The invention belongs to the field of machinery manufacture, in particular relates to a long-
stroke no-killing well working device of an oil-
water well. The long-
stroke no-killing well working device of the oil-
water well comprises a moving slips, an annular
blowout preventer, a totally-enclosed
blowout preventer, an upper half-enclosed
blowout preventer, a
lower half-enclosed blowout preventer, a hoisting
hydraulic cylinder, a
wellhead four-way, a
cutting blowout preventer, a fixed slips, a double-disc blowout preventer, a reducing
flange, an operating rod and a cleaning tool. The long-
stroke no-killing well working device is characterized in that the device also comprises a flexible rod, a multistage
hydraulic cylinder and a rotation
flange. The stroke of operation is improved by using the multistage
hydraulic cylinder and the flexible cylinder, and the moving slips can be rotatably moved by using the rotation
flange to drive the operating rod and the cleaning tool to clear the
fouling of an inner wall of the oil
pipe in a rotating way. The device of the invention also can press a lower oil
pipe under the condition of no-injection of the oil
pipe. The device is convenient to operate, greatly improves the working efficiency and is favorable for generalization and application.