Multifunctional test and experiment platform for desk research of jet drilling

Abstract

The invention relates to a multi-functional test and experiment platform for indoor research of jet drilling, which includes a power module, an experimental working condition control module, a test and detection module, a fluid circulation module and a jet drilling assembly. The power module includes a micro-drilling experimental device and a mud pump; the experimental working condition control module includes a central control unit and a confining pressure control unit; the test and detection module includes a sensor detection unit, a data acquisition unit, a data processing unit, and a display storage unit; fluid circulation The module includes faucets, water tanks, sedimentation filter tanks, sewage pumps and a simulated wellbore with an open upper end and a closed lower end. The multifunctional test and experiment platform of the present invention can simulate the actual jet drilling process in the laboratory, creating necessary conditions for the indoor experimental research of jet drilling, and can realize automatic control during the experiment process, and can make the jet drilling underground and invisible Visualization of jet drilling process, thus turning semi-empirical research into scientific and quantitative research.

Description

Technical field [0001] The invention relates to the technical field of jet drilling, in particular to a multifunctional test and experiment platform used for indoor research of jet drilling. Background technique [0002] Jet drilling (Jet Drilling) is a kind of hydraulic action that uses pressure drilling fluid to generate high-speed jets when flowing through nozzles embedded in jet drill bits to assist the drill bit to break rocks and clean bottom hole cuttings, which can effectively increase the mechanical drilling speed. Drilling method. In the process of jet drilling, under the condition of the bottom of the well using the jet bit, the drilling fluid is ejected from the nozzle at high speed to form a jet, which is submerged by the drilling fluid in the wellbore, and its movement and development are restricted by the bottom and wall of the well. Belongs to submerged non-free jet. [0003] The high-pressure jet formed in the process of jet drilling can well clean the bottom hol...

AI Technical Summary

Problems solved by technology

[0007] At present, the research on jet drilling mainly focuses on the layout of the embedded nozzles on the jet drill bit, the hydraulic parameters of the jet and the hydraulic parameters of the drill bit, the relationship between hydraulic power transfer, the way to improve the hydraulic parameters of the drill bit, and the design of the hydraulic parameters of jet drilling. To better study the relevant content of jet drilling and further improve the ROP of jet drilling, it is necessary to carry out more in-depth research on jet rock breaking mechanism, bottom hole flow field optimization, nozzle structure optimization and other aspects in the jet drilling process. In the prior art, there is no experimental device specially used for more in-depth research on the jet drilling process, including jet rock breaking mechanism, bottom hole flow field optimization, nozzle structure optimization, etc.

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