CN109322634B - Oil well wellhead fixing device - Google Patents
Oil well wellhead fixing device Download PDFInfo
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- CN109322634B CN109322634B CN201710643169.2A CN201710643169A CN109322634B CN 109322634 B CN109322634 B CN 109322634B CN 201710643169 A CN201710643169 A CN 201710643169A CN 109322634 B CN109322634 B CN 109322634B
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- 239000003129 oil well Substances 0.000 title abstract description 41
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 abstract description 36
- 239000002344 surface layer Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 32
- 230000008878 coupling Effects 0.000 description 16
- 238000010168 coupling process Methods 0.000 description 16
- 238000005859 coupling reaction Methods 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000005465 channeling Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000009191 jumping Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 241000191291 Abies alba Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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)
Abstract
The invention discloses an oil well mouth fixing device, and belongs to the field of oil field machinery. The device includes: the device comprises a plurality of fixing plates, a plurality of locking blocks, a plurality of first connecting components and a plurality of second connecting components which are arranged in a laminated manner; an open slot which penetrates through the fixed plate up and down and is used for accommodating an oil layer casing is formed in the fixed plate, and a port of the open slot is detachably plugged by the locking block; the lower end and the upper end of the first connecting assembly are respectively connected with a plurality of fixing plates and a first flange at the bottom of the large four-way joint; the upper end and the lower end of the second connecting assembly are respectively connected with a plurality of fixing plates and second flanges on the surface layer sleeve. The device prevents that the oil well head from scurrying effectually, has avoided oil well head to scurry the safety risk and the extra cost expenditure that cause.
Description
Technical Field
The invention relates to the field of oilfield machinery, in particular to an oil well wellhead fixing device.
Background
In the production process of an oil field, due to factors such as temperature and pressure changes of a stratum, incomplete well cementation and the like, an oil layer casing is easy to jump upwards, and then devices or components such as a large cross joint, a Christmas tree and the like which are connected with the upper end of the oil layer casing and are positioned at an oil well mouth jump upwards, which are called oil well mouth jump upwards for short. The oil well mouth is blown up to cause the oil pipe line (such as oil layer casing pipe, sucker rod, etc.) to be pulled apart, and the sealing device (such as packing box, etc.) of still making the oil well mouth wearing and tearing, this will cause oil gas to reveal, and then causes safety problems such as conflagration, environmental pollution. In addition, when the crude oil extraction operation is performed, the broken oil pipe line, the eccentric wear-occurring sucker rod and the packing box need to be repaired, which seriously affects the operation efficiency. Based on the above, it is necessary to provide a wellhead fixing device for an oil well.
In the prior art, a plurality of iron wires are adopted as oil well mouth fixing devices, the upper end of an oil layer casing is connected with a large four-way joint in an oil well mouth, a flange is arranged at the bottom of the large four-way joint, and the upper end of the large four-way joint is connected with a Christmas tree. When the oil well mouth is fixed, a plurality of iron wires are wound on the large four-way joint and the Christmas tree and are fixed with other operation equipment (such as an oil pumping unit and the like) arranged beside the oil well mouth, so that the oil well mouth is prevented from channeling upwards.
The inventor finds that the prior art has at least the following problems:
after the prior art uses the iron wire to fix the oil well mouth, when the oil well mouth is scurried, the iron wire is broken easily, and the effect of fixing the oil well mouth is poor.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide the oil well mouth fixing device with good effect of fixing the oil well mouth. The specific technical scheme is as follows:
the embodiment of the invention provides an oil well wellhead fixing device, which comprises: the device comprises a plurality of fixing plates, a plurality of locking blocks, a plurality of first connecting components and a plurality of second connecting components which are arranged in a laminated manner;
an open slot which penetrates through the fixed plate up and down and is used for accommodating an oil layer casing is formed in the fixed plate, and a side port of the open slot is detachably plugged by the locking block;
the lower end and the upper end of the first connecting assembly are respectively connected with the plurality of fixing plates and the first flange at the bottom of the large cross;
the upper end and the lower end of the second connecting assembly are respectively connected with a plurality of second flanges on the fixing plate and the surface casing.
Specifically, preferably, the fixing plate has a disc-shaped structure;
the open slot extends to the circle center from the outer periphery of the fixed plate along the radial direction.
Specifically, preferably, the open groove includes: a first semicircular groove and a strip-shaped groove which are connected in sequence;
the locking block is of a strip plate-shaped structure, and a second semicircular groove is formed in one end of the locking block;
when the locking block is plugged in the open slot, the second semicircular slot and the first semicircular slot are matched to form a cylindrical through slot for accommodating the oil layer casing.
Specifically, preferably, the open grooves on two adjacent fixing plates are staggered.
Specifically, preferably, an included angle of 30 to 180 degrees is formed between the central axes of the two open grooves on the two adjacent fixing plates.
Specifically, preferably, the fixing plate and the locking piece located on the same layer constitute one unit;
the locking block in the unit at the top layer is connected with the fixing plate in the unit at the adjacent lower layer through a plurality of screws;
the locking block in each of the other units is connected with the fixing plate in the unit on the adjacent upper layer through a plurality of screws.
Specifically, preferably, the fixing plate and the locking block are both provided with a plurality of first fixing holes and a plurality of second fixing holes;
the first fixing hole is connected with the lower end of the first connecting component;
the second fixing hole is connected with the upper end of the second connecting component.
Specifically, it is preferable that the plurality of second fixing holes include a plurality of cylindrical holes and a kidney-shaped hole;
the cylindrical holes and the waist-shaped holes are alternately arranged on the fixing plate along the circumferential direction;
the long edge of the waist-shaped hole is parallel to the outer edge of the fixing plate.
In particular, preferably, the kidney-shaped hole crosses two adjacent through holes on the second flange.
Specifically, preferably, the first connection assembly includes: the first bolt and the two first nuts;
two ends of the first bolt respectively penetrate through the first fixing hole and the through hole in the first flange and are respectively locked by two first nuts;
the second connection assembly includes: a second bolt and two second nuts;
and two ends of the second bolt respectively penetrate through the second fixing hole and the through hole in the second flange and are respectively locked by two second nuts.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the oil well wellhead fixing device provided by the embodiment of the invention, the fixing plate is provided with the open slot for accommodating the oil layer casing pipe and the locking block for detachably plugging the port of the open slot, so that the fixing plate and the locking block can be conveniently matched and sleeved on the oil layer casing pipe. A plurality of fixed plates and big cross, a plurality of fixed plates and top casing are connected respectively through a plurality of first coupling assembling and a plurality of second coupling assembling to be connected big cross and top casing, and then prevent big cross and scurry along with the oil reservoir casing, avoided the oil well head to scurry. Through setting up a plurality of fixed plates and a plurality of locking pieces of stromatolite to cooperation a plurality of first coupling assembling and a plurality of second coupling assembling, make this fixing device fix the oil well wellhead steadily. Therefore, the fixing device provided by the embodiment of the invention has a good effect of preventing the oil well mouth from jumping upwards, and avoids the safety risk and the extra cost caused by the oil well mouth from jumping upwards.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a wellhead holding device for an oil well provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fixing plate according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lock block provided in an embodiment of the present invention.
Wherein the reference numerals denote:
1 a fixing plate is fixed on the upper surface of the frame,
101 is provided with an open slot, 101,
1011 a first semi-circular groove of the first,
the groove is in the shape of 1012 strips,
102 a first fixing hole is formed in the first fixing hole,
103 of the first fixing hole, and a second fixing hole,
2, locking the block, wherein the locking block is arranged on the lock body,
201 a second semi-circular groove, in which,
3 a first connecting component which is connected with the first connecting component,
301 of the first screw is provided with a first screw,
302 a first nut to be screwed onto the first nut,
4 a second connecting component which is connected with the first connecting component,
401 a second screw bolt is arranged on the second screw bolt,
402 a second nut to be screwed onto the first nut,
5 a first flange of the first flange, and a second flange of the second flange,
6 a second flange which is provided with a flange,
7 oil casing.
Detailed Description
Unless defined otherwise, all technical terms used in the examples of the present invention have the same meaning as commonly understood by one of ordinary skill in the art.
The surface casing is a section of casing sleeved outside the oil layer casing, is positioned below an oil well mouth stratum and fixed with a well wall through cement slurry, and the upper end of the surface casing is provided with a large flange, namely the second flange in the file, so as to be matched with workover operation or drilling operation. The upper end of the oil layer casing is connected with the large four-way, the oil layer casing can easily drive the large four-way to move upwards, and the surface layer casing can not easily move upwards.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
An embodiment of the present invention provides an oil well wellhead fixing device, as shown in fig. 1, the device includes: the device comprises a plurality of fixing plates 1, a plurality of locking blocks 2, a plurality of first connecting components 3 and a plurality of second connecting components 4 which are arranged in a laminated manner; as shown in fig. 2, an open slot 101 which penetrates through the fixed plate 1 up and down and is used for accommodating the reservoir casing 7 is formed in the fixed plate, and the lock block 2 detachably blocks a side port of the open slot 101; the lower end and the upper end of the first connecting component 3 are respectively connected with a plurality of fixing plates 1 and a first flange 5 at the bottom of the large four-way joint; the upper end and the lower end of the second connecting component 4 are respectively connected with the plurality of fixing plates 1 and a second flange 6 on the surface layer sleeve.
It should be noted that, the stacking arrangement is that a plurality of fixing plates 1 are stacked from top to bottom.
The working principle of the oil well wellhead fixing device provided by the embodiment of the invention is described as follows:
when the fixing device is applied, the open grooves 101 on the plurality of fixing plates 1 which are stacked are sleeved on the oil layer casing pipe 7 positioned between the large four-way joint and the surface layer casing pipe, and the plurality of locking blocks 2 are respectively used for detachably plugging the end parts of the open grooves 101, so that the oil layer casing pipe 7 is sleeved in the open grooves 101. Then the lower extreme and the upper end of every first coupling assembling 3 are connected with the first flange 5 of a plurality of fixed plates 1, big cross bottom respectively, the upper end and the lower extreme of every second coupling assembling 4 are connected with the second flange 6 on a plurality of fixed plates 1, the top layer sleeve pipe respectively, after a plurality of first coupling assembling 3 and a plurality of second coupling assembling 4 all connected, this fixing device installation finishes.
When the oil layer casing 7 has a channeling tendency, the large four-way is connected with the surface layer casing by the fixing device, and the surface layer casing does not generate channeling, so the large four-way forces the oil layer casing 7 not to channel, and devices or parts of other oil well mouths connected with the large four-way, such as an oil production tree, an oil well mouth sealing device and the like, do not generate channeling, so the fixing device is adopted to avoid the problems of oil pipe pipeline stretch cracking, sealing device (such as a packing box and the like) abrasion, oil gas leakage and the like caused by channeling of the oil well mouth.
According to the oil well wellhead fixing device provided by the embodiment of the invention, the opening groove 101 for accommodating the oil layer casing 7 and the locking block 2 for detachably plugging the port of the opening groove 101 are arranged on the fixing plate 1, so that the fixing plate 1 and the locking block 2 are conveniently matched and sleeved on the oil layer casing 7. Connect a plurality of fixed plates 1 and big cross, a plurality of fixed plates 1 and top casing respectively through a plurality of first coupling assembling 3 and a plurality of second coupling assembling 4 to be connected big cross and top casing, and then prevent big cross and scurry along with oil reservoir casing 7, avoided the oil well mouth to scurry. Through setting up a plurality of fixed plates 1 and a plurality of locking piece 2 of stromatolite to cooperation a plurality of first coupling assembling 3 and a plurality of second coupling assembling 4, make this fixing device fix the oil well head steadily. Therefore, the fixing device provided by the embodiment of the invention has a good effect of preventing the oil well mouth from jumping upwards, and avoids the safety risk and the extra cost caused by the oil well mouth from jumping upwards.
The fixing plate 1 may be provided in various structures such as a square plate, a circular plate, or other irregular plate-shaped structures.
On the premise of easy arrangement, as shown in fig. 2, the fixing plate 1 has a disc-shaped structure; the opening groove 101 extends from the outer periphery of the fixed plate 1 to the center of the circle along the radial direction.
So set up open slot 101, conveniently make the 7 covers of oil reservoir casing pipe establish at the middle part of fixed plate 1, and then the fixed plate 1 of being convenient for is connected with first coupling assembling 3, second coupling assembling 4 steadily.
Specifically, the opening groove 101 and the locking block 2 may be configured in various structures, and on the premise of reducing the manufacturing cost based on a simple structure, as shown in fig. 2, the opening groove 101 includes: a first semicircular groove 1011 and a strip groove 1012 connected in series.
As shown in fig. 3, the locking block 2 is a strip-shaped structure, and one end of the locking block is provided with a second semicircular groove 201; when the locking block 2 is blocked in the open slot 101, the second semicircular slot 201 and the first semicircular slot 1011 are matched to form a cylindrical through slot for accommodating the oil casing 7.
The structure of open slot 101 and locking piece 2 so set up is convenient for make locking piece 2 insert behind open slot 101 with open slot 101 formation be used for holding the cylindrical logical groove of reservoir casing 7 to play spacing and guard action to reservoir casing 7.
In order to make the locking piece 2 have an aesthetic feature after being matched with the open slot 101 and avoid the finger of an operator from being scratched by the locking piece 2, the other end of the locking piece 2 is set to be of an arc structure in smooth transition with the outer edge of the fixing plate 1.
In order to facilitate the installation of the plurality of fixing plates 1 and the plurality of locking blocks 2 and to enable the plurality of fixing plates 1 to be stably connected with the first connecting assembly 3 and the second connecting assembly 4, the two opening grooves 101 on two adjacent fixing plates 1 are arranged in a staggered manner.
Specifically, the central axes of two open grooves 101 on two adjacent fixed plates 1 form an included angle of 30 ° to 180 °, for example, 30 °, 50 °, 70 °, 90 °, 110 °, 130 °, 150 °, 180 °, and the like.
The "central axis" is the symmetrical bisector of the open slot 101.
There are various ways in which the locking piece 2 can detachably block the port of the open slot 101, and on the premise of easy installation and disassembly, three examples are given as follows:
as a first example: the fixing plate 1 and the locking block 2 positioned on the same layer form a unit; the locking block 2 in the top layer unit is connected with the fixing plate 1 in the adjacent lower layer unit through a plurality of screws; the locking piece 2 in each of the remaining units is connected to the fixing plate 1 located adjacent to the upper unit by a plurality of screws.
"each of the remaining units" is a unit other than the unit located at the top layer.
The mode of fixing the locking block 2 by the screw is simple, and the locking block 2 can be conveniently and detachably plugged on the port of the open slot 101. And after the locking piece 2 is fixed with the adjacent upper layer or lower layer fixing plate 1, the locking piece and the adjacent upper layer or lower layer fixing plate form an annular plate body, so that a plurality of annular plate bodies sleeved on the oil layer casing pipe 7 are controlled to be connected with the first connecting assembly 3 and the second connecting assembly 4.
As a second example: a plurality of first fixing holes 102 and a plurality of second fixing holes 103 are formed in the fixing plate 1 and the locking block 2; the first fixing hole 102 is connected with the lower end of the first connecting component 3; the second fixing hole 103 is connected to an upper end of the second connecting member 4.
During installation, the plurality of fixed plates 1 and the plurality of locking blocks 2 which are stacked are placed on the second flange 6, then the first fixed holes 102 of the plurality of fixed plates 1 and the plurality of locking blocks 2 which are stacked are aligned up and down, the second fixed holes 103 are aligned up and down, the lower ends of the first connecting assemblies 3 are respectively connected with the first fixed holes 102 which are aligned up and down, the upper ends of the first connecting assemblies are connected with the first flange 5, the upper ends of the second connecting assemblies 4 are connected with the second fixed holes 103 which are aligned up and down, and the lower ends of the second connecting assemblies are connected with the second flange 6, so that the locking blocks 2 can detachably block the ports of the open grooves 101 of the fixed plates 1 while the device provided by the embodiment of the invention is fixed.
As a third example: a plurality of first fixing holes 102 and a plurality of second fixing holes 103 are formed in the fixing plate 1 and the locking block 2; the first fixing hole 102 is connected with the lower end of the first connecting component 3; the second fixing hole 103 is connected to the upper end of the second connecting member 4, and the locking piece 2 is fixed to the wall of the opening groove 101 at both sides by friction.
By inserting the locking block 2 into the opening groove 101, and then aligning the first fixing holes 102 and the second fixing holes 103 of the stacked plurality of fixing plates 1 and the plurality of locking blocks 2 up and down, and using the lower end of the first connecting assembly 3 and the upper end of the second connecting assembly 4 to be respectively connected with the aligned plurality of first fixing holes 102 and second fixing holes 103, the locking block 2 is detachably fixed in the opening groove 101.
In order to facilitate the connection of the second connecting assembly 4 with the plurality of fixing plates 1 and the plurality of locking blocks 2, the plurality of second fixing holes 103 are aligned, as shown in fig. 2 and 3, the plurality of second fixing holes 103 include a plurality of cylindrical holes and kidney-shaped holes; the cylindrical holes and the waist-shaped holes are alternately arranged on the fixing plate 1 along the circumferential direction; the long side of the waist-shaped hole is parallel to the outer edge of the fixing plate, see figure 2.
To facilitate alignment of the second plurality of fastening holes 103 with the through holes in the second flange 6, a kidney-shaped hole spans two adjacent through holes in the second flange 6.
The length of the kidney-shaped hole is set so that the second connecting component 4 can be aligned with one through hole of the second flange 6 and moved to be aligned with the other through hole when moving from one end to the other end of the kidney-shaped hole after the upper end of the second connecting component penetrates into the kidney-shaped hole.
In the present invention, the first connecting component 3 and the second connecting component 4 may be configured in various forms, and taking the first connecting component 3 as an example, the first connecting component 3 may be a strip-shaped plate, and two ends of the strip-shaped plate are respectively provided with a hook and respectively hung in the first fixing hole 102 and the through hole on the first flange 5. The first connection member 3 may also be a bolt member.
On the premise of easy arrangement and cost saving, as shown in fig. 1, the first connecting assembly 3 includes: a first bolt 301, and two first nuts 302; two ends of the first bolt 301 respectively pass through the first fixing hole 102 and the through hole on the first flange 5, and are respectively locked by two first nuts 302.
The second connecting assembly 4 includes: a second bolt 401, and two second nuts 402; two ends of the second bolt 401 respectively pass through the second fixing hole 103 and the through hole of the second flange 6, and are respectively locked by two second nuts 402.
After the first bolt 301 passes through the first fixing hole 102 aligned up and down, the lower end of the first bolt 301 is locked by the first nut 302, the first nut 302 abuts against the bottom wall of the fixing plate 1 and the locking block 2 which are positioned at the bottom layer, the upper end of the first bolt 301 penetrates through the through hole of the first flange 5, is locked by the other first nut 302, and abuts against the top wall of the first flange 5. Similarly, after the second bolt 401 passes through the second fixing hole 103 aligned up and down, the upper end of the second bolt 401 is locked by the second nut 402 and abuts against the top wall of the fixing plate 1 and the locking block 2 located at the top layer, and the lower end of the second bolt 401 penetrates through the through hole of the second flange 6 and is locked by the other second nut 402 and abuts against the bottom wall of the second flange 6.
In order to facilitate the stable connection between the fixing plate 1 and the first and second connecting assemblies 3 and 4, inner threads are disposed on the inner walls of the first and second fixing holes 102 and 103, respectively, and are matched with the outer threads of the first and second bolts 301 and 401.
And set up first coupling assembling 3 and second coupling assembling 4 into bolt assembly, through the interval between two nuts on the adjusting bolt, can change the interval between the partly of first flange 5 and second flange 6 to the oil reservoir sleeve pipe 7, big cross, production tree etc. device or the part alignment of well head of oil well, and then prevent that the sucker rod from wearing the packing box partially.
On the premise of easy setting, cost saving and stable connection guarantee, the number of the fixing plates 1 and the number of the locking blocks 2 are two.
For convenience of description, the fixing plate 1 and the locking piece 2 located at the top layer are respectively referred to as a first fixing plate 1 and a first locking piece 2, and the fixing plate 1 and the locking piece 2 located at the bottom layer are respectively referred to as a second fixing plate 1 and a second locking piece 2.
In order to facilitate the second fixing plate 1 to stably support the first fixing plate 1, the second fixing plate 1 has a thickness thicker than that of the first fixing plate 1. For example, the thickness of the first fixing plate 1 is 15 to 25mm, such as 15mm, 17mm, 19mm, 22mm, 25mm, etc., and the thickness of the second fixing plate 1 is 26 to 35mm, such as 26mm, 27mm, 31mm, 33mm, 35mm, etc.
In the embodiment of the invention, the fixing plate 1 and the locking block 2 are both made of 45# steel, the hardness of the 45# steel is not high, the cutting processing is convenient, the large load can be borne, the price is low, and the service performance of the oil well mouth fixing device can be met.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. An oil wellhead holding device, the device comprising: the device comprises a plurality of fixing plates (1), a plurality of locking blocks (2), a plurality of first connecting assemblies (3) and a plurality of second connecting assemblies (4) which are arranged in a laminated manner;
an open slot (101) which penetrates through the fixed plate (1) up and down and is used for accommodating an oil layer casing (7) is formed in the fixed plate, and a side port of the open slot (101) is detachably plugged by the locking block (2); the fixing plate (1) is of a disc-shaped structure; the open slot (101) extends from the outer periphery of the fixed plate (1) to the circle center along the radial direction; the open grooves (101) on two adjacent fixed plates (1) are arranged in a staggered manner;
the open groove (101) includes: a first semicircular groove (1011) and a strip-shaped groove (1012) which are connected in sequence;
the locking block (2) is of a strip-shaped structure, and a second semicircular groove (201) is formed in one end of the locking block;
when the locking block (2) is blocked in the open slot (101), the second semicircular slot (201) and the first semicircular slot (1011) are matched to form a cylindrical through slot for accommodating the oil reservoir casing (7);
the fixing plate (1) and the locking block (2) which are positioned on the same layer form a unit; the locking block (2) in the unit at the top layer is connected with the fixing plate (1) in the unit at the adjacent lower layer through a plurality of screws; the locking block (2) in each of the other units is connected with the fixing plate (1) in the unit on the adjacent upper layer through a plurality of screws;
the lower end and the upper end of the first connecting assembly (3) are respectively connected with a plurality of fixing plates (1) and a first flange (5) at the bottom of the large cross joint;
the upper end and the lower end of the second connecting component (4) are respectively connected with a plurality of second flanges (6) on the fixing plate (1) and the surface casing.
2. The device as claimed in claim 1, wherein the included angle between the central axes of two open slots (101) on two adjacent fixed plates (1) is 30-180 °.
3. The device according to claim 1, characterized in that a plurality of first fixing holes (102) and a plurality of second fixing holes (103) are arranged on the fixing plate (1) and the locking block (2);
the first fixing hole (102) is connected with the lower end of the first connecting component (3);
the second fixing hole (103) is connected with the upper end of the second connecting component (4).
4. The device according to claim 3, wherein the plurality of second fixation holes (103) of the fixation plate (1) comprises a plurality of cylindrical holes and kidney-shaped holes;
the cylindrical holes and the waist-shaped holes are alternately arranged on the fixing plate (1) along the circumferential direction;
the long edge of the waist-shaped hole is parallel to the outer edge of the fixing plate (1).
5. The device according to claim 4, characterized in that said kidney-shaped hole crosses two adjacent through holes on said second flange (6).
6. The device according to claim 3, characterized in that said first connection assembly (3) comprises: a first bolt (301) and two first nuts (302);
two ends of the first bolt (301) respectively penetrate through the first fixing hole (102) and a through hole in the first flange (5), and are respectively locked by two first nuts (302);
the second connecting assembly (4) comprises: a second bolt (401) and two second nuts (402);
two ends of the second bolt (401) respectively penetrate through the second fixing hole (103) and the through hole in the second flange (6) and are respectively locked by two second nuts (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710643169.2A CN109322634B (en) | 2017-07-31 | 2017-07-31 | Oil well wellhead fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710643169.2A CN109322634B (en) | 2017-07-31 | 2017-07-31 | Oil well wellhead fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109322634A CN109322634A (en) | 2019-02-12 |
| CN109322634B true CN109322634B (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710643169.2A Active CN109322634B (en) | 2017-07-31 | 2017-07-31 | Oil well wellhead fixing device |
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| CN (1) | CN109322634B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113123751B (en) * | 2021-06-16 | 2021-09-17 | 东营市东达机械制造有限责任公司 | Thermal recovery wellhead assembly |
| CN114165184A (en) * | 2021-12-17 | 2022-03-11 | 窑街煤电集团有限公司 | Method for reinforcing coal bed gas fracturing wellhead connecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2793398Y (en) * | 2005-05-20 | 2006-07-05 | 中国石油天然气股份有限公司 | Folding bolt for treating upward movement of oil layer casing |
| CN201915863U (en) * | 2011-01-13 | 2011-08-03 | 陈鹏 | Centralizing device for wellhead reservoir casing |
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| CN2793398Y (en) * | 2005-05-20 | 2006-07-05 | 中国石油天然气股份有限公司 | Folding bolt for treating upward movement of oil layer casing |
| US8567508B2 (en) * | 2010-02-04 | 2013-10-29 | High Tech Tools, Llc | Wellhead change-out flange and method of use thereof |
| CN201915863U (en) * | 2011-01-13 | 2011-08-03 | 陈鹏 | Centralizing device for wellhead reservoir casing |
| CN204960869U (en) * | 2015-09-23 | 2016-01-13 | 克拉玛依市红都有限责任公司 | Simple and easy wellhead assembly of clamp formula |
| CN205135488U (en) * | 2015-11-12 | 2016-04-06 | 中国石油天然气股份有限公司 | Oil well casing fixing device |
| CN106884625A (en) * | 2015-12-15 | 2017-06-23 | 中国石油天然气股份有限公司 | Method for treating oil-water well oil layer casing pipe channeling |
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| CN109322634A (en) | 2019-02-12 |
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