CN101403279A - Well bottom booster pump and its supercharging method - Google Patents
Well bottom booster pump and its supercharging method Download PDFInfo
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- CN101403279A CN101403279A CNA2008102269445A CN200810226944A CN101403279A CN 101403279 A CN101403279 A CN 101403279A CN A2008102269445 A CNA2008102269445 A CN A2008102269445A CN 200810226944 A CN200810226944 A CN 200810226944A CN 101403279 A CN101403279 A CN 101403279A
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Abstract
The invention discloses a bottom hole pressure pump and a pressurizing method thereof, wherein, the pressure pump mainly comprises a filter screen assembly, an upper end connector, a shell, a lower end fastening and an assorted double-channel drill bit. A change valve, a reversing control device, a power cylinder and a pressure cylinder are arranged in the shell sequentially, the lower end of the filter screen assembly is connected with the upper end connector by threads, the lower end of the upper end connector is connected with the shell by threads and sealed, the lower end fastening is connected with the shell by threads and sealed, and the left end of the lower end fastening props against the right end of the pressure cylinder, and presses and connects the change valve, the power cylinder and the pressure cylinder in the shell with a locking part arranged in the upper end connector. The invention can drastically improve the drilling speed, reduce the drilling cost and shorten the drilling period, and has relatively simple structure, short total length, low movement velocity, long service life, low manufacturing cost and high performance-price ratio.
Description
Technical field
The present invention relates to oil-well drilling equipment, exactly is the well bottom booster pump and the boosting method thereof that can improve medium-hard rock strata drilling speed.
Background technology
At present in field of oil drilling, the pump pressure mud that utilizes ground slush pump output is as booster pump power, cooperate in the shaft bottom supercharging and with the dual channel drill bit, realize water and mechanical combined-breaking rock, taking this significantly to improve bit speed, shorten drilling period, reduce drilling cost, is comparatively desirable technical measures.
But satisfy at well bottom booster pump under the condition of drilling well parameters, how to impel well bottom booster pump to reach the industrial application requirements value, and as far as possible near the application life of drill bit, become one of key factor that can this technology apply; Secondly, how to obtain bigger pressure ratio by the structure of relative simple possible, less supercharging progression, a plurality of small nozzles of guaranteeing the dual channel drill bit have enough broken rock pressure power and flow, and make giant have needed impact force of the bottom hole flushing of finishing and slug flow speed, also be the problem that shaft bottom supercharging drilling technology be can not ignore.
As U.S. Pat 005787998A, it adopts power cylinder to be located at the middle conventional single-cylinder dual-action supercharging scheme of two pressurized cylinders, make pilot valve by the conventional structure guiding valve of installing side by side, two cone valves are made the commutation main valves and the reversal valve formed is realized commutation, this supercharging pump structure relative complex, almost utilize the flow of slush pump 100% to carry out supercharging, its runner is narrow, flow velocity is too high, erosion is serious, and the speed of movement parts is too fast, impact very big, mechanical breaking is frequent, application life is shorter, these difficult problems all can't solve, and in addition, this booster pump can only utilize power cylinder drain charge mud to finish bottom hole flushing, because the giant pressure drop has only about 3.15MPa, therefore the impact force deficiency has influenced bottom hole flushing, has weakened the function of hydraulic drilling.
Chinese patent CN 02204123.0 " the waterpower automatic pressure pump " announced and for example, this scheme will be finished bottom hole flushing by giant from most of mud of slush pump, small part mud enters the shunt circuit of power cylinder by reversal valve, its advantage is a lot, but there is the many places fault of construction, the key element pilot valve that for example influences the booster pump reliability is conventional sliding valve structure, when this type of reversal valve is faced the sand grains wear working condition of mud medium in commutation process, be difficult to guarantee by the wear-and corrosion-resistant material fully the application life of its friction sealed pair, the more important thing is owing to have mud to pass through all the time between sealing pair, meet the problem of sand jam and can't avoid.
Summary of the invention
The present invention aims to provide a kind of longer service life, adaptive surface is wideer, performance is better, cost performance is higher well bottom booster pump and boosting method thereof, so that supporting with the dual channel drill bit, realize waterpower and mechanical combined-breaking rock, improve bit speed, reduce drilling cost, shorten drilling period.
The technical solution used in the present invention is:
A kind of well bottom booster pump, comprise the screen pack assembly, go up end joint, housing, lower end fastening and supporting dual channel drill bit, be provided with reversal valve, control device for reversing, power cylinder and pressurized cylinder in the described housing successively, the lower end of screen pack assembly is connected with the upper end joint screw thread, the lower end of last end joint is threaded with housing and seals, the lower end fastening is threaded with housing and seals, the left end of lower end fastening withstands the right-hand member of pressurized cylinder, and with the locking member that is contained in the end joint reversal valve, power cylinder and pressurized cylinder is crimped in the housing; Form the pump pressure mud sprue that directly leads to dual channel drill bit giant between the outer rim of reversal valve, power cylinder and pressurized cylinder and the inner surface of housing; The spool of reversal valve links to each other with control device for reversing, pump pressure mud moves back and forth by reversal valve control power cylinder, and drive synchronous left lateral of pressurized cylinder or right lateral, the right-hand member of power cylinder and the left end of pressurized cylinder are by a shared cylinder cap separation and sealing is arranged, the left end of power cylinder links to each other with the right-hand member of reversal valve and sealing is arranged, pressurized cylinder has independently cylinder barrel and piston, its piston rod is connected with the power cylinder piston and on shared cylinder cap sealing is housed, pump pressure filtering slurry net is arranged on the pressurized cylinder cylinder barrel, pump pressure mud is from pump pressure filtering slurry Netcom toward the pressurized cylinder inner chamber, and the high pressure of pressurized cylinder is discharged and sprayed from high pressure nozzle by one way valve.
Further, well bottom booster pump of the present invention can be according to the difference of drilling depth and the force value size of pump pressure giant pressure drop, adopt the one-level power cylinder respectively, second motive force cylinder or three grades of power cylinder schemes, and can select two types reversal valve for use according to pressure mud flow rate size and booster pump specification size, work as flow, when specification is big, can adopt by the two-position four-way guiding valve and make pilot valve, make the combined directional valve of main valve by cartridge valve, work as flow, specification hour, can directly adopt the two-position four-way guiding valve to make reversal valve, the pressurized cylinder structure is according to booster pump work well depth difference, can adopt two kinds of structural concepts, use once input when being used for middle-deep well, twice discharge structure is when being used for shallow well, with bringing into, the difference input and output scheme of discharge opeing one way valve.
A kind of well bottom booster pump boosting method, by drill string the power cylinder of introducing well bottom booster pump by reversal valve from the partial discharge of ground slush pump is used as power, the flow of shunting less than 1 liter/second from the slush pump total flow enters pressurized cylinder and is increased to super-pressure again, spray the waterpower cutting of finishing bottom rock from the small nozzle of dual channel drill bit, all the other most of flows directly spray from dual channel drill bit giant by the pump pressure mud sprue of the outer rim formation of booster pump housing and a plurality of parts, the shaft bottom landwaste of realization after to waterpower and drill bit Mechanical Crushing purifies and removes, and the mud of final and small nozzle ejection and collaborate to finish jointly from the weary power mud that power cylinder is discharged and take rock and return to ground.
The present invention and dual channel drill bit are supporting, can significantly improve bit speed, reduce drilling cost, shorten drilling period, and structure is simple relatively, total length is little, movement velocity is low, long service life, low cost of manufacture, cost performance height.
Description of drawings
Fig. 1 is the structure and the hydraulic schematic diagram of well bottom booster pump of the present invention;
Structural representation when Fig. 2 is in off working state for three grades of automatic pressure pumps of first embodiment of the invention, wherein Fig. 2 a, Fig. 2 b, Fig. 2 c, Fig. 2 d dock successively;
Fig. 3 is the A-A sectional drawing of Fig. 2-3, and wherein Fig. 3 a is first kind of structural representation of power cylinder cylinder body, and Fig. 3 b is the another kind of structural representation of power cylinder cylinder body;
Fig. 4 is the B-B sectional drawing of Fig. 2-3;
Fig. 5 is the C-C sectional drawing of Fig. 2-4;
Fig. 6 is the D-D sectional drawing of Fig. 2-4;
Fig. 7 is the structural representations of three grades of automatic pressure pump pilot valve cores of first embodiment of the invention when left position, and wherein Fig. 7 a, Fig. 7 b, Fig. 7 c, Fig. 7 d dock successively;
Fig. 8 is the I portion enlarged diagram of Fig. 7-3;
Fig. 9 is the A-B-C-D-E-F-G-H sectional drawing of Fig. 7, and wherein Fig. 9 a, Fig. 9 b, Fig. 9 c, Fig. 9 d dock successively;
Figure 10 is the structural representations of three grades of automatic pressure pump pilot valve cores of first embodiment of the invention when right end position, and wherein Figure 10 a, Figure 10 b, Figure 10 c, Figure 10 d dock successively;
Figure 11 is the II portion enlarged diagram of Figure 10-3;
Figure 12 is the A-B-C-D-E-F-G-H sectional drawing of Figure 10, and wherein Figure 12 a, Figure 12 b, Figure 12 c, Figure 12 d dock successively;
Figure 13 be second embodiment of the invention secondary automatic pressure pump pilot valve core when left position, the structural representation of its E-F section;
Figure 14 be third embodiment of the invention one-level automatic pressure pump pilot valve core when left position, the structural representation of its E-H section;
Figure 15 is the K portion enlarged diagram of Figure 14;
Figure 16 is the L portion enlarged diagram of Figure 14;
Figure 17 is the M portion enlarged diagram of Figure 14;
Figure 18 is the N portion enlarged diagram of Figure 14;
Figure 19 is the H-H sectional drawing of Figure 14;
Figure 20 be third embodiment of the invention one-level automatic pressure pump pilot valve core when right end position, the structural representation of its E-H section;
Figure 21 is the K portion enlarged diagram of Figure 20;
Figure 22 is the L portion enlarged diagram of Figure 20;
Figure 23 is the M portion enlarged diagram of Figure 20;
Figure 24 is the N portion enlarged diagram of Figure 20;
Figure 25 is the structural representation of pilot valve core pilot valve when left end;
Figure 26 is the X-X sectional drawing of Figure 25;
Figure 27 is the structural representation of pilot valve core cartridge valve when left end;
Figure 28 is the X-X sectional drawing of Figure 27;
Figure 29 is the B-B enlarged diagram of Figure 27;
Figure 30 is that the K of Figure 27 is to view;
Figure 31 is the A-A sectional drawing of Figure 27;
Figure 32 is the structural representation of pilot valve core pilot valve when right-hand member;
Figure 33 is the X-X sectional drawing of Figure 32;
Figure 34 is the structural representation of pilot valve core cartridge valve when right-hand member;
Figure 35 is the X-X sectional drawing of Figure 34;
Figure 36 is the A-A sectional drawing of Figure 34;
Figure 37 is the structural representation of control device for reversing;
Figure 38 directly makes reversal valve and the spool structural representation when the left end with the two-position four-way guiding valve for fourth embodiment of the invention;
Figure 39 is the I portion enlarged diagram of Figure 38;
Figure 40 is the A-A sectional drawing of Figure 38;
Figure 41 is the II portion enlarged diagram of Figure 40;
Figure 42 directly makes reversal valve and the spool structural representation when the right-hand member with the two-position four-way guiding valve for fourth embodiment of the invention;
Figure 43 is the II portion enlarged diagram of Figure 42;
Figure 44 is the structural representation of another kind of three grades of power cylinders in the fifth embodiment of the invention;
Figure 45 is the structural representation of level Four power cylinder in the sixth embodiment of the invention;
Figure 46 is the I portion enlarged diagram of Figure 45.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Description of reference numerals is as follows:
1. end joint on the screen pack assembly 2.
5. control device for reversing 6. power cylinders
7. pressurized cylinder 8. lower end fastenings
9. dual channel drill bit 21,22. locking members
23. bearing 111,111 '. arc groove
41. pilot valve 42. cartridge valves
43. discharge opeing one way valve 44. screen packs
411. pilot valve filters 413. flow guide pin bushings
414. valve pocket 415. spools
421,422. feed liquor poppet valve cores, 423,424. discharge opeing poppet valve cores
431. flat spring base 432. discharge opeing one way valve spools
433. spring 434. deep-slotted chip breakers
51. hollow stem 52. left limit pads
53. spring 54. right limit pads
55. locking nut
60,60 '. power cylinder cylinder body 61,61 ', 61 ", 61 ' ". the power cylinder piston
62. hollow piston bar 63,63 ', the 63A. intermediate hsg
64,64 '. wire loop 65,65 '. the card key
66. pressure cap 67. spacing support bars
68. joint ring 69. alignment pins
601. aperture 602,603,604,606. cylinder body radial holes
605,605 '. cylinder body aperture 611. piston glands
620. piston rod aperture 621. piston gland apertures
622,623,624. piston rod radial holes, 630. left limit steps
631. right limit step
71,73. one way valves, 72. feed liquor one way valves
73. antifouling one way valve 74. filters
75. pressurized cylinder piston 76. pressurized cylinder piston bars
77. pressurized cylinder cylinder barrel 78. pressurized cylinders left side cylinder cap
79. pressurized cylinder right-hand member cylinder cap 711,711 '. the discharge opeing one way valve
722,722 '. suck one way valve 751. pressurized cylinder piston bar radial holes
756. balancing pole 757. pressurized cylinder cylinder barrels and right end cap aperture
91. giant 92. small nozzles
Boosting method of the present invention is by drill string the power cylinder of introducing well bottom booster pump by reversal valve from the partial discharge of ground slush pump to be used as power, the flow of shunting less than 1 liter/second from the slush pump total flow enters pressurized cylinder and is increased to super-pressure again, spray the waterpower cutting of finishing bottom rock from the small nozzle of dual channel drill bit, all the other most of flows directly spray from dual channel drill bit giant by the pump pressure mud sprue of the outer rim formation of booster pump housing and a plurality of parts, the shaft bottom landwaste of realization after to waterpower and drill bit Mechanical Crushing purifies and removes, and the mud of final and small nozzle ejection and collaborate to finish jointly from the weary power mud that power cylinder is discharged and take rock and return to ground.This method adopts above-mentioned shunt circuit supercharging mode (as Fig. 1), under the situation that pressure ratio is determined, can be by changing the big or small nozzle diameter of dual channel drill bit, make drill bit obtain different assignment of traffic characteristics, not only help improving bit speed for this reason, simultaneously improved the application life of well bottom booster pump greatly.
Hydraulic principle of the present invention following (as Fig. 1): the slurry channel mouth " B " of pilot valve 41 communicates with pump pressure mud entrance " P ", pump pressure mud has been closed feed liquor poppet valve core 421 and discharge opeing poppet valve core 423, feed liquor poppet valve core 422 and discharge opeing poppet valve core 424 are in opening, pump pressure mud promotes the piston right lateral by the piston left side that feed liquor poppet valve core 422 and corresponding runner enter power cylinder 6, the weary mud on piston right side is then discharged the pump housing by the hole on discharge opeing poppet valve core 424 and one way valve 43 and the housing 3, meanwhile, the piston of power cylinder 6 drives the synchronous right lateral of piston of pressurized cylinder 7, this moment, the feed liquor one way valve 72 of pressurized cylinder 7 was in closed condition, one way valve 71 is in opening, the mud of pressurized cylinder 7 piston right side superchargings by the one way valve of opening 71 enter pressurized cylinder 7 pistons left side and and then arrive the high pressure small nozzle 92 of drill bit 9 by supercharging slurry channel and one way valve 73, when the power cylinder piston motion is arrived near the stroke end, the spool right lateral commutation of control device for reversing 5 pulling pilot valves 41, after the commutation, the pump pressure mud entrance " P " of pilot valve 41 is connected with slurry channel mouth " A ", pump pressure mud has been closed feed liquor poppet valve core 422 and discharge opeing poppet valve core 424, feed liquor poppet valve core 421 and discharge opeing poppet valve core 423 are in opening, pump pressure mud promotes the piston left lateral by the piston right side that feed liquor poppet valve core 421 and corresponding runner enter power cylinder 6, the weary mud in piston left side is discharged the pump housing by the aperture on corresponding runner and discharge opeing poppet valve core 423 and one way valve 43 and the housing 3, meanwhile, the piston of power cylinder 6 drives the synchronous left lateral of piston of pressurized cylinder 7, this moment, the feed liquor one way valve 72 of pressurized cylinder 7 was opened, in the pump pressure mud suction cylinder, and one way valve 71 is in closed condition, pressurized cylinder 7 pistons left side supercharging mud arrives the high pressure small nozzle 92 of drill bit 9 by supercharging mud runner and one way valve 73, when power cylinder 6 piston motions are arrived near the stroke end, control device for reversing 5 promotes the commutation of pilot valve 41 spool left lateral, so just realized a reciprocating reversing, the work that booster pump goes round and begins again according to this.
Embodiment one
Shown in Fig. 2-12, this well bottom booster pump is mainly by screen pack assembly 1, last end joint 2, housing 3, lower end fastening 8 and supporting dual channel drill bit 9 constitute, be provided with reversal valve 4 in the housing 3 successively, control device for reversing 5, power cylinder 6 and pressurized cylinder 7, the lower end of screen pack assembly 1 is threaded with last end joint 2, the lower end of last end joint 2 is threaded with housing 3 and seals, lower end fastening 8 is threaded with housing 3 usefulness and seals, fastening 8 left ends in lower end withstand the right-hand member of pressurized cylinder 7, and with the locking member 21 that is contained in the end joint 2,22 reversal valves 4, power cylinder 6 and pressurized cylinder 7 are crimped in the housing, be provided with bearing 23 between locking member 22 and the reversal valve 4, the contraposition that can prevent to drive reversal valve 4 rotations when locking member from tightening and influence plug hole on discharge opeing one way valve 43 and the housing forms pump pressure mud space between the inwall of reversal valve 4 and housing 3; Be distributed with multiple tracks arc groove 111 on the external surface of power cylinder cylinder body 60 along its length equably and (see Fig. 3 a), and form pump pressure mud runner between the inwall of housing 3, form the multi-point support structure simultaneously, can prevent distortion effectively, solved the unsettled defective of housing thin-walled, form pump pressure mud space between the inwall of the cylinder barrel of pressurized cylinder 7 and housing 3, have pump pressure mud runner (see figure 6) on the external cylindrical surface of its right-hand member cylinder cap 79, pump pressure mud is by the giant 91 of the through dual channel drill bit of this runner.Certainly, power cylinder cylinder body 60 ' also can the adopt structure shown in Fig. 3 b, it has the position of symmetry thickening up and down, the left and right sides be arc groove 111 ', and form pump pressure mud runner between the inwall of housing 3.
Shown in Figure 25-36, reversal valve 4 is made up of the cartridge valve 42 and the pilot valve 41 of concentric locating, the left end of cartridge valve 42 laterally is equipped with taper valve core 423 and 424 side by side, both sides are provided with the discharge opeing one way valve 43 of two symmetries, when poppet valve core 423 and 424 was opened, two discharge opeing one way valves 43 can replace respectively to the weary power fluid of well discharging by mud runner A and B; The valve body right-hand member of cartridge valve 42 vertically is equipped with poppet valve core 421 and 422 side by side, and its spool lower end communicates with the sprue of pump pressure mud to the drill bit giant by the screen pack 44 of lengthening, so that big flow to be provided; There are control mouthful " a ", " b " also to communicate with the upper end of poppet valve core 422 and 421 respectively on the right-hand member valve gap, communicate with valve body right-hand member control mouthful " a ", " b " again, be communicated with control mouth " a ", " b " on the left end valve gap by two apertures of valve body again, finally introduce the left chamber of poppet valve core 424 and 423.
The right-hand member external diameter of pilot valve 41 and power cylinder steel cylinder left end internal diameter are joined and are associated with two seals, and the left end of a plurality of apertures communicates between two seals on the mud runner A of pilot valve 41 and the power cylinder steel cylinder wall, and mud runner B directly communicates with the left chamber of power cylinder; Pilot valve centre bore left end is equipped with the spool detent mechanism of being made up of spring, fairlead and steel ball successively, and the spool right-hand member links to each other with the hollow stem 51 of control device for reversing 5.
As Figure 28,29, shown in 30, discharge opeing one way valve 43 is mainly by flat spring base 431, spool 432 and spring 433 constitute, the centre of flat spring base 431 is a cylinder, both sides are flat, one end of spring 433 is enclosed within on the cylinder of flat spring base, the other end is arranged in the recess at spool back, the conical surface of spool 432 is pressed on the weary mud scavenge port, overcoming spring force by weary mud pressure opens it, offer discharge opeing one way valve installing hole on the valve body, whole discharge opeing one way valve all is located in the installing hole, and installing hole offers twice deep-slotted chip breaker 434 symmetrically on the inwall of its port both sides, during assembling, earlier discharge opeing one way valve 43 is adjusted to orientation with deep-slotted chip breaker dislocation 90 degree, after waiting to put into installing hole, revolve again and turn 90 degrees, make flat of its both sides snap in deep-slotted chip breaker 434 just and locate; Outside the weary runner and the hole excavationg pump on the housing 3 of mud by discharge opeing one way valve 43 and flat spring base 431 both sides, discharge opeing one way valve 43 is closed when booster pump is gone into the well, and prevents that dirty mud from entering in the valve.
Shown in Fig. 2-12, power cylinder 6 is three grades of power cylinders, three grades of shared cylinder bodies 60 of power cylinder, three pistons 61 are arranged in the cylinder body 60,61 ', 61 " and two intermediate hsgs 63; 63 '; piston rod 62 is by card key 65 and pressure cap 66 and piston 61 ' link to each other; piston 61 " by block key 65 ', the left end screw thread of pressurized cylinder piston bar 76 links to each other with piston rod 62, piston gland 611 usefulness screws or screw thread that the centre bore outer circumference is provided with a plurality of apertures link to each other with piston 61, the wall upper edge of piston rod 62 is axially arranged with a plurality of apertures 620, left end directly communicates with the mud runner B of reversal valve, right-hand member by a plurality of radial holes 622 on the wall and piston 61 ' left chamber communicate, piston rod 62 right-hand member centre bores are provided with spacing support bar 67, the left side of spacing support bar 67 forms the right limit step 631 of control device for reversing, the left end external diameter cooperates with piston rod 62 and seals, the annular space that the right-hand member centre bore of the external diameter of spacing support bar 67 and piston rod 62 forms is introduced pistons 61 to the mud from reversal valve mud runner B by a plurality of radial holes on the piston rod 62 right-hand member walls 623 " left chamber; can avoid card key 65 like this; reduce the diameter of piston rod 62; and then increase effective work area; and the duct of required processing is more shallow, realizes easily; Three grades of cylinder diameter and pistons 61 that power cylinder is shared, 61 ', 61 " movable sealing is arranged between the external diameter; two intermediate hsgs 63; 63 ' with wire loop 64; 64 ' fixing; the method that wire loop is knocked in tangential punching is installed; all there is sealing its both sides, the cylinder wall of power cylinder 6 is provided with a plurality of axial aperture 605 also by a plurality of radial holes 602 on its wall, 603,604 in the future the mud of self-commutation valve mud runner A introduce piston 61 respectively, 61 ', 61 " right chamber; the external diameter of piston rod 62 and piston 61 '; 61 " centre bore static seal is arranged, with two intermediate hsgs 63,63 ' centre bore has movable sealing.
Shown in Fig. 2-4,7-4,10-4,12-4, pressurized cylinder 7 mainly is made of discharge one way valve 71, suction one way valve 72, antifouling one way valve 73, filter 74, piston 75, piston rod 76, supercharging cylinder barrel 77, left cylinder cap 78, right cylinder cap 79; The discharge opeing one way valve of being made up of spool, valve seat, spring and spring base 71 is positioned at piston 75 right-hand member centers, can introduce the annular space in pressurized cylinder 7 left chambeies to the super-pressure mud in pressurized cylinder 7 right chambeies by a plurality of radial holes on the piston rod 76 751 during this opening of valves, and finally force antifouling one way valve 73 to be opened through the aperture of supercharging cylinder barrel 77 and right cylinder cap 79, again from the high pressure small nozzle ejection of drill bit; When sucking one way valve 72 unlatchings, can be the right chamber of the sprue mud in pressurized cylinder external diameter and the housing 3 by the groove and the introducing of the runner on the right cylinder cap 79 pressurized cylinder 7 of filter 74, supercharging steel cylinder 73; Left side cylinder cap 78, right cylinder cap 79 usefulness screws or screw thread is connected with supercharging steel cylinder 77 respectively and the internal diameter of supercharging steel cylinder 77 and high pressure draining hole end are sealed, the left end of piston rod 76 links to each other with power cylinder piston rod 76, the centre bore sealing of spring base external diameter in the discharge one way valve 71 and piston rod 76.
As Fig. 8,11, shown in 37, control device for reversing 5 is by hollow stem 51 with the level and be installed in its path left limit pad 52 partly from left to right successively, spring 53, right limit pad 54 and locking nut 55 constitute, the left end of hollow stem 51 links to each other with the spool right-hand member of reversal valve 4, its path partly penetrates in power cylinder piston and the hollow piston bar thereof, piston gland 611 forms the left limit step 630 that matches with left limit pad 52 in the hole of hollow piston bar 62, the left end of spacing support bar 67 forms the right limit step 631 that matches with right limit pad 54, when power cylinder piston 61 moves near terminal point, spacing pad 52 or 54 and limited step 611 or 631 collide, compression spring 53 is behind certain value, after overcoming the frictional force of related components, drive the spool shift to right or left, realize the direction of motion of reversal valve commutation and then change power cylinder piston.
The spool of pilot valve 41 adopts T-slot to be connected with hollow stem 51, and this syndeton is flexible joint, can suitably swing, and guarantees certain activity surplus, and has the gap between the end face, and cavity herein is communicated with the weary mud scavenge port " O " of pilot valve.
Embodiment two
As shown in figure 13, the power cylinder 6 of this booster pump is the two-stage power cylinder, the shared cylinder body 60 of two-stage power cylinder, two pistons 61 are arranged in the cylinder body 60,61 ' and an intermediate hsg 63, piston 61 ' by the card key 65 ', the left end screw thread of pressurized cylinder piston bar 76 links to each other with piston rod 62, the piston gland 611 that the centre bore outer circumference is provided with a plurality of apertures 621 links to each other with piston 61 usefulness screws or screw thread, a plurality of apertures 621 left ends of piston gland 611 directly communicate with the mud runner B of reversal valve, right-hand member by a plurality of apertures 622 introduce respectively from the mud of reversal valve mud runner B piston 61 ' left chamber; In the cylinder body 60 of power cylinder 6 and piston 61,61 ' external diameter between movable sealing is arranged, piston 61 ' centre bore and piston rod 62 external diameters static seal is arranged, intermediate hsg 63 usefulness wire loops 64 are fixing, and all there is sealing wire loop 64 both sides, and intermediate hsg 63 centre bores and piston rod 62 external diameters have movable sealing; Distribute on the wall of cylinder body 60 a plurality of apertures 605 and by a plurality of radial holes 602,603 in the future the mud of self-commutation valve mud runner A introduce respectively piston 61,61 ' right chamber, the piston rod left end of pressurized cylinder 7 is threaded with the right-hand member of power cylinder hollow piston bar and seals, left side by the pressurized cylinder piston bar forms the right limit step 631 that matches with control device for reversing right limit pad, and other is identical with embodiment one.
Embodiment three
Shown in Figure 14-24, the power cylinder of this booster pump is the one-level power cylinder, piston 61 links to each other with piston rod 62 by the left end screw thread of pressurized cylinder piston bar 76, in the cylinder body 60 of power cylinder 6 and between the external diameter of piston 61 movable sealing is arranged, the centre bore of piston 61 and piston rod 62 external diameters have static seal, the right chamber that distributes a plurality of apertures 605 on the wall of cylinder body 60 and introduce piston 61 respectively by the mud of a plurality of radial holes self-commutation valve mud in 602 future runner A.
Pressurized cylinder 7 mainly by two discharge opeing one way valves 711,711 ' and two suck one way valve 722,722 ', antifouling one way valve 73, filter 74, piston 75, balancing pole 756, discharge one way valve 711,711 ' and suction one way valve 722,722 ' form by valve seat, spool, limit base, pressure cap, when sucking one way valve 722,722 ' unlatching, enter pressurized cylinder 7 left chamber ring casings and right chamber ring casing respectively by the groove on filter 74, the cylinder barrel 77, aperture and discharge opeing one way valve 722,722 ' pressure cap lower end groove from the mud of pump pressure mud sprue; When discharge opeing one way valve 711,711 ' unlatching, pressurized cylinder about 7 two chamber high-pressure slurries can be discharged high-pressure slurries by the aperture on pressure cap lower end groove and cylinder barrel 77 and the right end cap 79 757 respectively; Balancing pole 756 centers are provided with through hole and directly communicate with the weary mud scavenge port " O " of reversal valve, its left end screws in pressurized cylinder piston 75 and power cylinder piston rod 62 forms the right limit step that matches with control device for reversing right limit pad, right-hand member stretches in the shrinkage pool of pressurized cylinder end cap, the area of pressurized cylinder piston both sides is equated, draining flow equates pressure balance; Balancing pole 756 also can be for solid, and this moment, right-hand member can directly communicate with well by the aperture on right end cap 79, the housing 3.
Embodiment four
Shown in Figure 38-43, the reversal valve 4 of this booster pump ' directly adopt two-position four-way guiding valve, Shuo Ming the C-D section that just is equivalent to embodiment one Fig. 7-2 herein, remainder is identical, just repeats no more; The left end internal diameter of cylinder of power cylinder 6 and reversal valve 4 ' the right-hand member external diameter cooperate and two seals be housed, reversal valve 4 ' left end have local boss, and be provided with two seals between the inner walls, discharge opeing one way valve 43 is installed on it, position of Tu Chuing and shell inner surface do not form the pump pressure mud runner that leads to dual channel drill bit giant, reversal valve 4 ' have pump pressure mud entrance " P ", weary mud scavenge port " O " and two slurry channel mouths " A ", " B ", its mud runner A communicates between two seals with a plurality of apertures 601 of power cylinder 6 cylinder body left ends, aperture 601 is connected with the right chamber of the piston of power cylinder 6 along equally distributed mud runner in the cylinder body, chamber, a piston left side and reversal valve 4 ' mud runner B directly be communicated with, weary mud scavenge port " O " is connected by the discharge opeing one way valve 43 of two symmetric arrangement of spool inner duct and reversal valve 4 ' left side, and weary mud is by outside a plurality of aperture excavationg pumps on discharge opeing one way valve 43 and the housing 3; Reversal valve 4 ' left end be provided with in the periphery of locking member sleeve shaped filter 23 ', the two ends of this filter respectively and locking member and reversal valve 4 ' between be provided with sealing, pump pressure mud entrance " P " is directly from being positioned at reversal valve 4 ' left end introducing of filter 23 ' inside, reversal valve 4 ' the spool right-hand member link to each other with the hollow stem 51 of control device for reversing 5.
Pump pressure mud is from filtering pipe nipple 1 through the filter 23 of last end joint 2 ' the enter pump pressure slurry channel of reversal valve during work, enter power cylinder 6 pistons left side by pump pressure mud entrance " P " and slurry channel mouth " B " through valve flowing channel and promote the piston right lateral, the duct excavationg pump of the weary mud in piston right side on slurry channel mouth " A ", weary mud scavenge port " O ", discharge opeing one way valve 43 and shell 3 is external, then is the piston left lateral after the commutation.
Embodiment five
As shown in figure 44, the power cylinder 6 of this booster pump is three grades of power cylinders, three grades of shared cylinder bodies 60 of power cylinder, three pistons 61 are arranged in the cylinder body 60,61 ', 61 " and two intermediate hsgs 63; 63 '; piston rod 62 is by card key 65 and pressure cap 66 and piston 61 ' link to each other; piston 61 " by block key 65 ', the left end screw thread of pressurized cylinder piston bar 76 links to each other with piston rod 62, the piston gland 611 that the centre bore outer circumference is provided with a plurality of apertures 621 links to each other with piston 61 usefulness screws or screw thread, a plurality of apertures 621 left ends of piston gland 611 directly communicate with the mud runner B of reversal valve, and right-hand member is by a plurality of apertures 622,623 mud from reversal valve mud runner B introduce respectively piston 61 ', 61 " left chamber; In the cylinder body 60 of power cylinder 6 and piston 61,61 ', 61 " external diameter between movable sealing is arranged; piston 61 ', 61 " centre bore and piston rod 62 external diameters static seal is arranged, intermediate hsg 63,63 ' usefulness wire loop 64,64 ' fixing, all there is sealing wire loop 64,64 ' both sides, and intermediate hsg 63,63 ' centre bore and piston rod 62 external diameters have movable sealing; Distribute on the wall of cylinder body 60 a plurality of apertures 605 and by a plurality of radial holes 602,603,604 in the future the mud of self-commutation valve mud runner A introduce respectively piston 61,61 ', 61 " right chamber; This scheme owing to will avoid the card key 65 of second piston, therefore needs hollow piston bar 62 to have bigger diameter when offering inner duct 15, can have influence on effective work area of piston, but can realize purpose of the present invention equally.
As Figure 38,39,42, shown in 43, flow guide pin bushing 413 is equipped with in the valve body inner bore interference of the two-position four-way guiding valve in the various embodiments described above, its outside, the inboard has the multiple tracks groove respectively and by a plurality of apertures inside and outside groove is communicated with, the center has on the external diameter of spool 415 of through hole interference valve pocket 414 is housed, the a plurality of apertures in left end first road of valve pocket 414 are communicated with the weary mud scavenge port " O " of first road groove of the left end on the flow guide pin bushing 413 and two-position four-way guiding valve by spool 415 left ends, the first road groove and a plurality of aperture, the a plurality of apertures of twice are communicated with " B " of two-position four-way guiding valve with pump pressure mud entrance " P " mouth by spool 415 intermediate groove in the middle of the valve pocket 414, and valve pocket 414 right-hand members a plurality of apertures together are communicated with the slurry channel mouth " A " of two-position four-way guiding valve by spool 415 right-hand member grooves with weary mud scavenge port " O ".So, slide plane between spool 415, valve pocket 414 and flow guide pin bushing 413, the valve body just separates with the runner of mud is strict, the one, can avoid " sand card " occurring at slide plane, the 2nd, can avoid the wearing and tearing of slide plane rock grain, the life-span that can improve valve greatly.
Embodiment six:
As Figure 45,46 show, the power cylinder 6 of this booster pump is the level Four power cylinder, the shared cylinder body 60 of left end two-stage power cylinder, the shared cylinder body 61 of right-hand member two-stage power cylinder ', two pistons 61 are arranged in cylinder body 60,61 ' and an intermediate hsg 63, cylinder body 60 ' in two pistons 61 are arranged "; 61 " ' and intermediate hsg 63 ', piston rod 62 is by card key 65,65 ' and pressure cap 66,66 ' with piston 61 ', 61 " link to each other; piston 61 " ' by card key 65 "; the left end screw thread of pressurized cylinder piston bar 76 links to each other with piston rod 62; piston rod 62 has sealing with piston space, and piston rod and middle cylinder are stamped movable sealing; Intermediate hsg 63,63 ' respectively and cylinder body 60,60 ' usefulness wire loop 64,64 ' fixing; Intermediate hsg 63,63 ' and cylinder body between respectively be provided with two seals; Two power cylinder cylinder bodies 60 and 60 ' be provided with intermediate hsg 63A, the boss of intermediate hsg 63A or stand-alone card key as cylinder body 60,60 ' the connection location; At cylinder body 60,60 ' be provided with a joint ring 68 and an alignment pin 69, alignment pin 69 left ends have screw thread, be screwed in the silk hole of cylinder body 60, alignment pin 69 right-hand members insert cylinder body 60 ' respective aperture in locate, piston gland 611 usefulness screws or screw thread that the centre bore outer circumference is provided with a plurality of apertures 621 link to each other with piston 61, the wall upper edge of piston rod 62 is axially arranged with a plurality of apertures 620, piston 61 left ends directly communicate with the mud runner B of reversal valve, and by a plurality of radial holes 622 on piston rod 62 walls and piston 61 ' left chamber communicate, piston rod 62 right-hand member centre bores are provided with spacing support bar 67, the left side of spacing support bar 67 forms the right limit step 631 of control device for reversing, the left end external diameter of spacing support bar 67 cooperates with piston rod 62 internal diameters and seals, the annular space that the right-hand member centre bore of the external diameter of spacing support bar 67 and piston rod 62 forms from the mud of reversal valve mud runner B by a plurality of radial holes 623 on the piston rod 62 right-hand member walls, 624 introduce pistons 61 "; 61 " ' left chamber; Cylinder wall be provided with a plurality of axial aperture 605 and by a plurality of radial holes on its wall 602,606,603,604 in the future the mud of self-commutation valve mud runner A introduce respectively piston 61,61 ', 61 ", 61 " ' right chamber, the cylinder body outer rim have two or more grooves 111 or 111 ' with housing 3 internal diameters formation mud sprue.
Certainly, two, three in the power cylinder 6, level Four cylinder also can adopt independent cylinder body combination, and also all adopt the intermediate hsg 63A shown in the figure, joint ring 68 and alignment pin 69 between cylinder body and the cylinder body this moment.
Power cylinder of the present invention is divided into one-level, secondary, three grades, level Four power cylinder, wherein three grades of power cylinders have two kinds of structures, pressurized cylinder has two kinds of structures, reversal valve has two kinds of structures, can interconnect supporting use between the three, thereby constitute the dissimilar booster pump of different stage, concrete collocation mode is determined on a case-by-case basis.
The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of products under enlightenment of the present invention.For example the screen pack assembly is arranged on well head, is communicated with or the like with last end joint by pipeline then.Though but on its shape or structure, do any variation, every identical with the present invention or akin technical scheme is all within its protection domain.
Claims (15)
1, a kind of well bottom booster pump, it is characterized in that, comprise screen pack assembly (1), last end joint (2), housing (3), lower end fastening (8) and supporting dual channel drill bit (9), be provided with reversal valve (4 or 4 ') in the described housing (3) successively, control device for reversing (5), power cylinder (6) and pressurized cylinder (7), the lower end of screen pack assembly (1) is threaded with last end joint (2), the lower end of last end joint (2) is threaded with housing (3) and seals, lower end fastening (8) is threaded with housing (3) and seals, the left end of lower end fastening (8) withstands the right-hand member of pressurized cylinder (7), and be contained in locking member in the end joint (2) reversal valve (4 or 4 '), power cylinder (6) and pressurized cylinder (7) are crimped in the housing; Form the pump pressure mud sprue that directly leads to dual channel drill bit (9) giant between the outer rim of reversal valve (4 or 4 '), power cylinder (6) and pressurized cylinder (7) and the inner surface of housing (3); The spool of reversal valve (4 or 4 ') links to each other with control device for reversing (5), pump pressure mud moves back and forth by reversal valve (4 or 4 ') control power cylinder (6), and synchronous left lateral of drive pressurized cylinder (7) or right lateral, the left end of the right-hand member of power cylinder (6) and pressurized cylinder (7) is by a shared cylinder cap separation and sealing is arranged, the left end of power cylinder (6) links to each other with the right-hand member of reversal valve (4 or 4 ') and sealing is arranged, pressurized cylinder (7) has independently cylinder barrel and piston, its piston rod is connected with the power cylinder piston and on shared cylinder cap sealing is housed, pump pressure filtering slurry net (74) is arranged on the pressurized cylinder cylinder barrel, pump pressure mud leads to the pressurized cylinder inner chamber from pump pressure filtering slurry net (74), and the high pressure of pressurized cylinder is discharged by one way valve (73) and sprayed from high pressure nozzle.
2, well bottom booster pump according to claim 1, it is characterized in that, described control device for reversing (5) reaches the left limit pad (52), spring (53), right limit pad (54) and the locking nut (55) that are installed in its path part from left to right successively by hollow stem with the level (51) and forms, hollow stem (51) links to each other with the spool of reversal valve (4 or 4 '), its path partly penetrates in power cylinder piston and the hollow piston bar thereof, is provided with the left limit step and the right limit step that match with left limit pad (52) and right limit pad (54) respectively in the hole of hollow piston bar.
3, well bottom booster pump according to claim 2, it is characterized in that, described reversal valve (4) is made up of cartridge valve (42) and pilot valve (41), the left end of cartridge valve (42) laterally is equipped with taper valve core (423) and (424) side by side, both sides are provided with the discharge opeing one way valve (43) of two symmetries, when poppet valve core (423) and (424) unlatching, two discharge opeing one way valves (43) can replace respectively to the weary power fluid of well discharging by mud runner A and B; The valve body right-hand member of cartridge valve (42) vertically is equipped with poppet valve core (421) and (422) side by side, its spool lower end communicates with the sprue of pump pressure mud to the drill bit giant by screen pack (44), there are control mouthful " a ", " b " also to communicate with the upper end of poppet valve core (422) and (421) respectively on the right-hand member valve gap, communicate with valve body right-hand member control mouthful " a ", " b " again, be communicated with control mouth " a ", " b " on the left end valve gap by two apertures of valve body again, finally introduce the left chamber of poppet valve core (424) and (423);
Pilot valve (41) is the two-position four-way sliding valve structure, and valve body centre bore both sides are provided with mud runner A, B and communicate with mud runner A, B on the cartridge valve (42) respectively; This valve has slurry channel mouth " A ", slurry channel mouth " B ", pump pressure mud entrance " P " and weary mud scavenge port " O ", slurry channel mouth " A " wherein, " B " by two apertures on cartridge valve (42) valve body respectively with the right-hand member valve gap on control mouth " A ", " B " communicates, scavenge port " O " communicates with the discharge opeing one way valve by the aperture on cartridge valve (42) and the valve body, pump pressure mud entrance " P " communicates with pump pressure mud sprue by the screen pack (411) of pilot valve (41) side, respectively mud runner and control mouth is provided with sealing between cartridge valve (42) and pilot valve (41) the two valve ends;
The right-hand member external diameter of pilot valve (41) and power cylinder steel cylinder left end internal diameter are joined and are associated with two seals, the left end of a plurality of apertures communicates between two seals on the mud runner A of pilot valve (41) and the power cylinder steel cylinder wall, and mud runner B directly communicates with the left chamber of power cylinder; Pilot valve centre bore left end is equipped with the spool detent mechanism of being made up of spring, fairlead and steel ball successively, and the spool right-hand member links to each other with the hollow stem (51) of control device for reversing (5).
4, well bottom booster pump according to claim 2, it is characterized in that, described reversal valve (4 ') directly adopts the two-position four-way guiding valve, the left end internal diameter of cylinder of power cylinder (6) cooperates with the right-hand member external diameter of reversal valve (4 ') and two seals is housed, the left end of reversal valve (4 ') has local boss, and be provided with two seals between the inner walls, discharge opeing one way valve (43) is installed on it, position of Tu Chuing and shell inner surface do not form the pump pressure mud runner that leads to dual channel drill bit giant, reversal valve (4 ') has pump pressure mud entrance " P ", weary mud scavenge port " O " and two slurry channel mouths " A ", " B ", its mud runner A communicates between two seals with a plurality of apertures (601) of power cylinder (6) cylinder body left end, aperture (601) is connected with the right chamber of the piston of power cylinder (6) along equally distributed mud runner in the cylinder body, chamber, a piston left side directly is communicated with the mud runner B of reversal valve (4 '), weary mud scavenge port " O " is connected by the discharge opeing one way valve (43) of two symmetric arrangement of the spool inner duct and reversal valve (4 ') left side, and weary mud is by outside a plurality of aperture excavationg pumps on discharge opeing one way valve (43) and the housing (3); The left end of reversal valve (4 ') is provided with sleeve shaped filter (23 ') in the periphery of locking member, the two ends of this filter are provided with sealing respectively and between locking member and the reversal valve (4 '), pump pressure mud entrance " P " is directly introduced from being positioned at inner reversal valve (4 ') left end of filter (23 '), and the spool right-hand member of reversal valve (4 ') links to each other with the hollow stem (51) of control device for reversing (5).
5, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, described power cylinder (6) is three grades of power cylinders, three grades of shared cylinder bodies of power cylinder (60), or three grades of cylinders adopt independent cylinder body combination respectively, pass through intermediate hsg between cylinder body and the cylinder body, joint ring is connected with alignment pin, three pistons (61) are arranged in the cylinder body (60), (61 '), (61 ") and two intermediate hsgs (63); (63 '); piston rod (62) links to each other with piston (61 ') with pressure cap (66) by card key (65); (61 ") are by card key (65 ') for piston, the left end screw thread of pressurized cylinder piston bar (76) links to each other with piston rod (62), the piston gland (611) that the centre bore outer circumference is provided with a plurality of apertures (621) links to each other with piston (61) with screw or screw thread, the wall upper edge of piston rod (62) is axially arranged with a plurality of apertures (620), piston (61) left end directly communicates with the mud runner B of reversal valve, and communicate with the left chamber of piston (61 ') by a plurality of radial holes (622) on piston rod (62) wall, piston rod (62) right-hand member centre bore is provided with spacing support bar (67), the left side of spacing support bar (67) forms the right limit step (631) of control device for reversing, the left end external diameter of spacing support bar (67) cooperates with piston rod (62) internal diameter and seals, the annular space that the right-hand member centre bore of the external diameter of spacing support bar (67) and piston rod (62) forms from the mud of reversal valve mud runner B by a plurality of radial holes (623) on piston rod (62) the right-hand member wall introduce piston (the left chamber of 61 "); Three grades of cylinder diameter and pistons (61) that power cylinder is shared, (61 '), (between 61 ") external diameter movable sealing is arranged; two intermediate hsgs (63); (63 ') use wire loop (64); (64 ') are fixing; all there is sealing the both sides of wire loop; cylinder wall is provided with a plurality of axial aperture (605) also by a plurality of radial holes (602) on its wall, (603), (604) mud of self-commutation valve mud runner A is introduced piston (61) respectively in the future, (61 '), (the right chamber of 61 "); the external diameter of piston rod (62) and piston (61 '); (centre bore of 61 ") has static seal, with two intermediate hsgs (63), (63 ') centre bore has movable sealing, and the cylinder body outer rim has two or more grooves (111 or 111 ') and housing (3) internal diameter to form the mud sprue.
6, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, described power cylinder (6) is three grades of power cylinders, three grades of shared cylinder bodies of power cylinder (60), or three grades of cylinders adopt independent cylinder body combination respectively, pass through intermediate hsg between cylinder body and the cylinder body, joint ring is connected with alignment pin, three pistons (61) are arranged in the cylinder body (60), (61 '), (61 ") and two intermediate hsgs (63); (63 '); piston rod (62) links to each other with piston (61 ') with pressure cap (66) by card key (65); (61 ") are by card key (65 ') for piston, the left end screw thread of pressurized cylinder piston bar (76) links to each other with piston rod (62), the piston gland (611) that the centre bore outer circumference is provided with a plurality of apertures (621) links to each other with screw or screw thread with piston (61), a plurality of apertures (621) left end of piston gland (611) directly communicates with the mud runner B of reversal valve, and by a plurality of radial holes (622) on piston rod (62) wall, (623) introducing piston (61 ') respectively from the mud of reversal valve mud runner B, (the left chamber of 61 "); Piston rod (62) right-hand member centre bore is provided with spacing support bar (67), and the left side of spacing support bar (67) forms the right limit step (631) of control device for reversing, and the left end external diameter of spacing support bar (67) cooperates with piston rod (62) internal diameter and seals; In the cylinder body (60) of power cylinder (6) and piston (61), (61 '), (between the external diameter of 61 ") movable sealing is arranged; piston (61 '), (centre bore of 61 ") and piston rod (62) external diameter has static seal, intermediate hsg (63), (63 ') are fixed with cylinder body (60) with wire loop (64), (64 '), all there is sealing wire loop (64), (64 ') both sides, and intermediate hsg (63), (63 ') centre bore and piston rod (62) external diameter have movable sealing; Distribute on the wall of cylinder body (60) a plurality of apertures (605) and by a plurality of radial holes (602), (603), (604) mud of self-commutation valve mud runner A is introduced piston (61), (61 ') respectively in the future, (there is the mud sprue of two or more grooves (111 or 111 ') formation in the right chamber of 61 "), cylinder body outer rim.
7, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, described power cylinder (6) is the two-stage power cylinder, the shared cylinder body of two-stage power cylinder (60), or the two-stage cylinder adopts independent cylinder body combination respectively, pass through intermediate hsg between cylinder body and the cylinder body, joint ring is connected with alignment pin, two pistons (61) are arranged in the cylinder body (60), (61 ') and an intermediate hsg (63), piston (61 ') is by card key (65 '), the left end screw thread of pressurized cylinder piston bar (76) links to each other with piston rod (62), the piston gland (611) that the centre bore outer circumference is provided with a plurality of apertures (621) links to each other with screw or screw thread with piston (61), a plurality of apertures (621) left end of piston gland (611) directly communicates with the mud runner B of reversal valve, right-hand member by a plurality of apertures (622) the left chamber of introducing piston (61 ') respectively from the mud of reversal valve mud runner B; Between the external diameter of in the cylinder body (60) of power cylinder (6) and piston (61), (61 ') movable sealing is arranged, the centre bore of piston (61 ') and piston rod (62) external diameter have static seal, intermediate hsg (63) is fixing with wire loop (64), all there is sealing wire loop (64) both sides, and intermediate hsg (63) centre bore and piston rod (62) external diameter have movable sealing; Distribute on the wall of cylinder body (60) a plurality of apertures (605) and by a plurality of radial holes (602), (603) in the future the mud of self-commutation valve mud runner A introduce the right chamber of piston (61), (61 ') respectively, the cylinder body outer rim has the mud sprue of two or more grooves (111 or 111 ') formation.
8, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, described power cylinder is the one-level power cylinder, piston (61) links to each other with piston rod (62) by the left end screw thread of pressurized cylinder piston bar (76), in the cylinder body (60) of power cylinder (6) and between the external diameter of piston (61) movable sealing is arranged, the centre bore of piston (61) and piston rod (62) external diameter have static seal, the right chamber that distributes a plurality of apertures (605) on the wall of cylinder body (60) and introduce piston (61) respectively by the mud of a plurality of radial holes (602) self-commutation valve in future mud runner A, the mud sprue that the cylinder body outer rim has two or more grooves (111 or 111 ') to form.
9, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that described pressurized cylinder (7) comprises discharges one way valve (71), suction one way valve (72), antifouling one way valve (73), filter (74), piston (75), piston rod (76), supercharging cylinder barrel (77), left cylinder cap (78), right cylinder cap (79); The discharge opeing one way valve of being made up of spool, valve seat, spring and spring base (71) is positioned at piston (75) right-hand member center, can introduce the super-pressure mud in the right chamber of pressurized cylinder (7) by a plurality of apertures (751) on the piston rod (76) annular space in the left chamber of pressurized cylinder (7) during this opening of valves, and finally force antifouling one way valve (73) to be opened through the aperture of supercharging cylinder barrel (77) and right cylinder cap (79), again from the high pressure small nozzle ejection of drill bit; When sucking one way valve (72) unlatching, can be the right chamber of the sprue mud in pressurized cylinder external diameter and the housing (3) by the groove and the introducing pressurized cylinder of the runner on the right cylinder cap (79) (7) of filter (74), supercharging steel cylinder (73); Left side cylinder cap (78), right cylinder cap (79) is connected with supercharging steel cylinder (77) respectively with screw or screw thread and the internal diameter of supercharging steel cylinder (77) and high pressure draining hole end are sealed, and the left end of piston rod (76) links to each other with power cylinder piston rod (76).
10, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, described pressurized cylinder (7) comprises at least two discharge opeing one way valves (711), (711 ') and two suction one way valves (722), (722 '), antifouling one way valve (73), filter (74), piston (75), balancing pole (756), discharge one way valve (711), (711 ') and suction one way valve (722), (722 ') are by valve seat, spool, limit base, pressure cap is formed, when sucking one way valve (722), when open (722 '), from the mud of pump pressure mud sprue by filter (74), groove on the cylinder barrel (77), aperture and discharge opeing one way valve (722), (722 ') pressure cap lower end groove enters pressurized cylinder (7) left chamber ring casing and right chamber ring casing respectively; When discharge opeing one way valve (711), when open (711 '), two chamber high-pressure slurries can be discharged high-pressure slurry by the aperture (757) on pressure cap lower end groove and cylinder barrel (77) and the right end cap (79) respectively about pressurized cylinder (7); Balancing pole (756) center is provided with through hole and directly communicates with the weary mud scavenge port " o " of reversal valve (4 or 4 ').
11, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, flow guide pin bushing (413) is equipped with in the valve body inner bore interference of institute's two-position four-way guiding valve, its outside, the inboard has the multiple tracks groove respectively and by a plurality of apertures inside and outside groove is communicated with, the center has on the external diameter of spool (415) of through hole interference valve pocket (414) is housed, the a plurality of apertures in left end first road of valve pocket (414) are communicated with the weary mud scavenge port " O " of first road groove of the left end on the flow guide pin bushing (413) and two-position four-way guiding valve by spool (415) the left end first road groove and a plurality of aperture, the a plurality of apertures of twice are communicated with " B " of two-position four-way guiding valve with pump pressure mud entrance " P " mouth by spool (415) intermediate groove in the middle of the valve pocket (414), and valve pocket (414) right-hand member a plurality of apertures together is communicated with the slurry channel mouth " A " of two-position four-way guiding valve by spool (415) right-hand member groove with weary mud scavenge port " O ".
12, well bottom booster pump according to claim 2, it is characterized in that, described discharge opeing one way valve (43) is mainly by flat spring base (431), spool (432) and spring (433) constitute, the centre of flat spring base (431) is a cylinder, both sides are flat, one end of spring (433) is enclosed within on the cylinder of flat spring base, the other end is arranged in the recess at spool back, the conical surface of spool (432) is pressed on the weary mud scavenge port, overcoming spring force by weary mud pressure opens it, offer discharge opeing one way valve installing hole on the valve body, whole discharge opeing one way valve all is located in the installing hole, installing hole offers twice deep-slotted chip breaker (434) symmetrically on the inwall of its port both sides, discharge opeing one way valve (43) is put into installing hole and revolved and turn 90 degrees back flat of its both sides and snap in deep-slotted chip breaker (434) and locate.
13, well bottom booster pump according to claim 2, it is characterized in that, form pump pressure mud space between the inwall of described reversal valve (4 or 4 ') and housing (3), be distributed with two or more grooves (111 or 111 ') on the outer surface of cylinder block of power cylinder (6) along its length equably, and form pump pressure mud runner between the inwall of housing (3), form pump pressure mud space between the inwall of the cylinder barrel of pressurized cylinder (7) and housing (3), have pump pressure mud runner on the external cylindrical surface of its right-hand member cylinder cap, pump pressure mud is by the giant of the through dual channel drill bit of this runner.
14, according to claim 3 or 4 described well bottom booster pumps, it is characterized in that, described power cylinder (6) is the level Four power cylinder, the shared cylinder body of left end two-stage power cylinder (60) of power cylinder (6), the shared cylinder body of right-hand member two-stage power cylinder (61 '), or the level Four cylinder adopts independent cylinder body combination respectively, pass through intermediate hsg between cylinder body and the cylinder body, joint ring is connected with alignment pin, two pistons (61) are arranged in cylinder body (60), (61 ') and an intermediate hsg (63), two pistons (61 "); (61 " ') and an intermediate hsg (63 ') are arranged in cylinder body (60 '), piston rod (62) is by card key (65,65 ') and pressure cap (66,66 ') and piston (61 ', 61 ") link to each other; piston (61 " ') is by card key (65 "); the left end screw thread of pressurized cylinder piston bar (76) links to each other with piston rod (62); piston rod (62) and piston space have sealing, and piston rod and middle cylinder are stamped movable sealing; Intermediate hsg (63), (63 ') are fixed with wire loop (64), (64 ') with cylinder body (60), (60 ') respectively; Respectively be provided with two seals between intermediate hsg (63), (63 ') and cylinder body; Be provided with intermediate hsg (63A) between two power cylinder cylinder bodies (60) and (60 '), the boss of intermediate hsg (63A) or stand-alone card key are as the connection location of cylinder body (60), (60 '); In cylinder body (60), be provided with a joint ring (68) and an alignment pin (69) between (60 '), alignment pin (69) left end has screw thread, be screwed in the silk hole of cylinder body (60), locate in the respective aperture of alignment pin (69) right-hand member insertion cylinder body (60 '), the piston gland (611) that the centre bore outer circumference is provided with a plurality of apertures (621) links to each other with piston (61) with screw or screw thread, the wall upper edge of piston rod (62) is axially arranged with a plurality of apertures (620), piston (61) left end directly communicates with the mud runner B of reversal valve, and communicate with the left chamber of piston (61 ') by a plurality of radial holes (622) on piston rod (62) wall, piston rod (62) right-hand member centre bore is provided with spacing support bar (67), the left side of spacing support bar (67) forms the right limit step (631) of control device for reversing, the left end external diameter of spacing support bar (67) cooperates with piston rod (62) internal diameter and seals, the annular space that the right-hand member centre bore of the external diameter of spacing support bar (67) and piston rod (62) forms from the mud of reversal valve mud runner B by a plurality of radial holes (623 on piston rod (62) the right-hand member wall, 624) introduce the left chamber of piston (61 "; 61 " '); Cylinder wall is provided with a plurality of axial aperture (605) and by a plurality of radial holes on its wall (602,606,603, the 604) mud of the self-commutation valve mud runner A right chamber of introducing piston (61,61 ', 61 ", 61 " ') respectively in the future, the cylinder body outer rim has two or more grooves (111 or 111 ') and housing (3) internal diameter formation mud sprue.
15, a kind of well bottom booster pump boosting method, it is characterized in that, by drill string the power cylinder of introducing well bottom booster pump by reversal valve from the partial discharge of ground slush pump is used as power, the flow of shunting less than 1 liter/second from the slush pump total flow enters pressurized cylinder and is increased to super-pressure again, spray the waterpower cutting of finishing bottom rock from the small nozzle of dual channel drill bit, all the other most of flows directly spray from dual channel drill bit giant by the pump pressure mud sprue of the outer rim formation of booster pump housing and a plurality of parts, the shaft bottom landwaste of realization after to waterpower and drill bit Mechanical Crushing purifies and removes, and the mud of final and small nozzle ejection and collaborate to finish jointly from the weary power mud that power cylinder is discharged and take landwaste and return to ground.
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| CN2008102269445A CN101403279B (en) | 2008-11-21 | 2008-11-21 | Well bottom booster pump |
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| CN2008102269445A CN101403279B (en) | 2008-11-21 | 2008-11-21 | Well bottom booster pump |
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| CN101403279A true CN101403279A (en) | 2009-04-08 |
| CN101403279B CN101403279B (en) | 2012-05-30 |
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| CN102230484A (en) * | 2011-06-21 | 2011-11-02 | 同济大学 | Integrated continuous gas-driving hydraulic force booster |
| CN102364123A (en) * | 2011-11-01 | 2012-02-29 | 浙江大学 | Cartridge type two-position four-way water hydraulic reversing valve |
| WO2012042533A2 (en) * | 2010-09-29 | 2012-04-05 | Dattatraya Rajaram Shelke | Device for transferring energy between two fluids |
| CN102733756A (en) * | 2012-07-23 | 2012-10-17 | 中国石油大学(华东) | Vibration and pressure well drilling tool |
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