阅读说明：本技术 一种可调节油液粘度的采油管柱 (Oil production pipe capable of adjusting oil viscosity ) 是由 张永华 孙志田 张宪文 康得胜 于 2019-09-23 设计创作，主要内容包括：本发明提供一种可调节油液粘度的采油管柱,包括套管,其特征在于,套管的上端设有连接头,套管的下端设有滤砂装置,且套管与滤砂装置之间设有密封装置,套管的内部同轴设有抽油管,抽油管的上端与连接头上设有的抽油泵相连,抽油管的下端伸入到滤砂装置的内部并设有第一过滤网,抽油管的外壁与套管的内壁之间设有多个扶正块,滤砂装置的内部设有搅拌装置,滤砂装置的底部设有进油口,且进油口处设有第二过滤网,抽油管的内壁上设有防腐内衬,套管的外壁上设有二氧化硅玻纤布,二氧化硅玻纤布的外侧设有纳米气凝胶毛毡层。(The invention provides an oil production pipe column capable of adjusting oil viscosity, which comprises a sleeve and is characterized in that the upper end of the sleeve is provided with a connector, the lower end of the sleeve is provided with a sand filtering device, a sealing device is arranged between the sleeve and the sand filtering device, an oil pumping pipe is coaxially arranged inside the sleeve, the upper end of the oil pumping pipe is connected with an oil well pump arranged on the connector, the lower end of the oil pumping pipe extends into the sand filtering device and is provided with a first filter screen, a plurality of centering blocks are arranged between the outer wall of the oil pumping pipe and the inner wall of the sleeve, a stirring device is arranged inside the sand filtering device, the bottom of the sand filtering device is provided with an oil inlet, a second filter screen is arranged at the oil inlet, the inner wall of the oil pumping pipe is provided with an anticorrosive lining, the outer wall of the sleeve is provided with silica glass fabric.)

1. An oil production pipe capable of adjusting oil viscosity comprises a sleeve (1) and is characterized in that a connector (2) is arranged at the upper end of the sleeve (1), a sand filtering device (3) is arranged at the lower end of the sleeve (1), a sealing device is arranged between the sleeve (1) and the sand filtering device (3), an oil pumping pipe (4) is coaxially arranged inside the sleeve (1), the upper end of the oil pumping pipe (4) is connected with an oil well pump (5) arranged on the connector (2), the lower end of the oil pumping pipe (4) extends into the sand filtering device (3) and is provided with a first filter screen (6), a plurality of centering blocks (7) are arranged between the outer wall of the oil pumping pipe (4) and the inner wall of the sleeve (1), a stirring device is arranged inside the sand filtering device (3), an oil inlet (8) is arranged at the bottom of the sand filtering device (3), and a second filter screen (9) is arranged at the oil inlet (8), an anti-corrosion lining (10) is arranged on the inner wall of the oil pumping pipe (4), silica glass fiber cloth (11) is arranged on the outer wall of the sleeve (1), and a nano aerogel felt layer (12) is arranged on the outer side of the silica glass fiber cloth (11).

2. The oil production string capable of adjusting the oil viscosity according to claim 1, wherein the sealing device is a rubber sealing sleeve (13) in threaded connection with the upper end of the sand filtering device (3), the inner side of the rubber sealing sleeve (13) is attached to the outer side wall of the casing (1), the inner side of the rubber sealing sleeve (13) is provided with a plurality of arc-shaped protrusions (14), the outer side wall of the casing (1) is correspondingly provided with a plurality of accommodating grooves matched with the arc-shaped protrusions (14), and the bottom of the rubber sealing sleeve (13) is further provided with a first annular ring (15).

3. The oil production string capable of adjusting the oil viscosity according to claim 2, wherein the first annular ring (15) is further provided with a protrusion (16) on the inner side, the outer wall of the oil extraction pipe (4) is provided with a groove matched with the protrusion (16), and the protrusion (16) is embedded in the groove.

4. The oil production string capable of adjusting the oil viscosity according to claim 2, wherein a second annular ring (17) is arranged at the top of the rubber sealing sleeve (13), and the second annular ring (17) abuts against the upper end of the sand filter (3).

5. The oil production string capable of adjusting the oil viscosity according to claim 1, wherein the stirring device comprises a mounting rod (18) horizontally arranged in the sand filtering device (3), a plurality of rotating shafts are rotatably arranged on the mounting rod (18), rotating impellers (19) are fixed on the rotating shafts, and the blades of the adjacent rotating impellers (19) are in different orientations.

6. The oil production string capable of adjusting the oil viscosity according to claim 1, wherein a plurality of flow baffles (20) are further arranged above the internal stirring device of the sand filtering device (3), and the flow baffles (20) are alternately arranged on the inner walls of two sides of the sand filtering device (3).

7. The oil production string capable of adjusting the oil viscosity according to claim 1, wherein the anti-corrosion lining (10) is made of polytetrafluoroethylene material, and the anti-corrosion lining (10) is coated on the inner wall of the oil extraction pipe (4) in an electrostatic spraying manner, and the thickness of the anti-corrosion lining is 30-150 μm.

8. The oil production pipe capable of adjusting oil viscosity according to claim 1, wherein a heating layer (21) is arranged between the silica glass fiber cloth (11) and the sleeve (1), an electric heating pipe is arranged inside the heating layer (21) in a spiral manner, a heat conduction layer (22) is arranged between the heating layer (21) and the sleeve (1), and the heat conduction layer (22) is made of carbon fiber materials.

Technical Field

The invention relates to the technical field of oil extraction, in particular to an oil extraction pipe column capable of adjusting oil viscosity.

Background

With the continuous development of social economy and the continuous improvement of the production level of enterprises, the demand of the whole society for resources is larger and larger, especially the demand of petroleum is larger and larger, because the petroleum is stored underground, when the petroleum is exploited, an oil well must be arranged, the oil exploitation project is a general term of various engineering technical measures which are taken for an oil deposit through a production well and an injection well according to the exploitation targets in the oil field exploitation process, and is used as a comprehensive application subject which researches the theory of various engineering technical measures, an engineering design method and an implementation technology which can economically and effectively act on the oil deposit so as to improve the yield of the oil well and the recovery ratio of crude oil, the task of the oil exploitation project is to enable the oil and the gas to smoothly flow into the well through a series of engineering technical measures which can act on the oil deposit, the well is efficiently lifted to the ground for separating height and metering, and the aim of economically and effectively improving the recovery ratio of the oil well and the crude, from the viewpoint of system engineering, the oil extraction engineering is an important subsystem in the central position in a large oil field exploitation system, is closely connected with oil deposit engineering and oil and gas gathering and transportation engineering in an oil field, faces various oil deposits with different geological conditions and dynamic and continuous changes, and can obtain good economic effect only by correctly selecting and implementing a technically feasible and economically reasonable engineering technical scheme according to the geological conditions and the dynamic changes of the oil deposits.

Under the influence of geological conditions, the underground structure of some oil fields is complex, the oil fields belong to multiple oil-gas regions with various oil reservoir types, multiple structures, multiple strata series and multiple crude oil properties, the underground sand content is large, and the produced crude oil contains a large amount of silt, so that the oil production string is seriously abraded and easy to block, the service life of the oil production string is shortened, and therefore, sand filtering devices are arranged on the oil production string mostly to filter the silt; but the existing sand filtering device and the oil production pipe are not good enough in sealing property and easy to generate oil leakage phenomenon; and the oil is difficult to be exploited due to high viscosity of the oil during oil exploitation, and the using effect is poor.

Disclosure of Invention

Aiming at the technical problems, the invention provides the oil production pipe capable of adjusting the viscosity of the oil.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an oil production pipe column of adjustable fluid viscosity, the motor comprises a sleeve pipe, a serial communication port, sheathed tube upper end is equipped with the connector, sheathed tube lower extreme is equipped with the sand filtering device, and be equipped with sealing device between sleeve pipe and the sand filtering device, sheathed tube inside coaxial is equipped with takes out oil pipe, the oil-well pump that is equipped with on oil pipe's the upper end and the connector links to each other, take out oil pipe's lower extreme and stretch into the inside of sand filtering device and be equipped with first filter screen, be equipped with a plurality of righting pieces between oil pipe's the outer wall and the sheathed tube inner wall, the inside of sand filtering device is equipped with agitating unit, the bottom of sand filtering device is equipped with the oil inlet, and oil inlet department is equipped with the second filter screen, be equipped with anticorrosive inside lining on oil pipe's the inner wall, be.

The sealing device is a rubber sealing sleeve in threaded connection with the upper end of the sand filtering device, the inner side of the rubber sealing sleeve is attached to the outer side wall of the sleeve, a plurality of arc-shaped protrusions are arranged on the inner side of the rubber sealing sleeve, a plurality of accommodating grooves matched with the arc-shaped protrusions are correspondingly arranged on the outer side wall of the sleeve, and a first annular ring is further arranged at the bottom of the rubber sealing sleeve.

The inner side of the first annular ring is also provided with a bulge, the outer wall of the oil pumping pipe is provided with a groove matched with the bulge, and the bulge is embedded in the groove.

And a second annular ring is arranged at the top of the rubber sealing sleeve and abuts against the upper end of the sand filtering device.

Agitating unit includes that the level sets up the installation pole in the sand filtering device, rotates on the installation pole and is equipped with a plurality of pivots, is fixed with rotary impeller in the pivot, and the orientation of the blade of adjacent rotary impeller is different.

And a plurality of flow baffles are also arranged above the internal stirring device of the sand filtering device and are arranged on the inner walls of the two sides of the sand filtering device in a staggered manner.

The anticorrosive lining is made of polytetrafluoroethylene materials, is coated on the inner wall of the oil pumping pipe in an electrostatic spraying mode and is 30-150 mu m thick.

Be equipped with the zone of heating between fine cloth of silica glass and the sleeve pipe, the inside of zone of heating is equipped with the electric heating pipe of spiral setting, is equipped with the heat-conducting layer between zone of heating and the sleeve pipe, and the heat-conducting layer adopts carbon fiber material preparation.

Compared with the prior art, the invention has the beneficial effects that: the rubber sealing sleeve arranged between the sleeve and the sand filtering device can seal a gap between the sleeve and the sand filtering device and can also connect the sleeve and the sand filtering device, the arc-shaped bulge, the first annular ring, the second annular ring and the bulge arranged on the rubber sealing sleeve can further wrap the outer part of the sleeve, the rubber sealing sleeve is prevented from sliding off due to long-time use, and meanwhile, the sealing performance is enhanced due to the threaded connection between the rubber sealing sleeve and the sand filtering device; in addition, the arranged first annular ring and the arranged bulge also seal the oil pumping pipe and the sleeve, so that oil is prevented from entering the sleeve; the rotatory impeller that sets up can stir fluid when fluid enters into the inside of straining sand device from the oil inlet, has avoided because of fluid is too thick and brings the influence for the oil recovery, and the result of use is better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of A of FIG. 1 according to the present invention;

in the figure: 1. a sleeve; 2. a connector; 3. a sand filtering device; 4. an oil pumping pipe; 5. an oil well pump; 6. a first filter screen; 7. a righting block; 8. an oil inlet; 9. a second filter screen; 10. an anticorrosive lining; 11. silica glass fabric; 12. a nano aerogel felt layer; 13. a rubber sealing sleeve; 14. an arc-shaped bulge; 15. a first annular ring; 16. a protrusion; 17. a second annular ring; 18. mounting a rod; 19. rotating the impeller; 20. a flow baffle plate; 21. a heating layer; 22. a thermally conductive layer.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in the figure: