CN104060981A - Testing shaft for packers in multiple specifications - Google Patents
Testing shaft for packers in multiple specifications Download PDFInfo
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- CN104060981A CN104060981A CN201410281246.0A CN201410281246A CN104060981A CN 104060981 A CN104060981 A CN 104060981A CN 201410281246 A CN201410281246 A CN 201410281246A CN 104060981 A CN104060981 A CN 104060981A
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- packer
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- pressure ring
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Abstract
The invention relates to a testing shaft for packers in multiple specifications. The testing shaft comprises a barrel and a packer, wherein the barrel comprises a sealing head and a first threaded pressure ring; a crossover coupling is connected to the lower end of the sealing head, and is connected with the packer; a second threaded pressure ring screwed to the barrel is also arranged outside the first threaded pressure ring; a coupling is connected to the interior of the barrel at the lower end of the second threaded pressure ring, and is tightly pressed by the second threaded pressure ring; a groove is formed in the outer circle of the middle part of the coupling; a through hole penetrating through the center of the coupling is formed in the groove; an upper sealing groove is formed in the upper part of the groove; a lower sealing groove is formed in the lower part of the groove; a sleeve connector is connected to the lower end of the coupling; a sleeve is connected to the sleeve connector; the packer is arranged in the sleeve. According to the testing shaft for the packers in multiple specifications, sleeve connectors and sleeves in different specifications are connected through the internal coupling to realize simulation tests on the packers in different specifications.
Description
Technical field
The present invention relates to electromechanical equipment field, the experimental wwll cylinder in simulated test space is particularly provided with packer for the petroleum drilling and mining of certain specification, relate in particular to a kind of experimental wwll cylinder for many specifications packer.
Background technology
Experimental wwll cylinder is mainly the test space that simulation is provided for the petroleum drilling and mining packer of certain specification, when work, be aided with the supporting compression system of heating, realize the simulation to superhigh-pressure high-temp testing circumstance in down-hole in oil exploitation process, packer is carried out to relevant performance test.Domestic conventional method for designing is to design a sleeve body for the packer of every kind of specification at present, every sleeve body can only carry out simulated test to a kind of packer of specification, traditional test chamber as shown in Figure 1, packer 2 is directly placed in cylindrical shell 1, be connected on seal head 4 by crossover sub 3, the sealing surface of packer directly contacts with cylinder inboard wall, extruding, form epicoele and cavity of resorption in inner barrel, in this case, while completing the pressurization (flow direction as shown by arrows in FIG.) to epicoele or cavity of resorption, must respectively open in the upper and lower of cylindrical shell a hole, and because sealing surface is positioned on the black box outer wall of cylinder inboard wall and packer, therefore in the time that the specification of packer is different, its multipair cylinder internal diameter of answering is also different, the packer of different size must be joined the cylindrical shell of different size.Because the raw material of test cylindrical shell require highly, material price is higher, and experimental wwll cylinder cost of production is larger, and every kind of specification experimental wwll cylinder all needs design drawing, and required accessory is also different, causes the design cycle long, and the overall production cycle is long.
Therefore, invention, only with a kind of experimental wwll cylinder of specification, connects crossover sub and the sleeve pipe of different size by built-in box cupling, realize the experimental wwll cylinder device that the packer of different size is carried out to simulated test, has great market value.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art provides a kind of cover pipe connector and sleeve pipe by built-in box cupling connection different size to realize the experimental wwll cylinder for many specifications packer that the packer of different size is carried out to simulated test.
Technical scheme of the present invention is achieved in that a kind of experimental wwll cylinder for many specifications packer, comprise cylindrical shell and packer, described cylindrical shell comprises seal head and is arranged on the first threaded pressure ring outside seal head, described seal head lower end connects a crossover sub, described crossover sub is connected with described packer, described the first threaded pressure ring is also provided with the second threaded pressure ring screwing on cylindrical shell outward, the inner barrel of described the second threaded pressure ring lower end is connected with a connection coupling, described the second threaded pressure ring compresses described connection coupling, the outer ring at the middle part of described connection coupling is provided with groove, on described groove, offer a through hole through connection coupling center, the top of described groove is provided with seal groove, the bottom of described groove is provided with lower seal groove cavity, described box cupling lower end connects a set of pipe connector, on described cover pipe connector, be connected with sleeve pipe, described packer is placed in described sleeve pipe, on described cylindrical shell, offer the first pressurization hole and the second pressurization hole, through hole on described the first pressurization hole and described connection coupling connects, and the below that described the second pressurization hole is arranged on described connection coupling is led in the gap between described cylindrical shell and described cover pipe connector.
Upper seal groove, lower seal groove cavity on described connection coupling all and between cylinder inboard wall arrange sealing ring, by the oil circuit of inner barrel epicoele and cavity of resorption separately.
On described packer, be provided with sealing surface and lower sealing surface, described upper sealing surface and described lower sealing surface are all close to described sleeve pipe setting.
Described connection coupling upper end is polygonized structure, and this polygonized structure matches with the polygon of described inner barrel.
The junction of described cover pipe connector and described connection coupling is provided with two sealing rings.
The good effect that technical scheme of the present invention produces is as follows: in inner barrel, connection coupling is set, there is a groove at connection coupling middle part, in groove, have the through hole that leads to endoporus, groove respectively has two seals groove up and down, in the time of work, the oil circuit that enters epicoele and cavity of resorption can be separated; In process of the test, packer is placed in sleeve pipe, be connected on seal head by crossover sub, sleeve pipe is connected on connection coupling by cover pipe connector, in the time of epicoele entrance pressure, fluid enters in the groove of connection coupling by the pressurization of first on cylindrical shell hole, then enters epicoele by the through hole on groove; In the time of cavity of resorption entrance pressure, fluid enters cylinder body bottom by the connection coupling on cylindrical shell, then the through hole of the sleeve bottom of flowing through enters cavity of resorption, and its liquid flows as shown in the arrow on Fig. 2.In this structure, packer does not directly contact, pushes with cylinder inboard wall, form sealing surface but contact, push with the sleeve pipe of inner barrel or the inwall that adds rear pipe, therefore can be connected to cover pipe connector on connection coupling and change by replacing the sleeve pipe of different size in the time that the specification of packer is different, to meet the packer test requirements document of different size.
Experimental wwll cylinder of the present invention maximum difference compared with traditional experimental wwll cylinder is the box cupling structure of placing in inner barrel, and the major function of this structure has 3 points, the one, by the oil circuit that enters epicoele and cavity of resorption separately; The 2nd, the black box of packer is not no longer contacting with cylinder inboard wall at the trial, but contact with the internal surface of sleeve pipe being connected on connection coupling by cover pipe connector, this just makes in process of the test only by more casing replacing connector and sleeve pipe are realized the object that plurality of specifications packer is tested; The 3rd, the polygonized structure on connection coupling top matches with the polygon of inner barrel, and this makes during around axial rotation, to have prevented the and then possibility of rotation of connection coupling in inner barrel when packer, thereby realizes the leakage test of drawing, press, turning round of packer.
Brief description of the drawings
Fig. 1 is the structural representation of traditional single gauge experimental wwll cylinder.
Fig. 2 is the structural representation of the present invention for the experimental wwll cylinder of many specifications packer.
Fig. 3 is the main TV structure schematic diagram of connection coupling in the present invention.
Fig. 4 is the plan structure schematic diagram of connection coupling in the present invention.
Fig. 5 is the plan structure schematic diagram of connection coupling after docking with cylindrical shell in the present invention.
In figure, be labeled as: 1, cylindrical shell; 2, packer; 3, crossover sub; 4, seal head; 5, connection coupling; 501, groove; 502, through hole; 503, upper seal groove; 504, lower seal groove cavity; 6, the first threaded pressure ring; 7, the second threaded pressure ring; 8, cover pipe connector; 9, sleeve pipe; 10, sealing ring; 11, the first entrance pressure hole; 12, the second entrance pressure hole; 13, aperture; 14, upper sealing surface; 15, lower sealing surface.
Detailed description of the invention
A kind of experimental wwll cylinder for many specifications packer, as Fig. 1, 2, 3, 4, shown in 5, comprise cylindrical shell 1 and packer 2, described cylindrical shell comprises seal head 4 and is arranged on the first threaded pressure ring 6 outside seal head, described seal head lower end connects a crossover sub 3, described crossover sub is connected with described packer, described the first threaded pressure ring is also provided with the second threaded pressure ring 7 screwing on cylindrical shell outward, described the first threaded pressure ring screws press seal head on the second threaded pressure ring, the inner barrel of described the second threaded pressure ring lower end is connected with a connection coupling 5, described the second threaded pressure ring compresses described connection coupling, the outer ring at the middle part of described connection coupling is provided with groove 501, on described groove, offer a through hole 502 through connection coupling center, the top of described groove is provided with seal groove 503, the bottom of described groove is provided with lower seal groove cavity 504, described box cupling lower end connects a set of pipe connector 8, on described cover pipe connector, be connected with sleeve pipe 9, described packer is placed in described sleeve pipe, on described cylindrical shell, offer the first pressurization hole and the second pressurization hole, through hole on described the first pressurization hole and described connection coupling connects, and the below that described the second pressurization hole is arranged on described connection coupling is led in the gap between described cylindrical shell and described cover pipe connector.
Upper seal groove, lower seal groove cavity on described connection coupling all and between cylinder inboard wall arrange sealing ring 10, by the oil circuit of inner barrel epicoele and cavity of resorption separately.On described packer, be provided with sealing surface 14 and lower sealing surface 15, described upper sealing surface and described lower sealing surface are all close to described sleeve pipe setting.Described connection coupling upper end is polygonized structure, and this polygonized structure matches with the polygon of described inner barrel.The junction of described cover pipe connector and described connection coupling is provided with two sealing rings.
Place connection coupling in inner barrel, connection coupling structure as shown in Figure 3, top is polygon (can complete the twisting rotation test of packer), there is a groove at middle part, in groove, there is the through hole that leads to endoporus, groove respectively has upper seal groove and lower seal groove cavity up and down, in the time of work, the oil circuit that enters epicoele and cavity of resorption can be separated.In process of the test, packer is placed in sleeve pipe, be connected on seal head by crossover sub, sleeve pipe is connected on connection coupling by cover pipe connector, in the time of epicoele entrance pressure, fluid enters in the groove of connection coupling by the first entrance pressure hole on cylindrical shell, then enters epicoele by the through hole on groove.In the time of cavity of resorption entrance pressure, fluid enters cylinder body bottom by the second entrance pressure hole on cylindrical shell, then the through hole of flow through sleeve pipe or extra strong pipe bottom enters cavity of resorption.Its flow direction figure is as shown in the arrow on Fig. 2.In this structure, packer does not directly contact, pushes with cylinder inboard wall, form sealing surface but contact, push with the sleeve pipe of inner barrel or the inwall that adds rear pipe, therefore can be connected to cover pipe connector on box cupling and change by replacing sleeve pipe or the extra strong pipe of different size in the time that the specification of packer is different, to meet the packer test requirements document of different size.
The present invention is as follows for the technique of the test simulation of the experimental wwll cylinder of many specifications packer:
Step 1, by sleeve pipe be connected to cover pipe connector on;
Step 2, cover pipe connector are connected on connection coupling;
Step 3, sleeve pipe, cover pipe connector and connection coupling are positioned over to inner barrel;
Step 4, packer is connected on crossover sub;
Step 5, crossover sub is connected on seal head;
Step 6, by packer, special letter structure and seal first-class assembly and be placed in sleeve pipe and connection coupling inside;
Step 7, the second threaded pressure ring is screwed on cylindrical shell, compress connection coupling;
Step 8, the first threaded pressure ring is screwed to press seal head on the second threaded pressure ring;
Step 9, liquid enter packer inside by the centre bore of seal head, crossover sub and packer, and the black box of the packer that is expands, and contacts, and form epicoele and cavity of resorption therein with internal surface of sleeve pipe;
Step 10, by the first pressurization hole entrance pressure, liquid enters after the groove of connection coupling, enter successively seal head bottom, connection coupling, cover pipe connector and inside pipe casing by the through hole in groove, and form upper cavity pressure at this, be used for testing the sealing performance of packer top seal assembly, flow direction as shown by the arrows in Figure 2;
Step 11, by the second pressurization hole entrance pressure, liquid passes through below connection coupling lower seal groove cavity, enter cylinder body bottom, enter again the bottom of sleeve pipe by the aperture 13 of sleeve bottom, and form cavity of resorption at this, be used for testing the sealing performance of packer lower seal assembly, flow direction as shown by the arrows in Figure 2;
Step 12, repeat above step, change crossover sub, cover pipe connector and the sleeve pipe of different size the sealing performance of different size packer is tested.
Described sleeve pipe is existing standard part, and described cover pipe connector is the external member matching with sleeve pipe.
The packer of getting two kinds of different sizes is example explanation sleeve pipe and the specification of overlapping pipe connector:
When the specification of test packer is 5 " time, the internal diameter of sleeve pipe is that the wall thickness of φ 107(sleeve pipe is 10mm left and right), the screw thread specification being connected between cover pipe connector and sleeve pipe is 114-5-Stub Acme-LH, when the specification of test packer is 7-1/2 ", the wall thickness of the internal diameter φ 159.4(sleeve pipe of sleeve pipe is 10mm left and right), the screw thread specification being connected between cover pipe connector and sleeve pipe is 176-5-Stub Acme-LH, 176-5-Stub Acme-LH, be short pitch thread made in U.S.A, Major Diam is 176mm, per inch 5 teeth are left-handed, no matter be 5 " packer of specification or 7-1/2 " packer, something in common is to overlap the screw thread specification that pipe connector is connected with connection coupling and is 243-5-Stub Acme-LH, no matter the advantage of doing is like this packer of which kind of specification of test, only can realize by casing replacing connector more, and needn't change connection coupling, because any cover pipe connector can be connected with connection coupling, from difficulty of processing and processing cost, the cost of connection coupling is much larger than the cost of cover pipe connector, such setting is also in order better to reduce processing and use cost.
More than explanation only illustrates with regard to 5 " and 7-1/2 ", in fact user can or manufacture the cover pipe connector of multiple different size according to the actual outside diameter size design of measured workpiece, the specification that only changes connecting thread between the internal diameter of sleeve pipe and cover pipe connector and sleeve pipe just can realize easily, the specification of connecting thread or connected mode user can designed, designed or Commission Design unit root design respectively according to actual conditions, above example is only a kind of embodiment, and is not limited to this kind of mode.
In addition, the sleeve pipe in the present embodiment also can replace by extra strong pipe, all can realize good effect of the present invention.
Claims (5)
1. the experimental wwll cylinder for many specifications packer, comprise cylindrical shell and packer, described cylindrical shell comprises seal head and is arranged on the first threaded pressure ring outside seal head, described seal head lower end connects a crossover sub, described crossover sub is connected with described packer, it is characterized in that: described the first threaded pressure ring is also provided with the second threaded pressure ring screwing on cylindrical shell outward, the inner barrel of described the second threaded pressure ring lower end is connected with a connection coupling, described the second threaded pressure ring compresses described connection coupling, the outer ring at the middle part of described connection coupling is provided with groove, on described groove, offer a through hole through connection coupling center, the top of described groove is provided with seal groove, the bottom of described groove is provided with lower seal groove cavity, described box cupling lower end connects a set of pipe connector, on described cover pipe connector, be connected with sleeve pipe, described packer is placed in described sleeve pipe, on described cylindrical shell, offer the first pressurization hole and the second pressurization hole, through hole on described the first pressurization hole and described connection coupling connects, and the below that described the second pressurization hole is arranged on described connection coupling is led in the gap between described cylindrical shell and described cover pipe connector.
2. a kind of experimental wwll cylinder for many specifications packer as claimed in claim 1, is characterized in that: upper seal groove, lower seal groove cavity on described connection coupling all and between cylinder inboard wall arrange sealing ring, by the oil circuit of inner barrel epicoele and cavity of resorption separately.
3. a kind of experimental wwll cylinder for many specifications packer as claimed in claim 1, is characterized in that: on described packer, be provided with sealing surface and lower sealing surface, described upper sealing surface and described lower sealing surface are all close to described sleeve pipe setting.
4. a kind of experimental wwll cylinder for many specifications packer as claimed in claim 1, is characterized in that: described connection coupling upper end is polygonized structure, this polygonized structure matches with the polygon of described inner barrel.
5. a kind of experimental wwll cylinder for many specifications packer as claimed in claim 1, is characterized in that: the junction of described cover pipe connector and described connection coupling is provided with two sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281246.0A CN104060981B (en) | 2014-06-23 | 2014-06-23 | Testing shaft for packers in multiple specifications |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410281246.0A CN104060981B (en) | 2014-06-23 | 2014-06-23 | Testing shaft for packers in multiple specifications |
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| CN104060981A true CN104060981A (en) | 2014-09-24 |
| CN104060981B CN104060981B (en) | 2017-01-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157963A (en) * | 2015-07-03 | 2015-12-16 | 北京建筑大学 | Seal-type autoclave for testing self-expansion packer |
| CN106319629A (en) * | 2016-09-19 | 2017-01-11 | 中原特钢股份有限公司 | Ultra-high pressure container for producing gallium nitride crystal |
| CN107489394A (en) * | 2017-08-15 | 2017-12-19 | 中国石油天然气股份有限公司 | A kind of three oval experimental provision of open hole packer |
| CN109025905A (en) * | 2018-10-13 | 2018-12-18 | 中石化石油工程技术服务有限公司 | High temperature and pressure test pit shaft circulation temperature lowering sealing container |
| CN109296355A (en) * | 2018-11-30 | 2019-02-01 | 成都托克密封件有限责任公司 | A kind of high temperature and pressure downhole tool rapid simulated test well |
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| US4771633A (en) * | 1986-07-29 | 1988-09-20 | Merip Oil Tools International S.A. | Cell for testing the sealing quality of an oil-well safety-valve, a testing process and valve for use therein |
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| CN101994509A (en) * | 2010-10-22 | 2011-03-30 | 武汉海王机电工程技术公司 | Multipurpose ultrahigh-pressure packer tester |
| CN202928792U (en) * | 2012-11-26 | 2013-05-08 | 中国石油集团渤海钻探工程有限公司 | Multifunctional packer testing apparatus |
| CN203961947U (en) * | 2014-06-23 | 2014-11-26 | 中原特钢股份有限公司 | A kind of experimental wwll cylinder for many specifications packer |
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2014
- 2014-06-23 CN CN201410281246.0A patent/CN104060981B/en active Active
Patent Citations (5)
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| US4771633A (en) * | 1986-07-29 | 1988-09-20 | Merip Oil Tools International S.A. | Cell for testing the sealing quality of an oil-well safety-valve, a testing process and valve for use therein |
| RU2236543C2 (en) * | 2003-05-20 | 2004-09-20 | Общество с ограниченной ответственностью "АЛ" | System for pressure testing operation columns |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157963A (en) * | 2015-07-03 | 2015-12-16 | 北京建筑大学 | Seal-type autoclave for testing self-expansion packer |
| CN105157963B (en) * | 2015-07-03 | 2017-10-20 | 北京建筑大学 | A kind of sealed autoclave tested Self-expandable packer |
| CN106319629A (en) * | 2016-09-19 | 2017-01-11 | 中原特钢股份有限公司 | Ultra-high pressure container for producing gallium nitride crystal |
| CN107489394A (en) * | 2017-08-15 | 2017-12-19 | 中国石油天然气股份有限公司 | A kind of three oval experimental provision of open hole packer |
| CN109025905A (en) * | 2018-10-13 | 2018-12-18 | 中石化石油工程技术服务有限公司 | High temperature and pressure test pit shaft circulation temperature lowering sealing container |
| CN109296355A (en) * | 2018-11-30 | 2019-02-01 | 成都托克密封件有限责任公司 | A kind of high temperature and pressure downhole tool rapid simulated test well |
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| Publication number | Publication date |
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| CN104060981B (en) | 2017-01-18 |
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Effective date of registration: 20180803 Address after: 459000 531 Industrial Park, Tiger Hill Industrial Cluster, Jiyuan City, Jiaozuo, Henan Patentee after: Henan Zhongyuan special steel equipment manufacturing Co., Ltd. Address before: 459000 Xiao Zhai, Jiyuan Town, Jiyuan City, Henan Patentee before: Zhongyuan Special Steel Co., Ltd. |
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