CN109681142A - A kind of naked eye expansion device and application method - Google Patents

A kind of naked eye expansion device and application method Download PDF

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Publication number
CN109681142A
CN109681142A CN201811526922.0A CN201811526922A CN109681142A CN 109681142 A CN109681142 A CN 109681142A CN 201811526922 A CN201811526922 A CN 201811526922A CN 109681142 A CN109681142 A CN 109681142A
Authority
CN
China
Prior art keywords
expansion
naked eye
seal
shorted
short circuit
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
Application number
CN201811526922.0A
Other languages
Chinese (zh)
Inventor
齐月魁
赵涛
石昌帅
祝效华
廖兴松
李海霞
娄永华
齐振
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
Dagang Oilfield Group Co Ltd
Original Assignee
Dagang Oilfield Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dagang Oilfield Group Co Ltd filed Critical Dagang Oilfield Group Co Ltd
Priority to CN201811526922.0A priority Critical patent/CN109681142A/en
Publication of CN109681142A publication Critical patent/CN109681142A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/127Packers; Plugs with inflatable sleeve

Abstract

The present invention provides a kind of naked eye expansion device and application methods, its device includes expansion tube, seal receptacle is arranged in expansion bottom of the tube, setting connection is shorted in expansion tube, the connection is nested with expansion cone outside being shorted, and the connection is shorted lower part and the fixing sleeve for dismantling seal receptacle is arranged.A kind of naked eye expansion device of the present invention and application method, not reduce or be slightly reduced borehole size by repairing using expansion tube to accident section;And by design and the matched fixing sleeve of seal receptacle, removable seal seat reduces the damage to expansion tube, reaches easy to operate, convenient effect.

Description

A kind of naked eye expansion device and application method
Technical field
The invention belongs to oil and gas exploration technology fields, more particularly, to a kind of naked eye expansion device.
Background technique
With the continuous development of gas industries, the increase of petroleum resources exploitation difficulty and constantly mentioning for oil-gas mining technology It rises, drilling depth is consequently increased.Horizontal well, inclined shaft, deep-well, ultradeep well quantity accounting be also to improve year by year.With depth Increase, underground geological condition even more complex, various technical problems are also to come one after another.On the one hand it in drilling process, encounters Problematic well section generallyd use cased mode originally to solve, and such mode will upset original sleeve design, Wellbore reduces in advance, and may cause can not bore up to formation at target locations;On the other hand, because of changeable, Chang Yu the case where Open-Hole Section rock To accidents such as leakages, previous is also to be blocked frequently with setting of casing and its supplementary measures, and playing consequence is also that will affect entire brill Well process.
Naked eye bulged tube technology is exactly that will pass through hydraulic coupling or machine to underground under tubing string during drilling well perhaps well workover Tool power makes its dilatancy, is repaired, is subsidized to accident section, the technical treatments such as leak stopping.
But current naked eye expansion tube sealed bottom is difficult to handle, most processing method is initial tripping in expansion Guan Shi, by expansion bottom of the tube packing, after pressure expansion is good, then external force destroys packing portion, then mechanical drilling;This way It is easy damage expansion tube, eventually leading to repairing effect cannot ensure.
Summary of the invention
In view of this, the present invention is directed to propose a kind of naked eye expansion device and application method, by utilizing expansion tube pair Accident section is repaired, and does not reduce or be slightly reduced borehole size;And by design and the matched fixing sleeve of seal receptacle, detachably Seal receptacle reduces the damage to expansion tube, reaches easy to operate, convenient effect.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of naked eye expansion device, including expansion tube are arranged seal receptacle in expansion bottom of the tube, connection are arranged in expansion tube It is shorted, the connection short circuit is outer to be nested with expansion cone, and the connection is shorted lower part and the fixing sleeve for dismantling seal receptacle is arranged.
Further, the sealed base includes lower short circuit, and the lower short circuit is threadedly coupled with expansion tube, in the lower short circuit Seal rubber plug is set in hole, and the seal rubber plug and lower short circuit are interference fitted, and realize the sealing of expansion bottom of the tube.
Further, the seal rubber plug includes support portion, and several taper rubber plugs or spherical glue are nested with outside the support portion Plug;The lower short circuit inner hole sealing surface is correspondingly arranged as lozenges or arc-shaped surface.
Further, the lower short circuit top is arranged convex platform, and the fixing sleeve lower part is arranged matched lower convex platform, it is described on Boss is pluggable with lower convex platform, provides torque in fixing sleeve rotary course for lower short circuit.
Further, the convex platform is set as semicircle or pintongs interval arc-shaped;The lower convex platform is correspondingly arranged For the semicircle or cross for matching grafting.
Further, several the first seal grooves are set on lower short circuit outer wall, the first sealing is set in the first seal groove Circle.
Further, the connection is shorted outer diameter and is set as reducing type, including big outer diameter part and small outer diameter part, sets at variable diameter Step surface is set, expansion cone is placed on small outer diameter part, and fixing sleeve is threadedly coupled with small outer diameter part, and expansion cone is by step surface and admittedly Surely it is placed on axially position.
Further, internal screw thread of the setting for connected pipes on the big outer diameter part end inner wall.
Further, several second seal grooves and third seal groove is respectively set on the fixing sleeve outer wall and inner wall, The second sealing ring of setting and third sealing ring in second seal groove and third seal groove.
A kind of application method of naked eye expansion device, includes the following steps:
Step 1 installs seal receptacle and expansion tube, by expansion tube G.I.H;
Step 2, expansion cone are placed on connection and are shorted, and fixing sleeve is connected and connect on short circuit, and carries out axis to expansion cone To limit, connection is shorted upper end and connect with oil pipe, in tripping in expansion tube;
Step 3 is passed through drilling fluid out of inner cavity runner, is pressurizeed by power source, and after pressure reaches, connection, which is shorted, to be driven Expansion cone upwards expands expansion tube;
After the completion of step 4, expansion, fixing sleeve and seal receptacle grafting provide torque, and seal receptacle is screwed out from expansion tube.
Compared with the existing technology, a kind of naked eye expansion device of the present invention and application method have the advantage that
Seal receptacle is detachably connected with expansion tube, is dismantled using fixing sleeve, easy to operate simple, and is reduced to expansion tube Injury;
Expansion tube is expanded using expansion cone, can not reduce or be slightly reduced borehole size.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of naked eye expansion device diagrammatic cross-section described in the embodiment of the present invention;
Position profile schematic diagram when Fig. 2 is a kind of work of naked eye expansion device described in the embodiment of the present invention;
Fig. 3 is lower short circuit diagrammatic cross-section described in the embodiment of the present invention 2;
Fig. 4 is A-A diagrammatic cross-section in Fig. 3;
Fig. 5 is lower short circuit diagrammatic cross-section described in the embodiment of the present invention 1;
Fig. 6 is B-B diagrammatic cross-section in Fig. 5;
Fig. 7 is seal rubber plug schematic diagram described in the embodiment of the present invention 2;
Fig. 8 is seal rubber plug schematic diagram described in the embodiment of the present invention 1;
Fig. 9 is fixing sleeve diagrammatic cross-section described in the embodiment of the present invention 4;
Figure 10 is C-C diagrammatic cross-section in Fig. 9;
Figure 11 is fixing sleeve diagrammatic cross-section described in the embodiment of the present invention 3;
Figure 12 is D-D diagrammatic cross-section in Figure 11;
Figure 13 is that connection described in the embodiment of the present invention is shorted diagrammatic cross-section.
Description of symbols:
1- expansion tube;It is shorted under 2-;The first seal groove of 21-;22- convex platform;23- sealing surface;3- seal rubber plug;31- branch Support part;32- taper rubber plug;33- spherical shape rubber plug;4- connection is shorted;The big outer diameter part of 41-;The small outer diameter part of 42-;43- step surface;44- Internal screw thread;5- fixing sleeve;51- lower convex platform;The second seal groove of 52-;53- third seal groove;6- expansion cone;The first sealing ring of 7-; The second sealing ring of 8-;9- third sealing ring;10- oil pipe.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple " It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can To be mechanical connection, it is also possible to be electrically connected;It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Such as Fig. 1 and Fig. 2, seal receptacle is arranged in 1 bottom of expansion tube, swollen in a kind of naked eye expansion device, including expansion tube 1 Setting connection is shorted 4 in tube expansion 1, and the connection, which is shorted outside 4, is nested with expansion cone 6, and the connection is shorted 4 lower parts and is arranged for dismantling The fixing sleeve 5 of seal receptacle.
Seal receptacle is detachably connected with expansion tube 1, is dismantled using fixing sleeve 5, easy to operate simple, and to expansion tube 1 It injures small;
Expansion tube 1 is expanded using expansion cone 6, can not reduce or be slightly reduced borehole size.
Such as Fig. 1-2, the sealed base includes lower short circuit 2, and the lower short circuit 2 is threadedly coupled with expansion tube 1, short under described It connects and seal rubber plug 3 is set in 2 inner holes, the seal rubber plug 3 is shorted 2 interference fits with lower, realizes the sealing of 1 bottom of expansion tube. Several the first seal grooves 21 are set on 2 outer walls of lower short circuit, the first sealing ring 7 is set in the first seal groove 21.
Lower short circuit 2 is threadedly coupled by dextrorotation pin thread screw thread with 1 lower end dextrorotation female thread of expansion tube.
First seal groove 21 is arranged 2-4, and multiple first sealing rings 7 guarantee that the lower sealing being shorted between 2 and expansion tube 1 is imitated Fruit is good.
Embodiment 1, such as Fig. 5 and Fig. 8, the seal rubber plug 3 includes support portion 31, is nested with several cones outside the support portion 31 Shape rubber plug 32,2 inner hole sealing surfaces 23 of the lower short circuit are correspondingly arranged as lozenges.
Embodiment 2, such as Fig. 3 and Fig. 7, the seal rubber plug 3 includes support portion 31, is nested with several balls outside the support portion 31 Shape rubber plug 33,2 inner hole sealing surfaces 23 of the lower short circuit are correspondingly arranged as arc-shaped surface.
The support portion 31 of seal rubber plug 3 uses metal material, prevents taper rubber plug 32 or spherical rubber plug 33 to be squeezed routed, whole The receiving pressure of body seal rubber plug 3 is 20-35MPa.Meet requirement.
2 tops of the lower short circuit are arranged convex platform 22, and 5 lower part of fixing sleeve is arranged matched lower convex platform 51, it is described on Boss 22 and lower convex platform 51 are pluggable, are that lower short circuit 2 provides torque in 5 rotary course of fixing sleeve.
Embodiment 3, on the basis of embodiment 1, such as Fig. 6 and Figure 12, the convex platform 22 is set as the circle at pintongs interval Arc;The lower convex platform 51 is correspondingly arranged to match grafting cross.
Embodiment 4, on the basis of embodiment 2, such as Fig. 4 and Figure 10, the convex platform 22 is set as semicircle;Under described Boss 51 is correspondingly arranged to match the semicircle of grafting.
Such as Figure 13, the connection is shorted 4 outer diameters and is set as reducing type, including big outer diameter part 41 and small outer diameter part 42, becoming Step surface 43 is set at diameter, and expansion cone 6 is placed on small outer diameter part 42, and fixing sleeve 5 is threadedly coupled with small outer diameter part 42, expansion cone 6 pass through step surface 43 and fixing sleeve 5 in axially position.It is second close that several are respectively set on 5 outer wall of fixing sleeve and inner wall The second sealing ring 8 and third sealing is arranged in sealing groove 52 and third seal groove 53 in the second seal groove 52 and third seal groove 53 Circle 9.
The fixing sleeve 5 is threadedly coupled by dextrorotation female thread screw thread with the dextrorotation pin thread for being shorted 4 is connect.
Such as Fig. 9 and 11, the second seal groove 52 and third seal groove 53 install 1-3 circle respectively.Realize fixing sleeve 5 with connect it is short Connect the sealing between 4, the sealing between fixing sleeve 5 and expansion tube 1.
It is matched with the design of the first seal groove 21, convenient for making in its expansion and expansion tube 1 to 6 pressure testing of expansion cone.
Setting is used for the internal screw thread 44 of connected pipes 10 on the 41 end inner wall of big outer diameter part.Internal screw thread 44 is set as dextrorotation Female thread screw thread is threadedly coupled with oil pipe 10.
A kind of application method of naked eye expansion device includes the following steps: step 1, installs seal receptacle and expansion tube 1, By 1 G.I.H of expansion tube;Step 2, expansion cone 6 are placed on connection and are shorted on 4, and fixing sleeve 5 is connected and connect on short circuit 4, and Axial limiting is carried out to expansion cone 6, connection is shorted 4 upper ends and connect with oil pipe 10, in tripping in expansion tube 1;Step 3 is flowed from inner cavity It is passed through drilling fluid in road, is pressurizeed by power source, after pressure reaches, connection is shorted 4 and drives expansion cone 6 upwards to expansion tube 1 It is expanded;After the completion of step 4, expansion, fixing sleeve 5 and seal receptacle grafting provide torque, and seal receptacle is revolved from expansion tube 1 Out.
The foregoing is merely illustrative of the preferred embodiments of the present invention, be not intended to limit the invention spirit and principle it Interior, any modification, equivalent replacement, improvement and so on should be included within the present invention encloses.

Claims (10)

1. a kind of naked eye expansion device, it is characterised in that: including expansion tube (1), seal receptacle is set in expansion tube (1) bottom, Setting connection is shorted (4) in expansion tube (1), and the connection is shorted outside (4) and is nested with expansion cone (6), and the connection is shorted (4) lower part Fixing sleeve (5) for dismantling seal receptacle is set.
2. a kind of naked eye expansion device according to claim 1, it is characterised in that: the sealed base includes lower short circuit (2), the lower short circuit (2) is threadedly coupled with expansion tube (1), and seal rubber plug (3) are arranged in described lower short circuit (2) inner hole, described Seal rubber plug (3) and lower short circuit (2) are interference fitted, and realize the sealing of expansion tube (1) bottom.
3. a kind of naked eye expansion device according to claim 2, it is characterised in that: the seal rubber plug (3) includes support Portion (31), the support portion (31) are nested with several taper rubber plugs (32) or spherical rubber plug (33) outside;Described lower short circuit (2) inner hole Sealing surface (23) is correspondingly arranged as lozenges or arc-shaped surface.
4. a kind of naked eye expansion device according to claim 1, it is characterised in that: in lower short circuit (2) the top setting Matched lower convex platform (51) is arranged in boss (22), fixing sleeve (5) lower part, and the convex platform (22) can insert with lower convex platform (51) It connects, is that lower short circuit (2) provides torque in fixing sleeve (5) rotary course.
5. a kind of naked eye expansion device according to claim 4, it is characterised in that: the convex platform (22) is set as semicircle Shape or pintongs interval it is arc-shaped;The lower convex platform (51) is correspondingly arranged to match the semicircle or cross of grafting.
6. a kind of naked eye expansion device according to claim 1, it is characterised in that: in lower short circuit (2) if being arranged on outer wall Dry the first seal groove (21), is arranged the first sealing ring (7) in the first seal groove (21).
7. a kind of naked eye expansion device according to claim 1, it is characterised in that: the connection is shorted the setting of (4) outer diameter For reducing type, including big outer diameter part (41) and small outer diameter part (42), step surface (43) are set at variable diameter, expansion cone (6) is nested with In on small outer diameter part (42), fixing sleeve (5) is threadedly coupled with small outer diameter part (42), and expansion cone (6) passes through step surface (43) and solid Fixed set (5) is in axially position.
8. a kind of naked eye expansion device according to claim 7, it is characterised in that: on big outer diameter part (41) the end inner wall Internal screw thread (44) for connected pipes (10) is set.
9. a kind of naked eye expansion device according to claim 1, it is characterised in that: fixing sleeve (5) outer wall and inner wall On several second seal grooves (52) and third seal groove (53) is respectively set, in the second seal groove (52) and third seal groove (53) setting the second sealing ring (8) and third sealing ring (9) in.
10. a kind of application method of -9 described in any item naked eye expansion devices according to claim 1, it is characterised in that: including Following steps:
Step 1 installs seal receptacle and expansion tube (1), by expansion tube (1) G.I.H;
Step 2, expansion cone (6) are placed on connection and are shorted on (4), and fixing sleeve (5) is connected and connect on short circuit (4), and to expansion It bores (6) and carries out axial limiting, connection is shorted (4) upper end and connect with oil pipe (10), in tripping in expansion tube (1);
Step 3 is passed through drilling fluid out of inner cavity runner, is pressurizeed by power source, and after pressure reaches, connection is shorted (4) and drives Expansion cone (6) upwards expands expansion tube (1);
After the completion of step 4, expansion, fixing sleeve (5) and seal receptacle grafting provide torque, and seal receptacle is screwed out from expansion tube (1).
CN201811526922.0A 2018-12-13 2018-12-13 A kind of naked eye expansion device and application method Pending CN109681142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811526922.0A CN109681142A (en) 2018-12-13 2018-12-13 A kind of naked eye expansion device and application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811526922.0A CN109681142A (en) 2018-12-13 2018-12-13 A kind of naked eye expansion device and application method

Publications (1)

Publication Number Publication Date
CN109681142A true CN109681142A (en) 2019-04-26

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ID=66186682

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811526922.0A Pending CN109681142A (en) 2018-12-13 2018-12-13 A kind of naked eye expansion device and application method

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Country Link
CN (1) CN109681142A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080156480A1 (en) * 1998-12-07 2008-07-03 Shell Oil Company Apparatus for expanding a tubular member
CN103089193A (en) * 2011-10-31 2013-05-08 中国石油化工股份有限公司 Tail pipe completion method by plugging expandable casing on top of screen pipe
CN203531816U (en) * 2013-09-06 2014-04-09 西安三环科技开发总公司 Expansion construction tool for solid expandable pipe
CN204532194U (en) * 2015-01-23 2015-08-05 潍坊市宇宏石油机械有限公司 A kind of expansion tube can drag for end block apparatus
CN205445521U (en) * 2015-12-31 2016-08-10 中国石油天然气股份有限公司 Drag for expansion pipe subsidy instrument that expands integratively
CN107542420A (en) * 2016-06-24 2018-01-05 中石化石油工程技术服务有限公司 Salvaging type expandable casing patching exempts to bore plug device
CN108533200A (en) * 2018-06-23 2018-09-14 陕西久鑫石油工程技术有限公司 A kind of expansion tube is outstanding to insert fix tool and restorative procedure
CN207879291U (en) * 2018-02-12 2018-09-18 中国石油化工股份有限公司 Expand pipe connected pipe column

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080156480A1 (en) * 1998-12-07 2008-07-03 Shell Oil Company Apparatus for expanding a tubular member
CN103089193A (en) * 2011-10-31 2013-05-08 中国石油化工股份有限公司 Tail pipe completion method by plugging expandable casing on top of screen pipe
CN203531816U (en) * 2013-09-06 2014-04-09 西安三环科技开发总公司 Expansion construction tool for solid expandable pipe
CN204532194U (en) * 2015-01-23 2015-08-05 潍坊市宇宏石油机械有限公司 A kind of expansion tube can drag for end block apparatus
CN205445521U (en) * 2015-12-31 2016-08-10 中国石油天然气股份有限公司 Drag for expansion pipe subsidy instrument that expands integratively
CN107542420A (en) * 2016-06-24 2018-01-05 中石化石油工程技术服务有限公司 Salvaging type expandable casing patching exempts to bore plug device
CN207879291U (en) * 2018-02-12 2018-09-18 中国石油化工股份有限公司 Expand pipe connected pipe column
CN108533200A (en) * 2018-06-23 2018-09-14 陕西久鑫石油工程技术有限公司 A kind of expansion tube is outstanding to insert fix tool and restorative procedure

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Effective date of registration: 20201102

Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin

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Address before: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin

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