CN2793398Y - Folding bolt for preventing double-pipe in oil layer from running up - Google Patents
Folding bolt for preventing double-pipe in oil layer from running up Download PDFInfo
- Publication number
- CN2793398Y CN2793398Y CN200520018716.0U CN200520018716U CN2793398Y CN 2793398 Y CN2793398 Y CN 2793398Y CN 200520018716 U CN200520018716 U CN 200520018716U CN 2793398 Y CN2793398 Y CN 2793398Y
- Authority
- CN
- China
- Prior art keywords
- oil
- sleeve pipe
- layer sleeve
- oil well
- screw rod
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 238000005452 bending Methods 0.000 claims abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 19
- 230000006378 damage Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 4
- 239000002344 surface layer Substances 0.000 abstract 2
- 238000003466 welding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- Pipe Accessories (AREA)
Abstract
The utility model relates to a folding screw bolt for preventing an oil layer sleeve pipe from running up, particularly an accessory of an oil well head and the folding screw bolt is composed of a screw rod and screw caps arranged at both ends of the screw rod. The utility model is characterized in that the straight section parts at both ends of the screw rod are mutually parallel, and the middle part of the screw rod is provided with a bending part. The utility model has the advantages that the folding screw bolt is additionally arranged between a surface layer sleeve pipe on the oil well head and an oil layer sleeve pipe, the relative displacement which continuously occurs between the surface layer sleeve pipe and the oil layer sleeve pipe later can be effectively treated, an oil outflow pipe line is prevented from being cracked and broken and the regular production of an oil well is ensured. The stroke of an oil pumping unit can not have loss, and the oil well yield can not be influenced. The harm of a polished rod can not be generated by that the oil layer sleeve pipe continuously runs up, and the production time rate of the oil well is increased. The folding screw bolt has the advantages of simple structure, easy processing and manufacture, convenient installation and operation and low cost.
Description
Technical field
The utility model relates to a kind of annex of well mouth of oil well.
Prior art
On well mouth of oil well, the surface pipe upper end is equipped with the blowout preventer flange by screw thread, the production string upper end is equipped with casing flange by the screw thread on the short circuit, casing flange is bound up by bolt and big four, the left and right sides of big four is equipped with valve, and flow line connects mutually with the valve on left side or right side.Their relative position is changeless generally speaking, and oil well can carry out ordinary production.But on some oil well, for some reason, the underground bushing pulling force is too small or equal zero during as cover for seat tube head in the completion process; Perhaps because surface subsidence descends the blowout preventer flange relatively; Perhaps because of the reasons such as change of crustal stress, the production string flange of some oil wells with respect to the blowout preventer flange can on scurry a segment distance, scurry on having and to reach 200 millimeters, at this time the production string flange can promote big four and rises together, big four can spur flow line, but it is underground that flow line generally is embedded in, tend to a flow line stretch bending, drawing crack like this or break, being forced to oil well stops production, the well head that also can cause that has misaligns, make a series of accidents such as the polished rod mill is inclined to one side, well head leakage of oil, influence the oil well ordinary production; Perhaps can make and have influence on the pumping unit stroke, influence crude output; Also the meeting that has causes the damage to polished rod, rate when influencing the production of oil well.As on scurry phenomenon when taking place, if the untimely way of taking is administered, situation will be more and more serious.After running into this situation in the past, though taked with the direct method of welding since on to scurry be slowly, and the strength that rises is very big, need carry out multiple welding, workload is big, makes well head also very not attractive in appearance after the multiple welding.Other way as adopting triangle to fix, not only workload is big, and constructing, also difficulty is big.So way that does not all address this problem well for a long time.
The model utility content
The purpose of this utility model provides a kind of folding shape bolt of scurrying on the production string of administering, and uses it to administer on the production string effectively and scurries, and guarantees the oil security ordinary production.
Technical solution of the present utility model is achieved in that a kind of folding shape bolt of scurrying on the production string of administering, and is made of screw rod and the nut that is installed in two ends, and its special way is that the two ends straight section of screw rod partly is parallel to each other, and has bending in the middle part of the screw rod.
Usefulness of the present utility model is, (1) after having taken place to install this folding shape bolt on the well mouth of oil well of scurrying on the sleeve pipe additional, can administer effectively between surface pipe and the production string and to continue relative displacement takes place, prevent that drawing crack from breaking flow line, guarantee the oil well ordinary production.(2) the pumping unit stroke is incurred loss, can not influence oil well output.(3) can be because of not scurrying the injury that causes, the rate during production that has improved oil well in the production string continuation to polished rod.(4) this modular construction is simple, is easy to manufacturing, and is easy to install, and cost is low.
Description of drawings
Accompanying drawing is that the utility model is installed in the schematic representation on the well mouth of oil well.
Embodiment
The stud bolt of the M30X750 that processing and fabricating is good, 160 millimeters bend 135 degree from the lower end, again from the upper end 440 millimeters bend 135 degree, the two-part at screw rod 9 two ends are parallel to each other, be made into folding shape bolt.Concrete condition according to each well, the inflection point and the bend angle of folding shape bolt length, upper and lower end can change, folding shape bolt is installed in has been found that on the well mouth of oil well of scurrying phenomenon, its lower end is installed in the bolt hole of blowout preventer flange 1, its upper end is installed in the bolt hole of casing flange 4 and big four lower flange 5, and nut 8,10 is installed at folding shape bolt two ends, and screws, every mouthful of aboveground general installation 3-4 bar folding shape bolt gets final product, and also can increase its quantity as the case may be.Make big four lower flange 5, casing flange 4, short circuit 3, production string 2, blowout preventer flange 1 be coupled to an integral body, can not continue to take place mutual displacement again, the flow line that is connected big four right-hand member 6 (or left end 7) by valve can or not broken by drawing crack, relevant therewith accordingly other problem also can have been avoided, and can guarantee that oil security normally produces.
Claims (1)
- A kind of folding shape bolt of scurrying on the production string of administering is made of screw rod (9) and the nut (8,10) that is installed in two ends, it is characterized in that the two ends straight section of screw rod (9) partly is parallel to each other, and screw rod (9) middle part has bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520018716.0U CN2793398Y (en) | 2005-05-20 | 2005-05-20 | Folding bolt for preventing double-pipe in oil layer from running up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520018716.0U CN2793398Y (en) | 2005-05-20 | 2005-05-20 | Folding bolt for preventing double-pipe in oil layer from running up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793398Y true CN2793398Y (en) | 2006-07-05 |
Family
ID=36820543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200520018716.0U Expired - Lifetime CN2793398Y (en) | 2005-05-20 | 2005-05-20 | Folding bolt for preventing double-pipe in oil layer from running up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2793398Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035330A (en) * | 2016-02-04 | 2017-08-11 | 中国石油天然气股份有限公司 | The administering method and device altered in Casing Failure |
| CN108691515A (en) * | 2018-05-04 | 2018-10-23 | 中国石油天然气股份有限公司 | Administer the device and method altered on oil-water well oil layer casing |
| 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 |
-
2005
- 2005-05-20 CN CN200520018716.0U patent/CN2793398Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035330A (en) * | 2016-02-04 | 2017-08-11 | 中国石油天然气股份有限公司 | The administering method and device altered in Casing Failure |
| CN107035330B (en) * | 2016-02-04 | 2019-05-07 | 中国石油天然气股份有限公司 | The administering method and device altered in Casing Failure |
| 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 |
| CN108691515A (en) * | 2018-05-04 | 2018-10-23 | 中国石油天然气股份有限公司 | Administer the device and method altered on oil-water well oil layer casing |
| CN108691515B (en) * | 2018-05-04 | 2020-07-10 | 中国石油天然气股份有限公司 | Device and method for treating oil-water well oil layer casing pipe channeling |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150520 Granted publication date: 20060705 |