CN202970611U - Double pressurizing channel packer suitable for oil pipe sealing detection - Google Patents
Double pressurizing channel packer suitable for oil pipe sealing detection Download PDFInfo
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- CN202970611U CN202970611U CN 201220691850 CN201220691850U CN202970611U CN 202970611 U CN202970611 U CN 202970611U CN 201220691850 CN201220691850 CN 201220691850 CN 201220691850 U CN201220691850 U CN 201220691850U CN 202970611 U CN202970611 U CN 202970611U
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Abstract
The utility model discloses a double pressurizing channel packer suitable for oil pipe sealing detection. The double pressurizing channel packer comprises a mandrel, a hydraulic cylinder, an outer barrel, a pigging gauge and rubber barrels. The outer barrel is sleeved on the mandrel. The rubber barrels are respectively arranged at two ends of the outer barrel and connected with the pigging gauge. The hydraulic cylinder is arranged on one side outside the pigging gauge. A hydraulic oil channel and a high-pressure mixer channel are arranged on the hydraulic cylinder. The double pressurizing channel packer is small in packer inner cavity size, low in gas consumption quantity, capable of lowering operation cost, short in packer sealing time, and capable of saving detection time.
Description
Technical field
The utility model relates to formation testing testing well lower tubular column safety technics field, exactly relates to a kind of packer that is applicable to the oil pipe sealing detection.
Background technology
The exploitation of domestic HTHP acid gas field, use more than 10 years at OIH pipe General Requirements after operation, for guaranteeing the long-term security development in gas field, require to be lowered in process at oil pipe just oil pipe thread to be carried out sealing detection, can satisfy production requirement with the quality of connection of guaranteeing oil pipe thread.
Publication number is CN202531094U, the Chinese patent literature that open day is on November 14th, 2012 discloses a kind of compression packer, use for solving conventional packer that period of validity is short, the later stage operating risk large, the problem such as poor and well-flushing channel switch difficulty designs to the oil pressure adaptive faculty, mainly comprise bushing pipe, the suit bushing pipe of the upper and lower joint that connects central tube, suit central tube packing element, advance and overlap and deblocking piston etc.With compare at the compression packer of use both at home and abroad at present, the utility model packer setting is airtight and not affected by tubing pressure fluctuation, sealing is reliable; Cancelled the well-flushing passage, make set, deblocking is more reliably more flexible, the situation of having avoided passage not open or fit badly; Adopt hydraulic pressure and two kinds of decompress(ion) modes of machinery to support the use, have deblocking, sand control two-way safeguarding function; The filtration cover that arranges improves the condition of work of understanding the envelope piston, has improved the reliability of operation.
The hermetization testing method that adopts at present is: packer is put into oil pipe, by add air pressure to packer, it is set rear further increase detection gas strength to the detected pressures that requires.This packer Shortcomings: 1. this kind packer cavity volume is large, and air consumption is high, has greatly increased operating cost; 2. packer adopts the design of single channel gas boosting, causes setting the time long, and detection time is long; 3. packer setting pressure can't be adjusted, and can not guarantee the sealing of packing element; 4. during deblocking, easily occur closing in advance because of pressure release passage, cause packer to suppress the situation of jumping, increased operating risk.
The utility model content
For solving the existing technical problem of above-mentioned prior art, the utility model proposes a kind of two Pressure channel packers that are applicable to the oil pipe sealing detection, adopt the utility model, the packer cavity volume is little, air consumption is low, reduced operating cost, the packer setting time is short, has saved detection time.
The utility model is by adopting following technical proposals to realize:
A kind of two Pressure channel packers that are applicable to the oil pipe sealing detection, comprise axle, fluid cylinder, urceolus, drift size gauge tool and packing element, it is characterized in that: described urceolus is enclosed within on axle, be respectively arranged with described packing element at the two ends of urceolus, packing element is connected with described drift size gauge tool, a side is provided with described fluid cylinder outside drift size gauge tool, is provided with hydraulic oil channel and high pressure mixing device passage on described fluid cylinder.
Described packing element comprises the packing element body, described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body.
Described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space.
Be provided with metallic supports in described head end packing element body and end packing element body.
Described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork.
Compared with prior art, the technique effect that reaches of the utility model is as follows:
1, in the utility model, the packer cavity volume is little, and air consumption is low, has reduced operating cost; The packer setting time is short, has saved detection time; Packer setting pressure is adjustable, is more conducive to improve the sealing of packing element; During deblocking, because adopting two Pressure channels designs, can guarantee pressure release complete after deblocking again, reduced operating risk.5. adopt and set design without slips, avoid in operation the injury to oil pipe.
2, described packing element body comprises head end packing element body, middle part packing element body and end packing element body, head end packing element body, middle part packing element body and end packing element body are integral structure, and the hardness of head end packing element body and end packing element body is higher than middle part packing element body, two ends packing element body hardness is high make packing element present in the middle of soft both sides hard, this structure provides good stress during for the packing element distending, ensure the packing element sealing effectiveness, can bear 105MPa operting differential pressure and 177 ℃ of downhole temperatures.
3, in the utility model, described packing element body is three stage structure, comprise head end packing element body, end packing element body and a middle part packing element body, and the junction of head end packing element body and end packing element body and middle part packing element body is provided with deformation space, deformation space makes more easily sealing between the packing element body, and sealing effectiveness is better.
4, in the utility model, be provided with metallic supports in described head end packing element body and end packing element body, increased packing element intensity and pressure reduction ability to bear.
5, in the utility model, described metallic supports is arranged on the contact position of head end packing element body and end packing element body and packer metalwork, and metallic supports can be extruded to prevent packing element at the two ends of packing element formation dividing plate after the packing element distending.
6, the utility model is applicable to internal diameter 108mm ~ 170mm sleeve pipe, and packing element relies on the compression distending, and the annular space between packing tubing string and sleeve pipe can bear the seal pressure differential of 105MPa, thereby protect sleeve pipe under the temperature condition of 20 ℃ ~ 177 ℃.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is overall structure schematic diagram of the present utility model
Fig. 2 is the structural representation of packing element
Mark in figure:
1, axle, 2, fluid cylinder, 3, urceolus, 4, drift size gauge tool, 5, packing element, 21, head end packing element body, 22, middle part packing element body, 23, end packing element body, 24, metallic supports, 25, deformation space, A, hydraulic oil channel, B, high pressure mixing device passage, C, tube inner wall.
The specific embodiment
Embodiment 1
As a better embodiment of the present utility model, the utility model mainly is comprised of axle 1, fluid cylinder 2, urceolus 3, drift size gauge tool 4, packing element, operating principle: use pump to passing through passage A to the interior infusion hydraulic oil of fluid cylinder 2, pushing piston moves down and pushes packing elements together with drift size gauge tool 4 along axle 1, its distending is realized setting, set by channel B infusion high pressure mixing gas in the packer, high pressure mixed gas continues to be forced into the detected pressures value by the pressure transmission hole on urceolus 3 in the trap space of packing element and tube inner wall C.After first the detection gas in the trap space being released after detect finishing, then release and set pressure, fluid cylinder 2 resets, and packing element shrinks, afterwards deblocking.Set, detect in this utility model design and separately used different pressurization passageway, thereby when effectively having avoided high pressure relief because of the packer trap incomplete, deblocking causes the problem of equipment spring, guaranteed the safety of operation, set design without slips, also avoided in the operation injury to oil pipe.
As preferred forms of the present utility model, described packing element comprises the packing element body, described packing element body comprises head end packing element body 21, middle part packing element body 22 and end packing element body 23, head end packing element body 21, middle part packing element body 22 and end packing element body 23 are integral structure, and the hardness of head end packing element body 21 and end packing element body 23 is higher than middle part packing element body 22.Described packing element body is three stage structure, comprise head end packing element body 21, end packing element body 23 and a middle part packing element body, and the junction of head end packing element body 21 and end packing element body 23 and middle part packing element body is provided with deformation space 25.Be provided with metallic supports 24 in described head end packing element body 21 and end packing element body 23.Described metallic supports 24 is arranged on the contact position of head end packing element body 21 and end packing element body 23 and packer metalwork.
Claims (3)
1. two Pressure channel packers that are applicable to the oil pipe sealing detection, comprise axle (1), fluid cylinder (2), urceolus (3), drift size gauge tool (4) and packing element, it is characterized in that: described urceolus (3) is enclosed within on axle (1), two ends at urceolus (3) are respectively arranged with described packing element, packing element is connected with described drift size gauge tool (4), a side is provided with described fluid cylinder (2) outside drift size gauge tool (4), be provided with hydraulic oil channel and high pressure mixing device passage on described fluid cylinder (2), described packing element comprises the packing element body, described packing element body comprises head end packing element body (21), middle part packing element body (22) and end packing element body (23), head end packing element body (21), middle part packing element body (22) and end packing element body (23) are integral structure, and the hardness of head end packing element body (21) and end packing element body (23) is higher than middle part packing element body (22), and head end packing element body (21) and end packing element body (23) are provided with deformation space (25) with the junction of middle part packing element body.
2. a kind of two Pressure channel packers that are applicable to the oil pipe sealing detection according to claim 1, is characterized in that: be provided with metallic supports (24) in described head end packing element body (21) and end packing element body (23).
3. a kind of two Pressure channel packers that are applicable to the oil pipe sealing detection according to claim 1 is characterized in that: described metallic supports (24) is arranged on the contact position of head end packing element body (21) and end packing element body (23) and packer metalwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691850 CN202970611U (en) | 2012-12-14 | 2012-12-14 | Double pressurizing channel packer suitable for oil pipe sealing detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220691850 CN202970611U (en) | 2012-12-14 | 2012-12-14 | Double pressurizing channel packer suitable for oil pipe sealing detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970611U true CN202970611U (en) | 2013-06-05 |
Family
ID=48511698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220691850 Expired - Lifetime CN202970611U (en) | 2012-12-14 | 2012-12-14 | Double pressurizing channel packer suitable for oil pipe sealing detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970611U (en) |
-
2012
- 2012-12-14 CN CN 201220691850 patent/CN202970611U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |