摘要:
A well tool including swellable material and integrated fluid for initiating swelling. A well tool includes a swellable material and a reservoir for containing a fluid of a type which causes the swellable material to swell. A method of swelling a swellable material included in a well tool includes the steps of: positioning the well tool in a well; and then activating a fluid to cause swelling of the swellable material. A method of swelling a swellable material includes the steps of: providing the swellable material which is capable of swelling when contacted by a fluid; positioning the swellable material in an environment in which the swellable material is contacted by another fluid which does not cause the material to swell; and swelling the swellable material by contacting the swellable material with the first fluid while the swellable material remains in contact with the other fluid.
摘要:
A well tool including swellable material and integrated fluid for initiating swelling. A well tool includes a swellable material and a reservoir for containing a fluid of a type which causes the swellable material to swell. A method of swelling a swellable material included in a well tool includes the steps of: positioning the well tool in a well; and then activating a fluid to cause swelling of the swellable material. A method of swelling a swellable material includes the steps of: providing the swellable material which is capable of swelling when contacted by a fluid; positioning the swellable material in an environment in which the swellable material is contacted by another fluid which does not cause the material to swell; and swelling the swellable material by contacting the swellable material with the first fluid while the swellable material remains in contact with the other fluid.
摘要:
A well tool including swellable material and integrated fluid for initiating swelling. A well tool includes a swellable material and a reservoir for containing a fluid of a type which causes the swellable material to swell. A method of swelling a swellable material included in a well tool includes the steps of: positioning the well tool in a well; and then activating a fluid to cause swelling of the swellable material. A method of swelling a swellable material includes the steps of: providing the swellable material which is capable of swelling when contacted by a fluid; positioning the swellable material in an environment in which the swellable material is contacted by another fluid which does not cause the material to swell; and swelling the swellable material by contacting the swellable material with the first fluid while the swellable material remains in contact with the other fluid.
摘要:
A stage cementer and inflation packer apparatus. The apparatus comprises a mandrel with an external closing sleeve and an operating sleeve interlocked therewith. Below the operating sleeve is an opening sleeve. The opening sleeve is mechanically acutated by a pump-down plug in a plug-operated embodiment or by a differential pressure acting on the opening sleeve in a hydraulically operated embodiment, to actuate the opening sleeve to allow inflation of the packer element. A back check valve prevents the packer from deflating. After the packer is inflated, additional pressure is applied which ruptures a rupture disc to open a port to the well annulus above the set packer element. Cementing may be carried out through this port, and after the cementing operating, a plug engages the operating sleeve to move the operating sleeve in the external closure sleeve, thereby closing the cementing port. After cementing is complete, the center components of the apparatus may be drilled out, leaving the external closure sleeve to permanently seal the cementing port.
摘要:
Methods and apparatus are described which permit stage cementing within a well bore by means of a well tool which includes a cementer having cementing ports which may be responsively opened and closed by means of a knife gate valve. The knife gate valve is disposed within the housing between outer and inner cylindrical walls and being slidable therein between an open position, wherein the cementing port is open and fluid may be communicated therethrough, and a closed position, wherein the cementing port is closed thus blocking fluid communication through said port. The knife gate valve is further operationally associated with a driver assembly and trigger device adapted to receive a trigger signal and actuate the driver assembly in response thereto. In alternate exemplary embodiments, the trigger signal may comprise an acoustical, magnetic, electromagnetic wave, electrical or other suitable signal which is received by the trigger device. The driver assembly may comprise a hydraulic or pneumatic arrangement or a suitable electric motor arrangement.
摘要:
An apparatus and method of anchoring into a packer with a stinger assembly is disclosed. Further, an apparatus and method of releasing from a packer is also disclosed. The apparatus includes an elongated stinger member, a plurality of collet finger members slidably attached to the stinger, a shear ring member with a chamfered shoulder containing a plurality of splined extensions, with a plurality of shear pins contained through the shear ring member. Further, the apparatus includes a load ring attached to the elongated stinger for transferring the load of the downhole tool from the collet finger members to the load ring.
摘要:
A retrievable plug having an improved dog locking sleeve and having adjustable dog locking pins and pin sleeves retaining the dog locking sleeve within the packer mandrel.
摘要:
A removable plug for the J-tube of an offshore platform or marine structure comprising a plug housing, plug body releasably retained with the plug housing, and shear type threaded fastening means retaining the plug body within the plug housing. The plug body may comprise a buoyant plug body to assist in the retrieval of the plug body after the removal thereof from the plug housing.
摘要:
Methods and apparatuses for releasing a chemical in a well bore are disclosed. One apparatus includes a curved member configured for coupling to a casing, and a hollow member is connected to the curved member. A chemical container is disposed, at least in part, within the hollow space, and the hollow member extends at least partially around a hollow space.
摘要:
An apparatus and method for removing a frangible rupture disc or other frangible device from a wellbore casing. The casing has a special casing section defining a plurality of holes therethrough. Rupturable glass ceramic discs or inserts are disposed in the holes and retained therein. The glass ceramic discs or inserts are adapted to withstand fluid differential pressure normally present in the wellbore but are rupturable in response to impingement by a pressure wave thereon. The pressure wave is provided by a pressure wave generating device positionable in the casing string adjacent to the holes in the special casing section. The pressure generative device may generate a pressure pulse or an acoustical wave. Methods of perforating a well casing using a pressure pulse or an acoustical wave are also disclosed.