CN202926252U - Movable type anti-drop clamp for polish rod - Google Patents
Movable type anti-drop clamp for polish rod Download PDFInfo
- Publication number
- CN202926252U CN202926252U CN 201220257546 CN201220257546U CN202926252U CN 202926252 U CN202926252 U CN 202926252U CN 201220257546 CN201220257546 CN 201220257546 CN 201220257546 U CN201220257546 U CN 201220257546U CN 202926252 U CN202926252 U CN 202926252U
- Authority
- CN
- China
- Prior art keywords
- polish rod
- central hole
- polished rod
- centre bore
- gland
- 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 - Fee Related
Links
Images
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a movable type anti-drop clamp for a polish rod. The movable type anti-drop clamp for the polish rod comprises a body with a tooth plate arranged in a central hole seat of the body, wherein the tooth plate is arranged on the periphery of the polish rod in an annular mode, the tooth plate is fixed in the upper portion of the central hole seat of the body through a horizontally arranged organic glass pin, the central hole seat is in a reversed cone shape, a pressing board is horizontally arranged on the top face of the tooth plate, a pressing cover is arranged on the top face of the body which is above the pressing board, the polish rod penetrates through a central hole of the pressing cover, the tooth plate and the central hole seat, the diameter of a central hole of the pressing board is smaller than that of the central hole of the pressing cover, a section of sleeve tube is fixedly adhered to the polish rod above the pressing cover, the outer diameter of the sleeve tube is smaller than the hole diameter of the central hole of the pressing cover and bigger than the central hole diameter of the pressing board, and stand bars with magnets on the tops of the stand bars are respectively and vertically arranged on two sides of the body. The movable type anti-drop clamp for the polish rod can prevent the polish rod from dropping into a well after the polish rod is broken at the position of a work clamp, and avoids secondary accident risks caused by the block of a pump.
Description
Technical field
The utility model relates to a kind of oil field polished rod falling-proof apparatus, the particularly anti-lost card of movable polished rod.
Background technology
On the oil field a large amount of dark pumpingh wells is arranged at present, because so its well depth down-hole roofbolt fluid column is just large to the load of wellhead polish rod, the accident of interrupting polished rod in actual production process often occurs, for avoiding disconnected polished rod, the scene is taked at present to fill a fixed polish rod clamp (20 centimeters below polished rod eye) at polished rod and is fallen in the well with polished rod after preventing the work optical-rod clamp fracture of polished rod above polished rod eye, (because so the very tight tooth that can not the slippage fixture block that the work clamp must be gone up is very dark to the polished rod injury, the alternation of in the oil pumping process because down-hole load causes the polished rod fracture so that polished rod is concentrated at injury stress).Although yet can reach anti-lost effect at the anti-lost card of usefulness, another fatal problem has occurred again---be exactly when the down-hole pump holddown polished rod not descending.But pumping unit horsehead continues descending with polished rod eye, to cause outstanding rope to pile up crooked and blocked by anti-dropping clamp, in the horse head groove, deviate from, so that outstanding rope shortens, polished rod eye is crooked and depart from well head center (towards tens centimetres in oil pumper direction), when pumping unit horsehead begins when up the polished rod stretch bending or breaks wellhead packing box or threeway drawing crack or distortion.Cause oil, the stop pumping accident of running.More than the occurrence frequency of two kinds of accidents almost similar.
Summary of the invention
The purpose of this utility model is to provide a kind of movable polished rod anti-lost card, can prevent from that polished rod from having no progeny at work clamp place to fall in the well, prevents the second accident hidden danger that causes because of holddown.
The purpose of this utility model is to realize like this, the anti-lost card of a kind of movable polished rod, comprise the body that dental lamina is installed in its centre bore seat, the dental lamina ring places around the polished rod, dental lamina is fixed in the top of body centre bore seat by the organic glass pin of horizontal arrangement, said centre bore seat is back taper, be horizontally disposed with pressing plate on the end face of dental lamina, on the body end face of pressing plate top gland is installed, polished rod is from the gland centre bore, pass in dental lamina and the centre bore seat, the center bore of pressing plate is less than the center bore of gland, polished rod above gland is fixedly being pasted casing joint, the external diameter of sleeve pipe less than the aperture of gland centre bore greater than the center bore of pressing plate; The vertical rod that magnet is equipped with at its top vertically is installed respectively in the body both sides.
Gapped between the inner circle of the utility model dental lamina in course of normal operation and the polished rod, do not contact with polished rod, assembly is movable with respect to polished rod, overall weight is being suspended in midair by the strong magnets vertical rod.The motionless the utility model of polished rod is then together descending with polished rod eye when holddown, and is together up when up, avoided a series of consequences after outstanding rope is deviate from horse head.(gap of polished rod eye centre bore and polished rod is greater than the diameter at butt end of polished rod sleeve pipe, so polished rod eye can pass through up and down).And when polished rod ruptures from upper job card, polished rod then is hung on the polished rod eye motionless with the sleeve pipe downslide assembly that clings, when the sleeve pipe lower end was displaced downwardly on the pressing plate with polished rod, pressing plate was pushed and moves down, and drove dental lamina and cut off the organic glass pin, eat into the polished rod top layer along inner conical surface action downslide and to polished rod contraction fixture block tooth, anti-lost assembly can't bear gravity, and magnet and polished rod eye are thrown off, and whole anti-lost assembly is pounded to wellhead packing box with polished rod, the inner cone slips is stopped motionless, prevents that polished rod from falling in people's well.The utility model 1, can prevent that polished rod is in people's well is had no progeny at work clamp place.2, prevent the second accident hidden danger that causes because of holddown.3, owing to so this utility model when working is and the gapped polished rod that do not injure of polished rod, easy to use.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is that master of the present utility model looks the semi-section structural representation.
The specific embodiment
The anti-lost card of a kind of movable polished rod, as shown in Figure 1, comprise the body 7 that dental lamina 8 is installed in its centre bore seat 9, dental lamina 8 rings place around the polished rod 3, dental lamina 8 is fixed in the top of body centre bore seat 9 by the organic glass pin 6 of horizontal arrangement, said centre bore seat 9 is back taper, be horizontally disposed with pressing plate 5 on the end face of dental lamina 8, on the body end face of pressing plate 5 tops gland 4 is installed, polished rod 3 is from gland 4 centre bores, pass in dental lamina 8 and the centre bore seat 9, the center bore of pressing plate 5 is less than the center bore of gland 4, polished rod above gland 4 is fixedly being pasted casing joint 2, the external diameter of sleeve pipe 2 less than the aperture of gland 4 centre bores greater than the center bore of pressing plate 5; In body 7 both sides the vertical rod that magnet 1 is equipped with at its top is installed vertically respectively.Said sleeve pipe 2 is cone barrel.
Claims (1)
1. anti-lost card of movable polished rod, comprise the body that dental lamina is installed in its centre bore seat, it is characterized in that: the dental lamina ring places around the polished rod, dental lamina is fixed in the top of body centre bore seat by the organic glass pin of horizontal arrangement, said centre bore seat is back taper, be horizontally disposed with pressing plate on the end face of dental lamina, on the body end face of pressing plate top gland is installed, polished rod is from the gland centre bore, pass in dental lamina and the centre bore seat, the center bore of pressing plate is less than the center bore of gland, polished rod above gland is fixedly being pasted casing joint, the external diameter of sleeve pipe less than the aperture of gland centre bore greater than the center bore of pressing plate; The vertical rod that magnet is equipped with at its top vertically is installed respectively in the body both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257546 CN202926252U (en) | 2012-06-04 | 2012-06-04 | Movable type anti-drop clamp for polish rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220257546 CN202926252U (en) | 2012-06-04 | 2012-06-04 | Movable type anti-drop clamp for polish rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926252U true CN202926252U (en) | 2013-05-08 |
Family
ID=48216225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220257546 Expired - Fee Related CN202926252U (en) | 2012-06-04 | 2012-06-04 | Movable type anti-drop clamp for polish rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926252U (en) |
-
2012
- 2012-06-04 CN CN 201220257546 patent/CN202926252U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203905888U (en) | Mechanical retrievable packer | |
| CN106050181B (en) | Thermal extraction casing head | |
| CN202926252U (en) | Movable type anti-drop clamp for polish rod | |
| CN105089531B (en) | Oil field horizontal well oil production pipe string breaking and falling prevention well device | |
| CN210134891U (en) | Safety joint for sand-proof screen pipe and sand-proof screen pipe | |
| CN203808923U (en) | Suspension releasing packer for oil-gas water well | |
| CN104555644B (en) | The skip bucket tail rope hanger of a kind of fall arrest and tail rope anti-drop method | |
| CN204252870U (en) | Anti-breaking and anti-dropping device for polish rod of pumping well | |
| CN111119758A (en) | Use method of self-balancing under-pressure operation device adopting directional slips | |
| CN203961862U (en) | A kind of anti-lost tool | |
| CN205225157U (en) | Blowout preventer for long string | |
| CN203976108U (en) | Self-stopping thread discharge disk | |
| CN204050728U (en) | A kind of petroleum well drilling derrick disassembly and assembly safety belt suspension device | |
| CN204984304U (en) | Novel sucker rod polished rod eye | |
| CN206753514U (en) | New impacting type polish rod thread-off preventing device | |
| CN205078208U (en) | Oil field horizontal well oil production pipe string breaking and falling prevention well device | |
| CN201187265Y (en) | Double-suspension rope-suspending machine | |
| RU141765U1 (en) | Wellhead Equipment | |
| CN204782826U (en) | Sucker rod rotary apparatus | |
| CN202451079U (en) | Anti-slip device for polish rod | |
| CN210918972U (en) | Double-slip packer for oil field | |
| CN204386631U (en) | A kind of Portable protective net | |
| CN107575180B (en) | Retractable fishing anchor | |
| CN212101585U (en) | Downhole operation safety well lifting device | |
| US2008806A (en) | Safety polish rod stop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20130604 |