CENTRAL SHAFT FOR BRIDGE PLUG, BRIDGE PLUG AND SETTING METHOD FOR THE SAME |
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| 申请号 | US15718591 | 申请日 | 2017-09-28 | 公开(公告)号 | US20180305997A1 | 公开(公告)日 | 2018-10-25 |
| 申请人 | Aimin Chen; | 发明人 | Aimin Chen; | ||||
| 摘要 | The present disclosure discloses a central shaft for a bridge plug, a bridge plug and a setting method for the bridge plug, and relates to the technical field of bridge plug. The present disclosure addresses the technical problems existing in the prior art that degradable plastics and degradable metal materials are unable to manufacture a bridge plug with a large inner diameter. The central shaft comprises a setting mandrel and a setting tubular shaft, and the setting tubular shaft includes a squeezing shoulder for squeezing a compression ring or a reducing support ring of the bridge plug, and a support trunk; after the setting mandrel is disconnected from the downstream-end support, the setting mandrel can be withdrawn from the central hole of the setting tubular shaft so that the central hole of the setting tubular shaft forms an internal fluid channel of the bridge plug; and the strength of the material of the setting mandrel is higher than the strength of a degradable material or corrodible material, and the material of the setting tubular shaft is a degradable material or a corrodible material. The bridge plug comprises the central shaft provided in the present invention. The present disclosure is used to enlarge the inner diameter of the bridge plug, and improve the plugging effect, anchoring performance and construction convenience of the bridge plug. | ||||||
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