CN202611653U - Annular mechanical packer for oil-gas well - Google Patents
Annular mechanical packer for oil-gas well Download PDFInfo
- Publication number
- CN202611653U CN202611653U CN 201220150632 CN201220150632U CN202611653U CN 202611653 U CN202611653 U CN 202611653U CN 201220150632 CN201220150632 CN 201220150632 CN 201220150632 U CN201220150632 U CN 201220150632U CN 202611653 U CN202611653 U CN 202611653U
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- China
- Prior art keywords
- packer
- packing
- equilibrated valve
- seat
- lower contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an annular mechanical packer for an oil-gas well, which relates to the technical field of the packer, and the annular mechanical packer comprises a pressure balance device and a seat packing device, wherein the pressure balance device comprises a pressure balance valve; the seat packing device comprises a rubber drum seat, a rubber drum, a cone, slips, a central pipe, a centering seat and a lower connector A; the pressure balance valve, the central pipe, the rubber drum seat, the rubber drum, the cone, the slips, the centering seat and the lower connector A are sequentially connected with one another from top to bottom; the pressure balance valve is connected to the upper end of the central pipe and above the rubber drum seat; and a seal head in the pressure balance valve is matched with a lower connector B in the pressure balance valve in a plugging way. A way for descending a coiled tubing in one step in the well to be moved and located for multiple times so as to pack different layers is adopted, and a multi-reservoir oil-gas well can be gradually and annularly packed, so that the layered acidified fracturing construction can be conveniently carried out after the layer-to-layer abrasive perforating.
Description
Technical field
The utility model relates to the packer technology field, exactly relates to a kind of oil gas well with annular space machinery packing packer.
Background technology
There are a plurality of payzones in the vertical in domestic majority oil-gas reservoir; And more is thin interbed, have in addition reach more than 5 layers, in order to improve single well productivity and oil gas field ultimate recovery; After the oil gas well drilling construction was accomplished, implementing fracture acidizing was the important modification measures of realizing well production increment.To the well that adopts sleeve pipe to accomplish, present stage mainly contains dual mode, and a kind of is to adopt multiple packer packing separate stratum fracfturing in the sleeve pipe, opens sliding sleeve through pitching, successively transforms final combination producing from bottom to top.
Like notice of authorization number is CN201778799U; Notice of authorization day is that the Chinese patent document on March 30th, 2011 discloses a kind of oil and gas well underground straddle packing layer-by-layer fracture acidizing tool tubular column structure; Relate to the downhole tool manufacturing technology field that well production increment is transformed; Designed a kind of oil and gas well underground straddle packing layer-by-layer fracture acidizing tool tubular column structure that can realize multilayered reservoir fracture acidizing construction successively; The utility model successively attachment security give up device, circulating valve, locator, righting type hydraulic anchor, upper packer, on adjust short circuit, sandblast and spray sour device, adjust short circuit, lower packet, centralizer down; Can solve the prior art raising the output and transform the not strong problem of layer position specific aim, have characteristic of simple structure.
But with above-mentioned patent documentation is the prior art of representative, not enough below still existing: 1) once the interval of construction transformation is limited, is no more than 5 layers at most.2) it is complicated to go into the well casing post in the sleeve pipe, and instrument is many and external diameter is big, and the sand card takes place easily, is unfavorable for that the later stage plays drilling and repairing well.
And for example notice of authorization number is CN2692340, and notice of authorization day is that the Chinese patent document on April 13rd, 2005 discloses the hydraulic double cylinder that a kind of petroleum industry uses and do not have anchoring packer, is applicable to the oil production by layer technology of oil well.The utlity model has Hydraulic Equilibrium Mechanism, setting mechanism and screw thread and go on foot tight mechanism, install at two ends, lower contact.Setting mechanism is made up of packing element and hydraulic cylinder, and upper piston is installed in the hydraulic cylinder; Inner central tube, top exterior central tube and bottom exterior central tube wear wherein, and inner central tube is connected with upper and lower joint; The top exterior central tube is connected with Hydraulic Equilibrium Mechanism, and the bottom exterior central tube goes on foot tight mechanism with screw thread and is connected, and setting mechanism is set up a hydraulic cylinder.Owing to increased a hydraulic cylinder, the hydraulic cylinder compression area is strengthened, the required pressure of packer setting reduces.Have and set the function that pressure is low, the down-hole string safety factor is high.Guaranteed packer can safety, low pressure sets.
But with above-mentioned patent documentation is the prior art of representative, and packer cannot put to put on repeatedly and set deblocking at the down-hole diverse location, cannot to different payzones respectively packing implement the fracture acidizing raising the output and transform.
Another kind is to adopt many cover spraycans abrasive perforating from bottom to top, adds the sand construction through sleeve pipe and oil pipe.Though this tubing string external diameter is less, simple in structure, there is effectively packing of interlayer, transformation scale and limited in one's ability.
The utility model content
For solving the problems of the technologies described above; The utility model provides a kind of oil gas well with annular space machinery packing packer; The utility model adopts the coiled tubing repeatedly mode of running fix packing different layers position of once going into the well; Can realize multilayered reservoir oil gas well is carried out packing annular space successively, thereby be convenient to successively carry out the separate layer acid treatment pressing crack construction behind the abrasive perforating.
The utility model is realized through adopting following technical proposals:
A kind of oil gas well comprises pressure equaliser and sets packing device that with annular space machinery packing packer it is characterized in that: said pressure equaliser comprises equilibrated valve; Setting packing device comprises glue tube base, packing element, cone, slips, central tube, sets upright seat and lower contact one; Said from top to bottom equilibrated valve, central tube, glue tube base, packing element, cone, slips, set upright seat, lower contact one is linked in sequence; Said equilibrated valve is connected the central tube upper end, and is positioned on the glue tube base; Seal head in the equilibrated valve cooperates with lower contact two pulling and inserting types in the equilibrated valve.
Said central tube upper end is through the lower contact two of the equilibrated valve that is threaded.Central tube is provided with keyway.
Said pressure equaliser with set packing device and be connected with screw thread from top to bottom.
The lower end conical surface of said cone is used for awl and goes in the slips.
The said frictional force of seat through wiper block and internal surface of sleeve pipe of setting upright is to put on the packer to put to set deblocking opposite force is provided.
Said lower contact one is used to connect lower tool or tubing string.
Compared with prior art, the beneficial effect that the utility model reached is following:
1, be that the prior art of representative is compared with notice of authorization number for the CN201778799U patent documentation; The packer that the utility model adopts comprises pressure equaliser and sets packing device; Seal head in the equilibrated valve cooperates with lower contact two pulling and inserting types in the equilibrated valve; Transferring tubing string when making packer setting when equilibrated valve like this, the seal head in the equilibrated valve inserts in the lower contact two of equilibrated valve, makes sealing in the packing organ pipe; Packing pipe outer tunnel in the packer pipe up and down; Through the upper lifting pipe post seal head in the equilibrated valve is extracted from the lower contact two of equilibrated valve when needing deblocking, made pressure balance on the packer, be convenient to deblocking; Thereby the described packer of the utility model can put to put on repeatedly and set deblocking at the down-hole diverse location, can to different a plurality of payzones respectively packing implement the fracture acidizings raising the output and transform; And have characteristic of simple structure, adopt the utility model to can be the raising the output hypotonic, that poor efficiency thin layer oil gas reservoir development provides economical and efficient and transform means.
Simultaneously, the setting upright seat and can let packer be between two parties of the utility model setting, the assurance tubing string is not inclined to one side, is to put on the packer to put to set deblocking opposite force is provided through the frictional force between itself and the internal surface of sleeve pipe simultaneously; The equilibrated valve that is provided with makes pressure balance on the packer through the upper lifting pipe post when packer needs deblocking, be convenient to deblocking.
Is that the prior art of representative is compared with notice of authorization number for the CN2692340 patent documentation; Seal head in the utility model in the equilibrated valve cooperates with lower contact two pulling and inserting types in the equilibrated valve; Transferring tubing string when making packer setting when equilibrated valve like this, the seal head in the equilibrated valve inserts in the lower contact two of equilibrated valve, makes sealing in the packing organ pipe; Packing pipe outer tunnel in the packer pipe up and down; Through the upper lifting pipe post seal head in the equilibrated valve is extracted from the lower contact two of equilibrated valve when needing deblocking, made pressure balance on the packer, be convenient to deblocking; Thereby the described packer of the utility model can put to put on repeatedly and set deblocking at the down-hole diverse location, can to different a plurality of payzones respectively packing implement the fracture acidizings raising the output and transform; And have characteristic of simple structure, adopt the utility model to can be the raising the output hypotonic, that poor efficiency thin layer oil gas reservoir development provides economical and efficient and transform means.
2, in the utility model, central tube is provided with keyway, on tubing string, puts to let slip to make packer setting or deblocking in the journey.
Description of drawings
To combine the Figure of description and the specific embodiment that the utility model is done further to specify below, wherein:
Fig. 1 is the structural representation of the utility model in the down-hole
Mark among the figure:
1, equilibrated valve, 2, glue tube base, 3, packing element, 4, cone, 5, slips, 6, central tube, 7, set upright seat, 8, lower contact one, 9, seal head, 10, lower contact two, 11, wiper block.
The specific embodiment
Embodiment 1
The utility model discloses a kind of oil gas well with annular space machinery packing packer, comprise pressure equaliser and set packing device that said pressure equaliser comprises equilibrated valve 1; Setting packing device comprises glue tube base 2, packing element 3, cone 4, slips 5, central tube 6, sets upright seat 7 and lower contact 1; Said from top to bottom equilibrated valve 1, central tube 6, glue tube base 2, packing element 3, cone 4, slips 5, set upright seat 7, lower contact 1 is linked in sequence; Said equilibrated valve 1 is connected central tube 6 upper ends, and is positioned on the glue tube base 2; Seal head 9 in the equilibrated valve 1 cooperates with lower contact 2 10 pulling and inserting types in the equilibrated valve 1.
Embodiment 2
With reference to Figure of description 1, the preferred forms of the utility model is: comprise pressure equaliser and set packing device, said pressure equaliser comprises equilibrated valve 1; Setting packing device comprises glue tube base 2, packing element 3, cone 4, slips 5, central tube 6, sets upright seat 7 and lower contact 1; Said from top to bottom equilibrated valve 1, central tube 6, glue tube base 2, packing element 3, cone 4, slips 5, set upright seat 7, lower contact 1 is linked in sequence; Said equilibrated valve 1 is connected central tube 6 upper ends, and is positioned on the glue tube base 2; Seal head 9 in the equilibrated valve 1 cooperates with lower contact 2 10 pulling and inserting types in the equilibrated valve 1.Said central tube 6 upper ends are through the lower contact 2 10 of the equilibrated valve 1 that is threaded.Central tube 6 is provided with keyway.Said pressure equaliser with set packing device and be connected with screw thread from top to bottom.The lower end conical surface of said cone 4 is used for awl and goes in the slips 5.The said frictional force of seat 7 through wiper block 11 and internal surface of sleeve pipe of setting upright are to put on the packer to put to set deblocking opposite force is provided.
The equilibrated valve 1 that is provided with is being transferred tubing string when making packer setting; Seal head 9 in the equilibrated valve 1 inserts in the lower contact 2 10 of equilibrated valve 1; Make sealing in the packing organ pipe, packing pipe outer tunnel in the packer pipe up and down, through the upper lifting pipe post seal head 9 in the equilibrated valve 1 is extracted from the lower contact 2 10 of equilibrated valve 1 when needing deblocking; Make pressure balance on the packer, be convenient to deblocking; Glue tube base 2 is used to support packing element 3; Packing element 3 is through extruding expansion packing central tube and casing annulus; The cone 4 lower end conical surfaces are used for boring slips 5 intramedullary expansion slips 5 and set, and after slips 5 set, cone 4 upper surfaces extruding packing element 3 applied setting force; There is the length keyway central tube 6 upper ends through the lower contact 2 10 of the equilibrated valve 1 that is threaded on it, on tubing string, put to let slip to make packer setting or deblocking in the journey; Set upright seat and 7 can make packer be in the middle position, and the frictional force through wiper block 11 and internal surface of sleeve pipe is to put on the packer to put to set deblocking opposite force is provided; Lower contact 1 is used to connect lower tool or tubing string.
The predominant use of the utility model: in work progress; The device of the utility model has following important function: the equilibrated valve 1 of setting can transferred tubing string when making packer setting; Seal head 9 in the equilibrated valve 1 inserts in the lower contact 2 10 of equilibrated valve 1; Make sealing in the packing organ pipe, packing pipe outer tunnel in the packer pipe up and down, through the upper lifting pipe post seal head 9 in the equilibrated valve 1 is extracted from the lower contact 2 10 of equilibrated valve 1 when packer needs deblocking; Make pressure balance on the packer, be convenient to deblocking; Packer is arranged on the lower end of equilibrated valve 1, through on put and put row into and set and deblocking, construct thereby separate payzone.
Embodiment 3:
The activities of the utility model: the utility model is made up of following structure when reality is used: be coiled tubing topmost; Next coming in order connect that CT connector, machinery are given up, hydraulic pressure is given up, centralizer, spray gun, equilibrated valve 1, packer, collar locator, the guide shoe of connection bottom of tubing string; Above-mentioned each parts are formed tubing string to be threaded with above-mentioned parts, arrive certain depth position in the oil gas well down-hole casing down with coiled tubing working vehicle; Through collar locator location, on put and put tubing string and make packer setting, the packing bottom is the construction layer position; Simultaneously, the spray gun that is arranged on packer top has also been aimed at preparatory perforation and fracture acidizing layer position, and this moment, equilibrated valve 1 cut out the inner passage of its underpart tubing string; Gang up with casing annulus in the tubing string more than the packer, begin construction with fracturing unit truck through ground connecting line float amount low pressure then, at first instead replace base fluid through sleeve pipe; Anti-when base fluid for after putting in place, pump into load fluid through coiled tubing, under the throttling action of spray tip; Spray gun penetrates sleeve pipe and contains the sand flow body at a high speed; Penetrate and wear pipe, carry out anti-circulation well cleanup then and wash out unnecessary sand grains, then pump into acid solution through the little discharge capacity of coiled tubing; Go into acid solution or load fluid through the sleeve pipe large discharge pump simultaneously, and then reach highly pressurised liquid directly to penetrating the purpose that the interval that wears pipe is constructed and transformed; After lower floor transformed and finishes, fracturing unit truck termination of pumping pressure release then, started the coiled tubing car, and with carrying on the tubing string, this moment, equilibrated valve 1 was communicated with packer pipe external and internal pressure up and down with moving on the tubing string, transferred tubing string again, and packer leaves sleeve pipe, removes packing; Carry coiled tubing on the coiled tubing car continues,, make spray gun aim at second construction interval, put on once more and put tubing string through the location of collar locator, packer setting, this moment can be to spray gun institute to the interval transformation of constructing; Repeat said method, can carry out modification operation a plurality of oil gas intervals of an oil well.
Claims (4)
1. an oil gas well comprises pressure equaliser and sets packing device that with annular space machinery packing packer it is characterized in that: said pressure equaliser comprises equilibrated valve (1); Setting packing device comprises glue tube base (2), packing element (3), cone (4), slips (5), central tube (6), sets upright seat (7) and lower contact one (8); Said from top to bottom equilibrated valve (1), central tube (6), glue tube base (2), packing element (3), cone (4), slips (5), set upright seat (7), lower contact one (8) and be linked in sequence; Said equilibrated valve (1) is connected central tube (6) upper end, and is positioned on the glue tube base (2); Seal head (9) in the equilibrated valve (1) cooperates with lower contact two (10) pulling and inserting types in the equilibrated valve (1); Said central tube (6) upper end is through the lower contact two (10) of the equilibrated valve that is threaded (1); Central tube (6) is provided with keyway, said pressure equaliser with set packing device and be connected with screw thread from top to bottom.
2. a kind of oil gas well according to claim 1 is with annular space machinery packing packer, and it is characterized in that: the lower end conical surface of said cone (4) is used for awl and goes in the slips (5).
3. a kind of oil gas well according to claim 1 is characterized in that with annular space machinery packing packer: the said frictional force of seat (7) through wiper block (11) and internal surface of sleeve pipe of setting upright is to put on the packer to put to set deblocking opposite force is provided.
4. a kind of oil gas well according to claim 1 is with annular space machinery packing packer, and it is characterized in that: said lower contact one (8) is used to connect lower tool or tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220150632 CN202611653U (en) | 2012-04-11 | 2012-04-11 | Annular mechanical packer for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220150632 CN202611653U (en) | 2012-04-11 | 2012-04-11 | Annular mechanical packer for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611653U true CN202611653U (en) | 2012-12-19 |
Family
ID=47345362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220150632 Expired - Lifetime CN202611653U (en) | 2012-04-11 | 2012-04-11 | Annular mechanical packer for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563998A (en) * | 2014-09-04 | 2015-04-29 | 杰瑞能源服务有限公司 | Multistage fracturing tool pipe column of continuous oil pipe and construction method |
-
2012
- 2012-04-11 CN CN 201220150632 patent/CN202611653U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563998A (en) * | 2014-09-04 | 2015-04-29 | 杰瑞能源服务有限公司 | Multistage fracturing tool pipe column of continuous oil pipe and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |