CN203321362U - Hydraulic type casing centralizer - Google Patents
Hydraulic type casing centralizer Download PDFInfo
- Publication number
- CN203321362U CN203321362U CN2013202896700U CN201320289670U CN203321362U CN 203321362 U CN203321362 U CN 203321362U CN 2013202896700 U CN2013202896700 U CN 2013202896700U CN 201320289670 U CN201320289670 U CN 201320289670U CN 203321362 U CN203321362 U CN 203321362U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- centralizer
- sleeve
- strengthening tablets
- locating piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a hydraulic type casing centralizer which comprises a centralizer body of which the axis extends in the vertical direction. An upper sliding sleeve and a lower sliding sleeve which are driven by corresponding piston devices and can move face to face or back to back along the centralizer body are arranged at the upper end and the lower end of the centralizer body respectively in a sleeved mode. An elastic centralization sheet is connected between the upper sliding sleeve and the lower sliding sleeve in a bridge mode. At least one locating block is rotatably assembled on the centralizer body in a fixed or axially limited mode, the locating block exerts radial inward acting force on the elastic centralization sheet. A locating ring is arranged on the centralizer body so that the centralizer body can be extruded, the elastic centralization sheet which expands in the radial direction can form at least two bows at intervals so as to centralize a casing, and the supporting centralization force of the centralizer increases. The hydraulic type casing centralizer is simple in structure, easy to machine and low in machining cost.
Description
Technical field
The utility model relates to a kind of centralizer, relates in particular to a kind of hydraulic casing centralizer.
Background technology
High-inclination directional well and horizontal well technology have become the important support of each major oil and gas field " few well high yield " both at home and abroad, but be subject to the useless impacts of characteristics such as its large gradient, long bore hole, hold angle well segment length, hole angle are large, under Action of Gravity Field, bunch tube is close to the lower borehole wall entering high angle hole Duan Houhui, can lie in the lower borehole wall fully at the net horizontal section bunch tube especially, cause sleeve pipe can not be between two parties, the cement sheath became uneven is even, has a strong impact on cementing quality.At present, casing stabbing board commonly used mainly contains rigid centralizer and elastic centralizer.Rigid centralizer is processing linear or spiral fluid passage on thick walled steel tube, form the centralizer of straight line or spiral righting rib, this rigid centralizer external diameter is subject to upper strata casing inner diameter restriction, limited to the casing centralization effect, and particularly hole diameter expansion well segment base does not originally have centralizing function; Elastic centralizer is that some arc elasticity body resistance-strengthening tablets are uniformly distributed the centralizer that is the lantern housing, the outside dimension of this centralizer can radially stretch, when sleeve pipe during down to high angle hole section and net horizontal section, under gravity and flecition, elastic centralizer is close to the lower borehole wall, the elasticity body resistance-strengthening tablets is descending under pressured state for a long time, easily cause the elasticity body resistance-strengthening tablets to straighten damage, and the elastic centralizer outside dimension equals theoretical mineshaft diameter size, centralizer can cause that bunch tube is lowered to difficulty while contacting with the irregular borehole borehole wall.
For the problems referred to above, the Chinese patent application of notice of authorization CN 201650147U discloses that a kind of its elasticity body resistance-strengthening tablets just can projection and support the hydraulic casing centralizer of righting sleeve pipe after sleeve pipe is lowered into assigned address, this centralizer comprises body, the upper and lower two ends of body are arranged with respectively upper sliding sleeve and the low sleeve that body moves up and down relatively, be provided with the elasticity body resistance-strengthening tablets in the middle of upper sliding sleeve and low sleeve, on the elasticity body resistance-strengthening tablets, lower end difference banding is on upper sliding sleeve and low sleeve, be respectively equipped with self-locking structure on body and upper sliding sleeve and low sleeve, the wedge shape pawl that self-locking structure is mutual interlock, on the body perisporium, offer for highly pressurised liquid is flowed into, in annular hydraulic cavities between low sleeve and body in order on promoting, the inlet opening that low sleeve moves up and down, on, on low sleeve, be respectively equipped with upper, spacing limit baffle ring is carried out in the axially-movable of low sleeve.This centralizer is in tandem in bunch tube, after sleeve pipe is lowered into assigned address, turn on pump is suppressed, and highly pressurised liquid enters in the annular hydraulic cavities between upper and lower sliding sleeve and body by inlet opening, and highly pressurised liquid promotes upper and lower sliding sleeve relative motion, upper low sleeve extruding is positioned at the elasticity body resistance-strengthening tablets in the middle of both, the elasticity body resistance-strengthening tablets constantly radially expands into arc body, until be pressed against on the borehole wall, sleeve pipe is pushed into to the well center, wedge shape pawl self-locking by mutual interlock, prevent the resilience of elasticity body resistance-strengthening tablets.This centralizer elasticity body resistance-strengthening tablets in use is subject to the extruding of low sleeve and forms a footpath convex arc body to casing centering, supports uprighting force little, the righting poor effect.
The utility model content
The purpose of this utility model is to propose a kind of simple in structure and large hydraulic casing centralizer of support uprighting force.
For addressing the above problem, the technical solution adopted in the utility model is:
A kind of hydraulic casing centralizer, comprise the body that axis extends along the vertical direction, the body upper and lower end is arranged with respectively, upper sliding sleeve and low sleeve that can along body relatively or contrarily move that drive by the respective pistons device, the flexible body resistance-strengthening tablets of bridge joint between upper sliding sleeve and low sleeve, on described body, fixing or axial limiting is rotatably equipped with at least one for the elasticity body resistance-strengthening tablets being applied to the radially locating piece of block effect.
Described locating piece is provided with the positional punch for sliding through for the elasticity body resistance-strengthening tablets, and the hole wall of described positional punch and elasticity body resistance-strengthening tablets are slidably matched in the axial direction, and block coordinates diametrically.
Described locating piece is the circulus be set on body, and described positional punch is a plurality of around circumferentially being evenly equipped with of described locating piece.
Described body is provided with for the upper baffle ring to the locating piece axial limiting and lower baffle ring in the two ends up and down of described locating piece.
The upper hoop and the lower hoop that also comprise the annular space laid respectively between described upper sliding sleeve, low sleeve and body, described elasticity body resistance-strengthening tablets upper and lower side is fixedly connected with upper and lower hoop respectively, between described upper hoop, lower hoop and body, gap is rotatably assorted, and between described locating piece and body, gap is rotatably assorted.
On described upper sliding sleeve and low sleeve, be equipped with for preventing the self-locking structure of elasticity body resistance-strengthening tablets resilience, described self-locking structure is the wedge shape annular groove that upper sliding sleeve and low sleeve are offered near body one side, be provided with ball in described wedge shape annular groove, the diameter of the wedge shape annular groove of described upper sliding sleeve is up-small and down-big, and the diameter of the wedge shape annular groove of described low sleeve is up big and down small.
On the body of hydraulic casing centralizer of the present utility model, fixing or axial limiting is rotatably equipped with for the elasticity body resistance-strengthening tablets being applied to the radially locating piece of block effect, when upper sliding sleeve and low sleeve push along the body relative motion elasticity body resistance-strengthening tablets bridged between the two under the respective pistons device drives, the elasticity body resistance-strengthening tablets radially expands, because locating piece can apply radially block effect to the elasticity body resistance-strengthening tablets, the elasticity body resistance-strengthening tablets of the piece retainer portion that therefore is positioned can not radially expand, and the elasticity body resistance-strengthening tablets in the locating piece both sides owing to being squeezed the expanded radially archwise, thereby can produce the arc of at least two outwardly convexs for supporting sleeve, arch support is on the borehole wall and force sleeve pipe in the well center.The utility model arrange on body that locating ring makes to be squeezed and the elasticity body resistance-strengthening tablets that radially expands can interval form at least two arc with the righting sleeve pipe, the support uprighting force of centralizer is increased, and the utility model is simple in structure, be convenient to processing, processing cost is low.
Further, the hole wall of the positional punch on locating piece and elasticity body resistance-strengthening tablets are slidably matched in the axial direction, therefore when upper sliding sleeve and the suffered fluid pressure inequality of low sleeve, the large side that is stressed can promote the elasticity body resistance-strengthening tablets and slide to the less end that is stressed, and constantly adjust, finally make the elasticity body resistance-strengthening tablets of locating piece both sides stressed evenly, can avoid making the arc holding capacity of the stressed larger side of elasticity body resistance-strengthening tablets large because pressure at both sides is uneven, and arc not holding capacity or the holding capacity of a stressed less side are little, or make the elasticity body resistance-strengthening tablets is fractureed when excessive when a lateral pressure.
Further, offer a plurality of positional punches that pass for the elasticity body resistance-strengthening tablets on locating piece, while avoiding the elasticity body resistance-strengthening tablets to be squeezed, the elasticity body resistance-strengthening tablets circumferentially slides and twists off around body when being squeezed.
Further, locating ring, upper hoop, lower hoop all adopt gap to be rotatably assorted with body, avoid sleeve rotating and make the elasticity body resistance-strengthening tablets be subject to torsion even to twist off.
The accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of a kind of hydraulic casing centralizer of the utility model.
The specific embodiment
Embodiment: the specific embodiment below in conjunction with accompanying drawing to the present embodiment is elaborated, and is illustrated in figure 1 the structural representation of embodiment of the present utility model:
Hydraulic casing centralizer, comprise the open column shape body 1 extended along the vertical direction, the body upper and lower side is respectively equipped with the external screw thread for being connected with the respective sleeve post, body is outside upper, lower end is respectively arranged with fluid cylinder 4 and lower fluid cylinder 19, on, lower fluid cylinder and body are threaded connection, on, lower fluid cylinder is connected with respectively upper sliding sleeve 3 and low sleeve 17 by upper shear pin 2 and down cut pin 18, upper sliding sleeve and upper fluid cylinder, low sleeve and lower fluid cylinder and on, between low sleeve and body, all by sealing ring, be sealed and matched, upper sliding sleeve, form upper annular hydraulic cavities between upper fluid cylinder and body, low sleeve, form lower annular hydraulic cavities between lower fluid cylinder and body, body circumferentially is evenly equipped with along it upper inlet opening 5 be communicated with upper annular hydraulic cavities respectively, the lower inlet opening 16 be communicated with lower annular hydraulic cavities, be set with hoop 7 on the body of upper sliding sleeve below, be set with lower hoop 14 on the body of low sleeve top, on, lower hoop and this body space are rotatably assorted, body is in upper, the place, centre position of lower hoop is arranged with locating ring 11, locating ring 11 is rotatably assorted with this body space, on locating ring, on the body of below, be respectively arranged with for locating ring 11 being carried out to upper baffle ring 10 and the lower baffle ring 12 of axial limiting, on, be provided with a plurality of elasticity body resistance-strengthening tablets 9 between lower hoop, elasticity body resistance-strengthening tablets 9 is circumferentially uniform along body, each elasticity body resistance-strengthening tablets upper end is fixed on hoop, lower end is fixed on lower hoop through locating ring 11, body is between upper hoop 7 and upper baffle ring 10, between lower hoop 14 and lower baffle ring 12, be respectively arranged with for to, low sleeve moves axially spacing upper limit baffle ring 8 and lower limit baffle ring 13, for preventing after the sleeve pipe pressure release, the resilience of elasticity body resistance-strengthening tablets, also be provided with self-locking structure, self-locking structure comprises the lower self-locking structure 15 arranged on the upper self-locking structure 6 that arranges on upper sliding sleeve and low sleeve, self-locking structure is the wedge shape annular groove of offering on upper sliding sleeve and low sleeve, the upper end diameter of the wedge shape annular groove of upper self-locking structure is little, lower end diameter is large, the upper end diameter of the wedge shape annular groove of lower self-locking structure is large, lower end diameter is little, is provided with several steel balls in the wedge shape annular groove.
During use, at first the screw thread by the upper and lower two ends of body is connected to this hydraulic casing centralizer in bunch tube, and now the elasticity body resistance-strengthening tablets is in the state of not being squeezed, and diameter and the casing diameter of centralizer are almost equal, thus sleeve pipe to be lowered to resistance little.After sleeve pipe is transferred to assigned address, turn on pump is suppressed, highly pressurised liquid enters respectively upper annular hydraulic cavities and lower annular hydraulic cavities by upper inlet opening 5 and the lower inlet opening 16 arranged on body, along with upper, the increase of lower annular hydraulic cavities internal pressure, upper sliding sleeve is produced to downward active force, low sleeve is produced to active force upwards, after pressure increases to certain value, on, the down cut pin is cut off, upper sliding sleeve promotes upper hoop and moves downward, low sleeve promotes lower hoop and moves upward, along with upper, the continuous move toward one another of low sleeve, each elasticity body resistance-strengthening tablets is extruded and radially expands, due to the ring restriction that is positioned in the middle of each elasticity body resistance-strengthening tablets, therefore each elasticity body resistance-strengthening tablets is extruded the bow body that forms two outwardly convexs and pushes up and is pressed on the borehole wall, force casing centralization, two arc centralizing function power of righting are larger, the righting better effects if, when pressure balance or upper hoop 7, lower hoop 14 is subject to respectively upper limit baffle ring 8, during the stopping of lower limit baffle ring 13, the sleeve pipe pressure release, the resilience under self elastic force effect of each elasticity body resistance-strengthening tablets, thereby promoting upper sliding sleeve 3 moves upward, low sleeve 17 moves downward, steel ball in the wedge shape annular groove of upper sliding sleeve moves up with upper sliding sleeve, steel ball in the wedge shape annular groove of low sleeve moves down with low sleeve, because the cambridge ring cover of upper self-locking structure is up-small and down-big, the wedge shape annular groove of lower self-locking structure is up big and down small, therefore the wedge shape annular groove steel ball inner with it forms self-locking structure and upper sliding sleeve and low sleeve is locked on body, guarantee that sleeve pipe is all the time in borehole position.Upper hoop, lower hoop and locating ring and this body space are rotatably assorted, and can avoid sleeve rotating and make the elasticity body resistance-strengthening tablets be subject to twisting resistance even twisting off.
Positional punch on locating piece and elasticity body resistance-strengthening tablets are slidably matched in the axial direction in the present embodiment, in other embodiment of the present utility model, also can make positional punch and elasticity body resistance-strengthening tablets fix and the elasticity body resistance-strengthening tablets can not be slided in positional punch.
Locating piece in the present embodiment is the locating ring be set on body, locating ring circumferentially is laid with the positional punch for the elasticity body resistance-strengthening tablets is passed along it, also can adopt a sheathed banding cover outside body in other embodiment of the present utility model, the elasticity body resistance-strengthening tablets is passed from the space between banding cover and body, banding cover inwall and body outer wall and elasticity body resistance-strengthening tablets are slidably connected, and the banding cover is applied radially block effect to the elasticity body resistance-strengthening tablets by the banding place.
Be provided with in the present embodiment a locating ring, also can arrange as required more than two in other embodiment of the present utility model.
In the present embodiment the two ends of elasticity body resistance-strengthening tablets are fixedly connected on upper hoop and lower hoop, hoop and lower hoop also can be set in other embodiment of the present utility model, but the elasticity body resistance-strengthening tablets directly is connected on upper sliding sleeve or low sleeve.
Locating ring is set on body and with body and all adopts gap to be rotatably assorted in the present embodiment, in other embodiment of the present utility model, also locating ring can be fixedly installed on the body perisporium.
Self-locking structure is the steel ball arranged in the wedge shape annular groove that cooperatively interacts and groove in the present embodiment, the self-locking structure used also can adopt background technology in other embodiment of the present utility model in.
Claims (6)
1. a hydraulic casing centralizer, comprise the body that axis extends along the vertical direction, the body upper and lower end is arranged with respectively, upper sliding sleeve and low sleeve that can along body relatively or contrarily move that drive by the respective pistons device, the flexible body resistance-strengthening tablets of bridge joint between upper sliding sleeve and low sleeve is characterized in that: on described body, fixing or axial limiting is rotatably equipped with at least one for the elasticity body resistance-strengthening tablets being applied to the radially locating piece of block effect.
2. hydraulic casing centralizer according to claim 1, it is characterized in that: described locating piece is provided with the positional punch for sliding through for the elasticity body resistance-strengthening tablets, the hole wall of described positional punch and elasticity body resistance-strengthening tablets are slidably matched in the axial direction, and block coordinates diametrically.
3. hydraulic casing centralizer according to claim 2, it is characterized in that: described locating piece is the circulus be set on body, described positional punch is a plurality of around circumferentially being evenly equipped with of described locating piece.
4. fluid pressure type according to claim 3 is hitched centralizer, it is characterized in that: described body is provided with for the upper baffle ring to the locating piece axial limiting and lower baffle ring in the two ends up and down of described locating piece.
5. according to the described hydraulic casing centralizer of claim 1～4 any one, it is characterized in that: the upper hoop and the lower hoop that also comprise the annular space laid respectively between described upper sliding sleeve, low sleeve and body, described elasticity body resistance-strengthening tablets upper and lower side is fixedly connected with upper and lower hoop respectively, between described upper hoop, lower hoop and body, gap is rotatably assorted, and between described locating piece and body, gap is rotatably assorted.
6. hydraulic casing centralizer according to claim 5, it is characterized in that: on described upper sliding sleeve and low sleeve, be equipped with for preventing the self-locking structure of elasticity body resistance-strengthening tablets resilience, described self-locking structure is the wedge shape annular groove that upper sliding sleeve and low sleeve are offered near body one side, be provided with ball in described wedge shape annular groove, the diameter of the wedge shape annular groove of described upper sliding sleeve is up-small and down-big, and the diameter of the wedge shape annular groove of described low sleeve is up big and down small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202896700U CN203321362U (en) | 2013-05-24 | 2013-05-24 | Hydraulic type casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202896700U CN203321362U (en) | 2013-05-24 | 2013-05-24 | Hydraulic type casing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321362U true CN203321362U (en) | 2013-12-04 |
Family
ID=49660725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202896700U Expired - Lifetime CN203321362U (en) | 2013-05-24 | 2013-05-24 | Hydraulic type casing centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321362U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278955A (en) * | 2014-10-29 | 2015-01-14 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer with double hydraulic cylinders |
| CN104895509A (en) * | 2015-06-09 | 2015-09-09 | 甘肃兰金民用***高新技术公司 | Guiding and declination rectification device specially for underground pipeline transmission |
| CN113006725A (en) * | 2021-04-19 | 2021-06-22 | 东北石油大学 | Rolling shaping mechanism and sleeve shaping tool |
| CN113090191A (en) * | 2021-04-12 | 2021-07-09 | 中煤科工集团重庆研究院有限公司 | Drilling fixed-point hole protection method, device and construction process for complex zone of coal mine |
-
2013
- 2013-05-24 CN CN2013202896700U patent/CN203321362U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278955A (en) * | 2014-10-29 | 2015-01-14 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer with double hydraulic cylinders |
| CN104895509A (en) * | 2015-06-09 | 2015-09-09 | 甘肃兰金民用***高新技术公司 | Guiding and declination rectification device specially for underground pipeline transmission |
| CN113090191A (en) * | 2021-04-12 | 2021-07-09 | 中煤科工集团重庆研究院有限公司 | Drilling fixed-point hole protection method, device and construction process for complex zone of coal mine |
| CN113090191B (en) * | 2021-04-12 | 2022-07-22 | 中煤科工集团重庆研究院有限公司 | Drilling fixed-point hole protecting method, device and construction process for complex zone of coal mine |
| CN113006725A (en) * | 2021-04-19 | 2021-06-22 | 东北石油大学 | Rolling shaping mechanism and sleeve shaping tool |
| CN113006725B (en) * | 2021-04-19 | 2022-08-26 | 东北石油大学 | Rolling shaping mechanism and sleeve shaping tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203321362U (en) | Hydraulic type casing centralizer | |
| CN203847019U (en) | Limiting type hydraulic casing pipe straightening tool | |
| CN202215197U (en) | Quick drilling composite bridge plug for horizontal well | |
| CN104234647B (en) | Underground opening self-locking casing centering device | |
| CN102966327A (en) | Expansion pipe | |
| CN103485744B (en) | Directional well zonal injection centralizing packer | |
| CN104929561B (en) | Packer | |
| CN103850676A (en) | Novel casing coupling positioner for coiled tubing | |
| CN204024579U (en) | The expanding spacer ring of combined type packing element shoulder protector | |
| CN203452723U (en) | Double-tube double-slip high-pressure water injection packer | |
| CN102937008B (en) | Top multistage pressure-bearing expansion pipe expansion construction device | |
| CN105134072B (en) | The shaft bottom transfer and its construction method of super short radial horizontal well drilling well | |
| CN201650203U (en) | Double rubber-barrel isolation packer | |
| CN202745798U (en) | Directional well zonal injection centralizing packer | |
| CN203515413U (en) | Mechanical and hydraulic dual-action ground anchor assembly | |
| CN110485958A (en) | A kind of oil jacket annulus suppresses the tubing anchor set | |
| CN105484711A (en) | Rotational flow guiding device | |
| CN201386535Y (en) | Hydraulic isolator applicable to oil drilling and well completion | |
| CN204113166U (en) | Expansion type hanger | |
| CN103015935A (en) | Top-down pull rod type expansion pipe structure | |
| CN207144854U (en) | Hydraulic centralizing device | |
| CN202970706U (en) | Novel casing coupling positioner for coiled tubing | |
| CN105113975B (en) | A kind of drill carriage drill boom rock drill holds out against special universal three-jaw top pricker | |
| CN206830102U (en) | Buffer nipple for vibration well cementation | |
| CN213205608U (en) | Hydraulic anchor with adjustable anchoring pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term |