An experimental method for simulating formation fluid overflow and lost circulation during drilling
A technology of formation fluids and experimental methods, applied in teaching models, educational tools, instruments, etc., can solve problems such as overflow that cannot be understood by students, and achieve the effect of simple and easy operation
Active Publication Date: 2017-07-28
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
The problem is that it is not dedicated to the simulation of overflow, well kick, blowout, and lost circulation. Therefore, it does not have a good effect on students' understanding of overflow, well kick, blowout, and lost circulation.
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Embodiment Construction
[0018] combined with figure 1 , to further describe the present invention:
[0019] A kind of experimental method for simulating formation fluid overflow and lost circulation in the drilling process mentioned by the present invention comprises the following steps:
[0020] First, the experimental equipment is assembled, and the experimental equipment includes a plexiglass inner tube 1, a plexiglass outer tube 2, an internal rotating motor 3, a drilling fluid metering pump 7, a drilling fluid storage tank 8, a gas flow meter 16, an air compressor 17, Gas-liquid mixer 18, formation fluid flow meter 20, formation liquid phase fluid storage tank 21, gas-liquid separator 25, computer 26, described plexiglass inner tube 1, plexiglass outer tube 2 form the experimental observation pipeline, and Experimental observation The top and bottom of the pipeline are respectively connected to the drilling fluid storage tank 8 and the formation liquid phase fluid storage tank 21 through pipeli...
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The invention relates to an experimental method for simulating formation fluid overflow and lost circulation in the drilling process. The technical scheme is as follows: firstly, an experimental device is assembled; secondly, an experimental method for positive circulation of drilling fluid; thirdly, an experimental method for gas overflow process The 4th, formation liquid phase fluid experimental method, the 5th, gas-liquid two-phase fluid overflow experimental method; The beneficial effect of the present invention is: thereby can observe the flow pattern in gas overflow, gas-liquid two-phase fluid overflow process Changes, wellhead oil pressure and casing pressure changes in the three overflow situations during well shut-in and normal circulation, and lost circulation can stimulate students' enthusiasm for learning and have an intuitive understanding of the process of formation fluid invasion into the wellbore and lost circulation , to deepen students' understanding and mastery of parameter changes during formation fluid overflow and lost circulation.
Description
technical field [0001] The invention relates to an experimental method for oil and gas development, in particular to an experimental method for simulating formation fluid overflow and lost circulation during well drilling. Background technique [0002] Although well leakage, overflow blowout and out-of-control blowout are what the oil industry has been trying to avoid by taking various measures, history has proved that such accidents cannot be eliminated as long as oil is developed. Due to the great harm of such accidents, drilling and production units will attach great importance to them. Therefore, students cannot come into contact with and cannot see such accidents during the drilling production practice. In-depth understanding and mastery of theoretical knowledge. At present, the knowledge of overflow, well kick, blowout and lost circulation in the drilling process at home and abroad is only a theoretical explanation, lack of relevant simulation teaching and experiment ...
Claims
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IPC IPC(8): G09B25/02
CPCG09B25/02
Inventor 尹邦堂林英松刘刚解伟史玉才
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)