Method for oil extraction by means of air injection and low-temperature oxidation and experiment device

An experimental device and air injection technology, which is applied in the direction of fluid extraction, earthwork drilling, wellbore/well components, etc., can solve the problems of low recovery rate and high investment, and achieve the effect of simple structure and flexible disassembly of the device

Inactive Publication Date: 2010-06-09
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

The above two mining methods have l

Method used

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  • Method for oil extraction by means of air injection and low-temperature oxidation and experiment device
  • Method for oil extraction by means of air injection and low-temperature oxidation and experiment device

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing.

[0013] see figure 1 .

[0014] An experimental device used in the method of air injection low-temperature oxidation oil recovery, mainly composed of a core or sand filling model 1, a constant temperature air bath 2, 3, an intermediate container 8, a booster 4, a liquid sampler 11, an oil-gas separator 6 and The tail gas receiver 7 and other parts are characterized in that: the core or sand filling model 1 is connected to the supercharger 4, the intermediate container 8 and the liquid sampler 11 through different valves, and the other end of the intermediate container 8 is connected to the supercharger 4 , the two ends of the core or sand packing model 1 are connected with the oil-gas separator 6 at the same time.

[0015] The present invention is provided with valves at the connecting parts of the core or sand filling model 1, constant temperature air baths 2 and 3, inter...

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Abstract

The invention relates to a method for oil extraction by means of air injection and low-temperature oxidation and an experiment device. The technical scheme comprises the steps of: firstly pressuring air to be more than 17MPa with a pressurizer, pushing thick oil into a core or a sand-packed model in a middle container, adjusting a valve, and taking air as injection liquid, to complete the simulation of oil displacement; adjusting the temperature of constant-temperature air bath to lead tap water in the middle container to reach more than 200 DEG C to be evaporated, generating water vapor, pushing the vapor into the core or the sand-packed model with the air pressure, and adjusting the valve to complete the simulation of oil displacement by means of steam drive or steam stimulation; and injecting the air into the core or the sand-packed model by the pressurizer, and keeping temperature at a certain time, so that the thick oil and the air low-temperature oxidized at low temperature, and a liquid sample adding device competes the simulation of the oil displacement by water in an offshore high oil reservoir. The invention has simple technology, low cost, enough gas source, simple structure, convenient and flexible use, and can simulate the operation of various oil displacements.

Description

technical field [0001] The invention relates to an air-injection low-temperature oxidation oil recovery method and an experimental device for onshore heavy oil steam huff and puff, steam flooding or offshore heavy oil water injection oil recovery. Background technique [0002] Since the exploitation of heavy oil in the 1960s, heavy oil recovery technology has developed by leaps and bounds. So far, heavy oil thermal recovery technology with steam huff and puff and steam flooding as the main production methods has been formed, as well as alkali flooding, steam flooding, etc. Heavy oil cold recovery technologies such as polymer flooding and miscible flooding. [0003] Thermal recovery technology mainly heats up heavy oil through different heating methods and heating media, thereby improving its fluidity. Due to the mining conditions, thermal recovery technology is mainly used in the recovery of heavy oil on land, and is rarely used in heavy oil at sea. Cold recovery of heavy o...

Claims

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Application Information

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IPC IPC(8): E21B43/18E21B43/24E21B43/16E21B43/20
Inventor 唐晓东崔盈贤张文卿大咏孟科全王萍萍
Owner SOUTHWEST PETROLEUM UNIV
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