Method and device for testing low-temperature property of drilling fluid

Abstract

The invention provides a method and a device for testing low-temperature property of drilling fluid. The device comprises a high and low temperature experimental box (1), a data acquisition system (9), a camera (6) arranged at the top of experimental box body, a tester and two temperature sensors in the experimental box. The two temperature sensors are respectively used for detecting temperature in a working chamber in the experimental box and temperature of drilling fluid on an operation platform (11); the data acquisition system is disposed outside the experimental box and is respectively connected with the camera and the temperature sensors through signal wires. The method comprised steps of making constant or variable low-temperature and low-humidity environment in the working chamber with the high and low temperature experimental box, putting the drilling fluid and the tester on the operation platform, reducing temperature to a set value, then detecting properties of the drilling fluid with the temperature sensors and a computer, meanwhile observing scale of the tester with the camera, and uploading images onto the screen of the computer to display. The invention has advantages of convenient temperature control, accurate detection, low cost and the like.

Description

technical field [0001] The invention relates to the field of drilling (well) engineering, in particular to a method and device for testing the low-temperature performance of drilling fluid. Background technique [0002] As energy shortages intensify, offshore oil and gas exploration is increasingly moving to deep water areas. Due to the depth of seawater, the circulation and heat exchange of drilling fluid in drilling will cause the mud temperature to be very low. In addition, the exploration and development of natural gas hydrate, which is considered to be an ideal alternative energy source in the future, has become a hot spot in contemporary earth science and energy industry research. However, most hydrates are stored in deep sea areas with water depths exceeding 500 meters. Low temperature drilling fluid. In addition, in geological exploration and engineering drilling construction in permafrost regions such as northern and western my country, the use of drilling fluid i...

AI Technical Summary

Problems solved by technology

[0004] In addition to the need to test the performance of drilling fluids under high temperature and high pressure conditions during deep oil and gas exploration, conventional drilling fluid performance tests are carried out at room temperature. To meet the needs of soil drilling, it is necessary to create a corresponding temperature environment and perform performance tests in this environment in order to design a drilling fluid system suitable for low temperature use

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