CN110118076B - Centralizing type damping filling device - Google Patents
Centralizing type damping filling device Download PDFInfo
- Publication number
- CN110118076B CN110118076B CN201910549892.3A CN201910549892A CN110118076B CN 110118076 B CN110118076 B CN 110118076B CN 201910549892 A CN201910549892 A CN 201910549892A CN 110118076 B CN110118076 B CN 110118076B
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- sliding sleeve
- spring
- central tube
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- 238000013016 damping Methods 0.000 title claims abstract description 44
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 239000010985 leather Substances 0.000 claims description 15
- 238000004073 vulcanization Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 22
- 238000010276 construction Methods 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000012856 packing Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
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)
- Joints Allowing Movement (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a centralizing type damping filling device, which comprises a central tube (18); the upper end and the lower end of the central pipe (18) are respectively provided with an upper joint (1) and a lower joint (19); the excircle of the central tube (18) is provided with an upper righting ring (2), an upper positioning ring (5), an upper sliding sleeve (7), an upper spring (9), a lower sliding sleeve (11), a lower spring (13), a lower positioning ring (14) and a lower righting ring (16) from top to bottom in sequence at a position between the upper joint (1) and the lower joint (19). The centralizing type damping filling device disclosed by the invention is scientific and reasonable in structural design, can effectively change the flowing state of the sand-carrying liquid, prolong the flowing distance of the liquid and prolong the construction length of gravel filling, can be used for large-displacement wells and horizontal wells, and has important production practice significance.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, in particular to a centralizing type damping filling device.
Background
At present, for extended reach wells and horizontal wells in oil and gas field development, in the process of filling and completing the horizontal wells or high-gradient gravels, the horizontal sections are too long, the flowing distance of sand carrying liquid is limited, and long-distance filling operation cannot be carried out. In contrast, the existing effective method for realizing gravel packing construction of the long well section of the horizontal well comprises the following steps: the flow state of the sand carrying liquid is changed and the flow distance of the sand carrying liquid is prolonged through the damping filling device.
However, for the existing damping filling device, the straightening sheet is designed in an integrated manner, the structure is complex, eddy current is easy to generate, and the processing is difficult; meanwhile, the existing device lacks a positioning device, and the movement amount is too large and unstable in the construction process of the tool; the existing device adopts a design mode of a single leather cup and a single spring, so that the damping effect is poor, and the spring resetting capability is poor; the above conditions all affect the field application effect of the tool, and the effective filling of the long well section is difficult to realize.
For example, patent invention entitled "gravel pack string for horizontal well and pressure control valve thereof" issued on 6/15/2016, publication number: CN103362483B, mainly by top connection, parent tube, pretension nut, spring, leather cup, centralizer, lower clutch etc. constitute. The device mainly has the following defects: 1. the centralizing piece is designed in an integrated manner, the structure is complex, the flow passage is small, the vortex is easy to generate, and the processing is difficult; 2. the existing device lacks a positioning device, and has overlarge movement amount and instability in the construction process of a tool; 3. the existing device adopts a design mode of a single leather cup and a single spring, so that the damping effect is poor, and the spring resetting capability is poor; 4. the centralizer is single design, and the effect of rightting is poor.
Disclosure of Invention
The invention aims to provide a centralizing type damping filling device aiming at the technical defects in the prior art.
Therefore, the invention provides a centralizing type damping filling device which is characterized by comprising a central pipe;
the upper end and the lower end of the central pipe are respectively provided with an upper joint and a lower joint;
the excircle of the central tube is positioned between the upper joint and the lower joint and is sequentially provided with an upper righting ring, an upper positioning ring, an upper sliding sleeve, an upper spring, a lower sliding sleeve, a lower spring, a lower positioning ring and a lower righting ring from top to bottom;
wherein, the lower end surface of the upper sliding sleeve is tightly propped against the upper end surface of the upper spring;
the lower end surface of the upper spring is tightly propped against the upper end surface of the lower sliding sleeve;
the lower end surface of the lower sliding sleeve is tightly propped against the upper end surface of the lower spring;
the lower end surface of the lower spring is tightly propped against the upper end surface of the lower positioning ring.
The upper end of the upper joint is in threaded connection with an oil pipe in the extended reach well or the horizontal well;
the lower end of the upper joint is in threaded connection with the upper end of the excircle of the central tube;
the upper end of the lower joint is in threaded connection with the lower end of the excircle of the central tube.
Wherein, the upper righting ring is sleeved at the upper end of the central tube, and the upper righting ring and the central tube are in clearance fit;
the upper sliding sleeve is sleeved on the central pipe, and the upper sliding sleeve and the central pipe are in clearance fit;
the upper spring is sleeved on the central pipe, and the upper spring and the central pipe are in clearance fit;
the lower sliding sleeve is sleeved on the central pipe, and the lower sliding sleeve and the central pipe are in clearance fit;
the lower spring is sleeved on the central pipe, and the lower spring and the central pipe are in clearance fit.
The four upper centralizing pieces are respectively welded on the excircle of the upper centralizing ring and are distributed in a cross-shaped symmetrical manner;
the four lower centralizing pieces are respectively welded on the excircle of the lower centralizing ring and are distributed in a cross symmetry manner.
The upper positioning ring is sleeved at the upper end of the central pipe, and is fixed on the central pipe through an upper jackscrew;
the lower positioning ring is sleeved at the upper end of the central tube and is fixed on the central tube through the lower jackscrew.
Wherein, the outer circle of the upper sliding sleeve is in threaded connection with the inner circle of one upper base ring;
the excircle of the upper base ring is connected with an upper damping leather cup in a vulcanization way.
Wherein, the outer circle of the lower sliding sleeve is in threaded connection with the inner circle of the lower base ring;
the lower base ring is connected with the lower damping leather cup in a vulcanization mode.
Wherein, the upper righting ring is arranged between the lower end surface of the upper joint and the upper positioning ring;
the lower righting ring is arranged between the upper end surface of the lower joint and the lower positioning ring.
Compared with the prior art, the centralizing type damping filling device provided by the invention has the advantages of scientific and reasonable structural design, simple processing, good spring resetting effect, large flow-through, stable liquid flow and the like, can effectively change the flow state of the sand-carrying liquid, prolong the flow distance of the liquid and prolong the construction length of gravel filling, can be used for large-displacement wells and horizontal wells, and has important production practice significance.
Drawings
FIG. 1 is a sectional view of the overall structure of a centralizing type damping filling device provided by the invention;
fig. 2 is a cross-sectional view of an upper righting ring and an upper righting plate in the righting type damping filling device provided by the invention, namely a cross-sectional view along the line a-a shown in fig. 1;
in the figure: 1. the device comprises an upper connector, 2, an upper righting ring, 3, an upper righting sheet, 4, an upper jackscrew and 5, an upper positioning ring;
6. an upper damping leather cup, 7. an upper sliding sleeve, 8. an upper base ring, 9. an upper spring, 10. a lower damping leather cup;
11. the lower sliding sleeve, 12, a lower base ring, 13, a lower spring, 14, a lower positioning ring and 15, a lower jackscrew;
16. lower righting ring, 17, lower righting piece, 18, central tube, 19, lower joint.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.
Referring to fig. 1 and 2, the invention provides a centralizing type damping filling device, which is applied to extended reach wells and horizontal wells in oil and gas field development, and comprises a central tube 18;
the upper end and the lower end of the central tube 18 are respectively provided with an upper joint 1 and a lower joint 19;
the excircle of the central tube 18 is positioned between the upper joint 1 and the lower joint 19, and is sequentially provided with an upper righting ring 2, an upper positioning ring 5, an upper sliding sleeve 7, an upper spring 9, a lower sliding sleeve 11, a lower spring 13, a lower positioning ring 14 and a lower righting ring 16 from top to bottom;
wherein, the lower end surface of the upper sliding sleeve 7 is tightly propped against the upper end surface of the upper spring 9;
the lower end surface of the upper spring 9 is tightly propped against the upper end surface of the lower sliding sleeve 11;
the lower end surface of the lower sliding sleeve 11 is tightly propped against the upper end surface of the lower spring 13;
the lower end surface of the lower spring 13 is tightly pressed against the upper end surface of the lower positioning ring 14.
In the invention, in a concrete implementation, the left end of the upper joint 1 is used for being connected with an oil pipe (specifically, in a threaded connection) in a large displacement well or a horizontal well. The method specifically comprises the following steps: an internal thread is processed on the inner side of the left end of the upper joint 1, and an external thread is processed on the outer circle of an oil pipe in the extended reach well or the horizontal well, so that the upper end of the upper joint 1 is in threaded connection with the oil pipe in the extended reach well or the horizontal well.
It should be noted that for a large displacement well or horizontal well, the gravel pack cementing string is provided with an oil pipe, and the oil pipe is a pipeline for transporting crude oil and natural gas from a hydrocarbon reservoir to the surface after drilling is completed.
In the invention, in concrete implementation, an inner thread is processed on the inner side of the lower end of the upper joint 1, and an outer thread is arranged at the upper end of the outer circle of the central pipe 18, so that the lower end of the upper joint 1 is in threaded connection with the upper end of the outer circle of the central pipe 18.
In the present invention, in a specific implementation, the upper centering ring 2 is sleeved on the upper end of the central tube 18, and the two are in clearance fit.
In the invention, in concrete implementation, the four upper centering pieces 3 are respectively welded on the excircle (namely the peripheral outer wall) of the upper centering ring 2 and are distributed in a cross-shaped symmetrical manner.
In the invention, in the concrete implementation, the upper positioning ring 5 is sleeved on the upper end of the central tube 18, and the upper positioning ring 5 is fixed on the central tube 18 through the upper jackscrew 4.
It should be noted that, with the present invention, the upper centering ring 2 is installed between the lower end surface of the upper joint 1 and the upper positioning ring 5. Since the upper centralizing ring 2 is sleeved on the upper end of the central tube 18, the two are in clearance fit, so that the upper centralizing ring 2 can freely slide between the lower end surface of the upper joint 1 and the upper positioning ring 5.
In the invention, the upper sliding sleeve 7 is sleeved on the central tube 18, and the upper sliding sleeve and the central tube are in clearance fit and can freely slide.
In the invention, in the concrete implementation, the outer circle of the upper sliding sleeve 7 is in threaded connection with the inner circle of one upper base ring 8;
the excircle of the upper base ring 8 is connected with an upper damping leather cup 6 in a vulcanization way.
In the present invention, the upper spring 9 is sleeved on the central tube 18, and the two are in clearance fit and can freely slide.
In the present invention, the lower sliding sleeve 11 is sleeved on the central tube 18, and the two are in clearance fit and can freely slide.
In the invention, the outer circle of the upper and lower sliding sleeves 11 is in threaded connection with the inner circle of the lower base ring 12;
the lower base ring 12 is connected with the lower damping leather cup 10 in a vulcanization mode.
In the invention, the lower spring 13 is sleeved on the central tube 18, and the lower spring and the central tube are in clearance fit and can freely slide.
In the present invention, the upper positioning ring 14 is sleeved on the upper end of the central tube 18, and the lower positioning ring 14 is fixed on the central tube 18 through the lower jackscrew 15.
In the present invention, in a specific implementation, the lower centralizing ring 16 is sleeved on the upper end of the central tube 18, and the two are in clearance fit.
In the present invention, in a specific implementation, four lower centering pieces 17 are respectively welded to the outer circle (i.e., the peripheral outer wall) of the lower centering ring 16, and are distributed in a cross-shaped symmetrical manner. The specific structural distribution can be seen from fig. 2, which is consistent with the distribution of the upper righting plates 3 and the upper righting rings 2 in fig. 2.
In the present invention, in particular, lower centralizing ring 16 is mounted between the upper end surface of lower joint 19 and lower positioning ring 14. Because the lower centralizing ring 16 is sleeved on the upper end of the central tube 18, the two are in clearance fit. Thus, lower stabilizing ring 16 can slide freely between the upper end face of lower joint 19 and lower positioning ring 14.
In the present invention, in the specific implementation, an inner thread is processed on the inner side of the upper end of the lower joint 19, and an outer thread is provided on the lower end of the outer circle of the central tube 18, so that the upper end of the lower joint 19 is in threaded connection with the lower end of the outer circle of the central tube 18.
For the invention, during the construction operation (namely, carrying out horizontal well or high-gradient gravel packing well completion), the device of the invention is placed in the horizontal well section part of the horizontal well, or is placed in the high-gradient gravel packing well completion (namely, a large-displacement well), at this time, the central pipe 18 is placed transversely, after the filling operation of the sand-carrying fluid is started, the sand-carrying fluid is filled and flows from the direction of the upper joint 1, firstly flows through the gap between the upper centralizing ring 2 and the upper centralizing piece 3, then part of the liquid flows around from the outer edge of the upper damping leather cup 6, part of the liquid directly impacts on the upper damping leather cup 6, so that the liquid integrally pushes the upper damping leather cup 6, the upper base ring 8 and the upper sliding sleeve 7 to move downwards (in the right direction when the central pipe is placed horizontally), the upper spring 9 is compressed, the upper spring 9 transmits the force to the lower sliding sleeve 11, and the lower sliding sleeve 11 transmits the force downwards, in combination with the compression lower spring 13; meanwhile, the liquid flowing around the outer edge of the upper damping cup 6 continuously flows rightwards, directly impacts the lower damping cup 10 on the one hand, and pushes the lower damping cup 10 and the lower sliding sleeve 11 to compress the lower spring 13. Through the steps, the flow state of the fluid outside the centralizing type damping and filling device (shown in figure 1) provided by the invention is changed, so that more sand-carrying liquid flows along the outside of the centralizing type damping and filling device, more sand-carrying liquid is driven to flow rightwards (specifically to the axial direction of the central pipe), the liquid flowing distance is further prolonged, the length of gravel filling construction is prolonged, and long well section gravel filling operation is realized.
It should be noted that, at present, in the process of a horizontal well long well section gravel packing process, the flowing distance of liquid needs to be extended to further extend the packing distance, and in view of the fact that the existing damping packing device is generally a pressure control valve, the tool has the problems of complex structure, easy generation of vortex, instability, poor damping effect, poor spring resetting capability and the like, the invention provides a novel centralizing type damping packing device. The device has the advantages of simple processing, low cost, good spring resetting effect, large through flow, stable liquid flow and good overall performance and stability of the tool. The invention can be used for extended reach wells and horizontal wells.
Compared with the prior art, the invention has the following beneficial technical effects:
1. for the centralizing type damping filling device provided by the invention, a design mode of double centralizers is adopted, so that the centralizing effect of a tool is fully ensured, and liquid is in a stable flowing state;
2. meanwhile, the design mode of four straight-plate type centralizing pieces is adopted, so that the flow area of the liquid is greatly increased, and the generation of eddy current is avoided;
3. in addition, in the invention, the righting sheet is connected with the righting ring in a welding mode, so that the difficulty of an integrated processing scheme is avoided, and the cost is reduced;
4. the invention adopts the combination of two groups of springs, the adjusting range is larger, and the spring resetting performance is better;
5. the invention adopts the design mode of two groups of damping leather cups, thereby ensuring the damping effect of the fluid;
6. the invention designs the upper positioning device and the lower positioning device, limits the movement of each part within a certain range, and enhances the integral stability of the tool.
7. In the whole construction process, no part falls off or goes out of the tool, so that other tools are not affected, and the safety and reliability of construction are fully ensured.
Compared with the prior art, the centralizing type damping filling device provided by the invention has the advantages of scientific and reasonable structural design, simple processing, good spring resetting effect, large flow-through, stable liquid flow and the like, can effectively change the flow state of the sand-carrying liquid, prolong the flow distance of the liquid and prolong the gravel filling construction length, can be used for a large-displacement well and a horizontal well, and has great production practice significance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A centralizing type damping filling device is characterized by comprising a central tube (18);
the upper end and the lower end of the central pipe (18) are respectively provided with an upper joint (1) and a lower joint (19);
the excircle of the central tube (18) is positioned between the upper joint (1) and the lower joint (19), and an upper righting ring (2), an upper positioning ring (5), an upper sliding sleeve (7), an upper spring (9), a lower sliding sleeve (11), a lower spring (13), a lower positioning ring (14) and a lower righting ring (16) are sequentially arranged from top to bottom;
wherein, the lower end surface of the upper sliding sleeve (7) is tightly propped against the upper end surface of the upper spring (9);
the lower end surface of the upper spring (9) is tightly propped against the upper end surface of the lower sliding sleeve (11);
the lower end surface of the lower sliding sleeve (11) is tightly propped against the upper end surface of the lower spring (13);
the lower end surface of the lower spring (13) is tightly propped against the upper end surface of the lower positioning ring (14);
wherein, the upper righting ring (2) is sleeved at the upper end of the central tube (18), and the upper righting ring and the central tube are in clearance fit;
the four upper centralizing pieces (3) are respectively welded on the excircle of the upper centralizing ring (2) and are distributed in a cross-shaped symmetrical manner;
the four lower centralizing pieces (17) are respectively welded on the excircle of the lower centralizing ring (16) and are distributed in a cross-shaped symmetrical manner;
wherein, the upper positioning ring (5) is sleeved at the upper end of the central tube (18), and the upper positioning ring (5) is fixed on the central tube (18) through the upper jackscrew (4);
the lower positioning ring (14) is sleeved at the upper end of the central pipe (18), and the lower positioning ring (14) is fixed on the central pipe (18) through a lower jackscrew (15);
wherein, the upper positioning ring (5) and the lower positioning ring (14) can move up and down firstly, and then the fixed positions are adjusted by the upper jackscrew (4) and the lower jackscrew (15) respectively.
2. The centralizing damping filling device according to claim 1, wherein the upper end of the upper joint (1) is in threaded connection with the oil pipe in a large displacement well or a horizontal well;
the lower end of the upper joint (1) is in threaded connection with the upper end of the excircle of the central tube (18);
the upper end of the lower joint (19) is in threaded connection with the lower end of the outer circle of the central tube (18).
3. Centralizing damping filling device according to claim 1, characterised in that the upper sliding sleeve (7) is fitted over the central tube (18) with a clearance fit;
the upper spring (9) is sleeved on the central pipe (18), and the upper spring and the central pipe are in clearance fit;
the lower sliding sleeve (11) is sleeved on the central pipe (18), and the lower sliding sleeve and the central pipe are in clearance fit;
the lower spring (13) is sleeved on the central tube (18), and the lower spring and the central tube are in clearance fit.
4. The centralizing damping filling device according to claim 1, characterized in that the outer circle of the upper sliding sleeve (7) is in threaded connection with the inner circle of an upper base ring (8);
the excircle of the upper base ring (8) is connected with an upper damping leather cup (6) in a vulcanization way.
5. The centralizing damping filling device according to claim 1, wherein the outer circle of the lower sliding sleeve (11) is in threaded connection with the inner circle of the lower base ring (12);
the lower base ring (12) is connected with the lower damping leather cup (10) in a vulcanization mode.
6. Centralizing type damping filling device according to any one of claims 1 to 5, characterized in that an upper centralizing ring (2) is mounted between the lower end face of the upper joint (1) and the upper positioning ring (5);
the lower righting ring (16) is arranged between the upper end surface of the lower joint (19) and the lower positioning ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549892.3A CN110118076B (en) | 2019-06-24 | 2019-06-24 | Centralizing type damping filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549892.3A CN110118076B (en) | 2019-06-24 | 2019-06-24 | Centralizing type damping filling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110118076A CN110118076A (en) | 2019-08-13 |
| CN110118076B true CN110118076B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910549892.3A Active CN110118076B (en) | 2019-06-24 | 2019-06-24 | Centralizing type damping filling device |
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| Country | Link |
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| CN (1) | CN110118076B (en) |
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| US5829525A (en) * | 1996-05-02 | 1998-11-03 | Bestline Liner Systems, Inc. | Bypass tool |
| RU2277628C2 (en) * | 2001-12-24 | 2006-06-10 | Владимир Иванович Иванников | Well filter cleaning device (variants) |
| CN201486538U (en) * | 2009-08-14 | 2010-05-26 | 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 | Sand prevention pipe string used for open-hole well completion of side-drilled multilateral well and plug-in type acid cleaning filling inner pipe string thereof |
| CN202755955U (en) * | 2012-03-31 | 2013-02-27 | 大港油田集团有限责任公司 | Gravel packing string for horizontal wells |
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2019
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| CN110118076A (en) | 2019-08-13 |
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