CN204609824U - A kind of oil field shaft mouth preventer eccentric abrasion prevention device - Google Patents
A kind of oil field shaft mouth preventer eccentric abrasion prevention device Download PDFInfo
- Publication number
- CN204609824U CN204609824U CN201520088421.4U CN201520088421U CN204609824U CN 204609824 U CN204609824 U CN 204609824U CN 201520088421 U CN201520088421 U CN 201520088421U CN 204609824 U CN204609824 U CN 204609824U
- Authority
- CN
- China
- Prior art keywords
- preventer
- bearing
- abrasion prevention
- eccentric abrasion
- inner race
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a kind of oil field shaft mouth preventer eccentric abrasion prevention device, comprise the preventer on a homemade eccentric abrasion prevention bearing and oil field shaft mouth, homemade eccentric abrasion prevention bearing is two-way biserial divergence type angular contact ball bearing structure, it is made up of two bearings outer ring, a bearing inner race, a retainer, Double-row ball, it is fastened by bolts on the upper surface of preventer, forms the shoe of preventer; The diameter of bore of bearing inner race is less than preventer diameter of bore.The utility model when drilling rod through eccentric abrasion prevention bearing inner race hole enter downhole drill deflect time, what first impact is rotating bearing inner race, even if caused bearing failure by impact damage, well head staff also can find that mistake protective capacities hindered by bearing very soon, thus change eccentric abrasion prevention bearing in time, realize again protecting object.The utility model has reasonable in design, that structure is simple, easy for installation, protective capacities is strong advantage.
Description
Technical field
The utility model relates to a kind of eccentric abrasion prevention device of oil field shaft mouth preventer, and particularly a kind of structure of oil field shaft mouth preventer eccentric abrasion prevention device, belongs to Petroleum Machinery Design manufacturing technology field.
Background technology
According to the regulation of SY/T 5964-2006 " the combination accessory Installation and Debugging of drilling well control device and maintenance " 3.3.3.3, after preventer installs, well head, rotating disk, overhead traveling crane center should be corrected, its deviation is not more than 10mm, blowout preventer set is tightened fixing with the wire rope of 16mm on the diagonal of derrick base.This standard-required is to ensure that wellhead blowout preventor group is not caused damage by drilling tool disturbance in operation.But many uncertain factors occur deviation during this standard can be caused to perform in actual production, such as:
1, every mouthful of well equipment installs the initial stage, and by correcting well head, rotating disk, overhead traveling crane reach standard-required, but along with the increase of operation later stage load, and offshore boring island basis can sedimentation gradually, thus causes a deviation and exceed standard, and drilling tool collision preventer occurs, causes preventer eccentric wear;
If 2, kelly bar is deposited, improper use, some permanent bendings can occur, but not during severe bends, personnel are difficult to find, but in the drilling process of reality, bending kelly bar frequently can impact preventer, thus causes the eccentric wear of preventer;
3, in the fast drilling stage, bore the uneven high rotating speed adding top rotary table if sent, the centrifugal force that drilling tool produces also frequently can impact preventer, causes the eccentric wear of preventer;
4, before production operation, correction well head, rotating disk, overhead traveling crane are not in place, and the eccentric wear of preventer then cannot be avoided.
If degree 025 is deposited, improper use, some permanent bending situations can be there are by drilling tool disturbance, above factor causes preventer eccentric wear, and be all that kelly bar impact preventer produces, the frequency of the speed of this eccentric wear and the inclined extent of well head, impact has direct relation.
Useless regulation is sentenced according to the inspection and maintenance >> standard of <<SY/T6160-2008 preventer, when namely the main latus rectum of preventer reaches the condition of scrapping in either direction eccentric wear amount more than 5mm, and the price about more than 40 ten thousand yuan of a set of F28-35 blowout preventer set, F35-35 blowout preventer set about more than 60 ten thousand yuan, as can be seen here, the cost causing preventer to scrap due to eccentric wear is huge, must attract great attention.
Summary of the invention
To clash into for drill pipe of oil well the present situation that preventer causes eccentric wear to be scrapped due to uncertain factor, the utility model provides a kind of oil field shaft mouth preventer eccentric abrasion prevention device.
The utility model is implemented by the following technical programs: a kind of oil field shaft mouth preventer eccentric abrasion prevention device, comprise the preventer on a homemade eccentric abrasion prevention bearing and oil field shaft mouth, described homemade eccentric abrasion prevention bearing is two-way biserial divergence type angular contact ball bearing structure, and it is made up of two bearings outer ring, a bearing inner race, a retainer, Double-row ball; Double pocket hole is provided with in described retainer; Described Double-row ball is seated in the double pocket hole of retainer; Described two bearings outer ring and a bearing inner race form two-way biserial divergence type angular contact ball bearing respectively by the angular contact raceway in body and the Double-row ball in retainer, it is characterized in that:
The described two bearings outer ring wherein upper surface of a bearing outer ring, the lower surface of another bearing outer ring is respectively provided with flange, flange is shaped with many bolts hole, end face wherein on arbitrary flange all can be used as joint face and is fastened by bolts on the upper surface of described preventer, forms the eccentric abrasion prevention device of preventer;
The diameter of bore of described bearing inner race is less than preventer diameter of bore;
Described two bearings outer ring is connected by screw, and by screwing the gap between screw adjustment bearing enclose and steel ball.
The utility model, by the textural association of an eccentric abrasion prevention bearing cheap for manufacturing cost with preventer, just can form the device of low cost protection costliness preventer.Therefore, the utility model have reasonable in design, structure is simple, easy for installation, protective capacities is strong, cost performance is high, the remarkable advantage of preventer long service life.
Accompanying drawing explanation
Accompanying drawing 1 is working state schematic representation of the present utility model;
Accompanying drawing 2 is structural representation of the present utility model.
In accompanying drawing 1,2: 1 preventer, 2 drill pipe of oil well, 3 self-control eccentric abrasion prevention bearings, 301 bearing outer rings, 302 bearing inner races, 303 Double-row balls, 304 retainers, 305 bearing outer rings, 4 screws, 5 bolts.
Detailed description of the invention
Below in conjunction with accompanying drawing, explanation is further explained to the utility model:
As shown in accompanying drawing 1,2, self-control eccentric abrasion prevention bearing 3 is fastenedly connected on the upper surface of preventer 1 by bolt 5; Self-control eccentric abrasion prevention bearing 3 is two-way biserial divergence type angular contact ball bearing structure, and it is made up of bearing outer ring 301, bearing outer ring 305, bearing inner race 302, retainer 304, Double-row ball 303; Double pocket hole is provided with in retainer 304; Double-row ball 303 is seated in the double pocket hole of retainer 304; Bearing outer ring 301, bearing outer ring 305, bearing inner race 302 form two-way biserial divergence type angular contact ball bearing respectively by the angular contact raceway in body and the Double-row ball 303 in retainer 304; The upper surface of bearing outer ring 301, the lower surface of bearing outer ring 305 are respectively provided with flange, flange is shaped with many bolts hole, end face wherein on arbitrary flange all be can be used as joint face and is fastened on by bolt 5 on the end face of preventer 1, forms the eccentric abrasion prevention device of preventer 1; The diameter of bore of bearing inner race 302 is less than preventer 1 diameter of bore; Bearing outer ring 301, bearing outer ring 305 are connected by screw 4, and regulate gap between bearing enclose and steel ball by screwing screw 4.
The utility model arranges self-control eccentric abrasion prevention bearing 3 on the upper surface of preventer 1, and make the endoporus of bearing inner race 302 be less than preventer 1 endoporus, when drill pipe of oil well 2 enters downhole drill from the hole of eccentric abrasion prevention bearing inner race 302, no matter run into what kind of uncertain factor and cause deflection, what first impact is the endoporus wall of bearing inner race 302, and bearing inner race 302 is rotary, and the point of each impact is all not quite similar, this just makes the anti-strike ability of brearing bore wall strengthen, even if when endoporus wall impacted damage cause bearing failure time, well head staff also can find that mistake protective capacities hindered by bearing very soon, thus change eccentric abrasion prevention bearing in time, realize again protecting object.
Claims (3)
1. an oil field shaft mouth preventer eccentric abrasion prevention device, comprise the preventer on a homemade eccentric abrasion prevention bearing and oil field shaft mouth, described homemade eccentric abrasion prevention bearing is two-way biserial divergence type angular contact ball bearing structure, and it is made up of two bearings outer ring, a bearing inner race, a retainer, Double-row ball; Double pocket hole is provided with in described retainer; Described Double-row ball is seated in the double pocket hole of retainer; Described two bearings outer ring and a bearing inner race form two-way biserial divergence type angular contact ball bearing respectively by the angular contact raceway in body and the Double-row ball in retainer, it is characterized in that:
The described two bearings outer ring wherein upper surface of a bearing outer ring, the lower surface of another bearing outer ring is respectively provided with flange, flange is shaped with many bolts hole, end face wherein on arbitrary flange all can be used as joint face and is fastened by bolts on the upper surface of described preventer, forms the eccentric abrasion prevention device of preventer.
2. a kind of oil field shaft mouth preventer eccentric abrasion prevention device according to claim 1, is characterized in that the diameter of bore of described bearing inner race is less than preventer diameter of bore.
3. a kind of oil field shaft mouth preventer eccentric abrasion prevention device according to claim 1, is characterized in that described two bearings outer ring is connected by screw, and by screwing the gap between screw adjustment bearing enclose and steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088421.4U CN204609824U (en) | 2015-02-09 | 2015-02-09 | A kind of oil field shaft mouth preventer eccentric abrasion prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088421.4U CN204609824U (en) | 2015-02-09 | 2015-02-09 | A kind of oil field shaft mouth preventer eccentric abrasion prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204609824U true CN204609824U (en) | 2015-09-02 |
Family
ID=53962396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088421.4U Active CN204609824U (en) | 2015-02-09 | 2015-02-09 | A kind of oil field shaft mouth preventer eccentric abrasion prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204609824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983350A (en) * | 2021-04-14 | 2021-06-18 | 盐城佰信石油机械有限公司 | Wellhead back pressure regulation and control method and device |
-
2015
- 2015-02-09 CN CN201520088421.4U patent/CN204609824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983350A (en) * | 2021-04-14 | 2021-06-18 | 盐城佰信石油机械有限公司 | Wellhead back pressure regulation and control method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204609824U (en) | A kind of oil field shaft mouth preventer eccentric abrasion prevention device | |
| US10344552B2 (en) | Rotating control device having a partition seal assembly | |
| CN202144818U (en) | Lubrication type horsehead pin for oil pumping unit | |
| CN201351460Y (en) | Sleeve wear-resistant connector | |
| CN206338322U (en) | A kind of plain radial bearing | |
| CN205063848U (en) | Sliding sleeve formula safety joint | |
| CN106351966A (en) | Novel bearing supporting device for boring machine | |
| CN204004401U (en) | Rig wireline pulley sealing configuration | |
| CN202755942U (en) | Simple blowout preventer | |
| CN205445459U (en) | Screw rod drilling tool wear -resistant coating transmission shaft | |
| CN207268161U (en) | A kind of sucker rod rotary anti-abrasion device and its connecting shaft | |
| US20170058606A1 (en) | Driveshaft catch assembly | |
| CN202055774U (en) | Sucker rod centralizer capable of proofing disconnection and eccentric wear | |
| US20210310315A1 (en) | Double-walled drill pipe and drilling machine | |
| RU120996U1 (en) | ANTI-GATE COMPENSATING DEVICE | |
| CN204553578U (en) | A kind of threaded fastening device with high-mechanic antistatic bearing | |
| CN205025406U (en) | Eccentric wellhead assembly | |
| CN204262056U (en) | Universal rolling mill vertical roll roller system connects location structure | |
| CN204553580U (en) | A kind of threaded fastening device with angle contacting high-mechanic bearing | |
| CN204535364U (en) | A kind of spring thrust catch wheel device | |
| CN203796199U (en) | Motor connection device for iron roughneck | |
| CN204238901U (en) | A kind of cementing tool of combining structure | |
| CN204041440U (en) | The gear oil pump of oil is altered in a kind of minimizing | |
| CN206903602U (en) | The anti-bias anti-dropping device of high intensity | |
| CN201401454Y (en) | Structural improvement of cross universal shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |