CN204024594U - Horizontal cementing is used can switch fracturing sliding bush construction pipe string - Google Patents
Horizontal cementing is used can switch fracturing sliding bush construction pipe string Download PDFInfo
- Publication number
- CN204024594U CN204024594U CN201420499627.1U CN201420499627U CN204024594U CN 204024594 U CN204024594 U CN 204024594U CN 201420499627 U CN201420499627 U CN 201420499627U CN 204024594 U CN204024594 U CN 204024594U
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- China
- Prior art keywords
- sliding sleeve
- housing
- urceolus
- fracturing
- sliding bush
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Abstract
The utility model discloses a kind of horizontal cementing with can switch fracturing sliding bush construction pipe string, it is characterized in that: comprise a plurality of fracturing sliding bushs that connect by oil pipe successively, the switching tools with the corresponding setting of each fracturing sliding bush, pressure reduction sliding sleeve, float collar and hold up footwear, wherein: described fracturing sliding bush comprises top connection, urceolus and the lower contact being threaded successively, in urceolus inner side, inner sliding sleeve is installed, described switching tools comprises housing, baffle ring, control ball, ball seat and locking cap.Construction pipe string in the utility model can carry out after-treatment after can realizing multistage pressure break, pressure break.
Description
Technical field
The utility model relates to oil drilling equipment field, and in particular to a kind of horizontal cementing, using can switch fracturing sliding bush construction pipe string.
Background technology
In fractured horizontal well technology, bore hole staged fracturing is that completion tool and fracturing tool are together lowered to, adopt the instrument G.I.Hs such as bidirectionally anchoring hanging packer, expanding open hole packer, ball-throwing type sand blast sliding sleeve, differential pressure open sliding sleeve and setting ball seat, use open hole packer packing horizontal segment, realize the laterally selective staged isolation of fracturing work well section, according to pressure break hop count, carry out staged fracturing, can realize the complete fracturing work of full well section.By oil-gas Layer is optionally transformed, thereby realize the object that improves well yield.This technology short construction period, but limited by sliding sleeve size and interior latus rectum, and pressure break hop count is limited, after pressure, cannot carry out after-treatment.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of horizontal cementing that can carry out after-treatment after multistage pressure break, pressure break can realized with can switch fracturing sliding bush construction pipe string.
Therefore, the technical solution of the utility model is as follows:
Horizontal cementing with can switch fracturing sliding bush a construction pipe string, it is characterized in that: comprise a plurality of fracturing sliding bushs that connect by oil pipe successively, the switching tools with the corresponding setting of each fracturing sliding bush, pressure reduction sliding sleeve, float collar and hold up footwear, wherein:
Described fracturing sliding bush comprises top connection, urceolus and the lower contact being threaded successively, in urceolus inner side, inner sliding sleeve is installed, on described urceolus, be provided with a plurality of spray-holes, on the inwall of described inner sliding sleeve, be provided with at least one annular switch groove, described inner sliding sleeve is when closed condition, its upper end withstands in described top connection, blocks described spray-hole, and the outer wall at the two ends of described inner sliding sleeve forms and seals respectively and between described top connection and the inwall of described urceolus; Described inner sliding sleeve is fixed by cutting off with described urceolus, the lower end of described inner sliding sleeve is also provided with the stopping means being fixedly connected with described inner sliding sleeve, on the inwall of described urceolus, be provided with stopper slot, when described inner sliding sleeve is opened completely, described stopping means coordinates with described stopper slot, and described inner sliding sleeve is fixed;
Described switching tools comprises housing, baffle ring, control ball, ball seat and locking cap, described housing is a cylinder, described ball seat comprises two semicircular cylinders that match of installing in described housing, the external diameter of described ball seat is less than the internal diameter of described housing, described locking cap is arranged on the lower end of described housing, the lower end of described semicircular cylinder is connected to described locking cap by a locating ring, on the outer wall of described semicircular cylinder, be provided with at least one positioning tooth, on described housing, have the through hole corresponding with each positioning tooth, a plurality of back-moving springs in extended state are all installed between each semicircular cylinder and described housing, for impelling described positioning tooth through corresponding through hole and stretching out outside described housing, the upper end inwall of described ball seat forms an inner conical surface coordinating with described control ball, described baffle ring is arranged on the upper end of described housing by screw thread, for described control ball is limited between described baffle ring and described inner conical surface, and described control ball can be along described inner conical surface axially-movable between described baffle ring and described inner conical surface.
Described stopping means is jump ring or claw type locking device.Described spray-hole place is filled with the filler that prevents that it from being blocked when well cementation.At least one sealing ring is installed on the outer wall of described housing.
Fracturing sliding bush in the utility model, can realize switching function by being lowered to the switching tools matching with switch groove; Stopping means adopts claw type locking device or jump ring, simple in structure, uses reliably, can effectively prevent closing of sliding sleeve in manufacturing process; When filler can prevent from cementing the well, spray-hole is dead; Fracturing reform hop count is unrestricted; During pressing crack construction, drop into the opener corresponding with sliding sleeve and also can realize the unlatching of sliding sleeve.
Accompanying drawing explanation
Fig. 1 is the structural representation with the fracturing sliding bush in can switch fracturing sliding bush construction pipe string according to the horizontal cementing of the utility model embodiment;
Fig. 2 is the structural representation with the switching tools in can switch fracturing sliding bush construction pipe string according to the horizontal cementing of the utility model embodiment;
Fig. 3 and Fig. 4 be fracturing sliding bush in Fig. 1 and the switching tools in Fig. 2 while coordinating at the schematic diagram of closing with open mode;
Fig. 5 is according to structural representation that can switch fracturing sliding bush construction pipe string for the horizontal cementing of the utility model embodiment.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, according to the horizontal cementing of embodiment of the present utility model with can switch fracturing sliding bush construction pipe string, it is characterized in that: comprise a plurality of fracturing sliding bushs that connect by oil pipe 92 successively 91, the switching tools with the corresponding setting of each fracturing sliding bush 91, pressure reduction sliding sleeve 93, float collar 94 and hold up footwear 95, wherein:
Described fracturing sliding bush comprises top connection 1, urceolus 2 and the lower contact 5 being threaded successively, in urceolus 2 inner sides, inner sliding sleeve 4 is installed, on described urceolus 2, be provided with a plurality of spray-holes, on the inwall of described inner sliding sleeve 4, be provided with at least one annular switch groove 7, described inner sliding sleeve 4 is when closed condition, its upper end withstands in described top connection 1, blocks described spray-hole, and the outer wall at the two ends of described inner sliding sleeve 4 forms and seals respectively and between described top connection 1 and the inwall of described urceolus 2; Described inner sliding sleeve 4 is fixing with described urceolus 2 by cutting off 6, the lower end of described inner sliding sleeve 4 is also provided with the stopping means 8 being fixedly connected with described inner sliding sleeve 4, on the inwall of described urceolus 2, be provided with stopper slot 22, when described inner sliding sleeve 4 is opened completely, described stopping means 8 coordinates with described stopper slot 22, makes described inner sliding sleeve 4 fixing;
Described switching tools comprises housing 11, baffle ring 12, control ball 13, ball seat 14 and locking cap 15, described housing 11 is a cylinder, described ball seat 14 comprises two semicircular cylinders that match of installing in described housing 11, the external diameter of described ball seat 14 is less than the internal diameter of described housing 11, described locking cap 15 is arranged on the lower end of described housing 11, the lower end of described semicircular cylinder is connected to described locking cap 15 by a locating ring 16, on the outer wall of described semicircular cylinder, be provided with at least one positioning tooth 17, on described housing 11, have the through hole corresponding with each positioning tooth 17, a plurality of back-moving springs 18 in extended state are all installed between each semicircular cylinder and described housing 11, for impelling described positioning tooth 17 through corresponding through hole and stretching out outside described housing 11, the upper end inwall of described ball seat 14 forms an inner conical surface 19 coordinating with described control ball 13, described baffle ring 12 is arranged on the upper end of described housing 11 by screw thread, for described control ball 13 is limited between described baffle ring 12 and described inner conical surface 19, and described control ball 13 can be along described inner conical surface 19 axially-movables between described baffle ring 12 and described inner conical surface 19.
Wherein, stopping means 8 can be jump ring or claw type locking device; Can also be filled with at spray-hole place the filler 3 for preventing that it from being blocked while cementing the well, for example one deck elastomeric material, can prevent that spray-hole is blocked fixedly time, and after inner sliding sleeve 4 is opened, fracturing fluid can be washed filler 3 open again, does not affect subsequent job.
Fracturing sliding bush in the utility model, can realize switching function by being lowered to the switching tools matching with switch groove 7; Stopping means 8 adopts claw type locking device or jump rings, simple in structure, uses reliably, can effectively prevent closing of sliding sleeve in manufacturing process; When filler 3 can prevent from cementing the well, spray-hole is dead; Fracturing reform hop count is unrestricted; During pressing crack construction, drop into the opener corresponding with sliding sleeve and also can realize the unlatching of sliding sleeve.
During operation, fracturing sliding bush, switching tools are lowered to together with sleeve pipe, casing cementing, drops into the unlatching that the opener matching with it is realized sliding sleeve, after unlatching, by stopping means, locks, and after assurance construction finishes, sliding sleeve can not closed in process of production.
In the utility model, adopt the switching tools corresponding with this fracturing sliding bush, as shown in Figure 2, described switching tools concrete structure can be as follows: horizontal cementing comprises housing 11, baffle ring 12, controls ball 13, ball seat 14 and locking cap 15 with switching tools with switch fracturing sliding bush, wherein: housing 11 is a cylinder, ball seat 14 comprises the semicircular cylinder matching in two holder housings 11, the external diameter of ball seat 14 is less than the internal diameter of housing 11, locking cap 15 is arranged on the lower end of housing 11, and the lower end of semicircular cylinder is connected to locking cap 15 by a locating ring 16; On the outer wall of semicircular cylinder, be provided with at least one positioning tooth 17, on housing 11, have the through hole corresponding with each positioning tooth 17, between each semicircular cylinder and housing 11, be all provided with a plurality of in extended state back-moving spring 18, for impelling positioning tooth 17 to stretch out outside housing 11 through corresponding through hole; The upper end inwall of ball seat 14 forms an inner conical surface 19 coordinating with control ball 13, baffle ring 12 is arranged on the upper end of housing 11 by screw thread, for control ball 13 is limited between baffle ring 12 and inner conical surface 19, and described control ball 13 can be between described baffle ring 12 and described inner conical surface 19 along the axially-movable of described inner conical surface 19.In addition, in order to guarantee better sealing, at least one sealing ring 20 is installed on the outer wall of housing 11.
This switching tools matches with the fracturing sliding bush in the utility model, as shown in Figure 3 and Figure 4, positioning tooth 17 in switching tools matches with the switch groove 7 on fracturing sliding bush, in sleeve pipe, suppress by controlling ball 13 compressing ball seats 14, when pressure is enough large, cutting off 6 cuts off, inner sliding sleeve 4 is descending, and fracturing sliding bush is opened; Inner sliding sleeve 4 comes downwards to spray-hole open completely after, it is locked that stopping means 8 and stopper slot 22 coordinate inner sliding sleeve 4, prevents that it from surprisingly closing; After pressure break finishes, oil gas promotes to control ball 13 and gets out of the way production passage, does not affect normal production operation; When needs are closed fracturing sliding bush, first bore except controlling ball 13, be lowered to corresponding instrument and sleeve pipe (existing in prior art) and upwards mention inner sliding sleeve, stopping means 8 is pulled out to stopper slot 22, can also when producing switching tools, adopt the material that can degrade in fracturing fluid, in fracturing fluid, be rich in chlorion, so can adopt the metal material such as magnesium, aluminium, after fracturing sliding bush is opened, switching tools is degraded gradually in fracturing fluid, realizes the full-bore of pit shaft, can realize secondary operation.
During concrete operations, horizontal cementing in the utility model can switch fracturing sliding bush, according to different pressure break hop counts, the sliding sleeve that is lowered to respective numbers (guarantees the specification of switch groove of the sliding sleeve of every layer, quantity is different, correspondingly the switching tools of this layer also has respective amount, the tooth of specification, can guarantee like this to open different locks with different keys, while making switching tools be lowered into corresponding layer, could cross and realize teeth groove cooperation, guarantee carrying out smoothly of operation), sliding sleeve is lowered to together with sleeve pipe, casing cementing, drop into the switching tools that matches with it, opener arrives behind precalculated position, positioning tooth 17 stretches under the effect of back-moving spring 18 that to enter switch groove 7 after housing 11 interior stuck, continue to suppress, cut off and cut off 6 unlatchings that realize fracturing sliding bush.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within this embodiment is included in scope of the present utility model.
Claims (4)
1. a horizontal cementing is with can switch fracturing sliding bush construction pipe string, it is characterized in that: comprise a plurality of fracturing sliding bushs (91) that connect by oil pipe (92) successively, switching tools, pressure reduction sliding sleeve (93), float collar (94) with the corresponding setting of each fracturing sliding bush (91) and hold up footwear (95), wherein:
Described fracturing sliding bush comprises top connection (1), urceolus (2) and the lower contact (5) being threaded successively, in urceolus (2) inner side, inner sliding sleeve (4) is installed, described urceolus is provided with a plurality of spray-holes on (2), on the inwall of described inner sliding sleeve (4), be provided with at least one annular switch groove (7), described inner sliding sleeve (4) is when closed condition, its upper end withstands in described top connection (1), block described spray-hole, the outer wall at the two ends of described inner sliding sleeve (4) forms and seals respectively and between described top connection (1) and the inwall of described urceolus (2); Described inner sliding sleeve (4) is fixing with described urceolus (2) by cutting off (6), the lower end of described inner sliding sleeve (4) is also provided with the stopping means (8) being fixedly connected with described inner sliding sleeve (4), on the inwall of described urceolus (2), be provided with stopper slot (22), when described inner sliding sleeve (4) is opened completely, described stopping means (8) coordinates with described stopper slot (22), makes described inner sliding sleeve (4) fixing;
Described switching tools comprises housing (11), baffle ring (12), control ball (13), ball seat (14) and locking cap (15), described housing (11) is a cylinder, described ball seat (14) comprises two semicircular cylinders that match of installing in described housing (11), the external diameter of described ball seat (14) is less than the internal diameter of described housing (11), described locking cap (15) is arranged on the lower end of described housing (11), the lower end of described semicircular cylinder is connected to described locking cap (15) by a locating ring (16), on the outer wall of described semicircular cylinder, be provided with at least one positioning tooth (17), on described housing (11), have the through hole corresponding with each positioning tooth (17), a plurality of back-moving springs (18) in extended state are all installed between each semicircular cylinder and described housing (11), be used for impelling described positioning tooth (17) through corresponding through hole and stretch out outside described housing (11), the upper end inwall of described ball seat (14) forms an inner conical surface (19) coordinating with described control ball (13), described baffle ring (12) is arranged on the upper end of described housing (11) by screw thread, for described control ball (13) is limited between described baffle ring (12) and described inner conical surface (19), and described control ball (13) can be along described inner conical surface (19) axially-movable between described baffle ring (12) and described inner conical surface (19).
2. horizontal cementing according to claim 1, with can switch fracturing sliding bush construction pipe string, is characterized in that, described stopping means (8) is jump ring or claw type locking device.
3. horizontal cementing according to claim 1 and 2, with can switch fracturing sliding bush construction pipe string, is characterized in that, described spray-hole place is filled with the filler (3) that prevents that it from being blocked when well cementation.
4. horizontal cementing according to claim 1 and 2, with can switch fracturing sliding bush construction pipe string, is characterized in that, at least one sealing ring (20) is installed on the outer wall of described housing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420499627.1U CN204024594U (en) | 2014-09-01 | 2014-09-01 | Horizontal cementing is used can switch fracturing sliding bush construction pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420499627.1U CN204024594U (en) | 2014-09-01 | 2014-09-01 | Horizontal cementing is used can switch fracturing sliding bush construction pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024594U true CN204024594U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420499627.1U Expired - Fee Related CN204024594U (en) | 2014-09-01 | 2014-09-01 | Horizontal cementing is used can switch fracturing sliding bush construction pipe string |
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| CN (1) | CN204024594U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895529A (en) * | 2015-06-09 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Underseal opening type full-bore cementing sliding sleeve |
| CN105672943A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Full-bore sliding sleeve with soluble structures |
| CN105822274A (en) * | 2015-01-09 | 2016-08-03 | 中国石油天然气股份有限公司 | Horizontal well process pipe column |
| CN105986780A (en) * | 2015-02-15 | 2016-10-05 | 赵华 | Permanent type plug-control sand blasting slide sleeve, fracturing string and plug-control staged fracturing technique |
| CN113006750A (en) * | 2021-03-17 | 2021-06-22 | 西北大学 | Construction tool and method for improving recovery ratio of low-permeability reservoir horizontal well |
-
2014
- 2014-09-01 CN CN201420499627.1U patent/CN204024594U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822274A (en) * | 2015-01-09 | 2016-08-03 | 中国石油天然气股份有限公司 | Horizontal well process pipe column |
| CN105986780A (en) * | 2015-02-15 | 2016-10-05 | 赵华 | Permanent type plug-control sand blasting slide sleeve, fracturing string and plug-control staged fracturing technique |
| CN104895529A (en) * | 2015-06-09 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Underseal opening type full-bore cementing sliding sleeve |
| CN105672943A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Full-bore sliding sleeve with soluble structures |
| CN105672943B (en) * | 2016-01-20 | 2018-07-10 | 中国石油化工股份有限公司 | A kind of full-bore sliding sleeve with solvable solution structure |
| CN113006750A (en) * | 2021-03-17 | 2021-06-22 | 西北大学 | Construction tool and method for improving recovery ratio of low-permeability reservoir horizontal well |
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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: 20141217 Termination date: 20160901 |