Operation Technology of Shore-supported Mud Station System for Offshore Drilling

Abstract

The invention belongs to the field of offshore drilling and particularly relates to an operating process of an offshore drilling shore-based supporting mud plant system. The system adopted by the operating process comprises a mobile pump skid integrated unit, a movable slurry preparing tank integrated unit, a movable storage tank integrated unit, a waste liquid treatment skid integrated unit and pipes, a control system and the like for connecting the integrated units. The operating process achieves drilling fluid preparation, transfer and recovery treatment functions and the like by conducting switching control on a working valve in the mud plant system. In the mud plant system, the integrated units are formed by setting different functions, quick transfer and quick assembly of a whole shore-based supporting mud plant can be achieved, the efficiency is high, and the economic benefits are very remarkable.

Description

technical field [0001] The invention belongs to the field of ocean drilling, and in particular relates to an operation process of an ocean drilling shore-based support mud station system. Background technique [0002] Drilling fluid is called the blood of oilfield drilling, and its main functions in drilling operations are as follows: [0003] 1), cleaning the bottom of the well, carrying and suspending cuttings; [0004] 2), protect the well wall; [0005] 3), cooling and lubricating drill bit and drill string; [0006] 4), balance formation pressure; [0007] 5), assist in breaking rocks; [0008] 6) Protect oil and gas layers. [0009] The composition of the drilling fluid is very complex, and often needs to be selected according to different geological conditions and drilling techniques, combined with past experience, and it is even possible to replace the drilling fluid with different parameters in different drilling stages of the same well. [0010] In recent yea...

AI Technical Summary

Problems solved by technology

[0011] Offshore drilling mainly uses drilling platforms or drilling ships for drilling operations. The construction and operation costs of these offshore equipment are very expensive. At the same time, because the drilling operation itself requires a large number of electromechanical supporting equipment, the space on the drilling platform is very limited, and the configuration of drilling fluid is very limited. It is very time-consuming and labor-intensive. It is a common practice at home and abroad to build shore-based support mud stations and provide drilling fluid-related technical support for offshore drilling.

[0012] In the past, some domestic companies have also built some mud stations, but the traditional fixed storage tanks and fixed equipment are generally used to build stations, which cannot be moved, have single functions, and cannot be expanded. A lot of on-site installation work is required, and the station construction takes a long time. The overall level of automation is low, the degree of integration of complete sets of equipment is low, and the reliability is poor. All the above deficiencies need to be improved urgently

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