CN203321419U

CN203321419U - Multi-rubber tube packer

Info

Publication number: CN203321419U
Application number: CN2013201467159U
Authority: CN
Inventors: 高志刚
Original assignee: PANJIN XINHUI PETROLEUM TECHNOLOGY Co Ltd
Current assignee: PANJIN XINHUI PETROLEUM TECHNOLOGY Co Ltd
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2013-12-04
Anticipated expiration: 2023-03-28

Abstract

The utility model belongs to the technical field of layered packing for a water injection well/high temperature steam injection well and mechanical blast hole plugging during oil exploitation, and relates to a multi-rubber tube packer, which mainly and structurally comprises an upper connector, an upper jacket, liner tubes, a center tube, a connecting tube, a valve body, a valve element, a casing, a lower connector, a spring, a de-packing dowel, a lower jacket, a pressing cap, rubber tubes, a liquid inlet and through holes, wherein the upper connector, the center tube and the lower connector are sequentially connected into a whole via screws; the upper jacket, the liner tubes, the connecting tube, the valve body and the casing are sequentially connected into a whole via screws and are arranged outside the center tube; seal rings are arranged for components as needed. The multiple rubber tubes are supported on a sleeve synchronously, so that the support force of the multi-rubber tube packer is multiple times of that of the existing packer, and meanwhile, the length of the multi-rubber tube packer can be determined through adjusting the number of the rubber tubes as needed.

Description

Many Tubing Packer

Technical field

The utility model belongs to layering packing and the machine plugging borehole technical field of water injection well in oil exploitation, High-temperature Spurting of Steam Injuction Well, relates in particular to a kind of Tubing Packer.

Background technology

In oil development, for controlling invalid notes, adopt, improve the long-pending coefficient of water filling or steam injection ripple, there is variety of way to be segmented interval and shutoff, received certain effect.But, for the well of not stablizing interlayer or little interlayer, adopt common process can't realize mechanical layering and shutoff.In conventional pipe string of oil-water well design, the allowable error of every 1000m tubing string is 0.03%, when thickness of interlayer is less than 0.5m, adopts conventional compression packer can't carry out oil-separating layer.The many Tubing Packer of expanding are utilized the length of packing element, compensation tubing string error can realize reverse packing, but use at present one group of Tubing Packer not meet tubing string is supported on to support force required on sleeve pipe, and the length of packer can not arbitrarily be adjusted.

Summary of the invention

Increase the packing element limited length and support hypodynamic defect in order to overcome packer in prior art, the utility model provides a kind of many Tubing Packer.

The technical solution of the utility model is as follows:

A kind of many Tubing Packer, be comprised of top connection, upper jacket, bushing pipe, central tube, tube connector, valve body, spool, housing, lower contact, spring, deblocking pin, lower jacket, pressure cap, packing element, inlet opening, through hole; The inboard of top connection and the outside screwed connection of the upper end of central tube, be provided with sealing ring between top connection and central tube, the outside, lower end of central tube and the inboard screwed connection of lower contact; Be provided with upper jacket, bushing pipe, tube connector, lower jacket, valve body, housing in the outside of central tube, the inboard of upper jacket is by the outside screwed connection of the bushing pipe of screw thread and packer upper end, utilize the inboard screwed connection of end outside screw thread and tube connector between bushing pipe, the bushing pipe of packer lower end is by end outside screw thread and the inboard screwed connection of lower jacket, the inboard, lower end of lower jacket and the outside screwed connection of valve body, the outside, lower end of valve body is by the inboard screwed connection in the upper end of screw thread and housing; Each bushing pipe all is coated with packing element outward, inboard, packing element two ends and its upper jacket joined, tube connector and lower jacket between be provided with sealing ring; Upper jacket is provided with the deblocking pin, and the deblocking pin links together top connection, upper jacket and central tube; Top connection, upper jacket are respectively by being provided with sealing ring between sealing ring and central tube; Between lower jacket and valve body, between valve body and housing, between valve body and central tube, between housing and lower contact, be equipped with sealing ring; Upper jacket, bushing pipe, tube connector, lower jacket, valve body and central tube have formed an annular seal space; Be provided with through hole on each bushing pipe; Be provided with the chamber that inlet opening leads to valve body, central tube, housing formation in lower contact.

The quantity of packing element is 2-14.

Valve body has the pressure cap of head and middle spool, and spring is between pressure cap and spool.

The beneficial effects of the utility model are: a plurality of packing elements are supported on sleeve pipe simultaneously, support force is many times of existing packer, can be supported on reliably on sleeve pipe by tubing string, need on tubing string, not increase anchoring device, tubing string is simple, tubing string is safe from harm, convenient working, the length of packer can be determined by the quantity of adjusting packing element as required simultaneously.

The accompanying drawing explanation

Fig. 1 is the structure chart that the many Tubing Packer of the utility model have two packing elements.

In figure: 1 top connection, 2 upper jackets, 3-1 the first bushing pipe, 3-2 the second bushing pipe, 4 central tubes, 5 tube connectors, 6 valve bodies, 7 spools, 8 housings, 9 lower contacts, 10 springs, 11 deblocking pins, 12 lower jackets, 13 pressure caps, 14-1 the first packing element, 14-2 the second packing element, 15 inlet openings, 16-1 the first through hole, 16-2 the second through hole.

The specific embodiment

Now by reference to the accompanying drawings the utility model is carried out to detailed explanation.

As shown in drawings, two Tubing Packer are comprised of top connection 1, upper jacket 2, the first bushing pipe 3-1, the second bushing pipe 3-2, central tube 4, tube connector 5, valve body 6, spool 7, housing 8, lower contact 9, spring 10, deblocking pin 11, lower jacket 12, pressure cap 13, the first packing element 14-1, the second packing element 14-2, inlet opening 15, the first through hole 16-1 and the second through hole 16-2; The upper end outside screwed connection of the inboard of top connection 1 and central tube 4, be provided with sealing ring between top connection 1 and central tube 4, the outside, lower end of central tube 4 and the inboard screwed connection of lower contact 9; Be provided with upper jacket 2, the first bushing pipe 3-1, the second bushing pipe 3-2, tube connector 5, lower jacket 12, valve body 6, housing 8 in the outside of central tube 4, the inboard of upper jacket 2 is by the upper outside screwed connection of screw thread and the first bushing pipe 3-1, the upper inner screwed connection of the lower outside of the first bushing pipe 3-1 and tube connector 5, the lower outside screw thread of tube connector 5 and the inboard screwed connection of lower jacket 12, the inboard, lower end of lower jacket 12 and the outside screwed connection of valve body 6, the outside, lower end of valve body 6 is by the inboard screwed connection in the upper end of screw thread and housing 8; The first bushing pipe 3-1 and the second bushing pipe 3-2 outside are coated with respectively packing element 14-1 and packing element 14-2, the first outside, packing element 14-1 two ends are provided with sealing ring with upper jacket 2 with the position that tube connector 5 is connected, and the outside, two ends of the second sheath 14-2 is provided with sealing ring with tube connector 5 with the position that lower jacket 12 is connected; Upper jacket 2 is provided with deblocking pin 11, and deblocking pin 11 links together top connection 1, upper jacket 2 and central tube 4; Top connection 1, upper jacket 2 are respectively by being provided with sealing ring between sealing ring and central tube; Between lower jacket 12 and valve body 6, between valve body 6 and housing 8, between valve body 6 and central tube 4, between housing 8 and lower contact 9, be equipped with sealing ring; Upper jacket 2, bushing pipe, tube connector 5, lower jacket 12, valve body 6 have formed an annular seal space with central tube 4; Be respectively equipped with through hole 16-1 and 16-2 on the first bushing pipe 3-1 and the second bushing pipe 3-2; Be provided with in lower contact 9 chamber that inlet opening 15 leads to valve body 6, central tube 4, housing 8 formation.

Valve body 6 has the pressure cap 13 of head and middle spool 7, and spring 10 is between pressure cap and spool.

The working method of many Tubing Packer of the present utility model is hydraulic settings, above carries deblocking, and the packer with two packing elements of take is example, and concrete operation method is as follows:

While setting, from the oil pipe pressurization, liquid enters the gap of housing 8 and central tube 4 through central tube 4 inlet openings 15, act on spool 7, when pressure surpasses 1MPa, spool 7 overcomes the pressure of spring 10, to up, opens, and liquid enters bushing pipe by through hole and acts on packing element, make 2 packing element expansions, when the fluid pressure between 2 packing elements and central tube 4 and the pressure balance in central tube 4, spool 7 is closed under the effect of spring 10, and 2 packing elements keep expansion state.

During deblocking, the venting tubing pressure, above carry central tube 4, and lower contact 9 is simultaneously up with it, and backs down spool 7,2 packing element internal pressures of venting, and liquid overflows from central tube 4 inlet openings 15, and 2 packing elements shrink, and complete deblocking.

The many Tubing Packer of expanding of the present utility model, for shutoff and the reverse packing of little interlayer in the thick-layer layer, have been realized to shutoff and the purpose of segmenting interval in the layer, thereby improved the development effectiveness in oil field.The length of packing element of the present utility model and intensity reach can the shutoff borehole, again can be setting for a long time, there are the characteristics of the easy deblocking of high pressure-bearing simultaneously.

Claims

1. Tubing Packer more than a kind, is characterized in that, top connection, upper jacket, bushing pipe, central tube, tube connector, valve body, spool, housing, lower contact, spring, deblocking pin, lower jacket, pressure cap, a 2-14 packing element, inlet opening, through hole, consists of; The inboard of top connection and the outside screwed connection of the upper end of central tube, be provided with sealing ring between top connection and central tube, the outside, lower end of central tube and the inboard screwed connection of lower contact; Be provided with upper jacket, bushing pipe, tube connector, lower jacket, valve body, housing in the outside of central tube, the inboard of upper jacket is by the outside screwed connection of the bushing pipe of screw thread and packer upper end, utilize the inboard screwed connection of end outside screw thread and tube connector between bushing pipe, the bushing pipe of packer lower end is by end outside screw thread and the inboard screwed connection of lower jacket, the inboard, lower end of lower jacket and the outside screwed connection of valve body, the outside, lower end of valve body is by the inboard screwed connection in the upper end of screw thread and housing; Each bushing pipe all is coated with packing element outward, inboard, packing element two ends and its upper jacket joined, tube connector and lower jacket between be provided with sealing ring; Upper jacket is provided with the deblocking pin, and the deblocking pin links together top connection, upper jacket and central tube; Top connection, upper jacket are respectively by being provided with sealing ring between sealing ring and central tube; Between lower jacket and valve body, between valve body and housing, between valve body and central tube, between housing and lower contact, be equipped with sealing ring; Upper jacket, bushing pipe, tube connector, lower jacket, valve body and central tube have formed an annular seal space; Be provided with through hole on each bushing pipe; Be provided with the chamber that inlet opening leads to valve body, central tube, housing formation in lower contact.