CN205000946U - Separate stratum fracfturing sand control fills switch instrument of using - Google Patents
Separate stratum fracfturing sand control fills switch instrument of using Download PDFInfo
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- CN205000946U CN205000946U CN201520668439.1U CN201520668439U CN205000946U CN 205000946 U CN205000946 U CN 205000946U CN 201520668439 U CN201520668439 U CN 201520668439U CN 205000946 U CN205000946 U CN 205000946U
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- filling
- main body
- sliding sleeve
- switch main
- sand control
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Abstract
The utility model discloses a separate stratum fracfturing sand control fills switch instrument of using, include the filling pipe, fill sliding sleeve, center tube, switch body, the sliding sleeve is filled in the installation of filling pipe inner wall, center tube outer wall installation switch body is equipped with on the filling pipe and fills the mouth, the both ends of filling the sliding sleeve set up elasticity and restraint the claw, switch body outer wall sets up the boss, and the boss of this switch body is followed the center tube and is reciprocated in the filling pipe to the cooperation elasticity of filling the both ends of sliding sleeve is restrainted step on the claw and is driven and fill sliding sleeve axial displacement respectively, realizes filling opening and closing of sliding sleeve filling mouthful on to the filling pipe. The utility model discloses sealed bad, the shortcoming that the pressure -bearing is low or not enough that can overcome effectively or avoid to exist among the prior art realize the separate stratum fracfturing and fill the sand control, easy operation, safe and reliable.
Description
Technical field
The utility model relates to separate stratum fracfturing filling anti-sand technology, specifically a kind of layering fracturing sand control filling switching tools.
Background technology
The features such as the layer for existence in current hyposmosis, the exploitation of many thin layer reservoir is many, interlayer span is large, non-homogeneity strong, permeability is lower, it is large that sand-preventing process implements difficulty, and high-pressure extrusion filling effect is undesirable.The general fracturing sand control of many employings at present, have larger discharge capacity, higher operation pressure and larger treatment radius compared with high-pressure packing sand-control, its oil increasing effect is relatively better.But general enforcement fracturing sand control is large due to interlayer difference, causes interlayer to be transformed uneven, even has substratum to employ, affect fracturing sand control effect; Meanwhile, because oil reservoir span is large, in work progress due to substratum crack, annular plug, easily occur pressure jump phenomenon, can cause the failure of fracturing sand control time serious, construction risk is high.For these problems that general fracturing sand control exists, the development necessity existing of separate stratum fracfturing filling anti-sand technology and urgency, therefore, developed pressure crack filling anti-sand instrument.Because pressure crack filling anti-sand pressure is higher, discharge capacity is comparatively large, this has higher requirement to separate stratum fracfturing packing tool especially switching tools.
Utility model content
The purpose of this utility model is to provide a kind of layering fracturing sand control filling switching tools, it is a kind of two-way sliding sleeve switch, the open and close of filling mouth are realized by the draw-in groove screens of switching tools, the contraction of spring and release, and the shortcoming that the poor sealing that can effectively overcome or avoid existing in prior art, pressure-bearing are low or deficiency, realize separate stratum fracfturing filling anti-sand, simple to operate, safe and reliable.
In order to reach above-mentioned purpose, the utility model have employed following technical scheme, a kind of layering fracturing sand control filling switching tools, comprise filling pipe, filling sliding sleeve, central tube, Switch main body, described filling pipe inwall installs filling sliding sleeve, described central tube outer wall installs Switch main body, filling pipe is provided with filling mouth, the two ends of described filling sliding sleeve arrange elastic bunch pawl, described Switch main body outer wall arranges boss, the boss of this Switch main body is followed central tube and is moved up and down in filling pipe, thus coordinate the step on the elastic bunch pawl at the two ends of filling sliding sleeve to drive filling sliding sleeve to move axially respectively, realize the opening and closing of filling sliding sleeve to the filling mouth on filling pipe.
Described Switch main body inwall is sitting on central tube by spring base and support spring, namely Switch main body energy resilient radial moves, described filling pipe upper and lower two ends screw thread type is connected to the outer wall of upper and lower joint, inclined-plane is all offered in the upper and lower two ends of Switch main body, the bottom of top connection is provided with inclined-plane, and this inclined-plane coordinates with the upper inclined surface of Switch main body and realizes squeezing action; Equally, the top of lower contact is also provided with inclined-plane, and this inclined-plane coordinates with the lower bevel of Switch main body and realizes squeezing action.
Described central tube is provided with positioning sleeve and connector, the upper end of described Switch main body is inserted in positioning sleeve, and lower end is then inserted in connector, and described central tube upper end is also connected with box cupling.
Described filling is overlapped inwall and is positioned at above and below filling mouth and offers upper and lower two grooves, and the elastic bunch pawl of this groove and filling sliding sleeve cooperatively interacts, and realizes the fixing of filling sliding sleeve.
Described filling mouth is more than or equal to filling sliding sleeve and two elastic bunch pawl height sums to the distance of lower grooves, and described filling mouth is less than or equal to filling sliding sleeve and an elastic bunch pawl height sum to the distance of upper grooves.
Described top connection lower end to top groove between distance equal the distance of boss to inclined-plane, Switch main body upper end of Switch main body, described lower contact upper end to below groove between distance equal the distance of boss to inclined-plane, Switch main body lower end of Switch main body.
Compared to prior art, the utility model has following beneficial effect:
The realization of the switch motion of this layering fracturing sand control filling switching tools is that a series of interior arrangements by being connected with internal oil pipe, the external device (ED) be connected with outside tubing string and filling sliding sleeve have cooperatively interacted.Wherein, external device (ED) comprise connect from top to bottom top connection, filling pipe, lower contact; Interior arrangement comprises the upper box cupling, central tube, Switch main body, connector and the positioning sleeve be threaded connection on central tube that connect and the Switch main body be sitting in by spring base on central tube from top to bottom.
This utility model adopts two-way sliding sleeve to design, and can realize separate stratum fracfturing filling anti-sand, simple to operate, safe and reliable; Strengthen the bearing capacity of switching tools in design, the requirement of the high pressure of separate stratum fracfturing filling anti-sand, high discharge capacity can be met, solve ordinary tap instrument and cannot bear elevated pressures and the problem led to the failure.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of layering fracturing sand control filling switching tools of the present utility model.
In figure: top connection 1, upper box cupling 2, central tube 3, positioning sleeve 4, Switch main body 5, support spring 6, filling pipe 7, filling sliding sleeve 8, filling mouth 9, connector 10, lower contact 11.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
According to Fig. 1, the functional realiey of layering fracturing sand control filling switching tools is that a series of interior arrangements by being connected with internal oil pipe, the external device (ED) be connected with the outer tubing string of fracturing outside filling and filling sliding sleeve 8 have cooperatively interacted.Wherein, external device (ED) comprise connect from top to bottom top connection 1, filling pipe 7, lower contact 11, between top connection 1 and filling pipe 7, and filling pipe 7 is all provided with sealing ring with lower contact 11, realizes sealing function; Interior arrangement comprises the upper box cupling 2, central tube 3, connector 10 and the Switch main body 5 that is fixed on the positioning sleeve 4 on central tube 3 by screw thread and is sitting in by spring base on central tube 3 that connect from top to bottom.
The bottom of top connection 1 is provided with inclined-plane, and this inclined-plane coordinates with the upper inclined surface of Switch main body 5 and realizes squeezing action.Equally, the top of lower contact 11 is also provided with inclined-plane, and this inclined-plane coordinates with the lower bevel of Switch main body 5 and realizes squeezing action.
Switch main body 5 is provided with several support spring 6, and the compression of this spring and expansion can realize disengaging and the screens of Switch main body 5 and sliding sleeve switch 8, and strengthen the bearing capacity of Switch main body.
Filling pipe 7 is provided with filling mouth 9, and this mouthful is for the circulation passage in stowing operation, and filling pipe 7 is also provided with upper and lower two grooves, the elastic bunch pawl of this groove and filling sliding sleeve 8 cooperatively interacts, and realizes the fixing of filling sliding sleeve 8.
Described filling mouth is more than or equal to filling sliding sleeve and two elastic bunch pawl height sums to the distance of lower grooves, and described filling mouth is less than or equal to filling sliding sleeve and an elastic bunch pawl height sum to the distance of upper grooves.
Described top connection lower end to top groove between distance equal the distance of boss to inclined-plane, Switch main body upper end of Switch main body, described lower contact upper end to below groove between distance equal the distance of boss to inclined-plane, Switch main body lower end of Switch main body.
Filling mouth closing process: above carry inner tubing string, the upper step of filling sliding sleeve 8 is blocked at the upper interface of described Switch main body 5 boss, due to the supporting role of support spring 6, Switch main body 5 drives filling sliding sleeve 8 up, when the upper inclined surface of Switch main body 5 arrives the incline position of top connection 1, be subject to the inclined-plane extruding of top connection 1, thus support spring 6 is compressed, when in continuation, the upper interface of trade Switch main body 5 arrives positioning sleeve locating interface, the upper interface of Switch main body 5 and the upper step of filling sliding sleeve 8 depart from, and interior realization of upper grooves that the elastic bunch pawl of filling sliding sleeve 8 is stuck in filling pipe 7 is fixed, now, filling mouth 9 is closed.
Filling mouth opening procedure: transfer inner tubing string, the lower step of filling sliding sleeve 8 is blocked at the lower interface of described Switch main body 5 boss, due to the supporting role of support spring 6, Switch main body 5 drives filling sliding sleeve 8 descending, when the lower bevel of Switch main body 5 arrives the incline position of lower contact 11, be subject to the inclined-plane extruding of lower contact 11, thus support spring 6 is compressed, continue descending, when the lower interface of Switch main body 5 arrives positioning sleeve locating interface, the lower interface of Switch main body 5 and the lower step of filling sliding sleeve 8 depart from, and, realize fixing in the lower recess that the elastic bunch pawl of filling sliding sleeve 8 is stuck in filling pipe 7, now, filling mouth 9 is opened.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (6)
1. a layering fracturing sand control filling switching tools, it is characterized in that, comprise filling pipe, filling sliding sleeve, central tube, Switch main body, described filling pipe inwall installs filling sliding sleeve, described central tube outer wall installs Switch main body, filling pipe is provided with filling mouth, the two ends of described filling sliding sleeve arrange elastic bunch pawl, described Switch main body outer wall arranges boss, the boss of this Switch main body is followed central tube and is moved up and down in filling pipe, thus coordinate the step on the elastic bunch pawl at the two ends of filling sliding sleeve to drive filling sliding sleeve to move axially respectively, realize the opening and closing of filling sliding sleeve to the filling mouth on filling pipe.
2. a kind of layering fracturing sand control filling switching tools according to claim 1, it is characterized in that, described Switch main body inwall is sitting on central tube by spring base and support spring, namely Switch main body energy resilient radial moves, described filling pipe upper and lower two ends screw thread type is connected to the outer wall of upper and lower joint, inclined-plane is all offered in the upper and lower two ends of Switch main body, and the bottom of top connection is provided with inclined-plane, and this inclined-plane coordinates with the upper inclined surface of Switch main body and realizes squeezing action; Equally, the top of lower contact is also provided with inclined-plane, and this inclined-plane coordinates with the lower bevel of Switch main body and realizes squeezing action.
3. a kind of layering fracturing sand control filling switching tools according to claim 2, it is characterized in that, described central tube is provided with positioning sleeve and connector, the upper end of described Switch main body is inserted in positioning sleeve, lower end is then inserted in connector, and described central tube upper end is also connected with box cupling.
4. a kind of layering fracturing sand control filling switching tools according to claim 2, it is characterized in that, described filling is overlapped inwall and is positioned at above and below filling mouth and offers upper and lower two grooves, and the elastic bunch pawl of this groove and filling sliding sleeve cooperatively interacts, and realizes the fixing of filling sliding sleeve.
5. a kind of layering fracturing sand control filling switching tools according to claim 4, it is characterized in that, described filling mouth is more than or equal to filling sliding sleeve and two elastic bunch pawl height sums to the distance of lower grooves, and described filling mouth is less than or equal to filling sliding sleeve and an elastic bunch pawl height sum to the distance of upper grooves.
6. a kind of layering fracturing sand control filling switching tools according to claim 4, it is characterized in that, described top connection lower end to top groove between distance equal the distance of boss to inclined-plane, Switch main body upper end of Switch main body, described lower contact upper end to below groove between distance equal the distance of boss to inclined-plane, Switch main body lower end of Switch main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520668439.1U CN205000946U (en) | 2015-08-31 | 2015-08-31 | Separate stratum fracfturing sand control fills switch instrument of using |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520668439.1U CN205000946U (en) | 2015-08-31 | 2015-08-31 | Separate stratum fracfturing sand control fills switch instrument of using |
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| Publication Number | Publication Date |
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| CN205000946U true CN205000946U (en) | 2016-01-27 |
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| CN201520668439.1U Active CN205000946U (en) | 2015-08-31 | 2015-08-31 | Separate stratum fracfturing sand control fills switch instrument of using |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781489A (en) * | 2016-04-20 | 2016-07-20 | 东营百华石油技术开发有限公司 | Switch device for preventing sand during filling outside sleeve |
-
2015
- 2015-08-31 CN CN201520668439.1U patent/CN205000946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781489A (en) * | 2016-04-20 | 2016-07-20 | 东营百华石油技术开发有限公司 | Switch device for preventing sand during filling outside sleeve |
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| C14 | Grant of patent or utility model | ||
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