Comprehensive simulation experimental device of drilling circulation system

Abstract

The invention relates to a comprehensive simulation experimental device of a drilling circulation system. The comprehensive simulation experimental device of the drilling circulation system comprises a drilling liquid circulation loop, a rock debris circulation branch, an air injection branch and a data collection system. The drilling liquid circulation loop is formed by an annulus testing section, a Parshall flume, a vibration screen, a liquid storage pool and a frequency changing pump. The rock debris circulation branch is formed by sequentially connecting an air propeller, a rock debris collection tank, a packing tank and a screw pump through pipelines, wherein the air propeller is arranged on the vibration screen, and the screw pump is connected to the position of an inlet of the annulus testing section through a pipeline. The air injection branch is formed by connecting an air storage tank and an air compressor through a pipeline, wherein the compressor is connected with a tee joint through a pipeline. By means of the comprehensive simulation experimental device of the drilling circulation system, the migration rule of annulus rock debris under different hole drift angles can be observed, and radial concentration of the annulus rock debris under different hole drift angles and grain composition of the annulus rock debris in different river basins can be quantitatively measured.

Description

1. Technical field: [0001] The invention relates to a device for simulating the circulating flow process of circulating media such as drilling fluid and gas in the drilling process and an early overflow detection device, in particular to a comprehensive simulation experiment device for the drilling circulation system. 2. Background technology: [0002] During the drilling process of oil and natural gas resources, the drill bit continuously breaks rocks to form a new wellbore, and the cuttings produced are carried to the surface by the circulating medium (drilling fluid, gas) through the annular space (the annular space between the drill string and the wellbore). It is easy to form cuttings beds or stagnation areas during the drilling of displacement wells, horizontal wells, multi-branch wells and other complex structure wells. If the design of hydraulic parameters or aerodynamic parameters is unreasonable during the drilling process, the thickness of the sedimentary cuttings...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a comprehensive simulation experiment device for the drilling circulation system, which is used to solve the multiphase flow process of annular cuttings-drilling fluid, cuttings-gas and cuttings-gas-drilling fluid in the prior art under drilling conditions. Problems that cannot be described and the radial concentration of cuttings cannot be quantitatively measured, and can provide an experimental platform for indoor research on early detection of overflow

Images