| 摘要 |
A valve ( 136, 136', 136'', 200 ) adapted to replace an existing valve of a wellhead ( 114 ). Valve ( 136, 136', 136'', 200 ) can have similar dimensions as the existing valve it replaces to utilize existing wellhead connections. In one embodiment, a replacement bypass master valve ( 136 ) incorporates a fluid bypass pathway ( 168 ) to enable communication and conveyance of a production enhancing fluid ( 132 ) from a location external to the well through small diameter tubing ( 126 ) to a specific downhole location independent the position of a flow control member in interior chamber ( 166 ). Replacement bypass master valve ( 136 ') can include anchor seal assembly ( 122 ') disposed in locking profile 180 of upstream inlet bore ( 162 ) to enable communication from fluid bypass pathway ( 168 ) to lower injection conduit ( 128 ). In another embodiment, replacement valve ( 200 ) includes a groove in gate ( 208 ) sealingly receiving capillary injection tubing ( 204 ) when in a closed position.
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