摘要:
A packer installation system includes a pipe, a packer that is secured to the pipe at a first axial position along the pipe, and a brush assembly that is secured to the pipe at a second axial position. The brush assembly includes brushes that are adjustable between a first configuration in which the brushes extend radially from the pipe by a first distance and a second configuration in which the brushes extend radially from the pipe by a second distance that is greater than the first distance.
摘要:
A system to clean well casing in a downhole well operation. The system comprises an inner collar having flow ports and an out collar having jet ports in fluid communication with the flow ports. The inner collar couples with a section of a tool string and the outer collar rotates about the inner collar in response to fluid flow through the tool string. The inner collar can include a sleeve. The sleeve can be moved from a first position to a second position causing the jet ports to be in fluid communication with the flow ports. The inner collar remains relatively stationary with respect to the rotation of the outer collar. In addition, the jet ports are angled in a way that a portion of force generated by the fluid flow through the jet ports induce rotation of the outer collar in the opposite direction of the fluid flow.
摘要:
There is described an apparatus device (1) for mechanically loosening scale (6) inside a pipe (2) arranged to convey hydrocarbon fluids from a production zone (3) in a well, in which an actuator (12) arranged in a housing (11) includes an axially movable stem (121) which extends through at least part of the housing (11) and is provided with at least one cam (122), at least one cutting means (13) is arranged radially movable in a recess (111) in the housing (11), the cam (122) bearing, by the axial movement of the actuator (12) towards a first extreme position, against the cutting means (13), applying to it a push force directed radially outwards. There is also described a method of mechanically loosening scale (6) inside a pipe (2) arranged to convey hydrocarbon fluids from a production zone (3) by using the apparatus (1).
摘要:
Downhole cleaning apparatus in the form of a casing scraper (10) comprises body (12) and cleaning members (22) mounted on the body. The cleaning members (22) are selectively movable from a retracted configuration to an extended cleaning configuration. The casing scraper (10) may be mounted on a drill string above a drill bit.
摘要:
Methods of detecting binding of a putative ligand to a C-enriched target molecule, methods of screening for compounds which bind to a C-enriched target molecule, methods for calculating the dissociation constant of a ligand compound which binds to a C-enriched target molecule, and methods employed in the determination of the specific amino acids in a C-enriched target molecule affected by the binding of a ligand, as well as compounds identified by these screening methods, are provided herewith.
摘要:
Circulation unit (2) for connecting to a lubricator (160), said lubricator (160) is suitable for housing a wireline operated tool string (200) for collecting debris within a petroleum well, said circulation unit (2) comprises a house (29) provided with an upper lubricator connection (165) and with at least one lower internal seal member (23), said seal member (23) is adapted to seal against an outer surface of the tool string (200), and the circulation unit (2) is provided with an outlet (30) above the seal member (23), said outlet (30) being connected to a reservoir (3; 300). The circulation unit (2) is provided with a lower lubricator connection (166);the house (29), the upper lubricator connection (165) and the lower lubricator connection (166) form a through passage for the tool string (200); and the upper lubrication connection (165) and the lower lubrication connection (166) are adapted for connection to a pressurized lubricator (160). The tool string (200) comprises a wellbore clean out tool (230) provided with filling means and said wellbore clean out tool (230) comprises an outlet (4) for unload-ing collected debris in a lubricator assembly (16) comprising the lubricator (160) and the circulation unit (2). A method for unloading the filled wellbore clean out tool (230) in the circulation unit (2) is described as well.
摘要:
An apparatus for cleaning an inner surface of a marine riser (62) or a production riser (62), having an inside diameter in a range from 16 inches (40 cm) to 20 inches (51 cm), has a mandrel (16) and at least one brush member (12) and at least one centralizer (14) mounted on the mandrel (16). The brush member (12) has an outside diameter adapted to operate inside the riser (62) with sufficient contact to clean the inner surface thereof. The centralizer (14) has at least two adjustable positioning members (24) protruding from its outer circumference, which cooperate to each contact the inside surface of the riser (62), thereby positioning the mandrel (16) substantially coaxial with a longitudinal axis of the riser (62). A drive fluid causes the brush member (12) to oscillate and propel the apparatus along the length of the riser (62). A method for removing debris from a marine riser (62) or a production riser (62) uses the apparatus of the present invention.
摘要:
Die Erfindung betrifft einen Hydrokavitationsgenerator mit einem röhrenartigen an zwei Seiten offenen Körper, einem Konfusor und einem Diffusor, wobei der Kanal innerhalb des Körpers zwei Stufen mit verschiedenen Querschnitten aufweist, wobei der Konfusor mit einer Spitze koaxial in die erste Stufe [Eingangsstufe] des Körpers eingeführt und darin befestigt ist und wobei der Diffusor von der entgegengesetzten Seite des Körpers eingeführt und darin befestigt ist. Um die Konstruktion des Hydro- kavitationsgenerators zu vereinfachen und die Wirkung der Kavitationskraft zu erhö- hen, sieht die Erfindung vor, dass der Körper und der Diffusor auf ihren Außenseiten über Schweißansätze aneinander anliegen und miteinander verschweißt sind und dass das Verhältnis des kleinsten Durchmessers des Kanals des Diffusors am Ein¬ gang des Diffusors zum Durchmesser des Kanals des Konfusors am Ausgang des Konfusors mit gleich 2 gewählt ist.
摘要:
Improved darts and methods of using these darts in subterranean wells are disclosed. The improved dart comprises a foam portion and a rubber portion coupled to the foam portion. A dart nose is coupled to at least one of the foam portion and the rubber portion. The foam portion and the rubber portion are configured to interface with an inner surface of at least one of a well bore wall, a pipe, and a casing string.
摘要:
One or more brush bodies (20) fabricated from an incompressible material, for example, from high density polyurethane, high density polyethylene, high density polypropylene, nylon, Orlon, high density plastics, phenolic resin-based materials hard rubber, wood, aluminum, or other easily drillable metals, are connected to, or integrally fabricated with one or more elastomeric, conventional cement plugs (30), and are pumped down within the interior of oilfield casing (76) situated within an earth borehole, to minimize or eliminate the need to run a workstring of drillpipe and drill bit to clean out the interior of the string of casing (76).