CN203321396U - Expansion pipe expansion tool device - Google Patents
Expansion pipe expansion tool device Download PDFInfo
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- CN203321396U CN203321396U CN2013203191711U CN201320319171U CN203321396U CN 203321396 U CN203321396 U CN 203321396U CN 2013203191711 U CN2013203191711 U CN 2013203191711U CN 201320319171 U CN201320319171 U CN 201320319171U CN 203321396 U CN203321396 U CN 203321396U
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Abstract
The utility model discloses an expansion pipe expansion tool device, which belongs to the drilling and completion technical field in oil and gas industry, wherein threads are arranged on the upper portion of a lifting sub, the lifting sub is connected with a drill pipe, the lower end of the lifting sub is connected with a center rod assembly, the center rod assembly is formed by connecting three same center rods through the threads, a group of telescopic baffle plates are arranged on each center rod at a distance, the baffle plates are preset in an expansion pipe after being compressed, and are uniformly distributed on the circumferences of center rods, the lower ends of the center rods are connected with the connecting rod assembly through the threads, the connecting rod assembly comprises an upper connecting rod, an anti-dust ring, a clamping spring and a seal ring, the lower end of the upper connecting rod is connected with a primary piston rod of a combined liquid cylinder through the clamping spring, a seal sleeve is sleeved on the primary piston rod, the inner surface of the seal sleeve and a piston shell are sealed, the primary piston rod and a secondary piston rod are connected through a piston head. The expansion pipe expansion tool device reduces drilling and completion cost, and has extremely wide application prospect.
Description
Technical field
The utility model relates to a kind of expansion tool for expansion pipes device, belongs in oil and gas industry the completion technique field of boring.
Background technology
Bulged tube technology (Expandable Tubular Technology) is the new technology that the nineties produced and grew up last century, can be applicable to the operation process such as drilling well, completion, oil recovery, well workover, be described as and can bring the new technology of changing sexual development.So-called expansion tube refers to the metal circular tube made from special material, its reset condition has ductility preferably, under the effect of expansion force, by the squeezing action of expansion cone, its internal diameter and external diameter are all expanded and permanent plastic deformation are occurred, and expansion rate can reach 15～60%.Bulged tube technology, by expansion tube is implemented to the expand tube operation, changes texture structure and the mechanical performance of expansion tube material, and its intensity index is improved, and plasticity index descends.Bulged tube technology, by selecting or adjust the technological means such as expansion tube material, control expansion rate, can make expansion tube obtain the mechanical performance index suitable with specific steel-grade bushing, thereby meet the instructions for use of petroleum works.
Bulged tube technology generally can be used to solve the variety of issue that bad ground causes, as the shutoff serious thief zone, solves the well problem etc. that collapses, also can be for the subsidy of sleeve pipe and reparation, tail tube hanging, old well intensification, Multilateral Wells, horizontal well etc.According to the purposes of bulged tube technology, it is classified, can be divided into several large technical systems such as casing patch device, bore hole device, expansion tail pipe hanging device and equal diameter drill completion device.
At present, domestic conventional expansion tube expansion process adopts liquid to suppress the mode of expansion, and the bloat tool string is positioned over preset suppressing in chamber, then transfers to together construction well section, squeezes into highly pressurised liquid, and highly pressurised liquid promotes expansion cone and moves, and realizes the expansion operation.Have the following disadvantages: (be less than 7mm) when the expansion tube wall thickness is too thin, can't do and be threaded, pressure chamber is difficult to realize.Suppressed the restriction of chamber size, can not be obtained maximum diameter.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of expansion tool for expansion pipes device.
The purpose of this utility model is for oil drilling provides a kind of expansion tool for expansion pipes device, meets the requirement in the construction operations such as expansion tube repairing casing, shutoff bad ground.
A kind of expansion tool for expansion pipes device, utilize hydraulic coupling to promote hydraulic cylinder and drive expansion cone distending expansion tube, and expansion tube and internal surface of sleeve pipe or bore hole stratum are fitted tightly, and realizes repairing casing, the purpose on shutoff stratum.
A kind of expansion tool for expansion pipes device, screw thread is arranged at lifting sub top, with drilling rod, is connected; The lifting sub lower end is connected with the center-pole assembly, and the center-pole assembly is threaded connection and is formed by three identical center-poles, on every center-pole every a segment distance have one group can be flexible block, after compression, be preset in expansion tube; Block is evenly distributed on the center-pole circumference; The center-pole lower end is connected with the connecting rod assembly by screw thread, and the connecting rod assembly is comprised of upper connecting rod, dust ring, jump ring and sealing ring;
The upper connecting rod lower end is connected with the first stage piston bar of combination fluid cylinder by jump ring; On the first stage piston bar, cover has sealing shroud, sealing shroud inner surface and piston rod packing, external surface and piston shell sealing; The first stage piston bar is connected by piston head with second piston rod; Piston head top has discharge orifice; The piston head external surface has seal groove, and sealing ring is installed in seal groove; Combination fluid cylinder second piston rod lower end and lower extension bar are threaded connection; Lower connection rod structure has discharge orifice; Lower extension bar lower end is connected with hydraulic anchor by screw thread, and the hydraulic anchor lower end is plug;
Expansion cone is arranged on the step lower end that connects clamping sleeve and fluid cylinder top connection, and fluid cylinder top connection and fluid cylinder housing are threaded connection, and expansion cone is connected with the fluid cylinder housing;
Expansion tube is connected to the expansion tube connecting short section by screw thread bottom, and expansion tube connecting short section lower end inner surface car has the partially terraced left hand thread of negative angle, and is connected clamping sleeve and connects; Fluid cylinder housing and expansion cone assembly are arranged on the expansion tube lower end;
The center-pole assembly is comprised of three identical center-poles, block and springs; Three groups of blocks are arranged on every center-pole, every group of four blocks that along the circumferential direction distribute, block can automatic telescopic under spring action;
The hydraulic cylinder assembly is comprised of first stage piston bar, piston head, second piston rod, lower extension bar, fluid cylinder housing, fluid cylinder top connection; Drilling rod is connected with center-pole by lifting sub, and center-pole and upper connecting rod are threaded connection, and upper connecting rod is connected by jump ring with lower connecting rod, and lower connecting rod is connected with the first stage piston bar by screw thread; The first stage piston bar is connected with second piston rod by piston head, and second piston rod is connected with hydraulic anchor by lower extension bar; The fluid cylinder housing is connected with expansion cone by the fluid cylinder top connection;
The upper connecting rod upper end is threaded connection center-pole, and lower end connects lower connecting rod by jump ring, and on upper connecting rod, cover has dust ring, and the lower end external surface has seal groove, and sealing ring is installed in seal groove;
One-level hydraulic cylinder in the hydraulic cylinder body assembly and the cylinder body of two-stage hydraulic cylinder have steam vent and discharge orifice;
Sealing shroud external surface and inner surface in the hydraulic cylinder body assembly have seal groove, and sealing ring is installed in seal groove;
Have discharge orifice on piston head in the hydraulic cylinder body assembly, inner surface and external surface have seal groove, and sealing ring is housed in seal groove;
Have discharge orifice on lower extension bar in the hydraulic cylinder body assembly, outside has seal groove, and sealing ring is housed in seal groove;
In hydraulic cylinder and expansion cone assembly, expansion cone is enclosed within the shoulder lower end that connects clamping sleeve and fluid cylinder top connection; Connecting clamping sleeve is connected with expansion tube by the partially terraced left hand thread of negative angle; The fluid cylinder joint is connected with the one-level hydraulic cylinder by screw thread; The maximum outside diameter of expansion cone is slightly less than the maximum outside diameter of expansion tube;
The hydraulic anchor assembly is connected with piston rod by lower extension bar, thus being connected of realization and center-pole.
A kind of application of expansion tool for expansion pipes device; Available drilling rod is connected with lifting sub predetermined well section place in kit device lower going-into-well.Can be suppressed the expand tube operation after connecting the high-pressure pump on ground and high pressure line.At first upper lifting pipe post before suppressing, on mentioning center-pole during the stroke of a block, start to suppress, highly pressurised liquid enters into the space between cylinder body and first stage piston bar by the discharge orifice on the first stage piston bar, highly pressurised liquid enters into the space between hydraulic cylinder sealing cover and second piston rod by the discharge orifice on second piston rod simultaneously, highly pressurised liquid promotes piston rod and has the trend moved downward, and the block of the ejection on center-pole is fixed on the expansion tube end, stoped piston rod to move downward, according to the hydraulic cylinder relative motion principle, the fluid cylinder housing can only move upward.
When the pressure of the highly pressurised liquid injected reaches the bulbs of pressure of design, fluid cylinder housing and expansion cone assembly will move upward, at first the left-handed negative angle screw buckle of expansion cone front end is thrown off, and expansion cone continues to move upward, and expansion tube is expanded to design size and is fitted on casing wall.
Inject constantly highly pressurised liquid, fluid cylinder housing and expansion cone assembly certain distance that expansion tube can be expanded, this distance equals the stroke of piston rod in hydraulic cylinder body.When fluid cylinder housing and expansion cone assembly move to the full stroke position, highly pressurised liquid can be from the one-level hydraulic cylinder body discharge orifice efflux cylinder pressure housing, now this tool device can't maintain high pressure, and the bloat tool string has completed an expansion stroke, termination of pumping pressure release.
Continue the upper lifting pipe post, expose next group block, proceed to suppress.The design of this bloat tool string has adopted the structure of Multi-stage cylinder, the bulbs of pressure in the time of can reducing the expand tube construction operation, thereby and the sum of series size that can change easily Multi-stage cylinder according to actual service condition reasonably configure the bulbs of pressure.
For different hole conditions, may, at the longer expansion tube of some well section application, therefore need expansible sleeve tool device can carry out the expand tube operation of a plurality of expansion strokes.On center-pole, all blocks are suggested, now, the existing part of expansion tube is swollen to be close to keeps static on a borehole wall, continue center, upper body tubing string, and hydraulic anchor enters in expansion tube, when injecting highly pressurised liquid, hydraulic anchor opens and is fixed on the expansion tube inwall under the highly pressurised liquid effect, realizes that center-pole fixes, now, turn on pump proceeds to suppress the expand tube operation, can complete next expansion stroke.Repeated multiple times expansion sleeve all can the expansion like this.
Technique effect:
The utility model provides a kind of expansion tool for expansion pipes device, constructing operation is simple, safe and reliable, can complete expansion tube and reach the construction operation in the bore hole device in sleeve pipe, can reach the purpose of processing down hole problem, can guarantee again normally carrying out of follow-up drilling process, therefore can effectively process drilling well risk and accident, improve security reliability and the bit speed of drilling process; And reduce raw material and use, obtain maximum diameter, thereby reduce the drilling and well completion cost, there is application prospect very widely.
The accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to following, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 be in the utility model embodiment with
Sleeve pipe is example, after casing collapse or distortion, and the expansion tube of subsidizing 140 * 6mm, casing wall thickness is 8.94mm.
Fig. 2 is the utility model partial schematic diagram.
Fig. 3 is the utility model partial schematic diagram.
Fig. 4 is the utility model partial schematic diagram.
Fig. 5 is the utility model partial schematic diagram.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
The specific embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of expansion tool for expansion pipes device, the expansion tube external surface is vulcanized rubber cover and step at a certain distance, rubber sleeve can make the better adaptability of expansion sleeve to the bore hole borehole wall, strengthen the stickiness of expansion sleeve to the bore hole borehole wall, step can strengthen laminating and the hanging capacity of expansion tube.
In expansion tube assembly, the dilation connect pipe nipple is positioned at expansion tube bottom, by the regular screw threads mouth, with expansion tube, is connected, and other end car has the partially terraced left hand thread button of negative angle and is connected the clamping sleeve connection, and expansion cone can be threaded off after expanding.
The center-pole assembly is comprised of three identical center-poles, block and springs.Three groups of blocks are arranged on every center-pole, every group of four blocks that along the circumferential direction distribute, block can automatic telescopic under spring action.
The hydraulic cylinder assembly is comprised of first stage piston bar, piston head, second piston rod, lower extension bar, fluid cylinder housing, fluid cylinder top connection;
Drilling rod is connected with center-pole by lifting sub, and center-pole and upper connecting rod are threaded connection, and upper connecting rod is connected by jump ring with lower connecting rod, and lower connecting rod is connected with the first stage piston bar by screw thread; The first stage piston bar is connected with second piston rod by piston head, and second piston rod is connected with hydraulic anchor by lower extension bar.The fluid cylinder housing is connected with expansion cone by the fluid cylinder top connection.
The upper connecting rod upper end is threaded connection center-pole, and lower end connects lower connecting rod by jump ring, and on upper connecting rod, cover has dust ring, and the lower end external surface has seal groove, and sealing ring is installed in seal groove.
One-level hydraulic cylinder in the hydraulic cylinder body assembly and the cylinder body appropriate position of two-stage hydraulic cylinder have steam vent and discharge orifice.
Sealing shroud external surface and inner surface in the hydraulic cylinder body assembly have seal groove, and sealing ring is installed in seal groove.
Have discharge orifice on piston head in the hydraulic cylinder body assembly, inner surface and external surface have seal groove, and sealing ring is housed in seal groove.
Have discharge orifice on lower extension bar in the hydraulic cylinder body assembly, outside has seal groove, and sealing ring is housed in seal groove.
Hydraulic cylinder body assembly first stage piston bar is connected by piston head with second piston, and second piston rod and lower extension bar are threaded connection.
In hydraulic cylinder and expansion cone assembly, expansion cone is enclosed within the shoulder lower end that connects clamping sleeve and fluid cylinder top connection; Connecting clamping sleeve is connected with expansion tube by the partially terraced left hand thread of negative angle; The fluid cylinder joint is connected with the one-level hydraulic cylinder by screw thread; The maximum outside diameter of expansion cone is slightly less than the maximum outside diameter of expansion tube.
The hydraulic anchor assembly is connected with piston rod by lower extension bar, thus being connected of realization and center-pole.
Take at wall thickness as 8.94mm's
Subsidizing 140 * 6mm expansion tube in sleeve pipe is example (as shown in Figure 1), illustrates how this tool device is used.
During construction, available drilling rod access lifting sub 1 is lowered into predetermined well section to the kit device.Connect after the high-pressure pump on ground and high pressure line and can inject clear water and suppressed the expand tube operation.Before suppressing, at first stroke of upper body central tube, guarantee that block exposes the expansion tube end, then turn on pump is suppressed, clear water enters the space between fluid cylinder housing 14 and first stage piston bar 9 by the discharge orifice 31 on piston head 15, clear water enters the space between second piston rod 16 and fluid cylinder housing 14 by the discharge orifice 32 on lower extension bar 17 simultaneously, thereby promotion second piston rod 16 and lower extension bar 17 have the trend moved downward, and center-pole 3 is connected with piston rod with lower extension bar 8 by upper extension bar 5.And the block 4 on center-pole 3 is stuck in the expansion tube end after ejecting, stoped this trend moved downward, according to the hydraulic cylinder relative motion principle, fluid cylinder housing 14 drives fluid cylinder top connection 13 and expansion cone 12 has the trend moved upward, when the pressure of the clear water injected reaches 16MPa, fluid cylinder housing and expansion cone assembly will move upward, thereby make the expansion cone 12 that external diameter is 138mm that expansion tube 2 is expanded to 150mm and is fitted in
On the casing pipe sleeve tube wall, as shown in Figure 1.The design of this bloat tool string adopts the structure of two-stage cylinder, and making the bulbs of pressure is 16MPa.
Inject constantly clear water, and keep 16MPa, fluid cylinder housing and expansion cone assembly can be by the certain distances of expansion tube 2 expansion, and this distance equals the stroke of piston rod in hydraulic cylinder body.When piston rod and expansion cone assembly move to the position shown in Fig. 4, the high pressure clear water can discharge orifice 33 and discharge orifice 34 from fluid cylinder housing 14 flow out cylinder body, now tool device can't maintain high pressure, and the bloat tool string has completed an expansion stroke, termination of pumping pressure release.
This tool device can carry out the expand tube operation of a plurality of expansion strokes.When the expand tube end of job of an expansion stroke, the existing part of expansion sleeve 2 is swollen to be close to keeps static on the bore hole borehole wall.Now, above carry the center-pole certain distance, until next group block exposes the expansion tube end, proceed next expansion stroke.When 9 groups of blocks on center-pole all are suggested, now hydraulic anchor 18 can enter in the expansion tube swollen during the upper lifting pipe post, turn on pump continues to inject the high pressure clear water, hydraulic anchor 18 can open and be fixed in expansion tube under pressure, the movement tendency of piston rod is prevented from, the fluid cylinder housing continues to drive the expansion cone motion, completes the expansion operation.Repeated multiple times expansion sleeve 2 all can the expansion like this.
As mentioned above, embodiment of the present utility model is explained, but, as long as not breaking away from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation also all is included in protection domain of the present utility model.
Claims (1)
1. an expansion tool for expansion pipes device, is characterized in that screw thread is arranged at lifting sub top, is connected with drilling rod; The lifting sub lower end is connected with the center-pole assembly, and the center-pole assembly is threaded connection and is formed by three identical center-poles, on every center-pole every a segment distance have one group can be flexible block, after compression, be preset in expansion tube; Block is evenly distributed on the center-pole circumference; The center-pole lower end is connected with the connecting rod assembly by screw thread, and the connecting rod assembly is comprised of upper connecting rod, dust ring, jump ring and sealing ring;
The upper connecting rod lower end is connected with the first stage piston bar of combination fluid cylinder by jump ring; On the first stage piston bar, cover has sealing shroud, sealing shroud inner surface and piston rod packing, external surface and piston shell sealing; The first stage piston bar is connected by piston head with second piston rod; Piston head top has discharge orifice; The piston head external surface has seal groove, and sealing ring is installed in seal groove; Combination fluid cylinder second piston rod lower end and lower extension bar are threaded connection; Lower connection rod structure has discharge orifice; Lower extension bar lower end is connected with hydraulic anchor by screw thread, and the hydraulic anchor lower end is plug;
Expansion cone is arranged on the step lower end that connects clamping sleeve and fluid cylinder top connection, and fluid cylinder top connection and fluid cylinder housing are threaded connection, and expansion cone is connected with the fluid cylinder housing;
Expansion tube is connected to the expansion tube connecting short section by screw thread bottom, and expansion tube connecting short section lower end inner surface car has the partially terraced left hand thread of negative angle, and is connected clamping sleeve and connects; Fluid cylinder housing and expansion cone assembly are arranged on the expansion tube lower end;
The center-pole assembly is comprised of three identical center-poles, block and springs; Three groups of blocks are arranged on every center-pole, every group of four blocks that along the circumferential direction distribute, block can automatic telescopic under spring action;
The hydraulic cylinder assembly is comprised of first stage piston bar, piston head, second piston rod, lower extension bar, fluid cylinder housing, fluid cylinder top connection; Drilling rod is connected with center-pole by lifting sub, and center-pole and upper connecting rod are threaded connection, and upper connecting rod is connected by jump ring with lower connecting rod, and lower connecting rod is connected with the first stage piston bar by screw thread; The first stage piston bar is connected with second piston rod by piston head, and second piston rod is connected with hydraulic anchor by lower extension bar; The fluid cylinder housing is connected with expansion cone by the fluid cylinder top connection;
The upper connecting rod upper end is threaded connection center-pole, and lower end connects lower connecting rod by jump ring, and on upper connecting rod, cover has dust ring, and the lower end external surface has seal groove, and sealing ring is installed in seal groove;
One-level hydraulic cylinder in the hydraulic cylinder body assembly and the cylinder body of two-stage hydraulic cylinder have steam vent and discharge orifice;
Sealing shroud external surface and inner surface in the hydraulic cylinder body assembly have seal groove, and sealing ring is installed in seal groove;
Have discharge orifice on piston head in the hydraulic cylinder body assembly, inner surface and external surface have seal groove, and sealing ring is housed in seal groove;
Have discharge orifice on lower extension bar in the hydraulic cylinder body assembly, outside has seal groove, and sealing ring is housed in seal groove;
In hydraulic cylinder and expansion cone assembly, expansion cone is enclosed within the shoulder lower end that connects clamping sleeve and fluid cylinder top connection; Connecting clamping sleeve is connected with expansion tube by the partially terraced left hand thread of negative angle; The fluid cylinder joint is connected with the one-level hydraulic cylinder by screw thread; The maximum outside diameter of expansion cone is slightly less than the maximum outside diameter of expansion tube;
The hydraulic anchor assembly is connected with piston rod by lower extension bar, thus being connected of realization and center-pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203191711U CN203321396U (en) | 2013-06-05 | 2013-06-05 | Expansion pipe expansion tool device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203191711U CN203321396U (en) | 2013-06-05 | 2013-06-05 | Expansion pipe expansion tool device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321396U true CN203321396U (en) | 2013-12-04 |
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ID=49660759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203191711U Expired - Fee Related CN203321396U (en) | 2013-06-05 | 2013-06-05 | Expansion pipe expansion tool device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320203A (en) * | 2022-01-06 | 2022-04-12 | 西南石油大学 | Secondary rotary expansion tool for expansion pipe and open hole patching process |
-
2013
- 2013-06-05 CN CN2013203191711U patent/CN203321396U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320203A (en) * | 2022-01-06 | 2022-04-12 | 西南石油大学 | Secondary rotary expansion tool for expansion pipe and open hole patching process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 |