Class / Patent application number | Description | Number of patent applications / Date published |
166880100 | Inner member anchor or seal with lateral port | 19 |
20100116486 | WELL ASSEMBLY HAVING A CASING HANGER SUPPORTED BY A LOAD MEMBER ACTUATED BY A RETRACTABLE MEMBER DISPOSED IN THE WELLHEAD - A wellhead system comprising a high pressure housing having a retractable ring and a casing hanger having an activation ring configured to be engaged by the retractable ring when the casing hanger is lowered into the high pressure housing. An expandable load member is carried by the casing hanger into the high pressure housing. When the activation ring is engaged by the retractable ring, the activation ring is blocked from further downward motion. The activation ring and the body of the casing hanger cooperate with the load member to expand the load member outward into engagement with the high pressure housing as the casing hanger is lowered further into the high pressure housing. The outer surface of the load member and the inner surface of the high pressure housing are configured so that the high pressure housing supports the casing hanger when the load member is expanded into engagement with the high pressure housing. | 05-13-2010 |
20100181063 | MULTI-LOCK ADAPTERS FOR INDEPENDENT SCREWED WELLHEADS AND METHODS OF USING SAME - A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications. | 07-22-2010 |
20100218939 | HYBRID WELLHEAD SYSTEM AND METHOD OF USE - A hybrid wellhead system is assembled using a plurality of threaded unions, such as spanner nuts or hammer unions, for securing respective tubular heads and a flanged connection for securing a flow control stack to a top of a tubing head spool. The tubing head spool is secured by a threaded union to an intermediate head spool. The intermediate head spool is secured by another threaded union to a wellhead. Each tubular head secures and suspends a tubular string in the well bore. The hybrid wellhead system is capable of withstanding higher fluid pressures than a conventional independent screwed wellhead, while providing a more economical alternative to a flanged, or ranged, wellhead system because it is less expensive to construct and faster to assemble. | 09-02-2010 |
20110198074 | HYBRID WELLHEAD SYSTEM AND METHOD OF USE - A hybrid wellhead system for a hydrocarbon well, having a wellhead supported by a conductor; an intermediate head spool secured to the wellhead by a hammer union; and a tubing head spool secured to the intermediate head spool by a hammer union. | 08-18-2011 |
20110226467 | WELL ASSEMBLY WITH A COMPOSITE FIBER SLEEVE FOR AN OPENING - Assemblies that can be disposed in a subterranean bore are described. An assembly can include a body with an opening in a wall of the body. A sleeve can be disposed exterior to the body at the opening. The sleeve can be made from material such as carbon fiber that can withstand at least some pressures and forces present in the subterranean environment and reduce a diameter of the body and sleeve. The assembly may also include an inner sleeve and/or an inner string that can isolate the sleeve from certain pressures and forces. | 09-22-2011 |
20120285676 | PRESSURE ENERGIZED INTERFERENCE FIT SEAL - A seal assembly for use between wellbore tubulars employs an inner seal ring partially circumscribed by an outer seal ring. The seal rings are axially slidable with respect to one another and can be made from pliable inelastic materials such as graphite or a fluoropolymer. The seal rings contact one another along profiled surfaces that are angled such that by axially urging the seal rings towards one another produces a bulge in the seal assembly directed radially outwards and inwards. The bulging seal rings come into contact with opposing sides of the wellbore tubulars to define a sealing surface. Axial supports at opposing lateral ends of the seal rings maintain the seal between the tubulars. | 11-15-2012 |
20130056196 | Trapped Pressure Compensator - A hanger seal system includes a first seal and a second seal disposed between a hanger and a hanger housing, creating a fixed-volume annular region filled with a first fluid; and a trapped pressure compensator (TPC) disposed in the annular region and filled with a second fluid. The TPC is collapsible from an initial position to a collapsed position in response to a pressure being applied to the outside of the TPC exceeding a predetermined amount. Additionally, the TPC occupies an initial volume in the initial position and a reduced volume in the collapsed position and a fluid pressure in the annular region exceeding the predetermined amount causes the TPC to move from the initial position to the collapsed position. This causes an increase in volume of the annular region such that the fluid pressure in the annular region is below the predetermined amount when the TPC is in the collapsed position. | 03-07-2013 |
20140060810 | SYSTEMS, METHODS, AND DEVICES FOR ISOLATING PORTIONS OF A WELLHEAD FROM FLUID PRESSURE - A wellhead system is provided. In one embodiment, the wellhead system includes a bypass sleeve for temporarily isolating portions of a wellhead assembly from pressurized fracing fluid. The bypass sleeve may include a generally tubular body having a tool interface, a lock ring disposed at least partially around the body, and an anti-rotation device coupled to the body. In some embodiments, the anti-rotation device includes a resilient member disposed in a cavity in the body, and an anti-rotation member biased away from the body by the resilient member. The anti-rotation member of some embodiments extends radially outward from the body. | 03-06-2014 |
20140367082 | DIVERTER FLOW LINE INSERT PACKER SEAL - A diverter for redirecting drilling fluid in oilfield applications includes a support housing and a diverter body disposed therein. A lateral opening defined in the diverter body permits fluid communication between an interior passage of the diverter body and a lateral now outlet defined by the support housing. A pair of flow-line seals disposed radially between the support housing and the diverter body includes a flow-line seal disposed on axially upper and lower sides of the lateral flow outlet. The flow-line seals include a pair of substantially rigid support rings and first and second sealing bodies adhered thereto. The first sealing body is affixed to an inner diameter wall of the first and second support rings and extends to axially upper and lower walls of the support rings. The second sealing body is bonded axially between the support rings. | 12-18-2014 |
166890100 | Plural inner pipes | 3 |
20090294118 | METHOD AND APPARATUS FOR USE IN A WELLBORE - An improved hanger assembly and method for its use is described herein, along with various examples of alternative constructions for the hangar assembly. Also described are examples of new tool strings having improved capabilities that are facilitated as a result of use of the described hanger assemblies. The described hanger includes a deformable section having improved engagement capabilities. In preferred examples, these improved engagement capabilities are achieved by use of a first deformable section of the hanger that extends radially outwardly from the remainder of the hangar body, when the hanger is set; and a contact member that is further urged radially outwardly relative to that deformable section when the hanger is set. | 12-03-2009 |
166890200 | Parallel pipes (as opposed to concentric) | 2 |
20090038790 | Downhole tool with slip elements having a friction surface - Slip segments with a friction medium are used to anchor a downhole tool in a well. Each slip segment has a slip segment body made of a drillable material. A friction medium is applied to the outer surface of the slip segment body so that the outer surface of the slip segment has an increased holding capability in the well. | 02-12-2009 |
20140020888 | INDEPENDENT GUIDE STRING HANGER - A system, in certain embodiments, includes a casing head and a tubing hanger disposed within the casing head and supported by a first retaining feature of the casing head. The tubing hanger is configured to support a tubing string. The system also includes a guide string hanger disposed within the casing head and supported by a second retaining feature of the casing head independent of the first retaining feature. The guide string hanger is configured to support a guide string. | 01-23-2014 |
166880200 | Slip type well anchor | 5 |
20110284208 | APPARATUS AND METHOD FOR SETTING A DOWNHOLE ANCHOR AND RELATED TELESCOPIC JOINT - A lock ring for use as a one way movement restrictor between two telescopingly arranged tubulars to permit movement in one direction and prevent movement in the other direction of one tubular relative to the other tubular is described. The lock ring comprised: a profile having one or more formations formed on the outer circumference for engagement with a suitable formation profile formed on the inner circumference of the outer telescopic tubular; and one or more teeth formed on its inner circumference, the teeth being adapted to dig into the outer surface of the inner telescopic member. An apparatus and a method for setting a downhole anchor is also disclosed. | 11-24-2011 |
20120012303 | Retrievable Tool with Ratchet Lock Feature - A releasable locking system for a subterranean tool uses a split housing for a body lock ring that in one mode is retained for its normal locking function by a setting sleeve. The setting sleeve holds the potential energy in the housing that would otherwise cause the housing to grow radially and away from a locking function. The locking is defeated as a surrounding setting sleeve with a recess is moved to juxtapose the recess with the segmented housing allowing the housing to spring into the recess and away from lock ring engagement that previously maintained the locked position. The tool can be released and removed to a surface location. | 01-19-2012 |
20120080182 | Fill Up and Circulating Tool with Well Control Feature - A high-pressure casing fill-up and circulating assembly and method of use is disclosed. The fill and circulating assembly, when inserted into the uppermost portion of the casing, will allow the casing to be filled while each section of casing is added. In one configuration there can be a cup type seal that seals in the casing simply by inserting the circulator into the casing. In yet another configuration the casing circulator portion can be anchored in the casing by manipulating the setting apparatus of the circulator thus anchoring the circulator to the casing and a settable seal unit will be energized to seal between the casing and the circulator. | 04-05-2012 |
20130299160 | WELLBORE ANCHORING SYSTEM - A hydraulic wellbore anchoring system for use with whipstocks or other tools in either cased or open hole wellbores. The anchoring system includes an upper slip system and a lower slip system. The anchor system may be set using hydraulic pressure and withdrawn by a predetermined upward force. While the slips of the upper and lower slip systems may be set substantially simultaneously, the anchoring system enables sequential disengagement of the slips to reduce the force required for withdrawal. | 11-14-2013 |
166880300 | Seal actuated with anchor | 1 |
20140069632 | Load Enhanced Locking Arrangement - In a wellhead near the top of an oil and gas well, a locking profile configured for locking engagement with an inner well member and including a locking ridge having a rib and a locking shoulder. The locking ridge extends radially inward from an inner surface of the wellhead into a well bore. The rib is located on an end of the ridge distal from the wellhead and protrudes into the inner well member. The locking shoulder is located on an end of the ridge distal from the wellhead and adjacent a lower end of the rib, so that as the inner well member exerts an upward force on the rib, the upward force creates a moment in the locking ridge that pushes the locking shoulder into tighter engagement with the inner well member. | 03-13-2014 |
166880400 | With hydraulic conduit or line extending through outer member | 2 |
20100206545 | SYSTEM AND METHOD TO SEAL MULTIPLE CONTROL LINES - A system in some embodiments includes sealing system including an energizing member that simultaneously seats a plurality of sealing elements about a plurality of control lines, respectively. Further embodiments provide a method including disposing a plurality of sealing elements about a plurality of control lines, respectively, and fastening an energizing member to simultaneously seat each of the sealing elements. | 08-19-2010 |
20160060997 | FRAC HEAD APPARATUS - A frac head apparatus has a body with an internal bore extending therethrough, a first flow bore formed through the body so as to have an inner end opening to the internal bore of the body and an outer end opening to an outer side of the body, and a second flow bore formed through the body so as to have an inner end opening to the internal bore of the body and an outer end opening at an outer side of the body. The inner end of the first and second flow bores are positioned at different levels within the body. Each of the first and second flow bores has a longitudinal axis offset from and not intersecting a longitudinal axis of the internal bore of the body such that a fluid flow through the flow bores is directed toward a wall of the internal bore offset from an opposite side of the wall of the internal bore from the inner ends of the flow bores. | 03-03-2016 |