Simulation experiment device for migrating rock cuttings with circulation of deepwater drilling fluid and stabilizing well wall

A simulation experiment device, deepwater drilling technology, applied in wellbore/well components, earthwork drilling, measurement, etc., can solve problems such as the study of borehole wall stability that is not suitable for drilling fluid carrying rock-carrying laws

Inactive Publication Date: 2010-05-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that there is no suitable experimental device

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  • Simulation experiment device for migrating rock cuttings with circulation of deepwater drilling fluid and stabilizing well wall
  • Simulation experiment device for migrating rock cuttings with circulation of deepwater drilling fluid and stabilizing well wall
  • Simulation experiment device for migrating rock cuttings with circulation of deepwater drilling fluid and stabilizing well wall

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] Such as figure 1 , figure 2 As shown, the present invention includes several sections of simulated wellbore 1, simulated wellbore wall 3 arranged between the upper and lower sections of simulated wellbore 1, simulated drill pipe 2, drilling fluid delivery device, several temperature and pressure sensors and data processing equipment arranged on the ground device, the inner diameter of the simulated wellbore 3 is the same as that of the simulated wellbore 1, the upper and lower end surfaces of the simulated wellbore 3 are respectively provided with annular grooves matching the outer diameter of the simulated wellbore, and the upper and lower sections of the simulated wellbore 1 are respectively embedded in the simulated wellbore. In the annular groove on the upper and lower end surfaces of the well wall 3 and between the bottom surface of the annular groove a...

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Abstract

The invention discloses a simulation experiment device for migrating rock cuttings with circulation of deepwater drilling fluid and stabilizing well wall. The device comprises a plurality of simulation wellholes, simulation drill pipes, and a drilling fluid delivering device; simulation well wall is arranged between an upper simulation wellhole and a lower simulation wellhole; the simulation drill pipes are provided with a drilling fluid inflow passage along axial direction; the drilling fluid circular delivering device comprises a drilling fluid circulation loop formed by sequentially connecting fluid storage tank, cooling device, flowmeter, fluid pump, inlet of the drilling fluid inflow passage, outlet of the drilling fluid inflow passage, liquid-solid separator and again the fluid storage tank by pipelines; and the inner wall of the simulation wellholes is provided with a plurality of temperature and pressure sensors, and transmits the signals to a data processor for processing. The invention can simulate the circulation process of deepwater drilling fluid, can carry out property researches such as low temperature flow, rock cutting migrating and well wall stabilizing, and provide an experimental method and research means for deepwater drilling fluid research.

Description

technical field [0001] The invention relates to a deep-water drilling fluid simulation experiment device, in particular to a deep-water drilling fluid circulation rock-carrying and well wall stability simulation experiment device. Background technique [0002] Compared with land drilling or shallow water drilling, there are big differences between deep water drilling, such as low bottom temperature, high pressure, under-compacted formation, multiple layers of casing, and large diameter of riser in deep water. Technical problems and challenges. Therefore, deepwater drilling fluid must have some characteristics: 1. Good rheology at low temperature. As the water depth increases, the seawater temperature is getting lower and lower. The temperature at 3000 meters water depth is only 3-4°C, and in some areas it is even around 0°C. The temperature drop will bring many problems to drilling and oil production operations. Under low temperature conditions, the rheology of the drillin...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/06E21B47/07
Inventor 邱正松徐加放黄维安江琳于连香
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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