A kind of naked eye expansion device and application method
The invention belongs to oil and gas exploration technology fields, more particularly, to a kind of naked eye expansion device.
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
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
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
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.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
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
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
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.