CN102031933B - Serial anti-fall centralizer - Google Patents
Serial anti-fall centralizer Download PDFInfo
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- CN102031933B CN102031933B CN 200910035244 CN200910035244A CN102031933B CN 102031933 B CN102031933 B CN 102031933B CN 200910035244 CN200910035244 CN 200910035244 CN 200910035244 A CN200910035244 A CN 200910035244A CN 102031933 B CN102031933 B CN 102031933B
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- main body
- rod
- righting
- fall
- centralizer
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Abstract
The invention provides a serial anti-fall centralizer, which consists of a sucker rod anti-fall device and a sucker rod centralizer. An upper joint, a combination cap, an adjusting bolt, a fastening screw, a ball seat, a connecting sleeve and a slip are arranged in an anti-fall main body; a centralizing rod and a centralizing piece which rotates around the centralizing rod are arranged in a centralizing main body; one end of a ball head of the centralizing rod in the centralizing main body is inserted into the anti-fall main body, and is movably connected to the ball seat and the slip; and the anti-fall main body is in series with the centralizing main body so as to form a sucker rod anti-fall centralizer. During underground operation, the centralizing piece rotates relative to the centralizing rod and the centralizing rod rotates relative to the anti-fall main body, so that the centralizer has the functions of the sucker rod centralizer and the sucker rod anti-fall device; and the requirement on simultaneous use of two underground tools in an oil field can be met, working reliability can be enhanced, the consumption of metal materials is lowered, production cost of a product is lowered and the centralizer is convenient for oil field workers to install and use.
Description
Affiliated technical field
The present invention relates to petroleum machinery, the new product development of Underwell oil production tool.
Background technology
Both at home and abroad in the existing oil well that adopts oil pumper, " drop-off preventer for sucker rod " and " oil pumping rod centering device " are different, the downhole tools independently separately of two kinds of functions, but in many cases, they always appear at again the down-hole together.When these two kinds of instruments use respectively, the structure that has two ends to connect with sucker rod, its coupling part inevitably will consume the workload of many metal material and machining more, the trouble when simultaneously having increased again risk that the thread connection place gets loose and oil field workman and installing.
Summary of the invention
The object of the invention is to design a kind of function that can possess simultaneously " drop-off preventer for sucker rod " and " oil pumping rod centering device ", can satisfy the new product that these two kinds of downhole tool demands are used in the oil field simultaneously again good and cheaply.
Characteristics of the present invention are that " drop-off preventer for sucker rod " and " oil pumping rod centering device " united two into one.The anticreep main body is comprised of top connection and cap, adjusting bolt, holding screw, ball seat, coupling sleeve and slips, and the righting main body is comprised of righting rod and the righting part that rotates about it; Righting rod bulb one end in the righting main body inserts in the anticreep main body, is flexibly connected with ball seat and slips, and anticreep main body and the series connection of righting main body are become a kind of sucker rod Anti-drop centralizer.
Because two union ends when the present invention has reduced two kinds of instruments of original use and connects with sucker rod in four union ends, reduced consumption and the machining amount of metal material, reduced production and use cost, and more convenient oil field client installs and uses.Righting rod is by the rotation of self, the radially rub-moment that produces in the time of directly eliminating the rotation of righting part, do not need through other part transmission, so than using simultaneously " drop-off preventer for sucker rod " and " oil pumping rod centering device " two kinds of instruments, have more reliable anticreep ability.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 1 is general structure half sectional view of the present invention.
Fig. 2 is the C-C sectional view that shows the slips end face among Fig. 1.
Part name shown in the number in the figure is as follows:
1, top connection, 2 and cap, 3, adjusting bolt, 4, holding screw, 5, ball seat, 6, coupling sleeve, 7, slips, 8, the righting part, 9, righting rod, A, anticreep main body, B, righting main body.
The specific embodiment
The present invention passes through appropriate design with " drop-off preventer for sucker rod " and " oil pumping rod centering device " two kinds of instruments, and merging becomes a kind of new instrument.Wherein: anticreep main body (A) is comprised of top connection (1) and cap (2), adjusting bolt (3), holding screw (4), ball seat (5), coupling sleeve (6) and slips (7).There is a screwed hole that diameter is larger the upper end of top connection (1), uses with the sucker rod of top to connect; Then be the less screwed hole of mid diameter, be used for installing and cap (2) and adjusting bolt (3); The lower end is the cored screw head that connects with coupling sleeve (6), in the interior smooth cylindrical hole of cored screw head ball seat (5) is housed.The lower end arc surface of ball seat (5) contacts with the bulb top of righting rod (9), and by and cap (2), adjusting bolt (3) are regulated the free gap of ball seat (5) and to the pressure of righting rod (9) bulb.Coupling sleeve (6) is close with the external diameter of top connection (1), after the internal thread hole of coupling sleeve (6) upper end docks with the lower end cored screw head of top connection (1) and pieces together tightly, with holding screw (4) location anticreep; In the shoulder hole of coupling sleeve (6) lower end slips (7) is housed.Slips (7) is the shaft sleeve parts of two full symmetrics cutting open along axis, and an end of its centre bore is with circular arc chamfering, and the bulb of teamed righting rod (9) from both sides forms and is flexibly connected; Its cylindrical cooperates with the shoulder hole of coupling sleeve (6) lower end with one-level round platform rank, and prevention slips (7) and the righting rod (9) that is clipped in wherein skid off.
Righting main body (B) is comprised of righting part (8) and (9) two kinds of parts of righting rod.One end of righting rod (9) is diameter greater than the bulb in bar footpath, uses with anticreep main body (A) to be connected; The other end is the screw head with the shaft shoulder, uses with the sucker rod of below to connect; Relatively be processed with two planes on the shaft shoulder, tighten with the spanner clip when being used for connecting; Middle uniformly bar is equipped with movable righting part (8) on the footpath.Righting part (8) is after righting rod (9) and anticreep main body (A) are assembled successfully, adopts engineering plastics directly to go up injection molded at the intermediate bar of righting rod (9), and guarantees that it can center on righting rod (9) and rotate; The outer round surface of righting part (8) uniform 3～4 helicla flutes, the angle e of spiral fluted tangent to helix and axis is advisable between 10 °～30 °, so that in centering sucker rod, can play a part to scrape cured Oil Guide in oil pipe.
The present invention in use, after two ends and sucker rod be fixedly connected with screw thread, along with sucker rod moves up and down in oil pipe; Righting part (8) is under the radial component effect that self helicla flute produces, can rotate round righting rod (9), and righting rod (9) also can rotate with respect to anticreep main body (A), the direct suffered radially rub-moment of elimination itself, in centering sucker rod, play a part to prevent sucker rod connection place thread looseness and come off.
Claims (3)
1. serial anti-fall centralizer, formed by " drop-off preventer for sucker rod " and " oil pumping rod centering device " two kinds of instruments merging, it is characterized in that: anticreep main body (A) is comprised of top connection (1) and cap (2), adjusting bolt (3), holding screw (4), ball seat (5), coupling sleeve (6) and slips (7), and righting main body (B) is comprised of righting rod (9) and the righting part (8) that rotates about it; Righting rod (9) bulb one end in the righting main body (B) inserts in the anticreep main body (A), be flexibly connected with ball seat (5) and slips (7), anticreep main body (A) and righting main body (B) series connection are become a kind of sucker rod Anti-drop centralizer.
2. serial anti-fall centralizer according to claim 1, it is characterized in that: an end of righting rod (9) is that diameter is greater than the bulb in bar footpath, the other end is the screw head with the shaft shoulder, the righting part (8) of intermediate active, be after righting rod (9) and anticreep main body (A) are assembled successfully, adopt engineering plastics directly to go up injection molded at the intermediate bar of righting rod (9); The outer round surface of righting part (8) uniform 3～4 helicla flutes, the angle e of spiral fluted tangent to helix and axis is between 10 °～30 °.
3. serial anti-fall centralizer according to claim 1 is characterized in that: slips (7) is the shaft sleeve parts of two full symmetrics cutting open along axis, and an end of its centre bore is with circular arc chamfering, and its cylindrical is with one-level round platform rank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910035244 CN102031933B (en) | 2009-09-24 | 2009-09-24 | Serial anti-fall centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910035244 CN102031933B (en) | 2009-09-24 | 2009-09-24 | Serial anti-fall centralizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102031933A CN102031933A (en) | 2011-04-27 |
| CN102031933B true CN102031933B (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910035244 Active CN102031933B (en) | 2009-09-24 | 2009-09-24 | Serial anti-fall centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102031933B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3560060A (en) * | 1968-12-18 | 1971-02-02 | Nate Morris | Rod guide and centralizer |
| US4621690A (en) * | 1985-04-12 | 1986-11-11 | Diversified Drilling Services Ltd. | Sucker rod coupling |
| CN2126308U (en) * | 1992-02-01 | 1992-12-30 | 张洪昌 | Rolling centralizing anti-drop device for sucker rod |
| CN2392910Y (en) * | 1998-12-30 | 2000-08-23 | 大港油田集团油气开发公司 | Reversible sucker-rod centralizing anti-dropping device |
| CA2315730A1 (en) * | 1999-08-06 | 2001-02-06 | Kudu Industries Inc. | Centralizer for sucker rod strings |
| CN2580091Y (en) * | 2002-09-19 | 2003-10-15 | 邢立升 | Anti-dropout centralizer |
| CN200943454Y (en) * | 2006-08-31 | 2007-09-05 | 大庆油田有限责任公司 | Taper thread anti-slip abrasive-resistant centralizer for screw pump well |
| CN101476449A (en) * | 2009-01-15 | 2009-07-08 | 北京敦华石油技术有限公司 | Aligning anti-release and anti-bias wearing apparatus used for pumping rod |
-
2009
- 2009-09-24 CN CN 200910035244 patent/CN102031933B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3560060A (en) * | 1968-12-18 | 1971-02-02 | Nate Morris | Rod guide and centralizer |
| US4621690A (en) * | 1985-04-12 | 1986-11-11 | Diversified Drilling Services Ltd. | Sucker rod coupling |
| CN2126308U (en) * | 1992-02-01 | 1992-12-30 | 张洪昌 | Rolling centralizing anti-drop device for sucker rod |
| CN2392910Y (en) * | 1998-12-30 | 2000-08-23 | 大港油田集团油气开发公司 | Reversible sucker-rod centralizing anti-dropping device |
| CA2315730A1 (en) * | 1999-08-06 | 2001-02-06 | Kudu Industries Inc. | Centralizer for sucker rod strings |
| CN2580091Y (en) * | 2002-09-19 | 2003-10-15 | 邢立升 | Anti-dropout centralizer |
| CN200943454Y (en) * | 2006-08-31 | 2007-09-05 | 大庆油田有限责任公司 | Taper thread anti-slip abrasive-resistant centralizer for screw pump well |
| CN101476449A (en) * | 2009-01-15 | 2009-07-08 | 北京敦华石油技术有限公司 | Aligning anti-release and anti-bias wearing apparatus used for pumping rod |
Non-Patent Citations (2)
| Title |
|---|
| 何志平.抽油杆扶正器的改进与应用.《石油矿场机械》.2007,第36卷(第7期),78-81. |
| 抽油杆扶正器的改进与应用;何志平;《石油矿场机械》;20070730;第36卷(第7期);1-3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102031933A (en) | 2011-04-27 |
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