CA2908981C - A rotatable liner hanger with embedded slip of multiple cones - Google Patents
A rotatable liner hanger with embedded slip of multiple cones Download PDFInfo
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- CA2908981C CA2908981C CA2908981A CA2908981A CA2908981C CA 2908981 C CA2908981 C CA 2908981C CA 2908981 A CA2908981 A CA 2908981A CA 2908981 A CA2908981 A CA 2908981A CA 2908981 C CA2908981 C CA 2908981C
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- cone
- slip
- ring
- slips
- liner hanger
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- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000013461 design Methods 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 241000282472 Canis lupus familiaris Species 0.000 claims description 12
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000007790 scraping Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 10
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- 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
- E21B43/10—Setting of casings, screens, liners or the like in wells
-
- 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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
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- 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)
- Earth Drilling (AREA)
Abstract
The present invention discloses a rotatable liner hanger with embedded slip of multiple cones, wherein: the Cone is separated with Body in order to rotate after setting; the heavy-duty Bearing is designed by slide lubricant, which makes sure that can rotate under overload situation; sealing design of the heavy-duty bearing ensure sealing when rotate; the OD of embedded slip is smaller than that of cone and the slips hide in cone before setting, which can protect slips from collisions in the process of running in the wellbore; every slip's back side contains two inclined surfaces, which makes sure the effect of setting; the slips and cone is connected with inverted cone track, which can protect the slip from scraping; there are six slips that can share the load and reduce damage of the upper casings furthest. Using this device can increase slurry turbulent to improve the cementing quality.
Description
A Rotatable Liner Hanger with Embedded Slip of Multiple Cones Technical Field The invention refers to oil cementing tool's field, especially refers to A
Rotatable Liner Hanger with Embedded Slip of Multiple Cones.
Background technology At present, in domestic, the regular liner hanger technology is already mature relatively.
But, as the technology updates and special oil and gas reservoirs development needs, such as gas storage, the requirements of liner's and the top packer's technology are higher and higher.
A few domestic companies and oilfield begin to study rotating technology, but little in the practical applications. Design ideas of the rotating liner is making liner tools rotate when the liners are run into the well or cementing is operated, and the liner tools can absorb a certain amount of torque, which can make sure that cement tools run into the well smoothly and improve the cementing quality. At the same time, there are much higher requirements for liner related tools, such as the liner hanger and the top packer. Two big problems exist in the application of the rotating liner hanger: one is that the bearing capacity is insufficient and stability is poor in deep well or ultra-deep well cementing performance;
another is that the load way of conical surfaces of slip's inner and the cone's outer increases stress value of slip, cone and outer casing, which restricts the hanger's reliability in complex wells, such as horizontal well, extended reach well, etc.
So a new rotatable liner hanger needs to be invented.
Summary of Invention The purpose of this invention is to design A Rotatable Liner Hanger with Embedded Slip of Multiple Cones for solving the problem of present technology and achieving the ability of setting and rotating, meanwhile it has great capacity of hanging load, protecting the slip and the upper casing, preventing slip setting in advance, and other functions. So the hanger's reliability in complex wells, e.g. horizontal well and extended reach well, can be improved.
This invention's purpose and solution for technology problem are achieved by following technology proposal.
A rotatable liner hanger with embedded slip of multiple cones includes: the liner hanger contains Body (1), Lock Ring (2), Adjusting Gauge Ring (3), Bearing End Face Ring (4), Bearing Protection Ring (5), Adjusting Ring (6), Cone(7), Slip (8), C-ring (9), Connector Ring (10), Dog (11), Cylinder Top Ring (12), Cylinder (13), Key Screws (16), Shear Screws (17), and Gauge Ring (18).
There are six pieces of Slips (8) in Cone (7), and each slip's back side contains two Inclined Surfaces (19), and the slips distributed in circumferential direction uniformly. Each column contains two Conical Grooves that have rectangular hole throughout the Cone (7).
The two Sides (19) of Conical Grooves are inclined surfaces. The end face of Cone(7) have six uniform distribution Trapezoid Grooves (24). The OD of embedded Slip (8) is smaller than that of Cone (7) and the slips hide in cone before setting. The two inclined surfaces (20) of Slip (8) are clearance fit with the two Sides (19) of cone (7). The cone (7) and slips (8) is connected with inverted cone track on the inclined surfaces (19) (20) of the cone and slips.
After setting, the channel between Slip (8) and Cone (7) and the Trapezoid Grooves (24) are ways for flowing of cementing slurry.
Slip (8) connects directly with Connector Ring (10).
Cone (7) and Body (1) are clearance fit, and Cone (7) can rotate around the Body (1).
Slide bearing contains two Bearing End Face Rings (4), one Bearing Protection Ring (5) and four seal rings (23).
The top of Body (1) connects the top packer and running tool, and the bottom connects the liner.
The rotatable liner hanger with embedded slip of multiple cones, wherein: the two Inclined Surfaces (20) of Slip (8) are clearance fit with the two Inclined Surfaces (19) of cone (7), and the inverted cone track (22) of the slips (8) are clearance fit with the inverted cone track (21) of the cone (7).
The rotatable liner hanger with embedded slip of multiple cones, wherein:
included angle between the Inclined Surfaces (20) and axis of Slip (8) and the angle between the inverted cone track (22) of the slips (8) and axis of Slip (8), another between the two Sides (19) of Conical Grooves and axis of Cone (7) and the angle between the inverted cone track (21) of the cone (7) and axis of cone (7) are same size and have a same slide angle with that between Slip (8) and Cone (7); and the Slip (8), Cone (7) and Body (1) are same axial.
The rotatable liner hanger with embedded slip of multiple cones, wherein: the heavy-duty Bearing is designed by slide lubricant and contains two Bearing End Face Rings (4) and one Bearing Protection Ring (5) and four seal rings (23), which makes sure that can
Rotatable Liner Hanger with Embedded Slip of Multiple Cones.
Background technology At present, in domestic, the regular liner hanger technology is already mature relatively.
But, as the technology updates and special oil and gas reservoirs development needs, such as gas storage, the requirements of liner's and the top packer's technology are higher and higher.
A few domestic companies and oilfield begin to study rotating technology, but little in the practical applications. Design ideas of the rotating liner is making liner tools rotate when the liners are run into the well or cementing is operated, and the liner tools can absorb a certain amount of torque, which can make sure that cement tools run into the well smoothly and improve the cementing quality. At the same time, there are much higher requirements for liner related tools, such as the liner hanger and the top packer. Two big problems exist in the application of the rotating liner hanger: one is that the bearing capacity is insufficient and stability is poor in deep well or ultra-deep well cementing performance;
another is that the load way of conical surfaces of slip's inner and the cone's outer increases stress value of slip, cone and outer casing, which restricts the hanger's reliability in complex wells, such as horizontal well, extended reach well, etc.
So a new rotatable liner hanger needs to be invented.
Summary of Invention The purpose of this invention is to design A Rotatable Liner Hanger with Embedded Slip of Multiple Cones for solving the problem of present technology and achieving the ability of setting and rotating, meanwhile it has great capacity of hanging load, protecting the slip and the upper casing, preventing slip setting in advance, and other functions. So the hanger's reliability in complex wells, e.g. horizontal well and extended reach well, can be improved.
This invention's purpose and solution for technology problem are achieved by following technology proposal.
A rotatable liner hanger with embedded slip of multiple cones includes: the liner hanger contains Body (1), Lock Ring (2), Adjusting Gauge Ring (3), Bearing End Face Ring (4), Bearing Protection Ring (5), Adjusting Ring (6), Cone(7), Slip (8), C-ring (9), Connector Ring (10), Dog (11), Cylinder Top Ring (12), Cylinder (13), Key Screws (16), Shear Screws (17), and Gauge Ring (18).
There are six pieces of Slips (8) in Cone (7), and each slip's back side contains two Inclined Surfaces (19), and the slips distributed in circumferential direction uniformly. Each column contains two Conical Grooves that have rectangular hole throughout the Cone (7).
The two Sides (19) of Conical Grooves are inclined surfaces. The end face of Cone(7) have six uniform distribution Trapezoid Grooves (24). The OD of embedded Slip (8) is smaller than that of Cone (7) and the slips hide in cone before setting. The two inclined surfaces (20) of Slip (8) are clearance fit with the two Sides (19) of cone (7). The cone (7) and slips (8) is connected with inverted cone track on the inclined surfaces (19) (20) of the cone and slips.
After setting, the channel between Slip (8) and Cone (7) and the Trapezoid Grooves (24) are ways for flowing of cementing slurry.
Slip (8) connects directly with Connector Ring (10).
Cone (7) and Body (1) are clearance fit, and Cone (7) can rotate around the Body (1).
Slide bearing contains two Bearing End Face Rings (4), one Bearing Protection Ring (5) and four seal rings (23).
The top of Body (1) connects the top packer and running tool, and the bottom connects the liner.
The rotatable liner hanger with embedded slip of multiple cones, wherein: the two Inclined Surfaces (20) of Slip (8) are clearance fit with the two Inclined Surfaces (19) of cone (7), and the inverted cone track (22) of the slips (8) are clearance fit with the inverted cone track (21) of the cone (7).
The rotatable liner hanger with embedded slip of multiple cones, wherein:
included angle between the Inclined Surfaces (20) and axis of Slip (8) and the angle between the inverted cone track (22) of the slips (8) and axis of Slip (8), another between the two Sides (19) of Conical Grooves and axis of Cone (7) and the angle between the inverted cone track (21) of the cone (7) and axis of cone (7) are same size and have a same slide angle with that between Slip (8) and Cone (7); and the Slip (8), Cone (7) and Body (1) are same axial.
The rotatable liner hanger with embedded slip of multiple cones, wherein: the heavy-duty Bearing is designed by slide lubricant and contains two Bearing End Face Rings (4) and one Bearing Protection Ring (5) and four seal rings (23), which makes sure that can
2 rotate under overload.
The rotatable liner hanger with embedded slip of multiple cones, wherein: the two seal ring between Bearing End Face Ring (4) and Bearing Protection Ring (5) and the tow seal ring between Bearing End Face Ring (4) and the body (1) compose the sealing system of the heavy-duty Bearing, and the sealing design of the heavy-duty bearing ensured the sealing when rotate;
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there are six slips installed on Cone (7) that can share the load on every piece of slip and reduce damage for the upper casings furthest.
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there is a C-ring (9) between Cone (7) and Body (1), and the Cone (7) and Body (1) can rotate relatively.
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there are some Dogs (11) between Connector Ring (10) and Cylinder Top Ring (12); when Cylinder (13) drives the Cylinder Top Ring (12), Dogs (11) will contract to inner of the Cylinder Top Ring (12); and Connector Ring (10) and Body (1) can rotate relatively.
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there are two Key Screws (16) and some Shear Screws (17) which can fix the Cylinder (13) on the Gauge Ring (18).
The rotatable liner hanger with embedded slip of multiple cones, wherein: the Gauge Ring (18) is fixed on body (1) by Lock Ring (25), and the OD of the Gauge Ring (18) is maximum one of the liner hanger.
Comparing with present technology, this invention of a rotatable liner hanger with embedded slip of multiple cones has the following advantages at least:
(1) The Cone is separated with Body in order to rotate after setting.
(2) The heavy-duty Bearing is designed by slide lubricant, which makes sure that can rotate under overload.
The rotatable liner hanger with embedded slip of multiple cones, wherein: the two seal ring between Bearing End Face Ring (4) and Bearing Protection Ring (5) and the tow seal ring between Bearing End Face Ring (4) and the body (1) compose the sealing system of the heavy-duty Bearing, and the sealing design of the heavy-duty bearing ensured the sealing when rotate;
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there are six slips installed on Cone (7) that can share the load on every piece of slip and reduce damage for the upper casings furthest.
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there is a C-ring (9) between Cone (7) and Body (1), and the Cone (7) and Body (1) can rotate relatively.
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there are some Dogs (11) between Connector Ring (10) and Cylinder Top Ring (12); when Cylinder (13) drives the Cylinder Top Ring (12), Dogs (11) will contract to inner of the Cylinder Top Ring (12); and Connector Ring (10) and Body (1) can rotate relatively.
The rotatable liner hanger with embedded slip of multiple cones, wherein:
there are two Key Screws (16) and some Shear Screws (17) which can fix the Cylinder (13) on the Gauge Ring (18).
The rotatable liner hanger with embedded slip of multiple cones, wherein: the Gauge Ring (18) is fixed on body (1) by Lock Ring (25), and the OD of the Gauge Ring (18) is maximum one of the liner hanger.
Comparing with present technology, this invention of a rotatable liner hanger with embedded slip of multiple cones has the following advantages at least:
(1) The Cone is separated with Body in order to rotate after setting.
(2) The heavy-duty Bearing is designed by slide lubricant, which makes sure that can rotate under overload.
(3) The sealing design of the heavy-duty bearing ensures the sealing when rotate.
(4) The embedded slips and cone is connected with inverted cone track on the inclined surface, which can protect the slip from scraping;
(5) The OD of embedded slip is smaller than that of cone and the slips hide in cone before setting, which can protect slips from collisions in the process of running in the wellbore; taper and gap between slip and cone are confirmed by experiment and different processing technology; every slip's side contains two Inclined surfaces, which makes sure the effect of setting; there are six slips that implement hanging reliably and setting steadily and reduce damage for the upper casings furthest.
(6) Active key type structure is designed for preventing slip form setting in advance.
The above specification is only an overview of the present invention, in order to be able to more clearly understand the technical means of the present invention and can carry out in accordance with the specification, the contents of the following are better implementation examples of the present invention and has appended drawings.
Brief Description of Drawings Fig.1 is a quarter-sectional view of A Rotatable Liner Hanger With Embedded Slip of Multiple Cones;
Fig.2 is a partial view in an expander window of the cooperate between slips and cone;
Fig.3 is a partial view in cross-section take along line A-A of Fig.1;
Fig.4 is a partial view in an expander window of the heavy-duty bearing.
Detailed Description of Embodiments For technical means and effect to achieve the expected objective of invention are further elaborated, by using of the appended drawings and a better implementation example, specific implementation methods, structures, characteristics and effect of A rotatable liner hanger with embedded slip of multiple cones produced according to this invention are described, details as following. In following instruction, "one implementation example" or "implementation examples" are not necessarily the same example. Besides, one or more cases of specific characteristics, structures, or feature can be made of any suitable form combination.
As shown in Figure 1, a rotatable liner hanger with embedded slip of multiple cones includes: the liner hanger contains Body (1), Lock Ring (2), Adjusting Gauge Ring (3), Bearing End Face Ring (4), Bearing Protection Ring (5), Adjusting Ring (6), Cone(7), Slip (8), C-ring (9), Connector Ring (10), Dog (11), Cylinder Top Ring (12), Cylinder (13), Key Screws (16), Shear Screws (17), and Gauge Ring (18).
The top of Body (1) connects the top packer and running tool and the bottom connects the liner, which owns good bearing capacity, torsional and sealing ability.
Other parts are installed on the Body (1). And there are six slips (8) in the Cone (7), which can share the load on every piece of slip and reduce damage for the upper casings furthest. As shown in figure 2, every slip's back side contains two Inclined Surfaces (20), and there is an angle between the two Inclined Surfaces (20) and axis of cone (7). There are six pieces of Slips (8) in Cone (7), and the slips distributed in circumferential direction uniformly. Each column contains two Conical Grooves (18) that have rectangular hole throughout the Cone (7). The front Side (19) of Conical Grooves is inclined surfaces that play a slide guiding role. And there is a certain included angle between trajectory direction and the Cone (7). As shown in figure 3, there is an inverted cone track on the inclined surfaces (19) (20) of the cone and slips. The cone (7) and slips (8) is connected with inverted cone track whose angle is same to the angle of the inclined surface(19). As shown in figure 2, in installing, two inclined Surfaces (20) of the slip are attached closely to the surface of the cone (7). The inverted cone track (21) of the cone (7) are clearance fit with the inverted cone track (22) of the slips (8). The angle between the Inclined Surfaces (20) and axis of Slip (8) and the angle between the inverted cone track (22) of the slips (8) and axis of Slip (8), another between the two Sides (19) of Conical Grooves and axis of Cone (7) and the angle between the inverted cone track (21) of the cone (7) and axis of cone (7) are same size and have a same slide angle with that between Slip (8) and Cone (7).
Before setting, the Slips (8) hide in thc Cone (7), two Inclined Surfaces (20) are attached closely to the two Sides (19) of Conical Grooves, and the inverted cone track (21) of the cone
The above specification is only an overview of the present invention, in order to be able to more clearly understand the technical means of the present invention and can carry out in accordance with the specification, the contents of the following are better implementation examples of the present invention and has appended drawings.
Brief Description of Drawings Fig.1 is a quarter-sectional view of A Rotatable Liner Hanger With Embedded Slip of Multiple Cones;
Fig.2 is a partial view in an expander window of the cooperate between slips and cone;
Fig.3 is a partial view in cross-section take along line A-A of Fig.1;
Fig.4 is a partial view in an expander window of the heavy-duty bearing.
Detailed Description of Embodiments For technical means and effect to achieve the expected objective of invention are further elaborated, by using of the appended drawings and a better implementation example, specific implementation methods, structures, characteristics and effect of A rotatable liner hanger with embedded slip of multiple cones produced according to this invention are described, details as following. In following instruction, "one implementation example" or "implementation examples" are not necessarily the same example. Besides, one or more cases of specific characteristics, structures, or feature can be made of any suitable form combination.
As shown in Figure 1, a rotatable liner hanger with embedded slip of multiple cones includes: the liner hanger contains Body (1), Lock Ring (2), Adjusting Gauge Ring (3), Bearing End Face Ring (4), Bearing Protection Ring (5), Adjusting Ring (6), Cone(7), Slip (8), C-ring (9), Connector Ring (10), Dog (11), Cylinder Top Ring (12), Cylinder (13), Key Screws (16), Shear Screws (17), and Gauge Ring (18).
The top of Body (1) connects the top packer and running tool and the bottom connects the liner, which owns good bearing capacity, torsional and sealing ability.
Other parts are installed on the Body (1). And there are six slips (8) in the Cone (7), which can share the load on every piece of slip and reduce damage for the upper casings furthest. As shown in figure 2, every slip's back side contains two Inclined Surfaces (20), and there is an angle between the two Inclined Surfaces (20) and axis of cone (7). There are six pieces of Slips (8) in Cone (7), and the slips distributed in circumferential direction uniformly. Each column contains two Conical Grooves (18) that have rectangular hole throughout the Cone (7). The front Side (19) of Conical Grooves is inclined surfaces that play a slide guiding role. And there is a certain included angle between trajectory direction and the Cone (7). As shown in figure 3, there is an inverted cone track on the inclined surfaces (19) (20) of the cone and slips. The cone (7) and slips (8) is connected with inverted cone track whose angle is same to the angle of the inclined surface(19). As shown in figure 2, in installing, two inclined Surfaces (20) of the slip are attached closely to the surface of the cone (7). The inverted cone track (21) of the cone (7) are clearance fit with the inverted cone track (22) of the slips (8). The angle between the Inclined Surfaces (20) and axis of Slip (8) and the angle between the inverted cone track (22) of the slips (8) and axis of Slip (8), another between the two Sides (19) of Conical Grooves and axis of Cone (7) and the angle between the inverted cone track (21) of the cone (7) and axis of cone (7) are same size and have a same slide angle with that between Slip (8) and Cone (7).
Before setting, the Slips (8) hide in thc Cone (7), two Inclined Surfaces (20) are attached closely to the two Sides (19) of Conical Grooves, and the inverted cone track (21) of the cone
(7) are clearance fit with the inverted cone track (22) of the slips (8).
After setting, there is a channel between the slips (8) and Cone (7), and the slips (8) connect directly with Connector Ring (10); and there are Dogs (11) between Connector Ring (10) and Cylinder Top Ring (12). When Cylinder (13) drives the Cylinder Top Ring (12), Dogs (11) will shrink inner of the Cylinder Top Ring (12). Only when cylinder (13) moves, can the setting function of Dogs (11) in advance disable, and the liner hanger set. This will further improve the reliability of the hanger. Connector Ring (10) and Body (1) can rotate relatively.
There are two Key Screws (16) that prevent the relative motion of the Cylinder (13) and Body (1) and limit the Cylinder's (13) axial motion. There are some Shear Screws (17) under Key Screws (16) and the Cylinder (13) is fixed on the Gauge Ring (18) by the Shear Screws (17). After the Shear Screws (17) are sheared, the Cylinder (13) will move up along the Body (1) by following Key Screws (16).
A Gauge Ring (18) is installed on the Body under the Cylinder (13) and fixed on the Body by Lock Ring (25). The Gauge Ring (18) with Body (1) can't rotate relatively. And the OD of the Gauge Ring (18) is maximum one of the liner hanger.
As shown in figure 4, two Bearing End Face Rings (4) and one Bearing Protection Ring (5) and four seal rings (23) are installed on the Body (1) over the Cone (7), and the heavy-duty Bearing is designed by slide lubricant, which makes sure that can rotate under overload. Sealing design of the heavy-duty bearing ensured the sealing when rotate.
The design of the Slips (8) and the Cone (7) discards the design that load is achieved by single sliding cone cooperation of the slip's interior conical surface and the cone's exterior conical surface. The design of inverted cone track on the inclined surface can hide the Slip (8) in the Cone (7) all the time, so that can prevent the Slips (8) from scratches and broken.
Besides, there are six slips (8) in the Cone (7), which can share the load on every piece of slip and reduce damage for the upper casings furthest.
This liner hanger is set by hydraulic pressure. When the liquid pressure in the body after reaching a certain value, the Shear Screws (15) will be sheared and the Cylinder (13) and Cylinder Top Ring (12) will be ascended together, pushing the Connector Ring (10) and the Slips (8) up. While the Slip (8) is upward, it will expand outward and set on the outer casing.
After setting, the Slips (8) will pass the force of whole liner to the Cone (7), and then pass to bearing which is contained by two Bearing End Face Rings (4) and one Bearing Protection Ring (5) through the Adjusting Ring (6) (the above four components are installed on the Body (1), to realize the load transfer rely on end face contact). The heavy-duty and low torque bearing is not only can withstand high load, and reduce the rotational torque.
When rotating at the process of cementing, the Body (1), the Cylinder Top Ring (12) and the Cylinder (13) and so on are rotating with the liner, while the Cone (7) and the Slips (8) are stopped. After setting, the channel between Slip (8) and Cone (7) and the Trapezoid Grooves (24) provide ways for flowing of cementing slurry.
In order to prevent slip from setting in advance, active key type structure is designed.
The Dogs (11) can prevent slip form setting in advance. When the Cylinder (13) doesn't move, there are external forces on the Slips (8), setting in advance will not happen. If only the Cylinder (13) doesn't move, Dogs (11) will not shrink inner of the Cylinder Top Ring (12), and the slips can't be upward with Connector Ring (10) and set.
What has been discussed above is only a better implementation example rather than make restrictions in any form of the invention. According to the technical essence of the invention, any simple changes to the above example, equivalent change and modification, still belongs to the technical solution of this invention.
After setting, there is a channel between the slips (8) and Cone (7), and the slips (8) connect directly with Connector Ring (10); and there are Dogs (11) between Connector Ring (10) and Cylinder Top Ring (12). When Cylinder (13) drives the Cylinder Top Ring (12), Dogs (11) will shrink inner of the Cylinder Top Ring (12). Only when cylinder (13) moves, can the setting function of Dogs (11) in advance disable, and the liner hanger set. This will further improve the reliability of the hanger. Connector Ring (10) and Body (1) can rotate relatively.
There are two Key Screws (16) that prevent the relative motion of the Cylinder (13) and Body (1) and limit the Cylinder's (13) axial motion. There are some Shear Screws (17) under Key Screws (16) and the Cylinder (13) is fixed on the Gauge Ring (18) by the Shear Screws (17). After the Shear Screws (17) are sheared, the Cylinder (13) will move up along the Body (1) by following Key Screws (16).
A Gauge Ring (18) is installed on the Body under the Cylinder (13) and fixed on the Body by Lock Ring (25). The Gauge Ring (18) with Body (1) can't rotate relatively. And the OD of the Gauge Ring (18) is maximum one of the liner hanger.
As shown in figure 4, two Bearing End Face Rings (4) and one Bearing Protection Ring (5) and four seal rings (23) are installed on the Body (1) over the Cone (7), and the heavy-duty Bearing is designed by slide lubricant, which makes sure that can rotate under overload. Sealing design of the heavy-duty bearing ensured the sealing when rotate.
The design of the Slips (8) and the Cone (7) discards the design that load is achieved by single sliding cone cooperation of the slip's interior conical surface and the cone's exterior conical surface. The design of inverted cone track on the inclined surface can hide the Slip (8) in the Cone (7) all the time, so that can prevent the Slips (8) from scratches and broken.
Besides, there are six slips (8) in the Cone (7), which can share the load on every piece of slip and reduce damage for the upper casings furthest.
This liner hanger is set by hydraulic pressure. When the liquid pressure in the body after reaching a certain value, the Shear Screws (15) will be sheared and the Cylinder (13) and Cylinder Top Ring (12) will be ascended together, pushing the Connector Ring (10) and the Slips (8) up. While the Slip (8) is upward, it will expand outward and set on the outer casing.
After setting, the Slips (8) will pass the force of whole liner to the Cone (7), and then pass to bearing which is contained by two Bearing End Face Rings (4) and one Bearing Protection Ring (5) through the Adjusting Ring (6) (the above four components are installed on the Body (1), to realize the load transfer rely on end face contact). The heavy-duty and low torque bearing is not only can withstand high load, and reduce the rotational torque.
When rotating at the process of cementing, the Body (1), the Cylinder Top Ring (12) and the Cylinder (13) and so on are rotating with the liner, while the Cone (7) and the Slips (8) are stopped. After setting, the channel between Slip (8) and Cone (7) and the Trapezoid Grooves (24) provide ways for flowing of cementing slurry.
In order to prevent slip from setting in advance, active key type structure is designed.
The Dogs (11) can prevent slip form setting in advance. When the Cylinder (13) doesn't move, there are external forces on the Slips (8), setting in advance will not happen. If only the Cylinder (13) doesn't move, Dogs (11) will not shrink inner of the Cylinder Top Ring (12), and the slips can't be upward with Connector Ring (10) and set.
What has been discussed above is only a better implementation example rather than make restrictions in any form of the invention. According to the technical essence of the invention, any simple changes to the above example, equivalent change and modification, still belongs to the technical solution of this invention.
Claims (10)
1. A rotatable liner hanger with embedded slip of multiple cones comprising:
the liner hanger contains Body (1), Lock Ring (2), Adjusting Gauge Ring (3), Bearing End Face Ring (4), Bearing Protection Ring (5), Adjusting Ring (6), Cone(7), Slip (8), C-ring (9), Connector Ring (10), Dog (11), Cylinder Top Ring (12), Cylinder (13), Key Screws (16), Shear Screws (17), and Gauge Ring (18); wherein there are six pieces of Slips (8) in Cone (7);
each slip's back side contains two Inclined Surfaces (19);
the slips distributed in circumferential direction uniformly;
each column contains two Conical Grooves that have rectangular hole throughout the Cone (7);
the two Sides (19) of Conical Grooves are inclined surfaces;
the end face of Cone(7) have six uniform distribution Trapezoid Grooves (24);
the OD of embedded Slip (8) is smaller than that of Cone (7) and the slips hide in cone before setting;
the two inclined surfaces (20) of Slip (8) are clearance fit with the two Sides (19) of cone (7);
the cone (7) and slips (8) is connected with inverted cone track on the inclined surfaces (19) (20) of the cone and slips;
after setting, the channel between Slip (8) and Cone (7) and the Trapezoid Grooves (24) are ways for flowing of cementing slurry;
Slip (8) connects directly with Connector Ring (10);
Cone (7) and Body (1) are clearance fit, and Cone (7) can rotate around the Body (1);
Slide bearing contains two Bearing End Face Rings (4), one Bearing Protection Ring (5) and four seal rings (23); and the top of Body (1) connects the top packer and running tool and the bottom connects the liner.
the liner hanger contains Body (1), Lock Ring (2), Adjusting Gauge Ring (3), Bearing End Face Ring (4), Bearing Protection Ring (5), Adjusting Ring (6), Cone(7), Slip (8), C-ring (9), Connector Ring (10), Dog (11), Cylinder Top Ring (12), Cylinder (13), Key Screws (16), Shear Screws (17), and Gauge Ring (18); wherein there are six pieces of Slips (8) in Cone (7);
each slip's back side contains two Inclined Surfaces (19);
the slips distributed in circumferential direction uniformly;
each column contains two Conical Grooves that have rectangular hole throughout the Cone (7);
the two Sides (19) of Conical Grooves are inclined surfaces;
the end face of Cone(7) have six uniform distribution Trapezoid Grooves (24);
the OD of embedded Slip (8) is smaller than that of Cone (7) and the slips hide in cone before setting;
the two inclined surfaces (20) of Slip (8) are clearance fit with the two Sides (19) of cone (7);
the cone (7) and slips (8) is connected with inverted cone track on the inclined surfaces (19) (20) of the cone and slips;
after setting, the channel between Slip (8) and Cone (7) and the Trapezoid Grooves (24) are ways for flowing of cementing slurry;
Slip (8) connects directly with Connector Ring (10);
Cone (7) and Body (1) are clearance fit, and Cone (7) can rotate around the Body (1);
Slide bearing contains two Bearing End Face Rings (4), one Bearing Protection Ring (5) and four seal rings (23); and the top of Body (1) connects the top packer and running tool and the bottom connects the liner.
2. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, further comprising: the two Inclined Surfaces (20) of Slip (8) being clearance fit with the two Inclined Surfaces (19) of cone (7), and the inverted cone track (22) of the slips (8) being clearance fit with the inverted cone track (21) of the cone (7).
3. The rotatable liner hanger with embedded slip of multiple cones, according to claim 2, wherein: included angle between the Inclined Surfaces (20) and axis of Slip (8) and the angle between the inverted cone track (22) of the slips (8) and axis of Slip (8), another between the two Sides (19) of Conical Grooves and axis of Cone (7) and the angle between the inverted cone track (21) of the cone (7) and axis of cone (7) are same size and have a same slide angle with that between Slip (8) and Cone (7);
and the Slip (8), Cone (7) and Body (1) are same axial.
and the Slip (8), Cone (7) and Body (1) are same axial.
4. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, wherein: the heavy-duty Bearing is designed by slide lubricant and contains two Bearing End Face Rings (4) and one Bearing Protection Ring (5) and four seal rings (23), which makes sure that can rotate under overload.
5. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, wherein: the two seal ring between Bearing End Face Ring (4) and Bearing Protection Ring (5) and the tow seal ring between Bearing End Face Ring (4) and the body (1) compose the sealing system of the heavy-duty Bearing, and the sealing design of the heavy-duty bearing ensure the sealing when rotate.
6. The rotatable liner hanger with embedded slip of multiple cones, according to claim 2, wherein: there are six slips installed on Cone (7) that can share the load on every piece of slip and reduce damage for the upper casings furthest.
7. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, wherein: there is a C-ring (9) between Cone (7) and Body (1), and the Cone (7) and Body (1) can rotate relatively.
8. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, wherein: there are some Dogs (11) between Connector Ring (10) and Cylinder Top Ring (12), Dogs (11) will contract to inner of the Cylinder Top Ring (12) when Cylinder (13) drives the Cylinder Top Ring (12), and Connector Ring (10) and Body (1) can rotate relatively.
9. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, wherein: there are two Key Screws (16) and some Shear Screws (17) which can fix the Cylinder (13) on the Gauge Ring (18).
10. The rotatable liner hanger with embedded slip of multiple cones, according to claim 1, wherein: the Gauge Ring (18) is fixed on body (1) by Lock Ring (25), and the OD of the Gauge Ring (18) is maximum one of the liner hanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2908981A CA2908981C (en) | 2015-10-20 | 2015-10-20 | A rotatable liner hanger with embedded slip of multiple cones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2908981A CA2908981C (en) | 2015-10-20 | 2015-10-20 | A rotatable liner hanger with embedded slip of multiple cones |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2908981A1 CA2908981A1 (en) | 2017-04-20 |
| CA2908981C true CA2908981C (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2908981A Active CA2908981C (en) | 2015-10-20 | 2015-10-20 | A rotatable liner hanger with embedded slip of multiple cones |
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| Country | Link |
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| CA (1) | CA2908981C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979576B (en) * | 2018-07-20 | 2020-02-21 | 中国石油大学(北京) | Permanent liner hanger |
| CN117514069A (en) * | 2023-11-29 | 2024-02-06 | 深圳市迈威石油设备技术有限公司 | Prevent to sit in midway and block's pinning nipple joint |
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|---|---|
| CA2908981A1 (en) | 2017-04-20 |
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