Indoor drilling simulation device in multi-factor environment and evaluation method

Abstract

The invention provides an indoor drilling simulation device in a multi-factor environment and an evaluation method, and belongs to the technical field of influences of drilling fluid treatment agentsand drilling fluid systems on the drilling speed in drilling engineering. The indoor drilling simulation device comprises a rock core clamping system, a shaft bottom circulating system, an overburdenpressure system, a formation pressure system, a drilling pressure simulation system, a rotary driving system, a drilling depth measuring system and an automatic control and data acquisition system. The rock core clamping system is a sealing device for clamping rock cores and is used for simulating the downhole pressure and the temperature environment. The shaft bottom circulating system, the overburden pressure system, the formation pressure system, the drilling pressure simulation system and the rotary driving system are connected with the rock core clamping system through pipelines. The drilling depth measuring system is connected with the drilling pressure simulation system. The automatic control and data acquisition system is connected with the rock core clamping system, the shaft bottom circulating system, the overburden pressure system, the formation pressure system, the drilling pressure simulation system, the rotary driving system and the drilling depth measuring system throughcircuits.

Description

technical field [0001] The invention belongs to the technical field of the influence of drilling fluid treatment agent and drilling fluid system on drilling speed in drilling engineering, and specifically relates to an indoor drilling simulation device and evaluation method in a multi-factor environment, which is used for simulating During the drilling process, the speed, drilling pressure, overburden pressure, formation pressure, bottom hole circulation pressure and other multi-factor condition parameters that affect drilling, and the test to evaluate the impact of different drilling fluid treatment agents and drilling fluid systems on the drilling speed and bottom hole cleaning effect . Background technique [0002] With the progress of oil exploration and development, the drilled formations are getting deeper and more complicated, and the drilling speed of the well type is getting slower and slower. Increasing the speed and efficiency is an important task at present and i...

AI Technical Summary

Problems solved by technology

However, it can only simulate the confining pressure on the formation, that is, the formation pressure, and cannot simulate the forces in other directions on the rock formation and the drilling fluid circulation pressure. The artificial simulated core used cannot truly represent the real situation of the downhole rock formation. Therefore, it cannot truly reflect the influence of drilling fluid treatment agents, systems, drill bits and parameters on the ROP. In addition, it is only applicable to the research of vertical wells and cannot be applied to deviated well sections.

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