CN113187432A - Composite cement holds and stays ware - Google Patents
Composite cement holds and stays ware Download PDFInfo
- Publication number
- CN113187432A CN113187432A CN202110468096.4A CN202110468096A CN113187432A CN 113187432 A CN113187432 A CN 113187432A CN 202110468096 A CN202110468096 A CN 202110468096A CN 113187432 A CN113187432 A CN 113187432A
- Authority
- CN
- China
- Prior art keywords
- slip
- ring
- mandrel
- composite cement
- cone
- 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
- 239000004568 cement Substances 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 13
- 239000002905 metal composite material Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 abstract description 10
- 238000010008 shearing Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Details Of Valves (AREA)
Abstract
The invention relates to a composite cement retainer, comprising: a mandrel; one end of the mandrel is wrapped in the releasing joint, and the other end of the mandrel is wrapped in the guide shoe; the outer ring of the mandrel is sequentially provided with a slip seat, an upper slip, an upper cone, a rubber cylinder, a lower cone and a lower slip from one end close to the releasing joint to one end close to the guide shoe; a bush is arranged in the mandrel, and a slide valve is arranged in the bush; the top and the bottom department of packing element all are equipped with packing element support ring, play the supporting role to the packing element, have improved the pressure-resistant ability of packing element.
Description
Technical Field
The invention relates to a composite cement retainer.
Background
The cement retaining device is a common tool for sealing the upper layer, squeezing cement to plug the lower layer or squeezing cement to perform secondary well cementation. The problem of poor pressure resistance is easily appeared in the use to the packing element of current cement holds and stays the ware, influences the overall use that the cement held and stays the ware, influences the packing effect.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides a composite cement retainer.
The technical scheme adopted by the invention for solving the technical problem is a composite cement retainer, which comprises: a mandrel; one end of the mandrel is wrapped in the releasing joint, and the other end of the mandrel is wrapped in the guide shoe;
the outer ring of the mandrel is sequentially provided with a slip seat, an upper slip, an upper cone, a rubber cylinder, a lower cone and a lower slip from one end close to the releasing joint to one end close to the guide shoe;
a bushing is arranged in the mandrel, a slide valve is arranged in the bushing, and the slide valve is positioned at the lower part of an inner hole of the mandrel bushing;
and the top end and the bottom end of the rubber cylinder are both provided with rubber cylinder supporting rings.
In one embodiment of the invention, outer slopes are arranged on outer rings of the top end and the bottom end of the rubber cylinder, and inner slopes matched with the outer slopes are arranged on inner rings of the supporting rings of the rubber cylinder.
In an embodiment of the invention, the upper cone and the lower cone are both provided with a setting shear pin, and the upper slip and the lower slip are both sleeved with a slip ring.
In one embodiment of the invention, a shearing ring is arranged on the releasing joint at one end close to the slip seat, and a releasing shear pin is sleeved in the shearing ring.
In one embodiment of the invention, a sealing plug is arranged at one end of the bushing close to the guide shoe, and an O-shaped sealing ring is arranged between the sealing plug and the bushing.
In one embodiment of the invention, an O-ring seal is disposed between the bushing and the mandrel.
In one embodiment of the invention, an O-shaped support ring and an O-shaped sealing ring are arranged between the slide valve and the bushing.
In one embodiment of the invention, slip grooves matched with the upper slips and the lower slips are respectively arranged in the upper cone and the lower cone, and dovetail grooves are arranged on two sides of each slip groove.
In one embodiment of the invention, the upper slip, the lower slip, the lining, the shearing ring and the slide valve are all made of metal materials which are easy to drill and remove; the releasing joint, the releasing shear pin, the slip seat, the upper cone, the lower cone, the setting shear pin and the guide shoe are all made of non-metal composite materials; because most of materials are made of non-metal composite materials, when the cement slip bearing device is drilled, the drilling time is short, the speed is high, the operation time efficiency is improved, the operation cost is reduced, and the operation safety is improved.
The invention has the beneficial effects that: in this application, set up packing element support ring respectively at the top and the bottom of packing element, play the supporting role to the packing element, improved the pressure-resistant ability of packing element.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is an enlarged view of the structure at B in FIG. 1;
fig. 4 is a schematic perspective view of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
As shown in fig. 1 to 4, a composite cement retention device includes: a mandrel 1; one end of the mandrel 1 is wrapped in the releasing joint 2, and the other end of the mandrel is wrapped in the guide shoe 3;
the outer ring of the mandrel 1 is sequentially provided with a slip seat 4, an upper slip 5, an upper cone 6, a rubber cylinder 7, a lower cone 8 and a lower slip 9 from one end close to the releasing joint 2 to one end close to the guide shoe 3; the upper cone 6 and the lower cone 8 are both provided with a setting shear pin 13, and the upper slip 5 and the lower slip 9 are both sleeved with a slip ring 14; a shearing ring 15 is arranged at one end of the releasing joint 1 close to the slip seat 5, and a releasing shear pin 16 is sleeved in the shearing ring 15; one end of the bush 10 close to the guide shoe 3 is provided with a sealing plug 19, and an O-shaped sealing ring 18 is arranged between the sealing plug 19 and the bush 10;
a bushing 10 is arranged in the core shaft 1, and an O-shaped sealing ring 18 is arranged between the bushing 10 and the core shaft 1; a slide valve 11 is arranged in the bushing 10, and the slide valve 11 is arranged at the lower part of an inner hole of the bushing; an O-shaped supporting ring 17 and an O-shaped sealing ring 18 are arranged between the slide valve 11 and the bushing 10;
the top end and the bottom end of the rubber cylinder 7 are both provided with rubber cylinder supporting rings 12; specifically, outer slope surfaces are arranged on the outer rings of the top end and the bottom end of the rubber cylinder 7, inner slope surfaces matched with the outer slope surfaces are arranged on the inner ring of the rubber cylinder supporting ring 12, and the inner slope surfaces and the outer slope surfaces are arranged, so that the rubber cylinder and the rubber cylinder supporting ring can be in closer contact with each other in a matched manner; and the inclined plane contact is favorable for the transmission of axial force, and is convenient for the extrusion of the rubber cylinder.
When the cement retainer is used, the cement retainer is connected to the lower end of a setting tool, the cement retainer is sent into a shaft by a drill string or a tubing string, and a sliding valve is in an open state and the drilling resistance is small in the drilling process. After the designed depth is given, the setting tool is operated to set the cement retainer, the upper slips are firstly propped open to be clamped on the wall of the casing, then the pipe column is lifted until the releasing shear pin is cut off, and the releasing joint is pulled out along with the pipe column. In the process of lifting the pipe column, the rubber sleeve compresses the sealed annular space, the lower slip is propped open and clamped on the wall of the casing, and then the lower slip is pressed down by 200kN, so that the upper slip and the lower slip are better clamped on the wall of the casing. And lifting the setting tool, closing the sliding valve, and completing setting and releasing of the cement retainer. When cement is squeezed, the pipe column is put down, the insertion pipe (mechanical setting tool) opens the sliding valve, and then the cement squeezing operation can be carried out. If a cable setting tool or a hydraulic setting tool is used for setting the cement retainer, the setting tool needs to be lifted out, then the setting tool is put into an ash squeezing pipe column, and the sliding valve is opened to squeeze ash.
When the rubber barrel supporting ring is used, the rubber barrel supporting ring 12 is arranged to play a certain supporting role on the rubber barrel, the pressure resistance of the rubber barrel is improved, and as most of materials are made of non-metal composite materials, when the cement slip bearing device is drilled, the drilling time is short, the speed is high, the operation time is improved, the operation cost is reduced, and the operation safety is improved.
The upper slip 5, the lower slip 9, the lining 10, the shearing ring 15 and the slide valve 11 are all made of metal materials easy to drill and remove, so that the drilling and the removal are facilitated; releasing joint 2, releasing shear pin 16, slip seat 4, upward cone 6, lower cone 8, setting shear pin 13 and guide shoe 3 all adopt non-metallic composite to make for it bores except that the ware is bored very easily to hold, labour saving and time saving, and is efficient, makes to bore except that the operation can go on smoothly, reduces the working cost low.
The invention can be used as a cement retainer and a conventional bridge plug, and can completely replace the existing bridge plug.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (9)
1. A composite cement retention device, comprising: a mandrel; one end of the mandrel is wrapped in the releasing joint, and the other end of the mandrel is wrapped in the guide shoe;
the outer ring of the mandrel is sequentially provided with a slip seat, an upper slip, an upper cone, a rubber cylinder, a lower cone and a lower slip from one end close to the releasing joint to one end close to the guide shoe;
a bush is arranged in the mandrel, a slide valve is arranged in the bush, and the slide valve is arranged at the lower part of an inner hole of the mandrel bush;
and the top end and the bottom end of the rubber cylinder are both provided with rubber cylinder supporting rings.
2. The composite cement retainer according to claim 1, wherein the outer rings of the top end and the bottom end of the rubber cylinder are provided with outer slope surfaces, and the inner ring of the supporting ring of the rubber cylinder is provided with inner slope surfaces matched with the outer slope surfaces.
3. The composite cement retention device according to claim 1, wherein the upper cone and the lower cone are both provided with a setting shear pin, and the upper slip and the lower slip are both sleeved with a slip ring.
4. The composite cement retainer according to claim 3, wherein a shear ring is provided on the releasing sub at the end close to the slip seat, and a releasing shear pin is sleeved in the shear ring.
5. The composite cement retainer according to claim 1, wherein a sealing plug is provided at an end of the bushing near the guide shoe, and an O-ring is provided between the sealing plug and the bushing.
6. The composite cement retainer according to claim 5, wherein an O-ring is disposed between the bushing and the mandrel.
7. The composite cement retainer according to claim 5 or 6, wherein an O-shaped support ring and an O-shaped sealing ring are arranged between the slide valve and the bushing.
8. The composite cement retainer according to claim 1, wherein slip grooves matched with the upper slip and the lower slip are respectively arranged in the upper cone and the lower cone, dovetail grooves are arranged on two sides of each slip groove, and bosses on two sides of the upper slip and the lower slip are inserted into the dovetail grooves in a matched manner.
9. The composite cement retainer according to claim 1 or 4, wherein the upper slip, the lower slip, the bushing, the shear ring and the slide valve are made of metal materials easy to drill and remove; the releasing joint, the releasing shear pin, the slip seat, the upper cone, the lower cone, the setting shear pin and the guide shoe are all made of non-metal composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468096.4A CN113187432A (en) | 2021-04-28 | 2021-04-28 | Composite cement holds and stays ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468096.4A CN113187432A (en) | 2021-04-28 | 2021-04-28 | Composite cement holds and stays ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113187432A true CN113187432A (en) | 2021-07-30 |
Family
ID=76980043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110468096.4A Pending CN113187432A (en) | 2021-04-28 | 2021-04-28 | Composite cement holds and stays ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113187432A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11555375B2 (en) * | 2019-10-07 | 2023-01-17 | Brad SCOGGINS | Composite cement retainer |
-
2021
- 2021-04-28 CN CN202110468096.4A patent/CN113187432A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11555375B2 (en) * | 2019-10-07 | 2023-01-17 | Brad SCOGGINS | Composite cement retainer |
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