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High-pressure well mouth based on self-elevating drilling platform operation and matched tool of high-pressure well mouth
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A drilling platform, self-elevating technology, applied in drilling equipment, wellbore/well components, drill pipe, etc., to achieve high bearing capacity and improve sealing effect
Pending Publication Date: 2022-03-25
CNOOC TIANJIN BRANCH +2
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[0003] The purpose of the present invention is to provide a high-pressure wellhead based on a jack-up drilling platform and its supporting tools, which can effectively solve the problems of efficient running and recovery of the high-pressure wellhead and effective locking with the low-pressure wellhead
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Embodiment 1
[0026] Example 1: A high-pressure wellhead based on a jack-up drilling platform
[0027] Embodiment 1 provides a high-pressure wellhead based on a jack-up drilling platform, and its structure will be described in detail below.
[0028] refer to Figure 1 to Figure 3 , the high-pressure wellhead for a jack-up drilling platform includes a high-pressure wellhead body 2 and a hanging ring 3 , a retaining ring 4 , a locking ring 5 and a centralizing ring 6 arranged on the high-pressure wellhead body 2 sequentially from top to bottom.
[0029] The shape of the high-pressure wellhead body 2 is a hollow cylinder, the upper port of the high-pressure wellhead body 2 is provided with an internal thread 1, the high-pressure wellhead delivery tool 200 is provided with an external thread 9, and the internal thread 1 at the upper end of the high-pressure wellhead body 2 is used for connecting with The external thread 9 of the high-pressure wellhead delivery tool 200 realizes threaded connec...
Embodiment 2
[0034] Example 2: A supporting tool for high-pressure wellheads based on jack-up drilling platforms
[0035] Embodiment 1 provides a supporting tool for a high-pressure wellhead based on a jack-up drilling platform, which is used in conjunction with the high-pressure wellhead in Embodiment 1, and its structure will be described in detail below.
[0036] The supporting tools for the high-pressure wellhead of the jack-up drilling platform include a high-pressure wellhead pick-up tool 200 and a low-pressure wellhead head 100,
[0037] refer to Figure 4 , the outer wall of the high-pressure wellhead delivery tool 200 is provided with an external thread 9 for threaded connection with the internal thread 1 of the high-pressure wellhead body 2 .
[0038] In order to improve the tightness of installation, a dovetail groove 8 is arranged on the outer wall of the high-pressure wellhead pick-up tool 200, and a sealing ring is arranged on the dovetail groove 8.
[0039] Specifically, t...
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Abstract
The invention discloses a high-pressure well mouth based on self-elevating drilling platform operation and a matched tool of the high-pressure well mouth. The high-pressure well mouth comprises a high-pressure well mouth body, a sitting hanging ring, a retaining ring, a locking ring and a centralizing ring, wherein the sitting hanging ring, the retaining ring, the locking ring and the centralizing ring are sequentially arranged on the high-pressure well mouth body from top to bottom. According to the high-pressure well mouth for the self-elevating drilling platform, the upper end opening of the high-pressure well mouth body is provided with the internal thread, the high-pressure well mouth taking and conveying tool is provided with the external thread, the high-pressure well mouth body and the high-pressure well mouth taking and conveying tool are connected through the threads, and recycling and conveying of the high-pressure well mouth body are achieved; the locking ring of the high-pressure well mouth can be separated from the locking ring groove of the low-pressure well mouth through the unlocking pin, and the high-pressure well mouth can be recycled.
Description
technical field [0001] The invention relates to the technical field of marine drilling, in particular to a high-pressure wellhead operated on a jack-up drilling platform and its supporting tools. Background technique [0002] The high-pressure wellhead and its supporting tools based on the operation of the jack-up drilling platform can effectively solve the problems of efficient running and recovery of the high-pressure wellhead and effective locking with the low-pressure wellhead. Contents of the invention [0003] The purpose of the present invention is to provide a high-pressure wellhead based on a jack-up drilling platform and its supporting tools, which can effectively solve the problems of efficient running and recovery of the high-pressure wellhead and effective locking with the low-pressure wellhead. [0004] The invention provides a high-pressure wellhead based on a jack-up drilling platform, which includes a high-pressure wellhead body and a mounting ring, a reta...
Claims
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Application Information
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