CN201250642Y - Oil well pressure measurement and water plugging packer - Google Patents

Abstract

The utility model discloses an oil well pressure measurement and water plugging packer, for resolving the problems of prior compressed type packers such as large volume and complex structure, wherein a rubber tube (2), a push rind (3), a sleeve (6) and a deblocking shear pin base (8) are arranged outside a center tube (1), the push ring (3) is directly fixed on the center tube (1) via an unseal shear pin (4), a clip spring (5) is fixed at the upper part of the push ring (3), the sleeve (6) is fixed on the unseal shear pin base (8) via an unseal shear pin (7), and the unseal shear pin base (8) is connected with the lower part of the center tube (1) via screws. The oil well pressure measurement and water plugging packer has the advantages of simple structure and simple installment.

Description

Oil well pressure measurement, Packer for blocking water

Technical field

The utility model relates to oil recovery technique field, oil field, relates in particular to the packer that a kind of oil well pressure measurement, water blockoff are used.

Background technology

At present, it is more with the packer form that blocks water to be used for pressure measurement, and principle is close substantially, all be the pressure energy power of holding by shear pin power control packer, under the constant situation of basic functional principle, it is simpler to design a kind of structure, packer more easily is installed, will be brought very big facility to production operation.

Summary of the invention

The purpose of this utility model is a deficiency on the Y341 class packer construction in order to overcome current version, a kind of oil well pressure measurement, Packer for blocking water of more reasonable structure are provided, this oil well pressure measurement, Packer for blocking water greatly reduce the cost of manufacturing of instrument, make instrument lighter and handier, install more convenient.

The technical solution of the utility model is:

Packing element, throw-out collar, overcoat, deblocking shear pin seat are set on the central tube successively, jump ring is fixedly installed on the throw-out collar, throw-out collar is fixed on the central tube by the unpacking shear pin, and deblocking shear pin seat is fixed on the central tube, and overcoat is fixed on the deblocking shear pin seat by the deblocking shear pin.

The course of work of the present utility model and principle:

After going into the well, pressurization in the central tube, under pressure, throw-out collar is up, and the unpacking shear pin is cut off, and the compression packing element sets, the external tooth of jump ring and the engagement of the inner teeth of overcoat; Because of overcoat is fixed on the deblocking shear pin seat by the deblocking shear pin, deblocking shear pin seat and central tube are fixed, and therefore, when venting central tube internal pressure, the power of keeping packing element is by the control of deblocking shear pin, and packing element no longer reclaims.

During deblocking, on carry central tube, under the acting in conjunction of packing element and sleeve friction power and packing element top liquid column hydrostatic pressure, the deblocking shear pin is cut off, the packer deblocking, packing element resets.

Part described in the utility model; have for the assembly of a plurality of parts; done description and the protection that maximum simplification is beneficial to patent under the situation that does not influence the description of its principle and structure, the professional can design this pressure measurement, Packer for blocking water according to the description on the patent.

The beneficial effects of the utility model are: simple in structure, in light weight, easy for installation.

Description of drawings,

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

Wherein, 1-central tube; 2-packing element; 3-throw-out collar; 4-unpacking shear pin; 5-jump ring; 6-overcoat; 7-deblocking shear pin; 8-deblocking shear pin seat.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

See also shown in Figure 1, present embodiment is bycentral tube 1, packing element 2, throw-outcollar 3, unpacking shear pin 4,jump ring 5, overcoat 6, deblocking shear pin 7 and deblockingshear pin seat 8 are formed, unpacking shear pin 4 directly is fixed on throw-outcollar 3 on thecentral tube 1,jump ring 5 is fixedly mounted on the throw-outcollar 3, deblockingshear pin seat 8 is fixed on thecentral tube 1, and overcoat 6 is fixed on the deblockingshear pin seat 8 by deblocking shear pin 7; Throw-outcollar 3, overcoat 6, deblockingshear pin seat 8,central tube 1 are formed hydraulic cavities, finish setting of packer atcentral tube 1 set hole feed liquor.

In the utility model, packing element 2 is at least one with the quantity ofjump ring 5; Between deblockingshear pin seat 8 and thecentral tube 1 for being threaded or otherwise fixedlying connected.

The utility model is simple in structure, brings very big facility for product processing and fabricating and production operation.

Claims (3)

1, a kind of oil well pressure measurement, Packer for blocking water, form by central tube (1), packing element (2), throw-out collar (3), unpacking shear pin (4), jump ring (5), overcoat (6), deblocking shear pin (7) and deblocking shear pin seat (8), it is characterized in that: unpacking shear pin (4) directly is fixed on throw-out collar (3) on the central tube (1), deblocking shear pin seat (8) is fixed on the central tube (1), and overcoat (6) is fixed on the deblocking shear pin seat (8) by deblocking shear pin (7).

2, oil well pressure measurement according to claim 1, Packer for blocking water is characterized in that: packing element (2) is at least one with the quantity of jump ring (5).

3, oil well pressure measurement according to claim 1, Packer for blocking water is characterized in that: between deblocking shear pin seat (8) and the central tube (1) for being threaded.

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