摘要:
A networked information management system and architecture for managing files and documents pertaining to oil and gas wells and properties. On request by an authenticated user, a client workstation displays geographical information system (GIS) layers, via a web collaboration portal, for a region of the earth at which wells or properties may be located. The wells or properties within the displayed region enable links to documents or files associated with those wells and properties, and by way of which the system user can access the documents and files. Both structured and unstructured data elements can be accessed by the system. A collaboration portal allows for standardized access to the data, and also for simultaneous or collaborative access to the data. Workflow management capability is also implemented.
摘要:
A system for tethering a subsea wellhead 50 including a plurality of anchors 110 disposed about the subsea BOP 41 and secured to the sea floor 12. In addition, the system includes a plurality of tensioning systems 140. One tensioning system 140 is coupled to an upper end of each anchor 110. Further, a plurality of flexible tension members 160. Each tension member 160 extends from a first end coupled to the subsea wellhead 50 to a second end coupled to one of the tensioning systems 140. Each tensioning system 140 is configured to apply a tensile preload to one of the tension members 160.
摘要:
A system for performing an intervention on a subsea wellhead (20), the system including a production tree (110) having a central axis, a first end, a second end, and a first flow bore extending axially from the first end to the second end. The production tree includes a master valve (131) disposed along the first flow bore, a swab valve (130) disposed along the first How bore between the master valve and the first end, and a shearing device (133) disposed along the first How bore between the master valve and the second end. The second end of the production tree comprises a connector (114) configured to releasably couple to the subsea wellhead, and the shearing device is configured to shear a component extending through the first flow bore.
摘要:
Biofuel generated from the lipids of oleaginous yeast must conform to industry and regulatory standards for fuel performance and composition. In particular, precise lipid compositions and fuel properties are required for approval of biofuels. Disclosed are genetically modified microorganisms generated from oleaginous yeast that show significant alterations in lipid profile. Also disclosed are methods of producing biofuels and biofuel compositions.
摘要:
A system for recovering hydrocarbons from a subterranean formation with steam-assisted gravity drainage comprises a subterranean access tunnel extending through the formation. In addition, the system comprises a steam injection well extending through the formation above a portion of the tunnel. Further, the system comprises a production well extending through the formation above the portion of the tunnel. Still further, the system comprises a plurality of horizontally spaced bores extending upward from the access tunnel through the formation.
摘要:
The present disclosure relates to variant &bgr;-glucosidase polypeptides that have enhanced thermostability, and compositions, e.g., cellulase compositions, comprising variant &bgr;-glucosidase polypeptides. The variant &bgr;-glucosidase polypeptides and related compositions can be used in variety of agricultural and industrial applications. The present disclosure further relates to nucleic acids encoding variant &bgr;-glucosidase polypeptides and host cells that recombinantly express the variant &bgr;-glucosidase polypeptides.
摘要:
Methods and systems for operating a valve control system to control a valve in a wellbore include identifying a differential pressure arrangement of a plurality of differential pressure arrangements for actuating the valve to a desired state based on a differential pressure of at least two pressure sources of the wellbore and a present state of the valve. Once identified, the differential pressure arrangement of the at least two pressure sources are utilized to initiate actuation of the valve from the present state to the desired state.
摘要:
A pressure relief valve (10) for use submerged in a body of water includes a first seal element (30) in a water-filled chamber (44) having an outlet (45) into the body of water. In addition, the pressure relief valve comprises a spring (22) in a water-filled chamber biasing the first seal element into sealing engagement with a second seal element (12) and forming a seal until the pressure opposing the seal equals or exceeds a predetermined pressure.
摘要:
A real-time drilling monitor (RTDM) workstation provides real-time information at a well-site. The workstation may include a display and a processor coupled to the display. The processor receives sensor signals from a plurality of sensors and generates a single graphical user interface (GUI) populated with dynamically generated parameters based on the sensor signals, as well as static information and dynamically updated uncertainty assessments.
摘要:
A tool for removing a first flange (201) from a second flange (202) comprises a housing (110) having a central axis, a first end (120), and an open second end (130) opposite the first end. The housing also includes a first access port (138) extending radially therethrough. In addition, the tool comprises an annular basket grapple (160) coaxially disposed within the second end (130) of the housing and configured to coaxially receive and engage a first flange (201). The basket grapple has a first end, a second end opposite the first end, and a cutout (164) extending radially therethrough. The outer surface of the basket grapple includes external threads (163) that engage mating internal threads (134) on the inner surface of the housing (110). Further, the tool comprises a key (193) releasably coupled to the housing (110). The key (193) is configured to selectively prevent relative rotation between the basket grapple (160) and the housing (110).