CN105484708A - Rotary sliding sleeve type bottom filling device for gravel filling - Google Patents
Rotary sliding sleeve type bottom filling device for gravel filling Download PDFInfo
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- CN105484708A CN105484708A CN201511020888.6A CN201511020888A CN105484708A CN 105484708 A CN105484708 A CN 105484708A CN 201511020888 A CN201511020888 A CN 201511020888A CN 105484708 A CN105484708 A CN 105484708A
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- 238000012856 packing Methods 0.000 claims description 33
- 210000003746 feather Anatomy 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 230000004323 axial length Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 15
- 239000004576 sand Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241001149930 Protura <class> Species 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Revetment (AREA)
Abstract
The invention provides a rotary sliding sleeve type bottom filling device for gravel filling, which comprises a filling tool and a filling service tool, wherein the filling tool comprises a filling cylinder and a rotary sliding sleeve which can be rotatably sleeved on the inner side of the filling cylinder; the filling service tool can penetrate through the filling tool in an axial reciprocating mode and can drive the rotary sliding sleeve to rotate relative to the filling barrel through the axial reciprocating mode, a filling cavity is formed in the filling service tool, and a third filling hole penetrates through the side wall of the filling service tool. The invention has the strong-opening and strong-closing type switch mechanism, can realize the infinite repeated opening and closing of the switch mechanism without a spring, and solves the problem that the switch mechanism can not be normally closed due to the fatigue failure of the spring or insufficient reset force in the prior art.
Description
Technical field
The present invention relates to the sand control technique in petroleum works, the rotation sleeve type bottom filling device for gravel pack of particularly a kind of gravel pack.
Background technology
Gravel filling sand prevention technology is one of effective technology of sand control and improvement of shaking out, extensive use in petroleum industry at home and abroad.Wherein, gravel-pack assembly/instrument mainly comprises top packing tool and bottom filling tool two class.At present, bottom gravel pack tools is applied to horizontal well filling more, and its switching mechanism adopts slider mechanism in axial sliding.This mechanism needs to utilize spring to reset mostly, there is various problems in actual applications: one is the problem that spring fatigue failures causes sliding sleeve and cannot normally close; Two is there is the problem that spring restoring force causes sliding sleeve normally to close not, and this problem mostly occurs in small size packing tool; Three are, the main aperture internal diameter of this mechanism is greater than sliding sleeve internal diameter, can form step, and this step easily causes the problem of card junk.
Summary of the invention
The object of this invention is to provide a kind of rotation sleeve type bottom filling device for gravel pack, it does not need spring just can realize the unlimited switch repeatedly of switching mechanism, the switching mechanism opening by force strong pass formula, the problem cannot normally closed not because of spring fatigue failures or reset force solving that prior art exists.
For achieving the above object, the present invention proposes a kind of rotation sleeve type bottom filling device for gravel pack, it comprises: packing tool, cylindrically, the rotation sliding sleeve comprising filling cylinder and can be set in rotationally inside filling cylinder, the sidewall of filling cylinder runs through the first pack hole, rotates the sidewall of sliding sleeve and runs through and have the second pack hole, rotates sliding sleeve and the second pack hole is overlapped with the first pack hole by rotating or misplaces; Filling service aid, cylindrically, it can reciprocatingly be arranged in packing tool vertically, and by axial reciprocating move drive rotate sliding sleeve rotate relative to filling cylinder, filling service aid inside there is open at one end and the other end close filling chamber, and the sidewall of filling service aid running through the 3rd pack hole having and be communicated with filling chamber, filling service aid makes the 3rd pack hole overlap with the second pack hole by moving axially or misplaces.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the inside wall of rotation sliding sleeve is convexly equipped with feather key, the lateral wall of filling service aid is arranged with gathering sill, gathering sill comprises and spirally turns to groove, filling service aid and filling cylinder circumference fixing and along the moving axially of filling cylinder time, feather key is by along turning to groove slip driven rotary sliding sleeve to rotate relative to filling cylinder.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, packing tool also comprises sleeve, and sleeve connection, in one end of filling cylinder, the inside wall of sleeve is convexly equipped with positioning key; Gathering sill also comprises and turns to groove to connect and first locating slot parallel with the central axis of filling service aid, and positioning key is by fixing filling service aid and filling cylinder circumference along the first locating slot slip; Wherein, when filling service aid and filling cylinder circumference fixing, and during along the position moved axially to the 3rd pack hole overlaps with the first pack hole of filling cylinder, the second pack hole is all communicated with the 3rd pack hole with the first pack hole; When filling service aid is along the position moved axially to the 3rd pack hole and the first pack hole axile displacement of filling cylinder, the second pack hole and the first pack hole circumferential misalignment.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, filling service aid also comprises filling pipe and guide peg, filling pipe inside forms filling chamber, 3rd pack hole is opened on the sidewall of filling pipe, guide peg is connected with one end of filling pipe, and gathering sill is recessed on the lateral wall of guide peg.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, feather key is between the second pack hole and positioning key; Turn to slot between the 3rd pack hole and the first locating slot.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, gathering sill also comprises spiral guide channel, first locating slot is connected to and turns between groove and guide channel, and the circumferential groove width of guide channel increases to the one end away from the first locating slot gradually near one end of the first locating slot.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, gathering sill also comprises second locating slot parallel with the first locating slot, turns to groove to be connected between the first locating slot and the second locating slot.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the one end rotating sliding sleeve is connected with swivel becket, and part swivel becket protruding from the inside wall rotating sliding sleeve forms feather key.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, be socketed with locating ring inside one end of sleeve, part locating ring protruding from the inside wall of sleeve forms positioning key.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the flow guiding head of column is arranged with inside one end of filling pipe, the other end of filling chamber is closed by flow guiding head, the end be positioned at inside the 3rd pack hole of flow guiding head is hemispheric projection, and protruding being guided to by load fluid radially penetrates the 3rd pack hole.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the axial length of the first locating slot is L1, and the axial spacing between feather key and positioning key is L2, the axial length of groove is turned to be L3, wherein L1 > L2 > L3.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the lateral wall of the other end of filling pipe has conical outer wall face, the end of the other end of filling cylinder have for conical outer wall face against conical inboard wall face, the axial spacing between conical inboard wall face and the first pack hole equals the axial spacing between conical outer wall face and the 3rd pack hole.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the sidewall of filling cylinder is equipped with spacer pin, the lateral wall of rotation sliding sleeve is arranged with the circumferential stopper slot of arc, spacer pin stretches in circumferential stopper slot, and can the circumferentially stopper slot slip when rotating sliding sleeve and rotating.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, the circumferential angle of stopper slot equals the circumferential angle of rotation slot.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, packing tool also comprises the anti-impact cover be socketed in outside filling cylinder, and have cannelure between anti-impact cover and filling cylinder, cannelure is communicated with the first pack hole.
As above for the rotation sleeve type bottom filling device of gravel pack, wherein, packing tool also comprises top connection, and top connection is connected to the other end of filling cylinder, and is communicated with filling cylinder.
Feature and the advantage of the rotation sleeve type bottom filling device for gravel pack of the present invention are:
1, the rotation sleeve type bottom filling device for gravel pack of the present invention, the opening and closing of device for filling are realized by the movement of filling service aid, filling service aid and rotation sliding sleeve form the switching mechanism opening by force strong pass formula, do not need spring just can realize the unlimited switch repeatedly of switching mechanism, do not deposit the problem cannot closed after opening, the problem cannot normally closed not because of spring fatigue failures or reset force solving that prior art exists; Meanwhile, because device for filling of the present invention is arranged on bottom sand control pipe, do not affect latus rectum in sand control pipe, solve the card junk problem that existing slider mechanism exists;
2, the rotation sleeve type bottom filling device for gravel pack of the present invention, not by size restrictions, the needs of large-scale packing tool can be met, also can meet the needs of microminiature packing tool, applicability is strong, can be used for straight well gravel pack and SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL;
3, the rotation sleeve type bottom filling device for gravel pack of the present invention, structure is simple, and stability is high, improves gravel pack service success rate, reduces filling difficulty of construction and risk.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the schematic diagram of packing tool in the present invention;
Fig. 2 is the sectional view along A-A line in Fig. 1;
Fig. 3 is the schematic diagram of filling service aid in the present invention;
Fig. 4 is the schematic diagram that the rotation sleeve type bottom filling device for gravel pack of the present invention is in open mode;
Fig. 5 is the sectional view along B-B line in Fig. 4;
Fig. 6 is in Fig. 4 under open mode, and feather key and positioning key are in the position view of gathering sill;
Fig. 7 is the schematic diagram that the rotation sleeve type bottom filling device for gravel pack of the present invention is in closed condition;
Fig. 8 is the sectional view along C-C line in Fig. 7;
Fig. 9 is in Fig. 7 under closed condition, and feather key and positioning key are in the position view of gathering sill;
Figure 10 is the expansion schematic diagram rotating sliding sleeve in the present invention.
Critical element label declaration:
1 packing tool
11 filling cylinder 111 first pack hole 112 spacer pins
12 rotate sliding sleeve
121 second pack hole 122 circumferential stopper slot 123 draw-in groove
13 sleeve 14 swivel becket 141 feather keys
15 locating ring 151 positioning keys
16 anti-impacts overlap 161 cannelure 17 top connections
2 filling service aids
21 filling pipe 211 filling chamber 212 the 3rd pack holes
22 guide peg 221 gathering sill 2,211 second locating slots
2212 turn to groove 2,213 first locating slot 2214 guide channel
222 coneheads
23 flow guiding head 231 are protruding
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
As shown in Figure 1, Figure 3, the invention provides a kind of rotation sleeve type bottom filling device for gravel pack, can be arranged on bottom sand control pipe, for filling anti-sand gravel, this rotation sleeve type bottom filling device being used for gravel pack comprises cylindric packing tool 1 and cylindric filling service aid 2;
The rotation sliding sleeve 12 that packing tool 1 comprises filling cylinder 11 and can be set in rotationally inside filling cylinder 11, rotate sliding sleeve 12 and filling cylinder 11 axial restraint, the sidewall of filling cylinder 11 runs through the first pack hole 111, the sidewall rotating sliding sleeve 12 runs through the second pack hole 121, rotate sliding sleeve 12 by rotating, make the second pack hole 121 overlap with the first pack hole 111 at circumferencial direction or misplace, the center line of the first pack hole 111 and the center line of the second pack hole 121 are positioned on same sagittal plane in other words;
Filling service aid 2 can reciprocatingly be arranged in packing tool 1 vertically, and by axial reciprocating move drive rotate sliding sleeve 12 rotate relative to filling cylinder 11, filling service aid 2 inside there is open at one end and the other end close filling chamber 211, and the sidewall of filling service aid 2 runs through the 3rd pack hole 212 having and be communicated with filling chamber 211, filling service aid 2 is by moving axially, the 3rd pack hole 212 is made axially to overlap with the second pack hole 121 and the first pack hole 111 or misplace, the center line of the 3rd pack hole 212 and the center line of the first pack hole 111 to be positioned on same axial vane surface (axially just to) in other words, when the first pack hole 111, when second pack hole 121 and the 3rd pack hole 212 all overlap, device for filling is opened, when the first pack hole 111 and the second pack hole 121 misplace, device for filling is closed.
Rotation sleeve type bottom filling device for gravel pack of the present invention, the opening and closing of device for filling are realized by the movement of filling service aid, filling service aid and rotation sliding sleeve form the switching mechanism opening by force strong pass formula, do not need spring just can realize the unlimited switch repeatedly of switching mechanism, the problem cannot normally closed not because of spring fatigue failures or reset force solving that prior art exists; Meanwhile, because device for filling of the present invention is arranged on bottom sand control pipe, do not affect latus rectum in sand control pipe, solve the card junk problem that existing slider mechanism exists.
As shown in Fig. 4, Fig. 5, Fig. 7, Fig. 8, in the present embodiment, when filling service aid 2 moves axially the position to the 3rd pack hole 212 overlaps with the first pack hole 111, second pack hole 121 and the first pack hole 111 are all communicated with the 3rd pack hole 212 or overlap, now device for filling of the present invention is in open mode, load fluid enters the filling position between device for filling and the borehole wall after flowing through the 3rd pack hole 212, second pack hole 121 and the first pack hole 111 from filling chamber 211; When filling service aid 2 moves to the position of the 3rd pack hole 212 and the first pack hole 111 axile displacement, the second pack hole 121 and the first pack hole 111 circumferential misalignment, now device for filling of the present invention is in closed condition.
As shown in Figure 1 and Figure 2, in another embodiment, the inside wall of rotation sliding sleeve 12 is convexly equipped with feather key 141, the lateral wall of filling service aid 2 is arranged with gathering sill 221, gathering sill 221 comprises and spirally turns to groove 2212, filling service aid 2 and filling cylinder 11 circumference fixing and along the moving axially of filling cylinder 11 time, feather key 141 is by along turning to the groove 2212 driven rotary sliding sleeve 12 that slides to rotate relative to filling cylinder 11.In the present embodiment by feather key 141 with turn to the cooperation of groove 2212 realize rotate sliding sleeve 12 rotate relative to filling cylinder 11.
In a preferred technical scheme, packing tool 1 also comprises sleeve 13, and sleeve 13 is connected to one end of filling cylinder 11, and sleeve 13 is such as threaded with filling cylinder 11, the inside wall of sleeve 13 is convexly equipped with positioning key 151; Gathering sill 221 also comprises and turns to groove 2212 to connect and first locating slot 2213 parallel with the central axis of filling service aid 2, first locating slot is the straight trough arranged vertically in other words, and positioning key 151 is fixing with filling cylinder 11 circumference by filling service aid 2 by sliding along the first locating slot 2213.Filling service aid is realized by the cooperation of positioning key and the first locating slot and filling cylinder circumference is fixing, to reach the effect only making rotation sliding sleeve rotate in the present embodiment;
Thus, when filling service aid 2 is fixing with filling cylinder 11 circumference, and during along the position moved axially to the 3rd pack hole 212 overlaps with the first pack hole 111 of filling cylinder 11, the second pack hole 121 is all communicated with the 3rd pack hole 212 with the first pack hole 111; When filling service aid 2 is along the position moved axially to the 3rd pack hole 212 and the first pack hole 111 axile displacement of filling cylinder 11, the second pack hole 121 and the first pack hole 111 circumferential misalignment.
As shown in Figure 3, filling service aid 2 also comprises filling pipe 21 and guide peg 22, and the inside of filling pipe 21 forms filling chamber the 211, three pack hole 212 and is opened on the sidewall of filling pipe 21; Guide peg 22 is such as the cylindrical shell of hollow, and with weight reduction, convenient operation, guide peg 22 is connected with one end of filling pipe 21, and guide peg 22 and filling pipe 21 are such as threaded connection, and gathering sill 221 is recessed on the lateral wall of guide peg 22.
Again as shown in Figure 3, wherein, the bearing of trend of gathering sill 221 is roughly length direction or the axis of guide peg 22, the quantity of gathering sill 221, the quantity of positioning key 151 is all equal with the quantity of feather key 141, gathering sill 221 is such as more than two, to make the movement of filling service aid, and the rotation rotating sliding sleeve is more steady, these gathering sills 221 arrange along the circumferencial direction interval of guide peg 22 and are uniformly distributed, turn to groove 2212 to extend to form helical form along the circumferential and axial of guide peg 22 simultaneously, each groove 2212 that turns to such as is less than the semicircle girth of guide peg 22 at the development length of guide peg 22 circumference.
Again as shown in Figure 1, as an optimal technical scheme of the present embodiment, feather key 141 is between the second pack hole 121 and positioning key 151, the one end (or top) such as rotating sliding sleeve 12 is stretched in filling cylinder 11, the other end (or bottom) rotating sliding sleeve 12 stretches in sleeve 13, second pack hole 121 is located at the one end rotating sliding sleeve 12, feather key 141 is located at and is rotated the other end of sliding sleeve 12, positioning key 151 be located at sleeve 13 away from filling cylinder 11 and the one end rotating sliding sleeve 12; Turn to groove 2212 between the 3rd pack hole 212 and the first locating slot 2213.
Preferably, gathering sill 221 also comprises spiral guide channel 2214, first locating slot 2213 is connected to and turns between groove 2212 and guide channel 221, the circumferential groove width of guide channel 221 increases to the one end away from the first locating slot 2213 gradually near one end of the first locating slot 2213, guide channel 2214 such as extends to the end of guide peg 22, guide channel 2214 is as the entrance of gathering sill 221, for inserting in the process of packing tool 1 at filling service aid 2, feather key 141 is introduced in gathering sill 221 smoothly.
As shown in Fig. 3, Fig. 9, preferably, gathering sill 221 also comprises second locating slot 2211 parallel with the first locating slot 2213, groove 2212 is turned to be connected between the first locating slot 2213 and the second locating slot 2211, that is, gathering sill 221 comprises and connects successively and the first locating slot 2213 be communicated with, turn to groove 2212, second locating slot 2211 and guide channel 2214.By arranging the second locating slot 2211, can the second pack hole 121 turn to overlap with the first pack hole 111 time, continue to move axially filling service aid 2, to adjust the axial location of the 3rd pack hole 212 further, until the 3rd pack hole 212 all overlaps with the second pack hole 121 and the first pack hole 111.
For another example shown in Fig. 6, Fig. 9, preferably, the axial length of the first locating slot 2213 is L1, axial spacing between feather key 141 and positioning key 151 is L2, the axial length of groove 2212 is turned to be L3, wherein L1 > L2 > L3, therefore, insert or shift out in the process of packing tool 1 at filling service aid 2, as long as feather key 141 is turning to slip in groove 2212, positioning key 151 just remains in the first locating slot 2213, and filling pipe 21 is fixing with filling cylinder 11 circumference.
As shown in Figure 4, in the present embodiment, the lateral wall of the other end of filling pipe 21 has conical outer wall face, the end of the other end of filling cylinder 11 have for conical outer wall face against conical inboard wall face, by arranging conical outer wall face, can insert in the process of packing tool 1 at filling service aid 2, filling service aid 2 is located, axial spacing between conical inboard wall face and the first pack hole 111 equals the axial spacing between conical outer wall face and the 3rd pack hole 212, therefore, during in conical outer wall face against conical inboard wall face, filling service aid 2 docking puts in place, 3rd pack hole 212 overlaps with the first pack hole 111 and the second pack hole 121 just, now just can inject load fluid pack gravel.The lateral wall cover of filling pipe is also arranged with sealing ring, and sealing ring seals between filling cylinder and filling pipe, prevents load fluid from entering between filling cylinder and filling pipe.
As shown in Figure 3, in addition, the sheathed flow guiding head 23 being fixed with column inside one end of filling pipe 21, the other end of filling chamber 211 is closed by flow guiding head 23, the end be positioned at inside the 3rd pack hole 212 of flow guiding head 23 is hemispheric protruding 231, and load fluid is guided to radially injection the 3rd pack hole 212 by protruding 231.Such as, one end of flow guiding head 23 is against the step of filling pipe 21 inwall, and the other end of flow guiding head 23 is against the end of diversion rod 22.
In addition, in the present embodiment, the end of guide peg 22 is provided with conehead 222, to reduce the moving resistance of filling service aid 2, and has guide effect.
As shown in Figure 1, in a preferred technical scheme, the one end rotating sliding sleeve 12 is connected with swivel becket 14, and part swivel becket 14 protruding from the inside wall rotating sliding sleeve 12 forms feather key 141; Be socketed with locating ring 15 inside one end of sleeve 13, part locating ring 15 protruding from the inside wall of sleeve 13 forms positioning key 151.By arranging separately swivel becket and locating ring, being convenient to the processing and fabricating of feather key and positioning key, cutting down finished cost.
Specifically, the one end rotating sliding sleeve 12 is provided with draw-in groove 123, and one end of swivel becket 14 has projection, projection inlay card is in draw-in groove, swivel becket 14 is fixing with rotation sliding sleeve 12 circumference, and the other end of swivel becket 14, against the step of sleeve 13 inwall, will rotate sliding sleeve 12 axial location; Locating ring 15 is connected on sleeve 13 inside wall by thread bush.
Preferably, the gap rotated between sliding sleeve 12 and filling cylinder 11 is less than the diameter of pack gravel, enter in the gap rotated between sliding sleeve 12 and filling cylinder 11 to prevent gravel and cause card sand, such as, the diameter of pack gravel is generally greater than 0.3mm, is set to be less than 0.2mm in the gap rotated between sliding sleeve 12 and filling cylinder 11.
As shown in Figure 1, Figure 10 shows, in another specific embodiment, the sidewall of filling cylinder 11 wears and is fixed with spacer pin 112, the lateral wall of rotation sliding sleeve 12 is arranged with the circumferential stopper slot 122 of circular arc, spacer pin 112 stretches in circumferential stopper slot 122, and can rotate sliding sleeve 12 rotate time circumferentially stopper slot 122 slide.By arranging spacer pin 112 and circumferential stopper slot 122, the rotational angle rotating sliding sleeve 12 can be limited, play position-limiting action.
Preferably, the circumferential lengths (or arc length) of stopper slot 122 is substantially equal to the circumferential lengths of rotation slot 2212, the circumferential lengths of rotation slot 2212 such as refers to the arc length of the projection of rotation slot 2212 on the sagittal plane of guide peg 22, or rather, the central angle of the circular projection of rotation slot 2212 on the sagittal plane of guide peg 22, equals the central angle of stopper slot 122.Therefore, feather key 141 slides once along rotation slot 2212, spacer pin 112 also circumferentially stopper slot 122 slide once.
Again as shown in Figure 1, packing tool 1 also comprises the anti-impact cover 16 be socketed in outside filling cylinder 11, and have cannelure 161 between anti-impact cover 16 and filling cylinder 11, cannelure 161 is communicated with the first pack hole 111.Specifically, one end of anti-impact cover 16 is threaded with filling cylinder 11, and have opening between the other end inside wall of anti-impact cover 16 and the lateral wall of filling cylinder 11, this opening is cannelure 161.By arranging anti-impact cover 16, when load fluid penetrates from the first pack hole 111, can prevent load fluid from directly impacting the borehole wall, thus the borehole wall played a protective role.
As shown in Figure 1, packing tool 1 also comprises top connection 17, and top connection 17 is connected to the other end of filling cylinder 11, and is communicated with filling cylinder 11, is connected with the bottom of sand control pipe by top connection 17.
Rotation sleeve type bottom filling device for gravel pack of the present invention, in use, bottom the sand control pipe first packing tool 1 being connected to down-hole by top connection 17, then the filling pipe 21 of filling service aid 2 is connected with working string, by filling service aid 2 G.I.H, dock with packing tool 1, ground transfer or on carry working string, the movement of filling service aid 2 can be realized.
The operating principle of the rotation sleeve type bottom filling device for gravel pack of the present invention is:
1, the opening of device for filling: transfer filling service aid 2 on ground, after filling service aid 2 G.I.H, enter in packing tool 1 by top connection 17, along with filling service aid 2 axially moves into, the feather key 141 of packing tool 1 is introduced into the guide channel 2214 of filling service aid 2, then under the guiding of guide channel 2214, enter the first locating slot 2213, now filling service aid 2 is fixing with packing tool circumference, positioning key 151 also enters the first locating slot 2213 subsequently, and due to L2 < L1, now feather key 141 and positioning key 151 are all positioned at the first locating slot 2213, along with filling service aid 2 continues to move into, feather key 141 enters and turns to groove 2212, and along turning to groove 2212 to slide, driven rotary sliding sleeve 12 rotates to first direction (being such as clockwise direction) simultaneously, when feather key 141 is from when turning to groove 2212 to skid off, rotation sliding sleeve 12 just turns to the second pack hole 121 and overlaps and the position be communicated with the first pack hole 111, in this process, positioning key 151 is positioned at the first locating slot 2213 all the time, and filling service aid 2 is fixing with filling cylinder 11 circumference, feather key 141 enters the second locating slot 2213 afterwards, when filling service aid 2 moves axially to the conical outer wall face of filling pipe 21 against the conical inboard wall face of filling cylinder 11, filling service aid 2 docking puts in place, 3rd pack hole 212 just overlaps with the first pack hole 111 with the second pack hole 121 and is communicated with, so far, device for filling is opened, as shown in Figure 4, load fluid can be injected to down-hole from ground, load fluid enters filling chamber 211, flow through the 3rd pack hole 212 more successively, second pack hole 121, first pack hole 111, cannelure 161 enters the filling position between packing tool and the borehole wall,
2, the closedown of device for filling: after completing gravel pack, carry filling service aid 2 on the ground, the withdrawal process of filling service aid 2 be just in time above-mentioned under enter the inverse process of process, namely along with filling service aid 2 axially shifts out, feather key 141 is entered by the second locating slot 2213 and turns to groove 2212, driven rotary sliding sleeve 12 rotates to second direction (being such as counterclockwise), when feather key 141 is from when turning to groove 2212 to skid off, rotate the position that sliding sleeve 12 turns to the second pack hole 121 and the first pack hole 111 circumferential misalignment just, so far, device for filling is closed, as shown in Figure 7, filling service aid 2 can be shifted out outside packing tool completely, and on carry to ground.
The foregoing is only the schematic detailed description of the invention of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.And it should be noted that, each ingredient of the present invention is not limited in above-mentioned overall applicability, the each technical characteristic described in manual of the present invention can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the present invention covers other relevant with this case inventive point in the nature of things and combines and embody rule.
Claims (14)
1. for a rotation sleeve type bottom filling device for gravel pack, it is characterized in that, the described rotation sleeve type bottom filling device for gravel pack comprises:
Packing tool, cylindrically, the rotation sliding sleeve comprising filling cylinder and can be set in rotationally inside described filling cylinder, the sidewall of described filling cylinder runs through the first pack hole, the sidewall of described rotation sliding sleeve runs through the second pack hole, and described rotation sliding sleeve makes described second pack hole overlap with described first pack hole or misplace by rotating;
Filling service aid, cylindrically, it can reciprocatingly be arranged in described packing tool vertically, and by axial reciprocating move drive described rotation sliding sleeve rotate relative to described filling cylinder, described filling service aid inside has open at one end and the filling chamber closed of the other end, and the sidewall of described filling service aid running through the 3rd pack hole having and be communicated with described filling chamber, described filling service aid makes described 3rd pack hole overlap with described second pack hole or misplace by moving axially.
2. as claimed in claim 1 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that, the inside wall of described rotation sliding sleeve is convexly equipped with feather key, the lateral wall of described filling service aid is arranged with gathering sill, described gathering sill comprises and spirally turns to groove, described filling service aid and described filling cylinder circumference fixing and along the moving axially of described filling cylinder time, described feather key by along described in turn to groove to slide to drive described rotation sliding sleeve to rotate relative to described filling cylinder.
3., as claimed in claim 2 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that,
Described packing tool also comprises sleeve, and described sleeve connection, in one end of described filling cylinder, the inside wall of described sleeve is convexly equipped with positioning key;
Described gathering sill also comprises and turns to groove to connect and first locating slot parallel with the central axis of described filling service aid with described, and described filling service aid and described filling cylinder circumference to be fixed by sliding along described first locating slot by described positioning key;
Wherein, when described filling service aid and described filling cylinder circumference are fixed, and during along the position moved axially to described 3rd pack hole overlaps with described first pack hole of described filling cylinder, described second pack hole is all communicated with described 3rd pack hole with described first pack hole; When described filling service aid is along the position moved axially to described 3rd pack hole and described first pack hole axile displacement of described filling cylinder, described second pack hole and described first pack hole circumferential misalignment.
4. as claimed in claim 3 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that, described filling service aid also comprises filling pipe and guide peg, described filling pipe inside forms described filling chamber, described 3rd pack hole is opened on the sidewall of described filling pipe, described guide peg is connected with one end of described filling pipe, and described gathering sill is recessed on the lateral wall of described guide peg.
5., as claimed in claim 3 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that,
Described feather key is between described second pack hole and described positioning key;
The described slot that turns to is between described 3rd pack hole and described first locating slot.
6. as claimed in claim 5 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that, described gathering sill also comprises spiral guide channel and second locating slot parallel with described first locating slot, turn to described in described first locating slot is connected between groove and described guide channel, the described groove that turns to is connected between described first locating slot and described second locating slot, and the circumferential groove width of described guide channel increases to the one end away from described first locating slot gradually near one end of described first locating slot.
7., as claimed in claim 3 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that, one end of described rotation sliding sleeve is connected with swivel becket, and the part described swivel becket protruding from the inside wall of described rotation sliding sleeve forms described feather key; Be socketed with locating ring inside one end of described sleeve, the part described locating ring protruding from the inside wall of described sleeve forms described positioning key.
8. as claimed in claim 4 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that, the flow guiding head of column is arranged with inside one end of described filling pipe, the other end of described filling chamber is closed by described flow guiding head, the end be positioned at inside described 3rd pack hole of described flow guiding head is hemispheric projection, and load fluid is guided to and radially penetrates described 3rd pack hole by described projection.
9. as claimed in claim 4 for the rotation sleeve type bottom filling device of gravel pack, it is characterized in that, the lateral wall of the other end of described filling pipe has conical outer wall face, the end of the other end of described filling cylinder have for described conical outer wall face against conical inboard wall face, the axial spacing between described conical inboard wall face and described first pack hole equals the axial spacing between described conical outer wall face and described 3rd pack hole.
10. the rotation sleeve type bottom filling device for gravel pack as described in any one of claim 3 to 9, it is characterized in that, the axial length of described first locating slot is L1, axial spacing between described feather key and described positioning key is L2, the described axial length of groove that turns to is L3, wherein L1 > L2 > L3.
11. rotation sleeve type bottom filling devices for gravel pack as described in any one of claim 3 to 9, it is characterized in that, the sidewall of described filling cylinder is equipped with spacer pin, the lateral wall of described rotation sliding sleeve is arranged with the circumferential stopper slot of arc, described spacer pin stretches in described circumferential stopper slot, and can slide along described circumferential stopper slot when described rotation sliding sleeve rotates.
12. as claimed in claim 11 for the rotation sleeve type bottom filling device of gravel pack, and it is characterized in that, the circumferential angle of described stopper slot equals the circumferential angle of described rotation slot.
13. rotation sleeve type bottom filling devices for gravel pack as described in any one of claim 1 to 9, it is characterized in that, described packing tool also comprises the anti-impact cover be socketed in outside described filling cylinder, have cannelure between described anti-impact cover and described filling cylinder, described cannelure is communicated with described first pack hole.
14. rotation sleeve type bottom filling devices for gravel pack as described in any one of claim 1 to 9, it is characterized in that, described packing tool also comprises top connection, and described top connection is connected to the other end of described filling cylinder, and is communicated with described filling cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020888.6A CN105484708B (en) | 2015-12-30 | 2015-12-30 | Rotary sliding sleeve type bottom filling device for gravel filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020888.6A CN105484708B (en) | 2015-12-30 | 2015-12-30 | Rotary sliding sleeve type bottom filling device for gravel filling |
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| Publication Number | Publication Date |
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| CN105484708A true CN105484708A (en) | 2016-04-13 |
| CN105484708B CN105484708B (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511020888.6A Active CN105484708B (en) | 2015-12-30 | 2015-12-30 | Rotary sliding sleeve type bottom filling device for gravel filling |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4469178A (en) * | 1983-04-29 | 1984-09-04 | Solum James R | Well gravel packing method |
| CN200978658Y (en) * | 2006-08-23 | 2007-11-21 | 马绍国 | Sand-proof and filling tool for oil well |
| CN203239299U (en) * | 2013-03-29 | 2013-10-16 | 中国石油天然气股份有限公司 | Filling device for gravel filling in horizontal well pipe |
| CN203394467U (en) * | 2013-05-27 | 2014-01-15 | 中国石油天然气股份有限公司 | Horizontal well subsection gravel packing service tool |
| CN203420685U (en) * | 2013-07-16 | 2014-02-05 | 中国石油天然气股份有限公司 | Butt joint auxiliary device for horizontal well subsection gravel packing |
| CN205445562U (en) * | 2015-12-30 | 2016-08-10 | 中国石油天然气股份有限公司 | Rotary sliding sleeve type bottom filling device for gravel filling |
-
2015
- 2015-12-30 CN CN201511020888.6A patent/CN105484708B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4469178A (en) * | 1983-04-29 | 1984-09-04 | Solum James R | Well gravel packing method |
| CN200978658Y (en) * | 2006-08-23 | 2007-11-21 | 马绍国 | Sand-proof and filling tool for oil well |
| CN203239299U (en) * | 2013-03-29 | 2013-10-16 | 中国石油天然气股份有限公司 | Filling device for gravel filling in horizontal well pipe |
| CN203394467U (en) * | 2013-05-27 | 2014-01-15 | 中国石油天然气股份有限公司 | Horizontal well subsection gravel packing service tool |
| CN203420685U (en) * | 2013-07-16 | 2014-02-05 | 中国石油天然气股份有限公司 | Butt joint auxiliary device for horizontal well subsection gravel packing |
| CN205445562U (en) * | 2015-12-30 | 2016-08-10 | 中国石油天然气股份有限公司 | Rotary sliding sleeve type bottom filling device for gravel filling |
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| Publication number | Publication date |
|---|---|
| CN105484708B (en) | 2018-04-03 |
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