초록 ▼

A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressuriz

A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressurized gas actuates the test tool at substantially the same pressure as is used for testing the pipe section. A flexible enclosure confines the test gas which leaks from the pipe section. The enclosure defines a substantially annular chamber around the area to be tested to confine leakage test gas to prevent its dissipation into the atmosphere. An aperture is provided in the enclosure to permit a sensing probe to be inserted into the annular chamber between the enclosure and the pipe section to sense the presence of test gas.

대표청구항 ▼

A method of testing for leaks in oil field pipe at a rig floor by using a single source of pressurized test gas to actuate a testing tool positioned at a pipe test section and to pressurize the pipe test section to test for leaks, said method comprising: (a) pressurizing a test gas comprising a mixt

A method of testing for leaks in oil field pipe at a rig floor by using a single source of pressurized test gas to actuate a testing tool positioned at a pipe test section and to pressurize the pipe test section to test for leaks, said method comprising: (a) pressurizing a test gas comprising a mixture of a detectable quantity of helium tracer gas and a carrier gas in a ration of helium tracer gas to carrier gas greater than 1:9 by volume to a pressure of at least 3000 psi to provide said single source of pressurized test gas; (b) enclosing an area around the outside of the pipe to define a chamber around the pipe test section to confine a test gas therewithin; (c) actuating the test tool by introducing said pressurized test gas having a ratio of helium tracer gas to carrier gas greater than 1:9 by volume and at a pressure of at least 3000 psi from said single source of pressurized test gas into the test tool to seal off an internal section of pipe to form a closed volume pipe test section; (d) introducing said pressurized test gas from said single source of pressurized test gas at substantially the same ratio of helium tracer gas to carrier gas greater than 1:9 by volume and at substantially the same pressure of at least about 3000 psi as sued to actuate said test tool into said pipe test section; and (e) sensing the presence of leaking helium tracer gas in the chamber around the outside of the pipe test section with a sensing means.