CN114458236A - Soluble bridge plug for petroleum and natural gas drilling - Google Patents
Soluble bridge plug for petroleum and natural gas drilling Download PDFInfo
- Publication number
- CN114458236A CN114458236A CN202210052040.5A CN202210052040A CN114458236A CN 114458236 A CN114458236 A CN 114458236A CN 202210052040 A CN202210052040 A CN 202210052040A CN 114458236 A CN114458236 A CN 114458236A
- Authority
- CN
- China
- Prior art keywords
- cone
- passing hole
- liquid passing
- piston
- packing element
- 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.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000003345 natural gas Substances 0.000 title claims abstract description 9
- 239000003209 petroleum derivative Substances 0.000 title claims abstract description 8
- 238000005553 drilling Methods 0.000 title claims description 6
- 238000012856 packing Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims abstract description 7
- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 abstract description 6
- 230000005489 elastic deformation Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a soluble bridge plug for a petroleum and natural gas drill. Relates to the technical field of oil field downhole tools. The sealing device comprises an upper joint, a central pipe, a rubber cylinder, an upper cone, a lower cone, a slip and an elastic ring, wherein a sealing piston is arranged between the rubber cylinder and the upper cone; elastic rings are arranged between the upper cone and the rubber cylinder and are hollow rectangular rings made of elastic materials, and hydraulic oil is filled in the elastic rings. The invention has the following beneficial effects: set up the elastic ring who fills hydraulic oil, the elastic ring produces elastic deformation diameter grow to the outside and keeps off in the packing element outside, and the elastic ring keeps off in the both sides of packing element, prevents to reciprocate after the packing element outer fringe pressure-bearing, and according to sealed principle, the sealing performance when this measure can improve the packing element and bear the high pressure by a wide margin to improve the bearing capacity of packing element by a wide margin, slips and packing element are sequence to be set, can avoid the axial displacement that slips set in-process produced to drag the packing element and make 5 damages of packing element.
Description
The technical field is as follows:
the invention relates to the technical field of oil field downhole tools, in particular to a soluble bridge plug for an oil and gas drill.
Background art:
the bridge plug is a common underground tool in oil field production, the soluble bridge plug is the bridge plug which is made of soluble metal materials and can be dissolved by specific solution in the prior art, the bridge plug made of soluble materials can ensure that the blocking state formed by the bridge plug can be quickly removed when the bridge plug cannot be taken out or is difficult to take out, the rubber cylinder is compressed after being seated, the outer diameter of the compressed rubber cylinder is increased and is attached to the inner wall of a well pipe to play a sealing role, the bridge plug is prevented from moving in the well pipe after being seated by the slips, the requirement on the bearing capacity of the rubber cylinder in the bridge plug is higher and higher along with the continuous application of a new process, and the traditional bridge plug is difficult to meet the requirement of the new process on the performance of the bridge plug;
notice No. CN 113216899B provides a high pressure resistant soluble bridging plug, the arc has been set up, after the seat seals, the up end of three arcs and the up end of three slips piece amalgamate a complete ring surface jointly, the packing element seat seals the back, this ring surface can keep off the downside at the packing element, downward movement after preventing the outer fringe of packing element from bearing the pressure, according to sealed principle, the sealing performance when the packing element bears the high pressure can be improved by a wide margin to improve the bearing capacity of packing element by a wide margin, the problem that the packing element bearing capacity is not enough has partly been solved, the ring surface compressive capacity that this technical scheme passes through arc and slips hinged joint and constitutes is weak, at the bearing arc, the problem that the easier card caused the deblocking to become invalid in the well casing after the connecting rod warp.
The invention content is as follows:
in order to solve the problem that the pressure bearing capacity of a rubber cylinder of the conventional soluble bridge plug is insufficient, the invention provides a soluble bridge plug for an oil and gas drill.
The technical scheme of the invention is as follows: a petroleum and natural gas drill adopts a soluble bridge plug, which comprises an upper joint, a central pipe, a rubber cylinder, an upper cone, a lower cone, a slip, a pressure plate and a return spring, wherein the structures are common structures in the prior art and are not described again;
the upper connector is in threaded connection with the central tube, the upper cone is slidably mounted on the central tube, the lower cone is fixedly mounted on the central tube through the deblocking pin, the rubber cylinder is sleeved on a sleeve on the upper part of the upper cone, the upper cone is also provided with a setting piston and a piston sleeve, the piston sleeve is hermetically connected to the outer side of the upper end of the upper cone through threads, the upper end of the piston sleeve is in sliding and sealing fit with the lower end of the upper connector, the lower end of the piston sleeve is in sliding and sealing fit with the setting piston, and the setting piston is in sliding and sealing fit with the upper cone;
a section of annulus exists between the piston sleeve and the upper joint, an upper liquid passing hole is formed in the central tube at the position of the annulus between the piston sleeve and the upper joint, an annulus exists between the top of the setting piston and the piston sleeve, a middle liquid passing hole is formed in the position of the annulus on the upper cone, the lower part of the middle liquid passing hole is formed in the central tube, and a lower liquid passing hole, a position between the lower liquid passing hole and the middle liquid passing hole are formed in the central tube; sealing rings are arranged between the middle liquid passing hole and the upper liquid passing hole and between the upper cone and the central tube;
the upper joint and the piston sleeve are connected through a setting pin.
Setting between the piston and the rubber cylinder; elastic rings are arranged between the upper cone and the rubber cylinder and are hollow rectangular rings made of elastic materials.
And hydraulic oil is filled in the elastic ring.
When the upper vertebral body descends and the slip is opened in place, the middle liquid passing hole is communicated with the lower liquid passing hole.
The sliding matching surface of the piston sleeve and the upper joint is provided with one-way teeth, and the sliding matching surface of the setting piston and the upper vertebral body is provided with one-way teeth.
The invention has the following beneficial effects: 1. the rubber cylinder is provided with the elastic ring filled with hydraulic oil, the elastic ring cannot be shrunken, the elastic ring generates elastic deformation towards the outer side, the diameter of the elastic ring is increased and is blocked at the outer side of the rubber cylinder, the elastic ring is blocked at two sides of the rubber cylinder, the rubber cylinder is prevented from moving up and down after the outer edge of the rubber cylinder bears pressure, and according to the sealing principle, the sealing performance of the rubber cylinder can be greatly improved when the rubber cylinder bears high pressure, so that the pressure bearing capacity of the rubber cylinder is greatly improved;
2. in the invention, the slips and the rubber cylinder are sequentially set, so that the rubber cylinder 5 can be prevented from being damaged by pulling the rubber cylinder due to axial movement generated in the slip setting process;
3. the piston sleeve and the sliding matching surface of the upper connector are provided with one-way teeth, and the sliding matching surface of the setting piston and the upper vertebral body is provided with one-way teeth, so that the setting piston and the upper vertebral body are prevented from returning.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the seated configuration of the present invention.
In the figure, 1-upper joint, 2-central tube, 3-piston sleeve, 4-setting piston, 5-rubber cylinder, 6-upper cone, 7-pressing plate, 8-slip, 9-return spring, 10-lower cone, 11-deblocking pin, 12-elastic ring, 13-lower liquid passing hole, 14-middle liquid passing hole, 15-upper liquid passing hole, 16-setting pin, 17-one-way tooth and 18-well pipe.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 and fig. 2, the oil and gas drill using the soluble bridge plug comprises an upper joint 1, a central pipe 2, a rubber cylinder 5, an upper cone 6, a lower cone 10, a slip 8, a pressure plate 7 and a return spring 9, which are common structures in the prior art and are not described herein again;
the upper connector 1 is in threaded connection with a central tube 2, an upper cone 6 is slidably mounted on the central tube 2, a lower cone 10 is fixedly mounted on the central tube 2 through an unsealing pin 11, a rubber cylinder 5 is sleeved on a sleeve on the upper part of the upper cone 6, a setting piston 4 and a piston sleeve 3 are further mounted on the upper cone 6, the piston sleeve 3 is hermetically connected to the outer side of the upper end of the upper cone 6 through threads, the upper end of the piston sleeve 3 is in sliding and sealing fit with the lower end of the upper connector 1, the lower end of the piston sleeve 3 is in sliding and sealing fit with the setting piston 4, and the setting piston 4 is in sliding and sealing fit with the upper cone 6;
a section of annulus exists between the piston sleeve 3 and the upper joint 1, an upper liquid passing hole 15 is formed in the position, in the annulus, of the central tube 2 between the piston sleeve 3 and the upper joint 1, an annulus exists between the top of the setting piston 4 and the piston sleeve 3, a middle liquid passing hole 14 is formed in the position, in the annulus, of the upper cone 6, the lower part of the middle liquid passing hole 14 is formed in the position of the upper cone 6, a lower liquid passing hole 13 is formed in the central tube 2, and a space between the lower liquid passing hole 13 and the middle liquid passing hole 14 is formed in the central tube; sealing rings are arranged between the middle liquid passing hole 14 and the upper liquid passing hole 15, and between the upper cone 6 and the central tube 2;
the upper connector 1 and the piston sleeve 3 are connected through a setting pin 16.
Setting between the piston 4 and the rubber cylinder 5; elastic rings 12 are arranged between the upper vertebral body 6 and the rubber cylinder 5, and the elastic rings 12 are hollow rectangular rings made of elastic materials.
The elastic ring 12 is filled with hydraulic oil.
When the upper vertebral body 6 descends and the slips 8 are opened in place, the middle liquid passing hole 14 is communicated with the lower liquid passing hole 13.
After the central tube 2 is pressurized, pressure acts on the upper end of the upper cone 6 and the upper end of the setting piston 4 through the upper liquid passing hole 15, at the initial stage of the pressure action, a setting pin 16 between the piston sleeve 3 and the upper connector 1 is sheared, the piston sleeve 3 and the upper cone 6 mounted on the piston sleeve are pushed downwards to be close to the lower cone 10, so that the slips 8 are forced to move towards the direction far away from the central tube 2 to clamp the well tube 18, the slips 8 are set, when the slips 8 are set, the middle liquid inlet hole 14 is communicated with the lower liquid inlet hole 13, liquid pressure enters the upper part of the setting piston 4, the setting piston 4 downwards compresses the rubber tube 5, and then the rubber tube 5 is tightly attached to the well tube 18 to be set. When deblocking, lift center tube 2 and cut deblocking pin 11, make lower cone 10 slide downwards along center tube 2, can realize the deblocking.
After the pressure in the central tube 2 is removed, the slip 8 and the rubber cylinder 5 are sealed, and then the setting state is required to be continuously maintained, so that the upper cone 6 and the setting piston 4 are required to be ensured not to return.
In the invention, the slips 8 and the rubber cylinder 5 are sequentially set, so that the rubber cylinder 5 can be prevented from being damaged by pulling the rubber cylinder 5 due to axial movement generated in the setting process of the slips 8.
In the process of pressing and setting the rubber cylinder 5, the setting piston 4 presses the elastic ring 12 on the upper surface to deform; go up the elastic ring 12 deformation below the 6 oppresses of centrum, because the incompressibility of hydraulic oil, elastic ring 12 can not by the shriveling, and elastic ring 12 produces the elastic deformation diameter grow to the outside and keeps off in the packing element 5 outside, and elastic ring 12 keeps off in the both sides of packing element 5, prevents to reciprocate after the packing element 5 outer fringe pressure-bearing, and according to sealed principle, the sealing performance when this measure can improve packing element 5 bears the high pressure by a wide margin to improve the bearing capacity of packing element 5 by a wide margin.
Claims (5)
1. The utility model provides an oil and natural gas bores and adopts soluble bridging plug, includes top connection (1), center tube (2), packing element (5), goes up cone (6), lower cone (10) and slips (8), clamp plate (7), return spring (9), its characterized in that: the upper connector (1) is in threaded connection with the central tube (2), the upper cone (6) is slidably mounted on the central tube (2), the lower cone (10) is fixedly mounted on the central tube (2) through the deblocking pin (11), the rubber tube (5) is sleeved on a sleeve on the upper portion of the upper cone (6), the upper cone (6) is further provided with a setting piston (4) and a piston sleeve (3), the piston sleeve (3) is hermetically connected to the outer side of the upper end of the upper cone (6) through threads, the upper end of the piston sleeve (3) is in sliding and sealing fit with the lower end of the upper connector (1), the lower end of the piston sleeve (3) is in sliding and sealing fit with the setting piston (4), and the setting piston (4) is in sliding and sealing fit with the upper cone (6);
a section of annulus exists between the piston sleeve (3) and the upper joint (1), an upper liquid passing hole (15) is formed in the annulus position of the piston sleeve (3) and the upper joint (1) of the central tube (2), an annulus exists between the top of the setting piston (4) and the piston sleeve (3), a middle liquid passing hole (14) is formed in the annulus position of the upper cone body (6), the lower part of the middle liquid passing hole (14) is formed in the lower part of the central tube (2), a lower liquid passing hole (13) is formed in the central tube (2), and the lower liquid passing hole (13) is formed between the middle liquid passing hole (14); sealing rings are arranged between the middle liquid passing hole (14) and the upper liquid passing hole (15) and between the upper cone body (6) and the central tube (2);
the upper joint (1) and the piston sleeve (3) are connected through a setting pin (16).
2. The soluble bridge plug for petroleum and natural gas drilling according to claim 1, wherein: a setting piston (4) and a rubber cylinder (5); elastic rings (12) are arranged between the upper vertebral body (6) and the rubber cylinder (5), and the elastic rings (12) are hollow rectangular rings made of elastic materials.
3. The soluble bridge plug for petroleum and natural gas drilling according to claim 2, wherein: the elastic ring (12) is filled with hydraulic oil.
4. The soluble bridge plug for petroleum and natural gas drilling according to claim 1, wherein: when the upper vertebral body (6) descends and the slip (8) is opened in place, the middle liquid passing hole (14) is communicated with the lower liquid passing hole (13).
5. The soluble bridge plug for petroleum and natural gas drilling according to claim 1, wherein: the sliding matching surface of the piston sleeve (3) and the upper joint (1) is processed with one-way teeth (17), and the sliding matching surface of the setting piston (4) and the upper vertebral body (6) is processed with one-way teeth (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052040.5A CN114458236A (en) | 2022-01-18 | 2022-01-18 | Soluble bridge plug for petroleum and natural gas drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052040.5A CN114458236A (en) | 2022-01-18 | 2022-01-18 | Soluble bridge plug for petroleum and natural gas drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114458236A true CN114458236A (en) | 2022-05-10 |
Family
ID=81408812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210052040.5A Pending CN114458236A (en) | 2022-01-18 | 2022-01-18 | Soluble bridge plug for petroleum and natural gas drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114458236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892378A (en) * | 2023-09-11 | 2023-10-17 | 大庆信辰油田技术服务有限公司 | Soluble bridge plug special for oil and gas well production increase |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101374A1 (en) * | 2014-12-26 | 2016-06-30 | 杰瑞能源服务有限公司 | Bridge plug having large drift diameter and setting method thereof |
| CN207813567U (en) * | 2017-12-21 | 2018-09-04 | 濮阳市东昊机械电子有限公司 | A kind of anti-hydrogen sulfide removable press-fracturing bridge plug |
| WO2018174902A1 (en) * | 2017-03-24 | 2018-09-27 | Vertechs Oil & Gas Technology Usa Company Llc | Dissolvable bridge plug |
| CN210134864U (en) * | 2019-06-27 | 2020-03-10 | 大庆泓洋机械设备有限公司 | Slip packer capable of setting step by step |
| CN113216899A (en) * | 2021-06-07 | 2021-08-06 | 大庆市晟威机械制造有限公司 | High-pressure-resistant soluble bridge plug |
| CN113338850A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Step-by-step setting soluble bridge plug |
-
2022
- 2022-01-18 CN CN202210052040.5A patent/CN114458236A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101374A1 (en) * | 2014-12-26 | 2016-06-30 | 杰瑞能源服务有限公司 | Bridge plug having large drift diameter and setting method thereof |
| WO2018174902A1 (en) * | 2017-03-24 | 2018-09-27 | Vertechs Oil & Gas Technology Usa Company Llc | Dissolvable bridge plug |
| CN207813567U (en) * | 2017-12-21 | 2018-09-04 | 濮阳市东昊机械电子有限公司 | A kind of anti-hydrogen sulfide removable press-fracturing bridge plug |
| CN210134864U (en) * | 2019-06-27 | 2020-03-10 | 大庆泓洋机械设备有限公司 | Slip packer capable of setting step by step |
| CN113216899A (en) * | 2021-06-07 | 2021-08-06 | 大庆市晟威机械制造有限公司 | High-pressure-resistant soluble bridge plug |
| CN113338850A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Step-by-step setting soluble bridge plug |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892378A (en) * | 2023-09-11 | 2023-10-17 | 大庆信辰油田技术服务有限公司 | Soluble bridge plug special for oil and gas well production increase |
| CN116892378B (en) * | 2023-09-11 | 2023-12-19 | 大庆信辰油田技术服务有限公司 | Soluble bridge plug special for oil and gas well production increase |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220510 |