Batch drilling well wellhead design and assembling-disassembling method for modular drilling machine

Abstract

The invention discloses a batch drilling well wellhead design and assembling-disassembling method for a modular drilling machine. The wellhead design comprises the following design of supporting facilities: wellhead deck design, split bell mouth design, bell mouth fixing mode design, bell mouth fixed suspension design, grouting pipeline fixed design of bell mouths, reflux pipes and metering pumps, bell mouth variable diameter design, bell mouth variable diameter hoisting special tool design, telescopic inner and outer drum horn tube design, sealing design of special pressure plate sealing or gas inflatable pneumatic tires, lifting pipe hoisting special design, and special lifting pipe suspending channel design which are easy enough to operate. The batch drilling well wellhead design and matched wellhead assembling-disassembling method for the modular drilling machine provided by the invention can solve the problem of time consumption caused by frequently moving of a derrick in batch drilling operation of the modular drilling machine, reduce hoisting risks and risks of high falling objects caused by dissembling and throwing wellhead parts and optimize assembling and disassembling method of wellheads, and further are simple and convenient in design and simple in operation mode.

Description

Technical field [0001] The invention relates to the technical field of drilling operations, in particular to a method for designing and disassembling and assembling a batch drilling wellhead of a modular drilling rig. [0002] This technology relates to a new oil and gas field development and application module drilling rig for batch development mode. The batch drilling operation mode is reform and innovation based on the conventional wellhead disassembly and assembly mode. Specifically, it uses a new system design to replace the original Optimizing and innovating the working method of the company, fundamentally solve the problem of labor-intensive and labor-intensive wellhead disassembly and assembly in batch drilling operations, while reducing operational risks, making operations more efficient and safe. Background technique [0003] With the development of oil and gas field development technologies in the western South China Sea, the development of oil and gas resources in the a...

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Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a modular drilling rig batch drilling wellhead design and disassembly method, specifically a new system design to optimize and innovate the original working mode, fundamentally solve the problem of batch drilling During the operation, the disassembly and assembly of the wellhead is time-consuming and labor-intensive, and at the same time reduces the operation risk, making the operation more efficient and safer

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