摘要:
A surge absorber for cryogenic fluids comprises A. A FIRST CONTAINER FOR CONTAINING PRESSURIZED GAS, AND B. A SECOND CONTAINER TO RECEIVE SURGING CRYOGENIC LIQUID VIA AN INLET TO THE SECOND CONTAINER, THE UPPER INTERIOR OF THE SECOND CONTAINER BEING IN OPEN COMMUNICATION WITH THE INTERIOR OF THE FIRST CONTAINER SO THAT GAS IN THE FIRST CONTAINER IS INCREASINGLY PRESSURIZED AS CRYOGENIC LIQUID IS RECEIVED INTO THE SECOND CONTAINER.
摘要:
A well apparatus and method for communicating a plurality of flow conductor passages extending through a housing to enable controlled circulation between passages when desired while blocking flow through portions of the passages to assure a desired circulating flow path for performing various well operations. Increasing fluid pressure in either or both flow conductor passages establishes communication therebetween by operating a valve means while blocking flow in the other passage to obtain a desired flow circulation path. In the preferred embodiment the valve means for blocking the other flow conductor is located below the valve means to enable replacement of a standing valve by the use of fluid pressure movable tool trains without subjecting the producing formation to the fluid pressure circulating the tool train.
摘要:
Subsurface well apparatus and method of operating same, wherein a controlled ball valve or closure means is provided, with means for mounting same in a well tubing for normally opening and closing flow through the well tubing, and wherein a fluid flow control assembly having a replacement ball valve therewith is adapted to be dropped in or otherwise lowered through the well tubing so as to position same above said controlled ball valve for subsequent operation of said replacement valve to thereafter serve as a replacement for said controlled valve.
摘要:
A new and improved subsurface safety valve which is inserted into well tubing without requiring removal of the tubing, and which replaces worn, deteriorated and fully or partially inoperative safety valves in the well tubing to prevent blow-outs in wells. The replacement subsurface safety valve may be subsequently removed after insertion without requiring removal of the well tubing.
摘要:
A subsurface well apparatus for connection in a production tubing having a housing with a controlled ball type bore closure means therein for normally controlling flow of fluid through the bore of the tubing and adapted to receive, secure and operate a replaceable means for controlling flow in the bore of the housing when the closure means malfunctions. The means for controlling flow in the bore is installed and retrieved from the housing through the bore of the tubing by a method utilizing pressure in the bore of the tubing.
摘要:
A mud saver valve adapted to be disposed below a kelly for controlling the discharge of mud through the kelly into the drill string and for preventing loss of mud at the derrick floor from the kelly when it is disconnected with the mud saver valve from the drill string, wherein means are provided for preventing a closure of the mud saver valve, even though the mud supply pressure to the kelly is cut off, if there is well pressure in the drill string which might blow out upon a disconnection of the kelly, whereby the danger of having a well blowout upon a disconnection of the kelly may be avoided.
摘要:
A well pipe protector comprises: A. A C-shaped body including a metallic core and a rigid plastic sheath attached to the core and extending outwardly therefrom, B. NON-METALLIC TERMINALS IN THE BODY TO BE DRAWN TOGETHER IN INTERFITTING RELATION FOR RETENTION AFTER LATERAL APPLICATION OF THE BODY ABOUT THE PIPE, AND C. ELASTOMER INSERT MEANS CARRIED AT THE INNER SIDE OF THE BODY TO BE COMPRESSED BETWEEN THE BODY AND PIPE IN RESPONSE TO SAID DRAWING TOGETHER OF THE TERMINALS.
摘要:
A swinging blowout preventer head with fluid connector wherein the swinging head is pivotally connected to a blowout preventer body so that a hydraulic fluid system to the ram cylinder mounted with the head remains sealed off at all times, including during the swinging of the head to and from its open and closed positions. Such fluid connector is non-load bearing, and preferably is capable of lateral movement as well as arcuate movement to assure sealing abutment between the body and the swinging head in the closed position while still confining the hydraulic fluid in the fluid system.