| 摘要 |
A hydrocarbon producing well located at an offshore site, completely submerged beneath the water. The well includes a flow line extending from a reservoir in the substrate, which flow line passes along the floor of the body of water, and thence to a collection point. Flow control mechanism at the well head regulates fluid flow through said line. A casing extending into the substrate and terminating at the floor of the latter, substantially surrounds and forms a protective barrier about the upper portion of the flow line. The casing is provided with means for actuating the flow control mechanism whereby to discontinue fluid flow through the line under emergency conditions at such time as the actuating means is tripped.
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