CN104373058B - Hydraulic casing centralizer - Google Patents
Hydraulic casing centralizer Download PDFInfo
- Publication number
- CN104373058B CN104373058B CN201410591067.7A CN201410591067A CN104373058B CN 104373058 B CN104373058 B CN 104373058B CN 201410591067 A CN201410591067 A CN 201410591067A CN 104373058 B CN104373058 B CN 104373058B
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- China
- Prior art keywords
- ring
- outside
- fixed cover
- casing
- axle sleeve
- Prior art date
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- 210000002445 nipple Anatomy 0.000 claims description 76
- 239000007788 liquid Substances 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 208000031481 Pathologic Constriction Diseases 0.000 claims description 2
- 210000001215 vagina Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010008 shearing Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of casing centralizers, in particular to a hydraulic casing centralizer. The hydraulic casing centralizer comprises a casing short section, a hydraulic cylinder, a back-stopping shaft sleeve and a spring piece, a lower limiting device is fixed to the outside of the lower portion of the casing short section, the back-stopping shaft sleeve is arranged on the outside of the lower portion of the casing short section in a sleeved mode, the outside of the lower portion of the back-stopping shaft sleeve is fixed to the upper portion of the lower limiting device, the lower portion of the hydraulic cylinder and the outside of the lower portion of the back-stopping shaft sleeve are fixedly installed together through a shearing pin, an annular boss is fixed to the inner side of the hydraulic cylinder above the back-stopping shaft sleeve, and the inner side of the annular boss and the outside of the middle of the sleeve short section are sleeved. The hydraulic casing centralizer is reasonable and compact in structure and convenient to use, a casing connected with the casing centralizer is in a centralized state due to the arrangement of a fixed check ring and the spring piece, the straightening effect of the casing is improved, well cementation quality is improved, the casing centralizer is prone to be put into a well and practicability of the hydraulic casing centralizer is improved.
Description
Technical field
The present invention relates to casing centering guide technical field, it is a kind of hydraulic casing pipe centering device.
Background technology
The quality of horizontal cementing quality directly restricts the oil production of later stage oil well, in well cementing operation, centralizer conduct
A kind of cementing tool, it has important effect to cementing quality, at present both at home and abroad more than well cementing operation using rigid centralizer and
, when net horizontal section is cemented the well using conventional centralizer setting of casing, there is righting in the conventional cannula centralizer such as rolling wheel centralizer
The problem that the frictional resistance entering under device is larger, sleeve pipe is not placed in the middle and cementing concrete ring thickness is uneven, when sleeve pipe is not placed in the middle, fall
The low righting effect to sleeve pipe for the centralizer, has had a strong impact on cementing quality, increased the wind that the later stage produces and operation oil gas is invaded
Danger.The development of China's domestic hydraulic centralizing device is scarcely out of swaddling-clothes, and the application at the scene of hydraulic centralizing device seldom, and is applied
Effect all less desirable.
Content of the invention
The invention provides a kind of hydraulic casing pipe centering device, overcome the deficiency of above-mentioned prior art, it can effectively solving
Existing casing stabbing board sleeve pipe problem not placed in the middle present in actual well cementing process.
The technical scheme is that and realized by following measures: a kind of hydraulic casing pipe centering device, short including sleeve pipe
Section, liquid cylinder, retaining axle sleeve and spring leaf, are fixed with lower caging device in the lower outside of casing nipple, and retaining axle sleeve is set with
In the lower outside of casing nipple, the lower outside of retaining axle sleeve is fixed together with lower caging device top, under liquid cylinder
Portion is fixedly installed togather by the shear pin no less than with the lower outside of retaining axle sleeve, in retaining above axle sleeve
It is fixed with annular boss inside liquid cylinder, be set in together outside the inner side of annular boss and the middle part of casing nipple, in annular
Form hydraulic cavities, in casing nipple between outside casing nipple between boss bottom and retaining axle sleeve top and inside liquid cylinder
On have at least one radial direction communicating with hydraulic cavities to enter fluid through-hole, the liquid cylinder above annular boss is fixed with first fixing
Set, is fixed with position limit device in casing nipple upper outside, the casing nipple between position limit device and the first fixed cover
Outside be fixed with fixing back-up ring, be distributed in outside casing nipple no less than a piece of spring leaf, each flat spring piece upper
Portion and bottom are fixed together with position limit device and the first fixed cover respectively, and the upper inner of each flat spring piece is pressed on admittedly
Determine the outside of back-up ring, have female thread or external screw thread on the top of casing nipple, have female thread or outer spiral shell in the bottom of casing nipple
Stricture of vagina.
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
External diameter can be had outside the middle part of above-mentioned retaining axle sleeve to be less than the first annular groove of liquid cylinder internal diameter, in retaining axle sleeve
Lower outside have the second annular groove communicating with first annular groove, the external diameter of the second annular groove is less than first annular recessed
The external diameter of groove, is installed with opening retaining ring in the bottom of first annular groove, and the lower inside of opening retaining ring is fixed with
Fastener, fastener is installed in the second annular groove, crown is distributed with from top to bottom upward in the outside of opening retaining ring
Saw-tooth thread, has fit inside the liquid cylinder above shear pin, and being provided with fit can be with opening retaining
The matching thread of the saw-tooth thread cooperation outside ring, saw-tooth thread is fastened togather with matching thread.
Above-mentioned lower caging device may include the 4th fixed cover and under shed baffle ring, the upper inner of the 4th fixed cover and retaining
The lower outside of axle sleeve is fixedly installed togather, and the 4th fixed cover lower inside below retaining axle sleeve has outer baffle ring to fix
Groove, has inner baffle ring fixing groove corresponding with outer baffle ring fixing groove, the fixing peace in inside of under shed baffle ring in the outside of casing nipple
Be contained in inner baffle ring fixing groove, the external stability of under shed baffle ring is arranged on outer baffle ring fixing groove, the top of under shed baffle ring with only
Move back axle sleeve bottom to be fitted together, above the 4th fixed cover, be fixed with outer annular outside the retaining axle sleeve and shear pin between
Boss, outer ring boss is fitted together with the top of the 4th fixed cover, and the lower outside of the 4th fixed cover has in wide at the top and narrow at the bottom
Inferior pyramidal land.
Above-mentioned position limit device may include the second fixed cover, male-female sleeve, upper shed baffle ring and the 3rd fixed cover, and second is fixing
The lower inside of set is fixedly installed togather with the upper outside of male-female sleeve, in the lower inside limited location annular groove of male-female sleeve, the
The top of three fixed covers is located in limited ring groove, and the lower inside of male-female sleeve is fixedly mounted on the upper outside of the 3rd fixed cover
Together, the external diameter of the second fixed cover bottom is identical with the external diameter on the top of male-female sleeve, has and number of spring leaf on the 3rd fixed cover
, there is, in the 3rd fixed cover bottom, the radial direction pin communicating with longitudinally mounted hole in mesh correspondence and the longitudinally mounted hole of up/down perforation
Hole, the top of each flat spring piece is fixedly mounted on longitudinally mounted in the hole by radial direction pin hole and upper fixing pin, first
Corresponding with spring leaf number and up/down perforation longitudinal register hole is had on fixed cover, has on the first fixed cover top and longitudinally determine
The position radial positioning hole that communicates of hole, the bottom of each flat spring piece is fixedly mounted on vertical by radial positioning hole and lower fixing pin
To positioning in the hole, have outer baffle ring mounting groove inside the second fixed cover above male-female sleeve, casing nipple upper outside have with
Corresponding inner baffle ring mounting groove inside and outside outer baffle ring mounting groove, the inside of upper shed baffle ring is fixedly mounted in inner baffle ring mounting groove,
The external stability of upper shed baffle ring is arranged in outer baffle ring mounting groove, and the bottom of upper shed baffle ring and the top of male-female sleeve hold out against
Together.
Above-mentioned upper shed baffle ring may include left semi-ring and right semi-ring, and left semi-ring and right semi-ring are fixedly installed togather；Or/
With the lower inside of the second fixed cover is threadably secured with the upper outside of male-female sleeve and is installed together, the bottom of male-female sleeve
Inner side and the upper outside of the 3rd fixed cover are threadably secured and are installed together, and the upper outside of the second fixed cover is presented narrow
Lower wide upper conical land, has the first limited impression inside the upper end of retaining axle sleeve, enters the sleeve pipe below fluid through-hole in radial direction
There is second limited impression corresponding with the first limited impression outside pipe nipple, in the first limited impression, be installed with limit opening
Snap ring, being internally located in the second limited impression of limit opening snap ring.
Can be threadably secured on liquid cylinder above above-mentioned annular boss and the first fixed cover is installed, under retaining axle sleeve
It is threadably secured with lower caging device upper inner outside portion and is installed together, have external screw thread on the top of casing nipple,
External screw thread is arranged at the bottom of casing nipple；Or/and, have outside the casing nipple of fixing back-up ring upper end on retainer ring spacing groove, solid
There is lower back-up ring stopper slot outside the casing nipple determining back-up ring lower end, be installed with external diameter in upper retainer ring spacing groove and be less than fixation
The upper check ring of back-up ring external diameter, is installed with the lower spring gear that external diameter is less than fixing back-up ring external diameter in lower back-up ring stopper slot
Circle；Or/and, inside annular boss with the middle part of casing nipple outside between be installed with no less than together with sealing ring,
Sealing ring together with being installed between inside liquid cylinder and being no less than for the upper outside of retaining axle sleeve, in the middle part of casing nipple
Sealing ring together with being installed between the upper inner of retaining axle sleeve and being no less than for the outside.
Present configuration is reasonable and compact, easy to use, and the setting of fixing back-up ring and spring leaf enables to and the present invention
Connect sleeve pipe be in center condition in well, improve the righting effect to sleeve pipe for the present invention, simultaneously so that formed cement
Ring thickness uniformly, improves cementing quality, reduces the risk that the later stage produces and operation oil gas is invaded；The present invention is easy to lower going-into-well
Interior, efficiently avoid the thorn to well and scrape, improve the practicality of the present invention, be prevented from solid particle and enter in the present invention
Portion is it is ensured that the present invention being capable of normal work.
Brief description
Accompanying drawing 1 is the main view half section structural representation of top half most preferred embodiment of the present invention.
Accompanying drawing 2 is the main view half section structural representation of the latter half of the present invention most preferred embodiment.
Accompanying drawing 3 is the mplifying structure schematic diagram at a in accompanying drawing 2.
Accompanying drawing 4 is the mplifying structure schematic diagram at b in accompanying drawing 2.
It is casing nipple that coding in accompanying drawing is respectively as follows: 1, and 2 is liquid cylinder, and 3 is retaining axle sleeve, and 4 is spring leaf, and 5 is to cut
Cut pin, 6 is annular boss, 7 is hydraulic cavities, 8 is radially to enter fluid through-hole, 9 is the first fixed cover, 10 is fixing back-up ring, and 11 are
Opening retaining ring, 12 is spacing frustum, and 13 is the 4th fixed cover, and 14 is under shed baffle ring, and 15 is outer ring boss, and 16 is lower cone
Shape ring platform, 17 is the second fixed cover, and 18 is male-female sleeve, and 19 is upper shed baffle ring, and 20 is the 3rd fixed cover, and 21 is upper steady pin
Nail, 22 is lower fixing pin, and 23 is upper conical land, and 24 is upper check ring, and 25 is lower spring back-up ring, and 26 is sealing ring, 27
For spacing slotted collar, 28 is fastener.
Specific embodiment
The present invention is not limited by following embodiments, can technology according to the present invention scheme determine specifically with practical situation
Embodiment.
In the present invention, for the ease of description, the description of the relative position relation of each part is all according to Figure of description 1
Butut mode being described, such as: the position relationship of forward and backward, upper and lower, left and right etc. is the cloth according to Figure of description 1
Figure direction is determining.
With reference to embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1 to 4, this hydraulic casing pipe centering device includes casing nipple 1, liquid cylinder 2, retaining axle sleeve 3 and spring
Piece 4, is fixed with lower caging device in the lower outside of casing nipple 1, and retaining axle sleeve 3 is sleeved on the lower outside of casing nipple 1,
The lower outside of retaining axle sleeve 3 is fixed together with lower caging device top, the bottom of the bottom of liquid cylinder 2 and retaining axle sleeve 3
Outside is fixedly installed togather by the shear pin 5 no less than, and liquid cylinder 2 inner side above retaining axle sleeve 3 is fixing
Have annular boss 6, be set in together outside the inner side of annular boss 6 and the middle part of casing nipple 1, annular boss 6 bottom with
Form hydraulic cavities 7 between casing nipple 1 outside between retaining axle sleeve 3 top and liquid cylinder 2 inner side, casing nipple 1 has
The radial direction that at least one is communicated with hydraulic cavities 7 enters fluid through-hole 8, is fixed with first fixing on the liquid cylinder 2 above annular boss 6
Set 9, is fixed with position limit device in casing nipple 1 upper outside, the sleeve pipe between position limit device and the first fixed cover 9 is short
It is fixed with fixing back-up ring 10 outside section 1, be distributed in outside casing nipple 1 no less than a piece of spring leaf 4, each flat spring
The upper and lower of piece 4 is fixed together with position limit device and the first fixed cover 9 respectively, in the top of each flat spring piece 4
Side compression, in the outside of fixing back-up ring 10, has female thread or external screw thread on the top of casing nipple 1, in the bottom of casing nipple 1
There are female thread or external screw thread.Spring leaf 4 has preferably swollen envelope effect, and the setting of fixing back-up ring 10 and spring leaf 4 enables to
The sleeve pipe being connected with the present invention is in center condition in well, improves the righting effect to sleeve pipe for the present invention, simultaneously so that shape
The cement thickness becoming uniformly, improves cementing quality, reduces the risk that the later stage produces and operation oil gas is invaded；The present invention is easy to
G.I.H, efficiently avoid the thorn to well and scrapes, improve the practicality of the present invention.
According to actual needs above-mentioned hydraulic casing pipe centering device can be made further optimization and/or improvements:
As shown in accompanying drawing 1 to 4, external diameter is had to be less than the first annular recessed of liquid cylinder 2 internal diameter outside the middle part of retaining axle sleeve 3
Groove, has the second annular groove communicating with first annular groove, the external diameter of the second annular groove in the lower outside of retaining axle sleeve 3
Less than the external diameter of first annular groove, it is installed with opening retaining ring 11, opening retaining ring in the bottom of first annular groove
11 lower inside is fixed with fastener 28, and fastener 28 is installed in the second annular groove, in the outside of opening retaining ring 11
Crown saw-tooth thread upward is distributed with from top to bottom, inside the liquid cylinder 2 above shear pin 5, has fit,
Being provided with fit can be with matching thread, saw-tooth thread and the cooperation of the saw-tooth thread cooperation in opening retaining ring 11 outside
Threading snaps are together.The setting of fastener 28 improves the connectivity robustness of opening retaining ring 11 and retaining axle sleeve 3；Work as sleeve pipe
After pressure in pipe nipple 1 is laid down, the setting of saw-tooth thread and matching thread prevents liquid cylinder 2 descending, realizes the list of liquid cylinder 2
To locking, thus preventing spring leaf 4 to reset, further increase the righting effect to sleeve pipe for the present invention.
As shown in accompanying drawing 1 to 4, there is the spacing cone in up-narrow and down-wide frustum inside the liquid cylinder 2 of fit upper end
Platform 12.The setting of spacing frustum 12 has spacing effect to opening retaining ring 11.
As shown in accompanying drawing 1 to 4, lower caging device includes the 4th fixed cover 13 and under shed baffle ring 14, the 4th fixed cover 13
Upper inner be fixedly installed togather with the lower outside of retaining axle sleeve 3, under the 4th fixed cover 13 below retaining axle sleeve 3
Have outer baffle ring fixing groove inside portion, have inner baffle ring fixing groove corresponding with outer baffle ring fixing groove in the outside of casing nipple 1, under open
The inside of mouth baffle ring 14 is fixedly mounted on inner baffle ring fixing groove, and the external stability of under shed baffle ring 14 is arranged on outer baffle ring and fixes
Groove, the top of under shed baffle ring 14 is fitted together with retaining axle sleeve 3 bottom, with shear pin 5 above the 4th fixed cover 13
Between retaining axle sleeve 3 outside be fixed with outer ring boss 15, the top of outer ring boss 15 and the 4th fixed cover 13 holds out against
Together, the lower outside of the 4th fixed cover 13 has in inferior pyramidal land 16 wide at the top and narrow at the bottom.Under shed baffle ring 14 can be two lobes
Formula split ring.The setting of under shed baffle ring 14 has position-limiting action to the 4th fixed cover 13, prevents from moving down on the 4th fixed cover 13
Dynamic, further increase the righting effect to sleeve pipe for the present invention.Inferior pyramidal land 16 is prevented from solid particle and enters the present invention
Inside is it is ensured that the present invention being capable of normal work.
As shown in accompanying drawing 1 to 4, position limit device includes the second fixed cover 17, male-female sleeve 18, upper shed baffle ring 19 and the 3rd
Fixed cover 20, the lower inside of the second fixed cover 17 and the upper outside of male-female sleeve 18 are fixedly installed togather, in male-female sleeve 18
Lower inside limited location annular groove, the top of the 3rd fixed cover 20 is located in limited ring groove, the lower inside of male-female sleeve 18 and the
The upper outside of three fixed covers 20 is fixedly installed togather, and the external diameter of the second fixed cover 17 bottom is outer with the top of male-female sleeve 18
Footpath is identical, has corresponding with spring leaf 4 number and up/down perforation longitudinally mounted hole on the 3rd fixed cover 20, fixing the 3rd
Covering 20 bottoms has a radial direction pin hole communicating with longitudinally mounted hole, and radial direction pin hole and upper is passed through on the top of each flat spring piece 4
Fixing pin 21 is fixedly mounted on longitudinally mounted in the hole, has corresponding with spring leaf 4 number and pass through up and down on the first fixed cover 9
, there are the radial positioning hole communicating with longitudinal register hole, each flat spring piece 4 in logical longitudinal register hole on the first fixed cover 9 top
Bottom pass through radial positioning hole and lower fixing pin 22 and be fixedly mounted on longitudinal register in the hole, second above male-female sleeve 18
There is outer baffle ring mounting groove inside fixed cover 17, have interior gear corresponding with inside and outside outer baffle ring mounting groove in casing nipple 1 upper outside
Ring mounting groove, the inside of upper shed baffle ring 19 is fixedly mounted in inner baffle ring mounting groove, the external stability peace of upper shed baffle ring 19
It is contained in outer baffle ring mounting groove, the bottom of upper shed baffle ring 19 is fitted together with the top of male-female sleeve 18.Position limit device pair
Spring leaf 4 has position-limiting action.
As shown in accompanying drawing 1 to 4, upper shed baffle ring 19 includes left semi-ring and right semi-ring, left semi-ring and the fixed installation of right semi-ring
Together；Or/and, the lower inside of the second fixed cover 17 and the upper outside of male-female sleeve 18 are threadably secured and are arranged on one
Rise, the upper outside of the lower inside of male-female sleeve 18 and the 3rd fixed cover 20 is threadably secured and is installed together, the second fixation
The upper outside of set 17 has in up-narrow and down-wide upper conical land 23, has the first limited impression inside the upper end of retaining axle sleeve 3,
There is second limited impression corresponding with the first limited impression outside the casing nipple 1 radially entering below fluid through-hole 8, in the first limit
It is installed with limit opening snap ring 27, being internally located in the second limited impression of limit opening snap ring 27 in the groove of position.Epicone
Shape ring platform 23 is prevented from solid particle and enters present invention inside it is ensured that the present invention being capable of normal work.Limit opening snap ring
27 pairs of retaining axle sleeves 3 play position-limiting action.
As shown in accompanying drawing 1 to 4, the liquid cylinder 2 above annular boss 6 is threadably secured the first fixed cover is installed
9, the lower outside of retaining axle sleeve 3 is threadably secured with lower caging device upper inner and is installed together, in casing nipple 1
External screw thread is arranged at top, has external screw thread in the bottom of casing nipple 1；Or/and, outside the casing nipple 1 of fixing back-up ring 10 upper end
There is upper retainer ring spacing groove, have lower back-up ring stopper slot outside the casing nipple 1 of fixing back-up ring 10 lower end, in upper retainer ring spacing groove
It is installed with the upper check ring 24 that external diameter is less than fixing back-up ring 10 external diameter, in lower back-up ring stopper slot, be installed with external diameter
Lower spring back-up ring 25 less than fixing back-up ring 10 external diameter；Or/and, between annular boss 6 inner side and casing nipple 1 middle part outside
It is installed with no less than sealing ring 26 together, fixedly mount between the upper outside of retaining axle sleeve 3 and liquid cylinder 2 inner side
Have no less than sealing ring 26 together, be installed between casing nipple 1 middle part outside and the upper inner of retaining axle sleeve 3
No less than sealing ring 26 together.The setting of upper check ring 24 and lower spring back-up ring 25 can play fixation to fixing back-up ring 10
Spacing effect.The setting of sealing ring 26 can improve sealing property when building the pressure inside the present invention.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal enforcement effect
Really, non-essential technical characteristic can be increased and decreased according to actual needs, to meet the demand of different situations.
The use process of preferred embodiment: first, casing nipple 1 is fixedly mounted on one with corresponding sleeve pipe
Rise, then, by the present invention with sleeve pipe G.I.H, when the present invention and sleeve pipe are lowered into horizontal well design position, replace
Bruising after cement mortar, casing nipple 1 lower inside is blocked so that being in the shape that builds the pressure inside the present invention with sleeve pipe below
State, then, fluid passes through radially to enter fluid through-hole 8 entrance hydraulic cavities 7, and fluid forms larger in hydraulic cavities 7 to annular boss 6
Push up power, when annular boss 6 is subject to sufficiently large motive force upwards, shear pin 5 is cut off, and then, fluid cylinder
Cylinder 2 moves up, and promotes the first fixed cover 9 up, and spring leaf 4 bottom occurs under the up effect of the first fixed cover 9
Upstroke is so that there is expanded radially in spring leaf 4 at fixing back-up ring 10, when the inner side of the first fixed cover 9 push the spring piece 4
When face and lower spring back-up ring 25 lower surface hold out against, spring leaf 4 is swollen sealed knot bundle, spring leaf 4 and the borehole wall of swollen envelope are fitted together, and make
Obtain the present invention and centralizing function is played to sleeve pipe.
Claims (11)
1. a kind of hydraulic casing pipe centering device, it is characterised in that including casing nipple, liquid cylinder, retaining axle sleeve and spring leaf, is covering
The lower outside of pipe pipe nipple is fixed with lower caging device, and retaining axle sleeve is sleeved on the lower outside of casing nipple, retaining axle sleeve
Lower outside is fixed together with lower caging device top, and the lower outside of the bottom of liquid cylinder and retaining axle sleeve passes through to be no less than
The shear pin of one is fixedly installed togather, and is fixed with annular boss, convex annular inside the liquid cylinder of retaining above axle sleeve
It is set in together outside the inner side of platform and the middle part of casing nipple, the sleeve pipe between annular boss bottom and retaining axle sleeve top
Form hydraulic cavities between outside pipe nipple and inside liquid cylinder, casing nipple has at least one radial direction communicating with hydraulic cavities enter
Fluid through-hole, is fixed with the first fixed cover on the liquid cylinder above annular boss, is fixed with the upper limit in casing nipple upper outside
Position device, is fixed with fixing back-up ring, no less than a piece of outside the casing nipple between position limit device and the first fixed cover
Spring leaf is distributed in outside casing nipple, and the upper and lower of each flat spring piece is solid with position limit device and first respectively
Determine set to be fixed together, the upper inner of each flat spring piece is pressed on the outside of fixing back-up ring, has on the top of casing nipple
Female thread or external screw thread, have female thread or external screw thread in the bottom of casing nipple.
2. hydraulic casing pipe centering device according to claim 1 is it is characterised in that have external diameter little outside the middle part of retaining axle sleeve
In the first annular groove of liquid cylinder internal diameter, have, in the lower outside of retaining axle sleeve, the second annular communicating with first annular groove
Groove, the external diameter of the second annular groove is less than the external diameter of first annular groove, is installed with the bottom of first annular groove
Opening retaining ring, the lower inside of opening retaining ring is fixed with fastener, and fastener is installed in the second annular groove, in opening
The outside of retaining ring is distributed with crown saw-tooth thread upward from top to bottom, has and join inside the liquid cylinder above shear pin
Close groove, be provided with fit can with opening retaining ring outside saw-tooth thread cooperation matching thread, zigzag spiral shell
Stricture of vagina is fastened togather with matching thread.
3. hydraulic casing pipe centering device according to claim 2 is it is characterised in that have inside the liquid cylinder of fit upper end
Spacing frustum in up-narrow and down-wide frustum.
4. the hydraulic casing pipe centering device according to claim 1 or 2 or 3 is it is characterised in that lower caging device includes the 4th admittedly
Fixed set and under shed baffle ring, the upper inner of the 4th fixed cover and the lower outside of retaining axle sleeve are fixedly installed togather, only
Moving back the 4th fixed cover lower inside below axle sleeve has outer baffle ring fixing groove, has and outer baffle ring fixing groove in the outside of casing nipple
Corresponding inner baffle ring fixing groove, the inside of under shed baffle ring is fixedly mounted on inner baffle ring fixing groove, and the outside of under shed baffle ring is solid
Dingan County is contained in outer baffle ring fixing groove, and the top of under shed baffle ring is fitted together with retaining axle sleeve bottom, on the 4th fixed cover
It is fixed with outer ring boss, the top top of outer ring boss and the 4th fixed cover outside retaining axle sleeve between side and shear pin
Tightly together, the lower outside of the 4th fixed cover has in inferior pyramidal land wide at the top and narrow at the bottom.
5. the hydraulic casing pipe centering device according to claim 1 or 2 or 3 is it is characterised in that position limit device includes second admittedly
Fixed set, male-female sleeve, upper shed baffle ring and the 3rd fixed cover, the lower inside of the second fixed cover is fixed with the upper outside of male-female sleeve
It is installed together, in the lower inside limited location annular groove of male-female sleeve, the top of the 3rd fixed cover is located in limited ring groove, male-female sleeve
Lower inside be fixedly installed togather with the upper outside of the 3rd fixed cover, the external diameter of the second fixed cover bottom and male-female sleeve
The external diameter on top is identical, has corresponding with spring leaf number and up/down perforation longitudinally mounted hole on the 3rd fixed cover,
The radial direction pin hole being communicated with longitudinally mounted hole arranged at three fixed cover bottoms, the top of each flat spring piece pass through radial direction pin hole and
Upper fixing pin is fixedly mounted on longitudinally mounted in the hole, has and up/down perforation corresponding with spring leaf number on the first fixed cover
Longitudinal register hole, have, on the first fixed cover top, the radial positioning hole communicating with longitudinal register hole, under each flat spring piece
Portion is fixedly mounted on longitudinal register in the hole by radial positioning hole and lower fixing pin, in the second fixed cover above male-female sleeve
There is outer baffle ring mounting groove side, has inner baffle ring mounting groove corresponding with inside and outside outer baffle ring mounting groove in casing nipple upper outside, on
The inside of opening baffle ring is fixedly mounted in inner baffle ring mounting groove, and the external stability of upper shed baffle ring is arranged on outer baffle ring mounting groove
Interior, the bottom of upper shed baffle ring is fitted together with the top of male-female sleeve.
6. hydraulic casing pipe centering device according to claim 4 is it is characterised in that position limit device includes the second fixed cover, public affairs
Mother set, upper shed baffle ring and the 3rd fixed cover, the lower inside of the second fixed cover is fixedly mounted on the upper outside of male-female sleeve
Together, in the lower inside limited location annular groove of male-female sleeve, the top of the 3rd fixed cover is located in limited ring groove, the bottom of male-female sleeve
Inner side and the upper outside of the 3rd fixed cover are fixedly installed togather, the external diameter of the second fixed cover bottom and the top of male-female sleeve
External diameter is identical, has corresponding with spring leaf number and up/down perforation longitudinally mounted hole on the 3rd fixed cover, fixing the 3rd
The radial direction pin hole being communicated with longitudinally mounted hole is arranged at set bottom, and radial direction pin hole and upper fixation are passed through in the top of each flat spring piece
Pin is fixedly mounted on longitudinally mounted in the hole, has corresponding with spring leaf number and up/down perforation longitudinal direction on the first fixed cover
Location hole, has, on the first fixed cover top, the radial positioning hole communicating with longitudinal register hole, and the bottom of each flat spring piece is passed through
Radial positioning hole and lower fixing pin are fixedly mounted on longitudinal register in the hole, have outer inside the second fixed cover above male-female sleeve
Baffle ring mounting groove, has inner baffle ring mounting groove corresponding with inside and outside outer baffle ring mounting groove in casing nipple upper outside, and upper shed keeps off
The inside of ring is fixedly mounted in inner baffle ring mounting groove, and the external stability of upper shed baffle ring is arranged in outer baffle ring mounting groove, on
The bottom of opening baffle ring is fitted together with the top of male-female sleeve.
7. hydraulic casing pipe centering device according to claim 5 is it is characterised in that upper shed baffle ring includes left semi-ring and right half
Ring, left semi-ring and right semi-ring are fixedly installed togather；Or/and, the lower inside of the second fixed cover and the upper outside of male-female sleeve
It is threadably secured and is installed together, the lower inside of male-female sleeve is threadably secured installation with the upper outside of the 3rd fixed cover
Together, the upper outside of the second fixed cover has in up-narrow and down-wide upper conical land, has inside the upper end of retaining axle sleeve
One limited impression, has corresponding with the first limited impression second spacing recessed outside the casing nipple that radial direction is entered below fluid through-hole
Groove, is installed with limit opening snap ring in the first limited impression, limit opening snap ring be internally located at the second limited impression
Interior.
8. hydraulic casing pipe centering device according to claim 6 is it is characterised in that upper shed baffle ring includes left semi-ring and right half
Ring, left semi-ring and right semi-ring are fixedly installed togather；Or/and, the lower inside of the second fixed cover and the upper outside of male-female sleeve
It is threadably secured and is installed together, the lower inside of male-female sleeve is threadably secured installation with the upper outside of the 3rd fixed cover
Together, the upper outside of the second fixed cover has in up-narrow and down-wide upper conical land, has inside the upper end of retaining axle sleeve
One limited impression, has corresponding with the first limited impression second spacing recessed outside the casing nipple that radial direction is entered below fluid through-hole
Groove, is installed with limit opening snap ring in the first limited impression, limit opening snap ring be internally located at the second limited impression
Interior.
9. the hydraulic casing pipe centering device according to claim 1 or 2 or 3 or 6 or 7 or 8 is it is characterised in that above annular boss
Liquid cylinder on be threadably secured the first fixed cover be installed, the lower outside of retaining axle sleeve and lower caging device upper inner
It is threadably secured and is installed together, have external screw thread on the top of casing nipple, have external screw thread in the bottom of casing nipple；Or/
With, have outside the casing nipple of fixing back-up ring upper end on retainer ring spacing groove, have outside the casing nipple of fixing back-up ring lower end
Lower back-up ring stopper slot, is installed with the upper check ring that external diameter is less than fixing back-up ring external diameter in upper retainer ring spacing groove, under
It is installed with the lower spring back-up ring that external diameter is less than fixing back-up ring external diameter in retainer ring spacing groove；Or/and, inside annular boss with
It is installed between outside no less than sealing ring together in the middle part of casing nipple, in upper outside and the liquid cylinder of retaining axle sleeve
Be installed between inner side no less than sealing ring together, in the middle part of casing nipple the upper inner of outside and retaining axle sleeve it
Between be installed with no less than sealing ring together.
10. hydraulic casing pipe centering device according to claim 4 is it is characterised in that pass through on liquid cylinder above annular boss
It is screwed and the first fixed cover is installed, the lower outside of retaining axle sleeve and lower caging device upper inner are threadably secured peace
It is fitted together, has external screw thread on the top of casing nipple, have external screw thread in the bottom of casing nipple；Or/and, on fixing back-up ring
There is upper retainer ring spacing groove outside the casing nipple at end, outside the casing nipple of fixing back-up ring lower end, have lower back-up ring stopper slot,
It is installed with the upper check ring that external diameter is less than fixing back-up ring external diameter in upper retainer ring spacing groove, fixing in lower back-up ring stopper slot
The lower spring back-up ring that external diameter is less than fixing back-up ring external diameter is installed；Or/and, inside annular boss with casing nipple in the middle part of outside
Between be installed with no less than sealing ring together, inside the upper outside of retaining axle sleeve and liquid cylinder between fixedly mount
Have no less than sealing ring together, be installed with many in the middle part of casing nipple between outside and the upper inner of retaining axle sleeve
In sealing ring together.
11. hydraulic casing pipe centering devices according to claim 5 are it is characterised in that pass through on liquid cylinder above annular boss
It is screwed and the first fixed cover is installed, the lower outside of retaining axle sleeve and lower caging device upper inner are threadably secured peace
It is fitted together, has external screw thread on the top of casing nipple, have external screw thread in the bottom of casing nipple；Or/and, on fixing back-up ring
There is upper retainer ring spacing groove outside the casing nipple at end, outside the casing nipple of fixing back-up ring lower end, have lower back-up ring stopper slot,
It is installed with the upper check ring that external diameter is less than fixing back-up ring external diameter in upper retainer ring spacing groove, fixing in lower back-up ring stopper slot
The lower spring back-up ring that external diameter is less than fixing back-up ring external diameter is installed；Or/and, inside annular boss with casing nipple in the middle part of outside
Between be installed with no less than sealing ring together, inside the upper outside of retaining axle sleeve and liquid cylinder between fixedly mount
Have no less than sealing ring together, be installed with many in the middle part of casing nipple between outside and the upper inner of retaining axle sleeve
In sealing ring together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410591067.7A CN104373058B (en) | 2014-10-29 | 2014-10-29 | Hydraulic casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410591067.7A CN104373058B (en) | 2014-10-29 | 2014-10-29 | Hydraulic casing centralizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373058A CN104373058A (en) | 2015-02-25 |
| CN104373058B true CN104373058B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410591067.7A Active CN104373058B (en) | 2014-10-29 | 2014-10-29 | Hydraulic casing centralizer |
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| CN (1) | CN104373058B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578480B (en) * | 2019-09-24 | 2022-03-04 | 中国石油集团西部钻探工程有限公司 | Reliable hydraulic centralizer |
| CN115341868A (en) * | 2022-08-23 | 2022-11-15 | 中国石油天然气集团有限公司 | Device for reducing friction resistance in slim hole coiled tubing drilling and using method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2605378Y (en) * | 2003-03-14 | 2004-03-03 | 周警卫 | Hydraulic rigid centralising device for well drilling and well cementation |
| RU2275489C2 (en) * | 2004-03-04 | 2006-04-27 | Рамиль Владимирович Степанов | Hydromechanical centralizer |
| CN201202418Y (en) * | 2008-06-17 | 2009-03-04 | 中国石油化工股份有限公司江苏油田分公司石油工程技术研究院 | Self-locking type hydraulic casing tube centralizer |
| CN102536133B (en) * | 2012-02-09 | 2014-02-19 | 东营市健源工贸有限责任公司 | Hydraulic casing pipe centering device |
| CN202531051U (en) * | 2012-03-01 | 2012-11-14 | 中国石油天然气股份有限公司 | Hydraulic casing centralizer |
| CN103670297B (en) * | 2012-09-24 | 2015-10-14 | 中国石油天然气集团公司 | Hydraulic casing pipe centering device |
| CN204225795U (en) * | 2014-10-29 | 2015-03-25 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing pipe centering device |
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Address after: 830026 the Xinjiang Uygur Autonomous Region economic and Technological Development Zone, Central South Road, No. 326, West Drilling Drilling Engineering Technology Research Institute of science and Technology Management Department of science and technology Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 West Drilling Engineering Institute, No. 98 Youyi Road, the Xinjiang Uygur Autonomous Region, Karamay Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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Effective date of registration: 20201104 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |