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US4651827A
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Hydraulically controlled safety valves for incorporation in production tubes of hydrocarbon production wells
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US4648268A
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Method of defining homogeneous rock formation zones along a borehole on the basis of logs
|
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GB8519480D0
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Coastal installation for loading or unloading liquid at cryogenic temperature
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GB8512658D0
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Water deaeration process
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DE3517484A1
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Method for working deposits of liquid hydrocarbons
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US4646025A
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Magnetic probe exploration device for determining residual fossil magnetization of well hole rocks
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GB8507347D0
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Geomechanical probe for a drilling well
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FR2578978A1
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Method and device for measuring the refractive index of a medium
|
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GB8505891D0
|
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Device for working on a submerged valve
|
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GB8501511D0
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Control valve
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GB8432078D0
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Vertical seismic profiling
|
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US4609214A
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Thermally insulated fluid transport line
|
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GB8430256D0
|
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Sliding-sleeve valve for an oil well
|
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US4566541A
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Production tubes for use in the completion of an oil well
|
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GB8419401D0
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Process for purifying natural gas
|
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GB8401132D0
|
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Safety installation for a submerged drilling well-head
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US4505295A
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Apparatus for inserting a shut-off device laterally into a pipe
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GB8333418D0
|
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Improvements in and relating to hydraulic shock-absorbing jacks
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GB8333276D0
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Automatic hydraulic connectors
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GB8333170D0
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Improvements in and relating to drive rods for driving a string of drilling rods
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