Single-well split-type heating multifunctional storage tank device

Abstract

The invention relates to a single-well split-type heating multifunctional storage tank device. The technical scheme of the invention is as follows: the single-well split-type heating multifunctional storage tank device mainly comprises a heating furnace unit and a storage tank unit which are connected by medium circulation pipes and a natural gas pipeline, a safe distance is arranged between the heating furnace unit and the storage tank unit, a heating coil pipe outlet in a furnace body of the heating furnace unit is in a double-flow manner, one path of the two flows is connected with a heat exchange coil pipe in a storage tank through a high-temperature gate valve, and the other path of the two flows is connected with a well shaft lifting heating circulating system through the high-temperature gate valve. The single-well split-type heating multifunctional storage tank device disclosed by the invention has the advantages that the heating furnace unit and the storage tank unite are designed to be of a split structure so that a potential safety hazard in the production process is eliminated, and requirements on discharging oil and water and cleaning pipes by utilizing self oil-gas pressure in the storage tank are met; in addition, the heat exchange coil pipe in the storage tank unit can be flexibly arranged so that heat exchange area is enlarged, crude oil in the storage tank is heated uniformly, a low-temperature area of the crude oil in the storage tank is reduced and the heating time is shortened; in addition, due to a special design of a Y-shaped oil inlet separation pipe, the oil-gas separation effect is improved.

Description

technical field [0001] The invention relates to a heating storage tank device in oil field production, in particular to a single well split heating multifunctional storage tank device used on a single well that cannot enter the gathering and transportation pipeline network in oil field production. Background technique [0002] At present, although the multi-functional tanks used for single well oil pulling in oil fields make up for the defect that the elevated atmospheric pressure tanks cannot use the oil and gas pressure in the tank to unload oil, there are still the following defects in the operation process: (1) Multi-functional tank storage and heating The integrated structure brings safety hazards to the later production. The U-shaped torch pipe used to heat crude oil in the multi-functional tank directly heats crude oil, which has serious safety hazards. The U-shaped torch has been in operation for a long time, and the smoke pipe is easy to corrode. Perforation, causin...

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Problems solved by technology

[0002] At present, although the multi-functional tanks used for single well oil pulling in oil fields make up for the defect that the elevated atmospheric pressure tanks cannot use the oil and gas pressure in the tank to unload oil, there are still the following defects in the operation process: (1) Multi-functional tank storage and heating The integrated structure brings safety hazards to the later production. The U-shaped torch pipe used to heat crude oil in the multi-functional tank directly heats crude oil, which has serious safety hazards. The U-shaped torch has been in operation for a long time, and the smoke pipe is easy to corrode. perforation, causing crude oil to overflow into the flue, causing a fire

(2) The U-shaped fire pipe is designed at the bottom of the tank, which not only has a small heat transfer area, but also because of the poor thermal conductivity of crude oil, the heat transfer is uneven and the heat transfer speed is slow, and the temperature of the lower oil-water (mostly water) mixture reaches the oil filling temperature After that, the temperature of the upper part of the crude oil still does not reach the filling temperature for a long time, and there are many low-temperature areas of the crude oil in the tank, which affects the filling efficiency

(3) The structure of the gas distribution bag is simple, resulting in unclean gas, fire failure, and potential safety hazards

(4) The oil inlet pipe does not have the oil-gas separation function or the separation function is poor

(5) The tank cleaning method is dangerous and complicated. When cleaning the tank, the operator must enter the tank to clean the sand. The residual combustible gas or toxic gas in the tank will bring serious safety hazards to the tank cleaning

[0003] In addition, for oil wells that use hollow sucker rods and hot water circulation heating to solve the wellbore lift problem of waxy wells, since the multi-functional tank uses the fire tube to directly heat crude oil, the heating system cannot be shared, and a new heating system needs to be built. Not only increase investment, waste fuel, but also increase the workload of operators

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