CN201705291U - Hot washing wax cleaning underground check valve of hollow sucker rod - Google Patents
Hot washing wax cleaning underground check valve of hollow sucker rod Download PDFInfo
- Publication number
- CN201705291U CN201705291U CN2010201758466U CN201020175846U CN201705291U CN 201705291 U CN201705291 U CN 201705291U CN 2010201758466 U CN2010201758466 U CN 2010201758466U CN 201020175846 U CN201020175846 U CN 201020175846U CN 201705291 U CN201705291 U CN 201705291U
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- connector
- core assembly
- seat
- centre bore
- washing wax
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Abstract
The utility model relates to a hot washing wax cleaning underground check valve of a hollow sucker rod, which is used for being connected with the hollow sucker rod when an oil well carries out hot wax cleaning. An upper connecting body is connected at the lower end of an upper joint, axial through holes are symmetrically arranged at both sides of a center hole arranged at the lower end of the upper connecting body, the upper connecting body is provided with a transverse hole which is communicated with the upper end of the center hole, a middle connecting body is connected on the outer wall of the upper connecting body, a valve core assembly is arranged in a center hole cavity arranged at the upper end of the middle connecting body, a lower connecting pipe is connected on the outer wall of the middle connecting body, the valve core assembly is arranged in a center hole cavity arranged at the upper end of the lower connecting pipe, and a lower joint is connected at the lower end of the lower connecting pipe. The utility model has the advantages that the hot washing wax cleaning can be realized through the hollow sucker rod, the sealing performance of the check valve can be improved, the dimension of the flow passage can be enlarged, at the same time, the stress requirement of the hot washing wax cleaning of the underground check valve of the hollow sucker rod can be met, and the reliability of the underground check valve can be improved.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, particularly is connected the hot-washing wax remover shaft bottom ball-and-seat on the hollow rod during the hot wax removal of oil well.
Background technology
Hollow rod hot-washing wax remover technology is that hot active water, paraffin remover or crude oil are done hot washing lotion, be heated to the dewaxing temperature through the dewaxing car, adopt heat to give a baby a bath on the third day after its birth logical pump from hollow-rod string injection suitable for reading, through the hollow rod inner chamber, hot washing lotion arrives the paraffin removal from oil well degree of depth, enter annular space between oil pipe and the hollow rod through the shaft bottom ball-and-seat again, the well liquid that returns with the oil pumping flow process one is logical to rise to well head, thereby reaches the purpose of hot-washing wax remover.
The shaft bottom ball-and-seat is the important downhole tool in the hollow rod hot-washing wax remover roofbolt, is connected G.I.H on the hollow rod.Its sealing performance, channel size will directly influence the effect of hot-washing wax remover.At present, there is following problem in the structure of shaft bottom ball-and-seat:
1, poor sealing performance: after the ball-and-seat seal failure of shaft bottom, crude oil will progress into the hollow rod inner chamber by the shaft bottom ball-and-seat, cause the hollow rod inner chamber to stop up, and cause roofbolt to lose efficacy.Seal failure mainly is to be caused by following two aspects: 1) well liquid has certain corrosivity, and the shaft bottom ball-and-seat is worked in well liquid for a long time, and the sealing position is corroded gradually and damages, and causes seal failure; 2) the shaft bottom ball-and-seat is frequently opened, is closed, and wearing and tearing gradually in the sealing position, causes seal failure.
2, channel size is little: shaft bottom ball-and-seat channel size is too small, and hot washing lotion flow resistance increases, and heat is washed system's discharge capacity and reduced, and pressure raises, and heat is washed deleterious.
3, intensity is low: the shaft bottom ball-and-seat is the instrument that connects hollow rod and solid sucker rod, is subjected to the fluctuating load effect of rod string for a long time, and therefore, the shaft bottom ball-and-seat also need have enough intensity.
The utility model content
The purpose of this utility model is: a kind of hollow rod hot-washing wax remover shaft bottom ball-and-seat is provided, can realizes carrying out hot-washing wax remover by hollow rod, improve the sealing performance of ball-and-seat; Increase channel size and satisfy the stressed needs of hollow rod hot-washing wax remover shaft bottom ball-and-seat greatly, simultaneously, improve the reliability of shaft bottom ball-and-seat.
The technical solution adopted in the utility model is: hollow rod hot-washing wax remover shaft bottom ball-and-seat, mainly form by top connection, last connector, core assembly, intermediate connector, following tube connector and lower contact, top connection is the cylinder bodily form, centre bore is arranged, there is external screw thread at two ends, it is characterized in that: be connected with connector in the lower end of top connection, the lower end centre bore bilateral symmetry of last connector has axially extending bore, last connector has transverse holes, the upper end UNICOM of transverse holes and centre bore.
On last connector outer wall screw thread is arranged, be connected with intermediate connector on the last connector outer wall, there is center bore the intermediate connector upper end, in the center bore of intermediate connector upper end core assembly is arranged, and core assembly is fixed on the connector lower end.
The centre bore bilateral symmetry has axially extending bore in the lower end of intermediate connector, and intermediate connector has transverse holes, the upper end UNICOM of transverse holes and lower end centre bore.
On the intermediate connector outer wall screw thread is arranged, be connected with down tube connector on the intermediate connector outer wall, there is centre bore following tube connector upper end, in the centre bore of tube connector upper end core assembly is being arranged down, and core assembly is fixed on the intermediate connector lower end.
Be connected with lower contact in following tube connector lower end.There is screw thread the lower end of lower contact.
What described core assembly adopted is the single current ball valve.
In order to improve sealing, between top connection and last connector, sealing ring is arranged; Between tube connector and the lower contact sealing ring is being arranged down.
The operating principle of hollow rod hot-washing wax remover shaft bottom ball-and-seat: consult Fig. 1.Hot washing lotion enters top connection 1 from ball-and-seat top, hollow rod hot-washing wax remover shaft bottom hollow stem, can flow to core assembly 4 by the axially extending bore 8 of symmetry on the last connector 3 from the downward hot washing lotion that flows into of top connection 1 centre bore, a part enters in the oil pipe through last connector 3 centre bores and transverse holes outflow by valve balls, valve seat in the core assembly 4; The hot washing lotion of another part flows into core assembly 4 space outerpaces and enters down downwards in the tube connector 6, and enters in the oil pipe by the core assembly 4 in the following tube connector 6, intermediate connector 5 centre bores and transverse holes outflow.
1) two-stage ball-and-seat structure, hot washing lotion fluid be the bottom from both sides axially extending bore 8 to spool, is returning by core assembly 4, the valve ball of core assembly 4, valve base sealing pretightning force are by the valve ball deadweight, whole valve minimum flow path has two, and each minimum flow path diameter 17mm guarantees that there are enough discharge capacities in the heat system of washing;
2) all component nickel phosphor plating preservative treatments, and strict surface roughness requirement is arranged, guaranteed the decay resistance of whole valve;
3) metallic seal of the valve ball of core assembly 4, valve seat design, O RunddichtringO Seal Design and thread locking adhesive Seal Design have guaranteed whole valve excellent sealing performance
The beneficial effects of the utility model: the utility model hollow rod hot-washing wax remover shaft bottom ball-and-seat, can realize carrying out hot-washing wax remover by hollow rod, improve the sealing performance of ball-and-seat; It is big to increase channel size, and heat is washed system's discharge capacity and increased, and the heat time of washing shortens, and the paraffin blockage phenomenon can not take place, and system pressure reduces; Satisfy the stressed needs of hollow rod hot-washing wax remover shaft bottom ball-and-seat simultaneously, improve the reliability of shaft bottom ball-and-seat.
Description of drawings
Fig. 1 is the structural profile schematic diagram of the utility model hollow rod hot-washing wax remover shaft bottom ball-and-seat.
Fig. 2 is the A-A sectional drawing of Fig. 1.The axially extending bore 8 of expression centre bore both sides.
Among the figure, 1. top connection, 2. sealing ring is 3. gone up connector, 4. core assembly, 5. intermediate connector 6. descends tube connector, 7. lower contact, 8. axially extending bore.
The specific embodiment
Embodiment 1: with a hollow rod hot-washing wax remover shaft bottom ball-and-seat is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model hollow rod hot-washing wax remover shaft bottom ball-and-seat mainly is made up of top connection 1, last connector 3, core assembly 4, intermediate connector 5, following tube connector 6 and lower contact 7.Top connection 1 is the cylinder bodily form, and centre bore is arranged, and there is external screw thread at two ends.The external diameter of last connector 3, intermediate connector 5 and following tube connector 6 is 62mm.
Be connected with connector 3 in the lower end of top connection 1, between top connection 1 and last connector 3, two seals circle 2 arranged.The lower end centre bore bilateral symmetry of last connector 3 has axially extending bore 8 (consulting Fig. 2), and last connector 3 has a transverse holes, the upper end UNICOM of transverse holes and centre bore.
On last connector 3 outer walls, screw thread is arranged, be connected with an intermediate connector 5 on last connector 3 outer walls, there is center bore intermediate connector 5 upper ends, in intermediate connector 5 upper end center bores core assembly 4 is arranged, and core assembly 4 are fixed on connector 3 lower ends.What core assembly 4 adopted is the single current ball valve, is rod-type pumping unit V11-150 type single current ball valve, comprises valve ball, valve seat.
In the lower end of intermediate connector 5 centre bore bilateral symmetry two axially extending bores 8 (consulting Fig. 2) are arranged, intermediate connector 5 has a transverse holes, the upper end UNICOM of transverse holes and lower end centre bore.
On intermediate connector 5 outer walls screw thread is arranged, be connected with a following tube connector 6 on intermediate connector 5 outer walls, there is centre bore following tube connector 6 upper ends, in the tube connector 6 upper end centre bores core assembly 4 is being arranged down, and core assembly 4 are fixed on intermediate connector 5 lower ends.What core assembly 4 adopted is the single current ball valve, is rod-type pumping unit V11-150 type single current ball valve.
Be connected with lower contact 7 in following tube connector 6 lower ends.Between tube connector 6 and the lower contact 7 two seals circle 2 is being arranged down.There is screw thread the lower end of lower contact 7.
Adopt two-stage single current structure, assurance hollow stem heat is washed system's discharge capacity and is reached 10m
3More than/the h, guarantee that simultaneously paraffin blockage does not take place the shaft bottom ball-and-seat.Guarantee enough intensity, safety factor reaches more than 4.
Claims (3)
1. hollow rod hot-washing wax remover shaft bottom ball-and-seat, mainly form by top connection (1), last connector (3), core assembly (4), intermediate connector (5), following tube connector (6) and lower contact (7), top connection (1) is the cylinder bodily form, centre bore is arranged, there is external screw thread at two ends, it is characterized in that: be connected with connector (3) in the lower end of top connection (1), the lower end centre bore bilateral symmetry of last connector (3) has axially extending bore (8), last connector (3) has transverse holes, the upper end UNICOM of transverse holes and centre bore;
On last connector (3) outer wall, screw thread is arranged, be connected with intermediate connector (5) on last connector (3) outer wall, there is center bore intermediate connector (5) upper end, in the center bore of intermediate connector (5) upper end, core assembly (4) is arranged, and core assembly (4) is fixed on connector (3) lower end;
The centre bore bilateral symmetry has axially extending bore (8) in the lower end of intermediate connector (5), and intermediate connector (5) has transverse holes, the upper end UNICOM of transverse holes and lower end centre bore;
On intermediate connector (5) outer wall, screw thread is arranged, be connected with down tube connector (6) on intermediate connector (5) outer wall, there is centre bore following tube connector (6) upper end, in the centre bore of tube connector (6) upper end core assembly (4) is being arranged down, and core assembly (4) is fixed on intermediate connector (5) lower end;
Be connected with lower contact (7) in following tube connector (6) lower end, there is screw thread the lower end of lower contact (7).
2. hollow rod hot-washing wax remover according to claim 1 shaft bottom ball-and-seat is characterized in that: what described core assembly (4) adopted is the single current ball valve.
3. hollow rod hot-washing wax remover according to claim 1 and 2 shaft bottom ball-and-seat is characterized in that: between top connection (1) and last connector (3) sealing ring (2) is arranged; Between tube connector (6) and the lower contact (7) sealing ring (2) is being arranged down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201758466U CN201705291U (en) | 2010-04-26 | 2010-04-26 | Hot washing wax cleaning underground check valve of hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201758466U CN201705291U (en) | 2010-04-26 | 2010-04-26 | Hot washing wax cleaning underground check valve of hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705291U true CN201705291U (en) | 2011-01-12 |
Family
ID=43442446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201758466U Expired - Fee Related CN201705291U (en) | 2010-04-26 | 2010-04-26 | Hot washing wax cleaning underground check valve of hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705291U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337864A (en) * | 2011-09-09 | 2012-02-01 | 中国海洋石油总公司 | Safety valve in pipe |
| CN104832135A (en) * | 2015-04-20 | 2015-08-12 | 中国海洋石油总公司 | Oil sleeve communication automatic switch used for sand burying prevention of submersible electric pump well |
| CN112065328A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Device and method for cleaning wax in oil pipe through hot washing |
-
2010
- 2010-04-26 CN CN2010201758466U patent/CN201705291U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337864A (en) * | 2011-09-09 | 2012-02-01 | 中国海洋石油总公司 | Safety valve in pipe |
| CN102337864B (en) * | 2011-09-09 | 2014-03-12 | 中国海洋石油总公司 | Safety valve in pipe |
| CN104832135A (en) * | 2015-04-20 | 2015-08-12 | 中国海洋石油总公司 | Oil sleeve communication automatic switch used for sand burying prevention of submersible electric pump well |
| CN104832135B (en) * | 2015-04-20 | 2017-06-13 | 中海油能源发展股份有限公司 | It is a kind of to connect automatic switch for the oil jacket that submerged electric oil pump well sand control is buried |
| CN112065328A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Device and method for cleaning wax in oil pipe through hot washing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20110426 |