CN105201443A - Oil pipe inner stopper for putting steel wires - Google Patents
Oil pipe inner stopper for putting steel wires Download PDFInfo
- Publication number
- CN105201443A CN105201443A CN201510511623.XA CN201510511623A CN105201443A CN 105201443 A CN105201443 A CN 105201443A CN 201510511623 A CN201510511623 A CN 201510511623A CN 105201443 A CN105201443 A CN 105201443A
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- slips
- oil pipe
- steel wire
- blanking plug
- lock ring
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Abstract
The invention provides an oil pipe inner stopper for putting steel wires. The stopper comprises a hollow slip shaft, a lock ring outer cylinder and a packing element which are coaxially arranged in a working barrel sequentially, wherein an upper joint and a lower joint are respectively arranged at the upper and lower ends of the slip shaft, the upper joint is a hollow chamfering step shaft, threads are arranged at the upper end of the upper joint, and an axial chute is formed in the side wall of the lower end of the upper joint; a connecting pin connected with the slip shaft is arranged in the chute; and a slip bowl 5 is coaxially arranged on the slip shaft 8, a slip 6 is axially arranged on the slip bowl 5, and the slip shaft 8 is provided with a baffle ring 7 for restraining the slip 6. Compared with the prior art, the oil pipe inner stopper for putting steel wires, provided by the invention, has the advantages of simple structure, convenience in operation, safety and reliability and can guarantee safe, smooth and efficient operation of the construction work.
Description
Technical field
The present invention relates to a kind of Underwell packet apparatus, be specifically related to a kind of blanking plug in oil pipe thrown in for steel wire.
Background technology
Oil/gas Well is mankind's exploration and development underground petroleum and the requisite information of natural gas resource and substance channel.Oil-Gas Well Engineering, around the construction of Oil/gas Well, the fund of measuring and protecting and implementing and technology-intensive engineering, mainly comprise oil-gas exploration and development drilling and completion technology engineering, Oil/gas Well Measure and test engineering, and Oil/gas Well prevention and restoration engineering etc., be the basic link of oil-gas exploration and development.
In Oil/gas Well well workover process, in order to prevent blowout, all well control equipment to be installed, long-rangely moment closing well can be implemented to annular space when there is overflow or blowout, but some blowouts also occur in tubing string, because oil pipe connection is that fine thread connects, after there is overflow, installing wellhead cock sometimes has difficulties, and causes gas blowout accident.
Particularly construct at carbonate reservoir, construct under being often in well killing fluid constantly leakage state during well workover, in order to equilibrium strata pressure majority adopts " cage " method, during lift pipe string, in tubing string, blowout prevention annoyings well workover technology personnel always, particularly when deep-well is constructed, play one-trip string often to need for a long time, the hour of danger of blowout exists, and carrying out effectively blocking when lift pipe string to bottom in tubing string is extremely urgent problem.
Therefore, need the blanking plug in oil pipe providing a kind of structure simple, easy to operate, safe and reliable, ensure job execution safe, smooth, efficiently carry out.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of for steel wire throw in blanking plug in oil pipe, structure is simple, easy to operate, safe and reliable, ensure job execution safe, smooth, efficiently carry out.
The object of the invention is to adopt following technical proposals to realize:
A kind of blanking plug in oil pipe thrown in for steel wire provided by the invention, its improvements are, described blanking plug comprises the hollow slips axle 8, lock ring urceolus 10 and the packing element 12 that are coaxially arranged on successively in seating nipple 1; Described slips axle about 8 two ends arrange top connection 2 and lower contact 14 respectively, and described top connection 2 is the chamfering Step Shaft of hollow, and its upper end is provided with screw thread, and lower end sidewall is provided with axial slide; The connecting pin 3 be connected with slips axle 8 is provided with in described chute; Described slips axle 8 coaxially arranges slip spider 5, and described slip spider 5 axially arranges slips 6, and described slips axle 8 is provided with the shelves ring 7 for retraining slips 6.
First optimal technical scheme provided by the invention is, described slip spider 5 has the hollow straight tube of screwed hole for sidewall, its inner hole axially arranging increasing diameter; The radial equi-spaced apart in described slip spider 5 lower end arranges square hole; What in described screwed hole, setting was connected with slips axle 8 cuts off 4; Described square hole arranges axial slips 6.
Second optimal technical scheme provided by the invention is, the surfaces externally and internally of described slips 6 upper end is plane; The inner surface of its lower end is the conical surface, and external surface is provided with crown ratchet upwards.
3rd optimal technical scheme provided by the invention is, described slips axle 8 lower end is taper and its outer wall arranges screw thread, and described lock ring urceolus 10 upper end inwall is provided with the screw thread matched with described slips axle 8 lower end outer wall screw thread.
4th optimal technical scheme provided by the invention is that described top connection 2 is the chamfering Step Shaft of hollow, and its upper end is provided with screw thread, and lower end sidewall is provided with axial slide; The connecting pin 3 be connected with slips axle 8 is provided with in described chute.
5th optimal technical scheme provided by the invention is, described lock ring urceolus 10 lower end is taper, and spaced radial be equidistantly provided be connected with lower contact 14 set pin 11.
6th optimal technical scheme provided by the invention is that on described packing element 12, interval equidistantly arranges spacer ring 13, and the upper and lower end face of described spacer ring 13 is inner conical surface.
7th optimal technical scheme provided by the invention is be provided with lock ring 9 between described slips axle 8 and lower contact 14; Described lock ring 9 inwall and lower contact 14 outer wall are respectively equipped with the screw thread matched.
8th optimal technical scheme provided by the invention is, described lock ring 9 is C shape split ring.
9th optimal technical scheme provided by the invention is that described seating nipple 1 is arranged in tubing string, and its upper and lower two ends arrange tubing thread respectively, and lower end inner wall is provided with undergauge.
With immediate prior art ratio, the present invention has following beneficial effect:
1, the blanking plug in oil pipe thrown in for steel wire provided by the invention, simple to operate, and after steel wire is thrown in, when needing to set, downward jarring top connection can realize the shutoff to oil pipe.
2, the blanking plug in oil pipe thrown in for steel wire provided by the invention, plugging effect is good, after blanking plug sets, packing element can be kept to compress by lock ring.
3, the blanking plug in oil pipe thrown in for steel wire provided by the invention, adopt 4 uniform slips, and slips crown has direction, when after shutoff, when upper pressure is greater than low pressure, slips, slips axle, lock ring can move down, and packing element can better be compressed; When low pressure is greater than upper pressure, lower contact, packing element, slips axle move, slips is engaged better.
4, the blanking plug in oil pipe thrown in for steel wire provided by the invention, structure is simple, easy to operate, safe and reliable, not only has very high economy, but also has wide market prospects.
Accompanying drawing explanation
Fig. 1: provided by the invention for steel wire throw in blanking plug in oil pipe face structural representation;
Fig. 2: the structure for amplifying schematic diagram of lock ring provided by the invention;
Fig. 3: the structure for amplifying schematic diagram of slips provided by the invention;
Wherein: 1, seating nipple; 2, top connection; 3, connecting pin; 4, cut off; 5, slip spider; 6, slips; 7, shelves ring; 8, slips axle; 9, lock ring; 10, lock ring urceolus; 11, pin is set; 12, packing element; 13 spacer rings; 14, lower contact.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The blanking plug in oil pipe for steel wire input that the embodiment of the present invention provides is example, as shown in Figures 1 to 3, comprises the hollow slips axle 8, lock ring urceolus 10 and the packing element 12 that are coaxially arranged on successively in seating nipple 1; Slips axle about 8 two ends arrange top connection 2 and lower contact 14 respectively, and lower contact 14 runs through and is arranged in lock ring urceolus 10 and packing element 12: slips axle 8 coaxially arranges slip spider 5, slip spider 5 arranges axial slips 6, and slips axle 8 is provided with the shelves ring 7 for retraining slips 6.Top connection 2 is the chamfering Step Shaft of hollow, and its upper end is provided with screw thread and can be connected with steel wire instrument, and lower end sidewall is provided with axial slide, and in chute, install the connecting pin 3 be connected with slips axle 8, connecting pin 3 is straight pole.Slip spider 5 has the hollow straight tube of screwed hole for sidewall, its inner hole axially arranging increasing diameter, and the radial equi-spaced apart in slip spider 5 lower end arranges 4 square holes, what in screwed hole, installation was connected with slips axle 8 cuts off 4, cut off 4 for copper, one end is screw thread, and one end is straight pole; Square hole arranges axial slips 6, and slips 6 top is arranged in slip spider 5, can slide in bottom on slips axle 8.The surfaces externally and internally of slips 6 upper end is plane; The inner surface of its lower end is the conical surface, external surface is provided with crown ratchet upwards, instantly fashionable, jarring from the top down, be conducive to slips 6 and slips axle 8 moves downward, be convenient to packing element 12 and set, when low pressure is greater than upper pressure, lower contact 14, packing element 12, slips axle 8 have upwards movement tendency, are conducive to the occlusion of slips 6.Slips axle 8 lower end is taper and its outer wall arranges screw thread, and lock ring urceolus 10 upper end inwall is provided with the screw thread matched with slips axle 8 lower end outer wall screw thread.Lock ring urceolus 10 lower end is taper, and spaced radial be equidistantly provided be connected with lower contact 14 set pin 11, set pin 11 for copper, one end is external screw thread, and one end is straight pole.For interval on the packing element 12 of hollow rubber cylinder, the spacer ring 13 that upper and lower end face is inner conical surface is equidistantly being set.Lock ring 9 is provided with between slips axle 8 and lower contact 14; Lock ring 9 is C shape split ring, and its inwall and lower contact 14 outer wall are respectively equipped with the screw thread matched.
Wherein, seating nipple 1 is arranged in tubing string, and its upper and lower two ends arrange tubing thread respectively, and lower end inner wall is provided with undergauge.
Embodiment 1
First, lower contact 14 is clamped on vice, by packing element 12, spacer ring 13, packing element 12 loads from the top of lower contact 14 successively, lock ring urceolus 10 is loaded from lower contact 14 top, and installation sets pin 11, lock ring 9 is pushed from lower contact 14 top, and be connected with the serration screw thread in lower contact 14, clamping lock ring urceolus 10, connect slips axle 8 on lock ring urceolus 10, slips 6 is installed to inside slip spider 5, slip spider 5 and slips 6 are loaded from slips axle 8 top, shelves ring 7 is installed on slips axle 8, stationary slip 6, pin 4 is installed in the screwed hole of slip spider 5, top connection 2 is set on slips axle 8, from the chute of top connection 2, connecting pin 3 is installed in slips axle 8, namely blanking plug has been assembled.
Secondly, with the top connection 2 entering instrument under steel wire and connect blanking plug, when blanking plug is lowered into precalculated position in well, namely need in servant's tubing string match with lower contact 14 be located undergauge, downward jarring top connection 2, top connection 2 is slided and slamming down slip spider 5 on slips axle 8, cuts off simultaneously and cuts off 4; Slip spider 5 drives slips 6 and slips axle 8 to move downward, and the lock ring urceolus 10 be connected with slips axle 8 compresses packing element 12 downwards, and meanwhile, lock ring 9 locks onto in lower contact 14, makes packing element 12 keep compressive state; Through repeatedly jarring, can make packing element 12 compression-expansion completely, by the space sealing in oil pipe, slips 6 is snapped on tube inner wall, can reach the object of shutoff oil pipe.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field are to be understood that; can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, and it all should be encompassed within claims of the present invention.
Claims (10)
1., for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that: described blanking plug comprises the hollow slips axle (8) be coaxially arranged on successively in seating nipple (1), lock ring urceolus (10) and packing element (12); Described slips axle (8) arranges top connection (2) and lower contact (14), the chamfering Step Shaft that described top connection (2) is hollow in two ends up and down respectively, and its upper end is provided with screw thread, and lower end sidewall is provided with axial slide; The connecting pin (3) be connected with slips axle (8) is provided with in described chute; Described slips axle (8) coaxially arranges slip spider (5), described slip spider (5) axially arranges slips (6), and described slips axle (8) is provided with the shelves ring (7) for retraining slips (6).
2. as claimed in claim 1 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, described slip spider (5) has the hollow straight tube of screwed hole, its inner hole axially arranging increasing diameter for sidewall; The radial equi-spaced apart in described slip spider (5) lower end arranges square hole; In described screwed hole, cutting off (4) of being connected with slips axle (8) is set; Described square hole arranges axial slips (6).
3., as claimed in claim 2 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, the surfaces externally and internally of described slips (6) upper end is plane; The inner surface of its lower end is the conical surface, and external surface is provided with crown ratchet upwards.
4. as claimed in claim 3 for the blanking plug in oil pipe of steel wire input, it is characterized in that, described slips axle (8) lower end is taper and its outer wall arranges screw thread, and described lock ring urceolus (10) upper end inwall is provided with the screw thread matched with described slips axle (8) lower end outer wall screw thread.
5. as claimed in claim 1 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, described lower contact (14) runs through and is arranged in lock ring urceolus (10) and packing element (12).
6. as claimed in claim 5 for the blanking plug in oil pipe of steel wire input, it is characterized in that, described lock ring urceolus (10) lower end is taper, and spaced radial be equidistantly provided be connected with lower contact (14) set pin (11).
7. as claimed in claim 6 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, the upper interval of described packing element (12) equidistantly arranges spacer ring (13), and the upper and lower end face of described spacer ring (13) is inner conical surface.
8., as claimed in claim 7 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, between described slips axle (8) and lower contact (14), be provided with lock ring (9); Described lock ring (9) inwall and lower contact (14) outer wall are respectively equipped with the screw thread matched.
9., as claimed in claim 8 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, described lock ring (9) is C shape split ring.
10., as claimed in claim 1 for the blanking plug in oil pipe that steel wire is thrown in, it is characterized in that, described seating nipple (1) is arranged in tubing string, and its upper and lower two ends arrange tubing thread respectively, and lower end inner wall is provided with undergauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511623.XA CN105201443B (en) | 2015-08-19 | 2015-08-19 | A kind of blanking plug in oil pipe launched for steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511623.XA CN105201443B (en) | 2015-08-19 | 2015-08-19 | A kind of blanking plug in oil pipe launched for steel wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105201443A true CN105201443A (en) | 2015-12-30 |
| CN105201443B CN105201443B (en) | 2018-02-23 |
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ID=54949356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510511623.XA Active CN105201443B (en) | 2015-08-19 | 2015-08-19 | A kind of blanking plug in oil pipe launched for steel wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201443B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780874A (en) * | 2016-08-26 | 2018-03-09 | 中国石油天然气股份有限公司 | Pressure-controlled blanking plug |
| CN115749666A (en) * | 2022-11-01 | 2023-03-07 | 四川圣诺油气工程技术服务有限公司 | Underground ratchet type blanking plug |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2143542C1 (en) * | 1998-01-12 | 1999-12-27 | Акционерное общество "Татнефть" Татарский научно-исследовательский и проектный институт нефти | Packer for closing internal space in pipe string |
| CN201972658U (en) * | 2011-01-17 | 2011-09-14 | 王秀忠 | Blanking plug in oil pipe |
| CN102561988A (en) * | 2012-01-18 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter water-swelling setting plug |
| CN203308426U (en) * | 2013-04-28 | 2013-11-27 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | High-pressure-resistant removable oil pipe blanking plug |
| CN204327032U (en) * | 2014-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | A kind of blanking plug and use the blowout prevention assembly of this blanking plug |
| CN205047187U (en) * | 2015-08-19 | 2016-02-24 | 新疆华油油气工程有限公司 | A blanking plug in oil pipe for steel wire is put in |
-
2015
- 2015-08-19 CN CN201510511623.XA patent/CN105201443B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2143542C1 (en) * | 1998-01-12 | 1999-12-27 | Акционерное общество "Татнефть" Татарский научно-исследовательский и проектный институт нефти | Packer for closing internal space in pipe string |
| CN201972658U (en) * | 2011-01-17 | 2011-09-14 | 王秀忠 | Blanking plug in oil pipe |
| CN102561988A (en) * | 2012-01-18 | 2012-07-11 | 中国石油天然气股份有限公司 | Small-diameter water-swelling setting plug |
| CN203308426U (en) * | 2013-04-28 | 2013-11-27 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | High-pressure-resistant removable oil pipe blanking plug |
| CN204327032U (en) * | 2014-11-10 | 2015-05-13 | 中国石油化工股份有限公司 | A kind of blanking plug and use the blowout prevention assembly of this blanking plug |
| CN205047187U (en) * | 2015-08-19 | 2016-02-24 | 新疆华油油气工程有限公司 | A blanking plug in oil pipe for steel wire is put in |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780874A (en) * | 2016-08-26 | 2018-03-09 | 中国石油天然气股份有限公司 | Pressure-controlled blanking plug |
| CN107780874B (en) * | 2016-08-26 | 2023-11-28 | 中国石油天然气股份有限公司 | Pressure controlled blanking plug |
| CN115749666A (en) * | 2022-11-01 | 2023-03-07 | 四川圣诺油气工程技术服务有限公司 | Underground ratchet type blanking plug |
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| Publication number | Publication date |
|---|---|
| CN105201443B (en) | 2018-02-23 |
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