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Double-main-wellhead drilling system of semi-submersible drilling platform

A drilling platform, semi-submersible technology, applied in the direction of drilling equipment, underwater drilling, wellbore/well components, etc., can solve the problems of not being able to use each other as backup, so as to improve the efficiency of drilling operations, reduce labor intensity, and improve safety Effect

Inactive Publication Date: 2020-04-10
BAOJI PETROLEUM MASCH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drilling system using main and auxiliary derricks, the hook lifting capacity of the main wellhead is generally configured at 908 tons to 1150 tons, while the derrick hook lifting capacity of the auxiliary wellhead is generally configured at about 450 tons to 600 tons, which cannot be used as backup for each other

Method used

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  • Double-main-wellhead drilling system of semi-submersible drilling platform

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] The present invention is a double main wellhead drilling system of a semi-submersible drilling platform, which is arranged on the center of the main deck of the hull of the semi-submersible drilling platform corresponding to the two wellheads, such as figure 1 As shown, including the moon pool 2 set in the middle of the main deck, such as Figure 2-7 As shown, the port side of the moon pool 2 is provided with a Christmas tree processing system 3, the starboard side of the moon pool 2 is provided with a blowout preventer processing system 4, the upper side of the moon pool 2 is provided with a drill floor 5, and instruments are installed on the drill floor 5 / driller's floor 6, drawworks skid 7, double derrick 8, instrumentation / driller's floor 6 is provided with a local instrument room 18 and two drillers' rooms 19, the two drillers' r...

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Abstract

The invention discloses a double-main-wellhead drilling system of a semi-submersible drilling platform. The double-main-wellhead drilling system is arranged at the center, corresponding to two wellheads, of a main deck of a ship body of the semi-submersible drilling platform; the double-main-wellhead drilling system comprises a moon pool which is arranged at the middle part of the main deck; the larboard of the moon pool is provided with a Christmas tree treatment system; the starboard of the moon pool is provided with a blowout preventer treatment system; a drilling platform is arranged abovethe moon pool; the drilling platform is correspondingly provided with an instrument / driller's station, a winch pry unit and a duplex derrick; the position of the duplex derrick corresponds to the twowellheads; the top of the duplex well rack is provided with an overhead crane; the double-main-wellhead drilling system further comprises a pipe column stock dump, a water isolating pipe treatment system and a pipe column conveying system, wherein the pipe column stock dump, the water isolating pipe treatment system and the pipe column conveying system are arranged on the main deck; and the Christmas tree treatment system, the blowout preventor treatment system, the water isolating treatment system and the pipe column conveying system are correspondingly distributed in left, right, front andrear directions of the drilling platform. The double-main-wellhead drilling system disclosed by the invention improves the efficiency of drilling operation and improves the safety of an operator.

Description

technical field [0001] The invention belongs to the technical field of offshore oil and gas exploration and development equipment, and relates to a double main wellhead drilling system of a semi-submersible drilling platform. Background technique [0002] The semi-submersible drilling platform is a mobile drilling platform with a small water plane. It is currently the main drilling equipment for deepwater oil and gas drilling, and the drilling system is the core of the drilling platform. Traditional semi-submersible drilling platforms usually use a drilling system with a single derrick, a half derrick, and main and auxiliary derricks. Modern semi-submersible drilling platforms with an operating water depth of more than 7,500 feet mainly use a configuration of main and auxiliary derricks and a half-derrick, and semi-submersible drilling platforms with an operating water depth of less than 5,000 feet use a single derrick. [0003] The drilling system using a single derrick ha...

Claims

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Application Information

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IPC IPC(8): E21B7/12E21B33/064E21B19/09E21B19/14B63B35/44
CPCB63B35/4413E21B7/12E21B19/09E21B19/143E21B33/064
Inventor 王维旭杨秀菊张斌胡楠李云鹏
Owner BAOJI PETROLEUM MASCH CO LTD
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