Completion pipe column and completion technology for oil-gas well

The invention discloses a completion pipe column and completion technology for an oil-gas well and belongs to the technical field of completion pipe columns for oil production engineering. The completion pipe column for the oil-gas well is composed of an inner oil pipe, a safety valve and a hydraulic control pipeline, wherein an adapter connector is connected to the upper portion of the safety valve through threads, the adapter connector is provided with a step-shaped inner shoulder and connecting threads and is connected with the inner oil pipe and an outer pipe, and a through hole is formed in the inner shoulder of the adapter connector; the hydraulic control pipeline is located in the space between the inner oil pipe and the outer pipe, penetrates through the through hole in the inner shoulder of the adapter connector and is sealed through a sealing piece. The inner oil pipe and the hydraulic control pipeline are fixed together through a clamping ring. According to the completion pipe column and completion technology for the oil-gas well, the completion pipe column with the subsurface safety valve is obtained under the condition of non-well-killing operation, pollution to an oil-gas layer is reduced during well completion, and a reservoir stratum is effectively protected; the technology is low in cost, the pipe column is reliable in sealing, the completion technology is simple, non-well-killing operation can be achieved under the condition that the internal structure and functions of an original pipe column are not changed, and the application range is wide.