CN202914006U - Pressurization type coring tool - Google Patents
Pressurization type coring tool Download PDFInfo
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- CN202914006U CN202914006U CN 201220587571 CN201220587571U CN202914006U CN 202914006 U CN202914006 U CN 202914006U CN 201220587571 CN201220587571 CN 201220587571 CN 201220587571 U CN201220587571 U CN 201220587571U CN 202914006 U CN202914006 U CN 202914006U
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Abstract
The utility model discloses a pressurization type coring tool which comprises a pressure bearing device, a rotation assembly and a core catcher assembly part. The pressure bearing device comprises a pressure bearing assembly and a pin component. The pressure bearing assembly comprises a pressure bearing piston and a pressure bearing sleeve sleeved on the pressure bearing piston. The pin component comprises a shearing pin. The rotation assembly comprises a mandrel, a rotation device is arranged at one end of the mandrel, and an automatic pressure release assembly is arranged at the other end of the mandrel. The core catcher assembly comprises a connection sleeve, a hoop seat, a hoop, a pressurization type core catcher and a self-locking type core catcher, wherein one end of the hoop seat is connected with the lower end of the connection sleeve, the other end of the hoop seat is connected with the pressurization type core catcher, the upper end of the connection sleeve is connected with an inner barrel assembly, the hoop is arranged in the hoop seat, and the self-locking type core catcher is arranged in the pressurization type core catcher. In a coring process, an inner barrel of a pressurization tool can rotate along with a drill so as to solve the problem that core entering the inner barrel is prone to be broken.
Description
Technical field
The utility model relates to a kind of pressurized coring tool, is used for coring of oil and gas well drilling, belongs to the design and manufacturing technology field of drilling and coring delivery instrument.
Background technology
In the drilling process of implementing petroleum gas, in order to understand the oil-containing gas bearing condition of down-hole formation, usually according to the well depth of design, all to carry out the construction that drills through to underground different layers position rock core, in order to obtain preferably rock core, in drilling through rock core, just need to adopt special coring tool.
According to the difference on stratum, the instrument of coring at present mainly comprises normal core-extracting tool and special coring tool, and wherein normal core-extracting tool comprises that self-locking coring tool and pressurized coring tool are several; The patent No. is a kind of novel mechanical pressurized coring tool of CN200620149089.9, discloses a kind of coring tool that uses the machinery pressurization, mainly solves the problem that existing machinery pressurization coring tool can not wash inner core, troublesome poeration and poor reliability.Comprise six square sets, suspension joint, urceolus, reach drill bit, reach core gripper with slip, this instrument can clean inner core; An other patent No. is " a kind of Unconsolidated strata mechanical pressurizing-type closed coring tool " of CN200920244502.3.A kind of mechanical adding pressure type hermetic core taking tool for scall is disclosed, mainly solve existing mechanical pressurized coring tool need repeatedly pitching, on carry drilling tool, be subjected to the large problem of Well Deflection Influence.Comprise six square bars, cut off and be enclosed within six square sets and the hole that cuts off cover corresponding position uniform several horizontal directions that this Unconsolidated strata mechanical pressurizing-type closed coring tool has an only pitching of need, do not use and carry drilling tool, be subjected to the little characteristics of Well Deflection Influence.What these coring tools were the longest at present can obtain 9.2 meters long rock cores, and yield rate can reach more than 60 %, has the good effect of coring.
But the coring tool of these prior aries is when being used for the coring of broken formation at present, because disintegration of core, become post poor, the complicated operation reason, yield rate is just so dissatisfied, main technical problem is that the pressurizing tool inner core of prior art can not rotate, therefore, in the process of coring, when rock core enters the inner core of pressurizing tool, because drive inner cylinder rotating in the time of the urceolus rotation, static rock core and inner core produce relative rotary motion, cause fractureing until broken, and broken rock core is owing to can't correctly playback when going out the heart, got the truth that just is difficult to obtain underground definite layer of position behind the ground.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing coring tool exists when being used for the coring of broken formation, a kind of pressurized coring tool is provided, the utility model is in the process of coring, the inner core of pressurizing tool can rotate along with the rotation of drilling tool, has solved the rock core that enters inner core and has held breakable problem.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of pressurized coring tool, comprise six square bars, six square sets, urceolus short circuit, urceolus, difference short circuit, interior cartridge module and core bit, six square sets are connected with urceolus by the urceolus short circuit, urceolus is connected with the difference short circuit, the difference short circuit is connected with core bit, it is characterized in that: also comprise pressure-bearing device, rotation assembly and core grabber composite member;
Described pressure-bearing device comprises pressure-bearing assembly and pin part, the pressure-bearing assembly comprises pressure-bearing piston and the pressure-bearing cover that is socketed on the pressure-bearing piston, pin part comprises shear pin, described pressure-bearing piston upper end is by the pressurizing adaptor place of pressure-bearing steel-ball limiting in six square sets, the lower end is connected with the rotation assembly, the pressure-bearing cover is fixedly connected with pressure-bearing piston by shear pin, and pressure-bearing cover lower end is spacing on the urceolus short circuit, and the pressure-bearing piston upper end is provided with sand outlet and the runner that is communicated with the pressure-bearing piston inner chamber;
Described rotation assembly comprises axle, and an end of axle is provided with whirligig, and the other end is provided with the releasing pressure automatically assembly, and the releasing pressure automatically assembly comprises steel ball seat and is used for the pressure release steel ball of sealing steel ball seat; The upper end of axle is connected with the lower end of pressure-bearing piston by whirligig, and the lower end is connected with the upper end of interior cartridge module;
Described core grabber composite member comprises adapter sleeve, clip seat, clip, adding pressure type core grabber and self-locking core grabber, clip seat one end is connected with the lower end of adapter sleeve, the other end is connected with the adding pressure type core grabber, the upper end of adapter sleeve is connected with interior cartridge module, clip is arranged in the clip seat, and the self-locking core grabber is arranged in the adding pressure type core grabber.
Described pressure-bearing piston comprises and is provided with letting out sand body and being provided with the runner body of runner of sand outlet, and the external diameter of runner body is less than the external diameter of letting out sand body, and lets out sand body between runner body and pressure-bearing piston body.
The described sand body and runner body and pressure-bearing piston let out is the integral type structure.
Described pin part also comprises the pressure-bearing baffle ring, and the pressure-bearing baffle ring is fixedly connected with pressure-bearing piston, and the spacing step surface place on the urceolus short circuit of pressure-bearing baffle ring.
Described sand outlet radially is arranged on to be let out on the sand body, and runner is axially disposed within on the runner body, and pressure-bearing piston and pressurizing adaptor are connected by runner.
Described runner is four and is groove shapes that four uniform flow passage are distributed on the runner body.
Described sand outlet is three, is evenly distributed on and lets out on the sand body.
Be provided with on the outer wall of described pressure-bearing piston be used to the annular cotter way that is connected and fixed the pressure-bearing cover, shear pin one end passes the pressure-bearing cover and is connected in the annular cotter way.
Described whirligig comprises bearing box, is provided with bearing in bearing box, is provided with the link that is connected with the pressure-bearing piston lower end on the bearing box.
Be provided with semi-ring on the axle in the described bearing box, axially be provided with the back-up ring of stationary half on the semi-ring, a side of bearing is by semi-ring and retainer ring spacing, and opposite side is spacing by the end of bearing box.
The link that is connected with the pressure-bearing piston lower end on the described bearing box is internal thread button link, is provided with the outside nut button link that is connected with interior cartridge module on the described releasing pressure automatically assembly.
The steel ball seat top of described releasing pressure automatically assembly is provided with for the baffle plate to the pressure release steel-ball limiting.
Also be provided with the seal that cooperates with the core bit inwall on the outer wall of described adding pressure type core grabber.
Described adapter sleeve one end is provided with the inner circle screw thread, the other end is provided with the cylindrical screw thread, clip seat one end is connected with adapter sleeve by the cylindrical screw thread, and the clip seat other end is connected with the adding pressure type core grabber by the cylindrical screw thread, and clip is connected with the clip seat by the inner circle screw thread on the clip seat inwall.
Employing the utility model has the advantage of:
One, in the utility model, described rotation assembly comprises axle, and an end of axle is provided with whirligig, and the other end is provided with the releasing pressure automatically assembly, and the releasing pressure automatically assembly comprises steel ball seat and is used for the pressure release steel ball of sealing steel ball seat; The upper end of axle is connected with the lower end of pressure-bearing piston by whirligig, the lower end is connected with the upper end of interior cartridge module, to rotate assembly is arranged in the pressurized coring tool, in the process of coring, because thrust ball bearing with flat seat effect, the inner core of pressurizing tool can rotate along with the rotation of drilling tool, the pressurizing tool inner core solved prior art owing to can not rotate, cause easily entering the problem of the disintegration of core of inner core, and when moving upward, realizes by the pressure release steel ball pressure release, realize sealing when moving downward on steel ball seat, can prevent that drilling fluid from entering inner core.
Two, in the utility model, described core grabber composite member comprises adapter sleeve, the clip seat, clip, adding pressure type core grabber and self-locking core grabber, clip seat one end is connected with the lower end of adapter sleeve, the other end is connected with the adding pressure type core grabber, the upper end of adapter sleeve is connected with interior cartridge module, clip is arranged in the clip seat, the self-locking core grabber is arranged in the adding pressure type core grabber, because the self-locking core grabber of core grabber composite member has the performance that self-locking becomes the post rock core, and the adding pressure type core grabber has support has extracted when pulling out of hole rock core with the performance of slip-off preventing, so applied in any combination by self-locking core grabber and adding pressure type core grabber, in use, it is harder that the self-locking core grabber plays crawl, become post preferably, the rock core effect that the adding pressure type core grabber can't grasp, the adding pressure type core grabber plays guiding and advances the heart, cut the heart and the effect of closed disintegrating rock core, thereby both solved the problem that broken formation can not grasp rock core, obtained the good rock core of post by the self-locking core grabber again, realized that pressurized coring tool both can obtain broken rock core, can obtain into again the good rock core of post.
Three, in the utility model, described pressure-bearing device comprises pressure-bearing assembly and pin part, the pressure-bearing assembly comprises pressure-bearing piston and the pressure-bearing cover that is socketed on the pressure-bearing piston, pin part comprises shear pin, the pressure-bearing steel-ball limiting is passed through in six square sets in described pressure-bearing piston upper end, the lower end is connected with the rotation assembly, the pressure-bearing cover is fixedly connected with pressure-bearing piston by shear pin, pressure-bearing cover lower end is spacing on the urceolus short circuit, the pressure-bearing piston upper end is provided with sand outlet and the runner that is communicated with the pressure-bearing piston inner chamber, pressure-bearing device has solved existing pressurized coring tool is worn pin damage urceolus performance from urceolus problem, can in pitching pressure process, cut off shear pin, inner core is moved down, and then make the adding pressure type core grabber under the effect of drill bit inner chamber, seal the kata-rocks heart, can reach the purpose of not damaging outer tube structure and performance, avoid simultaneously the conventional pin of wearing pin outwards to withdraw from from pin hole, block the situation that core barrel is difficult for the heart.
Four, in the utility model, described pressure-bearing piston comprises and is provided with letting out sand body and being provided with the runner body of runner of sand outlet, the external diameter of runner body is less than the external diameter of letting out sand body, and let out sand body between runner body and pressure-bearing piston body, by automatic leakage sand hole and runner, realized the releasing pressure automatically function, and adopted this structure to improve operating efficiency and the reliability of sand outlet and runner, thereby guaranteed to implement smoothly releasing pressure automatically.
Five, in the utility model, the described sand body and runner body and pressure-bearing piston let out is the integral type structure, not only is convenient to produce, and do not have sealing problem.
Six, sand outlet described in the utility model radially is arranged on and lets out on the sand body, and runner is axially disposed within on the runner body, adopts this structure to be convenient to let out sand and fluid is discharged by runner, has improved the reliability of pressure release.
Seven, in the utility model, described runner is four and is groove shapes that four uniform flow passage are distributed on the runner body, adopt this structure to improve the efficient that fluid is discharged by runner.
Eight, in the utility model, described sand outlet is three, is evenly distributed on and lets out on the sand body, adopts this structure to improve and lets out sand efficient.
Nine, in the utility model, be provided with on the outer wall of described pressure-bearing piston be used to the annular cotter way that is connected and fixed the pressure-bearing cover, shear pin one end passes the pressure-bearing cover and is connected in the annular cotter way, and this structure has further guaranteed can not damage the urceolus performance when pressurized coring tool is worn pin from urceolus.
Ten, in the utility model, described whirligig comprises bearing box, is provided with bearing in bearing box, is provided with the link that is connected with the pressure-bearing piston lower end on the bearing box, adopt this structure not only to guarantee the reliability of rotation, and be convenient to be connected with upper tool.
11, in the utility model, be provided with semi-ring on the axle in the described bearing box, semi-ring is used for the stable and anti-lost of axle, axially be provided with the back-up ring of stationary half on the semi-ring, one side of bearing is by semi-ring and retainer ring spacing, opposite side is spacing by the end of bearing box, adopts this structure to be convenient to install location, also easy disassembly.
12, in the utility model, the link that is connected with the pressure-bearing piston lower end on the described bearing box is internal thread button link, be provided with the outside nut button link that is connected with interior cartridge module on the described releasing pressure automatically assembly, adopt this structure, be convenient to rotate assembly and be connected with lower tool with upper tool and be connected and dismounting.
13, in the utility model, also be provided with the seal that cooperates with the core bit inwall on the outer wall of described adding pressure type core grabber, can realize sealing between adding pressure type core grabber and the core bit inwall by the seal that arranges, further guaranteed both can obtain broken rock core, can obtain into again the good rock core of post.
14, in the utility model, described adapter sleeve one end is provided with the inner circle screw thread, the other end is provided with the cylindrical screw thread, clip seat one end is connected with adapter sleeve by the cylindrical screw thread, and the clip seat other end is connected with the adding pressure type core grabber by the cylindrical screw thread, and clip is connected with the clip seat by the inner circle screw thread on the clip seat inwall, mode by screwed connection, not only improved the packaging efficiency of pressurized coring tool, but also the dismounting after being convenient to core has improved operating efficiency.
15, in the utility model, described pin part also comprises the pressure-bearing baffle ring, the pressure-bearing baffle ring is fixedly connected with pressure-bearing piston, and spacing step surface on the urceolus short circuit, solve existing pressurized coring tool and worn the problem of pin damage urceolus performance from urceolus, can in pitching pressure process, cut off screw, inner core is moved down, and then make the adding pressure type core grabber under the effect of drill bit inner chamber, seal the kata-rocks heart, can reach the purpose of not damaging outer tube structure and performance, avoid simultaneously the conventional pin of wearing pin outwards to withdraw from from pin hole, blocked the situation that core barrel is difficult for the heart.
16, in the utility model, the steel ball seat of described releasing pressure automatically assembly top is provided with for the baffle plate to the pressure release steel-ball limiting, can control the distance that the pressure release steel ball moves upward, and improves the reliability of pressure release steel ball sealing steel ball seat.
Description of drawings
Fig. 1 is the utility model general assembly structural representation
Fig. 2 is the structural representation of rotation assembly in the utility model
Fig. 3 is the structural representation of the utility model pressure-bearing device
Fig. 4 is the structural representation of the utility model pressure-bearing piston
Fig. 5 is the perspective view of the utility model pressure-bearing piston
Fig. 6 is the structural representation of the utility model core grabber composite member
Be labeled as among the figure: 1, top connection, 2, six square bars, 3, six square sets, 4, stripper rubber, 5, pressurizing adaptor, 6, the pressure-bearing steel ball, 7, pressure-bearing piston, 8, shear pin, 9, the pressure-bearing cover, 10, the pressure-bearing baffle ring, 11, the urceolus short circuit, 12, the rotation assembly, 13, urceolus, 14, interior cartridge module, 15, the difference short circuit, 16, the core grabber composite member, 17, core bit, 18, sand outlet, 19, runner, 20, cotter way, 21, the adding pressure type core grabber, 22, axle, 23, steel ball seat, 24, the pressure release steel ball, 25, bearing box, 26, bearing, 27, semi-ring, 28, back-up ring, 29, baffle plate, 30, adapter sleeve, 31, the clip seat, 32, clip, 33, the self-locking core grabber, 34, seal.
The specific embodiment
Embodiment 1
A kind of pressurized coring tool, comprise top connection 1, six square bars 2, six square sets 3, urceolus short circuit 11, urceolus 13, difference short circuit 15, interior cartridge module 14 and core bit 17, six square sets 3 are connected with urceolus 13 by urceolus short circuit 11, urceolus 13 is connected with difference short circuit 15, difference short circuit 15 is connected with core bit 17, also comprises pressure-bearing device, rotation assembly 12 and core grabber composite member 16.
To being described as follows of the pressure-bearing device in the utility model:
Pressure-bearing device comprises pressure-bearing assembly and pin part, the pressure-bearing assembly comprises pressure-bearing piston 7 and the pressure-bearing cover 9 that is socketed on the pressure-bearing piston 7, pin part comprises shear pin 8, described pressure-bearing piston 7 upper ends are by on the step in the pressure-bearing steel ball 6 spacing pressurizing adaptors 6 in six square sets 3, pressure-bearing steel ball 6 can transfer the pressure to pressure-bearing piston 7, the lower end is connected with rotation assembly 12, pressure-bearing cover 9 is fixedly connected with pressure-bearing piston 7 by shear pin 8, it is spacing on urceolus short circuit 11 that pressure-bearing is overlapped 9 lower ends, and pressure-bearing piston 7 upper ends are provided with sand outlet 18 and the runner 19 that is communicated with pressure-bearing piston 7 inner chambers.
Described pressure-bearing piston 7 comprises and is provided with letting out sand body and being provided with the runner body of runner 19 of sand outlet 18, and the external diameter of runner body is less than the external diameter of letting out sand body, and lets out sand body between runner body and pressure-bearing piston body.
Be provided with on the outer wall of described pressure-bearing piston 7 be used to the annular cotter way 20 that is connected and fixed pressure-bearing cover 9, shear pin 8 one ends pass the screwed hole on the pressure-bearing cover 9, and the end of shear pin 8 is positioned at annular cotter way 20.In pitching pressure process, cut off shear pin 8, inner core is moved down, and then make adding pressure type core grabber 21 under the effect of drill bit inner chamber, seal the kata-rocks heart, by automatic leakage sand hole 18 and runner 19, realized the releasing pressure automatically function, adopt this structure to improve operating efficiency and the reliability of sand outlet 18 and runner 19, thereby guaranteed to implement smoothly releasing pressure automatically.
In the utility model, described pin part also comprises pressure-bearing baffle ring 10, and pressure-bearing baffle ring 10 is fixedly connected with pressure-bearing piston 7, and spacing step surface place on urceolus short circuit 11.
Preferred embodiment of the present utility model is, described sand outlet 18 radially is arranged on to be let out on the sand body, and runner 19 is axially disposed within on the runner body.
Further, described runner 19 is four and is groove shapes, and four runners 19 are evenly distributed on the runner body, is used for the drilling fluid circulation, and pressure-bearing piston 7 and pressurizing adaptor 5 are connected by runner 19.Described sand outlet 18 is three, is evenly distributed on and lets out on the sand body.
The order of connection of pressure-bearing device and connected mode are: coring tool assembles lower member first except pressure-bearing cover 9, by connecting thread the bearing box 25 of pressure-bearing piston 7 with lower end rotation assembly is connected first; Then pressure-bearing baffle ring 10 is enclosed within on the pressure-bearing cover 9, with shear pin 8 pressure-bearing cover 9 is connected with pressure-bearing piston and connects; At last all coring tool internal components are put into urceolus, guarantee that pressure-bearing baffle ring 10 lower surfaces arrive on the interior step surface of urceolus pipe nipple 11; Then coring tool is mentioned rig floor pulls tight each screw thread of urceolus, assembling pressing mechanism in ground on the scene; Install successively sealing ring, pressurizing adaptor and on connect; Then pressing mechanism is hung on rig floor, be threaded connection again six square sets are connected with the urceolus pipe nipple; At last, first-class core bit is transferred drilling tool and the good slips of seat and safety slip, connects drilling tool and enters well, the construction of coring.
Pressure-bearing device operating principle of the present utility model is: cut off shear pin in pitching pressure process, inner core is moved down, and then make the adding pressure type core grabber seal the kata-rocks heart under the effect of drill bit inner chamber, by sand outlet and runner, realized the releasing pressure automatically function.
To being described as follows of the rotation assembly in the utility model:
Rotation assembly 12 comprises axle 22, and an end of axle 22 is provided with whirligig, and the other end is provided with the releasing pressure automatically assembly, and the releasing pressure automatically assembly comprises steel ball seat 23 and is used for the pressure release steel ball 24 of sealing steel ball seat 23; The upper end of axle 22 is connected by the lower end of whirligig with pressure-bearing piston 7, and the lower end is connected with the upper end of interior cartridge module 14.
Preferred embodiment of the present utility model is that described whirligig comprises bearing box 25, is provided with bearing 26 in bearing box 25, is provided with the link that is connected with pressure-bearing piston 7 lower ends on the bearing box 25.The structure of whirligig has a lot, and this is preferred embodiment, but is not limited to this structure, also can adopt rotational structure of the prior art.
Further, be provided with semi-ring 27 on the axle in the described bearing box 25, semi-ring 27 is used for the stable and anti-lost of axle 22, axially is provided with the back-up ring 28 of stationary half on the semi-ring 27, one side of bearing 26 is spacing by semi-ring 27 and back-up ring 28, and opposite side is spacing by the end of bearing box 25.
The link that is connected with pressure-bearing piston 7 lower ends on the described bearing box 25 is internal thread button link, is provided with the outside nut button link that is connected with interior cartridge module 14 on the described releasing pressure automatically assembly.
Steel ball seat 23 tops of described releasing pressure automatically assembly are provided with for the baffle plate 29 spacing to pressure release steel ball 24, have opening on the baffle plate 29, can control the distance that pressure release steel ball 24 moves upward.
Rotation assembly operating principle of the present utility model is: in the process of coring, because thrust ball bearing with flat seat effect, the inner core of pressurizing tool can rotate along with the rotation of drilling tool by bearing box, when fluid when dirty, pressure release steel ball gear is realized pressure process in steel ball seat, prevents that drilling fluid from entering inner core; When liquid backflow, pressure release steel ball and steel ball seat separately make fluid pass through runner, realize pressure leak process.
To being described as follows of the core grabber composite member in the utility model:
Described core grabber composite member comprises adapter sleeve 30, clip seat 31, clip 32, adding pressure type core grabber 21 and self-locking core grabber 33, clip seat 31 1 ends are connected with the lower end of adapter sleeve 30, the other end is connected with adding pressure type core grabber 21, the upper end of adapter sleeve 30 is connected with interior cartridge module 14, clip 32 is arranged in the clip seat 31, and self-locking core grabber 33 is arranged in the adding pressure type core grabber 21.Self-locking core grabber 33 and adding pressure type core grabber 21 are threaded connection, self-locking core grabber 33 by on carry drilling tool, the relative rock core of core grabber is descending along tapering, until the mode of locking realizes entering the self-locking of rock core in the core barrel, makes the rock core that enters in the core barrel locked and can not skid off.Adding pressure type core grabber 21 is in the process that the pitching pressurization moves down, and produces the pressure to core grabber under the effect of drill bit inner chamber, and order ground is the effect of playing the closed disintegrating rock core.The core grabber composite member has support has extracted when pulling out of hole rock core with the performance of slip-off preventing, both solved the problem that broken formation can not grasp rock core, can obtain into again the good rock core of post.Adding pressure type core grabber 21 and self-locking core grabber 33 all can adopt structure of the prior art.
In the utility model, on the outer wall of described adding pressure type core grabber 21, also be provided with the seal 34 that cooperates with the core bit inwall.
Preferred connected mode of the present utility model is, described adapter sleeve 30 1 ends are provided with the inner circle screw thread, the other end is provided with the cylindrical screw thread, clip seat 31 1 ends are connected with adapter sleeve 30 by the cylindrical screw thread, clip seat 31 other ends are connected with the adding pressure type core grabber by the cylindrical screw thread, and clip 32 is connected with the clip seat by the inner circle screw thread on clip seat 31 inwalls.
The utility model core grabber composite member operating principle is: the self-locking core grabber by on carry drilling tool, the relative rock core of core grabber is descending along tapering, until the mode of locking realizes entering the self-locking of rock core in the core barrel, make the rock core that enters in the core barrel locked and can not skid off, the adding pressure type core grabber is in the process that the pitching pressurization moves down, under the effect of drill bit inner chamber, produce the pressure to core grabber, the closed disintegrating rock core.
Embodiment 2
Below the utility model done describe in further detail:
Pressure-bearing piston is arranged on the stage casing of pressurized coring tool, front end in pressure-bearing piston 7 is provided with sand outlet 18 and runner 19, pressure-bearing piston 7 be provided with foremost four runners 19, runner 19 is groove shapes, is provided with three sand outlets 18 at the circumference of the pressure-bearing piston 7 of runner 19 rear ends; The upper end of pressure-bearing piston 7 is blocked in by pressure-bearing steel ball 6 in the pressurizing adaptor 5 of coring tool, and the upper end of pressurizing adaptor 5 is six square bars 2, is provided with stripper rubber 4 between six square bars 2 and pressurizing adaptor 5; Six square bars 2, pressurizing adaptor 5 and stripper rubber 4 are arranged in six square sets 3, and the upper end of six square bars 2 connects top connection 1 by male joint; The rear end of pressure-bearing piston 7 cooperates the location by pressure-bearing cover 9 and pressure-bearing baffle ring 10, and pressure-bearing cover 9 is connected with pressure-bearing piston 7 by shear pin 8, and pressure-bearing piston 7 is located by urceolus short circuit 11; There is thread the rear end of pressure-bearing piston 7; The stage casing of pressure-bearing piston 7 is provided with cotter way 20.
Rotation assembly 12 is arranged on the lower end of pressure-bearing piston 7, and rotation assembly 12 comprises axle and bearing box, and an end of axle is provided with the releasing pressure automatically assembly, and steel ball seat 23 is arranged in the releasing pressure automatically assembly, is provided with pressure release steel ball 24 in steel ball seat 23; The cylindrical of releasing pressure automatically assembly is the outside nut button that is connected with lower ending tool; The other end in axle is bearing box 25, is provided with bearing 26 in bearing box 25, also is provided with axial steel wire back-up ring 28 at the tail end of axle 22, and axial steel wire back-up ring 28 is arranged in the semi-ring 27; The afterbody inner circle of described bearing box 25 has the internal thread button that is connected with upper tool; The lower end of rotation assembly 12 is connected with the inner core of core grabber composite member, and rotation assembly 12 is arranged in the urceolus short circuit 11, and the lower end of urceolus short circuit 11 is connected with the urceolus of core grabber composite member.
Core grabber composite member 16 is connected to the lower end of pressurization coring tool, comprises adapter sleeve 30, clip seat 31, clip 32, self-locking core grabber 33 and adding pressure type core grabber 21, and the core grabber composite member is arranged in urceolus 13 and the difference short circuit 15; Clip 32 is arranged in the clip seat 31, respectively inner circle screw thread and cylindrical screw thread at the two ends of adapter sleeve 30, clip seat 31, clip 32 and adding pressure type core grabber 21, the inner circle screw thread of adding pressure type core grabber 21 and the cylindrical screwed connection of clip seat 31, the inner circle screw thread of clip seat 31 and the cylindrical screwed connection of adapter sleeve 30, the inner circle screw thread of adapter sleeve 30 is connected with the instrument on top, also is provided with seal 34 at the cylindrical of adding pressure type core grabber 21.
Self-locking core grabber 33 and adding pressure type core grabber 21 are arranged on the front end of core grabber composite member, self-locking core grabber 33 be by on carry drilling tool, the relative rock core of core grabber is descending along tapering, until the mode of locking realizes entering the self-locking of rock core in the core barrel, make the rock core that enters in the core barrel locked and can not skid off.Adding pressure type core grabber 21 is in the process that the pitching pressurization moves down, and produces the pressure to core grabber under the effect of drill bit inner chamber, and order ground is the effect of playing the closed disintegrating rock core.
Connected mode of the present utility model:
Before the use the utility model of going into the well, first pressure-bearing piston 7, rotation assembly 12 and core grabber composite member are assembled respectively, then pack into successively in six square sets 3 six square bars 2, stripper rubber 4 and pressure-bearing steel ball 6 are in six square sets 3 of again pressure-bearing piston 7 that assembles being packed into; The screwed connection of the upper end of the rotation assembly 12 that then will assemble and pressure-bearing piston 7 lower ends, and then with urceolus short circuit 11 be enclosed within the rotation assembly 12 the outside, and connect with the lower end of six square sets 3, then the core grabber composite member upper end that assembles is connected with rotation assembly 12, again the urceolus 13 that connects and difference short circuit 15 are enclosed within the outside of core grabber composite member, and be connected with the lower end of urceolus short circuit 11, then core bit 17 is connected to the urceolus lower end, has so just finished assembling of the present utility model.
The course of work of the present utility model:
Go into the well when using, the top connection 1 on the utility model is connected with drilling tool, then send into the down-hole by drilling tool, arrive after the predetermined coring bed, coring tool begins rotation under the drive of drilling tool, the core bit of front end begins cutting rock, because core bit is hollow, so, when drill bit constantly crept into downwards, the rock that is cut had just formed the rock core post, and constantly entered the inner core of core barrel, after coring footage has bored, cut and by the drill-well operation rules drilling fluid is circulated before the heart.
In the process of coring, because the thrust ball bearing with flat seat effect, an end of axle is provided with the releasing pressure automatically assembly, in the releasing pressure automatically assembly steel ball seat is arranged, and is provided with the pressure release steel ball in steel ball seat; The cylindrical of releasing pressure automatically assembly is the outside nut button that is connected with lower ending tool; The other end in axle is bearing box, is provided with bearing in bearing box, also is provided with the axial steel wire back-up ring at the tail end of axle, and the axial steel wire back-up ring is arranged in the semi-ring; The afterbody inner circle of bearing box has the internal thread button that is connected with upper tool; The lower end of rotation assembly is connected with the inner core of core grabber composite member, and the rotation assembly is arranged in the urceolus short circuit, and the lower end of urceolus short circuit is connected with the urceolus of core grabber composite member, and the inner core of pressurizing tool can rotate along with the rotation of drilling tool.
The self-locking core grabber by on carry drilling tool, the relative rock core of core grabber is descending along tapering, until the mode of locking realizes entering the self-locking of rock core in the core barrel, makes the rock core that enters in the core barrel locked and can not skid off.The adding pressure type core grabber is in the process that the pitching pressurization moves down, and produces the pressure to core grabber under the effect of drill bit inner chamber, and order ground is the effect of playing the closed disintegrating rock core.
Cut the heart: it is complete when cutting the heart to core, and carrying drilling tool on first exposes ball seat, drops into pressure-bearing steel ball 6 again, press down drilling tool and guarantee that shear pin 8 is cut off, continue pressurization, static 20-30S, this moment, inner core moved down, under the effect of pressurized coring drill bit inner chamber, and the broken rock core of adding pressure type core grabber pinch confinement; Then carry drilling tool on slowly, note observing weight indicator and show.If on carry drilling tool surpass the drilling tool compression apart from and do not increase suspending weight, assert that then cutting heart operation finishes.Cut the heart complete after, pull out of hole by the requirement of drill-well operation rules.
Go out the heart: cut the heart complete and rise get on the rig floor after, lay down first the screw thread between six square sets 3 and the urceolus pipe nipple 11, pressure-bearing piston 7 of top connection 1, six square bars 2, six square sets 3, pressurizing adaptor 5 and below etc. is separated, note dropping of pressure-bearing steel ball 6 and shear pin 8 in the separation process, avoid falling into well head or loss, then be connected with pressure-bearing piston 7 with the promotion instrument, on draw the promotion instrument, inner core is proposed urceolus 13, take off shear pin 8 in the pressure-bearing cover with the screw cutter again, go out requirements of heart operational procedure by drilling well at last and go out the heart and operate.
Continuous coring: clean when finishing out heart operation and inner core, after taking out disconnected operation such as shear pin 8 grades, if need to carry out continuous coring, first inner core is fixed on the urceolus pipe nipple 11 with the inner core chuck, then be connected with rotation assembly 12, rotation assembly 12 is connected with pressure-bearing piston 7, put into pressure-bearing baffle ring 10 and pressure-bearing cover 9, pressure-bearing cover 9 is connected with pressure-bearing piston connects by shear pin 8, connect pressure-bearing piston 7 with the promotion instrument again, and sling pressure-bearing piston 7 and following inner core etc., then take off the inner core chuck, pressure-bearing baffle ring 10 just falls to be placed on the step of urceolus pipe nipple 11, slowly transferring the promotion instrument, pressure-bearing piston 7 and interior cartridge module unload the promotion instrument at last on pressure-bearing baffle ring 10.Top connection 1, six square bars 2, six square sets 3,5 four parts of pressurizing adaptor need not be dismantled under slide smooth and stripper rubber 4 sealing effectiveness good situations, after finishing aforesaid operations, six square sets 3 and urceolus pipe nipple 11 are threaded connection, can enter well and carry out next step operation of coring, and so forth.
Claims (10)
1. pressurized coring tool, comprise six square bars (2), six square sets (3), urceolus short circuit (11), urceolus (13), difference short circuit (15), interior cartridge module (14) and core bit (17), six square sets (3) are connected with urceolus (13) by urceolus short circuit (11), urceolus (13) is connected with difference short circuit (15), difference short circuit (15) is connected with core bit (17), it is characterized in that: also comprise pressure-bearing device, rotation assembly (12) and core grabber composite member (16);
Described pressure-bearing device comprises pressure-bearing assembly and pin part, the pressure-bearing assembly comprises pressure-bearing piston (7) and is socketed in pressure-bearing cover (9) on the pressure-bearing piston (7), pin part comprises shear pin (8), described pressure-bearing piston (7) upper end is located by the spacing pressurizing adaptor (5) in six square sets (3) of pressure-bearing steel ball (6), the lower end is connected with rotation assembly (12), pressure-bearing cover (9) is fixedly connected with pressure-bearing piston (7) by shear pin (8), pressure-bearing cover (9) lower end is spacing on urceolus short circuit (11), and pressure-bearing piston (7) upper end is provided with sand outlet (18) and the runner (19) that is communicated with pressure-bearing piston (7) inner chamber;
Described rotation assembly (12) comprises axle (22), and an end of axle (22) is provided with whirligig, and the other end is provided with the releasing pressure automatically assembly, and the releasing pressure automatically assembly comprises steel ball seat (23) and is used for the pressure release steel ball (24) of sealing steel ball seat (23); The upper end of axle (22) is connected by the lower end of whirligig with pressure-bearing piston (7), and the lower end is connected with the upper end of interior cartridge module (14);
Described core grabber composite member (16) comprises adapter sleeve (30), clip seat (31), clip (32), adding pressure type core grabber (21) and self-locking core grabber (33), clip seat (31) one ends are connected with the lower end of adapter sleeve (30), the other end is connected with adding pressure type core grabber (21), the upper end of adapter sleeve (30) is connected with interior cartridge module (14), clip (32) is arranged in the clip seat (31), and self-locking core grabber (33) is arranged in the adding pressure type core grabber (21).
2. pressurized coring tool according to claim 1, it is characterized in that: described pressure-bearing piston (7) comprises and is provided with letting out sand body and being provided with the runner body of runner (19) of sand outlet (18), the external diameter of runner body is less than the external diameter of letting out sand body, and lets out sand body between runner body and pressure-bearing piston body.
3. pressurized coring tool according to claim 1 and 2, it is characterized in that: described pin part also comprises pressure-bearing baffle ring (10), pressure-bearing baffle ring (10) is fixedly connected with pressure-bearing piston (7), and spacing step surface on urceolus short circuit (11).
4. pressurized coring tool according to claim 2, it is characterized in that: described sand outlet (18) radially is arranged on to be let out on the sand body, and runner (19) is axially disposed within on the runner body.
5. pressurized coring tool according to claim 4, it is characterized in that: described runner (19) is four and is groove shapes that four runners (19) are evenly distributed on the runner body.
6. pressurized coring tool according to claim 4, it is characterized in that: described sand outlet (18) is three, is evenly distributed on and lets out on the sand body.
7. according to claim 1,2,4,5 or 6 described pressurized coring tools, it is characterized in that: be provided with on the outer wall of described pressure-bearing piston (7) be used to the annular cotter way (20) that is connected and fixed the pressure-bearing cover, shear pin (8) one ends pass pressure-bearing cover (9) and are connected in the annular cotter way (20).
8. according to claim 1,2,4,5 or 6 described pressurized coring tools, it is characterized in that: described whirligig comprises bearing box (25), in bearing box (25), be provided with bearing (26), be provided with the link that is connected with pressure-bearing piston (7) lower end on the bearing box (25).
9. pressurized coring tool according to claim 8, it is characterized in that: be provided with semi-ring (27) on the axle (22) in the described bearing box (25), axially be provided with the back-up ring (28) of stationary half on the semi-ring (27), one side of bearing (26) is spacing by semi-ring (27) and back-up ring (28), and opposite side is spacing by the end of bearing box (25).
10. according to claim 1,2,4,5,6 or 9 described pressurized coring tools, it is characterized in that: also be provided with the seal (34) that cooperates with core bit (17) inwall on the outer wall of described adding pressure type core grabber (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220587571 CN202914006U (en) | 2012-11-09 | 2012-11-09 | Pressurization type coring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220587571 CN202914006U (en) | 2012-11-09 | 2012-11-09 | Pressurization type coring tool |
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| Publication Number | Publication Date |
|---|---|
| CN202914006U true CN202914006U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220587571 Expired - Lifetime CN202914006U (en) | 2012-11-09 | 2012-11-09 | Pressurization type coring tool |
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| Country | Link |
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| CN (1) | CN202914006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900390A (en) * | 2012-11-09 | 2013-01-30 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
-
2012
- 2012-11-09 CN CN 201220587571 patent/CN202914006U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900390A (en) * | 2012-11-09 | 2013-01-30 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
| CN102900390B (en) * | 2012-11-09 | 2015-09-23 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
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| CX01 | Expiry of patent term |