CN214247238U - Tubular column suitable for high temperature ultra-deep well - Google Patents

Abstract

A pipe column suitable for a high-temperature ultra-deep well comprises a pump barrel and an oil production pipe; the oil production pipe sets up in the inside of pump barrel and with the same axle center of pump barrel, oil production pipe is provided with the hollow layer with the pump barrel, and the pump barrel is inside to be provided with a plurality of fastening components along vertically side by side, the top of pump barrel is connected with the top connection, oil production pipe's top is connected with the oil suction pump, oil production pipe's bottom intercommunication has the lower extreme pipe, the bottom of lower extreme pipe is provided with one-way feed liquor valve, the fixed filter tube that is provided with in oil production pipe bottom, and in the whole filter tube was arranged in to the lower extreme pipe, the upper end and the oil production pipe sealing connection of filter tube, it is provided with a plurality of openings to surround on the outer wall of filter tube, all be provided with fine and close filter screen in a plurality of openings, be connected with the prefilter screen between the inner wall of filter tube and pump barrel. The utility model discloses a preliminary filter screen and the fine and close filter screen that set up can progressively filter impurity and grit in the crude oil to guarantee the purity of crude oil, can avoid the grit to form in the oil production pipe simultaneously and pile up and then cause the oil production pipe to block up.

Description

Tubular column suitable for high temperature ultra-deep well

Technical Field

The utility model relates to an oil gas field development technical field especially relates to a tubular column suitable for high temperature ultra-deep well.

Background

Under the influence of geological conditions, some oil fields have complicated underground structures, belong to multiple oil and gas areas with various oil reservoir types, multiple structures, multiple strata systems and multiple crude oil properties, and underground oil reservoirs contain impurities such as sand gravel.

In the process of crude oil exploitation, gravel in crude oil can enter an oil extraction pipe along with the crude oil, the pumped gravel can cause abrasion on the surface of the oil extraction pipe column, the oil extraction pipe is easy to block, the normal operation of oil extraction work is influenced, the service life of the pipe column is shortened, and the crude oil with the gravel is required to be filtered, so that the later-stage processing efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to solve the technical problems existing in the background technology, the utility model provides a tubular column suitable for a high-temperature ultra-deep well, which can gradually filter impurities and gravel in crude oil through a primary filter screen and a fine filter screen so as to ensure the purity of the crude oil, and can simultaneously avoid the gravel from forming accumulation in an oil production pipe and further causing the blockage of the oil production pipe; the stability of oil production pipe in the pump barrel can be promoted through the fastening assembly who sets up, prevents the bending that oil production pipe leads to because of the overlength.

(II) technical scheme

The utility model provides a pipe column suitable for a high-temperature ultra-deep well, which comprises a pump barrel and an oil extraction pipe; the oil production pipe sets up in the inside of pump barrel and with the same axle center of pump barrel, oil production pipe is provided with the hollow layer with the pump barrel, and the pump barrel is inside to be provided with a plurality of fastening components along vertically side by side, the top of pump barrel is connected with the top connection, oil production pipe's top is connected with the oil suction pump, oil production pipe's bottom intercommunication has the lower extreme pipe, the bottom of lower extreme pipe is provided with one-way feed liquor valve, the fixed filter tube that is provided with in oil production pipe bottom, and in the whole filter tube was arranged in to the lower extreme pipe, the upper end and the oil production pipe sealing connection of filter tube, it is provided with a plurality of openings to surround on the outer wall of filter tube, all be provided with fine and close filter screen in a plurality of openings, be connected with the prefilter screen between the inner wall of filter tube and pump barrel.

Preferably, fastening components include interior retainer plate, outer retainer plate and stiffener, and interior retainer plate pastes tightly with oil production pipe's outer wall mutually, and outer retainer plate pastes tightly with the inner wall of pump barrel mutually, and the stiffener has a plurality ofly and all fixed setting including between retainer plate and the outer retainer plate, and threaded connection has fastening screw on the outer retainer plate, fastening screw's tip pass outer retainer plate and with the inner wall threaded connection of pump barrel.

Preferably, the primary filter screen is arranged at the bottom end of the fine filter screen.

Preferably, the bottom of fine filter screen is located the bottom surface top of filter tube, and the inside bottom of filter tube is provided with a plurality of activated carbon plates side by side, has the interval space between two adjacent activated carbon plates from top to bottom, and it has a plurality of adsorption holes to distribute on the activated carbon plate, and the adsorption hole on the activated carbon plate of upper end is greater than the adsorption hole on the activated carbon plate of lower extreme.

Preferably, the top end of the outer wall of the pump barrel is provided with a sealing ring, and the sealing ring is provided with an annular sealing groove for embedding the bottom end of the upper joint.

Preferably, the surfaces of the pump barrel, the oil production pipe, the filter pipe and the lower end pipe are all coated with high-temperature resistant coating.

Preferably, the primary filter screen and the fine filter screen are both made of stainless steel mesh.

Compared with the prior art, the above technical scheme of the utility model following profitable technological effect has: impurities and gravel in the crude oil can be gradually filtered through the arranged primary filter screen and the fine filter screen, so that the purity of the crude oil is ensured, and meanwhile, the phenomenon that the gravel is accumulated in a production pipe to cause the blockage of the production pipe can be avoided; the stability of oil production pipe in the pump barrel can be promoted through the fastening assembly who sets up, prevents the bending that oil production pipe leads to because of the overlength.

Drawings

Fig. 1 is a schematic structural diagram of a pipe column suitable for a high-temperature ultra-deep well according to the present invention.

Fig. 2 is an enlarged schematic structural view at a in fig. 1.

Reference numerals: 1. a pump barrel; 2. a production string; 3. an upper joint; 4. an oil suction pump; 5. a seal ring; 6. a hollow layer; 7. a filter tube; 8. a primary filter screen; 9. a fine filter screen; 10. a lower end tube; 11. a one-way liquid inlet valve; 12. an annular seal groove; 13. an inner fixed ring; 14. an outer retainer ring; 15. a reinforcing bar; 16. fastening screws; 17. an activated carbon plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-2, the utility model provides a tubular column suitable for high temperature ultra-deep well, which comprises a pump barrel 1 and an oil production pipe 2; oil production pipe 2 sets up in the inside of pump barrel 1 and with the coaxial center of pump barrel 1, oil production pipe 2 is provided with hollow layer 6 with pump barrel 1, and pump barrel 1 is inside to be provided with a plurality of fastening components side by side along vertically, the top of pump barrel 1 is connected with top connection 3, oil production pipe 2's top is connected with oil suction pump 4, oil production pipe 2's bottom intercommunication has lower extreme pipe 10, the bottom of lower extreme pipe 10 is provided with one-way feed liquor valve 11, 2 bottom mounting in oil production pipe is provided with filter tube 7, and lower extreme pipe 10 arranges in whole filter tube 7, the upper end and the oil production pipe 2 sealing connection of filter tube 7, it is provided with a plurality of openings around on the outer wall of filter tube 7, all be provided with fine and close filter screen 9 in a plurality of openings, be connected with preliminary filter screen 8 between the inner wall of filter tube 7 and pump barrel 1.

In an alternative embodiment, the fastening assembly comprises an inner fixing ring 13, an outer fixing ring 14 and a reinforcing rod 15, wherein the inner fixing ring 13 is tightly attached to the outer wall of the oil production pipe 2, the outer fixing ring 14 is tightly attached to the inner wall of the pump barrel 1, a plurality of reinforcing rods 15 are fixedly arranged between the inner fixing ring 13 and the outer fixing ring 14, a fastening screw 16 is connected to the outer fixing ring 14 in a threaded mode, and the end portion of the fastening screw 16 penetrates through the outer fixing ring 14 and is connected with the inner wall of the pump barrel 1 in a threaded mode.

It should be noted that the stability of the oil production pipe 2 in the pump barrel 1 can be improved by the arranged fastening assembly, and the oil production pipe 2 is prevented from being bent due to overlong length, so that the oil production work is influenced.

In an alternative embodiment, the primary filter 8 is located at the bottom end of the fine filter 9.

It should be noted that the primary filter screen 8 is provided for primary filtering of sand and crushed stone in the crude oil.

In an optional embodiment, the bottom end of the fine filter screen 9 is located above the bottom surface of the filter pipe 7, the bottom end inside the filter pipe 7 is provided with a plurality of activated carbon plates 17 side by side, an interval space exists between two adjacent activated carbon plates 17, a plurality of adsorption holes are distributed on the activated carbon plates 17, and the adsorption hole on the activated carbon plate 17 at the upper end is larger than the adsorption hole on the activated carbon plate 17 at the lower end.

It should be noted that a plurality of activated carbon plates 17 are provided for further adsorbing solid impurities in the crude oil, so as to ensure the oil outlet quality of the crude oil.

In an alternative embodiment, the top end of the outer wall of the pump barrel 1 is provided with a sealing ring 5, and the sealing ring 5 is provided with an annular sealing groove 12 for the bottom end of the upper joint 3 to be embedded into.

The joint between the pump cylinder 1 and the upper joint 3 can be sealed by the provided seal ring 5.

In an alternative embodiment, the surfaces of the pump barrel 1, the production string 2, the filter tube 7 and the lower end tube 10 are coated with a high temperature resistant coating.

It should be noted that the high temperature resistant coating coated on the surfaces of the pump barrel 1, the production pipe 2, the filter pipe 7 and the lower end pipe 10 can improve the heat resistance of the pump barrel 1, the production pipe 2, the filter pipe 7 and the lower end pipe 10 to adapt to high temperature oil extraction work.

In an alternative embodiment, the primary filter 8 and the fine filter 9 are both made of stainless steel mesh.

It should be noted that, this arrangement is adopted to ensure the structural strength of the primary filter screen 8 and the fine filter screen 9.

The utility model discloses when using, work when starting oil suction pump 4, crude oil removes the impurity through prefilter net 8 earlier, then the inside of filter tube 7 is inhaled to the fine filter screen 9 of rethread, the fine filter screen 9 of setting can further filter the screening to the impurity in crude oil, with the purity of guaranteeing crude oil, can avoid the grit to pile up and then cause the jam of oil production pipe 2 in oil production pipe 2 formation simultaneously, after crude oil enters into filter tube 7, the fine impurity in a plurality of activated carbon board 17 that sets up can adsorb crude oil, last crude oil is extracted the outside through lower-end pipe 10 and oil production pipe 2 respectively, fastening assembly through the setting can promote the stability of oil production pipe 2 in pump barrel 1, prevent oil production pipe 2 because of the bending that leads to, with the normal clear of assurance oil recovery work.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (7)

1. A pipe column suitable for a high-temperature ultra-deep well is characterized by comprising a pump barrel (1) and an oil production pipe (2); the oil production pipe (2) is arranged inside the pump cylinder (1) and is coaxial with the pump cylinder (1), the oil production pipe (2) and the pump cylinder (1) are provided with a hollow layer (6), a plurality of fastening components are longitudinally arranged in parallel in the pump barrel (1), the top end of the pump barrel (1) is connected with an upper joint (3), the top end of the oil production pipe (2) is connected with an oil suction pump (4), the bottom of the oil production pipe (2) is communicated with a lower end pipe (10), the bottom end of the lower end pipe (10) is provided with a one-way liquid inlet valve (11), the bottom end of the oil production pipe (2) is fixedly provided with a filter pipe (7), and lower extreme pipe (10) are arranged in whole filter tube (7), the upper end and the oil production pipe (2) sealing connection of filter tube (7), and the outer wall of filter tube (7) is gone up the surrounding and is provided with a plurality of openings, all is provided with fine and close filter screen (9) in a plurality of openings, is connected with primary filter screen (8) between the inner wall of filter tube (7) and pump barrel (1).

2. The pipe column suitable for the high-temperature ultra-deep well is characterized in that the fastening assembly comprises an inner fixing ring (13), an outer fixing ring (14) and reinforcing rods (15), the inner fixing ring (13) is tightly attached to the outer wall of the oil production pipe (2), the outer fixing ring (14) is tightly attached to the inner wall of the pump barrel (1), the reinforcing rods (15) are multiple and are fixedly arranged between the inner fixing ring (13) and the outer fixing ring (14), fastening screws (16) are in threaded connection with the outer fixing ring (14), and the end portions of the fastening screws (16) penetrate through the outer fixing ring (14) and are in threaded connection with the inner wall of the pump barrel (1).

3. A pipe string for high temperature ultra deep well according to claim 1, characterized in that the primary filter screen (8) is arranged at the bottom end of the fine filter screen (9).

4. The pipe column suitable for the high-temperature ultra-deep well is characterized in that the bottom end of the fine filter screen (9) is located above the bottom surface of the filter pipe (7), the bottom end inside the filter pipe (7) is provided with a plurality of activated carbon plates (17) side by side, a spacing space exists between two adjacent activated carbon plates (17), a plurality of adsorption holes are distributed in each activated carbon plate (17), and the adsorption holes in the activated carbon plate (17) at the upper end are larger than the adsorption holes in the activated carbon plate (17) at the lower end.

5. The pipe column suitable for the high-temperature ultra-deep well is characterized in that a sealing ring (5) is arranged at the top end of the outer wall of the pump barrel (1), and an annular sealing groove (12) for embedding the bottom end of the upper joint (3) is formed in the sealing ring (5).

6. The pipe string suitable for the high-temperature ultra-deep well is characterized in that the surfaces of the pump barrel (1), the oil production pipe (2), the filter pipe (7) and the lower end pipe (10) are coated with high-temperature resistant paint.

7. The pipe string for the high-temperature ultra-deep well is characterized in that the primary filter screen (8) and the fine filter screen (9) are both made of stainless steel wire mesh.

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