WO2022031509A1 - Variable bore ram packer and ram-type blowout preventer using same - Google Patents
Variable bore ram packer and ram-type blowout preventer using same Download PDFInfo
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- WO2022031509A1 WO2022031509A1 PCT/US2021/043654 US2021043654W WO2022031509A1 WO 2022031509 A1 WO2022031509 A1 WO 2022031509A1 US 2021043654 W US2021043654 W US 2021043654W WO 2022031509 A1 WO2022031509 A1 WO 2022031509A1
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- WIPO (PCT)
- Prior art keywords
- ram
- packer
- shutter assembly
- blowout preventer
- rigid
- Prior art date
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Classifications
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- 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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
- E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
Definitions
- This invention relates, in general, to pressure control systems in downhole oil and gas drilling operations and, in particular, to a variable bore ram packer for a ram-type blowout preventer and a ram-type blowout preventer using the same.
- Ram-type blowout preventers are part of pressure control systems utilized in oil and gas drilling operations to control unexpected wellbore pressure increases or spikes known as “kicks.”
- Typical ram-type blowout preventers use ram packers having inserts of hard rubber as a sealing element which allows only limited extension in order to conform to different pipe diameters.
- Such ram packers having inserts of hard rubber sealing elements may become damaged and, as a result, appropriate seals are not maintained against different pipe diameters. Accordingly, there is a need for improved ram packers for ram-type blowout preventers that have the benefit of maintaining seals across a range of pipe diameters over the life of the hydrocarbon producing well.
- variable bore ram packer in a ram-type blowout preventer and a ram-type blowout preventer using the same that would improve upon existing limitations in functionality. It would also be desirable to enable a mechanical-based solution that would provide enhanced operational efficiency and sealing across a range of pipe diameters over the life of the hydrocarbon producing well.
- a variable bore ram packer for a ram-type blowout preventer and a ram-type blowout preventer using the same are disclosed.
- some embodiments of the variable bore ram packer include an upper shutter assembly that is vertically spaced from a lower shutter assembly with a packer member vertically interposed therebetween.
- Each of the upper shutter assembly and the lower shutter assembly opening and closing as a mechanical iris diaphragm having a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer.
- the packer member is an elastomeric material having a central semi-elliptical opening sized to fit between the upper shutter assembly and the lower shutter assembly while fitting closely about the tubular member upon close of the ram-type blowout preventer.
- some embodiments of the ram-type blowout preventer include a body with a pair of opposing ram blocks positioned within the body.
- Each of the ram blocks have a variable bore ram packer held in a plurality of recesses.
- each of the variable bore ram packers include an upper shutter assembly that is vertically spaced from a lower shutter assembly with a packer member vertically interposed therebetween.
- Each of the upper shutter assembly and the lower shutter assembly opening and closing as a mechanical iris diaphragm having a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer.
- the packer member is an elastomeric material having a central semi-elliptical opening sized to fit between the upper shutter assembly and the lower shutter assembly while fitting closely about the tubular member upon close of the ram-type blowout preventer.
- Figure 1 is a perspective view depicting one embodiment of a ram-type blowout preventer utilizing a variable bore ram packer, according to the teachings presented herein;
- Figure 2 is a top plan view of an upper shutter assembly depicted in figure 1;
- Figure 3 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in an initial position of deployment;
- Figure 4 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a first phase of deployment;
- Figure 5 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a second phase of deployment;
- Figure 6 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a third phase of deployment.
- a body 12 includes a ram block 14 positioned within the body 12.
- the body 12 includes a pair of opposing ram blocks.
- the ram block 14 includes recesses 16.
- a variable bore ram packer 18 is held in the recesses 16 of the ram block 14.
- the variable bore ram packer 18 includes an upper shutter assembly 20, a lower shutter assembly 22, and a packer member 24.
- the upper shutter assembly 20 is vertically spaced from the lower shutter assembly 22 with the packer member 24 interposed between the upper shutter assembly 20 and the lower shutter assembly 22.
- the upper shutter assembly 20 includes a rigid base plate 40 having rigid inserts 42, including, for example, rigid inserts 44, 46, coupled thereto by an iris shutter subassembly 48.
- the rigid inserts 44 have a central partial aperture 50 sized to fit closely about a tubular member upon close of the ram-type blowout preventer 10.
- the lower shutter assembly 22 has a similar structure and function. That is, the lower shutter assembly 22 includes a rigid base plate having rigid inserts coupled thereto by an iris shutter subassembly.
- the rigid inserts may have a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer 10.
- each of the upper shutter assembly 20 and the lower shutter assembly 22 may cause the rigid inserts 44 to open and close via the respective iris shutter subassembly 48 as a mechanical iris diaphragm 116.
- the iris shutter subassembly 48 includes a driver member 60 biasedly coupled by a coiled spring 62 to the ram block 14 of the ram-type blowout preventer 10.
- the driver member 60 has slots 64, 66 therein.
- a linkage member 68 is housed within the rigid base plate 40.
- the linkage member 68 includes an outer connection surface 70 and an inner connection surface such that the outer connection surface 70 is moveably secured within the slot 64.
- the inner connection surface may be coupled to the rigid insert 44.
- a linkage member 72 is housed within the rigid base plate 40 and, similar to the linkage member 68, the linkage member 72 has an outer connection surface 74 and an inner connection surface.
- the outer connection surface 74 may be moveably secured within the slot 66 and the inner connection surface may be coupled to the rigid insert 46.
- the rigid base plate 40 may comprise a high strength steel.
- the rigid inserts 42 may also comprise a high strength steel.
- the linkage member 68 and the linkage member 72 are radially separated such that the rigid insert 44 and the rigid insert 46 move inward in forming the central partial aperture 50.
- the linkage member 68 and the linkage member 72 are radially gathered closer together such that the rigid insert 44 and the rigid insert 46 move outward in forming the central partial aperture 50.
- the packer member 24 may be an elastomeric material 80 having a central semielliptical opening 82 sized to fit between the upper shutter assembly 20 and the lower shutter assembly 22 while fitting closely about the tubular member upon close of the ram-type blowout preventer 10.
- the packer member 24 may include a high strength steel embedded with the elastomeric material.
- the ram-type blowout preventer 10 includes the body 12 having the ram block 14 positioned within the body 12 as well as a ram block 102.
- the ram block 102 is part of the body 12 of the ram-type blowout preventer 10 and the ram block 102 is positioned in an opposing relationship to the ram block 14.
- the ram block 14 includes the variable bore ram packer 18 and similarly, the ram block 102 includes a variable bore ram packer 104.
- a first exemplary phase of operation which begins with figure 3 and ends at figure 4, hydraulic cylinders are actuated in the ram-type blowout preventer 10 and the ram blocks 14, 102 move toward each other such that the base plate 40 of the variable bore ram packer 18 contacts a base plate 106 of the variable bore ram packer 104.
- the packer member 24 of the variable bore ram packer 18 and a packer member 108 of the variable bore ram packer 104 are spatially separated and not in contact.
- a second exemplary phase of operation which begins with figure 4 and ends with figure 5, once contact is made between the base plates 40, 106, the base plates no longer advance; rather, as the ram blocks 14, 102 continue to move forward, the base plates 40, 106 are pushed inside the ram blocks 14, 102 and the coiled spring 62 and a coiled spring 110 compress.
- the drive members including drive member 60, of the iris shutter subassembly 48 of the variable bore ram packer 18 and drive members 112 of ins shutter subassembly 114 of the variable bore ram packer 104 each begin closing as a mechanical iris diaphragm 116.
- the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104 are in contact.
- a third exemplary phase of operation which begins with figure 5 and ends with figure 6, once contact is made between the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104, the ram blocks 14, 102 continue to move forward causing the iris shutter subassemblies 48, 114 to continue to operate as the mechanical iris diaphragm 116.
- the rigid inserts 42 of the upper and lower shutter assemblies 20, 22 of the ram block 14 and rigid inserts belonging to the upper and lower shutter assemblies of the ram block 102 begin moving together to form the central partial aperture 50 sized to fit closely about the tubular member.
- the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104 flow toward the tubular member behind the respective rigid inserts 44, 116.
- the ram blocks 14, 102 continue to move forward and the packer members 24, 108 fit closely about the tubular member to close any gaps.
- the pressure inside the packer members 24, 108 increases and stops the movement of the ram blocks 14, 102.
- the sealing process is then complete and the packer members 24, 108 provide the elastic sealing insert necessary to achieve constant pressure across the contact surface of the ram-type blowout preventer 10 and the tubular member.
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- Environmental & Geological Engineering (AREA)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A variable bore ram packer (18) and a ram-type blowout preventer (10) using the same are disclosed. In one embodiment of the variable bore ram packer (18), an upper shutter assembly (20) is vertically spaced from a lower shutter assembly (22) with a packer member (24) vertically interposed therebetween. Each of the upper shutter assembly (20) and the lower shutter assembly (22) opening and closing as a mechanical iris diaphragm (116) having a central partial aperture (50) sized to fit closely about a tubular member upon close of the ram-type blowout preventer (10). The packer member (24) is an elastomeric material (80) having a central semi-elliptical opening (82) sized to fit between the upper shutter assembly (20) and the lower shutter assembly (22) while fitting closely about the tubular member upon close of the ram-type blowout preventer (10).
Description
VARIABLE BORE RAM PACKER AND RAM-TYPE BLOWOUT PREVENTER
USING SAME
TECHNICAL FIELD OF THE INVENTION
This invention relates, in general, to pressure control systems in downhole oil and gas drilling operations and, in particular, to a variable bore ram packer for a ram-type blowout preventer and a ram-type blowout preventer using the same.
BACKGROUND OF THE INVENTION
Ram-type blowout preventers are part of pressure control systems utilized in oil and gas drilling operations to control unexpected wellbore pressure increases or spikes known as “kicks.” Typical ram-type blowout preventers use ram packers having inserts of hard rubber as a sealing element which allows only limited extension in order to conform to different pipe diameters. Such ram packers having inserts of hard rubber sealing elements may become damaged and, as a result, appropriate seals are not maintained against different pipe diameters. Accordingly, there is a need for improved ram packers for ram-type blowout preventers that have the benefit of maintaining seals across a range of pipe diameters over the life of the hydrocarbon producing well.
SUMMARY OF THE INVENTION
It would be advantageous to achieve a variable bore ram packer in a ram-type blowout preventer and a ram-type blowout preventer using the same that would improve upon existing limitations in functionality. It would also be desirable to enable a mechanical-based solution that would provide enhanced operational efficiency and sealing across a range of pipe diameters over the life of the hydrocarbon producing well. To better address one or more of these concerns, a variable bore ram packer for a ram-type blowout preventer and a ram-type blowout preventer using the same are disclosed. In one aspect, some embodiments of the variable bore ram packer include an upper shutter assembly that is vertically spaced from a lower shutter assembly with a packer member vertically interposed therebetween. Each of the upper shutter assembly and the lower shutter assembly opening and closing as a mechanical
iris diaphragm having a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer. The packer member is an elastomeric material having a central semi-elliptical opening sized to fit between the upper shutter assembly and the lower shutter assembly while fitting closely about the tubular member upon close of the ram-type blowout preventer.
In another aspect, some embodiments of the ram-type blowout preventer include a body with a pair of opposing ram blocks positioned within the body. Each of the ram blocks have a variable bore ram packer held in a plurality of recesses. As previously discussed, each of the variable bore ram packers include an upper shutter assembly that is vertically spaced from a lower shutter assembly with a packer member vertically interposed therebetween. Each of the upper shutter assembly and the lower shutter assembly opening and closing as a mechanical iris diaphragm having a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer. The packer member is an elastomeric material having a central semi-elliptical opening sized to fit between the upper shutter assembly and the lower shutter assembly while fitting closely about the tubular member upon close of the ram-type blowout preventer. These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
BRIEF DESCRIPTION OF THE DRAWINGS
For a more complete understanding of the features and advantages of the present invention, reference is now made to the detailed description of the invention along with the accompanying figures in which corresponding numerals in the different figures refer to corresponding parts and in which:
Figure 1 is a perspective view depicting one embodiment of a ram-type blowout preventer utilizing a variable bore ram packer, according to the teachings presented herein;
Figure 2 is a top plan view of an upper shutter assembly depicted in figure 1;
Figure 3 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in an initial position of deployment;
Figure 4 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a first phase of deployment;
Figure 5 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a second phase of deployment; and
Figure 6 is a top plan view of the ram-type blowout preventer utilizing a variable bore ram packer depicted in figure 1 in a third phase of deployment.
DETAILED DESCRIPTION OF THE INVENTION
While the making and using of various embodiments of the present invention are discussed in detail below, it should be appreciated that the present invention provides many applicable inventive concepts, which can be embodied in a wide variety of specific contexts. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention, and do not delimit the scope of the present invention.
Referring initially to figure 1 and figure 2, therein is depicted one embodiment of a ram- type blowout preventer 10 being employed in an oil and gas drilling operation, for example. A body 12 includes a ram block 14 positioned within the body 12. Although not shown in figures 1 and 2, it should be appreciated that the body 12 includes a pair of opposing ram blocks. As shown, the ram block 14 includes recesses 16. A variable bore ram packer 18 is held in the recesses 16 of the ram block 14. The variable bore ram packer 18 includes an upper shutter assembly 20, a lower shutter assembly 22, and a packer member 24. The upper shutter assembly 20 is vertically spaced from the lower shutter assembly 22 with the packer member 24 interposed between the upper shutter assembly 20 and the lower shutter assembly 22.
The upper shutter assembly 20 includes a rigid base plate 40 having rigid inserts 42, including, for example, rigid inserts 44, 46, coupled thereto by an iris shutter subassembly 48. The rigid inserts 44 have a central partial aperture 50 sized to fit closely about a tubular member upon close of the ram-type blowout preventer 10. The lower shutter assembly 22 has a similar structure and function. That is, the lower shutter assembly 22 includes a rigid base plate having rigid inserts coupled thereto by an iris shutter subassembly. The rigid inserts may have a central partial aperture sized to fit closely about a tubular member upon close of the ram-type blowout preventer 10.
With respect to the upper shutter assembly 20 as an example, each of the upper shutter assembly 20 and the lower shutter assembly 22 may cause the rigid inserts 44 to open and close via the respective iris shutter subassembly 48 as a mechanical iris diaphragm 116. In one embodiment, the iris shutter subassembly 48 includes a driver member 60 biasedly coupled by a coiled spring 62 to the ram block 14 of the ram-type blowout preventer 10. As shown, the driver member 60 has slots 64, 66 therein. A linkage member 68 is housed within the rigid base plate 40. The linkage member 68 includes an outer connection surface 70 and an inner connection surface such that the outer connection surface 70 is moveably secured within the slot 64. The inner connection surface may be coupled to the rigid insert 44. A linkage member 72 is housed within the rigid base plate 40 and, similar to the linkage member 68, the linkage member 72 has an outer connection surface 74 and an inner connection surface.
The outer connection surface 74 may be moveably secured within the slot 66 and the inner connection surface may be coupled to the rigid insert 46. The rigid base plate 40 may comprise a high strength steel. Similarly, the rigid inserts 42 may also comprise a high strength steel.
During operation, in response to a closing of the ram-type blowout preventer 10, the linkage member 68 and the linkage member 72 are radially separated such that the rigid insert 44 and the rigid insert 46 move inward in forming the central partial aperture 50. On the other hand, in response to an opening of the ram-type blowout preventer 10, the linkage member 68 and the linkage member 72 are radially gathered closer together such that the rigid insert 44 and the rigid insert 46 move outward in forming the central partial aperture 50.
The packer member 24 may be an elastomeric material 80 having a central semielliptical opening 82 sized to fit between the upper shutter assembly 20 and the lower shutter assembly 22 while fitting closely about the tubular member upon close of the ram-type blowout preventer 10. The packer member 24 may include a high strength steel embedded with the elastomeric material.
Referring now to figure 3, figure 4, figure 5, and figure 6, working principles of the ram- type blowout preventer 10 utilizing the variable bore ram packer 18 will be described in terms of the ram-type blowout preventer 10 in an initial exemplary position and three exemplary phases of deployment. With respect to the initial exemplary position in figure 3, the ram-type blowout preventer 10 includes the body 12 having the ram block 14 positioned within the body 12 as well as a ram block 102. The ram block 102 is part of the body 12 of the ram-type blowout preventer 10 and the ram block 102 is positioned in an opposing relationship to the ram block 14. The ram block 14 includes the variable bore ram packer 18 and similarly, the ram block 102 includes a variable bore ram packer 104.
During a first exemplary phase of operation which begins with figure 3 and ends at figure 4, hydraulic cylinders are actuated in the ram-type blowout preventer 10 and the ram blocks 14, 102 move toward each other such that the base plate 40 of the variable bore ram packer 18 contacts a base plate 106 of the variable bore ram packer 104. During this phase of operation, the packer member 24 of the variable bore ram packer 18 and a packer member 108 of the variable bore ram packer 104 are spatially separated and not in contact.
In a second exemplary phase of operation, which begins with figure 4 and ends with figure 5, once contact is made between the base plates 40, 106, the base plates no longer advance; rather, as the ram blocks 14, 102 continue to move forward, the base plates 40, 106 are pushed inside the ram blocks 14, 102 and the coiled spring 62 and a coiled spring 110 compress. As the respective base plates 40, 106 are moving relative to the ram blocks 14, 102, the drive members, including drive member 60, of the iris shutter subassembly 48 of the
variable bore ram packer 18 and drive members 112 of ins shutter subassembly 114 of the variable bore ram packer 104 each begin closing as a mechanical iris diaphragm 116. At the end of the second exemplary phase of operation, the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104 are in contact.
In a third exemplary phase of operation, which begins with figure 5 and ends with figure 6, once contact is made between the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104, the ram blocks 14, 102 continue to move forward causing the iris shutter subassemblies 48, 114 to continue to operate as the mechanical iris diaphragm 116. At this time, the rigid inserts 42 of the upper and lower shutter assemblies 20, 22 of the ram block 14 and rigid inserts belonging to the upper and lower shutter assemblies of the ram block 102 begin moving together to form the central partial aperture 50 sized to fit closely about the tubular member. As the ram blocks 14, 102 continue to move forward, the packer member 24 of the variable bore ram packer 18 and the packer member 108 of the variable bore ram packer 104 flow toward the tubular member behind the respective rigid inserts 44, 116. Once the respective rigid inserts 44, 116 create the central partial aperture 50 - or fully formed central aperture, sized to fit closely about the tubular member, the ram blocks 14, 102 continue to move forward and the packer members 24, 108 fit closely about the tubular member to close any gaps. Once all gaps have been closed, the pressure inside the packer members 24, 108 increases and stops the movement of the ram blocks 14, 102. The sealing process is then complete and the packer members 24, 108 provide the elastic sealing insert necessary to achieve constant pressure across the contact surface of the ram-type blowout preventer 10 and the tubular member.
The order of execution or performance of the methods and techniques illustrated and described herein is not essential, unless otherwise specified. That is, elements of the methods and techniques may be performed in any order, unless otherwise specified, and that the methods may include more or less elements than those disclosed herein. For example, it is contemplated that executing or performing a particular element before, contemporaneously with, or after another element are all possible sequences of execution.
While this invention has been described with reference to illustrative embodiments, this description is not intended to be construed in a limiting sense. Various modifications and combinations of the illustrative embodiments as well as other embodiments of the invention, will be apparent to persons skilled in the art upon reference to the description. It is, therefore, intended that the appended claims encompass any such modifications or embodiments.
Claims
1. A variable bore ram packer (18) for use in a ram- type blowout preventer (10) for oil and gas drilling operations, the variable bore ram packer (18) comprising: an upper shutter assembly (20) vertically spaced from a lower shutter assembly (22), each of the upper shutter assembly (20) and the lower shutter assembly (22) including a rigid base plate (40) having a plurality of rigid inserts (42) coupled thereto by an iris shutter subassembly (48), the plurality of rigid inserts (42) having a central partial aperture (50) sized to fit closely about a tubular member upon close of the ram- type blowout preventer (10); and a packer member (24) vertically interposed between the upper shutter assembly (20) and the lower shutter assembly (22), the packer member (24) being an elastomeric material (80) having a central semi-elliptical opening (82) sized to fit between the upper shutter assembly (20) and the lower shutter assembly (22) while fitting closely about the tubular member upon close of the ram-type blowout preventer (10).
2. The variable bore ram packer (18) as recited in claim 1, wherein the iris shutter subassembly (48) further comprises: a driver member (60) biasedly coupled by a coiled spring (62) to the ram-type blowout preventer (10), the driver member (60) having first and second slots (64, 66) therein; a first linkage member (68) housed within the rigid base plate (40), the first linkage member (68) having an outer connection surface (70) and an inner connection surface, the outer connection surface (70) moveably secured within the first slot (64), the inner connection surface coupled to a first rigid insert (44), the first rigid insert (44) being of the plurality of rigid inserts (42); a second linkage member (72) housed within the rigid base plate (40), the second linkage member (72) having an outer connection surface (74) and an inner connection surface, the outer connection surface (74) moveably secured within the second slot (66), the inner connection surface coupled to a second rigid insert (46), the second rigid insert (46) being of the plurality of rigid inserts (42); in response to a closing of the ram-type blowout preventer (10), the first linkage member (68) and the second linkage member (72) are radially separated such that the first rigid insert and the second rigid insert (46) move inward in forming the central partial aperture (50); and in response to an opening of the ram-type blowout preventer (10), the first linkage member (68) and the second linkage member (72) are radially gathered such that the first rigid insert (44) and the second rigid insert (46) move outward in forming the central partial aperture (50).
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3. The variable bore ram packer (18) as recited in claim 1, wherein the rigid base plate (40) comprises a high strength steel.
4. The variable bore ram packer (18) as recited in claim 1, wherein each of the plurality of rigid inserts (42) comprises a high strength steel.
5. The variable bore ram packer (18) as recited in claim 1, wherein the packer member (24) further comprises a high strength steel embedded within the elastomeric material (80).
6. A variable bore ram packer (18) for use in a ram- type blowout preventer (10) for oil and gas drilling operations, the variable bore ram packer (18) comprising: an upper shutter assembly (20) vertically spaced from a lower shutter assembly (22), each of the upper shutter assembly (20) and the lower shutter assembly (22) including a rigid base plate (40) having a plurality of rigid inserts (42) coupled thereto by an iris shutter subassembly (48), the plurality of rigid inserts (42) opening and closing via the iris shutter subassembly (48) as a mechanical iris diaphragm (116) having a central partial aperture (50) sized to fit closely about a tubular member upon close of the ram-type blowout preventer (10); the rigid base plate (40) being a high strength steel; each of the plurality of rigid inserts (42) being a high strength steel; a packer member (24) vertically interposed between the upper shutter assembly (20) and the lower shutter assembly (22), the packer member (24) being an elastomeric material (80) with a high strength steel embedded therein, the packer member (24) having a central semi-elliptical opening (82) sized to fit between the upper shutter assembly (20) and the lower shutter assembly (22) while fitting closely about the tubular member upon close of the ramtype blowout preventer (10).
7. A ram-type blowout preventer (10) for oil and gas drilling operations, the ramtype blowout preventer (10) comprising: a body (12); a first ram block (14) positioned within the body (12), the first ram block (14) having a plurality of recesses (16); a second ram block (14) positioned within the body (12) and opposing the first ram block (14); the second ram block (102) having a plurality of recesses (16); and each of the first ram block (14) and the second ram block (102) having a variable bore ram packer (18, 104) held in the plurality of recesses (16), each of the variable bore ram packers (18, 104) including: an upper shutter assembly (20) vertically spaced from a lower shutter assembly (22), each of the upper shutter assembly (20) and the lower shutter assembly (22) including a
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rigid base plate (40) having a plurality of rigid inserts (42) coupled thereto by an iris shutter subassembly (48), the plurality of rigid inserts (42) having a central partial aperture (50) sized to fit closely about a tubular member upon close of the ram- type blowout preventer (10); and a packer member (24) vertically interposed between the upper shutter assembly (20) and the lower shutter assembly (22), the packer member (24) being an elastomeric material (80) having a central semi-elliptical opening (82) sized to fit between the upper shutter assembly (20) and the lower shutter assembly (22) while fitting closely about the tubular member upon close of the ram-type blowout preventer (10).
8. The variable bore ram packer (18) as recited in claim 7, wherein the rigid base plate (40) comprises a high strength steel.
9. The variable bore ram packer (18) as recited in claim 7, wherein each of the plurality of rigid inserts (42) comprises a high strength steel.
10. The variable bore ram packer (18) as recited in claim 7, wherein the packer member (24) further comprises a high strength steel embedded within the elastomeric material (80).
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202063061149P | 2020-08-04 | 2020-08-04 | |
| US63/061,149 | 2020-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022031509A1 true WO2022031509A1 (en) | 2022-02-10 |
Family
ID=80117666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2021/043654 Ceased WO2022031509A1 (en) | 2020-08-04 | 2021-07-29 | Variable bore ram packer and ram-type blowout preventer using same |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2022031509A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893143A (en) * | 2022-07-14 | 2022-08-12 | 威海海洋职业学院 | Ocean oil well wellhead assembly |
| CN115199235A (en) * | 2022-07-15 | 2022-10-18 | 山东省煤田地质局第一勘探队 | Normally-sealed blowout preventer for drilling equipment and blowout prevention method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040079909A1 (en) * | 2002-10-23 | 2004-04-29 | Cooper Cameron Corporation | Side retainer plate for variable bore ram packer for a ram type blowout preventer |
| US20040164494A1 (en) * | 2003-02-20 | 2004-08-26 | Raul Araujo | BOP assembly with metal inserts |
| US20050006087A1 (en) * | 2003-07-11 | 2005-01-13 | Melancon Jeffrey T. | Variable bore ram |
| US20120227987A1 (en) * | 2011-03-09 | 2012-09-13 | National Oilwell Varco, L.P. | Method and apparatus for sealing a wellbore |
| WO2019226155A2 (en) * | 2018-05-22 | 2019-11-28 | Kinetic Pressure Control, Ltd. | Iris valve type well annular pressure control device and method |
-
2021
- 2021-07-29 WO PCT/US2021/043654 patent/WO2022031509A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040079909A1 (en) * | 2002-10-23 | 2004-04-29 | Cooper Cameron Corporation | Side retainer plate for variable bore ram packer for a ram type blowout preventer |
| US20040164494A1 (en) * | 2003-02-20 | 2004-08-26 | Raul Araujo | BOP assembly with metal inserts |
| US20050006087A1 (en) * | 2003-07-11 | 2005-01-13 | Melancon Jeffrey T. | Variable bore ram |
| US20120227987A1 (en) * | 2011-03-09 | 2012-09-13 | National Oilwell Varco, L.P. | Method and apparatus for sealing a wellbore |
| WO2019226155A2 (en) * | 2018-05-22 | 2019-11-28 | Kinetic Pressure Control, Ltd. | Iris valve type well annular pressure control device and method |
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| CN114893143B (en) * | 2022-07-14 | 2022-09-09 | 威海海洋职业学院 | Ocean oil well wellhead assembly |
| CN115199235A (en) * | 2022-07-15 | 2022-10-18 | 山东省煤田地质局第一勘探队 | Normally-sealed blowout preventer for drilling equipment and blowout prevention method |
| CN115199235B (en) * | 2022-07-15 | 2023-09-29 | 山东省煤田地质局第一勘探队 | Normally-closed blowout preventer for drilling equipment and blowout prevention method |
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