CN202970607U - Casing deformation well high-temperature resistant dual-rubber-sleeve water plugging packer - Google Patents
Casing deformation well high-temperature resistant dual-rubber-sleeve water plugging packer Download PDFInfo
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- CN202970607U CN202970607U CN201220523663.8U CN201220523663U CN202970607U CN 202970607 U CN202970607 U CN 202970607U CN 201220523663 U CN201220523663 U CN 201220523663U CN 202970607 U CN202970607 U CN 202970607U
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Abstract
The utility model discloses a casing deformation well high-temperature resistant dual-rubber-sleeve water plugging packer which comprises an upper joint, an inner central pipe, an outer central pipe, two rubber sleeves, a locking mechanism, two balancing mechanisms, an unsealing mechanism and a lower joint; the two ends of the inner central pipe are fixedly connected with the upper joint and the lower joint respectively; the outer central pipe is arranged outside the inner central pipe and is sleeved with the two rubber sleeves which comprises a first rubber sleeve and a second rubber sleeve; a spacing ring is arranged between the two rubber sleeves; and the locking mechanism, the two balancing mechanism and the unsealing mechanism are arranged at the upper parts of the first rubber sleeve and the second rubber sleeve. The utility model solves the problem that the conventional casing deformation packer can not be unsealed, or the unsealing load is high.
Description
Technical field
The utility model relates to a kind of water plugging packer of casing deformation well, especially designs high temperature resistant pair of packing element Packer for blocking water of a kind of casing deformation well.
Background technology
Along with the Liaohe Oil Field casing deformation well is more and more, the casing deformation well packer is widely used can, but existing cover becomes not deblocking or the deblocking load is large, heatproof is less than 120 degree of packer ubiquity, and internal diameter is little be Ф 50mm, can not meet on-the-spot Ф 57 tubing pump plunger requirements.
Chinese patent 02289779 has been announced " a kind of compressing type small diameter packer " and has been belonged to a kind of downhole packing instrument that is used for casing deformation well when separated-zone water infection oil field.It has mainly solved packing element problem sealing life, its regulator site is designed to one, only has an adjusted ring 2, and central tube 5 is designed to one, and only has one set piston 9.Retaining ring 11 surfaces externally and internallies have the sawtooth button, are connected with central tube 5 and lock sleeve 13 saw-tooth threads respectively, and retaining ring 11 has an opening.The advantages such as it is mainly used in the separated-zone water infection oil field well, has to reduce costs, and shortens tool length, and is easy to assembly.
Chinese patent 99207096 has been announced " a kind of Novel small diameter compression packer " and has been related to oil field layered production technique field, oil sets annular space for packing external diameter 90mm or less casing deformation well, the upper lower rubber cylinder of this packer vulcanizes respectively reinforcing rib, support set is the bushing pipe that moves about, the tensioner ring surfaces externally and internally has the sawtooth padlock tight, it is mainly used in oil field conventional cannula distortion or is lowered to the separate zone production of reinforcing pipe well, the scope of application of this packer has enlarged, and save 1/3 of original material, reduced cost.
Chinese patent 87215084 has been announced " compression type small diameter sealing isolator " compression type small diameter sealing isolator, belongs to distortion well downhole packing instrument on the oil field.It has solved on existing packer packing element and has improved turnup under differential pressure action, the technical problem such as break.Technical characterictic is to put upper and lower frustum ring body on middle packing element and between upper and lower packing element, and upper and lower packing element another end is cone, coordinates with umbrella shape hole in upper and lower spacer ring body respectively.Its structure: the formations such as upper and lower joint, adjustable ring, upper, upper isolating ring, upper, upper packing element, central tube, middle packing element, jump ring ring, pressure-bearing joint, seating nipple, upper and lower piston, nut and seal.It is large that this packer bears pressure reduction, packing element not turnup, break, the packing performance is good, the time limit is long.Chinese patent 03260089.5 discloses a kind of Packer for blocking water of oil well casing---compression type small diameter water blocking packer.it is by lower contact, packing element, central tube, piston, ball-and-seat, spacing ring, overcoat, inner central tube and top connection form, packing element is arranged on the upper surface of the external surface of central tube and lower contact, the piston of annular is arranged on the upper surface of the external surface of central tube and packing element, the top of the external surface upper piston of central tube is disposed with ball-and-seat and spacing ring, overcoat is enclosed within piston, the outside of ball-and-seat and spacing ring, spacing ring is divided into upper annular space and lower annular space to the annular space between central tube and overcoat, the spool of ball-and-seat gets lodged in the lower end of the inlet opening on the spacing ring end face.Just can complete the work of setting owing to only needing water flowing to press, so operation is very easy to, be not easy failure to occur setting, thereby ball-and-seat does not allow aqueous reflux guarantee that sealing is reliable.The utlity model has the advantage of rational in infrastructure, simple to operate and easy promotion and implementation.Chinese patent 03260523.4 has been announced " minor diameter expanding type fracturing packer ", and it relates to the fracturing tool that uses on a kind of oil field in the fracture in oil and water wells process.Present packer is badly damaged for sleeve pipe, and the maximum diameter of deformation place can't carry out fracturing reform less than the oil-water well of 113mm.The utility model is provided with pilot passage (5) in the matching part upper end of central tube (1) and pilot top connection (2), the lower end of pilot passage (5) is provided with pilot circular hole (6), be provided with pilot groove (7) on the sidewall of the central tube (1) of pilot circular hole (6) lower end, the length of pilot groove (7) extends to the length of whole packing element (4).Structure of the present utility model is compared with packer in the past, maximum outside diameter narrows down to 100mm by 113mm, this packer is worked in Ф 140 sleeve pipes, maximum operating pressure differential can reach 50MPa～60MPa, has realized the fracturing reform that carries out to the interior oil-water well of latus rectum between 100mm～113mm after casing failure.
Chinese patent 201020520259.6 has been announced " a kind of oil well high temperature-resistant over pumping Packer for blocking water " and has been related to a kind of downhole tool for the use of thickened oil recovery oil well, a kind of high temperature-resistant over pumping Packer for blocking water particularly, damage water outlet and the low situation of oil well liquid level for super heavy oil wells oil reservoir upper sleeve expansion loop, coordinate the high temperature-resistant over pumping anchor packer use when blocking water layer can so that pump by under packer near oil reservoir, mix thin oil by the oil sets annular space between packer and pump line, well-flushing, survey the conventional measures such as producing fluid level, guarantee the normal production of such oil well.This packer setting is reliable, and interior latus rectum is Ф 100.3mm, reaches packer and crosses the pump requirement, simultaneously on conventional oil resistant rubber basis, by optimizing components with add and improve heatproof and reach 160 ℃.
Conventional 7 " the compression cover becomes Packer for blocking water; its external diameter is Ф 131-Ф 140mm; internal diameter is Ф 50mm, and heatproof adopts 3 groups of seals less than 120 ℃; the deblocking load is in 10-15 ton left and right; for super viscous crude 7 " casing deformation well, after steam injection, reservoir temperature reaches 130-150 ℃, and the deblocking load is large, heat resistance is poor, and can not meet Ф 57 tubing pump plungers commonly used and be lowered to.
The utility model content
The technical problem that the utility model solves is to provide high temperature resistant pair of packing element Packer for blocking water of a kind of casing deformation well, solves conventional cover change packer and has not deblocking or the large problem of deblocking load.
Technical solution of the present utility model is:
A kind of casing deformation well is high temperature resistant pair packing element Packer for blocking water, wherein, described packer comprise top connection, inner central tube, exterior central tube, two packing elements, retaining mechanism, two balanced controls, one separate sealing mechanism and lower contact;
Described inner central tube two ends are fixedly connected with respectively described top connection and lower contact, described exterior central tube is located at outside described inner central tube, its outside is arranged with two described packing elements, comprise the first packing element and the second packing element, be provided with spacer ring between two described packing elements, described the first packing element and the second packing element top are provided with a retaining mechanism, two balanced controls and one and separate sealing mechanism.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, wherein, described packing element is circulus, and its medial surface is concaved with annular groove, this annular groove is that a cross section has towards the dovetail groove of the enlarging at described packing element center and the composite slot of arc groove, and described arc groove is positioned at the top of described dovetail groove.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water wherein, is provided with the elastic metallic ring between the annular groove of described packing element and described exterior central tube.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water wherein, when described packing element is not compressed, is provided with a spacing distance between this elastic metallic ring and this packing element.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, wherein, described elastic metallic ring is one to have the steel loop in circular arc type cross section, and described circular section top and the corresponding in the same way setting of described circular arc conduit.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, wherein, described packing element is for to be made by butadiene acrylonitrile rubber, octylated diphenylamine and filling carbon fiber nanotube.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, wherein, the internal diameter of described packer is 60mm, its external diameter is provided with Ф 131mm, Ф 133mm and three kinds of specifications of Ф 136mm.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water wherein, is provided with described retaining mechanism and balanced controls between described top connection and described the first packing element;
The described top connection outside is connected with a lock sleeve, the other end of this lock sleeve be connected with the connector that is connected with described inner central tube, and the other end of described connector is supported an end of described exterior central tube; The other end of described connector and the arranged outside that is positioned at described exterior central tube have connecting ring, and the described connecting ring other end and a cylinder sleeve are supported setting, and described lock sleeve is connected with described cylinder sleeve;
Be provided with first piston between the other end inboard of described cylinder sleeve and described exterior central tube, this piston is supported the first paragraph of a gasket ring, and the described gasket ring other end contacts with described the first packing element first end; Be provided with spacer ring between described the first packing element and the second packing element, the second end and an adjustable ring of described the second packing element are supported setting, this adjustable ring other end is connected with an end of a fluid cylinder, be provided with the second piston in this fluid cylinder and between described central tube, the other end of this fluid cylinder and the 3rd piston are supported setting, the other end of the 3rd piston is provided with described lower contact, is connected with lower fluid cylinder overcoat outside described lower contact and described adjustable ring;
Be positioned near being respectively equipped with liquid injection hole on the described central tube of the first end of described first piston and the second piston and exterior central tube wall; Center tube wall near described the 3rd piston other end is provided with liquid injection hole.
High temperature resistant pair of packing element Packer for blocking water of a kind of casing deformation well of utility model, after super heavy oil wells oil reservoir upper sleeve distortion, conventional cover becomes packer, has not deblocking or the deblocking load is large, heatproof is low and can not satisfy the problems such as Ф 57mm tubing pump plunger commonly used is lowered to and develop.
The utility model is by improving packer construction, adopt 2 groups of seal configurations, deblocking load reduction 1/3 is optimized the packing element composition, doses high temperature additive on conventional packing element basis, heatproof reaches 160 ℃, simultaneously structure is improved, made its internal diameter reach Ф 60mm, satisfied Ф 57 tubing pump plungers commonly used and be lowered to, this packer has realized that external diameter is Ф 131mm, Ф 133mm, three series of Ф 136mm, satisfies on-the-spot different cover and becomes the undergauge requirement.
Description of drawings
Fig. 1 is high temperature resistant pair of packing element Packer for blocking water schematic diagram of casing deformation well of the present utility model;
Fig. 2 is the part cross-sectional schematic of the better embodiment of packing element of the present utility model.
The critical element label declaration:
1, top connection 2, inner central tube 3, lock sleeve
4, connector 5, connecting ring 6, exterior central tube
7, cylinder sleeve 8, first piston 9, gasket ring
10, packing element 11, spacer ring 12, packing element
13, adjustable ring 14, fluid cylinder 15, the second piston
16, the 3rd piston 17, lower fluid cylinder overcoat 18, lower contact
19, metal ring 20, trough for composite trough body
The specific embodiment
High temperature resistant pair of packing element Packer for blocking water of a kind of casing deformation well of the present utility model, comprise top connection, inner central tube, exterior central tube, two packing elements, retaining mechanism, two balanced controls, one separate sealing mechanism and lower contact; Described inner central tube two ends are fixedly connected with respectively described top connection and lower contact, described exterior central tube is located at outside described inner central tube, its outside is arranged with two described packing elements, comprise the first packing element and the second packing element, be provided with spacer ring between two described packing elements, described the first packing element and the second packing element top are provided with a retaining mechanism, two balanced controls and one and separate sealing mechanism.
A kind of high temperature resistant cover that is applicable to super viscous crude cover change water producer of the utility model development becomes Packer for blocking water, after super heavy oil wells oil reservoir upper sleeve distortion, conventional cover becomes packer, has not deblocking or the deblocking load is large, heatproof is low and can not satisfy the problems such as Ф 57mm tubing pump plunger commonly used is lowered to and develop.It adopts the packer construction of two packing elements to realize deblocking effect preferably.
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
Please refer to Fig. 1 to shown in Figure 2, be the structural representation of high temperature resistant pair of packing element Packer for blocking water of a kind of casing deformation well of the present utility model preferred embodiment.
As shown in the figure, high temperature resistant pair of packing element Packer for blocking water of a kind of casing deformation well of the present utility model, better, described packer comprise top connection 1, inner central tube 2, exterior central tube 6, two packing elements, retaining mechanism, two balanced controls, one separate sealing mechanism and lower contact 18.Described inner central tube 2 two ends are fixedly connected with respectively described top connection 1 and lower contact 18, described exterior central tube 6 is located at described inner central tube 2 outsides, its outside is arranged with two described packing elements, comprise the first packing element 10 and the second packing element 12, be provided with spacer ring 11 between two described packing elements, described the first packing element 10 and the second packing element 12 tops are provided with a retaining mechanism, two balanced controls and one and separate sealing mechanism.
In addition, more specifically, as shown in Figure 1, be provided with described retaining mechanism and balanced controls between described top connection 1 and described the first packing element 10; Top connection 1 outside is connected with a lock sleeve 3, the other end of this lock sleeve 3 be connected with the connector 4 that is connected with described inner central tube 2, and the other end of described connector 4 is supported an end of described exterior central tube 6; The other end of described connector 4 and the arranged outside that is positioned at described exterior central tube 6 have connecting ring 5, and described connecting ring 5 other ends and a cylinder sleeve 7 are supported setting, and described lock sleeve 3 is connected with described cylinder sleeve 7; Be provided with first piston 8 between the other end inboard of described cylinder sleeve 7 and described exterior central tube 6, this piston is supported the first paragraph of a gasket ring 9, and described gasket ring 9 other ends contact with described the first packing element 10 first ends; Be provided with spacer ring 11 between described the first packing element 10 and the second packing element 12, the second end of described the second packing element 12 and an adjustable ring 13 are supported setting, these adjustable ring 13 other ends are connected with an end of a fluid cylinder 14, be provided with the second piston 15 in this fluid cylinder 14 and between described central tube, the other end of this fluid cylinder 14 and the 3rd piston 16 are supported setting, the other end of the 3rd piston 16 is provided with described lower contact 18, and described lower contact 18 is connected with lower fluid cylinder overcoat 17 with described adjustable ring 13 outsides; Be respectively equipped with liquid injection hole on the described central tube of the first end of close described first piston 8 and the second piston 15 and exterior central tube 6 walls; Also be provided with liquid injection hole near on the center tube wall of described the 3rd piston 16 other ends.Whereby, by to the highly pressurised liquid of annotating in two fluid injection cylinders, thereby two packing elements are compressed, make packing element outwards outstanding and support the sleeve pipe inboard, realize effective water blockoff packing.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, better, described packing element is circulus, its medial surface is concaved with annular groove, this annular groove is that a cross section has towards the dovetail groove of the enlarging at described packing element center and the composite slot of arc groove, and described arc groove is positioned at the top of described dovetail groove.As shown in Figure 2, in better embodiment, exterior central tube 6 outer surfaces shown in the packing element medial surface of this ring-type is close to, and this packing element middle inside is concaved with annular groove, strengthened the deformability of packing element, made packing element better and the interior side contacts of sleeve pipe, packing gets tightr.And described annular groove is one to have the annular groove of composite construction, is that both sides are the dovetail groove of tapered plane near the cell body of described exterior central tube 6, and is positioned at the groove that offers an arc on this dovetail groove along minor face, is combined into a trough for composite trough body 20 with the dovetail groove of its lower end.The structure of this trough for composite trough body 20 through evidence, can effectively reduce the outwards required compressive force of expansion of packing element compared to the structure of existing common cell body, reduces by 1/4.Make this packer packing more flexible every operation.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, better, be provided with elastic metallic ring 19 between the annular groove of described packing element and described exterior central tube 6.Packing element barrel after groove is processed as above is thinner, for avoiding compressing compression shape and the sealing effectiveness that inequality has been destroyed packing element, therefore at the inner elastic metallic ring 19 of placing of trough for composite trough body 20, after compression packing element certain distance, elastic metallic ring 19 is stressed, and packing element is evenly compressed.
Further, casing deformation well as above is high temperature resistant pair packing element Packer for blocking water, better, when described packing element is not compressed, be provided with a spacing distance between this elastic metallic ring 19 and this packing element.By the setting of this setpoint distance, can make packing element compress protection by metal ring 19 again after completing a certain amount of compressive strain, make it to take into account expansion efficiency and the structural safety of packing element.
As shown in the figure, more specifically, above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, better, described elastic metallic ring 19 is one to have the steel loop in circular arc type cross section, and described circular section top and the corresponding in the same way setting of described circular arc conduit.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, wherein, the internal diameter of described packer is 60mm, its external diameter is provided with Ф 131mm, Ф 133mm and three kinds of specifications of Ф 136mm.Its internal diameter is the setting of 60mm, has satisfied Ф 57 tubing pump plungers commonly used and has been lowered to, and simultaneously, its external diameter is provided with three kinds of specifications, can satisfy the demand that on-the-spot different cover becomes undergauge.
Above-mentioned casing deformation well is high temperature resistant pair packing element Packer for blocking water, better, described packing element is for to be made by butadiene acrylonitrile rubber, octylated diphenylamine and filling carbon fiber nanotube.At present in 150 ℃ of heatproofs packing element oil field, main employing cyaniding fourth is fine, price comparison is high, be octyl group=aniline and filling carbon fiber nanotube and the utility model preferably adds certain proportion novel high-performance age resistor ODPA on conventional butadiene acrylonitrile rubber basis, evidence rubber shore a hardness is 95 degree, hot strength is 35MPa, tearing strength is 93kN/m, and 150 ℃ * 72h compression set is 25%.Packing element under simulation well in duty (diesel oil, 150 ℃) test seal pressure differential be 30MPa.After 6 fatigue tests, the packing element state is intact, and oil resistant, withstand voltage and sealing performance satisfy instructions for use.
in an above-mentioned preferred embodiment, in order to satisfy super viscous crude 7 " casing deformation wells, after steam injection, reservoir temperature reaches 130-150 ℃, the deblocking load is large, and the demand that is lowered to of Ф 57 tubing pump plungers commonly used, the utility model is by improving packer construction, adopt two groups of seal configurations, the deblocking load is compared existing three packing element Structure Decreasings 1/3, the packing element composition is optimized, dose high temperature additive on conventional packing element basis, heatproof reaches 160 ℃, simultaneously structure is improved, make its internal diameter reach Ф 60mm, having satisfied Ф 57 tubing pump plungers commonly used is lowered to, this packer has realized that external diameter is Ф 131mm, Ф 133mm, three kinds of specifications of Ф 136mm, satisfy on-the-spot different cover and become the undergauge requirement.
Use the conventional water blockoff of Y341 and cover in this embodiment and become Packer for blocking water locking and balanced controls.Proposed two packing element sealing means and packing element composition, structure, hardness have been optimized.Guarantee to cross in packing element sealing, pressure-bearing index and packer Ф 57 tubing pump plungers under high-temperature condition.
The deblocking load is low.Main Means is compared with existing packer three packing elements for adopting two packing elements, and between sleeve pipe, contact area reduces by 1/3, therefore, and frictional force and deblocking load reduction 1/3.
The above is only the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (7)
1. high temperature resistant pair of packing element Packer for blocking water of a casing deformation well, is characterized in that, described packer comprise top connection, inner central tube, exterior central tube, two packing elements, retaining mechanism, two balanced controls, one separate sealing mechanism and lower contact;
Described inner central tube two ends are fixedly connected with respectively described top connection and lower contact, described exterior central tube is located at outside described inner central tube, its outside is arranged with two described packing elements, comprise the first packing element and the second packing element, be provided with spacer ring between two described packing elements, described the first packing element and the second packing element top are provided with a retaining mechanism, two balanced controls and one and separate sealing mechanism.
2. high temperature resistant pair of packing element Packer for blocking water of casing deformation well as claimed in claim 1, it is characterized in that, described packing element is circulus, its medial surface is concaved with annular groove, this annular groove is that a cross section has towards the dovetail groove of the enlarging at described packing element center and the composite slot of arc groove, and described arc groove is positioned at the top of described dovetail groove.
3. high temperature resistant pair of packing element Packer for blocking water of casing deformation well as claimed in claim 2, is characterized in that, is provided with the elastic metallic ring between the annular groove of described packing element and described exterior central tube.
4. high temperature resistant pair of packing element Packer for blocking water of casing deformation well as claimed in claim 3, is characterized in that, when described packing element is not compressed, is provided with a spacing distance between this elastic metallic ring and this packing element.
5. high temperature resistant pair of packing element Packer for blocking water of casing deformation well as described in claim 3 or 4, is characterized in that, described elastic metallic ring is one to have the steel loop in circular arc type cross section, and described circular section top and the corresponding in the same way setting of described circular arc conduit.
6. high temperature resistant pair of packing element Packer for blocking water of casing deformation well as claimed in claim 1, is characterized in that, the internal diameter of described packer is 60mm, and its external diameter is provided with Φ 131mm, Φ 133mm and three kinds of specifications of Φ 136mm.
7. high temperature resistant pair of packing element Packer for blocking water of casing deformation well as claimed in claim 1, is characterized in that, is provided with described retaining mechanism and balanced controls between described top connection and described the first packing element;
The described top connection outside is connected with a lock sleeve, the other end of this lock sleeve be connected with the connector that is connected with described inner central tube, and the other end of described connector is supported an end of described exterior central tube; The other end of described connector and the arranged outside that is positioned at described exterior central tube have connecting ring, and the described connecting ring other end and a cylinder sleeve are supported setting, and described lock sleeve is connected with described cylinder sleeve;
Be provided with first piston between the other end inboard of described cylinder sleeve and described exterior central tube, this piston is supported the first paragraph of a gasket ring, and the described gasket ring other end contacts with described the first packing element first end; Be provided with spacer ring between described the first packing element and the second packing element, the second end and an adjustable ring of described the second packing element are supported setting, this adjustable ring other end is connected with an end of a fluid cylinder, be provided with the second piston in this fluid cylinder and between described central tube, the other end of this fluid cylinder and the 3rd piston are supported setting, the other end of the 3rd piston is provided with described lower contact, is connected with lower fluid cylinder overcoat outside described lower contact and described adjustable ring;
Be positioned near being respectively equipped with liquid injection hole on the described central tube of the first end of described first piston and the second piston and exterior central tube wall; Center tube wall near described the 3rd piston other end is provided with liquid injection hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220523663.8U CN202970607U (en) | 2012-10-12 | 2012-10-12 | Casing deformation well high-temperature resistant dual-rubber-sleeve water plugging packer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220523663.8U CN202970607U (en) | 2012-10-12 | 2012-10-12 | Casing deformation well high-temperature resistant dual-rubber-sleeve water plugging packer |
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| CN202970607U true CN202970607U (en) | 2013-06-05 |
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| CN201220523663.8U Expired - Fee Related CN202970607U (en) | 2012-10-12 | 2012-10-12 | Casing deformation well high-temperature resistant dual-rubber-sleeve water plugging packer |
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| CN104594808A (en) * | 2014-11-28 | 2015-05-06 | 浙江歌瑞新材料有限公司 | Positive displacement motor drill stator manufactured through PFA and modified PFA applied to stator |
| CN106522871A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Open hole packer |
| CN106522907A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Salvageable thermal production well pipe string and application method thereof |
| CN107420065A (en) * | 2017-05-08 | 2017-12-01 | 西安石油大学 | A kind of elastic packing element of intelligence and preparation method thereof |
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN112709556A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Rapid well completion pipe string for offshore oilfield water injection well and construction method |
| CN112709557A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Safe and long-acting water injection string for offshore oil field and construction method |
| CN112709555A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Efficient separate-prevention separate-injection tubular column for water injection well and construction method |
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104594808A (en) * | 2014-11-28 | 2015-05-06 | 浙江歌瑞新材料有限公司 | Positive displacement motor drill stator manufactured through PFA and modified PFA applied to stator |
| CN104594808B (en) * | 2014-11-28 | 2017-06-13 | 浙江歌瑞新材料有限公司 | A kind of screw drilling tool stator that use PFA makes and the modified PFA for being applied to the stator |
| CN106522871A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Open hole packer |
| CN106522907A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Salvageable thermal production well pipe string and application method thereof |
| CN107420065A (en) * | 2017-05-08 | 2017-12-01 | 西安石油大学 | A kind of elastic packing element of intelligence and preparation method thereof |
| CN107420065B (en) * | 2017-05-08 | 2023-08-11 | 西安石油大学 | Intelligent elastic rubber cylinder and preparation method thereof |
| CN112709556A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Rapid well completion pipe string for offshore oilfield water injection well and construction method |
| CN112709557A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Safe and long-acting water injection string for offshore oil field and construction method |
| CN112709555A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Efficient separate-prevention separate-injection tubular column for water injection well and construction method |
| CN112709556B (en) * | 2019-10-24 | 2022-12-06 | 中国石油化工股份有限公司 | Rapid well completion pipe string for offshore oilfield water injection well and construction method |
| CN112709557B (en) * | 2019-10-24 | 2022-12-06 | 中国石油化工股份有限公司 | Safe and long-acting water injection string for offshore oil field and construction method |
| CN112709555B (en) * | 2019-10-24 | 2023-02-21 | 中国石油化工股份有限公司 | Efficient separate-prevention separate-injection tubular column for water injection well and construction method |
| CN110778287A (en) * | 2019-12-13 | 2020-02-11 | 孙肖 | Use method of double-hydraulic bidirectional anchoring packer |
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
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