Single-pass running tool and method for casing hanger and sealing assembly for underwater wellhead

Abstract

The invention discloses a single-pass running tool and method for a casing hanger and a sealing assembly for an underwater wellhead. The tool comprises an upper body, a lower body, a core shaft, and adriving body, wherein the upper body and the lower body are connected with each other; the core shaft penetrates through the insides of the upper body and the lower body; a driving body is positionedbetween the upper body and the lower body; and a joint is arranged on the upper body. According to the technical scheme, the single-pass running tool of the casing hanger and the sealing assembly forthe underwater wellhead is manufactured with simple operation and reliable effect. The same tool has multiple functions, and can better meet the operation effect.

Description

technical field [0001] The invention relates to the field of offshore oil drilling, in particular to a single-pass feeding tool and method for an underwater wellhead casing hanger and sealing assembly. Background technique [0002] The wellhead equipment used in offshore oil drilling will use a lot of pick-up and delivery tools. The function and structure of these tools directly affect the drilling efficiency and the operating efficiency of the platform. In the high cost of deep-water operations, operating efficiency is very important. At present, these The equipment is mainly provided by foreign companies. The performance and structure of each company’s equipment are different, and the efficiency of the operation is different. With the further deepening of deep-water oil exploration and development, the depth of the operation is getting deeper and deeper, and the requirements for the efficiency of the operation are getting higher and higher. Therefore, the requirements for ...

AI Technical Summary

Problems solved by technology

[0002] The wellhead equipment used in offshore oil drilling will use a lot of pick-up and delivery tools. The function and structure of these tools directly affect the drilling efficiency and the operating efficiency of the platform. In the high cost of deep-water operations, operating efficiency is very important. At present, these The equipment is mainly provided by foreign companies. The performance and structure of each company’s equipment are different, and the efficiency of the operation is different. With the further deepening of deep-water oil exploration and development, the depth of the operation is getting deeper and deeper, and the requirements for the efficiency of the operation are getting higher and higher. Therefore, the requirements for the tools used in the installation and recovery of petroleum equipment are also getting higher and higher. Most of the tools used in the past operations have a single and unique function for each tool. To achieve Different functions require different tools, which increases the number of operations, reduces the efficiency of operations, and increases the cost of operations.

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