CN204266977U - A kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation - Google Patents
A kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation Download PDFInfo
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- CN204266977U CN204266977U CN201420692838.7U CN201420692838U CN204266977U CN 204266977 U CN204266977 U CN 204266977U CN 201420692838 U CN201420692838 U CN 201420692838U CN 204266977 U CN204266977 U CN 204266977U
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Abstract
The utility model discloses a kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation, it comprises: the top connection (1) that screw thread connects successively, central tube (7), lower center tube (26) and lower contact (43), central tube (7) outside is provided with exterior central tube (10), the top and bottom of exterior central tube (10) are threaded pressure cap (4) and lower rubber cylinder seat (21) respectively, on exterior central tube (10) periphery, cover has upper dummy piston (5), lower dummy piston (13), lower balance set (9), upper glue tube base (14), packing element shoulder protector (16), limit packing element (17), middle packing element (19), the top and bottom of lower balance set (9) are threaded upper balance set (3) and upper glue tube base (14) respectively, and central tube (7) lower end cover has setting piston (24) and lower center tube (26).This Packer for blocking water, reasonable in design, effectively can realize Inter-zonal packing, and packing pressure reduction is large, and safety is good.
Description
Technical field
The utility model relates to a kind of oilfield exploitation instrument, especially relates to oilfield horizontal well, high angle hole shutoff, pressure break, acidifying, looks for packer needed for the working measure such as water blockoff, formation testing.
Background technology
Along with the fast development of economic technology, oilfield exploitation obtains and develops rapidly, oilfield exploitation many employings horizontal well, directed high angle hole.Packer for blocking water of the prior art, because structure design is unreasonable, when oilfield horizontal well, high angle hole onsite application, be easily impacted in way of going into the well, resistance of becoming silted up, Ka Dun and the shear pin that fractures produce midway packing element and expand and set, make construction failure, bring very large inconvenience to construction.
Therefore, on the basis of existing technology necessary, designing a kind of reasonable in design, there is lower tubular column safe and reliable, not easily producing tool failures accident when going into the well, and packing is effective, deblocking power is little, has both adapted to the requirement of conventional well construction operation, again applicable horizontal well, the requirement of high angle hole construction operation, improve efficiency of construction, reduce the setting Packer for blocking water in the anti-midway of self-locking of the oilfield exploitation of accident risk.
Summary of the invention
Goal of the invention: the purpose of this utility model be Packer for blocking water in order to solve prior art in horizontal well, directed high angle hole use, the easily setting and shortcoming that deblocking power is large in midway.One is provided to have into well safety, packing is effective, deblocking power is little, not only can adapt to the requirement of conventional straight well construction operation, applicable horizontal well, the requirement of high angle hole construction operation again, efficiency of construction is high, can ensure working security, reduce the setting Packer for blocking water in the anti-midway of self-locking of the oilfield exploitation of accident risk, the model of the setting Packer for blocking water in the anti-midway of this self-locking is PH-FZY341.
Technical scheme: in order to realize above object, technical solution adopted in the utility model is:
The setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation, it comprises: the top connection connected successively by screw thread, central tube, lower center tube and lower contact, described central tube outside is provided with exterior central tube, the lower end of exterior central tube has been threaded lower rubber cylinder seat, the threaded upper ends of exterior central tube is connected with pressure cap, and cover has upper dummy piston on exterior central tube periphery, lower dummy piston, lower balance set, upper glue tube base, packing element shoulder protector, limit packing element, spacer ring, middle packing element, described lower balance set lower end and upper glue tube base are threaded connection, lower balance set upper end is threaded with upper balance set, upper balance set and top connection are threaded connection, on central tube lower end, cover has setting piston and lower center tube, on lower center tube, cover has upper piston to overlap and lower setting piston, upper piston set upper side is threaded with lower rubber cylinder seat, upper piston cover lower end is connected with lower piston external threading,
In described lower contact, cover has lock ring, lock tube and shear pin seat, and support ring is fixed in lower contact by deblocking shear pin, and lower piston cover is connected with lock tube screw thread, and shear pin seat is connected with lower contact by screw thread.
Preferably, the setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, is fixed by setting shear pin between described lock tube and shear pin seat.
Preferably, the setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, described spacer ring is between limit packing element and middle packing element.
Preferably, the setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, is provided with sealing ring between described top connection and upper balance set.
Preferably, the setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, is provided with sealing ring between described lower balance set and exterior central tube.
Preferably, the setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, described lower center tube and upper piston overlap and be all provided with sealing ring between lower setting pistons.
The horizontal well of the oilfield exploitation that the utility model provides, the setting Packer for blocking water in the anti-midway of highly declined deep well self-locking, in the principle that packer top connection, central tube, lower center tube and lower contact part adopt taper thread to be combined, go into the well work time be in combination seal, meet packer properties, and packing part is supported by retaining mechanism, dummy piston offsets annulus pressure to the power of separating sealing mechanism generation, ensure that packer packing is every effect, and deblocking shear pin can be made to cut off after reaching design deblocking pulling force, removing seal for packer.
Beneficial effect: compared to the prior art horizontal well, the setting Packer for blocking water in the anti-midway of highly declined deep well self-locking of the oilfield exploitation that the utility model provides have the following advantages:
The horizontal well of oilfield exploitation described in the utility model, the setting Packer for blocking water in the anti-midway of highly declined deep well self-locking, reasonable in design, easy to operate, effectively can realize Inter-zonal packing, packing pressure reduction is large, and when running string, can effectively prevent packer to be impacted, mud becomes silted up resistance, casing clamp pauses and go into the well setting in advance in way, ensure construction safety, reduce accident risk.
And this horizontal well, the setting Packer for blocking water in the anti-midway of highly declined deep well self-locking are compared with the Packer for blocking water of prior art, packing effect is more obvious, packing pressure reduction is large, and deblocking is light when lift pipe string, deblocking power can remain at about 60 ~ 80KN (and the packer that prior art uses not easily deblocking or not deblocking), be conducive to on-the-spot conventional construction operation, reduce on-the-spot because of deblocking difficulty, accident risk in packing element fines left well, thus height of can increasing work efficiency, overcome many deficiencies of prior art.
Accompanying drawing explanation
The structural representation of the setting Packer for blocking water in the anti-midway of self-locking of the oilfield exploitation that Fig. 1 provides for the utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
As shown in Figure 1, a kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation, it comprises: the top connection (1) connected successively by screw thread, central tube (7), lower center tube (26) and lower contact (43), described central tube (7) outside is provided with exterior central tube (10), the lower end of exterior central tube (10) has been threaded lower rubber cylinder seat (21), the threaded upper ends of exterior central tube (10) is connected with pressure cap (4), and cover has upper dummy piston (5) on exterior central tube (10) periphery, lower dummy piston (13), lower balance set (9), upper glue tube base (14), packing element shoulder protector (16), limit packing element (17), spacer ring (18), middle packing element (19), described lower balance set (9) lower end and upper glue tube base (14) are threaded connection, lower balance set (9) upper end is threaded with upper balance set (3), upper balance set (3) and top connection (1) are threaded connection, on central tube (7) lower end, cover has setting piston (24) and lower center tube (26), the upper cover of lower center tube (26) has upper piston cover (27) and lower setting piston (30), upper piston cover (27) upper end is threaded with lower rubber cylinder seat (21), upper piston cover (27) lower end is threaded with lower piston cover (39), lower setting piston (30) passes through
safe shear pin is fixed on lower piston cover (39),
The upper cover of described lower contact (43) has lock ring (36), lock tube (40) and shear pin seat (42), support ring (37) is fixed in lower contact (43) by deblocking shear pin (38), lower piston cover (39) is connected with lock tube (40) screw thread, and shear pin seat (42) is connected with lower contact (43) by screw thread.
The setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, is fixed by setting shear pin (41) between described lock tube (40) and shear pin seat (42).
The setting Packer for blocking water in the anti-midway of self-locking of above-described oilfield exploitation, described spacer ring (18) is arranged between limit packing element (17) and packing element (19).
The setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation described in the utility model, between described top connection (1) and upper balance set (3), sealing ring is installed, between described lower balance set (9) and exterior central tube (10), sealing ring is installed.Described lower center tube (26) and be all provided with sealing ring between upper piston cover (27) and lower setting piston (30).
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. the setting Packer for blocking water in the anti-midway of the self-locking of oilfield exploitation, it is characterized in that, it comprises: the top connection (1) connected successively by screw thread, central tube (7), lower center tube (26) and lower contact (43), described central tube (7) outside is provided with exterior central tube (10), the lower end of exterior central tube (10) has been threaded lower rubber cylinder seat (21), the threaded upper ends of exterior central tube (10) is connected with pressure cap (4), and cover has upper dummy piston (5) on exterior central tube (10) periphery, lower dummy piston (13), lower balance set (9), upper glue tube base (14), packing element shoulder protector (16), limit packing element (17), spacer ring (18), middle packing element (19), described lower balance set (9) lower end and upper glue tube base (14) are threaded connection, lower balance set (9) upper end is threaded with upper balance set (3), upper balance set (3) and top connection (1) are threaded connection, on central tube (7) lower end, cover has setting piston (24) and lower center tube (26), the upper cover of lower center tube (26) has upper piston cover (27) and lower setting piston (30), upper piston cover (27) upper end is threaded with lower rubber cylinder seat (21), upper piston cover (27) lower end is threaded with lower piston cover (39), lower setting piston (30) is fixed on lower piston cover (39) by safe shear pin,
The upper cover of described lower contact (43) has lock ring (36), lock tube (40) and shear pin seat (42), support ring (37) is fixed in lower contact (43) by deblocking shear pin (38), lower piston cover (39) is connected with lock tube (40) screw thread, and shear pin seat (42) is connected with lower contact (43) by screw thread.
2. the setting Packer for blocking water in the anti-midway of the self-locking of oilfield exploitation according to claim 1, is characterized in that, is fixed between described lock tube (40) and shear pin seat (42) by setting shear pin (41).
3. the setting Packer for blocking water in the anti-midway of the self-locking of oilfield exploitation according to claim 1, is characterized in that, described spacer ring (18) is arranged between limit packing element (17) and packing element (19).
4. the setting Packer for blocking water in the anti-midway of self-locking of the oilfield exploitation according to any one of claims 1 to 3, is characterized in that, is provided with sealing ring between described top connection (1) and upper balance set (3).
5. the setting Packer for blocking water in the anti-midway of the self-locking of oilfield exploitation according to claim 4, is characterized in that, is provided with sealing ring between described lower balance set (9) and exterior central tube (10).
6. the setting Packer for blocking water in the anti-midway of the self-locking of oilfield exploitation according to claim 5, is characterized in that, described lower center tube (26) and be all provided with sealing ring between upper piston cover (27) and lower setting piston (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420692838.7U CN204266977U (en) | 2014-11-18 | 2014-11-18 | A kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420692838.7U CN204266977U (en) | 2014-11-18 | 2014-11-18 | A kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation |
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| Publication Number | Publication Date |
|---|---|
| CN204266977U true CN204266977U (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420692838.7U Active CN204266977U (en) | 2014-11-18 | 2014-11-18 | A kind of setting Packer for blocking water in the anti-midway of self-locking of oilfield exploitation |
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| CN (1) | CN204266977U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915632A (en) * | 2018-07-10 | 2018-11-30 | 盐城市森鑫石油机械有限公司 | A kind of structure of Packer for blocking water and combinations thereof mounting process |
-
2014
- 2014-11-18 CN CN201420692838.7U patent/CN204266977U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915632A (en) * | 2018-07-10 | 2018-11-30 | 盐城市森鑫石油机械有限公司 | A kind of structure of Packer for blocking water and combinations thereof mounting process |
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| GR01 | Patent grant |