CN204113117U - Abrasive water-jet radial bore device - Google Patents
Abrasive water-jet radial bore device Download PDFInfo
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- CN204113117U CN204113117U CN201420569838.8U CN201420569838U CN204113117U CN 204113117 U CN204113117 U CN 204113117U CN 201420569838 U CN201420569838 U CN 201420569838U CN 204113117 U CN204113117 U CN 204113117U
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- abrasive water
- window
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Abstract
The utility model discloses a kind of abrasive water-jet radial bore device, comprise urceolus; Central tube, it can be located in described urceolus along the axis of described urceolus slidably, and described central tube has a forced section, moves along first direction to order about described central tube after being subject to hydraulic coupling; Can along with the window-opening mechanism of described central tube relative sliding, it has the jet member for windowing to sleeve pipe; Be fixedly connected on the steering mechanism on window-opening mechanism, its inside be provided with there is arrival end and the port of export turn to passage, described steering mechanism can be provided with the drilling part for holing to the rock completing the place of windowing; Resetting-mechanism, it moves along second direction for ordering about described central tube after the pressure release of described steering mechanism, and described first direction is opposite to the first direction; The reset distance of described resetting-mechanism turns to the distance between channel outlet identical with described jet member with described.Abrasive water-jet radial bore device described in the utility model, can complete the perforate of fine and close hard rock efficiently.
Description
Technical field
The utility model relates to a kind of boring bar tool of oil and gas exploitation, particularly a kind of abrasive water-jet radial bore device.
Background technology
Overwhelming majority Oil/gas Well, after completing production string well cementation, will carry out perforating job at oil gas interval, links up with the oil gas realized between stratum and pit shaft.
The perforating technology of current Oil/gas Well application, its perforation penetration is maximum, and at about one meter, perforating depth is low, can not be communicated with region of bypassed oil, thus can not realize increasing drainage radius, improves infiltration condition, increases the object of oil well output and raising reservoir recovery.
In order to increase the penetration depth of described perforation, conventional is that oil well diameter is to drilling technique at present.Described oil well diameter completes casing sidetracking, oil reservoir drilling operating to drilling technique successively particular by downhole tool, and object is in oil reservoir, form aperture long distance drain path, improves infiltration condition, increases oil well output and improve reservoir recovery.
For oil well diameter to drilling technique, Chinese patent manual CN102312655A proposes a kind of specific implementation.Described patent specification CN102312655A specifically discloses a kind of radial hydraulic jetting drilling technology.The method of described radial hydraulic jetting drilling technology introduction first utilizes cutter to carry out casing sidetracking operation at the oil reservoir position of needs construction.When carrying out described casing sidetracking operation, drive water motor to drive universal joint that cutter is rotated particular by water under high pressure and then cut that sleeve pipe carries out windowing gradually.Then trip out the instrument of casing sidetracking, then under enter boring bar tool and carry out drilling operating.During boring, produce high-pressure fluid by ground high-pressure pump, by the broken rock effect of high pressure jet flow, in the oil reservoir needing construction, eject that diameter reaches 40 millimeters to 50 millimeters, length reaches the directed slim-hole of 100 meters.
But described radial hydraulic jetting drilling technology also exists following problem:
First, in prior art, cutter when windowing, is adopted to window.When carrying out windowing operation with described cutter, driving water motor to drive universal joint to make cutter rotate and then cut sleeve pipe gradually by water under high pressure and windowing.There is longer flexible attachment components in above-mentioned tool combinations, when hole deviation gradient is greater than in crude oil situation higher containing viscosity in 10 ° or oil pipe, meets obstructions and easily bending occurs, such as under enter or trip out in well time meet card time, easily cause the accident.
Secondly, the instrument that described radial hydraulic jetting drilling technology is being implemented to window and during drilling operating, needs enter two covers different down respectively operates, for the oil well pipe of about 3000 meters, activity duration on cutting knife tool next time needed for tubing string is at least 9 hours, adding the uplifting window time at least needs 10 hours, therefore to there is operation time-consuming for described radial hydraulic jetting drilling technology, inefficient problem.
Described radial hydraulic jetting drilling technology is for the hard rock of densification in addition, cannot realize boring.
Utility model content
The purpose of this utility model is to provide a kind of abrasive water-jet radial bore device, can complete the perforate of fine and close hard rock efficiently.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
A kind of abrasive water-jet radial bore device, comprising: urceolus; Central tube, it can be located in described urceolus along the axis of described urceolus slidably, and described central tube has a forced section, moves along first direction to order about described central tube after being subject to hydraulic coupling; Can along with the window-opening mechanism of described central tube relative sliding, it has the jet member for windowing to sleeve pipe; Be fixedly connected on the steering mechanism on window-opening mechanism, its inside be provided with there is arrival end and the port of export turn to passage, described steering mechanism can be provided with the drilling part for holing to the rock completing the place of windowing; Resetting-mechanism, it moves along second direction for ordering about described central tube after the pressure release of described steering mechanism, and described first direction is opposite to the first direction; The reset distance of described resetting-mechanism turns to the distance between channel outlet identical with described jet member with described.
In a preferred embodiment, be formed with annular space between described central tube and described urceolus, described resetting-mechanism is arranged in described annular space, and one end of described resetting-mechanism contacts with the forced section of described central tube.
In a preferred embodiment, the middle part of described urceolus is formed with the limiting stand that the described central tube of restriction moves down distance, and described forced section is arranged on the upper end of described central tube, and the external diameter of described forced section is greater than the internal diameter of described limiting stand; Described window-opening mechanism upper end is fixedly connected with described central tube and is communicated with, and lower end is fixedly connected with described steering mechanism and is communicated with.
In a preferred embodiment, the top of described urceolus is formed for limiting the limiting stand described central tube moving distance, and the internal diameter of described limiting stand is less than the external diameter of described central tube upper end; Described forced section is arranged on the middle part of described central tube, is also provided with sealing shroud in the annular space of described bottom, is formed with fluid cylinder between described sealing shroud and described forced section, and the central tube that described fluid cylinder is corresponding is provided with central tube perforate; Described steering mechanism is arranged on the top of window-opening mechanism; Described steering mechanism, window-opening mechanism are provided with the bypass through hole be interconnected.
In a preferred embodiment, described window-opening mechanism inside is provided with axial passage, and the radial position be communicated with described axial passage is provided with radial hole, is arranged in described radial hole at described jet member.
In a preferred embodiment, after described window-opening mechanism is fixedly connected with described steering mechanism, form the through hole with internal run-through, the position be communicated with on described through hole or with described through hole is provided with plugging mechanism.
In a preferred embodiment, described jet member comprises the first housing and sprays impeller, is provided with the nozzle of windowing that can form convergent cone spray in one end of described first housing.
In a preferred embodiment, described window-opening mechanism outer wall offers the groove corresponding with described nozzle of windowing.
In a preferred embodiment, described drilling part comprises the second housing and boring impeller, and described second housing is provided with through reflection hole, and described reflection hole is acute angle from the angle in the direction that the second housing exterior walls flows to the through direction of inwall and abrasive water.
Feature of the present utility model and advantage are: enter kit under adopting abrasive water-jet radial bore device described in the utility model to pass through, complete window operation and drilling operating.When adopting abrasive water-jet radial bore device described in the utility model to carry out casing sidetracking, machine cuts sleeve-like manner is replaced by Casing-Cutting with Abrasive Water Jet mode, eliminate down water motor and cutter operation, save the time, used time has original 10 hours to reduce to 1 hour, and efficiency is improved greatly.In addition because described abrasive water-jet radial bore device does not have flexible attachment components, therefore can not there is bending and meet the accidents such as card, more reliable during use.
When adopting abrasive water-jet radial bore device described in the utility model to carry out oil reservoir boring, break rock mode with abrasive water-jet and replace pure water jets mode, improve rock breaking capacity and efficiency of breaking rock, such as pure water jets nozzle can not form effectively broken rock to dacite porphyry core under 70 MPas, adopt abrasive water-jet mode, under 6 MPas, just can realize brokenly rock.Thus, under uniform pressure and flow, abrasive water-jet boring has higher rock breaking capacity than pure water jets boring, can be applicable to buried hill oil reservoir boring.
Prior art adopts cutter to window in addition, is not that injection stream is windowed.Cutter needs to cut gradually.Nozzle of windowing described in the utility model is cone jet nozzles in addition, its port of export flare.When abrasive water is after described impeller, rotate, then after described nozzle ejection of windowing, form conical hollow jet, the effect expanding diameter of windowing can be played.Because the fluid ejected from described nozzle of windowing is conical hollow jet, the spacing of window nozzle and sleeve pipe is larger, and diameter of windowing is larger.Therefore by the distance of windowing between nozzle and sleeve pipe described in controlling, the size of the diameter that just can control to window.
Accompanying drawing explanation
Fig. 1 is a kind of abrasive water-jet radial bore apparatus structure schematic diagram in the utility model first embodiment;
Fig. 2 be in the utility model first embodiment in a kind of abrasive water-jet radial bore device tubing string urceolus partly cut open figure;
Fig. 3 be in the utility model first embodiment a kind of abrasive water-jet radial bore device window-opening mechanism partly cut open figure;
Fig. 4 be in the utility model first embodiment in a kind of abrasive water-jet radial bore device window-opening mechanism jet member partly cut open figure;
Fig. 5 is the right view of window-opening mechanism jet member in a kind of abrasive water-jet radial bore device in the utility model first embodiment;
Fig. 6 be in the utility model first embodiment in a kind of abrasive water-jet radial bore device steering mechanism's drilling part partly cut open figure;
Fig. 7 is the A-A sectional view of steering mechanism's drilling part in a kind of abrasive water-jet radial bore device in the utility model first embodiment;
Fig. 8 is that in the utility model first embodiment, a kind of abrasive water-jet radial bore device is windowed view;
Fig. 9 is a kind of abrasive water-jet radial bore apparatus structure schematic diagram in the utility model second embodiment;
Figure 10 is the B-B sectional view of perforation system in a kind of abrasive water-jet radial bore device in the utility model second embodiment;
Figure 11 is that in the utility model second embodiment, a kind of abrasive water-jet radial bore device is windowed view.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen in the application's claims limited range.
The utility model provides a kind of abrasive water-jet radial bore device, can complete the perforate of fine and close hard rock efficiently.
Referring to Fig. 1, is abrasive water-jet radial bore apparatus structure schematic diagram a kind of in the utility model first embodiment.Described abrasive water-jet radial bore device comprises: tubing string 1, perforation system.Described perforation system comprises window-opening mechanism 2 and steering mechanism 3.
Wherein said tubing string 1 comprises: the first joint 11, urceolus 12, central tube 13, resetting-mechanism 14.
Described first joint 11 1 aspect is used for whole abrasive water-jet radial bore device to be connected with the oil pipe on top; Be used on the other hand playing position-limiting action to the upper end of described central tube 13.Described first joint 11 can be the joint of variable diameters, and the external diameter of upper end can be identical with the external diameter of described urceolus 12, and the external diameter of its lower end and the internal diameter of described urceolus 12 match, and are connected by the mode be fixedly connected with in cooperation place, such as, can be threaded.The internal diameter of described first joint 11 is greater than the internal diameter of described central tube 13, thus the upper end that can realize described central tube 13 is stuck in the lower end of described first joint 11, and limited.
Refer to Fig. 2, partly cut open figure for tubing string urceolus in abrasive water-jet radial bore device a kind of in the utility model first embodiment.Described resetting-mechanism 14, for coordinating with central tube 13, is limited in the annular space between central tube 13 and urceolus 12 by described urceolus 12.Described urceolus 12 has the cylindrical shell 121 of hollow, is formed with the urceolus through hole 120 of variable cross-section in described cylindrical shell 121.Described urceolus through hole 120 comprises that aperture successively decreases successively: hole section 122, urceolus mesopore section 124, urceolus lower opening section 126 on urceolus.The end face that hole section 122 and urceolus mesopore section 124 are had a common boundary on described urceolus is formed with first step 123.The end face had a common boundary in described urceolus mesopore section 124 and urceolus lower opening section 126 is formed with second step 125.For when described central tube 13 moves down under hydraulic action, described first step 123 is for carrying out spacing to described central tube 13.The corresponding cylindrical shell of described urceolus mesopore section 124 is provided with urceolus perforate 127, with ensure abrasive water-jet radial bore device under enter internal and external pressure balance in the process of oil well, resetting-mechanism 14 is in the flexible state of nature.Described second step 125 is for limiting the lower surface of described central tube 13.
Described central tube 13 comprises the body 130 of a hollow, and the upper end of described body 130 is provided with the forced section be communicated with described body 130.Described forced section can be the projection 131 be arranged on described central tube 13.The described central tube 13 being provided with protruding 131 with between described urceolus 12 for be slidably connected, and seal can be set on described protruding 131, to ensure the opposing seal between described protruding 131 and described urceolus 12.The described external diameter of protruding 131 is less than the aperture of described urceolus mesopore section 124, when moving down under hydraulic action to make described central tube 13, can be stuck in described first step 123 place.The axial distance at described protruding 131 lower surfaces to described first step 123 place is L1.The internal diameter of the projection 131 of described central tube 13 is less than the internal diameter of described first joint 11, when injecting hydraulic pressure to described abrasive water-jet radial bore device, at hydraulic action in the described upper surface of protruding 131, thus central tube 13 and resetting-mechanism 14 can be driven to move down, described in the distance that moves down be L1.Described urceolus 12 is stretched out in the lower end of described central tube 13, is fixedly connected with described perforation system.
Described resetting-mechanism 14 is arranged in the annular space between described central tube 13 and described urceolus 12.One end of described resetting-mechanism 14 can offset with the lower surface of the projection 131 of described central tube 13, and the other end can offset with the second step 125 of described urceolus 12.Described resetting-mechanism 14 can for the coil type spring extended along the longitudinal.
Refer to Fig. 3, partly cut open figure for abrasive water-jet radial bore device window-opening mechanism a kind of in the utility model first embodiment.Described window-opening mechanism 2 is for operation of windowing to sleeve pipe, and it has the cylinder 20 of hollow, and described cavity is the second through hole 21.Described second through hole 21 comprise that aperture successively decreases successively second on hole section 211, second mesopore section 212, second lower opening section 213.On described second, hole section 211 is for coordinating with the lower end of described central tube 13 body 130 and be fixedly connected with.The described mode be fixedly connected with can for the mode such as being threaded.On described second, hole section 211 contacts with the lower surface of described central tube 13 with the transition end face of the second mesopore section 212.The radial position be communicated with described second mesopore section 212 is provided with radial hole 24.Described radial hole 24 is for arranging jet member 4.Described second mesopore section 212 is formed with valve ball seat, for setting the valve ball of input with the transition end face of described second lower opening section 213.The lower end of described window-opening mechanism 2 is fixedly connected with described steering mechanism 3.
Refer to Fig. 4 and Fig. 5, the core component of described jet member 4 for windowing, it comprises the first housing 40 and sprays impeller 41.Be formed with a through cavity in described first housing 40, described injection impeller 41 is fixed in described cavity.Blade 410 quantity of described injection impeller 41 is at least one, and the setting direction along described radial hole 24 extends spirally.When the number of described blade 410 is multiple, be such as 3 to 6, multiple blade 410 can circumferentially be evenly arranged.At described first housing 40, one end of described second mesopore section 212 is provided with nozzle 403 of windowing.The described nozzle 403 of windowing for cone jet nozzles, described in window the port of export 404 flare of nozzle 403.When abrasive water is after described injection impeller 41, rotate, then spray rear formation conical hollow jet from described nozzle 403 of windowing, the effect expanding diameter of windowing can be played.Because the fluid ejected from described nozzle 403 of windowing is conical hollow jet, nozzle 403 of windowing is larger with the spacing of sleeve pipe, and diameter of windowing is larger.Therefore by the distance of windowing between nozzle 403 and sleeve pipe described in controlling, the size of the diameter that just can control to window.Also be formed with the tubaeform changeover portion 402 of decreasing pore size between the port of export of described injection impeller 41 and the arrival end of described nozzle 403 of windowing, its fluid flowing through described changeover portion 402 has the effect of speedup.
On cylinder 20 outer wall corresponding with described radial hole 24, be inwardly provided with groove 25, the shape of described groove 25 can be circular or rectangle or other shapes.Make to leave certain distance between nozzle 403 and sleeve pipe to be windowed by arranging described groove 25, for the size of the diameter that controls to window.
Described steering mechanism 3, for by abrasive water by axially changing radial direction into, to carry out radial perforation.The upper end of described steering mechanism 3 is fixedly connected with described window-opening mechanism 2, and is interconnected.The described mode be fixedly connected with is for the mode such as being threaded.Described steering mechanism 3 inside bendingly smoothly radial turns to passage 30 by being axially converted to containing one.Can high-pressure hose be provided with at the described passage 30 that turns to, and the drilling part 5 be fixedly connected with the described high-pressure hose port of export, described drilling part 5 is for broken rock perforation.The described external diameter turning to the aperture of passage 30 to be greater than described high-pressure hose, ensures that high-pressure hose can move freely therein.The described aperture of passage 30 that turns to specifically can be 30 millimeter.Described steering mechanism 3 turns to the port of export of passage 30 to be L2 to the distance of the radial hole 24 of described window-opening mechanism 2, and described L2 is equal with the displacement L1 of described central tube 13.
The structure of described drilling part 5 refers to Fig. 6 to Fig. 7, and the structure of described drilling part 5 is similar to the structure of described jet member 4, and it comprises the second housing 50 and boring impeller 51.Its difference is: described drilling part 5 is also provided with at least one through reflection hole 501 on its second housing 50.Angle folded by the direction that described reflection hole 501 flows from the second housing 50 outer wall to the through direction of inwall and abrasive water is acute angle.The position of described reflection hole 501 is positioned at the position of impeller near steering mechanism 3 center.The number of described reflection hole 501 can be multiple, such as, can be 3 to 6, and described multiple reflection hole 501 can be evenly arranged along the circumferencial direction of drilling part 5.When abrasive water flows through described drilling part 5, a part of fluid sprays from its nozzle through the boring impeller 51 of drilling part 5, and another part fluid is without impeller, ejects backward.The described fluid ejected backward can produce recoil strength, thus provides advance tractive force for the fluid sprayed from nozzle, and then can improve the power of perforation, has been conducive to the perforate of fine and close hard rock.In a preferred embodiment, the angle of described acute angle is 30 to 60 degree, is beneficial to provide the tractive force providing advance from the fluid of nozzle ejection better.
Abrasive water-jet radial bore device described in the utility model in use, refer to Fig. 8, first carry out casing sidetracking, in well mouth oil pipe, drop into valve ball 6, on the valve ball seat that the transition end face that described valve ball 6 drops on described second mesopore section 212 and described second lower opening section 213 is formed.Then abrasive water is pumped into well mouth oil pipe, drive the projection 131 of described central tube 13 descending, and then compression resetting-mechanism 14, described central tube 13 drives the window-opening mechanism 2 that is fixedly connected with it and steering mechanism 3 to move down in the process moved down, stop mobile when the projection 131 of described central tube 13 snaps on first step 123, the distance of its movement is L1.After casing sidetracking, termination of pumping, oil pipe internal and external pressure balance, pressure differential collapses, resetting-mechanism 14 resets, and drives in described central tube 13, window-opening mechanism 2 and steering mechanism 3 and moves.Because described steering mechanism 3 turns to the port of export of passage 30 to be that L2 drives the distance L1 of window-opening mechanism 2 and steering mechanism 3 movement equal with described central tube 13 to the distance of radial hole 24 of described window-opening mechanism 2, described steering mechanism 3 opening can be overlapped with window-opening mechanism 2 aperture position.Then carry out anti-flushing well operation, described valve ball 6 is flushed to ground, ensure boring work channels open, be beneficial to carry out oil reservoir drilling operating.Drilling part 5 is entered under now in described abrasive water-jet radial bore device.Described drilling part 5 by connect high-pressure hose again joint steel pipe be connected with the pump of the abrasive water on ground.And then the high pressure abrasive water pumped in pump can by with the described steel pipe, high-pressure hose, the drilling part 5 that are connected successively, from window position injection, carry out radial aperture.
Referring to Fig. 9, is abrasive water-jet radial bore apparatus structure schematic diagram a kind of in the utility model second embodiment.Described abrasive water-jet radial bore device comprises: tubing string 1 and perforation system.Described perforation system comprises window-opening mechanism 2 and steering mechanism 3.
Wherein said tubing string 1 comprises: urceolus 12, central tube 13, resetting-mechanism 14, sealing shroud 15, plug 16.
Described resetting-mechanism 14, for coordinating with central tube 13, is limited in the annular space between central tube 13 and urceolus 12 by described urceolus 12.Described urceolus 12 has the cylindrical shell 121 of hollow, is formed with the third through-hole of variable cross-section in described cylindrical shell 121.Described third through-hole comprises: hole section 121a, the 3rd mesopore section 121b, the 3rd lower opening section 121c on the 3rd.On described 3rd hole section 121a hole wall on can be provided with internal thread, for being connected with the oil pipe on top.The hole wall of described 3rd lower opening section 121c also can arrange internal thread, for being fixedly connected with described plug 16.On described 3rd mesopore section 121b, on the described 3rd, the position of hole section 121a is provided with limiting stand 120.The maximum displacement that described limiting stand 120 moves up for limiting described central tube 13.Under the nature of described central tube 13 when not being stressed, its upper surface is H1 apart from the distance of described limiting stand 120.The aperture of described 3rd lower opening section 121c is greater than the aperture of described 3rd mesopore section 121b, is formed with annular space for arranging described resetting-mechanism 14 between described 3rd lower opening section 121c and described central tube 13.
Described central tube 13 comprises the body 130 of a hollow, and described body 130 is provided with the forced section be communicated with described body 130.Described forced section can be the projection 131 formed on described central tube 13.Described protruding 131 middle parts that can be arranged on described body 130, and can be able to be formed in one with described body 130, also can be the fixed forms such as welding.The described central tube 13 being provided with protruding 131 with between described urceolus 12 for be slidably connected, and seal can be set on the described outer wall of protruding 131, to ensure the opposing seal between described protruding 131 and described urceolus 12.The external diameter of described central tube 13 upper end is greater than the minimum diameter of described limiting stand 120, when moving up under hydraulic action to make described central tube 13, can be stuck in described limiting stand 120 place.When described resetting-mechanism 14 is under nature non-compressed state, the upper surface of described central tube 13 is H1 apart from the distance of described limiting stand 120, that is when injection abrasive water, after resetting-mechanism 14 is compressed, described central tube 13 can drive the distance that window-opening mechanism 2 and steering mechanism 3 move to be H1.Described urceolus 12 is stretched out in the lower end of described central tube 13, is fixedly connected with described perforation system.The body 130 of described central tube 13 is provided with central tube perforate 132.Described central tube perforate 132 is arranged on the described bottom of protruding 131.
Described resetting-mechanism 14 is arranged in the annular space between described central tube 13 and described urceolus 12.Described resetting-mechanism 14 can for the coil type spring extended along the longitudinal.
Described sealing shroud 15 can be circular sleeve structure, and the surfaces externally and internally of described sealing shroud 15 all can arrange seal, for sealing the annular space between described urceolus 12 and central tube 13.Described sealing shroud 15 is arranged on the bottom of the projection 131 of described central tube 13, and the outer wall of its upper surface and the described lower surface of protruding 131 and described urceolus 12, central tube 13 forms fluid cylinder 17, and described central tube perforate 132 is communicated with described fluid cylinder 17.
Described plug 16 is for supporting described sealing shroud 15.Described plug 16 can be circular tube structure.Described plug 16 upper surface contacts with the lower surface of described sealing shroud 15.Described plug 16 outer wall and described urceolus 12 are fixed.Described fixing mode can for being threaded.Described plug 16 inwall coordinates with described central tube 13, and described matching relationship can be matched in clearance.The lower end external diameter of described plug 16 can be identical with the external diameter of described urceolus 12, thus be coated on the lower end of described urceolus 12.
Referring to Figure 10, is a kind of in the utility model second embodiment B-B sectional view of perforation system of abrasive water-jet radial bore device.Wherein, described steering mechanism 3 for by abrasive water by axially changing radial direction into, to carry out radial perforation.The upper end of described steering mechanism 3 is connected with described central tube 13 by arranging joint 8, and its lower end is fixedly connected with described window-opening mechanism 2, and is interconnected.The described mode be fixedly connected with is for the mode such as being threaded.Described steering mechanism 3 inside bendingly smoothly radial turns to passage 30 by being axially converted to containing one.Can high-pressure hose be provided with at the described passage 30 that turns to, and the drilling part be fixedly connected with the described high-pressure hose port of export, described drilling part is used for broken rock perforation.A kind of identical of the shape of described drilling part 5 and structure and embodiment.The described external diameter turning to the aperture of passage 30 to be greater than described high-pressure hose, ensures that high-pressure hose can move freely therein.The described aperture of passage 30 that turns to specifically can be 30 millimeter.Described steering mechanism 3 is also provided with the first bypass through hole 31, and described first bypass through hole 31 is not connected with the described passage 30 that turns to.The number of described first bypass through hole 31 can be more than one, such as, when being two, turns to the both sides of passage 30 described in can being distributed in.Described steering mechanism 3 turns to the port of export 301 of passage 30 to be H2 to the distance of the radial hole 24 of described window-opening mechanism 2, and described H2 is equal with the displacement of described central tube 13.
Refer to Figure 10, described window-opening mechanism 2 is for operation of windowing to sleeve pipe.The upper end of described window-opening mechanism 2 is fixedly connected with described steering mechanism 3 and is communicated with, and its lower end is closed by arranging seal 7.Described seal 7 can be ball-and-seat, also can be other modes such as plug.Described window-opening mechanism 2 has cylinder 20, and cylinder 20 is provided with transitional pore 21.The radial position be communicated with described transitional pore 21 is provided with radial hole 24.Described radial hole 24 is for arranging jet member 4.Identical with embodiment one of the shape of described jet member 4 and structure.Described window-opening mechanism 2 is also provided with the second bypass through hole 22.Described second bypass through hole 22 is connected with described first bypass through hole 31.
Described joint 8 one end is fixedly connected with the lower end of described central tube 13, and the other end is fixedly connected with described steering mechanism 3.The inside of described joint 8 has a tab through-hole 81, and described tab through-hole 81 can be positioned at the middle part of described joint 8.Described tab through-hole 81 can be formed with reducing, described reducing for the formation of valve ball seat 810, for supporting the valve ball 6 set.Described joint 8 is also provided with the 3rd bypass through hole 82.The upper end of described 3rd bypass through hole 82 is communicated with the upper end of described valve ball seat 810.When dropping into valve ball 6 in described valve ball seat 810, the abrasive water flowing into central tube 13 can flow out from described 3rd bypass through hole 82.The lower end of described 3rd bypass through hole 82 is communicated with when aliging with the first bypass through hole 31 of described steering mechanism 3, is not communicated with when staggering.When described abrasive water-jet radial bore device carries out windowing operation, described in the first bypass through hole 31, the second bypass through hole 22, the 3rd bypass through hole 82 that are interconnected abrasive water is poured in described window-opening mechanism 2 and windows.
Abrasive water-jet radial bore device described in the utility model in use, refers to Figure 11, first carries out casing sidetracking, drop into valve ball 6 in well mouth oil pipe, and described valve ball 6 drops on described valve ball seat 810.Staggered in the lower end of described 3rd bypass through hole 82 and the first bypass through hole 31 of described steering mechanism 3, make it remain on not connected state.Now pump into abrasive water to well mouth oil pipe, described abrasive water is entered in the fluid cylinder 17 between described protruding 131 and sealing shroud 15 by central tube perforate 132.Under the effect of hydraulic coupling, drive the projection 131 of described central tube 13 up, and then compression resetting-mechanism 14, described central tube 13 drives the window-opening mechanism 2 that is fixedly connected with it and steering mechanism 3 to move up in upper process of moving.Stop mobile when the projection 131 of described central tube 13 snaps on limiting stand 120, the distance of its movement is H1.Is alignd with the first bypass through hole 31 of described steering mechanism 3 in the lower end of described 3rd bypass through hole 82 again, make it remain on connected state, now abrasive water pass through described in the first bypass through hole 31, the second bypass through hole 22, the 3rd bypass through hole 82 that are interconnected abrasive water is poured in described window-opening mechanism 2 and windows.After casing sidetracking, termination of pumping, oil pipe internal and external pressure balance, pressure differential collapses, under the effect of resetting-mechanism 14 elastic-restoring force and gravity, described resetting-mechanism 14, central tube 13, window-opening mechanism 2 and steering mechanism 3 move down reset.Because described steering mechanism 3 turns to the port of export of passage 30 to be that H2 drives the distance H1 of window-opening mechanism 2 and steering mechanism 3 movement equal with described central tube 13 to the distance of radial hole 24 of described window-opening mechanism 2, described steering mechanism 3 opening can be overlapped with window-opening mechanism 2 aperture position.Then carry out anti-flushing well operation, described valve ball 6 is flushed to ground, ensure boring work channels open, be beneficial to carry out oil reservoir drilling operating.Drilling part 5 is entered under now in described abrasive water-jet radial bore device.Described drilling part 5 by connect high-pressure hose again joint steel pipe be connected with the pump of the abrasive water on ground.And then the high pressure abrasive water pumped in pump can by with the described steel pipe, high-pressure hose, the drilling part 5 that are connected successively, from window position injection, carry out radial aperture.
The mode that described central tube 13 moves up, because the distance between described steering mechanism 3 port of export and window-opening mechanism 2 radial hole is shorter, is conducive to shortening resetting-mechanism 14 length; Can be implemented in addition tubing string 1 do not occur compression movement when, larger load can bear in steering mechanism 3.
Abrasive water-jet radial bore device described in the utility model is when carrying out windowing operation, and working media is volumetric concentration 5%-20%, 40 order to 100 object abrasive waters; When carrying out drilling operating, working media is volumetric concentration 5%-15%, 100 order to 180 object abrasive waters.Containing sand particle size in described abrasive water, determine according to nozzle diameter, nonchoking nozzle is principle.Described abrasive water has stronger broken rock effect, and being conducive to for getting out diameter in the hard lithostratigraphy of densification is 20 millimeters to 50 millimeters, the radial oil leak hole that length is greater than 50 meters.
Enter kit under adopting abrasive water-jet radial bore device described in the utility model to pass through, complete window operation and drilling operating.When adopting abrasive water-jet radial bore device described in the utility model to carry out casing sidetracking, machine cuts sleeve-like manner is replaced by Casing-Cutting with Abrasive Water Jet mode, eliminate down water motor and cutter operation, save the time, used time has original 10 hours to reduce to 1 hour, and efficiency is improved greatly.In addition because described abrasive water-jet radial bore device does not have flexible attachment components, therefore can not there is bending and meet the accidents such as card, more reliable during use.
When adopting abrasive water-jet radial bore device described in the utility model to carry out oil reservoir boring, break rock mode with abrasive water-jet and replace pure water jets mode, improve rock breaking capacity and efficiency of breaking rock, such as pure water jets nozzle can not form effectively broken rock to dacite porphyry core under 70 MPas, adopt abrasive water-jet mode, under 6 MPas, just can realize brokenly rock.Thus, under uniform pressure and flow, abrasive water-jet boring has higher rock breaking capacity than pure water jets boring, can be applicable to buried hill oil reservoir boring.
Prior art adopts cutter to window in addition, is not that injection stream is windowed.Cutter needs to cut gradually.Nozzle 403 of windowing described in the utility model is for cone jet nozzles in addition, its port of export 404 flare.When abrasive water is after described injection impeller 41, rotate, then spray rear formation conical hollow jet from described nozzle 403 of windowing, the effect expanding diameter of windowing can be played.Because the fluid ejected from described nozzle 403 of windowing is conical hollow jet, nozzle 403 of windowing is larger with the spacing of sleeve pipe, and diameter of windowing is larger.Therefore by the distance of windowing between nozzle 403 and sleeve pipe described in controlling, the size of the diameter that just can control to window.And the cutting of existing common jet adopts is cone straight nozzle, there is not scattering in fluid, cannot the hole of disposable formation certain diameter.
The foregoing is only several embodiment of the present utility model, although the embodiment disclosed by the utility model as above, the embodiment that described content just adopts for the ease of understanding the utility model, is not intended to limit the utility model.Any the utility model person of ordinary skill in the field; under the prerequisite not departing from the spirit and scope disclosed by the utility model; any amendment and change can be done on the formal of embodiment and details; but scope of patent protection of the present utility model, the scope that still must define with appended claims is as the criterion.
Claims (9)
1. an abrasive water-jet radial bore device, is characterized in that, comprising:
Urceolus;
Central tube, it can be located in described urceolus along the axis of described urceolus slidably, and described central tube has a forced section, moves along first direction to order about described central tube after being subject to hydraulic coupling;
Can along with the window-opening mechanism of described central tube relative sliding, it has the jet member for windowing to sleeve pipe;
Be fixedly connected on the steering mechanism on window-opening mechanism, its inside be provided with there is arrival end and the port of export turn to passage, described steering mechanism can be provided with the drilling part for holing to the rock completing the place of windowing;
Resetting-mechanism, it moves along second direction for ordering about described central tube after the pressure release of described steering mechanism, and described first direction is opposite to the first direction;
The reset distance of described resetting-mechanism turns to the distance between channel outlet identical with described jet member with described.
2. abrasive water-jet radial bore device as claimed in claim 1, it is characterized in that: between described central tube and described urceolus, be formed with annular space, described resetting-mechanism is arranged in described annular space, and one end of described resetting-mechanism contacts with the forced section of described central tube.
3. abrasive water-jet radial bore device as claimed in claim 1 or 2, it is characterized in that: the middle part of described urceolus is formed with the limiting stand that the described central tube of restriction moves down distance, described forced section is arranged on the upper end of described central tube, and the external diameter of described forced section is greater than the internal diameter of described limiting stand; Described window-opening mechanism upper end is fixedly connected with described central tube and is communicated with, and lower end is fixedly connected with described steering mechanism and is communicated with.
4. abrasive water-jet radial bore device as claimed in claim 1 or 2, is characterized in that: the top of described urceolus is formed for limiting the limiting stand described central tube moving distance, and the internal diameter of described limiting stand is less than the external diameter of described central tube upper end; Described forced section is arranged on the middle part of described central tube, is also provided with sealing shroud in the annular space of described bottom, is formed with fluid cylinder between described sealing shroud and described forced section, and the central tube that described fluid cylinder is corresponding is provided with central tube perforate; Described steering mechanism is arranged on the top of window-opening mechanism; Described steering mechanism, window-opening mechanism are provided with the bypass through hole be interconnected.
5. abrasive water-jet radial bore device as claimed in claim 1, is characterized in that: described window-opening mechanism inside is provided with axial passage, and the radial position be communicated with described axial passage is provided with radial hole, is arranged in described radial hole at described jet member.
6. abrasive water-jet radial bore device as claimed in claim 1, it is characterized in that: after described window-opening mechanism is fixedly connected with described steering mechanism, form the through hole with internal run-through, the position be communicated with on described through hole or with described through hole is provided with plugging mechanism.
7. abrasive water-jet radial bore device as claimed in claim 1, is characterized in that: described jet member comprises the first housing and sprays impeller, is provided with the nozzle of windowing that can form convergent cone spray in one end of described first housing.
8. abrasive water-jet radial bore device as claimed in claim 7, is characterized in that: described window-opening mechanism outer wall offers the groove corresponding with described nozzle of windowing.
9. abrasive water-jet radial bore device as claimed in claim 1, it is characterized in that: described drilling part comprises the second housing and boring impeller, described second housing is provided with through reflection hole, and described reflection hole is acute angle from the angle in the direction that the second housing exterior walls flows to the through direction of inwall and abrasive water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569838.8U CN204113117U (en) | 2014-09-29 | 2014-09-29 | Abrasive water-jet radial bore device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569838.8U CN204113117U (en) | 2014-09-29 | 2014-09-29 | Abrasive water-jet radial bore device |
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| Publication Number | Publication Date |
|---|---|
| CN204113117U true CN204113117U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420569838.8U Withdrawn - After Issue CN204113117U (en) | 2014-09-29 | 2014-09-29 | Abrasive water-jet radial bore device |
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| CN (1) | CN204113117U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295238A (en) * | 2014-09-29 | 2015-01-21 | 中国石油天然气股份有限公司 | Radial drilling device for abrasive water jet flow |
| CN113811062A (en) * | 2020-06-15 | 2021-12-17 | 新奥科技发展有限公司 | Plasma generating device and well milling method |
| CN114183076A (en) * | 2020-09-15 | 2022-03-15 | 中国石油天然气股份有限公司 | Hydraulic jet drilling pipe column and hydraulic jet drilling method |
-
2014
- 2014-09-29 CN CN201420569838.8U patent/CN204113117U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295238A (en) * | 2014-09-29 | 2015-01-21 | 中国石油天然气股份有限公司 | Radial drilling device for abrasive water jet flow |
| CN113811062A (en) * | 2020-06-15 | 2021-12-17 | 新奥科技发展有限公司 | Plasma generating device and well milling method |
| CN114183076A (en) * | 2020-09-15 | 2022-03-15 | 中国石油天然气股份有限公司 | Hydraulic jet drilling pipe column and hydraulic jet drilling method |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20161012 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |