초록 ▼

An oil flow line and power device system has a tube for the transportation of oil and a power device which can be received in the tube. The tube is provided with an electric power transmission line extending along at least some of the length and has a first power transfer unit which can cooperate wi

An oil flow line and power device system has a tube for the transportation of oil and a power device which can be received in the tube. The tube is provided with an electric power transmission line extending along at least some of the length and has a first power transfer unit which can cooperate with a second power transfer unit on the power outlet device such that the other power transfer units cooperate to transfer power from the transmission line to the power device.

대표청구항 ▼

An oil flow line and power device system has a tube for the transportation of oil and a power device which can be received in the tube. The tube is provided with an electric power transmission line extending along at least some of the length and has a first power transfer unit which can cooperate wi

An oil flow line and power device system has a tube for the transportation of oil and a power device which can be received in the tube. The tube is provided with an electric power transmission line extending along at least some of the length and has a first power transfer unit which can cooperate with a second power transfer unit on the power outlet device such that the other power transfer units cooperate to transfer power from the transmission line to the power device. ill pipe, and wherein said outer cylinder is connectable to electronic apparatus outside of said well hole; and further including poppet valve operative to be actuated at an excessive pressure to provide a bypass flow route for said fluid away from said valve structure piston. 5. A method of operating a well hole logging tool comprising the steps of connecting said logging tool to the end of a drill pipe, lowering said logging tool on the end of said drill pipe into a drill hole, pumping mud down said drill pipe, said mad flowing through said logging tool via a valve structure situated within said logging tool; said method comprising the further steps of detecting when said logging tool becomes stuck in the drill hole by detecting restriction of mud flow in the drill pipe, caused by operation of said valve means, and on detection of such restriction halting movement of said drill pipe in said drill hole.