CN202497775U - Three-stage filter storage tank for well flushing fluid in downhole operations - Google Patents

Abstract

A three-stage filtering liquid storage tank for a downhole operation well-flushing liquid is applied to storing the well-flushing liquid in oilfield workover construction. The liquid storage tank is a cuboid tank welded by steel plates, and the inner end part of the well washing liquid inlet is connected with a strong magnetic iron chip filter; a baffle is transversely welded in the liquid storage tank, and the baffle divides the liquid storage tank into a liquid storage chamber and a settling filter chamber; a round hole is formed in the middle of the baffle; a partition board is transversely welded in the sedimentation filter chamber; a weir plate is transversely welded on the sedimentation and filtration chamber; a filter screen is transversely fixed on the settling filter chamber; the lower part of the other end of the liquid storage tank is welded with a well-flushing liquid outlet. The effect is as follows: collecting iron particles by a strong magnetic iron chip filter; the baffle and the weir plate change the direction and the flow speed of the liquid flow and reduce, and impurities contained in the liquid are settled; the filter screen filters further, and clean well-flushing liquid flows out through the outlet. Reducing the impurity content in the well-flushing liquid.

Description

Underground work flushing fluid three-stage filtration fluid reservoir

Technical field

The utility model relates to oil field well workover technical field of construction, and the flushing fluid storage tank during particularly a kind of the construction is a kind of underground work flushing fluid three-stage filtration fluid reservoir.

Background technology

At present, flushing fluid is simple precipitation in fluid reservoir, wherein carries out impurity such as silt, iron filings in a large amount of oil-water wells; Can't timely and effective separating and filtering, flushing fluid water quality can not satisfy the construction needs, directly pumps in the well; Often cause the stuck damages of drilling tool such as oil layer pollution and turbine brill, incur loss through delay the duration.

The utility model content

The purpose of the utility model is: a kind of underground work flushing fluid three-stage filtration fluid reservoir is provided, through three-stage filtration, reduces impurity content in the flushing fluid, make water quality meet construction requirement.

The technical scheme that the utility model adopts is: underground work flushing fluid three-stage filtration fluid reservoir comprises fluid reservoir, flushing fluid inlet, strong magnet bits filter, baffle plate, dividing plate, weir plate, filter screen and flushing fluid outlet; It is characterized in that: fluid reservoir is the cuboid jar of steel plate welding, is fixed with the flushing fluid inlet on an end top of fluid reservoir, and the inner end that enters the mouth at flushing fluid is connected with strong magnet bits filter; Can the iron filings adsorbing separation in the liquid be arranged getting into fluid reservoir, iron filings can not get in the fluid reservoir.Transverse weld has baffle plate in fluid reservoir, and baffle plate is with being divided into fluid reservoir and sedimentation filter chamber two parts in the fluid reservoir; There is circular hole at middle part at baffle plate, and the liquid of fluid reservoir can flow into the sedimentation filter chamber through circular hole.Transverse weld has dividing plate in the sedimentation filter chamber, and the distance of 100～300mm is arranged at the lower end of dividing plate and fluid reservoir bottom, and liquid can flow through from the bottom of dividing plate.Transverse weld has weir plate in the sedimentation filter chamber, the lower end of weir plate and the welding of fluid reservoir bottom, and the height of weir plate is 40～60% of a fluid reservoir height, liquid can be from the overhead stream mistake of weir plate.Crosswise fixed has filter screen in the sedimentation filter chamber; Be welded with the flushing fluid outlet in the other end bottom of fluid reservoir.

On baffle plate, be welded with pipeline, pipeline welding is on the circular hole of baffle plate middle part, and pipeline is a bend pipe, and the inlet of pipeline is lower than baffle plate middle part circular hole.

Described filter screen adopts two-layer 60 purpose copper mesh, and filter screen is skewed, and the angle that filter screen tilts is between 10～20 degree.Impurity particle greater than 245um is isolated and sedimentation by copper mesh.

The beneficial effect of the utility model: the utility model underground work flushing fluid three-stage filtration fluid reservoir, strong magnet bits filter is attached to collects the irony particle; Liquid makes liquid flow change direction through baffle plate rear bulkhead and weir plate, and flow velocity reduces and the variation of direction, makes the impurity particle that contains in the liquid at the bottom of sedimentation under the effect of gravity is trapped in jar; Liquid further filters through filter screen, and the flushing fluid of cleaning flows out through outlet.Reduce impurity content in the flushing fluid, make water quality meet construction requirement.

Description of drawings

Fig. 1 is the utility model underground work flushing fluid three-stage filtration fluid reservoir schematic cross section.

Among the figure, 1-fluid reservoir, 2-flushing fluid inlet, 3-strong magnet bits filter, 4-pipeline, 5-baffle plate, 6-dividing plate, 7-weir plate, 8-filter screen, the outlet of 9-flushing fluid.

The specific embodiment

Embodiment 1: with a underground work flushing fluid three-stage filtration fluid reservoir is example, and the utility model is done further explain.

Consult Fig. 1.The utility model underground work flushing fluid three-stage filtration fluid reservoir comprises fluid reservoir 1, flushing fluid inlet 2, strong magnet bits filter 3, baffle plate 5, dividing plate 6, weir plate 7, filter screen 8 and flushing fluid outlet 9.

Fluid reservoir 1 is the cuboid jar of steel plate welding, and the inner length of fluid reservoir 1 is 2.5m, and width is 1.55m, highly is 1.2m.Be fixed with a flushing fluid inlet 2 on an end top of fluid reservoir 1, be connected with strong magnet bits filter 3 at the inner end of flushing fluid inlet 2.Transverse weld has a baffle plate 5 in fluid reservoir 1, and baffle plate 5 is with being divided into fluid reservoir and sedimentation filter chamber two parts in the fluid reservoir 1.Three circular holes of one row are arranged at the middle part of baffle plate 5.On baffle plate 5, be welded with three pipelines 4, pipeline 4 is welded on the baffle plate 5 middle part circular holes, and pipeline 4 is a bend pipe, and the inlet of pipeline 4 is lower than baffle plate 5 middle part circular holes.Transverse weld has dividing plate 6 in the sedimentation filter chamber, and the distance of 250mm is arranged at the lower end of dividing plate 6 and fluid reservoir 1 bottom; Transverse weld has weir plate 7 in the sedimentation filter chamber, the lower end of weir plate 7 and the welding of fluid reservoir 1 bottom, and the height of weir plate 7 is 45% (540mm) of fluid reservoir 1 height; Crosswise fixed has filter screen 8 in the sedimentation filter chamber.Filter screen 8 adopts two-layer 60 purpose copper mesh, and filter screen 8 is skewed, and the angle that filter screen 8 tilts is 15 degree.Be welded with a flushing fluid outlet 9 in the other end bottom of fluid reservoir 1.

Claims (3)

1. A three-stage filter storage tank for well cleaning fluid in downhole operations, comprising a liquid storage tank (1), a well cleaning fluid inlet (2), a strong magnetic debris filter (3), a baffle plate (5), and a partition ( 6), weir plate (7), filter screen (8) and well flushing fluid outlet (9); it is characterized in that: the liquid storage tank (1) is a rectangular parallelepiped tank welded by steel plate, at one end of the liquid storage tank (1) The upper part is fixed with a well flushing fluid inlet (2), and a strong magnetic chip filter (3) is connected to the inner end of the well flushing fluid inlet (2); a baffle (5) is welded laterally in the liquid storage tank (1) , the baffle plate (5) divides the liquid storage tank (1) into two parts: the liquid storage chamber and the sedimentation filter chamber; there is a round hole in the middle of the baffle plate (5); a partition plate (6) is welded laterally in the sedimentation filter chamber , the lower end of the partition (6) has a distance of 100-300 mm from the bottom of the liquid storage tank (1); a weir plate (7) is welded laterally in the sedimentation filter chamber, and the lower end of the weir plate (7) is connected to the liquid storage tank (1) The bottom is welded, and the height of the weir plate (7) is 40% to 60% of the height of the liquid storage tank (1); a filter screen (8) is fixed horizontally in the sedimentation filter chamber; Flushing fluid outlet (9). 2. The three-stage filter storage tank for well cleaning fluid in downhole operations according to claim 1, characterized in that: a pipeline (4) is welded on the baffle (5), and the pipeline (4) is welded to the baffle (5) On the circular hole in the middle part, the pipeline (4) is an elbow, and the entrance of the pipeline (4) is lower than the circular hole in the middle part of the baffle plate (5). 3. The three-stage filter storage tank for well cleaning fluid in downhole operations according to claim 1, characterized in that: the filter screen (8) adopts two layers of 60-mesh copper mesh, and the filter screen (8) is inclined, The angle of inclination of the filter screen (8) is between 10 and 20 degrees.