CN204386546U - Novel current global mechanism area sliding sleeve switch - Google Patents
Novel current global mechanism area sliding sleeve switch Download PDFInfo
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- CN204386546U CN204386546U CN201420777779.3U CN201420777779U CN204386546U CN 204386546 U CN204386546 U CN 204386546U CN 201420777779 U CN201420777779 U CN 201420777779U CN 204386546 U CN204386546 U CN 204386546U
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Abstract
The utility model relates to the improvement of the sliding sleeve switch in hydraulic packer conventional in a kind of well stimulation operation, is novel current global mechanism area sliding sleeve switch.It by fittings body, steel ball, cut off and form with sliding sleeve, sliding sleeve is installed on fittings body inner chamber and fixing with cutting off, and steel ball is placed in sliding sleeve endoporus top; It is characterized in that sliding sleeve is three sections of Step Shaft nested structures, and epimere is connected with fittings body by cutting off, outer ring sleeve has sealing ring and fittings body inner chamber to realize sealing shearing function simultaneously; Interlude is processed with major cycle passage; Hypomere is shaped with groove as auxiliary circulation passage, also locates with circulating connection lower end inner hole and forms the crooked locating surface of anti-anti-skid sheath.The utility model forms the equivalent circulation area uniform circulation passage suitable with whole tubing string in sliding sleeve switch inside, makes cycle efficieny higher, and circulating effect is better, and considerably reduces the damaged condition of sliding sleeve switch.
Description
Technical field
The utility model belongs to crude oil and natural gas extraction equipment technical field, the improvement of the sliding sleeve switch in particularly conventional in various well stimulation operation hydraulic packer.
Background technology
Hydraulic packer is widely used in the various well stimulation operations such as pressure break, acidifying, separate stratum fracfturing, oil recovery, water filling, hydraulic packer setting in sleeve pipe must coordinate sliding sleeve switch to realize, and in order to form circulation canal after pitching is by packer setting, be more go out step in the fittings body indoor design of sliding sleeve switch, fall into down-hole to stop sliding sleeve and pitching.In order to make mud form circulation inside and outside tubing string, also can process end face groove in sliding sleeve lower end, so that in sliding sleeve and outside and fittings body inner chamber and sliding sleeve lower end formation circulation canal.
As shown in Figure 1-2, conventional sliding sleeve switch is in the middle part of circulating connection, process four circulation ports to concrete structure, and sliding sleeve bottom has four facing groove bottomly with it in tubing string can form circulation canal after making sliding sleeve shoot down.But fall behind when arriving below step in circulating connection hole and can be blocked under pitching and sliding sleeve, no matter be straight well, inclined shaft or horizontal well, sliding sleeve and pitching all can not stand upright on joint step, always there will be crooked, thus cause circulation canal not smooth or blocked by circulation canal, and can often cause sliding sleeve, pitching and circulating connection to be stung bad situation, not only affect operating efficiency, also can damage power tool.There is following problem in the structure design of this sliding sleeve switch:
1. fall into after in joint lower step both can not be upright for sliding sleeve, also can not keep being formed with joint internal cavities the gap that a uniform liquid passes through, and is usually all to skew, be inclined to cavity side.In cyclic process, circulation canal will be caused because sliding sleeve is crooked so not smooth or blocked by circulation canal, and often can cause situation bad by thorn in sliding sleeve, pitching and fittings body;
2. the circulation port of conventional sliding sleeve switch directly opens on body, and the circulating fluid flow that returns out from shaft bottom will be caused so inadequate, and most of water or mud all return out from the circulation port sliding sleeve switch, cause the impurity recycling in shaft bottom not go out well head.
Summary of the invention
1. goal of the invention
The utility model object is a kind of novel current global mechanism area sliding sleeve switch of design; to solve conventional sliding sleeve switch opening circulation port to the cavity place fallen in circulating connection; sliding sleeve is crooked and cause circulation canal not smooth or blocked by circulation canal; and often can cause situation bad by thorn in sliding sleeve, pitching and fittings body; and form an equivalent circulation area and the uniform circulation passage suitable with whole tubing string in sliding sleeve switch inside; make cycle efficieny higher; circulating effect is better, and considerably reduces the damaged condition of sliding sleeve switch.
2. technical scheme
Novel current global mechanism area sliding sleeve switch, by fittings body, steel ball, cuts off and forms with sliding sleeve, and sliding sleeve is installed on fittings body inner chamber and fixing with cutting off, and steel ball is placed in sliding sleeve endoporus top; It is characterized in that sliding sleeve is three sections of Step Shaft nested structures, and epimere is connected with fittings body by cutting off, outer ring sleeve has sealing ring and fittings body inner chamber to realize sealing shearing function simultaneously; Interlude is processed with major cycle passage; Hypomere is shaped with groove as auxiliary circulation passage, also locates with circulating connection lower end inner hole and forms the crooked locating surface of anti-anti-skid sheath.
The utility model mainly changes:
1. sliding sleeve is three stage structure: epimere is mainly sealing shearing function, and interlude is processed with major cycle passage, and lower end, not only with auxiliary circulation passage, is also located in case the crooked locating surface of anti-skid sheath with circulating connection lower end inner hole;
2. the design of sliding sleeve cocycle passage and circulating connection internal cavities size design ensure that the equivalent circulation area of sliding sleeve switch is identical complete alternation circulation area with sliding sleeve internal diameter;
3. eliminate the circulation port on circulating connection body, inner for pit shaft impurity and mud can be ensured to recycle well head completely.
The utility model Novel sliding sleeve switch makes sliding sleeve into three section Step Shaft nested structures without step, below with the structure of circulating slot by original, and on the Step Shaft of two sections, below, be all processed with four circulation ports, to ensure that in the process of going into the well and pitching shoot down sliding sleeve after can have a unimpeded circulation canal.In addition, shoot down in the process of sliding sleeve in pitching, when sliding sleeve upper end surface of shear is not also thrown off from its fitting face, sliding sleeve step has bottom entered into the hole of circulating connection lower end, and coordinates location good, ensures that sliding sleeve can not be crooked in circulating connection hole.Although the circulation canal at sliding sleeve central through hole place is blocked by pitching, but a gap uniformity, new circulation canal that circulation area is larger can be formed in the cavity in the middle part of circulating connection and four circulation ports on sliding sleeve middle bench.Circulation area in the equivalent circulation area of this circulation canal and whole tubing string is suitable.The anti-skew functionality of sliding sleeve of this special design structure well protects pitching, sliding sleeve and circulating connection and is not stung bad by high-pressure fluid, effectively improves cycle operation efficiency, reduces operating cost.
Because the design of new construction sliding sleeve ensure that sliding sleeve can form in sliding sleeve switch inside the circulation canal that an equivalent circulation area is current global mechanism area after being shot down, therefore, we eliminate the circulation port on circulating connection, mud can be made like this bottom tubing string, well head can be recycled completely, guarantee the impurity in pit shaft and mud to recycle well head completely.
Accompanying drawing explanation
Fig. 1 is conventional structure sliding sleeve switch schematic diagram,
Fig. 2 is that Fig. 1 sliding sleeve opens rear schematic diagram,
Fig. 3 is the utility model structural representation,
Fig. 4 is that Fig. 3 sliding sleeve opens rear schematic diagram.
Detailed description of the invention
The present invention's novel current global mechanism area sliding sleeve switch detailed construction is shown in shown in accompanying drawing 3-4.
Sliding sleeve adopts the design size of three sections of different-diameters:
First paragraph topmost to have the maximum gauge of sealing and shearing function, and this section and circulating connection cut off inner hole, not only seals that tubing string is interior prevents with annular space it inside and outsidely when normal operation to be communicated with, and cuts off the effect of pin after also playing pitching;
Second segment is interlude, it is processed with several circulation port, for after pitching and sliding sleeve are shot down, because of the circulation main channel in the middle of sliding sleeve blocked by pitching after in tubing string the upper and lower of pitching re-establish a new circulation canal, the circulation area design of this circulation canal is identical with sliding sleeve internal diameter;
3rd section is the circulation positioning section in bottom, this section of intended diameter is minimum, it also has several circulation port, for producing a circulation canal before non-pitching between the cavity of circulating connection and sliding sleeve endoporus, prevent from mud contamination precipitation appearring in splice cavity lower step and making sliding sleeve can not enter position, in addition, sliding sleeve lower end minor diameter also carries out coordinating with circulating connection lower end endoporus locates, when pitching shoots down that in the descending process of sliding sleeve, sliding sleeve top surface of shear is not also thrown off from circulating connection endoporus, minor diameter below sliding sleeve is introduced into circulating connection endoporus in advance, and to locate anti-anti-skid sheath in advance crooked, and in sliding sleeve outside with circulating connection endoporus endoporus, form a uniform circulation canal, not only ensure current global mechanism area, and it is bad to prevent instrument from being stung.
The utility model eliminates the circulation port on circulating connection body, because the design of new construction sliding sleeve ensure that sliding sleeve can form in sliding sleeve switch inside the circulation canal that an equivalent circulation area is current global mechanism area after being shot down, therefore, we eliminate the circulation port on circulating connection, mud can be made like this bottom tubing string, well head can be recycled completely, guarantee inner for pit shaft impurity and mud completely to circulate out.
The utility model implements rear remarkable in economical benefits:
The utility model current global mechanism area sliding sleeve switch is compared with conventional sliding sleeve switch and is had the following advantages:
(1) the circulation area of novel current global mechanism area sliding sleeve switch adds more than 50% than the circulation area of conventional sliding sleeve switch, and therefore, the cycle efficieny of mud also improves more than 50%.Calculate according to Tarim Oilfield 5000-7000 rice well depth, conventional sliding sleeve switch is used to carry out circulation time, the every circulation primary completely of mud in pit shaft approximately needs 4-5 hour, and use the every operation of novel current global mechanism area sliding sleeve switch once to carry out circulating and only need 3-4 hours, the activity duration of 1 hours can be saved.At Tarim Oilfield, carry out every year in well workover and completion practice, needing the well (secondary) carrying out mud circulation to be approximately 1000 mouthfuls (secondary) left and right, total can save hours circulation timei 1000, according to operating cost per hour 5000 yuan calculating, about 5,000,000 yuan can be saved production cost every year.
(2) use the operation of novel current global mechanism area sliding sleeve switch can reduce instrument use cost
Conventional sliding sleeve switch, due to the defect in structure design, can cause sliding sleeve and pitching are shot down rear easy blocking circulation canal and pitching, sliding sleeve and circulating connection are damaged.In general every operation 1 mouthful of well just needs to change pitching and sliding sleeve, and operation 4-6 mouth well just needs to change circulating connection body.In conventional sliding sleeve switch, the cost of every part pitching is 50 yuan, and the cost of every part sliding sleeve is 250 yuan, and the cost of every part circulating connection is about 2900 yuan.Then the tool expense of every operation 10 mouthfuls of wells is: 10*50+10*250+2900*10/5=8800 unit; According to novel current global mechanism area sliding sleeve switch, every operation 5 mouthfuls of wells just need to change pitching and sliding sleeve, and about operation 10 mouthfuls of wells need to change circulating connection body.In novel current global mechanism area sliding sleeve switch, the cost of every part pitching is 50 yuan, and the cost of every part sliding sleeve is 350 yuan, and the cost of every part circulating connection is about 3000 yuan.Then the tool expense of every operation 10 mouthfuls of wells is: 5*50+5*350+3000*10/10=5000 unit.Therefore, novel current global mechanism area sliding sleeve switch is adopted to replace old-fashioned structure sliding sleeve switch, every operation 10 mouthfuls of wells can reduce tool expense and be: 8800-5000=3800 unit, the Jing1000Kou of cycle operation is needed to calculate every year according to Tarim Oilfield, can save tool expense is altogether: 3800*1000/10=380000 unit, economic benefit is also very considerable.
Claims (2)
1. novel current global mechanism area sliding sleeve switch, by fittings body (1), steel ball (2), cut off (3) and sliding sleeve (4) is formed, sliding sleeve (4) is installed on fittings body (1) inner chamber and fixes with cutting off (3), and steel ball (2) is placed in sliding sleeve (4) endoporus top; It is characterized in that sliding sleeve (4) is three sections of Step Shaft nested structures, and epimere is connected with fittings body (1) by cutting off (3), outer ring sleeve has sealing ring and fittings body (1) inner chamber to realize sealing shearing function simultaneously; Interlude is processed with major cycle passage; Hypomere is shaped with groove as auxiliary circulation passage, also locates with circulating connection lower end inner hole and forms the crooked locating surface of anti-anti-skid sheath.
2. novel current global mechanism area sliding sleeve switch according to claim 1, is characterized in that sliding sleeve diameter reduces successively from epimere, interlude, hypomere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777779.3U CN204386546U (en) | 2014-12-10 | 2014-12-10 | Novel current global mechanism area sliding sleeve switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420777779.3U CN204386546U (en) | 2014-12-10 | 2014-12-10 | Novel current global mechanism area sliding sleeve switch |
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| CN204386546U true CN204386546U (en) | 2015-06-10 |
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| CN201420777779.3U Active CN204386546U (en) | 2014-12-10 | 2014-12-10 | Novel current global mechanism area sliding sleeve switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499987A (en) * | 2014-12-10 | 2015-04-08 | 宝鸡瑞通石油装备有限公司 | Novel full-flow area sliding sleeve switch |
| CN106761390A (en) * | 2015-11-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Pipe column |
| WO2020034364A1 (en) * | 2018-08-13 | 2020-02-20 | 四川大学 | Core drilling rig liquid channel starting mechanism |
-
2014
- 2014-12-10 CN CN201420777779.3U patent/CN204386546U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499987A (en) * | 2014-12-10 | 2015-04-08 | 宝鸡瑞通石油装备有限公司 | Novel full-flow area sliding sleeve switch |
| CN106761390A (en) * | 2015-11-19 | 2017-05-31 | 中国石油天然气股份有限公司 | Pipe column |
| WO2020034364A1 (en) * | 2018-08-13 | 2020-02-20 | 四川大学 | Core drilling rig liquid channel starting mechanism |
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Effective date of registration: 20201023 Address after: 721013 room 1203, block a, Star Diamond International, No.63, Gaoxin Avenue, high tech Development Zone, Baoji City, Shaanxi Province Patentee after: Baoji Ruitong Energy Technology Co.,Ltd. Address before: 721013 No. 89, hi tech Avenue, Shaanxi, Baoji Patentee before: BAOJI RUITONG OILFIELD MACHINERY Co.,Ltd. |