stablize.The present invention by rotate two semi-circular rings specific orientation, can in any direction on to surface pipe
Centralizer be adjusted, can be simply and easily modified and adjust hence for the bias of surface pipe any direction
It is whole, it overcomes and needs to find guide chain different fixed points for different orientation in the prior art, be awkward, occur often
Certain orientation are the bad connection guide chain on well head chain-wales the problem of；The present invention only needs rotation screw rod that can be adjusted simultaneously
It is whole, without more people pull guide chain, greatly reduce manpower consumption, also reduce adjustment surface pipe centralizer needed for when
Between, there is substantive distinguishing features outstanding and significant progress compared to the prior art.
Preferably, the both ends of the connecting shaft are connected in the inner ring of two bearings.Axis connection is connected in this programme
In bearing inner ring, therefore two screw rods are connected on the outer shroud of two bearings, improve the structural stability of the present invention.
Preferably, several fixture blocks being uniformly distributed circumferentially also are fixed in the semi-circular ring bottom surface.The fixture block is for blocking
It is located at the outside of riser pipe, since each fixture block annular is uniformly distributed, when each fixture block fits with riser pipe lateral wall
When, entire ring flat-plate is also just placed centrally, therefore the setting that this programme passes through fixture block, additionally it is possible to the placement feelings of two semi-circular rings
Condition carries out auxiliary judgment, and situation placed in the middle is quickly confirmed convenient for worker.
Preferably, the fixture block is wedge block, the center of circle of a side plane face semi-circular ring of the wedge block.Pass through wedge
One side plane in the shape block face semi-circular ring center of circle, makes the plane be resisted against the outer surface of riser pipe in the operating condition, makes
Between fixture block and riser pipe for line contact and non-face contact, to greatly improve the present invention use when to semi-circular ring
Adjustment capability is rotated, consequently facilitating flexibly adjustment cylinder direction, to the centralizer of more flexible adjustment surface pipe.
Preferably, the connecting shaft is made by cemented carbide material.The intensity and bearing capacity of connecting shaft are improved, really
Protecting connecting shaft when grouting weight is larger inside surface pipe can also be carried, and the safety in utilization of the present invention is improved.
Preferably, several reinforcing ribs are fixed in the connecting shaft.The intensity and bearing capacity of connecting shaft are improved, safety is improved
With stability.
Compared with prior art, the present invention having the following advantages and advantages：
1, the present invention is convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer, in the effect of two bearings and connecting shaft
Under, screw rod can not be moved along own axes direction, therefore with the rotation to screw rod, the protrusion for driving the screw rod to be passed through
Portion moves linearly, to drive the side semi-circular ring to be moved, to be pushed to surface pipe so that surface layer covers
Pipe and ring flat-plate are all gradually placed in the middle stable.
2, the present invention passes through the specific of two semi-circular rings of rotation convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer
Orientation, can in any direction on the centralizer of surface pipe is adjusted, hence for surface pipe any direction
Bias simply and easily can be modified and adjust, and overcome and need to seek guide chain for different orientation in the prior art
Different fixed points is looked for, is awkward, occurs certain orientation often the bad connection guide chain on well head chain-wales the problem of.
3, the present invention criticizes brill ring flat-plate convenient for improving the offshore oilfield of centralizer, it is only necessary to which rotating screw rod can be adjusted
It is whole, without more people pull guide chain, greatly reduce manpower consumption, also reduce adjustment surface pipe centralizer needed for when
Between, there is substantive distinguishing features outstanding and significant progress compared to the prior art.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the upward view of the specific embodiment of the invention；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the outside schematic diagram of a semi-circular ring in the specific embodiment of the invention.
Label and corresponding parts title in attached drawing：
1- semi-circular rings, 2- protrusions, 3- bolts, 4- connecting shafts, 5- bearings, 6- screw rods, 7- tapped through holes, 8- fixture blocks,
9- reinforcing ribs.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1：
Offshore oilfield convenient for improving centralizer as shown in Figure 1 to Figure 3 criticizes brill ring flat-plate, including two semi-circular rings 1,
The both ends of the semi-circular ring 1 are respectively provided with the protrusion 2 radially stretched out, and through-hole 7 is threaded on the protrusion 2,
Protrusion 2 in two semi-circular rings 1 includes two groups of face respectively, passes through bolt 3 between one group of protrusion 2 facing each other
It connects, connecting shaft 4 is set between another group of protrusion 2 facing each other, and the both ends of connecting shaft 4 are separately connected two bearings 5, institute
One end connecting screw 6 of the bearing 5 far from connecting shaft 4 is stated, the screw rod 6 connected on two bearings 4 is each passed through the convex of respective face
Go out the tapped through hole 7 in portion 2, the screw rod 6 matches with the tapped through hole 7.The both ends of the connecting shaft 4 are connected to
In the inner ring of two bearings 5.Several fixture blocks 8 being uniformly distributed circumferentially also are fixed in the bottom surface of the semi-circular ring 1.The fixture block
8 be wedge block, the center of circle of a side plane face semi-circular ring 1 of the wedge block.The connecting shaft 4 is by cemented carbide material system
It forms.Several reinforcing ribs 9 are fixed in the connecting shaft 4.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (6)
1. convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer, including two semi-circular rings (1), the semi-circular ring (1)
Both ends be respectively provided with the protrusion (2) radially stretched out, through-hole (7), two semicircles are threaded on the protrusion (2)
Protrusion (2) in ring body (1) includes two groups of face respectively, which is characterized in that between one group of protrusion facing each other (2)
It is connected by bolt (3), setting connecting shaft (4) between another group of protrusion facing each other (2), the both ends point of connecting shaft (4)
Not Lian Jie two bearings (5), one end connecting screw (6) of the bearing (5) far from connecting shaft (4) connect on two bearings (4)
Screw rod (6) be each passed through the tapped through hole (7) on the protrusion (2) of respective face, the screw rod (6) and the tapped through hole
(7) match.
2. the offshore oilfield according to claim 1 convenient for improving centralizer criticizes brill ring flat-plate, which is characterized in that the company
The both ends of spindle (4) are connected in the inner ring of two bearings (5).
3. the offshore oilfield according to claim 1 convenient for improving centralizer criticizes brill ring flat-plate, which is characterized in that described half
Several fixture blocks (8) being uniformly distributed circumferentially also are fixed in the bottom surface of torus (1).
4. the offshore oilfield according to claim 3 convenient for improving centralizer criticizes brill ring flat-plate, which is characterized in that the card
Block (8) is wedge block, the center of circle of a side plane face semi-circular ring (1) of the wedge block.
5. the offshore oilfield according to claim 1 convenient for improving centralizer criticizes brill ring flat-plate, which is characterized in that the company
Spindle (4) is made by cemented carbide material.
6. the offshore oilfield according to claim 1 convenient for improving centralizer criticizes brill ring flat-plate, which is characterized in that the company
Several reinforcing ribs (9) are fixed in spindle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101629.3A CN108343394A (en) | 2018-02-01 | 2018-02-01 | Convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101629.3A CN108343394A (en) | 2018-02-01 | 2018-02-01 | Convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108343394A true CN108343394A (en) | 2018-07-31 |
Family
ID=62958804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101629.3A Withdrawn CN108343394A (en) | 2018-02-01 | 2018-02-01 | Convenient for improving the offshore oilfield batch brill ring flat-plate of centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108343394A (en) |
-
2018
- 2018-02-01 CN CN201810101629.3A patent/CN108343394A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180731 |
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| WW01 | Invention patent application withdrawn after publication |