CN202483502U

CN202483502U - Steam injection glide packer

Info

Publication number: CN202483502U
Application number: CN2012200169779U
Authority: CN
Inventors: 闫瑞升; 刘施江; 葛彬
Original assignee: PANJIN XINFUYUAN PETROLEUM MACHINERY PLANT
Current assignee: PANJIN XINFUYUAN PETROLEUM MACHINERY PLANT
Priority date: 2012-01-16
Filing date: 2012-01-16
Publication date: 2012-10-10
Anticipated expiration: 2022-01-16

Abstract

The utility model belongs to the field of oil field drilling and production, in particular to a underground steam injection glide packer which comprises a prestress heat-insulation oil pipe (1), a back cap (2), a gasket (3), a compound sealed chamber (4), a spring (5), a first protecting sleeve (7), an upper sealed chamber (8), a second protecting sleeve (9), an inner chamber (10), a lower sealed chamber (11), a cone (15), a stop ring (16), an outer chamber (18) and a lower joint (21). The gasket (3), the compound sealed chamber (4) and the spring (5) are arranged inside the first protecting sleeve (7) and connected with the prestress heat-insulation oil pipe (1) in sleeved mode, the inner chamber (10) is connected with the outer chamber (18) through a deblocking pin (19), the upper sealed chamber (8) and the lower sealed chamber (11) are arranged in the first protecting sleeve (7) and the second protecting sleeve (9), and the outer chamber (18) is connected with the joint (21) through a blocking pin (20). The steam injection glide packer is good in sealing performance and is capable of reducing cost of thermal production materials.

Description

Steam injection slippage packer

Technical field

the utility model belongs to drilling packer field, oil field, relates in particular to a kind of down-hole steam injection slippage packer.

Technical background

are present; The oil field is in the heavy oil exploitation via steam injection process; Be to reduce steam injection string use cost in the well, telescoping tube is not installed but is utilized the slippage sealing characteristics of packer to eliminate steam injection string and under the thermal stress effect, extend and bring harm to tubing string and ground well head; Because conventional steam injection packer and tubing string are to be rigidly connected through screw thread and steam injection string; In steam injection process as run into casing deformation; Packer will be stuck, and packer has just been lost the slippage compensate function like this, and the safety of tubing string in the well and ground well head is caused the danger side of body equally.

Summary of the invention

the utility model is intended to overcome the deficiency of prior art and provides a kind of simple in structure, the steam injection slippage packer of good seal performance.This packer can be with steam injection string slippage sealing in sleeve pipe, can produce slippage with oil pipe in the packer back that be hampered again, reaches not use telescoping tube and carry out the maximum security of flexible compensation with its slippage, has reduced thermal recovery material cost and work operations amount.

are for solving the problems of the technologies described above; The utility model is achieved in that a kind of steam injection slippage packer, and it comprises that prestressing force insulated tubing, the back of the body cap, packing ring, composite seal tube, spring, first sheath, upper seal bore, second sheath, interior pipe, lower seal tube, inside is furnished with the cone of expansion agent, stopping ring, outer tube, deblocking pin, blocking-up pin and lower contact; Said back of the body cap and interior pipe are affixed with first sheath respectively; Said packing ring, composite seal tube and spring all place in first sheath successively, and with the socket of prestressing force insulated tubing; Said prestressing force insulated tubing and lower contact are fixedly connected; Pipe box is loaded on the prestressing force insulated tubing in said, and joins with outer tube through the deblocking pin; Said upper seal bore and lower seal tube place respectively in first sheath and second sheath successively, and on managing in being set in; Said stopping ring places in the outer tube, and connects with outer tube and cone respectively; Said outer tube joins with joint through the blocking-up pin.

as a kind of preferred version, said back of the body cap of the utility model and interior pipe can adopt thread connection with first sheath.

successively respectively are furnished with an O type circle, two O type circle and three O type circle between the working end of pipe, cone and outer tube as another kind of preferred version in the utility model is said.

the utility model adopts the steam injection thermal expansion to transmit pressure and sets; Set the place and adopt two cartridge and two sheaths; Inner adopt composite seal device and instlated tubular sealing, carry deblocking on after deblocking employing the stopping steam injection, the utility model steam injection slippage packer is reasonable in design; Simple in structure, good seal performance.Thermal recovery material cost and work operations amount have been reduced.

Description of drawings

are described further the utility model below in conjunction with the accompanying drawing and the specific embodiment.

Fig. 1 is the overall structure sketch map of the utility model.

Among figure: 1, prestressing force insulated tubing; 2, back of the body cap; 3, packing ring; 4, composite seal tube; 5, spring; 6, staple; 7, first sheath; 8, upper seal bore; 9, second sheath; 10, interior pipe; 11, lower seal tube; 12, an O type circle; 13, expansion agent; 14, the 2nd O type circle; 15, cone; 16, stopping ring; 17, the 3rd O type circle; 18, outer tube; 19, deblocking pin; 20, blocking-up pin; 21, lower contact.

The specific embodiment

are as shown in the figure; Steam injection slippage packer, it comprises cone 15, stopping ring 16, outer tube 18, deblocking pin 19, blocking-up pin 20 and the lower contact 21 that prestressing force insulated tubing 1, the back of the body cap 2, packing ring 3, composite seal tube 4, spring 5, first sheath 7, upper seal bore 8, second sheath 9, interior pipe 10, lower seal tube 11, inside are furnished with expansion agent 13; Said back of the body cap 2 and interior pipe 10 are affixed with first sheath 7 respectively; Said packing ring 3, composite seal tube 4 and spring 5 all place in first sheath 7 successively, and with 1 socket of prestressing force insulated tubing; Said prestressing force insulated tubing 1 is fixedly connected with lower contact 21; Pipe 10 is set on the prestressing force insulated tubing 1 in said, and joins with outer tube 18 through deblocking pin 19; Said upper seal bore 8 and lower seal tube 11 place respectively in first sheath 7 and second sheath 9 successively, and manage on 10 in being sleeved on; Said stopping ring 16 places in the outer tube 18, and connects with outer tube 18 and cone 15 respectively; Said outer tube 18 joins with joint 21 through blocking-up pin 20.

Said back of the body cap 2 of the utility model and interior pipe 10 and first sheath 7 can adopt thread connection.Be furnished with an O type circle 12, the 2nd O type circle 14 and the 3rd O type circle 17 in the utility model is said between the working end of pipe 10, cone 15 and outer tube 18 successively respectively.

Referring to Fig. 1, the utility model comprises : prestressing force insulated tubing 1, the back of the body cap 2, packing ring 3, composite seal tube 4, spring 5, staple 6, first sheath 7, upper seal bore 8, second sheath 9, interior pipe 10, lower seal tube 11, an O type circle 12, expansion agent 13, the 2nd O type circle 14, cone 15, stopping ring 16, the 3rd O type circle 17, outer tube 18, deblocking pin 19, blocking-up pin 20, lower contact 21; The said back of the body cap 2 and first sheath 7 adopt thread connection; Said packing ring 3, composite seal tube 4, spring 5 all place first sheath 7 inner and with 1 socket of prestressing force insulated tubing; Said first sheath 7 adopts thread connection with interior pipe 10; Said upper seal bore 8 places first sheath, 7 inside, and lower seal tube 11 places second sheath, 9 inside, and manages on 10 in being sleeved on; Said stopping ring 16 places in the outer tube 18, connects with outer tube 18 and cone 15 respectively; Pipe 10 connects through deblocking pin 19 with outer tube 18 in said; Said outer tube 18 connects through blocking-up pin 20 with joint 21; Be furnished with an O type circle 12, the 2nd O type circle 14, the 3rd O type circle 17 in said between pipe 10, cone 15 and outer tube 18 working ends; Interior pipe 10 is sleeved on the prestressing force insulated tubing 1; Prestressing force insulated tubing 1 adopts thread connection with lower contact 21.

the utility model adopts two groups of sealing mechanisms to carry out combination sealing.As shown in Figure 1, during work, packer is down to the precalculated position; Begin to inject high-temperature steam, under high temperature action, composite seal tube 4, upper seal bore 8, lower seal tube 11 hardness change; Expansion agent 13 is heated and begins to expand in the cone 15, drives cone 15 motions, promotes lower seal tube 11; Drive the 8 expansion completion of second sheath, 9 promotion upper seal bores and set, inner composite seal tube 4 is compressed between the prestressing force insulated tubing 1 and first sheath 7 by spring 5 and forms sealing; Along with the continuation rising of temperature, tubing string is elongation gradually under the thermal stress effect, drives the packer integral body to the down-hole slippage through lower contact 21, blocking-up pin 20, discharges the thermal stress deformation of tubing string; If in downward slipping, running into casing deformation blocks packer; At this moment, packer is motionless, and tubing string continues to promote lower contact 21 and moves down; When motive force is pinned 20 shearings greater than blocking-up; Blocking-up pin 20 is cut off, and tubing string and packer break away from connection status, and tubing string is having no downward slippage under the state of binding force.

the utility model adopts thermal expansion to transmit pressure and sets, and there are two packing elements and two sheaths in the place of setting, and there is one group of composite seal tube inside, and slippage is hampered and is provided with blocking-up pin 20; After stopping to annotate vapour, treat that temperature reduces, the upper body tubing string gets final product deblocking, when on carry when being hampered, deblocking pin 19 will be cut off under the effect of upper lifting force, the packer locking member will be released fully, packer is just with tubing string proposition well.This steam injection slippage packer, reasonable in design, simple in structure, good seal performance is well suited for field popularization application.

be with being appreciated that, more than about the specific descriptions of the utility model, only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment.Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect.As long as satisfy the use needs, all in the protection domain of the utility model.

Claims

1. steam injection slippage packer; It is characterized in that, comprise that prestressing force insulated tubing (1), the back of the body cap (2), packing ring (3), composite seal tube (4), spring (5), first sheath (7), upper seal bore (8), second sheath (9), interior pipe (10), lower seal tube (11), inside is furnished with the cone (15) of expansion agent (13), stopping ring (16), outer tube (18), deblocking pin (19), blocking-up pin (20) and lower contact (21);

Said back of the body cap (2) and interior pipe (10) are affixed with first sheath (7) respectively; Said packing ring (3), composite seal tube (4) and spring (5) all place in first sheath (7) successively, and with prestressing force insulated tubing (1) socket; Said prestressing force insulated tubing (1) is fixedly connected with lower contact (21); Pipe (10) is set on the prestressing force insulated tubing (1) in said, and joins through deblocking pin (19) and outer tube (18); Said upper seal bore (8) and lower seal tube (11) place respectively in first sheath (7) and second sheath (9) successively, and are set on the interior pipe (10); Said stopping ring (16) places in the outer tube (18), and connects with outer tube (18) and cone (15) respectively; Said outer tube (18) joins through blocking-up pin (20) and joint (21).

2. steam injection slippage packer according to claim 1 is characterized in that: said back of the body cap (2) and interior pipe (10) adopt thread connection with first sheath (7).

3. steam injection slippage packer according to claim 2 is characterized in that: be furnished with an O type circle (12), the 2nd O type circle (14) and the 3rd O type circle (17) successively respectively between the working end of pipe (10), cone (15) and outer tube (18) in said.