Drilling hydraulic differential type density transducer steady-current bearing device

Abstract

The invention provides a drilling hydraulic differential type density transducer steady-current bearing device, and belongs to the technical field of oil and gas exploration. The drilling hydraulic differential type density transducer steady-current bearing device structurally comprises a transducer supporting rod and a transducer pressure diaphragm piece. The transducer pressure diaphragm piece is arranged on a rod body of the transducer supporting rod. The outer periphery of the transducer supporting rod where the transducer pressure diaphragm piece is located on is provided with a ball cover. The ball cover is formed by connecting an incident flow surface half ball cover and a back flow surface half ball cover in an oppositely buckled mode. The transducer supporting rod penetrates through a ball shell in the longitudinal axis direction. A drooping falling opening is defined at the bottom end by an incident flow reverse rotating curved wing and a back flow reverse rotating curved wing. The transducer supporting rod extends downwards and penetrates out of the drooping falling opening. Nose wing holes are evenly formed in the one-third concentrated area of the ball crown surface ofthe back flow surface half ball cover, and the nose wing holes facing the consistent direction form a nose wing hole filtering net. By means of the drilling hydraulic differential type density transducer steady-current bearing device, density measurement errors are eliminated, accurate density data are provided for establishment of a safe drilling fluid system, the drilling hydraulic differentialtype density transducer steady-current bearing device is advantageous to the safety of drilling construction, and the density of a drilling fluid is truly reflected.

Description

Technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a steady flow bearing device of a drilling hydraulic differential density sensor. Background technique [0002] Drilling fluid refers to the fluid medium used in the drilling process. The jargon of drilling fluid is called mud. Drilling fluid can be liquid or gas, therefore, drilling fluid should be exactly called drilling fluid. During the drilling process, the circulating flushing medium used in the hole is also called drilling flushing fluid. Drilling fluid can be divided into water, mud, clay-free flushing fluid, emulsion, foam and compressed air according to its composition. Clear water is the earliest drilling fluid used, no treatment is required, easy to use, suitable for intact rock formations and areas with sufficient water sources. Mud is a widely used drilling fluid, which is mainly suitable for unstable rock formations such as loose, well-developed fiss...

AI Technical Summary

Problems solved by technology

[0005] (1) Density measurement errors will lead to the inability to establish a safe drilling fluid system, which is not conducive to the safety of drilling construction;

[0006] (2) It cannot truly reflect the density of drilling fluid, resulting in waste of drilling fluid configuration materials and increasing exploration costs;

[0007] (3) The density measurement is inaccurate, the bottom hole pressure system cannot be accurately established, and it is difficult to maintain the balance between the bottom hole pressure and the bottom pressure;

[0008] (4) Inaccurate density measurement is not conducive to carrying cuttings at the bottom of the well, and the well washing is not thorough, which may easily cause downhole accidents;

[0009] (5) After a complex accident occurs, without accurate density reference, it is easy to cause mistakes in decision-making to deal with the problem, which directly affects the exploration benefits;

[0010] (6) In order to maintain accurate density measurement, operators need to wash and maintain the density sensor with clean water frequently, which increases labor intensity, is not conducive to occupational health protection and wastes water resources;

[0011] (7) It is not conducive to the function of comprehensive mud logging in oil and gas exploration, which reduces the quality of work

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