CN204186331U - Hydraulic piston type sand-preventing scale-preventing hydraulic anchor - Google Patents
Hydraulic piston type sand-preventing scale-preventing hydraulic anchor Download PDFInfo
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- CN204186331U CN204186331U CN201420642115.6U CN201420642115U CN204186331U CN 204186331 U CN204186331 U CN 204186331U CN 201420642115 U CN201420642115 U CN 201420642115U CN 204186331 U CN204186331 U CN 204186331U
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- central tube
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Abstract
The utility model relates to hydraulic anchor technical field, is a kind of hydraulic piston type sand-preventing scale-preventing hydraulic anchor; It comprises central tube, anchor body and anchoring device; Anchor body is installed with in the outside of central tube, the installing hole that at least two groups circumferentially distribute is interval with from top to bottom on the top of anchor body, being separately installed with in installing hole can the anchoring device of radial expansion, and anchoring device comprises and can stretch out and regain and realize the anchor fluke of grappling; Be provided with inner groovy in the bottom of anchor body and and form the pressure chamber that Open Side Down between central tube bottom.The utility model reasonable and compact in structure, easy to use; High-pressure fluid is by pressure effect to piston of pawling, and pawl descent of piston hydraulic oil in compression pressure chamber, promote anchor fluke by hydraulic oil and stretch out grappling; Can prevent water in high-pressure fluid or well from directly acting on anchor fluke, sand prevention antiscale, avoid anchor fluke to regain jam, effectively improve the unfreezing reliability of anchor fluke, reduce operating risk, high life.
Description
Technical field
the utility model relates to hydraulic anchor technical field, is a kind of hydraulic piston type sand-preventing scale-preventing hydraulic anchor.
Background technology
at present, in thick oil thermal extraction hydraulic booster fishing operation field, in order to enable hydraulic servo balance unfreezing, need to adopt reverse hydraulic anchor to carry out grappling to hydraulic servo; Normally used hydraulic anchor comprises the parts such as anchor body, anchor fluke and spring; Under the highly pressurised liquid effect of injecting, anchor fluke is released by back-moving spring radial direction, and anchor fluke can be stuck on tube inner wall firmly, plays the effect of grappling; By bleeding off the fluid pressure in oil pipe after finishing using, anchor fluke is automatically received and is added unfreezing under the action of the spring, can grappling fast and unfreezing, and reliability is high; But when using in heavy oil wells, because the median particle size of the sand in heavy oil wells is mostly less than0.1mm
, belong to flour sand and clay category, i.e. shale fine silt; When injecting highly pressurised liquid in well, fine sand in well to be mixed in high-pressure fluid and with entering in the anchor body of hydraulic anchor in high-pressure fluid, take care of the pence at the end of anchor fluke, cause hydraulic anchor anchor fluke normally cannot regain unfreezing, affect whole fishing string rotate, on carry, increase task difficulty and risk; When carrying on when not regained completely after card, tube inner wall can wear and tear anchor fluke pawl point, reduce anchor fluke grab wall, reduce the application life of anchor fluke; In addition, common hydraulic anchor as flow string long term in oil well or water injection well time, because the factors such as water quality inferiority in well also can cause fouling bottom hydraulic anchor anchor fluke, cause anchor fluke normally to regain, make working string meet card.
Summary of the invention
the utility model provides a kind of hydraulic piston type sand-preventing scale-preventing hydraulic anchor, overcome the deficiency of above-mentioned prior art, it effectively to solve in fine sand in high-pressure fluid and well the common hydraulic anchor of scale blockage in water, causes the anchor fluke of common hydraulic anchor to regain the problem of jam.
the technical solution of the utility model is realized by following measures: a kind of hydraulic piston type sand-preventing scale-preventing hydraulic anchor, comprises central tube, anchor body and anchoring device; Anchor body is installed with in the outside of central tube, the installing hole that at least two groups circumferentially distribute is interval with from top to bottom on the top of anchor body, being separately installed with in installing hole can the anchoring device of radial expansion, and anchoring device comprises and can stretch out and regain and realize the anchor fluke of grappling; Be provided with inner groovy in the bottom of anchor body and also and between central tube bottom form the pressure chamber that Open Side Down, in pressure chamber, be provided with the piston of pawling that can move up and down, the pressure chamber of piston underside of pawling is connected with central tube inside; At anchor body be provided with between central tube can by pressure chamber and installing hole the inner oily passage of mistake that be communicated with.
here is the further optimization and/or improvements to above-mentioned utility model technical scheme:
the sealing ring of central tube above the oily passage of above-mentioned mistake together with can being installed with between anchor body at least.
the anchor body inside of above-mentioned piston underside of pawling can be provided with breach and also and between central tube form the installation annular groove that Open Side Down, in installation annular groove, be provided with spacing cap; Be provided with the female cap mounting groove of band in the inside upper part of spacing cap, spacing cap is fixedly connected on central tube bottom by saturating cap mounting groove screw thread; Anchor body on the downside of spacing cap is provided with internal thread, and the interior lower end of anchor body is installed with spacing cap axially can be held out against spacing lower contact in installation annular groove by screw thread; Spacing cap is provided with the entrance pressure passage that central tube inside can be connected with pressure chamber.
the outer ring surface of above-mentioned spacing cap circle distribution can have at least one axial pass trough, and the spacing cap bottom corresponding with axial pass trough is provided with horizontal groove, and axial pass trough is connected with horizontal groove and forms entrance pressure passage.
above-mentioned anchoring device can comprise pressing plate and back-moving spring; In installing hole, be separately installed with anchor fluke, in the middle part of the outer end of anchor fluke, be respectively equipped with the pressing plate groove run through up and down, the anchor body corresponding with pressing plate groove is respectively equipped with axial pressing plate holddown groove; Pressing plate is installed with by trip bolt in pressing plate holddown groove; Anchor fluke is sleeved on pressing plate by pressing plate groove; Between pressing plate and pressing plate groove the inner, there is anchor fluke to move radially spacing and back-moving spring is installed; The central tube outer ring surface corresponding with anchor fluke is respectively equipped with outer groove, between outer groove with anchor body, forms the oily passage of the mistake be connected with pressure chamber.
the anchor body on above-mentioned pressure chamber top can be provided with oil filler point; The anchor body crossing pressure passageway outer end is provided with steam vent; Be provided with screw thread in the inside of oil filler point and steam vent, in oil filler point and steam vent, be separately installed with seal plug by screw thread; Or/and the anchor body above central tube is provided with conical internal thread wide at the top and narrow at the bottom; Conical external screw thread wide at the top and narrow at the bottom is provided with in the downside of lower contact.
the utility model reasonable and compact in structure, easy to use; High-pressure fluid is by pressure effect to piston of pawling, and pawl descent of piston hydraulic oil in compression pressure chamber, promote anchor fluke by hydraulic oil and stretch out grappling; Can prevent water in high-pressure fluid or well from directly acting on anchor fluke, sand prevention antiscale, avoid anchor fluke to regain jam, effectively improve the unfreezing reliability of anchor fluke, reduce operating risk, high life.
Accompanying drawing explanation
accompanying drawing 1 is the broken section structural representation of the utility model most preferred embodiment.
coding in accompanying drawing is respectively: manage centered by 1,2 is anchor body, and 3 is installing hole, 4 is pressure chamber, and 5 is piston of pawling, and 6 was oily passage, 7 is sealing ring, and 8 is spacing cap, and 9 is lower contact, 10 is entrance pressure passage, and 11 is oil filler point, and 12 is steam vent, 13 is back-moving spring, and 14 is anchor fluke, and 15 is trip bolt, 16 is pressing plate, and 17 is pressing plate groove.
Detailed description of the invention
the utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, this hydraulic piston type sand-preventing scale-preventing hydraulic anchor comprises central tube 1, anchor body 2 and anchoring device; Anchor body 2 is installed with in the outside of central tube 1, the installing hole 3 that at least two groups circumferentially distribute is interval with from top to bottom on the top of anchor body 2, being separately installed with in installing hole 3 can the anchoring device of radial expansion, and anchoring device comprises and can stretch out and regain and realize the anchor fluke 14 of grappling; Be provided with inner groovy in the bottom of anchor body 2 and also and between central tube 1 bottom form the pressure chamber 4 that Open Side Down, in pressure chamber 4, be provided with the piston 5 of pawling that can move up and down, the pressure chamber 4 on the downside of piston 5 of pawling is connected with central tube 1 inside; The oily passage 6 of mistake that pressure chamber 4 can be communicated with installing hole 3 the inner is provided with between anchor body 2 with central tube 1.Anchoring device can adopt the flexible anchor fluke structure in existing known hydraulic anchor; At pressure chamber 4, cross filling liquid force feed in oily passage 6 and installing hole 3; The high-pressure fluid injected into well enters in pressure chamber 4 through central tube 1, and piston 5 of pawling is up, makes the hydraulic oil pressurized of pressure chamber 4 li, and pressure passes to the anchor fluke 14 of anchoring device by hydraulic oil, for anchor fluke 14 grappling of anchoring device provides power; This mode by hydraulic oil transmission of pressure, can avoid high pressure fluid to directly act on the anchor fluke 14 of anchoring device, prevents the fine sand because being mixed with in high-pressure fluid from blocking anchor fluke 14 and reclaims unfreezing; When the utility model also can be avoided to use in well for a long time as flow string simultaneously, in the well flowing through central tube 1, water penetrates in anchoring device and causes anchor fluke to regain jam, sand-preventing scale-preventing, improve the unfreezing reliability of anchoring device, reduce operating risk, practical, improve the application life of anchor fluke 14.
according to actual needs, above-mentioned hydraulic piston type sand-preventing scale-preventing hydraulic anchor can be made further optimization and/or improvements:
as shown in Figure 1, the sealing ring 7 of central tube 1 together with being installed with at least between anchor body 2 above oily passage 6 is crossed.Sealing ring 7 plays the effect increasing sealing between anchor body 2 and central tube 1 above anchoring device; Prevent the high-pressure fluid of mulling from entering oily passage 6, reduce sand grains to the wearing and tearing of anchor fluke 14, improve the reliability of unfreezing.
as shown in Figure 1, anchor body 2 inside on the downside of piston 5 of pawling is provided with breach and also and between central tube 1 forms the installation annular groove that Open Side Down, in installation annular groove, be provided with spacing cap 8; Be provided with the female cap mounting groove of band in the inside upper part of spacing cap 8, spacing cap 8 is fixedly connected on central tube 1 bottom by saturating cap mounting groove screw thread; Anchor body 2 on the downside of spacing cap 8 is provided with internal thread, and the interior lower end of anchor body 2 is installed with spacing cap 8 axially can be held out against spacing lower contact 9 in installation annular groove by screw thread; Spacing cap 8 is provided with the entrance pressure path 10 that central tube 1 inside can be connected with pressure chamber 4.The dismounting between central tube 1 and anchor body 2 can be convenient to like this, easy to operate; During use, high-pressure fluid can be entered in pressure chamber 4 by entrance pressure path 10.
as shown in Figure 1, anchoring device also comprises pressing plate 16 and back-moving spring 13; In installing hole 3, be separately installed with anchor fluke 14, in the middle part of the outer end of anchor fluke 14, be respectively equipped with the pressing plate groove 17 run through up and down, the anchor body 2 corresponding with pressing plate groove 17 is respectively equipped with axial pressing plate holddown groove; Pressing plate 16 is installed with by trip bolt 15 in pressing plate holddown groove; Anchor fluke 14 is sleeved on pressing plate 16 by pressing plate groove 17; Between pressing plate 16 and pressing plate groove 17 the inner, there is anchor fluke to move radially spacing and back-moving spring 13 is installed; Central tube 1 outer ring surface corresponding with anchor fluke 14 is respectively equipped with outer groove, between outer groove with anchor body 2, forms the oily passage 6 of the mistake be connected with pressure chamber 4.Pressure acts on anchor fluke 14 by hydraulic oil, and anchor fluke 14 compression reseting spring extends radially out installing hole 3 and is anchored on internal surface of sleeve pipe; During deblocking, anchor fluke 14 is regained under the elastic force effect of back-moving spring, removes grappling.
as shown in Figure 1, on the outer ring surface of spacing cap 8, circle distribution has at least one axial pass trough, and spacing cap 8 bottom corresponding with axial pass trough is provided with horizontal groove, and axial pass trough is connected with horizontal groove and forms entrance pressure path 10.
as shown in Figure 1, the anchor body 2 on pressure chamber 4 top is provided with oil filler point 11; The anchor body 2 crossing pressure passageway outer end is provided with steam vent 12; Be provided with screw thread in the inside of oil filler point 11 and steam vent 12, in oil filler point 11 and steam vent 12, be separately installed with seal plug by screw thread.Oil filler point 11 plays to be convenient to artificially to pressure chamber 4, the effect of crossing oily passage 6 and installing hole 3 injection liquid force feed; Steam vent 12 can be drained the gas in oily passage 6, played the effect of the running resistance reducing piston 5 of pawling; Seal plug can by oil filler point 11 and steam vent 12 shutoff, need not oiling and exhaust time, by seal plug shutoff, prevent impurity from entering.
as shown in Figure 1, the anchor body 2 above central tube 1 is provided with conical internal thread wide at the top and narrow at the bottom; Conical external screw thread wide at the top and narrow at the bottom is provided with in the downside of lower contact 9.The utility model can be convenient to and other devices are installed by the screw thread on the downside of conical internal thread on the upside of anchor body 2 and lower contact 9, easy for installation.
above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
the use procedure of the utility model most preferred embodiment:
in use first by filling liquid force feed in pressure chamber 4, excessively oily passage 6 and installing hole 3; Again by anchor body 2 and hydraulic booster release device, drag for lance etc. be connected after together G.I.H; In time dragging for lance and catch bottom hole falling article, well head pitching, injects high-pressure fluid; High-pressure fluid central tube 1 enters in pressure chamber 4, and piston 5 of pawling is up, and make the hydraulic oil pressurized of pressure chamber 4 li, pressure passes to anchor fluke 14 by hydraulic oil; Anchor fluke 14 compression reseting spring 13 also extends radially out installing hole 3, and the outer end pawl point of anchor fluke 14 is stuck on internal surface of sleeve pipe, thus realizes the utility model and the grappling of underground hydraulic pressure booster, plays the effect providing balancing axial thrust; During unfreezing, anchor fluke 14 is regained under the elastic force effect of back-moving spring, removes grappling.
Claims (10)
1. a hydraulic piston type sand-preventing scale-preventing hydraulic anchor, is characterized in that comprising central tube, anchor body and anchoring device; Anchor body is installed with in the outside of central tube, the installing hole that at least two groups circumferentially distribute is interval with from top to bottom on the top of anchor body, being separately installed with in installing hole can the anchoring device of radial expansion, and anchoring device comprises and can stretch out and regain and realize the anchor fluke of grappling; Be provided with inner groovy in the bottom of anchor body and also and between central tube bottom form the pressure chamber that Open Side Down, in pressure chamber, be provided with the piston of pawling that can move up and down, the pressure chamber of piston underside of pawling is connected with central tube inside; At anchor body be provided with between central tube can by pressure chamber and installing hole the inner oily passage of mistake that be communicated with.
2. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 1, is characterized in that the sealing ring of central tube together with being installed with at least between anchor body above oily passage.
3. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 1 and 2, the anchor body inside of the piston underside that it is characterized in that pawling be provided with breach and and forms the installation annular groove that Open Side Down between central tube, spacing cap is installed installing in annular groove; Be provided with the female cap mounting groove of band in the inside upper part of spacing cap, spacing cap is fixedly connected on central tube bottom by saturating cap mounting groove screw thread; Anchor body on the downside of spacing cap is provided with internal thread, and the interior lower end of anchor body is installed with spacing cap axially can be held out against spacing lower contact in installation annular groove by screw thread; Spacing cap is provided with the entrance pressure passage that central tube inside can be connected with pressure chamber.
4. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 3, on the outer ring surface that it is characterized in that spacing cap, circle distribution has at least one axial pass trough, the spacing cap bottom corresponding with axial pass trough is provided with horizontal groove, and axial pass trough is connected with horizontal groove and forms entrance pressure passage.
5. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 1 and 2, is characterized in that anchoring device comprises pressing plate and back-moving spring; In installing hole, be separately installed with anchor fluke, in the middle part of the outer end of anchor fluke, be respectively equipped with the pressing plate groove run through up and down, the anchor body corresponding with pressing plate groove is respectively equipped with axial pressing plate holddown groove; Pressing plate is installed with by trip bolt in pressing plate holddown groove; Between pressing plate and pressing plate groove the inner, there is anchor fluke to move radially spacing and back-moving spring is installed; The central tube outer ring surface corresponding with anchor fluke is respectively equipped with outer groove, between outer groove with anchor body, forms the oily passage of the mistake be connected with pressure chamber.
6. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 4, is characterized in that anchoring device comprises pressing plate and back-moving spring; In installing hole, be separately installed with anchor fluke, in the middle part of the outer end of anchor fluke, be respectively equipped with the pressing plate groove run through up and down, the anchor body corresponding with pressing plate groove is respectively equipped with axial pressing plate holddown groove; Pressing plate is installed with by trip bolt in pressing plate holddown groove; Anchor fluke is sleeved on pressing plate by pressing plate groove; Between pressing plate and pressing plate groove the inner, there is anchor fluke to move radially spacing and back-moving spring is installed; The central tube outer ring surface corresponding with anchor fluke is respectively equipped with outer groove, between outer groove with anchor body, forms the oily passage of the mistake be connected with pressure chamber.
7. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 1 and 2, the anchor body that it is characterized in that pressure chamber top can be provided with oil filler point; The anchor body crossing pressure passageway outer end is provided with steam vent; Be provided with screw thread in the inside of oil filler point and steam vent, in oil filler point and steam vent, be separately installed with seal plug by screw thread; Or/and the anchor body above central tube is provided with conical internal thread wide at the top and narrow at the bottom, is provided with conical external screw thread wide at the top and narrow at the bottom in the downside of lower contact.
8. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 3, the anchor body that it is characterized in that pressure chamber top can be provided with oil filler point; The anchor body crossing pressure passageway outer end is provided with steam vent; Be provided with screw thread in the inside of oil filler point and steam vent, in oil filler point and steam vent, be separately installed with seal plug by screw thread; Or/and the anchor body above central tube is provided with conical internal thread wide at the top and narrow at the bottom, is provided with conical external screw thread wide at the top and narrow at the bottom in the downside of lower contact.
9., according to the hydraulic piston type sand-preventing scale-preventing hydraulic anchor that claim 4 is stated, the anchor body that it is characterized in that pressure chamber top can be provided with oil filler point; The anchor body crossing pressure passageway outer end is provided with steam vent; Be provided with screw thread in the inside of oil filler point and steam vent, in oil filler point and steam vent, be separately installed with seal plug by screw thread; Or/and the anchor body above central tube is provided with conical internal thread wide at the top and narrow at the bottom, is provided with conical external screw thread wide at the top and narrow at the bottom in the downside of lower contact.
10. hydraulic piston type sand-preventing scale-preventing hydraulic anchor according to claim 5, the anchor body that it is characterized in that pressure chamber top can be provided with oil filler point; The anchor body crossing pressure passageway outer end is provided with steam vent; Be provided with screw thread in the inside of oil filler point and steam vent, in oil filler point and steam vent, be separately installed with seal plug by screw thread; Or/and the anchor body above central tube is provided with conical internal thread wide at the top and narrow at the bottom, is provided with conical external screw thread wide at the top and narrow at the bottom in the downside of lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642115.6U CN204186331U (en) | 2014-10-31 | 2014-10-31 | Hydraulic piston type sand-preventing scale-preventing hydraulic anchor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642115.6U CN204186331U (en) | 2014-10-31 | 2014-10-31 | Hydraulic piston type sand-preventing scale-preventing hydraulic anchor |
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| CN204186331U true CN204186331U (en) | 2015-03-04 |
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| CN201420642115.6U Active CN204186331U (en) | 2014-10-31 | 2014-10-31 | Hydraulic piston type sand-preventing scale-preventing hydraulic anchor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441382A (en) * | 2018-12-28 | 2019-03-08 | 易鲁川 | A kind of hydraulic anchor |
| CN110965951A (en) * | 2019-11-27 | 2020-04-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Large-drift-diameter hydraulic anchor and using method thereof |
| CN111502610A (en) * | 2020-05-29 | 2020-08-07 | 西安石油大学 | Mechanical vibration damper for perforating section pipe column |
-
2014
- 2014-10-31 CN CN201420642115.6U patent/CN204186331U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441382A (en) * | 2018-12-28 | 2019-03-08 | 易鲁川 | A kind of hydraulic anchor |
| CN110965951A (en) * | 2019-11-27 | 2020-04-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Large-drift-diameter hydraulic anchor and using method thereof |
| CN110965951B (en) * | 2019-11-27 | 2024-01-23 | 中国石油天然气集团有限公司 | Large-drift-diameter hydraulic anchor and use method thereof |
| CN111502610A (en) * | 2020-05-29 | 2020-08-07 | 西安石油大学 | Mechanical vibration damper for perforating section pipe column |
| CN111502610B (en) * | 2020-05-29 | 2021-11-30 | 西安石油大学 | Mechanical vibration damper for perforating section pipe column |
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