CN213980717U - Constant-pressure starting hydraulic anchor - Google Patents
Constant-pressure starting hydraulic anchor Download PDFInfo
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- CN213980717U CN213980717U CN202022286380.3U CN202022286380U CN213980717U CN 213980717 U CN213980717 U CN 213980717U CN 202022286380 U CN202022286380 U CN 202022286380U CN 213980717 U CN213980717 U CN 213980717U
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- constant pressure
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Abstract
A constant pressure starting hydraulic anchor is provided, an anchor body is provided with an anchor hole, an anchor fluke is arranged in the anchor hole on the anchor body, an inner sleeve is arranged in the anchor body, an upper sealing ring is arranged between the outer wall of the upper part of the inner sleeve and the inner wall of the anchor body, the upper sealing ring is positioned above the anchor hole on the anchor body, so that fluid can not enter the anchor hole on the anchor body through the upper part of the inner sleeve, the lower outer part of the inner sleeve is provided with a large-diameter section, a constant pressure sleeve is arranged in the upper part of a lower joint, an outer sealing ring is arranged between the outer wall of the lower part of the constant pressure sleeve and the inner wall of the upper part of the lower joint, the constant pressure sleeve is fixed on the lower joint through a pin, the upper part of the lower joint is connected with the lower part of the anchor body, so that the constant pressure sleeve is sleeved outside the large-diameter section of the lower outer part of the inner sleeve, an inner sealing ring is arranged between the inner wall of the upper part of the constant pressure sleeve and the large-diameter section of the lower part of the inner sleeve, a certain distance is arranged between the upper end of the inner hole of the constant pressure sleeve and the inner hole of the lower shoulder of the anchor body, and the constant pressure sleeve is contacted with the lower shoulder of the lower shoulder, the inner sealing ring leaves the large diameter section of the lower outer part of the inner sleeve, so that fluid can flow into the anchor hole on the anchor body from the inner part of the inner sleeve.
Description
Technical Field
The utility model belongs to tubular column anchoring device that oil field oil recovery well was used for prevent that the oil pumping tubular column wriggles, a level pressure starts hydraulic anchor.
Background
When the oil well pumps oil, the liquid column load is alternatively transferred on the oil pipe and the sucker rod along with the change of the up-down stroke of the oil pumping unit, so that the oil pipe is lengthened and shortened, the low pumping efficiency of the oil pumping unit is caused, and the oil pipe is tripped and falls into the well. In order to avoid the problems, a hydraulic anchor is used on site, and the hydraulic anchor is arranged on an oil pumping pipe column (connected to an oil well pump) and used for fixing an oil pipe and preventing the oil pipe from stretching and creeping. In the process of construction of some oil-water wells, in order to prevent damage to downhole tools such as packers caused by shifting of a pipe column, hydraulic anchors are connected to the tools. The inner wall of an anchor fluke on the existing hydraulic anchor is communicated with an oil pipe, and as long as the pressure in the oil pipe is 0.5MPa-1MPa higher than the pressure of a sleeve, the anchor fluke can extend out of an anchor hole and be anchored on the sleeve. The pipe column of the lower anchor is provided with an oil well pump, the oil well pump is provided with a fixed valve, and the fixed valve allows the well fluid under the pump to flow upwards but does not allow the well fluid on the fixed valve to flow downwards. Because the outer diameter of the hydraulic anchor is larger, when the speed of lowering the well is too fast, the hydraulic anchor generates a piston effect in the sleeve, the liquid level in the oil pipe on the pump is higher than the liquid level in the sleeve, because the oil pumping pipe column is not continuous, when the oil pumping pipe column is stopped, the pressure in the oil pipe is higher than the pressure in the sleeve by more than 0.5MPa-1MPa, the hydraulic anchor starts anchoring on the way of lowering the well, the hydraulic anchor cannot be lowered into the oil pumping pipe column after anchoring on the way of lowering the well, the oil pumping pipe column cannot reach the designed position, and great economic loss is generated.
Disclosure of Invention
The utility model aims at designing a level pressure starts hydraulic anchor, guarantees that hydraulic anchor can only anchor after the design degree of depth under, prevents the problem of hydraulic anchor anchoring midway, avoids producing economic loss.
The purpose of the utility model is realized like this: the anchor comprises an anchor body, an upper sealing ring, an inner sleeve, an inner sealing ring, a constant pressure sleeve, a pin, an outer sealing ring, a lower joint and an anchor fluke, wherein the anchor body is provided with an anchor hole, the anchor fluke is arranged in the anchor hole on the anchor body, the inner sleeve is arranged in the anchor body, the upper sealing ring is arranged between the outer wall of the upper part of the inner sleeve and the inner wall of the anchor body and is positioned above the anchor hole on the anchor body, the upper sealing ring seals a gap between the outer wall of the upper part of the inner sleeve and the inner wall of the anchor body so that fluid cannot enter the anchor hole on the anchor body through the upper part of the inner sleeve, the lower outer part of the inner sleeve is provided with a large-diameter section, the constant pressure sleeve is arranged in the upper part of the lower joint, the outer sealing ring is arranged between the outer wall of the lower part of the constant pressure sleeve and the inner wall of the upper part of the lower joint, the constant pressure sleeve is fixed on the lower joint through the pin, and the upper part of the lower joint is connected with the anchor body, the constant pressure sleeve is sleeved outside the lower external large-diameter section of the inner sleeve, an inner sealing ring is arranged between the inner wall of the upper part of the constant pressure sleeve and the lower external large-diameter section of the inner sleeve, fluid cannot flow through the inner sealing ring under the action of the inner sealing ring, a certain distance is reserved between the upper end of the constant pressure sleeve and the shoulder of the lower inner hole of the anchor body, and when the constant pressure sleeve goes upwards until the upper end surface of the constant pressure sleeve is contacted with the shoulder of the lower inner hole of the anchor body, the inner sealing ring is separated from the lower external large-diameter section of the inner sleeve, so that the fluid can flow into the anchor hole on the anchor body from the inside of the inner sleeve.
The lower part of the inner sleeve is provided with a communicating groove which is positioned below the inner sealing ring.
The utility model has the advantages that: when the hydraulic anchor is lowered into the well, the pressure on the pump cannot be transmitted to the inner wall of the anchor claw, the set pressure pin needs to be driven to cut off, the anchoring mechanism is started to anchor after the pin is cut off, the hydraulic anchor can be lowered to the designed depth, the problem of midway anchoring of the hydraulic anchor can be solved, economic loss can be avoided, and remarkable economic benefits are achieved.
Drawings
Fig. 1 is an assembly drawing of the present invention.
Detailed Description
An embodiment of the present invention will be described below with reference to fig. 1.
As shown in fig. 1, the embodiment of the present invention comprises an anchor body 1, an upper seal ring 2, an inner sleeve 3, an inner seal ring 4, a constant pressure sleeve 5, a pin 6, an outer seal ring 7, a lower joint 8, and a fluke 9, wherein the anchor body 1 is provided with an anchor hole, the fluke 9 is installed in the anchor hole of the anchor body 1, the inner sleeve 3 is installed in the anchor body 1, the upper seal ring 2 is arranged between the outer wall of the upper part of the inner sleeve 3 and the inner wall of the anchor body 1, the upper seal ring 2 is arranged above the anchor hole of the anchor body 1, the upper seal ring 2 seals the gap between the outer wall of the upper part of the inner sleeve 3 and the inner wall of the anchor body 1, so that fluid cannot enter the anchor hole of the anchor body 1 through the upper part of the inner sleeve 3, the lower outer part of the inner sleeve 3 is provided with a large diameter section, the constant pressure sleeve 5 is installed in the upper part of the lower joint 8, the lower end face of the constant pressure sleeve 5 is positioned on the shoulder of the upper inner hole of the lower joint 8, an outer sealing ring 7 is arranged between the outer wall of the lower part of the constant pressure sleeve 5 and the inner wall of the upper part of the lower joint 8, the outer sealing ring 7 seals a gap between the outer wall of the lower part of the constant pressure sleeve 5 and the inner wall of the upper part of the lower joint 8, the constant pressure sleeve 5 is fixed on the lower joint 8 by a pin 6, the upper part of the lower joint 8 is connected with the lower part of the anchor body 1, the connection part keeps sealed, the constant pressure sleeve 5 is sleeved outside the large-diameter section of the lower outer part of the inner sleeve 3, an inner sealing ring 4 is arranged between the inner wall of the upper part of the constant pressure sleeve 5 and the large-diameter section of the lower outer part of the inner sleeve 3, under the action of the inner sealing ring 4, fluid can not flow through the inner sealing ring 4, a certain distance is reserved between the upper end of the constant pressure sleeve 5 and the shoulder of the inner hole at the lower part of the anchor body 1, when the constant pressure sleeve 5 moves upwards until the upper end surface of the constant pressure sleeve contacts with the shoulder of the inner hole at the lower part of the anchor body 1, the inner seal ring 4 is separated from the lower outer large-diameter section of the inner sleeve 3, so that fluid can flow into the anchor hole on the anchor body 1 from the inner part of the inner sleeve 3. The lower part of the inner sleeve 3 is provided with a communicating groove 3-1, and the communicating groove 3-1 is positioned below the inner sealing ring 4.
The mounting, sealing and fixing modes of the fluke 9 on the anchor body 1 are the same as those of the existing hydraulic anchor, and the fluke is provided with a screw, a pressing strip, a spring and a sealing ring. The fluke 9 is reset by a spring, the outer surface of the fluke 9 is provided with teeth which can protrude out of the outer surface of the anchor body 1, and the structure of the anchor is the same as that of the existing hydraulic anchor.
The utility model discloses connect on the oil-well pump, go into the well along with the oil pumping tubular column, on the pump pressure can not transmit fluke 9's inner wall when going into the well, when oil pipe was suppressed to the pump, the standing valve of oil-well pump played the effect of airtight tubular column, the utility model discloses internal pressure risees, and pressure is used in the lower extreme of constant pressure cover 5, makes it produce ascending power, cuts pin 6, and constant pressure cover 5 is pushed to the lower part hole circular bead contact with anchor body 1, and at this moment, internal seal 4 leaves the big diameter section of the lower outside of endotheca 3, makes in the inside anchor eye that flows on anchor body 1 of fluid ability follow endotheca 3, on transmitting fluke 9's inner wall with pressure, pressure pushes out fluke 9, and anchoring is on the oil well casing, makes the oil pumping tubular column immobile, avoids the flexible bad consequence that causes of oil pipe. When the anchoring is not needed, the pressure of the oil well is balanced, the anchor claw is retracted under the action of the spring, the pipe column loses the anchoring, and the pipe column can be smoothly lifted out.
Claims (1)
1. The utility model provides a level pressure starts hydraulic anchor, includes anchor body (1), upper seal circle (2), endotheca (3), inner seal circle (4), level pressure cover (5), pin (6), outer seal circle (7), lower clutch (8), fluke (9), has the stock hole on anchor body (1), and install in the stock hole on anchor body (1) fluke (9), characterized by: the inner sleeve (3) is arranged in the anchor body (1), an upper sealing ring (2) is arranged between the outer wall of the upper part of the inner sleeve (3) and the inner wall of the anchor body (1), the upper sealing ring (2) is positioned above an anchor hole on the anchor body (1), the upper sealing ring (2) seals a gap between the outer wall of the upper part of the inner sleeve (3) and the inner wall of the anchor body (1) so that fluid cannot enter the anchor hole on the anchor body (1) through the upper part of the inner sleeve (3), the lower outer part of the inner sleeve (3) is provided with a large-diameter section, the constant pressure sleeve (5) is arranged in the upper part of the lower joint (8), an outer sealing ring (7) is arranged between the outer wall of the lower part of the constant pressure sleeve (5) and the inner wall of the upper part of the lower joint (8), the constant pressure sleeve (5) is fixed on the lower joint (8) through a pin (6), the upper portion of lower clutch (8) is connected with the lower portion of anchor body (1), make the cover (5) suit outside the big diameter section of the lower outside of endotheca (3) of constant pressure, there is interior sealing washer (4) between the big diameter section of the upper portion inner wall of cover (5) and the lower outside of endotheca (3) of constant pressure, under the effect of interior sealing washer (4), fluid can not pass through interior sealing washer (4) and circulate, there is certain distance between the upper end of cover (5) and the lower part hole circular bead of anchor body (1), when constant pressure cover (5) upward to its up end and the contact of the lower part hole circular bead of anchor body (1), interior sealing washer (4) leave the big diameter section of the lower outside of endotheca (3), make fluid can flow to the anchor hole on the anchor body (1) from the inside of endotheca (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022286380.3U CN213980717U (en) | 2020-10-14 | 2020-10-14 | Constant-pressure starting hydraulic anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022286380.3U CN213980717U (en) | 2020-10-14 | 2020-10-14 | Constant-pressure starting hydraulic anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980717U true CN213980717U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022286380.3U Active CN213980717U (en) | 2020-10-14 | 2020-10-14 | Constant-pressure starting hydraulic anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213980717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370316A (en) * | 2022-09-01 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | Double-anchoring high-pressure packer |
-
2020
- 2020-10-14 CN CN202022286380.3U patent/CN213980717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370316A (en) * | 2022-09-01 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | Double-anchoring high-pressure packer |
| CN115370316B (en) * | 2022-09-01 | 2024-05-28 | 惟其信石油机械(天津)有限公司 | Double-anchoring high-pressure packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A constant pressure starting hydraulic anchor Effective date of registration: 20230717 Granted publication date: 20210817 Pledgee: Industrial and Commercial Bank of China Limited Dongying New Area sub branch Pledgor: SHANDONG ZHAOXIN OIL TOOLS CO.,LTD. Registration number: Y2023980048562 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |