CN103982167A - Staged fracturing apparatus with full-bore ball throwing sliding sleeve - Google Patents
Staged fracturing apparatus with full-bore ball throwing sliding sleeve Download PDFInfo
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- CN103982167A CN103982167A CN201410221000.4A CN201410221000A CN103982167A CN 103982167 A CN103982167 A CN 103982167A CN 201410221000 A CN201410221000 A CN 201410221000A CN 103982167 A CN103982167 A CN 103982167A
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Abstract
The invention discloses a staged fracturing apparatus with a full-bore ball throwing sliding sleeve. The staged fracturing apparatus with the full-bore ball throwing sliding sleeve comprises a plurality of packers, oil pipes connected with the various packers, and ball throwing sliding sleeve devices are orderly arranged on the oil pipes between the packers; each ball throwing sliding sleeve comprises a counting device and a plugging device, the two of which are communicated with the oil pipes and connected with each other; the counting devices and the plugging devices in all of the ball throwing sliding sleeve devices have the same inner diameter. The staged fracturing apparatus with the full-bore ball throwing sliding sleeve is capable of carrying out fracturing operation under the circumstance that the diameter of an oil pipe is not changed, and has the advantages of large full bore, more enough fluid channel provided in contrast with a common ball throwing sliding sleeve, and the like.
Description
Technical field
The invention belongs to oil and gas exploitation equipment, be specifically related to a kind of full-bore pitching sliding sleeve staged fracturing equipment.
Background technology
In modern oil-gas mining, fracturing work is a kind of very effective volume increase way.Pitching sliding sleeve is a kind of downhole tool of realizing oil jacket annular space switch in horizontal bare hole or cased well separate zone production or pressure break.By ground, to oil pipe pitching, the unlatching of sliding sleeve is realized in the face of oil pipe pressurizes in ground, and well liquid passes to payzone by the perforate of sliding sleeve by pressure, and payzone is carried out to pressure break.For same specification oil pipe, generally there is the supporting steel ball of multiple diameter, coordinate the setting aperture of pitching sliding sleeve, can realize the multilayer stratified operation of simultaneously going into the well.The technology of pitching sliding sleeve, no more than adopting the steel ball of different-diameter and the setting of pitching sliding sleeve of respective aperture to match, from small to large, from top to bottom, realizes stratified operation both at home and abroad.But owing to being subject to the restriction of tubing diameter size and the requirement of latus rectum, a minute number of stages for steel ball size is restricted, and less compared with the little latus rectum that makes because of the setting aperture of lower floor, is unfavorable for the lifting of pressure break production efficiency.
Summary of the invention
The object of this invention is to provide a kind of full-bore pitching sliding sleeve staged fracturing equipment that operation is opened in multiple zone layering of realizing in the situation that tubing diameter is constant.
The technical scheme that realizes the object of the invention employing is:
Full-bore pitching sliding sleeve staged fracturing equipment, comprises some packers, the oil pipe being connected with each packer and is located at successively the pitching sliding bush apparatus on oil pipe between packer; Described pitching sliding bush apparatus comprises with described oil pipe and being communicated with and interconnective counting device and plugging device, and counting device and plugging device in all pitching sliding bush apparatus all have identical internal diameter.
Described counting device, comprise the first body, be actively installed in the first body and with tubular slip mandrel and the pitching of the first body sealing, on the inwall of described the first body, be axially arranged with some the first room grooves, described slip mandrel is provided with, lower two group of first lobe door, every group of first lobe door forms by the first lobe piece and the first sealing ring, described the first lobe piece is movably arranged on slip mandrel and matches with the first room groove on pitching and the first body through slide cores shaft wall, described the first sealing ring is located at the top of the first lobe piece in barrel and matches with pitching.
Described the first body is threaded connection and is formed by the first top connection and the first cylindrical shell, and described the first room groove and slip mandrel are located on the first cylindrical shell; The two ends up and down of described slip mandrel are provided with the first elastic claw head matching with the first room groove on the first cylindrical shell; The size of described the first lobe piece is greater than the barrel thickness of slip mandrel; Distance between distance between two the first lobe pieces in described upper and lower two group of first lobe door and adjacent two the first room grooves is unequal.
Another kind of counting device provided by the invention, comprises the second body, is located at orienting cover, turning set, opening sleeve and central tube in the second body; Described orienting cover and opening sleeve are by being separately fixed at up and down on the second body, described central tube is set in orienting cover and axially moves, in the lower end of central tube, be provided with the cushion rubber coordinating with pitching, the week of described orienting cover and central tube is upwards respectively equipped with the ratchet of mutual dislocation, described turning set is set on central tube and by the return spring being located in the second body and supports, turning set is provided with ratchet and matches with the ratchet on described orienting cover and central tube, and turning set and opening sleeve form motion to axial on a circumferential desired location.
Ratchet mutual dislocation 1/2 phase place on described central tube and orienting cover; Described turning set and opening sleeve move to axial by be located at guide pad on turning set or axially open respectively be located at axially open on opening sleeve or guide pad and match and form; Described the second body is threaded and forms successively by the second top connection, the second cylindrical shell and housing, described orienting cover, turning set and opening sleeve are located in the second cylindrical shell, described central tube is located in the second cylindrical shell and housing, and described return spring is located between described turning set and housing.
Described plugging device comprises the 3rd body, be actively installed in the 3rd body with in described counting device, slide mandrel or central tube matches and with the shutoff pipe of the 3rd body sealing, be located in the 3rd body and by the first shearing nail and be connected the shear sleeve that is positioned at shutoff pipe below with the 3rd body, be set in shutoff pipe and shear sleeve interior and follow closely by the second shearing the tubular ball seat being connected with shutoff pipe; Between described shutoff pipe and shear sleeve, be provided with the second room groove; In described ball seat, be provided with the second lobe door, the second lobe door is comprised of the second lobe piece and the second sealing ring, described the second lobe piece is movably arranged on ball seat and matches with pitching and the second room groove through ball seat barrel, and described the second sealing ring is that two upper and lowers that are located at respectively the second lobe piece in ball seat barrel match with pitching; The inwall of described the 3rd body is provided with draw-in groove, and described shutoff pipe is provided with the second elastic claw head and matches with the draw-in groove on the 3rd body, on shutoff pipe and the 3rd body, be respectively equipped with can be corresponding first, second through hole; In described shear sleeve, lower end is provided with the first seam coordinating with described ball seat, and the lower end in described the 3rd body is provided with the second seam coordinating with shear sleeve.
Described the 3rd body is from top to bottom threaded connection and forms successively by center tap, shearing cylinder and lower contact; Through hole and draw-in groove on described the 3rd body are located on center tap, and described shutoff pipe is located in center tap; Described first shears nail is located at described shearing cylinder above, and described shear sleeve is located to be sheared in cylinder; Seam on described the 3rd body is located in described lower contact.
Distance between described the first seam and described ball seat equals the distance between described the first through hole and the second through hole.
Between described the second seam and described shear sleeve, be provided with suitable distance; The size of described the second lobe piece is greater than the barrel thickness of ball seat.
In described the second lobe door, the second lobe piece is 4 that are circular layout.
The present invention, because the counting device in all pitching sliding bush apparatus and plugging device all adopt identical internal diameter, can implement fracturing work in the situation that not changing the logical oily diameter of oil pipe, has the following advantages:
1) possess the function of multistage quantity hierarchical control fracturing work, layering quantity is not limited by tubing diameter;
2) because tubing diameter is constant, can possess larger interior latus rectum, compare the fluid passage that can provide enough with common pitching sliding sleeve;
3) after pitching is setting, can guarantee settingly, reliably bear frac pressure;
4) be applicable to the pitching mode of operation of standard, make operation generalization, simplify.
Below in conjunction with accompanying drawing, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of counting device in the present invention.
Fig. 3 is the operating principle schematic diagram of counting device shown in Fig. 2.
Fig. 4 is the structural representation of another kind of counting device in the present invention.
Fig. 5 is the operating principle schematic diagram of counting device shown in Fig. 4.
Fig. 6 is the structural representation of plugging device in the present invention.
Fig. 7 is the operating principle schematic diagram of plugging device.
Fig. 8 is operating principle schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, full-bore pitching sliding sleeve staged fracturing equipment provided by the invention, comprises some packers 4, the oil pipe 3 being connected with each packer 4 and is located at successively the pitching sliding bush apparatus on oil pipe 3 between packer 4; Described pitching sliding bush apparatus comprises and being communicated with described oil pipe 3 and interconnective counting device 1 and plugging device 2 or counting device 3 and plugging device 2, counting device 1 and plugging device 2 in all pitching sliding bush apparatus all have identical internal diameter, between two adjacent packers 4, form payzone.
Described counting device 1, as shown in Figure 2, comprise the first body, the first body is threaded connection and is formed by the first top connection 101 and the first cylindrical shell 102, the quantity that is axially arranged with some the first room groove 107, the first room grooves 107 on the inwall of the first cylindrical shell 102 requires to arrange according to the counting of counter, in the first cylindrical shell 102, be movably equipped with tubular slip mandrel 106, the two ends up and down of tubular slip mandrel 106 are provided with the first elastic claw head 104 matching with the first room groove 107 on the first cylindrical shell 102, tubular slip mandrel 106 is provided with between O shape circle the 105 and first cylindrical shell 102 and forms sealing, the middle part of slip mandrel 106 is provided with, lower two group of first lobe door, every group of first lobe door forms by 4 that are circular layout (or six) first lobe pieces 109 and first sealing ring 108, the size of the first lobe piece 109 is greater than the barrel thickness of slip mandrel 106, the first lobe piece 109 is movably arranged on slip mandrel 106 and matches with the first room groove 107 on pitching 103 and the first cylindrical shell 102 through slip mandrel 106 barrels, on, distance between distance between two the first lobe pieces 109 in lower two group of first lobe door and adjacent two the first room grooves 107 is unequal, make when one of them the first lobe piece 109 coordinates with a first room groove 107, another the first lobe piece 109 does not match with other the first room groove 107, the first sealing ring 108 is located at the top of the first lobe piece 109 in slip mandrel 106 barrels and matches with pitching 103.
The operating principle of counting device 1 as shown in Figure 2 and Figure 3.Counting device 1 is slip counting structure, and the first room groove 107 numbers on the first cylindrical shell 102 being matched by the first lobe door mesopetalum piece 109 with on slip mandrel 106 are counted.Pressurization after steel pitching 103 sealings, 2 groups of lobe pieces 109 that promote slip mandrel 106 are alternately closed and opening action, and steel ball 103 of every mistake completes the cycle one time, promotes elastic claw head 104 and moves down a groove, realizes counting.The concrete action of counting device 1 is as follows:
When the position of the first lobe piece 109,, can in the first room groove 107, dodge when relative with the first room groove 107 on the first cylindrical shell 102, pitching 103 is passed through, this lobe door is open mode.Otherwise lobe piece 109 is without dodging space, and pitching 103 cannot be passed through, and is closed condition.Counting device 1 when original position as shown in Figure 2, close by the epivalve door in two group of first lobe door, and hypovalve door is opened, and when pitching 103 falls into this device, pitching 103 is withstood by the lobe piece 109 in epivalve door, and form sealing with the first sealing ring 108; Now slide and have O shape circle 105 to seal between mandrel 106 and the first cylindrical shell 102, tubing pressure promotes slip mandrel 106 relative the first cylindrical shell 102 down sliding one segment distances, until the lobe piece 109 in epivalve door is opened, lobe piece 109 in hypovalve door is closed, steel ball falls between the lobe piece 109 of two lobe doors, as shown in (a) in Fig. 3; Therefore pitching 103 continues to promote slip mandrel 106 relative the first cylindrical shell 102 down slidings under tubing pressure, passes through smoothly, until the lobe piece 109 in hypovalve door is opened pitching 103 as shown in (b) in Fig. 3.Now, whole counting device 1 is by a pitching 103, meter digital of relative the first cylindrical shell 102 down sliding of slip mandrel 106, the number of meter digital is determined by being provided for the number N of the first room groove 107 of counting as required, for the first room groove 107 of counting, below slip mandrel 106, first the first room groove 107 of the first lobe piece 109 belows of one group of first lobe door is counted, as shown in Figure 2.The first elastic claw head 104 on slip mandrel 106 matches and is mainly used in sliding the location of mandrel 106 in sliding process with the first room groove 107 on the first cylindrical shell 102.
Figure 4 shows that another kind of counting device 3 provided by the invention, comprise the second body, be located at orienting cover 302, turning set 309, opening sleeve 311 and central tube 306 in the second body, described the second body is by the second top connection 301, the second cylindrical shell 305 and housing 312 composition that is threaded successively, described orienting cover 302, turning set 309 and opening sleeve 311 are located in the second cylindrical shell 305, wherein orienting cover 302 and opening sleeve 311 are by being separately fixed at up and down on the second cylindrical shell 305, described central tube 306 is located in the second cylindrical shell 305 and housing 312, central tube 306 is set in orienting cover 302 by establishing locating piece 303 thereon and matches and axially move with slotted eye 304 on orienting cover 302, in the lower end of central tube 306, be provided with the cushion rubber 315 coordinating with steel pitching 316, upwards be respectively equipped with in the week of described orienting cover 302 and central tube 306 ratchet 307,307 of mutual dislocation ', the ratchet 307 on orienting cover 302 and central tube 306,307 ' mutual dislocation, 1/2 phase place (distance between ratchet and ratchet is phase place), described turning set 309 is set on central tube 306, in lower step in housing 312, be provided with packing ring 314, turning set 309 is supported by the return spring 313 being located between itself and housing 312 inner washers 314, turning set 309 is provided with inner ring ratchet 308 and ratchet 307 on described central tube ' match, on the outer wall of turning set 309, being also provided with single outer ring ratchet 317 matches with the ratchet 307 on described orienting cover 302, opening sleeve 311 is provided with axially open 310 on a circumferential desired location, turning set 309 matches with opening 310 on opening sleeve 311 by the outer ring ratchet 317 that can be used as guide pad on it and forms motion to axial (or turning set is by establishing axially open thereon and being located at the to axial motion of formation between them that match of guide pad on opening sleeve).
The operating principle of counting device 3:
See Fig. 4, Fig. 5, first according to counting, need to determine the ratchet 307 number conduct counting ratchets on orienting cover 302, when pitching 103 enters counting device, by central tube 306, drop on the cushion rubber 315 of its lower end, due to the magnitude of interference, pitching 103 drives central tube 306 to move downward, the inner ring ratchet 308 of central tube 306 by ratchet 307 ' act on turning set 309 promotes turning sets 309 and presses down return spring 313, make the outer ring ratchet 317 of turning set 309 deviate from the ratchet 307 of orienting cover 302, the distance that turning set 309 moves downward is spacing by opening sleeve 311, as (a) in Fig. 5; Due to the ratchet 307 on orienting cover 302 and central tube 306,307 ' mutual dislocation, 1/2 phase place, turning set 309 rotates 1/2 phase place in the tooth engagement process with central tube 306, as (b) in Fig. 5; When pitching 103 is extruded after central tube 306 by pressure, under the effect of return spring 313, turning set 309 drives central tubes 306 reply that moves upward, turning set 309 is rotated further again 1/2 phase place in the tooth engagement process with orienting cover 302, and reply original state (referring to Fig. 4), at this moment turning set 309 has turned over 1 phase place.Counting device is passed through in overlapping investment pitching 103, turning set 309 repeats above process, until last counting phase place, the single outer ring ratchet 337 of turning set 309 is just in time aimed at the opening 310 of opening sleeve 311, make central tube 306 can drive turning set 309 to move downward and stretch out housing 312, as shown in (c) in Fig. 5.
According to design of the present invention, other counting device different from above-mentioned counting device structure also can be provided, these all belong to the technical scheme being equal to counting device of the present invention it will be appreciated by those skilled in the art that, do not repeat them here.
Described plugging device, as shown in Figure 6, comprises the 3rd body, and the 3rd body is from top to bottom threaded connection and forms successively by center tap 201, shearing cylinder 213 and lower contact 218; Center tap 201 is threaded with the first cylindrical shell 102 in counting device 1 or the housing 112 in counting device 3, center tap 201 is provided with the first through hole 206, the inwall of center tap 201 is provided with lower bayonet slot 203, in center tap 201, be movably equipped with the shutoff pipe 204 matching with the central tube 306 sliding in mandrel 106 or counting device 3 in described counting device 1, shutoff pipe 204 is provided with O shape circle 207 and center tap 201 sealings; Shear in cylinder 213 and be provided with shear sleeve 216, shear sleeve 216 by the first shearing nail 215 with shear tins 213 and be connected and be positioned at shutoff pipe 204 belows; In between shutoff pipe 204 and shear sleeve 216, be arranged with tubular ball seat 209, ball seat 209 is sheared nail 208 by second and is connected with shutoff pipe 204; Between shutoff pipe 204 and shear sleeve 216, be provided with the second room groove 212; In ball seat 209, be provided with the second lobe door, the second lobe door is comprised of the second lobe piece 211 and the second sealing ring 210, second lobe piece 211 4 (or six) for being circular layout, the size of the second lobe piece 211 is greater than the barrel thickness of ball seat 209, the barrel that the second lobe piece 211 passes ball seat 209 is movably arranged on ball seat 209 and matches with pitching and the second room groove 212, the second sealing ring 210 is that two upper and lowers that are located at respectively the second lobe piece 211 in ball seat barrel match with pitching, and ball seat 209 is provided with O shape circle 219 and shear sleeve 216 sealings; Shutoff pipe 204 is provided with the second elastic claw head 202 and matches with the draw-in groove 203 being located on center tap 201 inwalls, shutoff pipe 204 be provided with can with center tap 201 on the second through hole 205 of the first through hole 206 correspondences; The interior lower end of shear sleeve 216 is provided with the first seam 214, the first seams 214 of coordinating with ball seat 209 and the distance L 2 between ball seat 209 equals the distance L 1 between the first through hole 206 and the second through hole 205; Lower end in lower contact 218 is provided with between the second seam 217, the second seams 217 of coordinating with shear sleeve 216 and shear sleeve 216 and is provided with suitable distance L 3.
The operating principle of plugging device 2 as shown in Figure 6, Figure 7, plugging device 2 when original state as shown in Figure 6, at this moment the second elastic claw head 202 of shutoff pipe 204 is positioned at the upper draw-in groove 203 on center tap 201 inwalls, the second lobe piece 211 in the second lobe door on ball seat 209 is faced toward by the vacant slot 212 forming between center tap 201 and shear sleeve 216, in open mode.Under the central tube 306 sliding in counting device 1 in mandrel 106 or counting device 3 triggers, as shown in (a) in Fig. 7, shutoff pipe 204 is pushed, center tap 201 moves down relatively, now the second lobe door on ball seat 209 is closed, and the second lobe piece 211 is return in ball seat 209, and the O shape circle 219 on ball seat 209 enters shear sleeve 216 sealing surfaces, pitching 103 falls from counting device 1, falls in ball seat 209 and forms bottom shutoff with the second sealing ring 210.As shown in (b) in Fig. 7, under the continuation effect of tubing pressure, pitching 103 drags ball seat 209 and shutoff pipe 204 until the second elastic claw head 202 of shutoff pipe 204 enters in the lower bayonet slot 203 on center tap 201 inwalls, second shears nail 208 cuts off, and at this moment the second through hole 205, the first through hole 206 on shutoff pipe 204 and center tap 201 aligns and form oil pipe passage; Then ball seat 209 falls into shear sleeve 216, and cut off the final and shear sleeve 216 of the first shearing nail 215 and together fall in lower contact 218, as shown in (c) in Fig. 7, vacant slot 212 sizes that now form between center tap 201 and shear sleeve 216 extend, make lower floor's pitching 103 pass through smoothly this ball seat 209, as shown in (d) in Fig. 7.
Plugging device 2 is before being triggered, all pitchings can be passed through smoothly, after being counted device triggering, pitching is by shutoff aperture, and under tubing pressure effect, by the second through hole 205, the first through hole 206 on shutoff pipe 204 in plugging device 2 and center tap 201, open oil pipe passage, make oil pipe internal pressure be passed to payzone, start fracturing work.
The situation of full-bore pitching sliding sleeve staged fracturing equipment of the present invention when practical application, as shown in (a) in Fig. 8-(e), first determined the number of pitching sliding bush apparatus according to pressure break payzone number.For the situation (referring to Fig. 2) that adopts counting device 1, before installing, aboveground, according to layer position, use in advance special tool to set the numerical value of counting device 1 meter digital of this layer of position, for the number N of the first room groove 107 of counting, again by the pitching sliding bush apparatus equating with the numerical value of meter digital successively connected pipes 3 lower going-into-wells, with packer 4, oil pipe 3 isolation that are provided with pitching sliding bush apparatus are formed to pressure break payzone, the sliding bush apparatus of pitching shown in Fig. 8 is 3, comprises counting device 1A-1C, plugging device 2A-2C.During use, drop into the steel pitching 103 of supporting formed objects, when pitching is passed through the counting device 1 of each layer of position N successively, trigger once counting action R, be counted as S=N-R, R=0,1,2,3 ... N, is counted as decreasing sequence of numbers relation.And for the situation (referring to Fig. 4) that adopts counting device 3, before installing in the aboveground counting device 3 of setting this layer of position according to layer position the ratchet 307(counting ratchet on orienting cover 302) numerical value, again by the pitching sliding bush apparatus that equates of numerical value with counting ratchet successively connected pipes lower going-into-well, with packer 4, the oil pipe isolation that is provided with pitching sliding bush apparatus is formed to pressure break payzone, the sliding bush apparatus of pitching shown in Fig. 8 is 3, comprises counting device 3A-3C, plugging device 2A-2C.During use, drop into the steel pitching 103 of supporting formed objects, when pitching is passed through the counting device of each layer of position successively, trigger once counting action.When steel pitching 103 falls into undermost pitching sliding bush apparatus, trigger counting device in this pitching sliding bush apparatus and count for the last time action, and start plugging device.Along with tubing pressure raises, start undermost fracturing work.Pitching of every input afterwards, successively carries out fracturing work from lower to upper.After operation completes, pitching is returned to ground with oil pipe inner fluid.
Claims (10)
1. a full-bore pitching sliding sleeve staged fracturing equipment, is characterized in that comprising some packers, the oil pipe being connected with each packer and is located at successively the pitching sliding bush apparatus on oil pipe between packer; Described pitching sliding bush apparatus comprises with described oil pipe and being communicated with and interconnective counting device and plugging device, and counting device and plugging device in all pitching sliding bush apparatus all have identical internal diameter.
2. full-bore pitching sliding sleeve staged fracturing equipment according to claim 1, it is characterized in that described counting device, comprise the first body, be actively installed in the first body and with tubular slip mandrel and the pitching of the first body sealing, on the inwall of described the first body, be axially arranged with some the first room grooves, described slip mandrel is provided with, lower two group of first lobe door, every group of first lobe door forms by the first lobe piece and the first sealing ring, described the first lobe piece is movably arranged on slip mandrel and matches with the first room groove on pitching and the first body through slide cores shaft wall, described the first sealing ring is located at the top of the first lobe piece in barrel and matches with pitching.
3. full-bore pitching sliding sleeve staged fracturing equipment according to claim 2, is characterized in that described the first body is threaded connection and is formed by top connection and cylindrical shell, and described the first room groove and slip mandrel are located on cylindrical shell; The two ends up and down of described slip mandrel are provided with the first elastic claw head matching with the first room groove on cylindrical shell; The size of described the first lobe piece is greater than the barrel thickness of slip mandrel; Distance between distance between two the first lobe pieces in described upper and lower two group of first lobe door and adjacent two the first room grooves is unequal.
4. full-bore pitching sliding sleeve staged fracturing equipment according to claim 1, is characterized in that described counting device, comprises the second body, is located at orienting cover, turning set, opening sleeve and central tube in the second body; Described orienting cover and opening sleeve are by being separately fixed at up and down on the second body, described central tube is set in orienting cover and axially moves, in the lower end of central tube, be provided with the cushion rubber coordinating with pitching, the week of described orienting cover and central tube is upwards respectively equipped with the ratchet of mutual dislocation, described turning set is set on central tube and by the return spring being located in the second body and supports, turning set is provided with ratchet and matches with the ratchet on described orienting cover and central tube, and turning set and opening sleeve form motion to axial on a circumferential desired location.
5. full-bore pitching sliding sleeve staged fracturing equipment according to claim 4, is characterized in that ratchet mutual dislocation 1/2 phase place on described central tube and orienting cover; Described turning set and opening sleeve move to axial by be located at guide pad on turning set or axially open respectively be located at axially open on opening sleeve or guide pad and match and form; Described the second body is threaded and forms successively by the second top connection, the second cylindrical shell and housing, described orienting cover, turning set and opening sleeve are located in the second cylindrical shell, described central tube is located in the second cylindrical shell and housing, and described return spring is located between described turning set and housing.
6. full-bore pitching sliding sleeve staged fracturing equipment according to claim 2, it is characterized in that comprising described plugging device the second body, be actively installed in the second body and slide in described counting device mandrel match and with the shutoff pipe of the second body sealing, be located in the second body and by the first shearing nail and be connected the shear sleeve that is positioned at shutoff pipe below with the second body, be set in shutoff pipe and shear sleeve interior and follow closely by the second shearing the tubular ball seat being connected with shutoff pipe; Between described shutoff pipe and shear sleeve, be provided with the second room groove; In described ball seat, be provided with the second lobe door, the second lobe door is comprised of the second lobe piece and the second sealing ring, described the second lobe piece is movably arranged on ball seat and matches with pitching and the second room groove through ball seat barrel, and described the second sealing ring is that two upper and lowers that are located at respectively the second lobe piece in ball seat barrel match with pitching; The inwall of described the second body is provided with draw-in groove, and described shutoff pipe is provided with the second elastic claw head and matches with the draw-in groove on the second body, on shutoff pipe and the second body, be respectively equipped with can be corresponding first, second through hole; In described shear sleeve, lower end is provided with the first seam coordinating with described ball seat, and the lower end in described the second body is provided with the second seam coordinating with shear sleeve.
7. full-bore pitching sliding sleeve staged fracturing equipment according to claim 5, it is characterized in that described plugging device comprises the second body, is actively installed on the interior shutoff pipe that matches with the central tube of described counting device and seal with the second body of the second body, is located in the second body and by the first shearing and follows closely and be connected the shear sleeve that is positioned at shutoff pipe below with the second body, is set in shutoff pipe and shear sleeve and by the second shearing and follows closely the tubular ball seat being connected with shutoff pipe; Between described shutoff pipe and shear sleeve, be provided with the second room groove; In described ball seat, be provided with the second lobe door, the second lobe door is comprised of the second lobe piece and the second sealing ring, described the second lobe piece is movably arranged on ball seat and matches with pitching and the second room groove through ball seat barrel, and described the second sealing ring is that two upper and lowers that are located at respectively the second lobe piece in ball seat barrel match with pitching; The inwall of described the second body is provided with draw-in groove, and described shutoff pipe is provided with the second elastic claw head and matches with the draw-in groove on the second body, on shutoff pipe and the second body, be respectively equipped with can be corresponding first, second through hole; In described shear sleeve, lower end is provided with the first seam coordinating with described ball seat, and the lower end in described the second body is provided with the second seam coordinating with shear sleeve.
8. according to the full-bore pitching sliding sleeve staged fracturing equipment described in claim 6 or 7, it is characterized in that described the second body is threaded connection and forms successively by center tap, shearing cylinder and lower contact from top to bottom; Through hole and draw-in groove on described the second body are located on center tap, and described shutoff pipe is located in center tap; Described first shears nail is located at described shearing cylinder above, and described shear sleeve is located to be sheared in cylinder; Seam on described the second body is located in described lower contact.
9. full-bore pitching sliding sleeve staged fracturing equipment according to claim 8, is characterized in that the distance between described the first seam and described ball seat equals the distance between described the first through hole and the second through hole.
10. full-bore pitching sliding sleeve staged fracturing equipment according to claim 9, is characterized in that being provided with suitable distance between described the second seam and described shear sleeve; The size of described the second lobe piece is greater than the barrel thickness of ball seat.
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| CN201410221000.4A CN103982167B (en) | 2014-05-23 | 2014-05-23 | A kind of full-bore pitching sliding sleeve staged fracturing equipment |
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| CN201410221000.4A CN103982167B (en) | 2014-05-23 | 2014-05-23 | A kind of full-bore pitching sliding sleeve staged fracturing equipment |
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| US9574414B2 (en) | 2011-07-29 | 2017-02-21 | Packers Plus Energy Services Inc. | Wellbore tool with indexing mechanism and method |
| US9765595B2 (en) | 2011-10-11 | 2017-09-19 | Packers Plus Energy Services Inc. | Wellbore actuators, treatment strings and methods |
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN114320227A (en) * | 2021-11-15 | 2022-04-12 | 中海油能源发展股份有限公司 | Full latus rectum pressure transmission ball seat after can cuting |
| US11566516B2 (en) | 2020-05-04 | 2023-01-31 | Baker Hughes Oilfield Operations Llc | Indexing valve system for a resource exploration and recovery system |
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| US9574414B2 (en) | 2011-07-29 | 2017-02-21 | Packers Plus Energy Services Inc. | Wellbore tool with indexing mechanism and method |
| US9765595B2 (en) | 2011-10-11 | 2017-09-19 | Packers Plus Energy Services Inc. | Wellbore actuators, treatment strings and methods |
| US11566516B2 (en) | 2020-05-04 | 2023-01-31 | Baker Hughes Oilfield Operations Llc | Indexing valve system for a resource exploration and recovery system |
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN112049605B (en) * | 2020-09-26 | 2022-11-01 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN114320227A (en) * | 2021-11-15 | 2022-04-12 | 中海油能源发展股份有限公司 | Full latus rectum pressure transmission ball seat after can cuting |
| CN114320227B (en) * | 2021-11-15 | 2023-07-28 | 中海油能源发展股份有限公司 | Full latus rectum pressure ball seat that passes after can shearing |
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Denomination of invention: Staged fracturing apparatus with full-bore ball throwing sliding sleeve Effective date of registration: 20170310 Granted publication date: 20161005 Pledgee: China Co truction Bank Corp Changsha branch Pledgor: Hunan Victor Petroleum Technology Service Co., Ltd. Registration number: 2017430000015 |
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