摘要:
The lifting wires are provided with a reinforcement within the pressing zone to rigidify the wires while the hook-containing zones remain bendable. The reinforcement is in the form of webs secured to the wires, widened portions of the wires, or a bowed member secured to the pressing member, i.e. jacquard needle, and pivotally articulated at the ends of the lifting wire.
摘要:
A coiled tubing connection system is used in a well. A connector having an engagement end is used to couple a wellbore device to the end of a coiled tubing. The connector is spoolable, and the engagement end comprises engagement features that facilitate formation of a connection that is dependable and less susceptible to separation.
摘要:
The current application discloses coiled tubing assemblies and methods of connecting coiled tubing with downhole devices. In an exemplary embodiment, the assembly comprises a coiled tubing, a downhole device for performing an operation in a subterranean wellbore, a connector that mechanically connects the coiled tubing to the downhole device; and a sealing device that seals the connection between the coiled tubing and the connector. The sealing device is substantially free of axial tensions caused by a weight of the downhole device.
摘要:
A fluid injection system is used in a well. Fluid stages are arranged in repeating series within a tubing of the fluid injection system to facilitate control over effects of injection. A sensor system can be used to detect one or more parameters related to the fluids moved downhole through the tubing to further enhance injection procedures.
摘要:
Apparatus and methods for terminating and anchoring fiber optic connections are disclosed. One apparatus includes a sealed body enclosing a passage for one or more optical fibers terminating in connections proximate a first end of the sealed body, the sealed body having a diameter less than an internal diameter of an oilfield tubular, the sealed body having a second end adapted to sealingly engage and anchor an end of a fiber optic carrier conduit, the second end connecting the sealed body to the fiber optic carrier conduit.
摘要:
Apparatus and methods for selectively and safely reversing flow in coiled tubing used for wellbore cleanouts are disclosed. One apparatus includes a section of coiled tubing having a main flow channel, at least two flow-preventing valves in the section of coiled tubing, each adapted to close the main flow channel upon attempted flow reversal; and at least one actuator adapted to deter closing of the flow-preventing valves. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.
摘要:
An arrangement comprises heald frames, linear drives and coupling apparatus that are collected together in groups. The linear drives of each group are arranged in a staggered fashion and form a drive unit. The coupling apparatus are executed in such a manner that the staggering within a group can be selected. With this arrangement an ideal ratio of drive power to required space is achieved. In addition, the elements forming a group are interchangeable.
摘要:
The heddle frame carrier has a horizontal beam interconnecting two vertical arms each of which has a reduced zone operative as a pivot joint. For heddle frame changing, the arms can be hinged apart from one another with the locking members at the upper ends pulled away outwardly from the top beam of the heddle frame. Shaft retaining elements are therefore provided which provide secure and reliable retention of the heddle frame without clamping forces being exerted thereon and which enable heddle frame changing to be carried out very rapidly without the use of any tool.
摘要:
The jacquard needles are moved lengthwise via a reciprocable drive element and a selector in order to selectively press the lifting wires in a pressing direction. Each needle carries a force accumulator, such as a coiled spring, which abuts against the drive element and allows the drive element to move in the pressing direction when a given needle is not to be moved. Each needle is also locked to the drive element to move with the drive element in a direction opposite the pressing direction.
摘要:
The griffes are provided with projecting means on two sides in order to guide the drive nebs on the lifting hooks during shifting of the lifting hooks. The two means are of different length with one acting as a pressing ledge to guide a lifting hook onto a neb of an adjacent griffe while the other acts as a guide ledge to block movement of a lifting hook onto an adjacent griffe.