CN113833431A - Connecting device of setting tool - Google Patents
Connecting device of setting tool Download PDFInfo
- Publication number
- CN113833431A CN113833431A CN202010582705.4A CN202010582705A CN113833431A CN 113833431 A CN113833431 A CN 113833431A CN 202010582705 A CN202010582705 A CN 202010582705A CN 113833431 A CN113833431 A CN 113833431A
- Authority
- CN
- China
- Prior art keywords
- soluble
- setting tool
- elastic
- ball seat
- bridge plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 11
- 210000000078 claw Anatomy 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a connecting device of a setting tool, which comprises: the upper part of the connecting rod is used for connecting a setting tool; the central pipe is connected to the connecting rod and movably penetrates through the soluble bridge plug or the soluble ball seat; the pressing cap is sleeved on the central pipe and is connected with the central pipe; the elastic connecting sleeve is sleeved at the bottom of the central pipe and is fixedly connected through the shear pin, a thread structure is arranged at the bottom of the elastic connecting sleeve and can stretch out and draw back along the radial direction of the elastic connecting sleeve, the thread structure is screwed at the bottom end of the soluble bridge plug, and in the process of lifting the central pipe, the soluble bridge plug or the soluble ball seat is compressed and sealed in a sitting mode to achieve sealing. According to the connecting device of the setting tool, a shear pin mounting structure is not required to be designed on the soluble bridge plug or the soluble ball seat, so that shear pins cannot be left on the soluble bridge plug or the soluble ball seat, residues generated after the soluble bridge plug or the soluble ball seat is dissolved are reduced, and the influence on later-stage operation is reduced.
Description
Technical Field
The invention relates to the technical field of oil exploitation equipment, in particular to a connecting device of a setting tool.
Background
Due to the fact that drilling and grinding costs are high, time is long and risks are large after the rapid drilling bridge plug perforation combined staged fracturing technology is pressed, research tests of partial pressure tools such as a soluble bridge plug and a soluble ball seat are successively conducted in recent years, and most parts of the pressed tools can be automatically dissolved. The connecting device of conventional setting instrument generally comprises setting push cylinder and setting pull rod, and the pull rod is connected with soluble bridge plug or soluble ball seat through setting shear pin, consequently need design shear pin mounting structure part on soluble bridge plug or the soluble ball seat, leads to the instrument material to increase, and the dissolving time is long, the processing cost is high, sets up simultaneously that the shear pin cuts off the back part and remains in soluble bridge plug or soluble ball seat, and the shear pin material generally is copper, can not dissolve and can't salvage through strong magnetism, produces the influence to later stage operation.
Disclosure of Invention
The invention mainly aims to provide a connecting device of a setting tool, which aims to solve the problem that shear pins are easy to remain in the prior art.
In order to achieve the above object, the present invention provides a connecting device of a setting tool, comprising: the upper part of the connecting rod is used for connecting a setting tool; the central pipe is connected to the connecting rod and movably arranged in the soluble bridge plug or in the soluble ball seat in a penetrating manner; the pressing cap is sleeved on the central pipe and is connected with the central pipe; the elastic connecting sleeve is sleeved at the bottom of the central pipe and is fixedly connected through the shear pin, a thread structure is arranged at the bottom of the elastic connecting sleeve and can stretch out and draw back along the radial direction of the elastic connecting sleeve, the thread structure is screwed with the thread at the bottom end of the soluble bridge plug or the thread at the bottom end of the soluble ball seat, and the soluble bridge plug or the soluble ball seat is sealed in a sitting mode in the process of lifting the central pipe.
Further, the bottom of the center tube is provided with a circumferential groove, after the center tube is lifted a predetermined distance, the shear pins are sheared off, and the thread structure is accommodated in the circumferential groove.
Further, the elastic connecting sleeve comprises a main body, the elastic connecting sleeve comprises a plurality of elastic split claws, the plurality of elastic split claws are arranged on the lower portion of the main body along the circumferential interval of the main body, and the thread structure is formed at the bottoms of the plurality of elastic split claws.
Further, a plurality of elastic split claws are provided at equal intervals in the circumferential direction of the main body.
Further, the shear pin is plural.
Further, press the inside first internal thread that is provided with of cap, the center tube outside is provided with the external screw thread, presses the cap to pass through the cooperation of internal thread and external screw thread to be connected on the center tube.
Further, the connecting rod cover is established on the center tube, and the inside of connecting rod is provided with the second internal thread, and the connecting rod passes through the cooperation of second internal thread and external screw thread to be connected on the center tube.
Further, the inner wall of the elastic connecting sleeve is matched with the outer wall of the central tube.
Furthermore, a plurality of shear pins are arranged at intervals along the circumferential direction of the elastic connecting sleeve.
By applying the technical scheme, the connecting device of the setting tool does not need to design a shear pin mounting structure on the soluble bridge plug or the soluble ball seat, so that the increase of tool materials is avoided, residues after the soluble bridge plug or the soluble ball seat are dissolved are reduced, and the influence on later-stage operation is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 schematically shows a block diagram of an embodiment of a connection device of a setting tool of the invention; and
FIG. 2 schematically illustrates a cross-sectional view of an embodiment of a connection device of a setting tool of the invention prior to setting of a dissolvable bridge plug;
figure 3 schematically shows a cross-sectional view of an embodiment of the connection means of the setting tool of the invention after setting of the dissolvable bridge plug.
Wherein the figures include the following reference numerals:
10. a connecting rod; 20. a central tube; 21. a circumferential groove; 30. pressing the cap; 40. an elastic connecting sleeve; 41. an elastic split claw; 42. a thread structure; 50. a dissolvable bridge plug or a dissolvable ball seat; 60. and (5) shearing the nails.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As described in the background art, the connecting device of the conventional setting tool generally comprises a setting push cylinder and a setting pull rod, and the pull rod is connected with a soluble bridge plug or a soluble ball seat through a setting shear pin, so that a shear pin mounting structure part needs to be designed on the soluble bridge plug or the soluble ball seat, which results in increase of tool materials, correspondingly improves the dissolving time and the processing cost, meanwhile, the part of the cutting part of the setting shear pin remains in the soluble bridge plug or the soluble ball seat, and the shear pin material is generally copper, cannot be dissolved and cannot be salvaged through strong magnetism, thereby affecting later-stage operation.
In order to solve the above problems, referring to fig. 1 to 3, an embodiment of the present invention provides a connecting device of a setting tool, including a connecting rod 10, a central tube 20, a press cap 30 and an elastic connecting sleeve 40, wherein the upper part of the connecting rod 10 is used for connecting the setting tool; a central pipe 20 is connected to the connecting rod 10, and the central pipe 20 is movably arranged in the soluble bridge plug or the soluble ball seat in a penetrating way; the pressing cap 30 is sleeved on the central tube 20 and is connected with the central tube 20; the elastic connecting sleeve 40 is sleeved at the bottom of the central tube 20 and is fixedly connected through a shear pin 60, a thread structure 42 is arranged at the bottom of the elastic connecting sleeve 40, the thread structure 42 can stretch out and draw back along the radial direction of the elastic connecting sleeve 40, the thread structure 42 is screwed with the thread at the bottom end of the soluble bridge plug or the thread at the bottom end of the soluble ball seat, and in the lifting process of the central tube 20, the soluble bridge plug is compressed or the soluble ball seat is compressed and set to realize sealing. According to the connecting device of the setting tool, a shear pin mounting structure is not required to be designed on the soluble bridge plug or the soluble ball seat, so that the increase of tool materials is avoided, residues generated after the soluble bridge plug or the soluble ball seat is dissolved are reduced, and the influence on later-period operation is reduced. Wherein 50 in figure 2 schematically represents a soluble bridge plug or a soluble ball seat.
Preferably, the base of the base pipe 20 in this embodiment is provided with a circumferential groove 21, and after the base pipe 20 is lifted a predetermined distance, the shear pins are sheared and the thread formations 42 are received in the circumferential groove 21. The releasing shear pin is cut off after the soluble bridge plug or the soluble ball seat is set, the thread structure descends to the position of the groove, the thread structure shrinks into the groove under the action of radial component force generated by axial force, and the thread structure and the central pipe can be lifted out from the interior of the soluble bridge plug or the soluble ball seat to realize releasing.
Preferably, the elastic connection sleeve 40 in this embodiment includes a main body, the elastic connection sleeve 40 includes a plurality of elastic split claws 41, the plurality of elastic split claws 41 are arranged at intervals in the circumferential direction of the main body at the lower part of the main body, the thread structure 42 is formed at the bottom of the plurality of elastic split claws 41, that is, the bottom of the plurality of elastic split claws is provided with threads, and the plurality of threads together form the thread structure 42. The plurality of elastic split claws 41 in this embodiment are provided at equal intervals in the circumferential direction of the main body.
The shear pins 60 are provided in plural in this embodiment to ensure the connection stability.
Wherein, the inside first internal thread that is provided with of cap 30 presses in this embodiment, and the center tube 20 outside is provided with the external screw thread, presses cap 30 to pass through the cooperation of internal thread and external screw thread to be connected on center tube 20.
The connecting rod 10 in this embodiment is sleeved on the central tube 20, a second internal thread is arranged inside the connecting rod 10, and the connecting rod 10 is connected to the central tube 20 through the matching of the second internal thread and the external thread.
The inner wall of the elastic connecting sleeve 40 in this embodiment is matched with the outer wall of the central tube 20.
The plurality of shear pins in this embodiment are spaced apart along the circumference of the flexible connection sleeve 40.
The specific working process of one embodiment of the invention is as follows: when the connecting device of the setting tool of the embodiment is applied to work, after first-stage fracturing construction of an oil-gas well is finished, the connecting device of the perforating gun, the setting tool and the setting tool is connected through a cable or an oil pipe, the connecting device of the soluble bridge plug or the soluble ball seat is placed in a preset position in the well, the setting tool is started, the connecting rod drives the central pipe and the split claw to move upwards to pull the soluble bridge plug or the soluble ball seat to compress so as to realize setting, meanwhile, the releasing shear pin is cut off, the elastic split claw contracts and the central pipe is lifted out and released from the soluble bridge plug or the soluble ball seat, the central pipe is continuously lifted to a designed position to be perforated, then the connecting device of the perforating gun and the setting tool is lifted out, and then the soluble ball is put into the connecting device to perform second-stage fracturing construction. And repeating the steps to perform the operation of the rest layer section.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
according to the connecting device of the setting tool, a shear pin mounting structure is not required to be designed on the soluble bridge plug or the soluble ball seat, so that the increase of tool materials is avoided, the processing cost is low, no shear pin is left on the soluble bridge plug or the soluble ball seat, and the dissolving speed is higher.
It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the foregoing detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like numerals typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated herein.
The present disclosure in accordance with certain embodiments described herein is not to be limited in scope by the specific aspects illustrated. As will be apparent to those skilled in the art, many modifications and variations are possible without departing from the spirit and scope of the disclosure. Functionally equivalent methods and apparatuses, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing description, within the scope of the present disclosure. Such modifications and variations are intended to fall within the scope of the appended claims. The disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds, compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A connection device for a setting tool, comprising:
the upper part of the connecting rod (10) is used for connecting a setting tool;
a central tube (20), wherein the central tube (20) is connected to the connecting rod (10), and the central tube (20) is movably arranged in the soluble bridge plug or the soluble ball seat in a penetrating way;
the pressing cap (30) is sleeved on the central pipe (20), and the pressing cap (30) is connected with the central pipe (20);
elastic connection sleeve (40), elastic connection sleeve (40) cover is established the bottom of center tube (20) to connect fixedly through shear pin (60), the bottom of elastic connection sleeve (40) is provided with helicitic texture (42), helicitic texture (42) can be followed the radial flexible of elastic connection sleeve (40), helicitic texture (42) with the screw thread of the bottom of soluble bridging plug or the screw thread of soluble ball seat bottom closes the center tube (20) is lifted the in-process, soluble bridging plug or soluble ball seat seal.
2. A setting tool connection device according to claim 1, c h a r a c t e r i z e d in that the base of the centre tube (20) is provided with a circumferential groove (21), the shear pin (60) being sheared off after a predetermined distance of lifting of the centre tube (20), the thread formation (42) being received in the circumferential groove (21).
3. The connecting device of a setting tool according to claim 1, characterized in that the elastic connecting sleeve (40) comprises a main body, the elastic connecting sleeve (40) comprises a plurality of elastic split claws (41), the plurality of elastic split claws (41) are arranged at the lower part of the main body along the circumferential direction of the main body at intervals, and the thread structure (42) is formed at the bottom of the plurality of elastic split claws (41).
4. A setting tool connection device according to claim 3, characterized in that a plurality of resilient split jaws (41) are arranged equally spaced along the circumference of the body.
5. A connecting device of a setting tool according to claim 1, characterized in that the shear pin (60) is plural.
6. Connecting device of setting tool according to claim 5 characterized in that the press cap (30) is internally provided with a first internal thread and the central tube (20) is externally provided with an external thread, the press cap (30) is connected to the central tube (20) by the fit of the internal thread and the external thread.
7. The connecting device of setting tool according to claim 6, characterized in that the connecting rod (10) is sleeved on the central tube (20), a second internal thread is arranged inside the connecting rod (10), and the connecting rod (10) is connected on the central tube (20) through the matching of the second internal thread and the external thread.
8. A connection device of a setting tool according to claim 1, characterized in that the inner wall of the elastic connection sleeve (40) is adapted to the outer wall of the centre tube (20).
9. A connecting device of a setting tool according to claim 5, characterized in that a plurality of shear pins are arranged at intervals along the circumference of the elastic connecting sleeve (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010582705.4A CN113833431A (en) | 2020-06-23 | 2020-06-23 | Connecting device of setting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010582705.4A CN113833431A (en) | 2020-06-23 | 2020-06-23 | Connecting device of setting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113833431A true CN113833431A (en) | 2021-12-24 |
Family
ID=78964266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010582705.4A Pending CN113833431A (en) | 2020-06-23 | 2020-06-23 | Connecting device of setting tool |
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| CN (1) | CN113833431A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160032682A1 (en) * | 2013-11-22 | 2016-02-04 | Target Completions, LLC | Packer Bridge Plug with Slips |
| CN106894787A (en) * | 2017-03-06 | 2017-06-27 | 四机赛瓦石油钻采设备有限公司 | A kind of single deck tape-recorder watt big orifice bridging plug and its set method |
| CN108716379A (en) * | 2018-07-25 | 2018-10-30 | 百勤能源科技（惠州）有限公司 | A kind of solvable bridge plug of big orifice |
| CN208816084U (en) * | 2018-08-21 | 2019-05-03 | 天津市玛特瑞科技有限公司 | A kind of solvable bridge plug of single deck tape-recorder watt short noresidue |
| CN109763784A (en) * | 2017-11-09 | 2019-05-17 | 中国石油化工股份有限公司 | Divide valve bridge plug hydraulic setting tool and its sets method |
| CN210003248U (en) * | 2019-05-24 | 2020-01-31 | 广东立升行智能科技应用有限公司 | kinds of metal sealing soluble bridge plug |
| US20200072021A1 (en) * | 2018-08-31 | 2020-03-05 | Xi'an Well-Good Energy Technology Co.,Ltd. | Dissolvable, variable-diameter metal sealing and fracturing bridge plug |
-
2020
- 2020-06-23 CN CN202010582705.4A patent/CN113833431A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160032682A1 (en) * | 2013-11-22 | 2016-02-04 | Target Completions, LLC | Packer Bridge Plug with Slips |
| CN106894787A (en) * | 2017-03-06 | 2017-06-27 | 四机赛瓦石油钻采设备有限公司 | A kind of single deck tape-recorder watt big orifice bridging plug and its set method |
| CN109763784A (en) * | 2017-11-09 | 2019-05-17 | 中国石油化工股份有限公司 | Divide valve bridge plug hydraulic setting tool and its sets method |
| CN108716379A (en) * | 2018-07-25 | 2018-10-30 | 百勤能源科技（惠州）有限公司 | A kind of solvable bridge plug of big orifice |
| CN208816084U (en) * | 2018-08-21 | 2019-05-03 | 天津市玛特瑞科技有限公司 | A kind of solvable bridge plug of single deck tape-recorder watt short noresidue |
| US20200072021A1 (en) * | 2018-08-31 | 2020-03-05 | Xi'an Well-Good Energy Technology Co.,Ltd. | Dissolvable, variable-diameter metal sealing and fracturing bridge plug |
| CN210003248U (en) * | 2019-05-24 | 2020-01-31 | 广东立升行智能科技应用有限公司 | kinds of metal sealing soluble bridge plug |
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Application publication date: 20211224 |