CN105239962A - Drilling-while-fracturing downhole hydraulic control device - Google Patents
Drilling-while-fracturing downhole hydraulic control device Download PDFInfo
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- CN105239962A CN105239962A CN201510593806.0A CN201510593806A CN105239962A CN 105239962 A CN105239962 A CN 105239962A CN 201510593806 A CN201510593806 A CN 201510593806A CN 105239962 A CN105239962 A CN 105239962A
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- urceolus
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Abstract
The invention mainly aims at providing a downhole device and discloses a drilling-while-fracturing downhole hydraulic control device. By utilizing the control device, the problem that a string needs to be replaced during drilling and fracturing currently can be solved, and drilling while fracturing can be realized. The drilling-while-fracturing downhole hydraulic control device is characterized by being composed of an upper portion of an outer barrel, a lower portion of the outer barrel, an inner barrel, a check valve closing member and a spring, teeth and clamping grooves are designed at each of the bottom of the upper portion of the outer barrel and the lower portion of the outer barrel, teeth which are matched are designed on the outer wall and the inner wall of the inner barrel, diversion holes are formed in the upper-portion end face, the check valve closing member is mounted in the middle of the end face of the inner barrel, the inner barrel and the spring are mounted in the outer barrel, and the upper portion of and the lower portion of the outer barrel are connected through a thread. The drilling-while-fracturing downhole hydraulic control device is connected with an expanding packer and a sand blower, and communication and plugging in a drill rod can be realized by controlling a liquid flowing direction so as to realize conversion between drilling and fracturing.
Description
Technical field
The present invention relates to a kind of underground equipment be applied in Oil-Gas Field Development Engineering field.
Background technology
Along with the consumption of the energy, the exploitation of unconventionaloil pool is more and more paid attention to.In unconventionaloil pool development process, multilateral well can be bored in order to improve output or implement fracturing after drilling well terminates.Although bore multilateral well can improve output, limited efficiency.In order to improve the development degree of oil gas further, fracturing can be implemented to Multilateral Wells, but technology is difficult to fracturing string to transfer in Multilateral Wells at present, therefore there is technical difficulty to Multilateral Wells pressure break.If adopt drilling well to terminate rear enforcement fracturing, after needing the drill string of down-hole all to propose, be replaced with fracturing string, but the process changing tubing string can consume a large amount of time and manpower and materials, has a strong impact on the efficiency of exploitation.If can carry out while drilling well pressure break just can solve Multilateral Wells cannot pressure break and change the problem that wastes time and energy of tubing string.
Summary of the invention
In order to solve the technical problem mentioned in background technology, the invention provides a kind of with boring with hydraulic control device under kill-job, this kind is simple with hydraulic control device structure under kill-job with brill, design ingenious, easy to removal and installation, connection in drilling rod and shutoff can be realized by controlling flow direction, and then realize the conversion of drilling well and pressure break.
Technical scheme of the present invention is: this kind with hydraulic control device under kill-job with brill, comprises urceolus top, urceolus bottom, inner core, ball-and-seat closure member and spring, it is characterized in that:
Urceolus top has internal cavities and has urceolus outlet, and described internal cavities and urceolus export and intersect at urceolus exit end face place; The inwall of described internal cavities has deep trouth and shallow slot, is outer tube inner wall tooth between deep trouth and shallow slot, and outer tube inner wall tooth has outer tube inner wall increment face, and outer tube inner wall increment face is smooth bevel; Be used for having internal thread with the described junction be connected with urceolus bottom in the bottom on described urceolus top;
Urceolus bottom is also hollow cylinder, inside the bottom of described urceolus bottom, there is urceolus lower teeth, form urceolus lower channel between the tooth wall of urceolus lower teeth and the inside wall of described urceolus bottom, the described groove width of urceolus lower channel and the width of spring match to realize the installation to described spring; Urceolus lower teeth has urceolus lower teeth end face, and urceolus lower teeth end face is smooth bevel; Be used for having external screw thread with the described junction be connected with urceolus top on the top of described urceolus bottom;
Inner core has the different hollow cavity of upper and lower two diameters, is separated, have several pod apertures around described ball-and-seat closure member installing hole between described upper and lower two hollow cavities by ball-and-seat closure member installing hole; The outer wall bottom of described inner core has inner tank theca tooth, inner tank theca tooth has inner tank theca increment face, and inner tank theca increment face is smooth bevel, and the inwall bottom of described inner core has inner core end-tooth, have inner core end-tooth end face, inner core end-tooth end face is smooth bevel; The upper hollow cavity of inner core has inner core exit end face;
Wherein, described inner tank theca tooth is meshed with outer tube inner wall tooth, thus makes at one end pressure effect to issue raw relative sliding between the end face in inner tank theca increment face and outer tube inner wall increment face, to realize the rotation of inner core in urceolus top; Described inner core end-tooth is meshed with urceolus lower teeth, thus makes at one end pressure effect to issue raw relative sliding between urceolus lower teeth end face and inner core end-tooth end face, to realize the rotation of inner core in urceolus bottom;
Described ball-and-seat closure member is made up of ball-and-seat lower surface and ball-and-seat upper surface and cylinder body rod; Wherein match with inner core exit end face in ball-and-seat lower surface, for setting this end face; Match with urceolus exit end face in ball-and-seat upper surface, for setting this end face;
Urceolus top, urceolus bottom, inner core, ball-and-seat closure member and spring connect in the following manner, ball-and-seat closure member is arranged on also can be freely movable wherein in the ball-and-seat closure member installing hole on inner core, inner tube installation is in urceolus top, inner tank theca tooth can enter in deep trouth or shallow slot, when inner tank theca tooth replaces between deep trouth and shallow slot, inner core can rotate, and springs sit is in urceolus lower channel; Urceolus top is closely connected by screw thread with urceolus bottom, the end face of inner core by spring-compressed in urceolus lower channel.
The present invention has following beneficial effect: this device, by being threaded on drilling rod, without the need to drilling rod large-scale redevelopment, in use only need connect sandblaster and inflatable packer on drilling rod, convenient and practical; This device can realize connection in drilling rod and shutoff by controlling flow direction, only needs the mobility status controlling liquid on ground just can make inner cylinder rotating in use, and then realizes the switch of valve.When valve is in opening, liquid can by pod apertures at drilling rod inner-outer circulation, can normally drilling well, and when valve is in closed condition, drilling rod inside is not communicated with, and can build the pressure in drilling rod and make packer setting, sandblaster is opened, and formation implements pressure break.Drilling well and pressure break combine by this device dexterously, this makes it possible to realize with brill with pressure, drilling fracturing adopts a casing string, solves the frequent problem changing tubing string and multilateral well pressure break, save the time of drilling equipment and fracturing unit resettlement, reduce the cost of exploitation oil gas.
Accompanying drawing illustrates:
Fig. 1 is three-dimensional structure schematic diagram of the present invention.
Fig. 2 is section of structure of the present invention.
Fig. 3 is the tomograph of inner core of the present invention.
Fig. 4 is the section of structure of inner core of the present invention.
Fig. 5 is the tomograph under another visual angle of Fig. 3.
Fig. 6 is the tomograph on urceolus top of the present invention.
Fig. 7 is the tomograph of ball-and-seat closure member of the present invention.
Fig. 8 is the tomograph of urceolus bottom of the present invention.
1-urceolus top in figure, 2-urceolus bottom, 3-inner core, 4-ball-and-seat closure member, 5-ball-and-seat upper surface, 6-spring, 7-inner tank theca tooth, 8-outer wall increment face, 9-urceolus exports, 10-urceolus exit end face, 11-deep trouth, 12-shallow slot, 13-pod apertures, 14-ball-and-seat closure member installing hole, 15-inner core end-tooth, 16-urceolus lower teeth, 17-urceolus lower channel, 18-inner core end-tooth end face, 19-inner core exit end face, 20-outer tube inner wall tooth, 21-ball-and-seat lower surface, 22-urceolus lower teeth end face, 23-outer tube inner wall increment face.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described:
Coordinate miscellaneous part during the work of this device, namely connect rear use together with drill string, sandblaster, packer.Urceolus top 1 is threaded connection on the drill string of nearly drill bit, urceolus top 1 is connected with urceolus bottom 2 by screw thread, urceolus bottom 2 is connected with sandblaster after being threaded connection one section of drill string, and the sandblaster other end connects packer, and the packer other end is connected on subaerial drill string.This device is connected on drill string by above-mentioned annexation.
As shown in Figure 1, this kind is with boring with hydraulic control device under kill-job, comprise: urceolus top 1, urceolus bottom 2, inner core 3, ball-and-seat closure member 4 and spring 6, its unique distinction is: as shown in Fig. 6 composition graphs 1, Fig. 2, described urceolus top 1 is hollow cylinder, urceolus top 1 has urceolus to export 9 and cavity, and both intersect at urceolus exit end face 10 place; The inwall of cavity has deep trouth 11 and shallow slot 12; Outer tube inner wall tooth 20 and outer tube inner wall increment face 23 is had between deep trouth 11 and shallow slot 12; There is screw thread urceolus top 1 and junction, urceolus bottom 2;
As shown in Fig. 8 composition graphs 1, Fig. 2, described urceolus bottom 2 is made up of urceolus lower teeth end face 22, urceolus lower channel 17 and cavity; Wherein urceolus lower channel mounting spring 6; There is screw thread urceolus bottom 2 and junction, urceolus top 1;
As Fig. 3,4,5 composition graphs 1, shown in Fig. 2, described inner core 3 is made up of upper and lower two hollow cylinders; There are several pod apertures 13 junction of hollow cylinder, and there is ball-and-seat closure member installing hole 14 centre; Inner tank theca has inner tank theca tooth 7; Inner core inwall has inner core end-tooth 15; Described inner tank theca tooth 7 is meshed with outer tube inner wall tooth 20, and because inner tank theca increment face 8 and outer tube inner wall increment face 23 are smooth bevel, under at one end pressure effect, relative slidings occur in two increment faces, thus realizes inner core 3 and rotate in urceolus top 1; Described inner core end-tooth 15 is meshed with urceolus lower teeth 16, and because inner core end-tooth end face 18 and urceolus lower teeth end face 22 are smooth bevel, under at one end pressure effect, relative slidings occur in two increment faces, thus realizes inner core 3 and rotate in urceolus bottom 2;
As shown in Fig. 7 composition graphs 1, Fig. 2, described ball-and-seat closure member 4 is made up of ball-and-seat lower surface 21 and ball-and-seat upper surface 5 and cylinder body rod; Wherein method ball-and-seat lower surface 21 sets inner core exit end face 19, and ball-and-seat upper surface 5 sets urceolus exit end face 10.
The annexation of above-mentioned each assembly is: ball-and-seat closure member 4 is arranged on also can be freely movable wherein in the ball-and-seat closure member installing hole 14 on inner core 3, inner core 3 is arranged in urceolus top 1, inner tank theca tooth 7 can enter deep trouth 11 or shallow slot 12, when inner tank theca tooth 7 replaces between deep trouth 11 and shallow slot 12, inner core 3 can rotate, spring 6 is placed in urceolus lower channel 17, because urceolus top 1 is closely connected by screw thread with urceolus bottom 2, spring 6 can be compressed in urceolus lower channel 17 by the end face of inner core 3, inner core end-tooth 15 and urceolus lower teeth 16 engage each other simultaneously.
This device forms a switch by liquid flow direction by-pass valve control.Inner tank theca tooth 7 is in shallow slot 12, and ball-and-seat upper surface 5 can not set urceolus exit end face 10, and liquid can pass through by forward; Liquid reverse flow, ball-and-seat lower end surface 21 sets inner core exit end face 19, and promote inner core and move, inner core end-tooth 15 contacts urceolus lower teeth 16, and inner core 3 rotates; Liquid forward flow, ball-and-seat closure member 4 is opened, and spring 6 promotes inner core 3 and moves, and inner tank theca tooth 7 contacts outer tube inner wall tooth 20 and enters deep trouth 11, and ball-and-seat upper surface 5 sets urceolus exit end face 10, liquid not by; Liquid reverse flow, ball-and-seat lower end surface 21 sets inner core exit end face 19, and promote inner core and move, inner core end-tooth 15 contacts urceolus lower teeth 16, and inner core 3 rotates; Liquid forward flow, ball-and-seat closure member 4 is opened, and spring 6 promotes inner core 3 and moves, and inner tank theca tooth 7 contacts outer tube inner wall tooth 20 and enters shallow slot 12, and ball-and-seat upper surface 5 can not set urceolus exit end face 10, and liquid can pass through.
When inner tank theca tooth is in shallow slot, drilling fluid normal through, drilling well is normally carried out; Direct circulation liquid after reacting cycle injection liquid, close with hydraulic control device central passage under kill-job with brill, pump into higher pressure packer setting, sandblaster is opened, and formation can carry out pressure break; Reacting cycle injects direct circulation liquid after liquid, opens with hydraulic control device central passage under kill-job with brill, and drilling fluid can normal circulation, normally creeps into.
The work process of this device is as follows:
Connect one section of drill string after drill bit and then connect this device, connect one section of drill string again after this device after, connect sandblaster and inflatable packer successively again.
In normal drilling process, inner tank theca tooth 7 is stuck in shallow slot 12, and liquid is by pod apertures 13 and push ball-and-seat closure member 4 open, and now ball-and-seat upper surface 5 does not set at urceolus exit end face 10 place, and liquid flows to drill bit by urceolus outlet 9, when needing target zone pressure break, ground reacting cycle injects liquid to the annular space of drill string and pit shaft, the pressure of liquid to act on ball-and-seat upper surface 5 and promotes ball-and-seat closure member 4 and moves until ball-and-seat closure member 4 sets on inner core exit end face 19, liquid cannot be back through, now fluid pressure just acts on inner core 3, and promote inner core 3 and move Compress Spring 6, until inner core end-tooth 15 and urceolus lower teeth 16 engage each other, inner core rotates, then ground direct circulation injects liquid in drill string, under the effect of liquid thrust and spring 6 elastic force, inner core 3 moves, until inner tank theca tooth 7 is meshed with outer tube inner wall tooth 20, inner core 3 rotates, inner tank theca tooth 7 is stuck in deep trouth 11, now ball-and-seat upper surface 5 sets urceolus exit end face 10 place, liquid is not by urceolus outlet 9, ground pump-in pressure, packer setting, pump into higher pressure sandblaster to open formation and carry out pressure break.Need can repeat aforesaid operations when continuing to creep into, make inner tank theca tooth 7 be in shallow slot 12, liquid flows to drill bit by urceolus outlet 9.
Claims (1)
1., with boring with a hydraulic control device under kill-job, comprising urceolus top (1), urceolus bottom (2), inner core (3), ball-and-seat closure member (4) and spring (6), it is characterized in that:
Urceolus top (1) has internal cavities and has urceolus outlet (9), and described internal cavities and urceolus export (9) and intersect at urceolus exit end face (10) place; The inwall of described internal cavities has deep trouth (11) and shallow slot (12), be outer tube inner wall tooth (20) between deep trouth (11) and shallow slot (12), outer tube inner wall tooth (20) has outer tube inner wall increment face (23), and outer tube inner wall increment face (23) is smooth bevel; Be used for having internal thread with the described junction be connected with urceolus bottom in the bottom on described urceolus top;
Urceolus bottom (2) is also hollow cylinder, there is inside the bottom of described urceolus bottom urceolus lower teeth (16), form urceolus lower channel (17) between the tooth wall of urceolus lower teeth (16) and the inside wall of described urceolus bottom, the groove width of described urceolus lower channel and the width of spring (6) match to realize the installation to described spring; Urceolus lower teeth (16) has urceolus lower teeth end face (22), and urceolus lower teeth end face (22) is smooth bevel; Be used for having external screw thread with the described junction be connected with urceolus top on the top of described urceolus bottom;
Inner core (3) has the different hollow cavity of upper and lower two diameters, is separated, have several pod apertures (13) around described ball-and-seat closure member installing hole between described upper and lower two hollow cavities by ball-and-seat closure member installing hole (14); The outer wall bottom of described inner core has inner tank theca tooth (7), inner tank theca tooth (7) has inner tank theca increment face (8), inner tank theca increment face (8) is smooth bevel, the inwall bottom of described inner core has inner core end-tooth (15), have inner core end-tooth end face (18), inner core end-tooth end face (18) is smooth bevel; The upper hollow cavity of inner core (3) has inner core exit end face (19);
Wherein, described inner tank theca tooth (7) is meshed with outer tube inner wall tooth (20), thus make at one end pressure effect to issue raw relative sliding between the end face in inner tank theca increment face (8) and outer tube inner wall increment face (23), to realize the rotation of inner core (3) in urceolus top (1); Described inner core end-tooth (15) is meshed with urceolus lower teeth (16), thus make at one end pressure effect to issue raw relative sliding between urceolus lower teeth end face (22) and inner core end-tooth end face (18), to realize the rotation of inner core (3) in urceolus bottom (2);
Described ball-and-seat closure member (4) is made up of ball-and-seat lower surface (21) and ball-and-seat upper surface (5) and cylinder body rod; Wherein ball-and-seat lower surface (21) match with inner core exit end face (19), for setting this end face; Match with urceolus exit end face (10) in ball-and-seat upper surface (5), for setting this end face;
Urceolus top (1), urceolus bottom (2), inner core (3), ball-and-seat closure member (4) and spring (6) connect in the following manner, ball-and-seat closure member (4) is arranged on also can be freely movable wherein in the ball-and-seat closure member installing hole (14) on inner core (3), inner core (3) is arranged in urceolus top (1), inner tank theca tooth (7) can enter in deep trouth (11) or shallow slot (12), when inner tank theca tooth (7) replaces between deep trouth (11) and shallow slot (12), inner core (3) can rotate, spring (6) is placed in urceolus lower channel (17), urceolus top (1) is closely connected by screw thread with urceolus bottom (2), and spring (6) is compressed in urceolus lower channel (17) by the end face of inner core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593806.0A CN105239962B (en) | 2015-09-17 | 2015-09-17 | With brill with hydraulic control device under kill-job |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510593806.0A CN105239962B (en) | 2015-09-17 | 2015-09-17 | With brill with hydraulic control device under kill-job |
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| CN105239962A true CN105239962A (en) | 2016-01-13 |
| CN105239962B CN105239962B (en) | 2017-07-14 |
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Cited By (1)
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| US9683424B2 (en) | 2015-02-06 | 2017-06-20 | Comitt Well Solutions Us Holding Inc. | Apparatus for injecting a fluid into a geological formation |
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| CN105239962B (en) | 2017-07-14 |
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