Experimental device for simulating intermittent production of low-permeability reservoir oil well

Abstract

The invention belongs to the technical field of low-permeability reservoir oil well production experiments, and particularly relates to an experimental device for simulating intermittent production ofa low-permeability reservoir oil well. The experimental device comprises a rack, a seepage plate, a cover plate, sand filling grooves, an oil filling port, an oil outlet, an oil inlet pipe, an oil outlet pipe, a left swing arm, a right swing arm, a sampling pipe, an electromagnetic valve, a high-pressure pump, a filter, a connecting pipe, a lifting pump, a return pipe, an oil storage tank and a control machine, wherein the cover plate is arranged at the top of the seepage plate, the sand filling grooves are formed between the seepage plate and the cover plate, the oil filling port and the oiloutlet are formed in the two sides of the bottom of the seepage plate correspondingly, and the oil filling port and the oil outlet are communicated with the sand filling grooves. According to the experimental device for simulating intermittent production of the low-permeability reservoir oil well, the four sand filling grooves in a quarter fan shape are formed in the seepage plate, sand and gravel filler of various specifications can be filled in one experiment, a control group can be conveniently arranged, the experiment efficiency is improved, and the experiment accuracy can be improved.

Description

Technical field [0001] The invention relates to the technical field of production experiments for oil wells in low-permeability oil reservoirs, in particular to an experimental device for simulating intermittent production of oil wells in low-permeability oil reservoirs. Background technique [0002] A low-permeability oil field refers to an oil field with low permeability, low abundance and low single well productivity. Low-permeability oil and gas fields are of great significance in my country’s oil and gas development. The distribution of my country’s low-permeability oil and gas resources is characterized by a large number of oil and gas, multiple types of oil and gas reservoirs, and a wide range of distribution. "In the proven reserves, low-permeability reservoirs account for a high proportion of reserves, accounting for more than 2 / 3 of the country’s reserves, with huge development potential. [0003] With the increase in the scale of oil exploration, the probability of disco...

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Problems solved by technology

[0004] However, the existing experimental devices for interstitial production in low-permeability reservoirs can usually only simulate the seepage of one kind of filler at a time, the simulation efficiency is low, and it is impossible to set up a control experiment, and the experimental data is not accurate enough

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