CN205135488U - Oil well casing fixing device - Google Patents
Oil well casing fixing device Download PDFInfo
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- CN205135488U CN205135488U CN201520900870.4U CN201520900870U CN205135488U CN 205135488 U CN205135488 U CN 205135488U CN 201520900870 U CN201520900870 U CN 201520900870U CN 205135488 U CN205135488 U CN 205135488U
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Abstract
The utility model discloses an oil well casing fixing device belongs to oily well casing maintenance technology field. This fixing device includes: first connecting piece, second connecting piece, third connecting piece and support fixed part, first connecting piece, second connecting piece and third connecting piece overlap respectively to be established in surface casing, production casing and sleeve pipe cross to be provided with the connecting hole, it includes clamp plate, head rod, jack and second connecting rod to support fixed part, be provided with first fixed orifices and second fixed orifices on the clamp plate, the clamp plate is located second connecting piece below, third connecting piece, second connecting piece and clamp plate pass through the second connecting rod and connect, first connecting piece and clamp plate pass through the head rod and connect, the jack is located between clamp plate and the first connecting piece for a holding power of vertical direction is provided, support fixed part is provided with the multiunit along production casing's circumferencial direction. This fixing device structure is simple, the installation of being convenient for, and the efficiency of construction is high, and is with low costs.
Description
Technical field
The utility model relates to oil well casing maintenance technology field, particularly a kind of oil well casing fastening devices.
Background technology
Oil well casing mainly comprises surface pipe and is positioned at the production casing of surface pipe, and the upper end of production casing is connected with four-way junction of casing by flange, and production tree and corresponding production flow line are then connected with production casing by four-way junction of casing.In oil well normal productive process, the relative position between surface pipe, production casing and four-way junction of casing should remain unchanged.But because the reason such as surface settlement, casing deformation there will be production casing relative to the problem that surface pipe is altered.Production casing is altered and can cause production tree and corresponding production flow line bad stability, production tree and corresponding production flow line can move up and down along with the running of oil pumper, make production flow line elbow weld seam occur fatigue crack, affect the normal production of oil well.
The method that production casing is altered that prevents conventional at present mainly contains:
(1) by production casing together with surface pipe flange welding;
(2) first well mouth of oil well production flow line is all cut off, then by production casing jack-up by force, between surface pipe flange and production casing, add certain thickness annular iron again, discharge the power that production casing is altered in advance, finally again well head production flow line is welded again.
To sum up, realizing in process of the present utility model, designer finds that prior art at least exists following problem: the existing method complicated operation preventing that production casing is altered, needs the human and material resources of at substantial, and there is potential safety hazard.
Utility model content
In order to solve above-mentioned technical problem, the utility model provides that a kind of structure is simple, the oil well casing fastening devices of constructability.
Specifically, following technical scheme is comprised:
A kind of oil well casing fastening devices, described oil well casing fastening devices is used for four-way junction of casing, production casing and surface pipe to connect as a whole, prevents from production casing is altered; Described oil well casing fastening devices comprises: the first connector, the second connector, the 3rd connector and support fixation elements; Described first connector, the second connector and the 3rd connector are annular, are set in respectively on described surface pipe, production casing and four-way junction of casing, and described first connector, the second connector and the 3rd connector are provided with connecting hole; Described support fixation elements comprises pressing plate, head rod, jack and the second connecting rod; Described pressing plate is provided with the first fixing hole and the second fixing hole, described pressing plate is positioned at below described second connector; Described 3rd connector, the second connector and pressing plate are connected by described second connecting rod; Described first connector is connected by described head rod with pressing plate; Described jack between described pressing plate and described first connector, for providing the support force of vertical direction; Described support fixation elements is provided with many groups along the circumferencial direction of described production casing.
Further, described first fixing hole is screwed hole, and described second fixing hole is through hole; Described head rod and the second connecting rod are threaded rod; One end of described second connecting rod is successively through the first fixing hole penetrated after the connecting hole of described 3rd connector and the connecting hole of described second connector on described pressing plate, and the other end of described second connecting rod is fixed by nut; The two ends of described head rod are each passed through the connecting hole of the second fixing hole on described pressing plate and described first connector and are fixed by nut.
Preferably, described jack is jackscrew.
Further, described jackscrew comprises sleeve and threaded rod; Described sleeve is arranged on described first connector, and described threaded rod penetrates described first fixing hole.
Preferably, described support fixation elements is uniformly distributed along the circumferencial direction of described production casing.
Preferably, the quantity of described support fixation elements is 3 ~ 6 groups.
Preferably, the quantity of described support fixation elements is 4 groups.
Preferably, described first connector is surface pipe flange, and described second connector is for producing casing flange, and described 3rd connector is four-way junction of casing lower flange.
Preferably, the length of described pressing plate is 190mm, and wide is 60mm, and thick is 60mm.
Preferably, the internal diameter of described first fixing hole is 30mm.
The beneficial effect of the technical scheme that the utility model embodiment provides:
In the oil well casing fastening devices that the utility model embodiment provides, the first connector on surface pipe and pressing plate is located at by head rod adapter sleeve, the second connector on production casing is located at by the second connecting rod adapter sleeve, be set in the 3rd connector and pressing plate on four-way junction of casing, thus by surface pipe, production casing and four-way junction of casing connect into as a whole, utilize jack to provide the support force of vertical direction to support production casing simultaneously, thus prevent surface pipe, relative motion is there is between production casing and four-way junction of casing, and then prevent from production casing is altered.The oil well casing fastening devices that the utility model embodiment provides can when not stopping well, not affecting oil well is normally produced and install, and simple to operate, efficiency of construction is high, and cost is low, does not have potential safety hazard.Well head centering can also be made by regulating jack, solving well head eccentric wear, polished rod wearing and tearing, add packing after run wet goods problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the oil well casing fastening devices that Fig. 1 provides for the utility model embodiment;
The oil well casing fastening devices pressure plate structure schematic diagram that Fig. 2 provides for the utility model embodiment.
In figure, Reference numeral represents respectively:
1, surface pipe; 2, the first connector; 3, production casing; 4, the second connector;
5, the 3rd connector; 6, four-way junction of casing;
7, support fixation elements;
71, pressing plate; 711, the first fixing hole; 712, second fixing hole;
72, head rod; 73, jack; 74, the second connecting rod; 75, nut;
8, four-way junction of casing gate.
Detailed description of the invention
For making the technical solution of the utility model and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment 1
The present embodiment provides a kind of oil well casing fastening devices, and this oil well casing fastening devices is used for the four-way junction of casing 6 of well mouth of oil well, production casing 3 and surface pipe 1 to connect as a whole, prevents from production casing 3 is altered.
See Fig. 1 and composition graphs 2, this oil well casing fastening devices comprises: the first connector 2, second connector 4, the 3rd connector 5 and support fixation elements 7.
First connector 2, second connector 4 and the 3rd connector 5 are annular, are set in respectively on surface pipe 1, production casing 3 and four-way junction of casing 6, and the first connector 2, second connector 4 and the 3rd connector 5 are provided with connecting hole.
Support fixation elements 7 comprises pressing plate 71, head rod 72, jack 73 and the second connecting rod 74; Pressing plate 71 is provided with the first fixing hole 711 and the second fixing hole 712, pressing plate 71 is positioned at below the second connector 4.
3rd connector 5, second connector 4 and pressing plate 71 are connected by the second connecting rod 74; First connector 2 is connected by head rod 72 with pressing plate 71.
Jack 73 between pressing plate 71 and the first connector 2, for providing the support force of vertical direction;
Support fixation elements 7 is provided with many groups along the circumferencial direction of production casing 3.
The operating principle of the oil well casing fastening devices that the utility model embodiment provides is: be located at the first connector 2 on surface pipe 1 and pressing plate 71 by head rod 72 adapter sleeve, the second connector 4 on production casing 3 is located at by the second connecting rod 74 adapter sleeve, be set in the 3rd connector 5 on four-way junction of casing 6 and pressing plate 71, thus by surface pipe 1, production casing 3 and four-way junction of casing 6 connect into as a whole, utilize jack 73 to provide the support force of vertical direction to support production casing 3 simultaneously, thus prevent surface pipe 1, relative motion is there is between production casing 3 and four-way junction of casing 6, and then prevent from production casing is altered.
The oil well casing fixture structure that the utility model embodiment provides is simple, can when not stopping well, do not affect oil well is normally produced and install, and simple operation, efficiency of construction is high, and cost is low, and does not have potential safety hazard in work progress.Well head centering can also be made by regulating jack 73, solving well head eccentric wear, polished rod wearing and tearing, add packing after run wet goods problem.
In above-mentioned oil well casing fastening devices, the first fixing hole 711 on pressing plate 71 is preferably screwed hole, head rod 72 and the second connecting rod 74 are preferably threaded rod, and wherein the external screw thread of the second connecting rod 72 should match with the internal thread of the first fixing hole 711.For the ease of the installation of this fastening devices, the second fixing hole 712 on pressing plate 71 adopts through hole, also can adopt the form of keyway as shown in Figure 2.One end of second connecting rod 74 is successively through the first fixing hole 711 penetrated after the connecting hole of the 3rd connector 5 and the connecting hole of the second connector 4 on pressing plate 71, tightened by pressing plate 71 and realize the fixing of second connecting rod 74 one end, second connecting rod 74 other end is fixed by nut.The two ends of head rod 72 are each passed through the connecting hole of the second fixing hole 712 on pressing plate 71 and the first connector 2 and are fixed by nut 75.
In above-mentioned oil well casing fastening devices, the particular type of jack 73 does not have strict restriction, its modes of emplacement between the first connector 2 and pressing plate 71 is also not particularly limited, as long as can provide the support force of vertical direction and keep stable in oil well production process.From the viewpoint of convenience and the cost of operation, jack 73 is jackscrew preferably.Jackscrew mainly comprises sleeve and threaded rod two parts, relies on screw thread self-locking effect to support weight, has the advantage that structure is simple, easy to operate.Jackscrew can adopt following method to be arranged between pressing plate 71 and the first connector 2: be placed on by sleeve on the first connector 2, threaded rod is penetrated the first fixing hole 711, utilize the engagement between the internal thread of the external screw thread of jackscrew threaded rod and the first fixing hole 711 to fix to make jackscrew.
In above-mentioned oil well casing fastening devices, in order to make the overall uniform force of fastening devices, support fixation elements 7 should be uniformly distributed along the circumferencial direction of production casing 3.The quantity of support fixation elements 7 does not have particular/special requirement, is preferably 3 ~ 6 groups, more preferably 4 groups.
In above-mentioned oil well casing fastening devices, can directly using the existing surface pipe flange of oil well, production casing flange and four-way junction of casing lower flange as the first connector 2, second connector 4 and the 3rd connector 5, so just do not need additional processing and the first connector 2, second connector 4 and the 3rd connector 5 are installed, simplify the operation, reduce costs.Meanwhile, directly using the bolt of existing connection production casing flange and four-way junction of casing lower flange as the second connecting rod 74, the existing nut be positioned at below production casing flange can also be taken off, replaces with pressing plate 71.
In above-mentioned oil well casing fastening devices, the concrete size of each several part does not have strict restriction, and those skilled in the art can be arranged according to actual conditions.
Embodiment 2
The present embodiment provides a kind of oil well casing fastening devices, and this oil well casing fastening devices is used for the four-way junction of casing 6 of well mouth of oil well, production casing 3 and surface pipe 1 to connect as a whole, prevents from production casing 3 is altered.
See Fig. 1 and composition graphs 2, this oil well casing fastening devices comprises: the first connector 2, second connector 4, the 3rd connector 5 and support fixation elements 7.
First connector 2 is surface pipe flange, the second connector 4 is production casing flange, the 3rd connector 5 is four-way junction of casing lower flange.
Support fixation elements 7 comprises pressing plate 71, head rod 72, jack 73 and the second connecting rod 74; Pressing plate 71 is provided with the first fixing hole 711 and the second fixing hole 712.Support fixation elements 7 arranges four groups and with the line of four-way junction of casing 6 left and right sides gate 8 for axis of symmetry is uniformly distributed along the circumferencial direction of production casing 3.Wherein, pressing plate 71 is of a size of: long 190mm, wide 60mm, thick 60mm; First fixing hole 711 is the screwed hole of internal diameter 30mm, and the second fixing hole 712 is through hole.Jack 73 is jackscrew, comprises sleeve and diameter is the threaded rod of 30mm.Head rod 72 is threaded rod, and the second connecting rod 74 is the bolt of splicing sleeve four-way lower flange and production casing flange.
The mounting method of the fastening devices of the present embodiment is as follows:
Because surface pipe 1 and surface pipe flange are embedded in underground, therefore before this fastening devices of installation, first surface pipe flange to be dug out, and by below surface pipe flange surface and surface pipe flange 15 centimetres, soil around within 30 centimetres cleans out.By clean for the cleaning oil pollution on four-way junction of casing 6 surface.If the tubing hanger of production casing 3 (being commonly called as peckled turnip) is scurried out, need to be resetted.
After above-mentioned preparation completes, from splicing sleeve four-way lower flange and the bolt of production casing flange, select four as the second connecting rod 72 for being connected pressing plate 71.The nut be positioned at below production casing flange on this four bolts is taken off, the first fixing hole 711 of pressing plate 71 to be enclosed within bolt and to tighten thus by pressing plate 71 and four-way junction of casing lower flange and production casing Flange joint.Now, bolt does not pass from the first fixing hole 711, and the first fixing hole 711 bottom also has the screw thread of 2cm, and this part screw thread is used for fixing jackscrew.The sleeve of jackscrew is placed on surface pipe flange, the threaded rod of jackscrew is stretched in the first fixing hole 711 and to tighten.After four jackscrew are all installed, the length of adjustable screw jack supports production casing 3, observe the situation of oil pump running process production tree, when the supreme lower play phenomenon of production tree, lock nut on jackscrew threaded rod and sleeve are tightened, prevents jackscrew in manufacturing process from loosening.Then in the upper end of head rod 72, a nut 75 is installed, after the lower end of head rod 72 is passed from the second fixing hole 712 of pressing plate 71, on head rod 72, two nuts 75 are installed again, a nut 75 is installed through Kong Houzai corresponding on surface pipe flange in head rod 72 lower end.After being tightened by above-mentioned four nuts 75, the two ends of head rod 72 are fixed with pressing plate 71 and surface pipe flange respectively, thus complete the installation of this fastening devices.
Due to Geological Reasons, relative motion between production casing 3 and surface pipe 1 can not be avoided completely, also just makes the problem of altering on production casing can not thoroughly eliminate, after therefore fastening devices being installed, also need to carry out regular Inspection and maintenance, within such as every 3 ~ 4 months, carry out once.During Inspection and maintenance, when not stopping well, loosening the nut 75 of fixation clip 71 on head rod 72, observing production casing 3 and whether rocking, if rocked, regulating four jackscrew no longer to rock to production casing, more above-mentioned nut 75 is tightened.
The above is only understand the technical solution of the utility model for the ease of those skilled in the art, not in order to limit the utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an oil well casing fastening devices, described oil well casing fastening devices is used for four-way junction of casing (6), production casing (3) and surface pipe (1) to connect as a whole, prevents from production casing (3) is altered;
It is characterized in that,
Described oil well casing fastening devices comprises: the first connector (2), the second connector (4), the 3rd connector (5) and support fixation elements (7);
Described first connector (2), the second connector (4) and the 3rd connector (5) are annular, be set in respectively on described surface pipe (1), production casing (3) and four-way junction of casing (6), and described first connector (2), the second connector (4) and the 3rd connector (5) are provided with connecting hole;
Described support fixation elements (7) comprises pressing plate (71), head rod (72), jack (73) and the second connecting rod (74);
Described pressing plate (71) is provided with the first fixing hole (711) and the second fixing hole (712), described pressing plate (71) is positioned at described second connector (4) below;
Described 3rd connector (5), the second connector (4) and pressing plate (71) are connected by described second connecting rod (74); Described first connector (2) is connected by described head rod (72) with pressing plate (71);
Described jack (73) is positioned between described pressing plate (71) and described first connector (2), for providing the support force of vertical direction;
Described support fixation elements (7) is provided with many groups along the circumferencial direction of described production casing (3).
2. oil well casing fastening devices according to claim 1, is characterized in that, described first fixing hole (711) is screwed hole, and described second fixing hole (712) is through hole; Described head rod (72) and the second connecting rod (74) are threaded rod;
One end of described second connecting rod (74) is successively through the first fixing hole (711) penetrated after the connecting hole of described 3rd connector (5) and the connecting hole of described second connector (4) on described pressing plate (71), and the other end of described second connecting rod (74) is fixed by nut (75);
The two ends of described head rod (72) are each passed through the connecting hole of the second fixing hole (712) on described pressing plate (71) and described first connector (2) and are fixed by nut (75).
3. oil well casing fastening devices according to claim 2, is characterized in that, described jack (73) is jackscrew.
4. oil well casing fastening devices according to claim 3, is characterized in that, described jackscrew comprises sleeve and threaded rod; Described sleeve is arranged on described first connector (2), and described threaded rod penetrates described first fixing hole (711).
5. oil well casing fastening devices according to claim 1, is characterized in that, described support fixation elements (7) is uniformly distributed along the circumferencial direction of described production casing (3).
6. oil well casing fastening devices according to claim 1, is characterized in that, the quantity of described support fixation elements (7) is 3 ~ 6 groups.
7. oil well casing fastening devices according to claim 6, is characterized in that, the quantity of described support fixation elements (7) is 4 groups.
8. oil well casing fastening devices according to claim 1, it is characterized in that, described first connector (2) is surface pipe flange, and described second connector (4) is for producing casing flange, and described 3rd connector (5) is four-way junction of casing lower flange.
9. oil well casing fastening devices according to claim 1, is characterized in that, the length of described pressing plate (71) is 190mm, and wide is 60mm, and thick is 60mm.
10. oil well casing fastening devices according to claim 1, is characterized in that, the internal diameter of described first fixing hole (711) is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900870.4U CN205135488U (en) | 2015-11-12 | 2015-11-12 | Oil well casing fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900870.4U CN205135488U (en) | 2015-11-12 | 2015-11-12 | Oil well casing fixing device |
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|---|---|
| CN205135488U true CN205135488U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520900870.4U Active CN205135488U (en) | 2015-11-12 | 2015-11-12 | Oil well casing fixing device |
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| CN (1) | CN205135488U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322634A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of fixed device of well mouth of oil well |
| CN111305763A (en) * | 2020-03-17 | 2020-06-19 | 河北宏龙环保科技有限公司 | Oil layer casing pipe upward-channeling prevention device |
| CN113216890A (en) * | 2020-02-04 | 2021-08-06 | 中国石油天然气股份有限公司 | Fixing and adjusting device and adjusting method for oil well casing |
-
2015
- 2015-11-12 CN CN201520900870.4U patent/CN205135488U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322634A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of fixed device of well mouth of oil well |
| CN109322634B (en) * | 2017-07-31 | 2021-01-01 | 中国石油天然气股份有限公司 | Oil well wellhead fixing device |
| CN113216890A (en) * | 2020-02-04 | 2021-08-06 | 中国石油天然气股份有限公司 | Fixing and adjusting device and adjusting method for oil well casing |
| CN113216890B (en) * | 2020-02-04 | 2023-01-10 | 中国石油天然气股份有限公司 | Fixing and adjusting device and adjusting method for oil well casing |
| CN111305763A (en) * | 2020-03-17 | 2020-06-19 | 河北宏龙环保科技有限公司 | Oil layer casing pipe upward-channeling prevention device |
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