CN201460802U

CN201460802U - Insertion pipe packer

Info

Publication number: CN201460802U
Application number: CN2009200923196U
Authority: CN
Inventors: 徐贵东; 蔡藻; 贾中; 杜建军; 高文龙
Original assignee: Puyang Donghao Mechanical & Electric Co Ltd
Current assignee: Puyang Donghao Mechanical & Electric Co Ltd
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2010-05-12
Anticipated expiration: 2019-08-11

Abstract

The utility model relates to an insertion pipe packer provided with an insertion pipe, which comprises an upper middle pipe, an upper connector, a lower middle pipe, a ball seat, a middle pipe, and a lower connector, wherein an upper piston sleeve is connected with the upper connector, a piston is arranged between the upper piston sleeve and the upper middle pipe, the piston and the upper middle pipe are connected with a lower piston, the middle piston sleeved on the lower piston is connected with the lower piston, the middle piston is connected with a mobile piston sleeve, a lower middle pipe is connected with the lower piston, the lower piston sleeve on the lower middle pipe is connected with a middle mobile sleeve, a fishing sleeve is mounted on the ball seat, a steel ball is arranged in the inner cavity, a pin sleeve is sleeved on the fishing sleeve, a lock block is arranged on the middle pipe, a lock ring is arranged below the lock block, a connecting sleeve is mounted on the external surface of the lock ring seat, a slip sleeve is mounted on a cone body on the middle pipe, a bi-directional slip is mounted on the middle pipe between the upper cone body and the lower cone body, an adjusting ring is arranged on one side of the lower cone body, an upper rubber cylinder seat is arranged on one side of the adjusting ring, and a spacing ring is arranged between the rubber cylinders on one side of the upper rubber cylinder seat. The utility model has rather high flexibility, is applicable for several different production technologies, has complete functions and stable operation, simplifies the site construction and lowers the cost.

Description

The intubate packer

Technical field:

The utility model belongs to the laminated distributor under well instrument that oil recovery field, oil field is used, and relates to a kind of intubate packer that has intubate.

Background technology:

Along with continually developing of oil field, how to improve recovery ratio, reducing production costs becomes trend, therefore need supporting diversified construction technology, this wherein packer be an important link, conventional packer generally all is to design production at concrete construction technology, range of application is narrower, more single on function, and when process pipe string lost efficacy, conventional packer all must take out generally speaking, when descending process pipe string again, need more renew packer, and site operation is more numerous and diverse, the cost of production height.At this difficult problem, need a kind of very packer that has intubate of high flexibility that when the allotment tubing string, has, be applicable to multiple different production technology, multiple functional, working stability, on function, can realize the purpose of " once set and repeatedly examine pump ", thereby simplify site operation, reduce production costs.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art and a kind of packer that has intubate that adopts intubate seal assembly and packer body split-type structural is provided, when the allotment tubing string, has very high flexibility, can be applicable to multiple different production technology, multiple functional, working stability, on function, can realize the purpose of " once set and repeatedly examine pump ", thereby simplify site operation, reduce cost of production.

The purpose of this utility model is achieved in that and comprises upper center tube, be sleeved on the top connection on the upper center tube, the lower center tube that is connected with upper center tube, the ball seat that is threaded with lower center tube, the central tube that is connected with ball seat, the lower contact that is threaded with central tube, it is characterized in that: in the top connection of upper center tube, be connected with the upper piston cover, sealing is provided with piston between upper piston cover and upper center tube, piston is threaded with upper center tube and lower piston, on lower piston, be set with middle piston, middle piston and lower piston are tightly connected, middle piston is connected with the piston bush thread seal again, lower center tube is threaded with lower piston, on lower center tube, be set with the lower piston cover, the lower piston cover also is connected with middle piston thread, on ball seat, be set with fishing sleeve, between ball seat and fishing sleeve, be set with central tube, in the inner chamber of ball seat, be provided with steel ball, be set with the pin cover in the fishing sleeve outside by pin, between central tube and ball seat, be provided with sealing ring and pin, the screw thread at lock tube two respectively with the pin cover, connector connects, fishing sleeve is connected with central tube by pin, central tube is provided with lock dog, below lock dog, be provided with lock ring by the lock ring seat, adjusting nut has been threaded on the central tube below the lock ring seat, be set with adapter sleeve in lock ring seat outside, on central tube, be set with upper cone, on upper cone, be set with slip sleeve again, on central tube, be set with lower cone, on the central tube between upper cone and the lower cone, bi-directional slip is installed by garter spring and slip sleeve, slip sleeve is installed in the outside of upper cone and lower cone by fixing pin, side at lower cone is provided with adjustable ring, be provided with glue tube base in adjustable ring one side, by protecting bowl packing element is installed in last glue tube base one side, and between packing element, be provided with spacer ring, be provided with sealing ring between lower contact and the central tube.

In top connection, also be connected with the intubate seal assembly, the intubate seal assembly comprise set upright joint, with the joint of setting upright intubate that joint screw thread is connected, be threaded with intubate by sealing ring, be threaded in the guide shoe on the joint, between intubate and joint and joint and guide shoe, be provided with two public Supporting rings and concavo-convex metal ring, between two public Supporting rings and concavo-convex metal ring, be provided with joint ring.

The beneficial effects of the utility model are:

1, this product adopts the structure that packer body, intubate seal assembly, hydraulic base sealed mechanism separate, during operate as normal, when losing efficacy because of the non-packer reason of oil pipe and other as tubing string, tubing string and the intubate that can directly take out on the packer are overhauled, and do not need the packer deblocking is taken out, simplify on-site construction operations, thereby saved cost of production.

2, have wide range of applications, this packer is except that the branch that is used for oilfield oil well as common packer is adopted, the several work such as formation testing by layer of dispensing, card water blockoff and prospect pit, also can be used as other purposes such as anti-junk device of horizontal well or bridging plug.

3, intubate seal assembly and packer body adopt movable sealing, and when operate as normal, the wriggling of tubing string can not impact packer.

4. deblocking adopts with fisher safe back-off sub mechanism, when causing packer deblocking difficulty because of cause specific or can't deblocking the time, can selecting pitching to suppress and put the deblocking tubing string aside, can effectively avoid lock of tool drilling.

This packer has fluid pressure type gives up, and adopts the bi-directional slip anchored mode, have wide range of applications, and working stability, such as: divide and can realize once setting the purpose of repeatedly examining pump when adopting.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the sequential chart of Fig. 1.

Fig. 3 is the sequential chart of Fig. 2.

Fig. 4 is the sequential chart of Fig. 3.

Fig. 5 is the structural representation of intubate seal assembly of the present utility model.

The specific embodiment:

As Fig. 1,2,3, shown in 4, the utility model comprises upper center tube 1, be sleeved on the top connection 2 on the upper center tube 1, the lower center tube 10 that is connected with upper center tube 1, the ball seat 12 that is threaded with lower center tube 10, the central tube 15 that is connected with ball seat 12, the lower contact 38 that is threaded with central tube 15, in the top connection 2 of upper center tube 1, be connected with upper piston cover 3, sealing is provided with piston 5 between upper piston cover 3 and upper center tube 1, piston 5 is threaded with upper center tube 1 and lower piston 8, piston 7 on lower piston 8, being set with, middle piston 7 is tightly connected with lower piston 8, middle piston 7 is connected with piston bush 3 thread seals again, lower center tube 10 is threaded with lower piston 8, on lower center tube 10, be set with lower piston cover 9, lower piston cover 9 also is threaded with middle piston 7, on ball seat 12, be set with fishing sleeve 11, between ball seat 12 and fishing sleeve 11, be set with central tube 15, in the inner chamber of ball seat 12, be provided with steel ball 16, be set with pin cover 14 in fishing sleeve 11 outsides by pin 13, between central tube 15 and ball seat 12, be provided with sealing ring 17 and pin 18, the screw thread at lock tube 19 two overlaps 14 with pin respectively, connector 21 connects, fishing sleeve 11 is connected with central tube 15 by pin 20, central tube 15 is provided with lock dog 22, below lock dog 22, be provided with lock ring 24 by lock ring seat 23, adjusting nut 25 has been threaded on the central tube below the lock ring seat 23 15, be set with adapter sleeve 21 in lock ring seat 23 outsides, on central tube 15, be set with upper cone 26, on upper cone 26, be set with slip sleeve 27 again, on central tube 15, be set with lower cone 30, on the central tube 15 between upper cone 26 and the lower cone 30, bi-directional slip 28 is installed by garter spring 29 and slip sleeve 27, slip sleeve 27 is installed in the outside of upper cone 26 and lower cone 30 by fixing pin 30, side at lower cone 30 is provided with adjustable ring 32, be provided with glue tube base 33 in adjustable ring 32 1 sides, by protecting bowl 34 packing element 35 is installed in last glue tube base 33 1 sides, and between packing element 35, be provided with spacer ring 36, be provided with sealing ring 37 between lower contact 38 and the central tube 15.

As shown in Figure 5, in top connection 2, also be connected with the intubate seal assembly, the intubate seal assembly comprise set upright joint 39, with the joint 43 of setting upright intubate 40 that joint 39 is threaded, be threaded with intubate 40 by sealing ring 44, be threaded in the guide shoe 47 on the joint 43, between intubate 40 and joint 43 and joint 43 and guide shoe 47, be provided with two public Supporting rings 42 and concavo-convex metal ring 41, between two public Supporting rings 42 and concavo-convex metal ring 41, be provided with joint ring 45,46.

This packer down behind the predetermined design position, drops into steel ball with oil pipe, treat that steel ball arrives the ball seat position after, beginning is just suppressed, and when pressure reaches one regularly, sets shear pin and is cut off, three grades of fluid cylinders move simultaneously, thereby bi-directional slip 20 is stretched out, and are supported on the casing wall, meanwhile, packing element 26 is subjected to force compresses, thus Seal Oil cover annular space, reach and set purpose, when setting, lock ring 16 is locked with lock tube 13, causes the packing element 26 can not resilience.When pressure continued to improve, the shear pin of giving up was cut off, and back-off sub begins to throw off, and hydraulic setting mechanism and packer body are put aside, is lowered to the intubate seal assembly then and docks with the packer body, thereby finish the whole process that sets.Can carry out ordinary production afterwards, when flow string lost efficacy because of oil pipe or non-packer reason, can directly take out packer and overhaul, and will not take out by the packer deblocking with top and intubate.During deblocking, be lowered to fishing head, make it to be connected with fishing sleeve, the upper lifting pipe post gets final product deblocking then.

Claims

1. intubate packer, comprise upper center tube (1), be sleeved on the top connection (2) on the upper center tube (1), the lower center tube (10) that is connected with upper center tube (1), the ball seat (12) that is threaded with lower center tube (10), the central tube (15) that is connected with ball seat (12), the lower contact (38) that is threaded with central tube (15), it is characterized in that: in the top connection (2) of upper center tube (1), be connected with upper piston cover (3), sealing is provided with piston (5) between upper piston cover (3) and upper center tube (1), piston (5) is threaded with upper center tube (1) and lower piston (8), on lower piston (8), be set with middle piston (7), middle piston (7) is tightly connected with lower piston (8), middle piston (7) is connected with piston bush (3) thread seal again, lower center tube (10) is threaded with lower piston (8), on lower center tube (10), be set with lower piston cover (9), lower piston cover (9) also is threaded with middle piston (7), on ball seat (12), be set with fishing sleeve (11), between ball seat (12) and fishing sleeve (11), be set with central tube (15), in the inner chamber of ball seat (12), be provided with steel ball (16), be set with pin cover (14) in fishing sleeve (11) outside by pin (13), between central tube (15) and ball seat (12), be provided with sealing ring (17) and pin (18), the screw thread at lock tube (19) two respectively with pin cover (14), connector (21) connects, fishing sleeve (11) is connected with central tube (15) by pin (20), central tube (15) is provided with lock dog (22), be provided with lock ring (24) in lock dog (22) below by lock ring seat (23), adjusting nut (25) has been threaded on the central tube (15) of lock ring seat (23) below, be set with adapter sleeve (21) in lock ring seat (23) outside, on central tube (15), be set with upper cone (26), on upper cone (26), be set with slip sleeve (27) again, on central tube (15), be set with lower cone (30), central tube (15) between upper cone (26) and lower cone (30) is gone up and by garter spring (29) and slip sleeve (27) bi-directional slip (28) is installed, slip sleeve (27) is installed in the outside of upper cone (26) and lower cone (30) by fixing pin (30), side at lower cone (30) is provided with adjustable ring (32), be provided with glue tube base (33) in adjustable ring (32) one sides, by protecting bowl (34) packing element (35) is installed in last glue tube base (33) one sides, and between packing element (35), be provided with spacer ring (36), be provided with sealing ring (37) between lower contact (38) and the central tube (15).

2. intubate packer according to claim 1, it is characterized in that: in top connection (2), also be connected with the intubate seal assembly, the intubate seal assembly comprises sets upright joint (39), with set upright the intubate (40) that joint (39) is threaded, the joint (43) that is threaded with intubate (40) by sealing ring (44), be threaded in the guide shoe (47) on the joint (43), between intubate (40) and joint (43) and joint (43) and guide shoe (47), be provided with two public Supporting rings (42) and concavo-convex metal ring (41), between two public Supporting rings (42) and concavo-convex metal ring (41), be provided with joint ring (45,46).