摘要:
A liner running system for placing a liner in a well bore comprises a latch sleeve connected to the liner and a running tool releasably attached to the latch sleeve. The latch sleeve has a wall thickness substantially the same as the wall thickness of the liner, and the running tool has an outer diameter less than or equal to the inner diameter of the liner. The latch sleeve may be connected into the liner at any location along its length. The running tool is releasable from the latch sleeve via hydraulic actuation or mechanical actuation. Optionally, a swivel may be connected to the liner. The swivel has a wall thickness substantially the same as the wall thickness of the liner. The method for lowering the liner into the well bore via the liner running system comprises rotating the liner, pushing the liner, pulling the liner, or a combination thereof.
摘要:
An expandable downhole anchoring tool positionable within a wellbore for use in cooperation with drilling equipment comprises a body including a plurality of angled channels formed into a wall thereof, and a plurality of moveable slips disposed in the same radial plane around the body, wherein the plurality of moveable slips are hydraulically translatable along the plurality of angled channels between a collapsed position and an expanded position. A method of setting an expandable anchor within a wellbore comprises running the anchor into the wellbore in a collapsed position, and expanding the anchor into gripping engagement with the wellbore, wherein the anchor is adapted to expand up to at least 1.5 times a collapsed diameter of the anchor.
摘要:
A downhole assembly comprises a whipstock and an expandable anchoring tool connected to the whipstock, wherein the tool comprises a body including a plurality of angled channels formed into a wall thereof and a plurality of moveable slips, wherein the slips translate along the angled channels between a collapsed position and an expanded position. A method for performing a thru tubing operation in a well bore comprises running a downhole assembly comprising a whipstock and an expandable anchoring tool in a collapsed position through a first diameter section of the well bore, orienting the whipstock, and translating a plurality of pairs of slips of the expandable anchoring tool to an expanded position into gripping engagement with a casing lining a second diameter section of the well bore that is larger than the first diameter section, wherein the pairs of slips are axially spaced apart along the expandable anchoring tool.
摘要:
An expandable drilling apparatus is deployed upon a distal end of a drillstring and includes a cutting head and a substantially tubular main body adjacent the cutting head providing a plurality of axial recesses configured to receive arm assemblies configured to translate between a retracted and an extended position. A flow switch actuates the arm assemblies when a drilling fluid pressure exceeds an activation value and the drilling apparatus includes a biasing member to reset the arm assemblies when the drilling fluid pressure falls below a reset value.
摘要:
A method of milling a window through a casing in a primary well bore and drilling an enlarged sidetracked well bore comprises running into the primary well bore a drilling assembly comprising at least one cutting apparatus adapted to drill an enlarged borehole, milling a window through the casing, and drilling the enlarged sidetracked well bore, wherein the milling and drilling steps are performed in one trip into the primary well bore. A drilling assembly comprises at least one cutting apparatus operable to drill an enlarged borehole, wherein the drilling assembly is operable to mill a window through a casing in a primary well bore and drill an enlarged sidetracked well bore through the window in one trip into the primary well bore.
摘要:
The present invention provides for a method for dosing an urea-based reducing agent into a exhaust gas stream generated from a combustion engine and addressed to an aftertreatment system, e.g. SCR or SCRT system. According to the method of the invention the gas exhaust stream is conveyed into a dosing housing which develops along a longitudinal axis. In particular the gas is conveyed by generating an annular inlet jet inclined with respect of said axis. The urea-based reducing agent is injected by generating, inside the housing, an urea-based reducing agent spray which is preferably coaxial to said axis of the housing.
摘要:
A quiescent melt handling system includes a melting furnace and a holding furnace communicating with the melting furnace for holding a molten metal melt. The holding furnace has a relatively large surface area and a relatively shallow depth, having a width to depth ratio in the range of 4-100 to 1. Also provided is structure in the holding furnace for separating inclusions from the melt in the holding furnace. A mold communicates with the holding furnace. A counter gravity casting system, which might comprise a vacuum assisted casting system, draws the melt into the mold.
摘要:
The present invention provides for a method for dosing an urea-based reducing agent into a exhaust gas stream generated from a combustion engine and addressed to an aftertreatment system, e.g. SCR or SCRT system. According to the method of the invention the gas exhaust stream is conveyed into a dosing housing which develops along a longitudinal axis. In particular the gas is conveyed by generating an annular inlet jet inclined with respect of said axis. The urea-based reducing agent is injected by generating, inside the housing, an urea-based reducing agent spray which is preferably coaxial to said axis of the housing.
摘要:
A solvent extraction composition comprising one or more orthohydroxyarylaldoximes and/or one or more orthohydroxyarylketoximes, and one or more selectivity modifiers consisting of phosphinic and/or phosphonic acids, and salts and esters therefore and optionally one or more equilibrium modifiers is provided.
摘要:
A spreadsheet application associates data obtained from a captured image with a spreadsheet. For example, one or more images of physical data may be captured and translated into electronic data that is automatically associated with one or more spreadsheets. The formatting and underlying formulas of the data included within the captured image may be represented within a spreadsheet (e.g. highlighted data remains highlighted within the electronic spreadsheet). The data may also be compared with existing electronic data. For example, differences between the data in the captured image with the data in an existing spreadsheet may be used to update the existing spreadsheet. A display of a captured image may be also be augmented using data that is obtained from the captured image. For example, a chart may be created and displayed using data that is obtained from the captured image.