An in-situ observation test machine for simulating the sand cleaning process of drilling

Abstract

The invention relates to an in-situ observation tester simulating a sand cleaning process in drilling, comprising a bottom plate, a slide plate, a transparent simulation sleeve, a fixing cylinder sleeve, a simulation hollow drill stem, a drill stem rotation drive mechanism, a drilling fluid cycle control device and a data acquisition device. In-situ observation in the sand cleaning process of drilling is tested by integrating parameter such as eccentricity, hole drift angle, drilling fluids of different features, pressure, flow, flow speed, torque, different sands, sand addition, sand-cleaning eyeholes and drilling stem sleeve surface roughness, and great significance is brought to sand cleaning mechanism of the drilling process, abrasion of the sleeve, sand cleaning features of drilling fluids and the like; the tester is simple in structure, has a clear principle and is convenient to operate.

Description

technical field [0001] The invention relates to the research on the deposition and removal process of drilling sand under different drilling conditions in petroleum drilling engineering, and in particular relates to an in-situ observation test machine for simulating the drilling sand removal process. Background technique [0002] With the rapid development of the global economy, the demand for petroleum products is increasing, and the scope of oil reservoir exploitation is increasing. However, unconsolidated sandstone oil reservoirs in my country have a wide distribution and large reserves, and oil production occupies a very important position. , and oil well sand production is the main contradiction in the exploitation of this type of reservoir, and this problem is particularly prominent, and problems such as sand deposition and sand sinking and pipe sticking also gradually appear during the drilling process, resulting in increased drilling fluid return resistance during dril...

AI Technical Summary

Problems solved by technology

The previous research on sand removal tests in the drilling process was less, and it was mainly based on software simulation research, without comprehensive consideration of different well types, drilling fluid formulation parameters, speed parameters, torque parameters, pressure parameters, and drill pipe eccentricity parameters in practice. , microscopic observation of friction and wear, and the study of the starting rolling, moving, and rotating motion of sand particles, etc.

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