CN201661255U - Device for rock debris annulus re-injection - Google Patents
Device for rock debris annulus re-injection Download PDFInfo
- Publication number
- CN201661255U CN201661255U CN2010201076490U CN201020107649U CN201661255U CN 201661255 U CN201661255 U CN 201661255U CN 2010201076490 U CN2010201076490 U CN 2010201076490U CN 201020107649 U CN201020107649 U CN 201020107649U CN 201661255 U CN201661255 U CN 201661255U
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- Prior art keywords
- injection
- annulus
- annular space
- landwaste
- casting
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Abstract
The utility model discloses a device for rock debris annulus re-injection, which selects a water injection well to be a re-injection well, an internal annulus (9) is formed between a water injection pipeline (7) of the middle and a 9-5/8''casting (8), and an external annulus (11) is formed between the 9-5/8'' casting (8) and a 13-3/8''casting (8). The utility model is characterized in that a water injection pipeline isolating valve (2), a pressure control valve (3), an internal annulus isolating valve (4), an internal annulus pressure gauge (5) are arranged between an extension pipe (1) of the water injection pipeline (7) and a discharge pipeline (6) of the internal annulus (9) for the rock debris annulus re-injection operation technology of the offshore oil drilling; when the external annulus (11) arranged formed between the 9-5/8''casting (8) and the 13-3/8''casting (8) carries out rock debris re-injection, an adjustment pressure valve allows the discharge pressure to pressurize the internal annulus so as to prevent the rock debris re-injection size from flowing the internal annulus, the space of the internal annulus can be protected and the completeness of the water injection well can be protected.
Description
Technical field:
The utility model relates to offshore oilfield drilling technology field, is a kind of device that can carry out the re-injection of landwaste annular space again without casing repairing specifically, is used for the landwaste re-injection operation of offshore oilfield drilling well.
Background technology:
Over past ten years; constantly perfect with laws and regulations of improving constantly along with public's environmental protection consciousness; adopt various measures as far as possible landwaste and some other discarded object that drilling well is produced of industrial gas oil cuts to bone, so that protect environment and public safety better.Drilling well, produce refuse mainly refer to after well drilling detritus, drilling well finish residue mud, produce refuses such as sand, cargo tank mud.
The processing of offshore drilling discarded object only limits to discharging, re-injection or transports back on the bank and handle.The offal treatment mode is varied, but concludes, and the discarded object that produces in offshore drilling and the manufacturing process is nothing more than three kinds of processing modes are arranged: the one, and qualified discharge, the 2nd, transport back on the bank and handle, the 3rd, be recycled into the stratum.
In first kind of mode,, be difficult to by various circles of society's approval to handling thoroughly because in the processing procedure before mud and landwaste efflux, use a large amount of chemical substances.So new oilfield waste thing processing scheme does not generally consider to handle row sea, back up to standard.
Second kind of processing method also is landwaste processing method commonly used at present, is to transport landwaste back land, through burning, or other harmless treatment, residue is buried, or be processed into the material of other form.This way reduces the pollution of rubbish to environment to a certain extent, but can not realize " zero-emission " of waste treatment, and in processing procedure, the usually new pollution of other form of association.For example, can generate electricity or, can produce bioxin as cement additive though burn, harmful; Though the discarded object landfill can temporarily be can't see dirt,, not only taken up an area of but also may contaminated environment, to deal with improperly, sewage can permeate the ground, and influences the water quality of underground water source.In addition,, bring very big influence, increased operating cost to operation on the sea because the restriction of operating condition when operation is carried out, is adopted this method at sea.
The third processing method is to be recycled into mud, landwaste and other discarded object in the stratum with enclosed construction under condition of high voltage, discarded object " is come; return and where go " wherefrom, is a kind of processing mode near " zero-emission ", progressively obtains the approval of society.
When the third method of employing was carried out the landwaste re-injection, general way was subdrilling a bite reinjection well, and the landwaste that remaining well produces in drilling process is recycled in the reinjection well again.But for the oil field that is in the development phase, often there is not special reinjection well.In order to handle the landwaste that drilling well produces, avoid simultaneously producing well is impacted, generally select for use water injection well as reinjection well, landwaste injects the stratum from the outer shroud backlash.Water injection well has its characteristics, and because of long-term re-injection water, and water quality is corroded sleeve pipe easily, causes the sleeve pipe thorn to leak easily.When re-injection, the pressure of re-injection slurries is higher, and slurries will enter interior annular space from outer annular space.The inside, annular space space in the slurries of annular space are trapped in for a long time in entering, As time goes on, micron order cutting grain in the slurries is with sedimentation, on the packer of annular space, stop up packer, breed bacteria in being stacked into gradually, on the one hand owing to form retention areas, the corrosion of annular space sleeve pipe on the other hand, also brings significant problem for later workover treatment in quickening.Thereby in order to carry out the re-injection of landwaste annular space, must carry out casing salvaging is workover treatment, but such cost height, and stop production, bring very big economic loss.
Summary of the invention:
The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, and a kind of device that is used for the re-injection of landwaste annular space is provided, mainly solve existing landwaste annular space re-injection technology easily quicken in the annular space sleeve pipe corrosion and adopt problems such as casing repairing cost height, stopping production economic loss are big.
In order to achieve the above object, the utility model is achieved in that a kind of device that is used for the re-injection of landwaste annular space, select for use water injection well as reinjection well, middle waterflood-transmission line and 9-5/8 " form between the sleeve pipe in annular space; 9-5/8 " sleeve pipe and 13-3/8 " form outer annular space between the sleeve pipe, its special character is installation waterflood-transmission line isolating valve, pressure-control valve, interior annulus isolation valve, interior annular pressure table between the outlet line of the prolongation pipe of waterflood-transmission line and interior annular space.
Compared with the prior art a kind of device that is used for the re-injection of landwaste annular space described in the utility model has following good effect: 1, adopt device of the present utility model, by adjusting the outlet pressure of pressure-control valve, adopt pressure balance principle, the malleation that has kept interior annular space, the slurries of avoiding just annotating in the outer shroud backlash enter interior annular space, avoid the micron order cutting grain in the slurries that packer is stopped up in sedimentation, the corrosion of annular space sleeve pipe in slowing down; 2, guarantee carrying out smoothly of later workover treatment; 3, do not need casing repairing can carry out the re-injection of landwaste annular space smoothly, thereby reduce cost, reduce economic loss.
Description of drawings:
Fig. 1 is a water injection well annular space re-injection structural representation of the present utility model;
Fig. 2 is a control section connection diagram of the present utility model.
The specific embodiment:
In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and describe a kind of device that is used for the re-injection of landwaste annular space of the utility model in detail.
Embodiment 1, referring to Fig. 1,2, select for use water injection well as the landwaste reinjection well, the centre is a waterflood-transmission line 7, middle waterflood-transmission line 7 and 9-5/8 " form between the sleeve pipe 8 in annular space 9; 9-5/8 " sleeve pipe 8 and 13-3/8 " form outer annular space 11 between the sleeve pipe 10; between the outlet line 6 of the prolongation pipe 1 of waterflood-transmission line 7 and interior annular space 9, waterflood-transmission line isolating valve 2, pressure-control valve 3, interior annulus isolation valve 4, interior annular pressure table 5 are installed successively; form a kind of device that is used for the re-injection of landwaste annular space, by adjusting pressure-control valve realization inner and outer rings pneumatics dynamic balance.
A kind of device that is used for the re-injection of landwaste annular space of the present utility model when operation, follows these steps to control landwaste re-injection slurries and does not enter interior annular space: the device that is used for the re-injection of landwaste annular space that adopts above-mentioned installation; The re-injection pressure of the outer annular space of prediction can adopt calculation mode, also can obtain according to the manometric reading of outer annular space; Open the waterflood-transmission line isolating valve; Open interior annulus isolation valve; Adjust pressure-control valve, pressure balance is annotated in the reading of annular pressure table and outer shroud backlash in making, and annular pressure is a malleation in promptly guaranteeing; Begin the landwaste of annular space re-injection outward slurries; promptly at 13-3/8 " sleeve pipe and 9-5/8 " outer annular space between the sleeve pipe carries out the landwaste re-injection; the permission outlet pressure of while adjustable pressure control valve; internally annular space pressurizes; guarantee that landwaste re-injection slurries are less than annular space in flowing into; annular space space in the protection, the integrality of protection water injection well.
Claims (1)
1. device that is used for the re-injection of landwaste annular space, select for use water injection well as reinjection well, middle waterflood-transmission line (7) and 9-5/8 " form between the sleeve pipe (8) in annular space (9); 9-5/8 " sleeve pipe (8) and 13-3/8 " form outer annular space (11) between the sleeve pipe (10), it is characterized in that installation waterflood-transmission line isolating valve (2), pressure-control valve (3), interior annulus isolation valve (4), interior annular pressure table (5) between the outlet line (6) of the prolongation pipe (1) of waterflood-transmission line (7) and interior annular space (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201076490U CN201661255U (en) | 2010-01-20 | 2010-01-20 | Device for rock debris annulus re-injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201076490U CN201661255U (en) | 2010-01-20 | 2010-01-20 | Device for rock debris annulus re-injection |
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| CN201661255U true CN201661255U (en) | 2010-12-01 |
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| CN2010201076490U Expired - Fee Related CN201661255U (en) | 2010-01-20 | 2010-01-20 | Device for rock debris annulus re-injection |
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| CN102128011A (en) * | 2010-01-20 | 2011-07-20 | 烟台杰瑞石油开发有限公司 | Rock debris annulus reinjection device and control method thereof |
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2010
- 2010-01-20 CN CN2010201076490U patent/CN201661255U/en not_active Expired - Fee Related
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Address after: 264003 No. 7, Ma Tin Avenue, Laishan District, Shandong, Yantai Patentee after: Jereh Energy Services Co., Ltd. Address before: 264003 Yantai street, Laishan District, Shandong, No. 7 AUCMA Patentee before: Yantai Jereh Energy Petroleum Development Co.,Ltd. |
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