CN212671741U - Underground pump-passing electric heating lifting pipe column - Google Patents
Underground pump-passing electric heating lifting pipe column Download PDFInfo
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- CN212671741U CN212671741U CN202020543645.0U CN202020543645U CN212671741U CN 212671741 U CN212671741 U CN 212671741U CN 202020543645 U CN202020543645 U CN 202020543645U CN 212671741 U CN212671741 U CN 212671741U
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- 238000005485 electric heating Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 26
- 239000003921 oil Substances 0.000 abstract description 19
- 239000010779 crude oil Substances 0.000 abstract description 10
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a cross pump electrical heating lifting column in pit, hollow pull rod (2) and outer pump barrel (1) of establishing including the endotheca, form annular cavity between hollow pull rod (2) and outer pump barrel (1), hollow pull rod (2) are upright state, are equipped with axial through channel (13) that are used for installing heating cable in hollow pull rod (2), and hollow pull rod (2) lower extreme is connected with plug (8), and the cover is equipped with traveling valve and the standing valve that the interval set up from top to bottom between hollow pull rod (2) and outer pump barrel (1). The underground pump-passing electric heating lifting pipe column can realize pump-passing electric heating, and solves the problems that crude oil does not enter a pump, the underground crude oil has poor fluidity, a pump suction inlet, an oil pipe are waxed and the like. The heating of the whole well section is thoroughly realized, and the purpose of thick oil thermal recovery is achieved.
Description
Technical Field
The utility model relates to an oil field production facility field, specificly is a cross pump electrical heating lifting pipe post in pit.
Background
The Liaohe oil field is put into exploitation from 1995 to a block containing super-thick oil and extra-thick oil, the viscosity of crude oil in the block is 10000 Pa.s-250000 mPa.s, the depth of an oil layer is 800 m-1500 m, more than 3000 ports of the existing oil wells are main oil products for continuous and stable production of the Liaohe oil field. The oil layers of the blocks are shallow, the viscosity of crude oil is high, the crude oil in the oil layers is difficult to flow, the exploitation difficulty is high, and due to the difficulty in processing and construction, most of the oil wells are heated by a hollow rod cable on a pump to reduce viscosity and lift, so that the problems of high viscosity of the crude oil in the pump, high friction resistance in the up-and-down movement of a sucker rod string and low oil extraction efficiency exist.
SUMMERY OF THE UTILITY MODEL
In order to improve oil recovery efficiency, the utility model provides a cross pump electrical heating lifting pipe post in pit, this cross pump electrical heating lifting pipe post in pit can realize crossing pump electrical heating, solves crude oil and does not advance the pump, crude oil mobility is poor in the pit, pump sunction inlet, oil pipe wax deposition scheduling problem. The heating of the whole well section is thoroughly realized, and the purpose of thick oil thermal recovery is achieved.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a cross pump electrical heating lift tubular column in pit, includes hollow pull rod and outer pump barrel that the endotheca was established, forms annular cavity between hollow pull rod and the outer pump barrel, and hollow pull rod is upright state, is equipped with the axial through channel who is used for installing heating cable in the hollow pull rod, and hollow pull rod lower extreme is connected with the plug, and the cover is equipped with traveling valve and the standing valve that the interval set up from top to bottom between hollow pull rod and the outer pump barrel.
The hollow pull rod comprises a pull rod upper section, a pull rod middle section and a pull rod lower section which are sequentially arranged from top to bottom, the pull rod upper section is connected with the pull rod middle section through an upper guide joint, the pull rod middle section is connected with the pull rod lower section through a lower guide joint, and the outer pump cylinder comprises a pump cylinder upper section, a pump cylinder middle section and a pump cylinder lower section which are sequentially connected from top to bottom.
The upper section of the pull rod and the middle section of the pull rod are both in threaded connection with the upper guide joint, the middle section of the pull rod and the lower section of the pull rod are both in threaded connection with the lower guide joint, the upper guide joint and the lower guide joint are both located in the upper section of the pump barrel, and a plunger is sleeved between the middle section of the pull rod and the upper section of the pump barrel.
The plunger is in clearance fit with the upper section of the pump barrel, the inner diameter of the plunger is larger than the outer diameter of the middle section of the pull rod, an upper annular space is formed between the plunger and the middle section of the pull rod, the length of the plunger is smaller than the distance between the upper guide joint and the lower guide joint, and the plunger can only move between the upper guide joint and the lower guide joint.
The traveling valve comprises a plunger valve seat and a plunger valve ball which are arranged up and down, the plunger valve seat and the plunger valve seat are both of annular structures, the plunger valve seat is fixed at the lower end of the plunger, and the plunger valve ball is fixed at the lower end of the middle section of the pull rod.
Outside pump barrel middle section cover was established and the pull rod hypomere, the cover was equipped with sealed sliding sleeve between pump barrel middle section and pump barrel hypomere and the pull rod hypomere, and sealed sliding sleeve and pull rod hypomere clearance fit form annular space down between sealed sliding sleeve and pump barrel middle section and the pump barrel hypomere.
The fixed valve comprises a sliding valve hemisphere and a fixed valve seat which are arranged up and down, the sliding valve hemisphere and the fixed valve seat are both of annular structures, the sliding valve hemisphere is fixed at the upper end of the sealing sliding sleeve, and the fixed valve seat is fixed in the middle of the middle section of the pump cylinder.
The middle section of the pump cylinder comprises a first section, a second section, a third section and a fourth section which are sequentially connected from top to bottom, wherein the inner surfaces of the first section, the second section and the third section are respectively provided with a centering block, a fixed valve seat is fixed in the second section of the middle section of the pump cylinder, and a sliding valve hemisphere is fixed at the upper end of the sealing sliding sleeve through a nut.
The outer fixed sleeve of sealed sliding sleeve is equipped with and keeps off the ring, keeps off the ring and is located pump barrel middle section, keeps off the below that the ring is located solid fixed valve seat, keeps off the external diameter of ring and is greater than solid fixed valve seat's internal diameter.
The upper end of the outer pump barrel is connected with a pump barrel joint, the upper end of the hollow pull rod is connected with a pull rod joint, the upper section of the pump barrel is in threaded connection with the middle section of the pump barrel, and the middle section of the pump barrel is in threaded connection with the lower section of the pump barrel.
The utility model has the advantages that: the traditional on-pump heating is changed into under-pump heating, the oil layer can be directly heated according to requirements, the recovery ratio is improved, and the oil wells with wax blockage, no oil production and the like can normally produce.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic diagram of the underground pump-passing electric heating lifting pipe column of the present invention.
Fig. 2 is a schematic view of the upper part of fig. 1.
Fig. 3 is a schematic view of the upper middle portion of fig. 1.
Fig. 4 is a schematic view of the middle of fig. 1.
Fig. 5 is a schematic view of the lower part of fig. 1.
Fig. 6 is a schematic view of the lower part of fig. 1.
1. An outer pump barrel; 2. a hollow pull rod; 3. a plunger; 4. sealing the sliding sleeve; 5. a fixed valve seat; 6. a slide valve hemisphere; 7. a plunger valve seat; 8. plugging with a thread; 9. an upper guide joint; 10. a lower guide joint; 11. a plunger valve ball; 12. a baffle ring; 13. an axial through passage;
101. an upper section of the pump barrel; 102. a pump cylinder middle section; 103. the lower section of the pump cylinder;
201. a pull rod upper section; 202. a pull rod middle section; 203. a lower section of the pull rod.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a cross pump electrical heating lifting column in pit, hollow pull rod 2 and outer pump barrel 1 including the endotheca is established, form annular cavity between hollow pull rod 2 and the outer pump barrel 1, crude oil can be kept somewhere or flow through in this annular cavity, hollow pull rod 2 and outer pump barrel 1 all are upright state, be equipped with the axial through channel 13 that is used for installing heating cable in hollow pull rod 2, hollow pull rod 2 lower extreme is connected with plug 8, the cover is equipped with traveling valve and the standing valve that the interval set up from top to bottom between hollow pull rod 2 and the outer pump barrel 1, hollow pull rod 2 can reciprocate for outer pump barrel 1, as shown in fig. 1-6.
In this embodiment, the axis of the hollow pull rod 2 coincides with the axis of the outer pump barrel 1, the hollow pull rod 2 includes a pull rod upper section 201, a pull rod middle section 202 and a pull rod lower section 203 which are sequentially arranged from top to bottom, the pull rod upper section 201 and the pull rod middle section 202 are connected through an upper guiding joint 9, the pull rod middle section 202 and the pull rod lower section 203 are connected through a lower guiding joint 10, and the outer pump barrel 1 includes a pump barrel upper section 101, a pump barrel middle section 102 and a pump barrel lower section 103 which are sequentially connected from top to bottom.
In this embodiment, the upper tie rod section 201 and the middle tie rod section 202 are both in threaded connection with the upper guide joint 9, the middle tie rod section 202 and the lower tie rod section 203 are both in threaded connection with the lower guide joint 10, the upper guide joint 9 and the lower guide joint 10 are both located in the upper pump barrel section 101, the outer peripheral surfaces of the upper guide joint 9 and the lower guide joint 10 are in a spline structure, and the upper guide joint 9 and the lower guide joint 10 are used for connection, guidance and centering. A tubular plunger 3 is sleeved between the middle pull rod section 202 and the upper pump barrel section 101, as shown in fig. 2 to 4.
In this embodiment, the plunger 3 is in clearance fit with the pump barrel upper section 101, the inner diameter of the plunger 3 is larger than the outer diameter of the pull rod middle section 202, an upper annular space is formed between the plunger 3 and the pull rod middle section 202, the length of the plunger 3 is smaller than the distance between the upper guide joint 9 and the lower guide joint 10, and the plunger 3 can move up and down relative to the hollow pull rod 2 and the outer pump barrel 1. The upper guide joint 9 and the lower guide joint 10 can block the plunger 3 from passing through, and the plunger 3 can only move between the upper guide joint 9 and the lower guide joint 10, so that the up-down stroke of the plunger 3 and the emergency opening and closing of the traveling valve are ensured.
In this embodiment, the traveling valve includes a plunger valve seat 7 and a plunger valve ball 11 which are vertically disposed, both the plunger valve ball 11 and the plunger valve seat 7 are of an annular structure, and the plunger valve ball 11 and the plunger valve seat 7 can be separated or connected in a sealing manner. The plunger valve seat 7 is fixed at the lower end of the plunger 3, and the plunger valve ball 11 is fixed at the lower end of the pull rod middle section 202, that is, the plunger valve seat 7 is fixed relative to the plunger 3, and the plunger valve ball 11 is fixed relative to the pull rod middle section 202, as shown in fig. 4.
In this embodiment, the pump barrel middle section 102 is sleeved with the pull rod lower section 203, a sealing sliding sleeve 4 is sleeved between the pump barrel middle section 102 and the pump barrel lower section 103 and between the pull rod lower section 203, the sealing sliding sleeve 4 is of a tubular structure, the sealing sliding sleeve 4 is in clearance fit with the pull rod lower section 203, a lower annular space is formed between the sealing sliding sleeve 4 and the pump barrel middle section 102 and the pump barrel lower section 103, and the sealing sliding sleeve 4 can move up and down relative to the hollow pull rod 2 and the outer pump barrel 1, as shown in fig. 5.
In the embodiment, the fixed valve comprises a sliding valve hemisphere 6 and a fixed valve seat 5 which are arranged up and down, the sliding valve hemisphere 6 and the fixed valve seat 5 are both in an annular structure, and the sliding valve hemisphere 6 and the fixed valve seat 5 can be separated or connected in a sealing mode. The sliding valve hemisphere 6 is fixed at the upper end of the sealing sliding sleeve 4, and the fixed valve seat 5 is fixed at the middle part of the middle section 102 of the pump cylinder, i.e. the sliding valve hemisphere 6 is fixed relative to the sealing sliding sleeve 4, and the fixed valve seat 5 is fixed relative to the middle section 102 of the pump cylinder, as shown in fig. 5.
In this embodiment, the middle section 102 of the pump cylinder includes a first section, a second section, a third section and a fourth section which are sequentially connected by screw threads from top to bottom, the upper section 101 of the pump cylinder is connected with the first section by screw threads, and the fourth section is welded with the lower section 103 of the pump cylinder. The inner surfaces of the first section, the second section and the third section are respectively provided with a plurality of centralizing blocks, the plurality of centralizing blocks are arranged at intervals along the circumferential direction of the pump cylinder middle section 102, the fixed valve seat 5 is fixed in the second section of the pump cylinder middle section 102, the sliding valve hemisphere 6 is fixed at the upper end of the sealing sliding sleeve 4 through a nut, and the nut is in threaded connection with the upper end of the sealing sliding sleeve 4.
In this embodiment, the blocking ring 12 is fixedly sleeved outside the sliding seal sleeve 4, and the blocking ring 12 is fixed relative to the sliding seal sleeve 4. The baffle ring 12 is positioned in the middle section 102 of the pump cylinder, the baffle ring 12 is positioned below the fixed valve seat 5, the outer diameter of the baffle ring 12 is larger than the inner diameter of the fixed valve seat 5, the baffle ring 12 comprises a circumferential notch, the baffle ring 12 can radially contract, and the outer diameter of the baffle ring 12 after contraction is still larger than the inner diameter of the fixed valve seat 5.
The diameter of the baffle ring 12 can be enlarged or reduced, namely the outer diameter of the baffle ring 12 can be enlarged or reduced, in the upward moving process of the sealing sliding sleeve 4, when the baffle ring 12 touches the fixed valve seat 5, the fixed valve seat 5 can block the sealing sliding sleeve 4 and the baffle ring 12 to continue to move upwards, namely the baffle ring 12 can limit the sealing sliding sleeve 4 to excessively move upwards, so that the situation that the sealing sliding sleeve cannot be closed is prevented.
In this embodiment, the upper end of the outer pump barrel 1 is connected with a pump barrel joint through a screw thread, the upper end of the hollow pull rod 2 is connected with a pull rod joint through a screw thread, the upper pump barrel section 101 is connected with the middle pump barrel section 102 through a screw thread, and the middle pump barrel section 102 is welded with the lower pump barrel section 103. The function of the plug 8 is to close the lower end of the hollow pull rod 2 and to take the weight of the heating cable inside the hollow pull rod 2, as shown in fig. 6. In addition, the connection relation between the components of the underground pump-passing electric heating lifting pipe column can be realized by adopting the existing connection mode, such as threaded connection, clamping connection or welding.
The operation of the pump-down electrically heated lift string is described below.
1. The heating cable passes through the hollow rod in the oil pipe and the hollow pull rod 2 in advance, namely the heating cable is sleeved in the hollow pull rod 2, the heating cable is positioned in the axial through channel 13 of the hollow pull rod 2, the lower end of the heating cable is abutted against the plug 8, and the heating cable can realize continuous pump-passing heating.
2. During the upstroke, the hollow pull rod 2 drives the traveling valve (comprising the plunger valve seat 7 and the plunger valve ball 11) and the plunger 3 to move upwards, the traveling valve is in a setting state, the plunger valve seat 7 is in sealing connection with the plunger valve ball 11, so that liquid (such as crude oil) in the plunger 3 and above the plunger 3 is sealed, when the hollow pull rod 2 continues to move upwards, the plunger 3 lifts the liquid, the liquid in a pump cavity is lifted into a pump oil pipe column, the sliding valve hemisphere 6 is jacked up to a certain height, the fixed valve (comprising the sliding valve hemisphere 6 and the fixed valve seat 5) is in an opening state, and the liquid below the fixed valve flows upwards through the fixed valve until the plunger 3 continues to move upwards to an upper dead center.
3. During the lower stroke, the hollow pull rod 2 drives the traveling valve to move downwards to enable the traveling valve to be opened rapidly, and the fixed valve is closed rapidly under the action of the self weight and the friction force of the hollow pull rod 2 (the sliding valve hemisphere 6 is in sealing connection with the fixed valve seat 5), so that the pump cavity forms low pressure, liquid below the plunger 3 enters the space between the plunger 3 and the pull rod middle section 202 through the traveling valve to form an upper annular space until the plunger 3 continuously moves downwards to the lower dead point, and a stroke frequency is completed.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and the technical scheme all can the independent assortment use.
Claims (10)
1. The utility model provides a cross pump electrical heating and lift tubular column in pit, a serial communication port, cross pump electrical heating and lift tubular column in pit includes hollow pull rod (2) and outer pump barrel (1) that the endotheca was established, forms annular cavity between hollow pull rod (2) and outer pump barrel (1), hollow pull rod (2) are upright state, be equipped with axial through channel (13) that are used for installing heating cable in hollow pull rod (2), hollow pull rod (2) lower extreme is connected with plug (8), the cover is equipped with traveling valve and the standing valve that the interval set up from top to bottom between hollow pull rod (2) and outer pump barrel (1).
2. The electric heating lifting pipe column for underground pump passing according to claim 1, characterized in that the hollow pull rod (2) comprises an upper pull rod section (201), a middle pull rod section (202) and a lower pull rod section (203) which are sequentially arranged from top to bottom, the upper pull rod section (201) is connected with the middle pull rod section (202) through an upper guide joint (9), the middle pull rod section (202) is connected with the lower pull rod section (203) through a lower guide joint (10), and the outer pump cylinder (1) comprises an upper pump cylinder section (101), a middle pump cylinder section (102) and a lower pump cylinder section (103) which are sequentially connected from top to bottom.
3. The electric heating lifting pipe column for the underground pump-passing according to claim 2, characterized in that the upper pull rod section (201) and the middle pull rod section (202) are both in threaded connection with the upper guide joint (9), the middle pull rod section (202) and the lower pull rod section (203) are both in threaded connection with the lower guide joint (10), the upper guide joint (9) and the lower guide joint (10) are both positioned in the upper pump cylinder section (101), and the plunger (3) is sleeved between the middle pull rod section (202) and the upper pump cylinder section (101).
4. A downhole pumped electrically heated lifting string according to claim 3, wherein the plunger (3) is in clearance fit with the upper section (101) of the pump barrel, the inner diameter of the plunger (3) is larger than the outer diameter of the middle section (202) of the pull rod, an upper annular space is formed between the plunger (3) and the middle section (202) of the pull rod, the length of the plunger (3) is smaller than the distance between the upper guide joint (9) and the lower guide joint (10), and the plunger (3) can only move between the upper guide joint (9) and the lower guide joint (10).
5. The electric heating lifting column for the underground pump-passing according to claim 3, wherein the traveling valve comprises a plunger valve seat (7) and a plunger valve ball (11) which are vertically arranged, the plunger valve ball (11) and the plunger valve seat (7) are both in an annular structure, the plunger valve seat (7) is fixed at the lower end of the plunger (3), and the plunger valve ball (11) is fixed at the lower end of the middle section (202) of the pull rod.
6. The electric heating lifting column for the underground pump passing according to claim 2, wherein the middle section (102) of the pump barrel is sleeved outside the lower section (203) of the pull rod, a sealing sliding sleeve (4) is sleeved between the middle section (102) of the pump barrel, the lower section (103) of the pump barrel and the lower section (203) of the pull rod, the sealing sliding sleeve (4) is in clearance fit with the lower section (203) of the pull rod, and a lower annular space is formed between the sealing sliding sleeve (4) and the middle section (102) of the pump barrel and the lower section (103) of the pump barrel.
7. The electric heating lifting pipe column for the underground pump-passing according to claim 6, wherein the fixed valve comprises a sliding valve hemisphere (6) and a fixed valve seat (5) which are arranged up and down, the sliding valve hemisphere (6) and the fixed valve seat (5) are both in an annular structure, the sliding valve hemisphere (6) is fixed at the upper end of the sealing sliding sleeve (4), and the fixed valve seat (5) is fixed at the middle part of the middle section (102) of the pump barrel.
8. The underground pump-passing electric heating lifting pipe column as claimed in claim 7, wherein the pump cylinder middle section (102) comprises a first section, a second section, a third section and a fourth section which are sequentially connected from top to bottom, the inner surfaces of the first section, the second section and the third section are respectively provided with a centering block, a fixed valve seat (5) is fixed in the second section of the pump cylinder middle section (102), and a sliding valve hemisphere (6) is fixed at the upper end of the sealing sliding sleeve (4) through a nut.
9. The electric heating lifting pipe column for the underground pump-passing according to claim 7, characterized in that a baffle ring (12) is fixedly sleeved outside the sealing sliding sleeve (4), the baffle ring (12) is positioned in the middle section (102) of the pump cylinder, the baffle ring (12) is positioned below the fixed valve seat (5), and the outer diameter of the baffle ring (12) is larger than the inner diameter of the fixed valve seat (5).
10. The electric heating lifting pipe column for the underground pump-passing according to claim 1, characterized in that the upper end of the outer pump cylinder (1) is connected with a pump cylinder joint, the upper end of the hollow pull rod (2) is connected with a pull rod joint, the upper pump cylinder section (101) is in threaded connection with the middle pump cylinder section (102), and the middle pump cylinder section (102) is in threaded connection with the lower pump cylinder section (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020543645.0U CN212671741U (en) | 2020-04-14 | 2020-04-14 | Underground pump-passing electric heating lifting pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020543645.0U CN212671741U (en) | 2020-04-14 | 2020-04-14 | Underground pump-passing electric heating lifting pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212671741U true CN212671741U (en) | 2021-03-09 |
Family
ID=74811565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020543645.0U Active CN212671741U (en) | 2020-04-14 | 2020-04-14 | Underground pump-passing electric heating lifting pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212671741U (en) |
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2020
- 2020-04-14 CN CN202020543645.0U patent/CN212671741U/en active Active
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