Single-grip right-hand set packer is composed by hydraulic anchor, circulating system, packer element, mechanical slip and transposer. Single slip support, rotating string tools to set and pull up string to unset. Slip and anchor are after special treatment, could touch casing surface strictly. Anchor spring and drag block spring are high-tensile and high strength, which could prevent of packer string block cause of anchor spring rust together with surface and could not back.