CN2934551Y - Suspension type falling-proof supporting device - Google Patents
Suspension type falling-proof supporting device Download PDFInfo
- Publication number
- CN2934551Y CN2934551Y CN 200620132356 CN200620132356U CN2934551Y CN 2934551 Y CN2934551 Y CN 2934551Y CN 200620132356 CN200620132356 CN 200620132356 CN 200620132356 U CN200620132356 U CN 200620132356U CN 2934551 Y CN2934551 Y CN 2934551Y
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- CN
- China
- Prior art keywords
- basket
- pressure cap
- centralizer body
- junk
- canvassed
- 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
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Abstract
A hanging device for falling-object prevention and stabilization could stabilize underground pipe, prevent pump pipe wear and stop and canvass for falling-object. The lower part of the central pipe is connected with an upright body through a screw thread. An axial groove is uniformly distributed on the outer surface of the upright body, in which a spring and an upright block are arranged, and a chuck ring is packed on the top of the upright body and is compressed on the top of the upright block. A pressure cap solicit basket is cylinder-shaped and the lower part has a ring-shaped bottom, under which an internal thread is arranged. The pressure cap solicit basket gets through the top of the central pipe, the ring-shaped bottom on the lower part of which is compressed on the boss of the central pipe and then is connected with the upright body through a screw thread. A safety pin is arranged in the threaded connection between the pressure cap solicit basket and the upright body. An adjustable joint, a steel ball and a disc chuck form a spherical one-way valve. The tool avoids the liquid impact on the small falling-object with a high canvassing success rate. Hung on the bottom of the oil production tube, avoiding damage of casing pipe and unnecessary beating releasing construction and grapping releasing construction, therefore to reduce cost and increase efficiency.
Description
Technical field
The utility model relates to special tool under a kind of oil well.Be a kind of down-hole string lower end that is connected, prevent the pumping pipe string wearing and tearing; Stop, canvass the special tool of all kinds of junks.
Background technology
Produce the damage of middle sleeve along with the oil field OW; And the quantity of horizontal well and sidetracked hole is more and more, in production and the underground work maintenance of recovering the oil, and bar class junk, tubing junk, rope class junk and small articles junk, the accident that falls into net horizontal section, sidetracked hole section is also more and more.It is very big to salvage the trouble of lost tool in hole difficulty, and the success rate of thoroughly removing junk is very low.Therefore, horizontal well and sidetracked hole at net horizontal section or more than the sidetracked hole section, are lowered to y445 series back-off packer for preventing trouble of lost tool in hole at present, suppress with cementing truck and give up, and form distance piece, prevent that junk from falling into net horizontal section or sidetracked hole section.Though the method can prevent junk and fall into net horizontal section or sidetracked hole section,, all kinds of packers all are to be supported on the sleeve pipe by slip insert, in various degree sleeve pipe has been caused infringement, shortened the application life of sleeve pipe.In addition, when carrying out the construction of net horizontal section or sidetracked hole section afterwards, necessary lower tubular column, the band fishing tool is pulled anti-junk back-off packer out; Then, carry out the construction in net horizontal section or the sidetracked hole section again, after construction finishes in net horizontal section or sidetracked hole section, be lowered to anti-junk back-off packer once more and prevent junk.The anti-junk back-off packer that uses is disposable instrument at present, no matter service time length, can not reuse after pulling out, increased self tool expense, fishing tool expense and given up and operation maintenance cost such as salvaging, prolong the activity duration simultaneously, influenced the oil well crude output.Anti-junk back-off packer only plays buffer action, only prevents that junk from can not enter net horizontal section or sidetracked hole section.Sometimes the small articles junk falls behind the well, and it is very big to salvage difficulty, and it is very low to drag for the rate of obtaining, and gives down that the step construction has caused difficulty, sometimes in addition current repair equipment can't salvage, only employ the overhaul facilities maintenance construction, increased the operation maintenance cost greatly.
In the producing well that submersible electric pump recovers the oil, strain relief clamp and guard shield be subjected to casing programme, derrick footing, problems affect such as lance basis, construction tool, construction quality and submerged electric oil pump well from removing the tubing string operation, the influence of the specific question that well head can't seal, strain relief clamp and guard shield and all kinds of small articles junk often fall in the well, have brought more burden for later all kinds of constructions.
In bar oil recovery producing well was arranged, because the reciprocating motion of piston, the pumping pipe string bottom was when piston stroking upward, and the pumping pipe string bottom is under the effect of piston stroking upward power, and the pumping pipe string bending has caused the tubing string wearing and tearing; Carry duty cycle in the shortening, reduced crude output in the unit interval.
The utility model content:
The purpose of this utility model is to provide a kind of suspension type to prevent the junk erection device, hangs on the flow string bottom, stops that promptly all kinds of junks fall into the sidetracked hole section of the net horizontal section of horizontal well, sidetracked hole; Can canvass the small articles junk again, avoid unnecessary beating to give up, drag for the construction of giving up; Can also set upright down-hole string, prevent that crooked wearing and tearing of pumping pipe string and submersible electric pump tubing string cable from squeezing wound.
The utility model is achieved in that
Suspension type is prevented the junk erection device, and central tube bottom and centralizer body screwed connection have the circumference boss on central tube screw thread top.Centralizer body upper end endoporus is greater than the boss external diameter, and centralizer body upper end inner hole sleeve is outside the central tube boss.The centralizer body outer wall is evenly distributed with axial notch, and the quantity of axial notch is 4; Spring leaf and wiper block are arranged in the axial notch, and pressure ring is enclosed within the centralizer body upper end and is pressed in the wiper block upper end.Wiper block can be movable in four axial notches of centralizer body outer wall under spring leaf promotes.Pressure cap is canvassed basket for cylindric, and the bottom has at the bottom of the ring-type, and there is internal thread the ring-type bottom.Pressure cap canvass the basket penetrate from central tube top, pressure cap canvass the basket bottom ring-type base pressure on the boss of central tube with the centralizer body screwed connection, be pressed on the pressure ring simultaneously.Pressure cap is canvassed basket has safety pin with centralizer body screwed connection place.Reducer union and the screwed connection of central tube top and welding have ball valve seat and steel ball, reducer union and top connection screwed connection and welding in the reducer union, floral disc is welded in the top connection, blocks steel ball.Reducer union, steel ball and floral disc are formed a ball valve.
For the liquid that pressure cap is canvassed in the basket can flow out, pressure cap is canvassed a basket wall bottom tap hole.
For on when carrying the anti-junk erection device of suspension type, bit freezing can not take place, pressure cap is canvassed a basket upper end open place axial bar shaped gap, the quantity of bar shaped gap is at 8, the width of bar shaped gap is at the 3-5 millimeter, length is between the 60-100 millimeter.
The utility model beneficial effect is:
1, this anti-junk erection device connected mode has adopted sealing thread, screws the back and is difficult for threading off, and adopts the insurance of three level securities simultaneously, as a whole structure behind the finished product, and well also is convenient to salvage even accident falls.
2, centralizer body and wiper block are rational in infrastructure, also can not cause wiper block and spring leaf to come off for the serious well of corrosion.
3, this anti-junk erection device center is the tubular structure of band ball-and-seat, be the circulation of tubing string liquid when descending, canvassing a basket side has tap hole, is the circulation of tubing string liquid when up, the impact of liquid when having avoided lower tubular column has guaranteed the success rate of canvassing of little junk.
4, this is set upright and canvasses device and hang on flow string bottom, has avoided the construction of giving up is given up, dragged in the damage and unnecessary the beating of sleeve pipe.
Can be widely used in the submersible electric pump oil recovery flow string of the oil pumping flow string bottom of oilfield horizontal well, sidetracked hole and all kinds of wells, stop that all kinds of junks fall into the sidetracked hole section of the net horizontal section of horizontal well, sidetracked hole; Can canvass the small articles junk again; Can also set upright down-hole string, prevent that crooked wearing and tearing of pumping pipe string and submersible electric pump cable from being squeezed wound by tubing string.
Description of drawings
Accompanying drawing is a structural profile schematic diagram of the present utility model.
Among the figure, 1. centralizer body, 2. central tube, 3. spring leaf, 4. wiper block, 5. pressure ring, 6. pressure cap canvass the basket, 7. safety pin, 8. reducer union, 9. steel ball, 10. floral disc, 11. top connections.
The specific embodiment
Embodiment: consult accompanying drawing.Be applicable to that with one external diameter is that 73 millimeters the anti-junk erection device of suspension type is an example, describes.Central tube (2) external diameter is 60 millimeters, 1038 meters of length.The bottom of central tube (2) and centralizer body (1) screwed connection.Centralizer body (1) internal diameter (56) millimeter, 114 millimeters of external diameters.The circumference boss is arranged at the top at central tube (2) screw thread, 72 millimeters of the external diameters of circumference boss.Centralizer body (1) upper end endoporus is greater than 1 millimeter of boss external diameter, and centralizer body (1) upper end inner hole sleeve is outside central tube (2) boss, and centralizer body (1) outer wall is evenly distributed with 4 axial notches, axial notch wide 25 millimeters, 121 millimeters of length; Spring leaf (3) and wiper block (4) are arranged respectively in the axial notch, and pressure ring (5) is enclosed within centralizer body (1) upper end and is pressed in wiper block (4) upper end.Make wiper block (4) can not break away from centralizer body (1) outer wall axial notch.Pressure cap is canvassed basket (6) for cylindric, 114 millimeters of diameters, and 650 millimeters of length, pressure cap is canvassed basket (6) bottom and is welded with at the bottom of the ring-type, and there is internal thread the ring-type bottom.Pressure cap is canvassed basket (6) wall bottom 8 tap holes, and the diameter of each tap hole is 10 millimeters.Pressure cap is canvassed basket (6) upper end open place axial bar shaped gap, and the quantity of bar shaped gap is 8, and the width of bar shaped gap is at 4 millimeters, and length is at 80 millimeters.Pressure cap canvass the basket (6) penetrate from central tube (2) top, pressure cap canvass the basket (6) bottom ring-type base pressure on the boss of central tube (2) with centralizer body (1) screwed connection, be pressed in simultaneously on the pressure ring (5).Pressure cap is canvassed basket (6) has safety pin (7) with centralizer body (4) screwed connection place, and safety pin (7) employing screw-type fixedly pressure cap is canvassed basket (6) and centralizer body (4).Reducer union (8) and central tube (2) top screwed connection and welding have ball valve seat and steel ball (9) in the reducer union (8), reducer union (8) and top connection (11) screwed connection and welding, and floral disc (10) is welded in the top connection (11).Reducer union (8), steel ball (9) are formed a ball valve with floral disc (10).The effect of one way valve is to play plugging action when tubing string is static or up; Become the circulation of liquid when tubing string is descending.
For improve pressure cap canvass the basket (6) canvass success rate, pressure cap canvass the basket (6) upper opening diameter greater than pressure cap canvass the basket (a 6) body diameter.Little junk is arranged from falling in the well, at first canvass basket (6) upper opening place, fall into pressure cap then and canvass in the basket (6) by pressure cap.Canvassed out ground last carrying when suspension type is prevented the junk erection device, guaranteed to canvass the junk success.
Claims (5)
1, the anti-junk erection device of a kind of suspension type, canvassing basket (6) by top connection (11), reducer union (8), central tube (2), centralizer body (1), spring leaf (3), wiper block (4), pressure cap forms, it is characterized in that: central tube (2) bottom and centralizer body (1) screwed connection, the circumference boss is arranged at the top at central tube (2) screw thread, centralizer body (1) upper end endoporus is greater than the boss external diameter, centralizer body (1) upper end inner hole sleeve is outside central tube (2) boss, centralizer body (1) outer wall is evenly distributed with axial notch, and the quantity of axial notch is 4; Spring leaf (3) and wiper block (4) are arranged respectively in the axial notch, pressure ring (5) is enclosed within centralizer body (1) upper end and is pressed in wiper block (4) upper end, pressure cap is canvassed basket (6) for cylindric, the bottom has at the bottom of the ring-type, there is internal thread the ring-type bottom, pressure cap is canvassed basket (6) and is penetrated from central tube (2) top, pressure cap canvass the basket (6) bottom ring-type base pressure on the boss of central tube (2) with centralizer body (1) screwed connection, be pressed in simultaneously on the pressure ring (5), pressure cap is canvassed basket (6) has safety pin (7) with centralizer body (4) screwed connection place, reducer union (8) and central tube (2) top screwed connection and welding, ball valve seat and steel ball (9) are arranged in the reducer union (8), reducer union (8) and top connection (11) screwed connection and welding, floral disc (10) is welded in the top connection (11), reducer union (8), steel ball (9) is formed a ball valve with floral disc (10).
2, the anti-junk erection device of suspension type according to claim 1, it is characterized in that: centralizer body (1) outer wall is evenly distributed with 4 axial notches, and spring leaf (3) and wiper block (4) are arranged respectively in the axial notch.
3, the anti-junk erection device of suspension type according to claim 1, it is characterized in that: pressure cap is canvassed basket (6) wall bottom tap hole.
4, the anti-junk erection device of suspension type according to claim 1, it is characterized in that: pressure cap is canvassed basket (6) upper end open place axial bar shaped gap, the quantity of bar shaped gap is at 8, and the width of bar shaped gap is at the 3-5 millimeter, and length is between the 60-100 millimeter.
5, the anti-junk erection device of suspension type according to claim 1, it is characterized in that: pressure cap is canvassed basket (6) upper opening diameter and is canvassed basket (6) body diameter greater than pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620132356 CN2934551Y (en) | 2006-08-16 | 2006-08-16 | Suspension type falling-proof supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620132356 CN2934551Y (en) | 2006-08-16 | 2006-08-16 | Suspension type falling-proof supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2934551Y true CN2934551Y (en) | 2007-08-15 |
Family
ID=38351240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620132356 Expired - Fee Related CN2934551Y (en) | 2006-08-16 | 2006-08-16 | Suspension type falling-proof supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2934551Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183151B (en) * | 2007-11-28 | 2010-06-02 | 杭州瑞利声电技术公司 | Bottom hole falling article ultrasound image-forming detection method and apparatus |
| CN101250984B (en) * | 2007-11-14 | 2011-03-16 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Well-washing sand prevention integrated technique tubular pile |
-
2006
- 2006-08-16 CN CN 200620132356 patent/CN2934551Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250984B (en) * | 2007-11-14 | 2011-03-16 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Well-washing sand prevention integrated technique tubular pile |
| CN101183151B (en) * | 2007-11-28 | 2010-06-02 | 杭州瑞利声电技术公司 | Bottom hole falling article ultrasound image-forming detection method and apparatus |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20100816 |