CN2382837Y

CN2382837Y - Annular blending liquid viscosity reducing stirrer

Info

Publication number: CN2382837Y
Application number: CN 99224773
Authority: CN
Inventors: 舒耀敏; 张晓义
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-07
Filing date: 1999-08-07
Publication date: 2000-06-14
Anticipated expiration: 2009-08-07

Abstract

The utility model relates to an annular liquid blending viscosity reducing stirrer used in the production process of thick oil wells and wells containing waxy oil. The utility model is composed of an upper contact (1), a lower contact (23), a center centralizer (2), an upper valve compression spring (3), a lower valve compression spring (12), an upper valve seat (7), a lower valve seat (16), a well washing liquid outlet pipe (6), an impeller shaft (9), a forwards rotary impeller (8), a backwards rotary impeller (10), a liquid blending pipe (14), an oil-liquid separator (18), a transition contact (9), a valve ball cover (20), a bottom valve ball (21) and a bottom valve seat (22). In the process of working, the stirrer has the characteristic of extracting oil under pressure. Blended liquid is separated from an oil layer, which doesn't pollute the oil layer. The utility model is helpful to enhance the output of the thick oil wells and the wells containing waxy oil. The device can also be used for normal well washing and can gain fine effects.

Description

Annular space is mixed liquid viscosity reduction agitator

The utility model relates to a kind of downhole hardware that is used for viscous crude, content of wax oil well production: annular space is mixed liquid viscosity reduction agitator.

Viscous crude, content of wax oil well be because the oil stream viscosity height in its pit shaft is mobile poor, need take electrical heating or steam injection to heat and mix mode such as liquid viscosity reduction and improve its exploitation effect.Electrical heating, steam injection all are traditional, effective viscous crude, extraordinary oily mining type, and application is still more extensive at the scene at present, but there is energy consumption and the higher shortcoming of cost of production.Recently year part oil district, oil well applications mix liquid viscosity reduction mixing plant then because of it mixes viscosity reduction liquid from oil pipe, thereby may cause compacting or pollute, and structure, technology more complicated oil reservoir, it is further promoted is restricted.

The purpose of this utility model is to provide a kind of effectively viscosity reduction, improve that oily stream situation is unlikely again to have a negative impact and structure, the comparatively simple annular space of technology are mixed liquid viscosity reduction agitator to oil reservoir.

The purpose of this utility model is to realize like this.This kind annular space is mixed liquid viscosity reduction agitator by last, lower contact, outer tube, the fluid separator, on, following valve ball, on, following valve stage clip, on, press down spheroid, on, following valve seat, pressure ball body centralizer, just, the reverse rotation impeller, impeller shaft, the center centralizer, the well-flushing drain pipe, mix liquid pipe and end valve ball, end valve ball seat, the valve ball cover, transit joint is formed, its structure, the assembling feature is as follows: the outer tube upper end is connected to top connection by screw thread, the lower end is connected to the fluid separator, fluid separator lower end is connected to transit joint, and it is connected to valve ball cover and lower contact down successively; From top to bottom successively to be provided with well-flushing drain pipe, impeller shaft with being threaded, to mix the liquid pipe, mix liquid pipe lower end and link to each other with screw thread in the outer tube with the fluid separator; Well-flushing drain pipe upper end is with the center centralizer that has been threaded, be set with its upper end of forward and reverse rotary blade on the impeller shaft and be connected with valve seat, mix liquid pipe internal upper part and be provided with the pressure ball centralizer, the bottom is provided with down valve seat, valve ball, upper pressing ball body, last valve stage clip and following valve ball is housed respectively on the upper and lower valve seat, presses down spheroid, following valve stage clip; End valve seat is housed in the lower contact, which is provided with end valve ball.During use, this device is installed under the oil well pump with pumping pipe string down to the oil reservoir top, the packer on the pumping pipe string is sealed the oil reservoir it under, makes itself and oil casing annular space isolation.During the pumpingh well ordinary production, crude oil is up from packer below tubing string pipe lower tail, the jack-up valve ball, again through the fluid separator in the agitator to the agitator cavity in, by oil well pump suction pump barrel and take away.When needs are mixed liquid, add dilution from the oil jacket annular space, liquid level rose after dilution arrived packer, arrived one way valve valve ball below through the liquid hole of mixing of fluid separator; When annulus liquid level rises to certain altitude and makes valve ball below pressure greater than spring pressure, with valve ball jack-up, dilution penetrates the crude oil that upwards flows and is cut to tiny fragment from mixing liquid pipe side spurt hole with certain pressure and speed ejection, realizes that fluid tentatively mixes; Mixed liquor upwards flows with certain speed along with the suction of oil well pump, rotates through the impeller and the impeller of positive and negative direction rotation, and mixed liquor is further mixed, and reaches and dilutes viscosity reduction preferably or separate the wax effect.

The utility model modern design, rational in infrastructure, job execution is easy, cost of production is low, has the negative pressure production characteristics during work of this kind agitator, and liquid and zonal isolation are mixed by institute, polluted reservoir not, help improving viscous crude, waxy oil well production, when well deliverability is not enough, more can manifest its good result especially.This device also can be used for normal well-flushing, and can obtain good result.

Accompanying drawing is the utility model general structure schematic diagram.

Below in conjunction with accompanying drawing enforcement of the present utility model is described further.

As shown in the figure, the utility model by upper and lower joint 1,23, center centralizer 2, upper and lower valve stage clip 3,12, upper and lower pressure ball body 4,13, pressure ball body centralizer 11, outer tube 17, upper and lower valve ball 5,15, upper and

lower valve seat

7,16, well-flushing drain pipe 6, impeller shaft 9, forward and reverse rotary blade 8,10, mix liquid pipe 14, fluid separator 18, transit joint 19, valve ball cover 20, end valve ball 21, end valve seat 22 and form, its general shape is of a size of Ф 114 * 1200-1400mm.Wherein, center centralizer 2 is a hollow wheel-shaped body, and its top is uniformly distributed with 6 approximate rectangular bossy bodies along the circumference, and lower outer diameter is less and have a pin thread.Well-flushing drain pipe 6 upper and lower ends are with negative thread respectively, are uniformly distributed with 4 strip fluid holes on the tube wall along the circumference.Impeller shaft 9 is a cylinder, and its inside and outside disc in upper end is all threaded, and the lower end periphery is threaded, and the middle part periphery has a boss.Forward and reverse rotary blade 8,10 is the open circles ring body, is respectively equipped with the banded impeller of multi-disc arc strip on its periphery, and the two impeller direction is opposite, and the former is clockwise, the latter is rotated counterclockwise.It is bigger to mix inside and outside footpath, liquid pipe 14 tops, and the inner headed face upper end is threaded, the round platform that the screw thread below has a device pressure ball centralizer to use, and negative thread is established in the lower end, is evenly equipped with a plurality of spray holes on the tube wall of middle part.Fluid separator 18 is that a top external diameter is less, tube wall is thin, middle part, lower outer diameter is big, tube wall is thicker cylinder, its inside and outside circle in upper end is all threaded, the lower end periphery is threaded, tube wall upper edge, middle part is evenly distributed in 6 or 12 Ф, 12 side direction inlet openings, major diameter body upper edge is evenly distributed in 6 vertical Ф 18 oil throughs, inlet opening and oil through are isolated mutually, are not communicated with mutually.

Claims

1, a kind of annular space is mixed liquid viscosity reduction agitator, by last, lower contact (1), (23), center centralizer (2), on, following valve stage clip (3), (12), on, press down spheroid (4), (13), pressure ball centralizer (11), on, following valve ball (5), (15), on, following valve seat (7), (16), outer tube (17), valve ball cover (20), end valve ball (21), end valve seat (22) is formed, it is characterized in that: outer tube (17) upper end is connected to top connection (1) by screw thread, the lower end is connected to fluid separator (18), fluid separator (18) lower end is connected to transit joint (19), and it is connected to valve ball cover (20) and lower contact (23) down successively; Be connected with well-flushing drain pipe (6), impeller shaft (9) in the outer tube (17) from top to bottom in turn, mix liquid pipe (14), mix liquid pipe (14) lower end and link to each other with screw thread with fluid separator (18); Well-flushing drain pipe (6) upper end is with the center centralizer (2) that has been threaded, be set with forward and reverse rotary blade (8), (10) on the impeller shaft (9), its upper end is connected with valve seat (7), mix liquid pipe (14) top and be provided with pressure ball body centralizer (11), the bottom is provided with valve seat (16), and upper and lower valve ball (5), (15), upper and lower pressure ball body (4), (13), upper and lower valve stage clip (3), (12) are housed respectively on upper and lower valve seat (7), (16); End valve seat (22) is housed in the lower contact (23), which is provided with end valve ball (21).

2, annular space according to claim 1 is mixed liquid viscosity reduction agitator, it is characterized in that, center centralizer (2) is a hollow wheel-shaped body, and its top is uniformly distributed with 6 approximate rectangular bossy bodies along the circumference, and lower outer diameter is less and have a pin thread.

3, annular space according to claim 1 is mixed liquid viscosity reduction agitator, it is characterized in that, impeller shaft (9) is a cylinder, and the inside and outside disc in its upper end is all threaded, and the lower end periphery is threaded, and the middle part periphery has a boss.

4, annular space according to claim 1 is mixed liquid viscosity reduction agitator, it is characterized in that forward and reverse rotary blade (8), (10) are the open circles ring body, be respectively equipped with the banded impeller of multi-disc arc strip on its periphery, the two impeller direction is opposite, and the former is clockwise, the latter is rotated counterclockwise.

5, annular space according to claim 1 is mixed liquid viscosity reduction agitator, it is characterized in that, fluid separator (18) is that a top external diameter is less, tube wall is thin, middle part, lower outer diameter is big, tube wall is thicker cylinder, its inside and outside disc in upper end is all threaded, the lower end periphery is threaded, and tube wall upper edge, middle part is evenly distributed in 6 or 12 side direction inlet openings, and major diameter body upper edge is evenly distributed in 6 vertical oil throughs, inlet opening and oil through are isolated mutually, are not communicated with mutually.