CN201021613Y

CN201021613Y - A separator for ultra-expansion thermal exploration

Info

Publication number: CN201021613Y
Application number: CNU200720010481XU
Authority: CN
Inventors: 赵广友; 周国宁; 迟凤杰
Original assignee: LIAONING KUAK PETROLEUM EQUIPMENT CO Ltd
Current assignee: LIAONING KUAK PETROLEUM EQUIPMENT CO Ltd
Priority date: 2007-02-07
Filing date: 2007-02-07
Publication date: 2008-02-13
Anticipated expiration: 2017-02-07

Abstract

The utility model relates to a thermoseal packer in the steam injecting oil extraction, in particular to a super-expansive thermoseal packer. The utility model consists of a sealing main body 12 with a central pore canal, a spring clamping body 3 in the main body, a sealing cylinder body 1 and a sealing sleeve 2 arranged on the spring clamping body 3; an air outlet is drilled on a sealing main body, the taper sealing body is a cone body. When the utility model is used, the steam can make the taper sealing body prop up the sealing sleeve to realize the seating sealing; when the injecting stops, the sealing sleeve can be unsealed automatically. Since the device is arranged with a strengthening spring and spring body components, the unsealing of the seating sealing is rapid and completed, the sealing is good, the seating sealing is close, and the utility model can replace the prior thermoseal packer.

Description

A kind of super expansion thermal packer

Technical field:

The utility model relates to steam injection oil recovery thermal packer; Especially a kind of super expansion thermal packer.

Background technology:

Most of oil wells need to carry out thickened oil recovery by the steam soak mode in the thickened oil recovery process, the general thermometal expansion fashion that uses when steam injection, can improve output effectively to the oil reservoir steam in jection, yet, during this class packer uses, because the high temperature more than 300 ℃ causes packer sealing not tight easily, particularly when playing envelope, meeting is because of down-hole casing pressure height, and packer itself can not shrink and lose deblocking cartridge function, cause packing element to be out of shape bag, may cause card well accident.

Summary of the invention:

The purpose of this utility model is to provide a kind of super expansion thermal packer, and this packer set is tight, and deblocking is reliable, can be widely used in the thick oil heat production steam injection well.

The novel purpose of this reality is achieved in that this device comprises the sealed body that has central duct, and an elasticity card body is arranged in main body, above the elasticity card body sealing shroud and sealed cylinder block is housed; Be drilled with venthole and cone seal body on the hole wall of described sealed body below, cone seal volume surrounding sheath is sealed on sealed body and the outer protective sleeve with O-ring seal, one ring packing colloid is arranged in the sheath, also be equipped with an elastic sealed body in this colloid, this ring packing colloid is close to the venthole of sealed body, wherein, the cone seal body, elastic sealed body annular sealing member and sheath are a power cavity structure, and described sealing shroud is that single head expands, and the square tooth is arranged on the sheath.

Described cone seal body is one to be made of metal material, and wherein an end is a bullet, and this cone angle is the 15-75 degree, and the chock angle contacts with elasticity card body, and power-assisted deblocking spring is housed in the described elastic body.

The utility model operating principle is:

Steam injection pipeline and sealed cylinder block link together by the screw thread box cupling and are lowered in the oil well during use, by steam injection pipeline high-temperature steam are injected in this packer body.The injection high-temperature steam is run out of from the packer venthole and is acted on above the annular sealing member, promoting the cone seal body moves up, seal is inserted in the elastic body, sealing shroud is expanded to the sleeve pipe direction, meanwhile install in annular sealing member under the effect of elastic body HTHP, also expanding rapidly and quickening to promote the cone seal body makes sealing shroud seat envelope rapidly.

During deblocking, because temperature descends in the sealed body, elastic body shrinks automatically, volume diminishes gradually, power assistant spring and setting back, the motive force that is produced can act on again on sealing shroud and the elasticity card body, and the conical surface that promotes the cone seal body causes the cone seal body to lower slider, thereby realizes the packer deblocking.

Because the cone seal body that the utility model is packed in the sealed body outside, head on elasticity card body, when injecting high-temperature steam, packer can the cone seal body be inserted in the elasticity card body annular sealing member in the power cavity and elastic body rapidly like this by the steam duct, and in time sealing shroud is propped up, and be seated to and play the effect of shutoff sleeve pipe on the internal surface of sleeve pipe, because elastic body has adopted the manufacturing of a kind of elastomeric material preferably, therefore, this device can quicken to expand under hot conditions, the propulsive force of cone seal body is strengthened, be located at the packing element above the sealing shroud in addition, adopted the single head expansion fashion, and in the elasticity card body in sealing shroud power assistant spring is housed, like this can be when packer resets the convenient function that plays smooth deblocking.

The screw thread of sheath top is buckled for rectangular teeth and is fixed on above the sealed body, can play safety effect, guarantees that packer has sealing function.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Among the figure by 1, sealed cylinder block, 2, sealing shroud, 3, elasticity card body, 4, the cone seal body, 5, sealing ring, 9, elastic body, 10, annular sealing member, 11, sheath, 12, sealed body, 13, power assistant spring forms.

Below in conjunction with accompanying drawing the utility model is further specified.

The specific embodiment

As shown in the figure: sealed body 12 is that pipe one end that has inner duct is a box for the pin thread other end, main body has a sealed cylinder block 1 outward, sealing shroud 2 and sealed cylinder block 1 are housed above the elasticity card body 3, be drilled with the notes steam vent on the hole wall of described sealed body below, this venthole communicates with sheath 11, be contained in the cone seal body 4 of sealed body below, one end is a taper surface, conical surface angle is the 15-75 degree, sealing shroud 2 in the sealed cylinder block 1 of cone seal body 4 and top contacts with the elasticity card body 3 in the sealing shroud, wherein sealing shroud 2 is to make of the polytetrafluoroethylene (PTFE) elastomeric material, it expands for single head, can seal by very fast seat at hot conditions lower sleeve gasket 2, the sealing shroud other end is clamped between sealed cylinder block 1 and the elastic body 3.In elasticity card body 3 inside grooves a power-assisted spring 13 is housed, the effect of this spring is when stopping steam injection, and temperature reduces, and sealing shroud 2 shrinks, and under spring 13 automatically resets situation, cone seal body 4 to lower slider, is realized deblocking.

Claims

1. a super expansion thermal packer includes the sealed body (12) of being with central duct, and an elasticity card body (3) is arranged in the main body, sealing shroud (2) and sealed cylinder block (1) is housed above the elasticity card body (3) forms; It is characterized in that: be drilled with venthole and cone seal body (4) on the hole wall of described sealed body (12) below, there is sheath (11) to be sealed between sealed body and the outer protective sleeve (11) on cone seal body (4) skin with O-ring seal, one ring packing colloid (10) is arranged in the sheath, also be equipped with an elastic sealed body in this colloid, this ring packing colloid is close to the venthole of sealed body, wherein, cone seal body (4), elastic body (9), annular sealing member (10) and sheath (11) are formed a power cavity, described sealing shroud (2) expands for single head, and sheath has rectangular teeth on (1).

2. a kind of super expansion thermal packer according to claim 1, it is characterized in that: described cone seal body (4) is that a wherein end of making of metal material is a bullet, this cone angle is the 15-75 degree, cone tip contacts with elasticity card body (3), and power-assisted deblocking spring (13) is housed in the described elastic body (3).