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US 11,530,593 B1Granted
Stripper head system and method of use
OwnerHarvey Mueller, Jeremy Kneeseinventors
Life of this patent
Estimating the term…
Abstract
A stripper head assembly for holding back pressure while stripping a work-string from pressurized well environment is disclosed. The stripper head assembly comprises a stripper head, a stripper insert, a stripper rubber, one or more retention bushing assemblies, one or more retention pins, and one or more retention apertures. The stripper head comprises an outer portion of the stripper head assembly. The stripper head comprises, from top to bottom, a top portion, a body portion, a lower neck portion and a flange base. A portion of the stripper insert fits within a portion of the stripper rubber. A portion of the stripper rubber fits within a portion of the stripper head.
Claims20
A stripper head assembly for holding back pressure while stripping a work-string in and out of a pressurized well environment, wherein:
- said stripper head assembly comprises a stripper head, a stripper insert, a stripper rubber, one or more retention bushing assemblies, one or more retention pins, and one or more retention apertures;
- said stripper head comprises an outer portion of said stripper head assembly;
- said stripper head comprises, from top to bottom, a top portion, a body portion, a lower neck portion and a flange base;
- a portion of said stripper insert fits within a portion of said stripper rubber;
- a portion of said stripper rubber fits within a portion of said stripper head;
- a portion of one or more bolts attach said flange base of said stripper head assembly equipment attached to a well head at said pressurized well environment, such as a blow-out preventer;
- said stripper rubber comprises a rubber material;
- each among said one or more retention bushing assemblies are configured to seal a retention pin cavity within said one or more retention apertures and around a portion of said one or more retention pins;
- said one or more retention pins are configured to hold said stripper head assembly in place relative to said work-string;
- each among said one or more retention bushing assemblies comprises one or more retention bushings, one or more grease ports, and a bleeder hole;
- said bleeder hole allows a portion of a lubricant within said retention pin cavity to selectively escape at a given pressure;
- said one or more grease ports are configured to selectively receive said lubricant into said retention pin cavity;
- each among said one or more retention bushings comprises a ring comprising an interior O-ring groove, an exterior O-ring groove, a center aperture, a grease aperture, and said bleeder hole;
- said interior O-ring groove and said exterior O-ring groove is configured to each be configured to contain a second O-ring and a third O-ring;
- said second O-ring is configured to seat into said exterior O-ring groove and create a seal between said one or more retention bushing assemblies and a portion of said stripper head;
- and
- said third O-ring is configured to seat into said interior O-ring groove and create a seal between said one or more retention bushing assemblies and a portion of said one or more retention pins.
14 more elements
A stripper head assembly for holding back pressure while stripping a work-string in and out of a pressurized well environment, wherein:
- said stripper head assembly comprises a stripper head, a stripper insert, a stripper rubber, one or more retention bushing assemblies, one or more retention pins, and one or more retention apertures;
- said stripper head comprises an outer portion of said stripper head assembly;
- said stripper head comprises, from top to bottom, a top portion, a body portion, a lower neck portion and a flange base;
- a portion of said stripper insert fits within a portion of said stripper rubber;
- a portion of said stripper rubber fits within a portion of said stripper head;
- a portion of one or more bolts attach said flange base of said stripper head assembly equipment attached to a well head at said pressurized well environment, such as a blow-out preventer;
- said stripper rubber comprises a rubber material;
- each among said one or more retention bushing assemblies are configured to seal a retention pin cavity within said one or more retention apertures and around a portion of said one or more retention pins;
- said one or more retention pins are configured to hold said stripper head assembly in place relative to said work-string;
- each among said one or more retention bushing assemblies comprises one or more retention bushings, one or more grease ports, and a bleeder hole;
- said bleeder hole allows a portion of a lubricant within said retention pin cavity to selectively escape at a given pressure;
- and
- said one or more grease ports are configured to selectively receive said lubricant into said retention pin cavity.
10 more elements
The stripper head assembly of claim/wherein:
- said stripper insert is molded into said stripper rubber and bonded together through an injected rubber molding process.
A stripper head assembly for holding back pressure while stripping a work-string in and out of a pressurized well environment, wherein:
- said stripper head assembly comprises a stripper head, a stripper insert, a stripper rubber, one or more retention bushing assemblies, one or more retention pins, and one or more retention apertures;
- said stripper head comprises an outer portion of said stripper head assembly;
- said stripper head comprises, from top to bottom, a top portion, a body portion, a lower neck portion and a flange base;
- a portion of said stripper insert fits within a portion of said stripper rubber;
- a portion of said stripper rubber fits within a portion of said stripper head;
- a portion of one or more bolts attach said flange base of said stripper head assembly equipment attached to a well head at said pressurized well environment, such as a blow-out preventer;
- said stripper rubber comprises a rubber material;
- each among said one or more retention bushing assemblies are configured to seal a retention pin cavity within said one or more retention apertures and around a portion of said one or more retention pins;
- each among said one or more retention bushing assemblies comprise said one or more grease ports;
- each said one or more retention apertures comprise said retention pin cavity;
- said retention pin cavity comprises a cavity between portions of said one or more retention apertures and said one or more retention pins;
- said one or more grease ports are configured to receive said lubricant;
- said lubricant is inserted into said retention pin cavity through said one or more grease ports;
- and
- said lubricant is configured to lubricate parts of said one or more retention apertures and said one or more retention pins are protected from friction and heat.
12 more elements
A stripper head assembly for holding back pressure while stripping a work-string in and out of a pressurized well environment, wherein:
- said stripper head assembly comprises a stripper head, a stripper insert, a stripper rubber, one or more retention bushing assemblies, one or more retention pins, and one or more retention apertures;
- said stripper head comprises an outer portion of said stripper head assembly;
- said stripper head comprises, from top to bottom, a top portion, a body portion, a lower neck portion and a flange base;
- a portion of said stripper insert fits within a portion of said stripper rubber;
- a portion of said stripper rubber fits within a portion of said stripper head;
- a portion of one or more bolts attach said flange base of said stripper head assembly equipment attached to a well head at said pressurized well environment, such as a blow-out preventer;
- said stripper rubber comprises a rubber material;
- each among said one or more retention bushing assemblies are configured to seal a retention pin cavity within said one or more retention apertures and around a portion of said one or more retention pins;
- said stripper rubber comprises a form fitting element for use within said stripper head assembly;
- said stripper rubber comprises a lower aperture and an upper aperture at either end of a center aperture;
- said stripper rubber comprises an inner surface around an interior space comprising said center aperture;
- said stripper rubber comprises a collar portion attaching to an upper mid portion;
- said upper mid portion comprises a substantially cylindrical hollow element for selectively being held within an inner sidewall of said stripper insert;
- a lower portions of said upper mid portion extend down toward said lower aperture and forming a multi-stage loading zones;
- and
- said multi-stage loading zones are configured to directing pressures to enhance the seal of said stripper rubber within said stripper head assembly.
13 more elements
Dependencies are inferred from the claim text.