CN201671607U - Concentric double-tube separate-injection tube column with ground water distribution for high-inclination well - Google Patents
Concentric double-tube separate-injection tube column with ground water distribution for high-inclination well Download PDFInfo
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- CN201671607U CN201671607U CN2010201654753U CN201020165475U CN201671607U CN 201671607 U CN201671607 U CN 201671607U CN 2010201654753 U CN2010201654753 U CN 2010201654753U CN 201020165475 U CN201020165475 U CN 201020165475U CN 201671607 U CN201671607 U CN 201671607U
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Abstract
The utility model discloses a concentric double-tube separate-injection tube column with ground water distribution for a high-inclination well, which is applied to separated layer ground water injection of an oilfield water injection well. An oil tube at the outer layer is connected with an internal and external seal water-distributing packer and a packer, the internal and external seal water-distributing packer is positioned between an upper water injection layer and a middle water injection layer, and the packer is positioned between the middle water injection layer and a lower water injection layer; the internal and external seal water-distributing packer is provided with an external seal between the oil tube at the outer layer and a sleeve, an oil jacket communicating channel and an internal seal; the internal seal is provided with a center hole; an inserting seal section is connected at the lower end of an oil tube at the inner layer and is inserted into an internal seal center hole of the internal and external seal water-distributing packer, the lower end of the oil tube at the outer layer is connected with a sliding sleeve, the lower end of which is connected with a sieve tube, and the lower end of the sieve tube is connected with a screwed plug. The tube column achieves the effect of realizing separated layer water injection by three water injection layers. The water injection volume of each layer can be displayed, regulated and controlled as well as measured and matched without tripping; and the tube column can be convenient for seal examination.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, and particularly oil-field flooding improves the exploitation of stratum energy, is a kind of special-purpose tubing string that is used for high angle hole ground water distribution concentric double pipe stratified injection water.
Background technology
At present, each oil field is in multilayered reservoir waterflooding extraction process, generally adopt zone separate injection technical string to solve the different contradiction of pressure between layer and the layer, zone separate injection technical string commonly used mainly contains the eccentric separate injection tubing string that needs pulling to survey to join, separate injection tubing string and the ground separate injection tubing string that do not need the pulling survey to join with one heart.For high angle hole, to join difficulty big owing to the pulling of hole deviation reason is surveyed, compliance is better relatively during the ground separate injection tubing string that do not need pulling to survey to join, but most of zone separate injection technical string commonly used all is based on two sections ground separate injection tubing strings of one-level, inject Different Strata respectively through oil jacket annular space and oil pipe during water filling, can only satisfy two interval dispensing needs, be difficult to satisfy the needs of three interval dispensings.
The utility model content
The purpose of this utility model is: a kind of high angle hole ground water distribution concentric double pipe separate injection tubing string is provided, finishes the needs of the seperated layer water injection of three water filling layers.
The technical solution adopted in the utility model is: high angle hole ground water distribution concentric double pipe separate injection tubing string, mainly form by outer oil pipe, internal layer oil pipe, insertion seal section, interior external seal water distribution packer, sleeve pipe, packer, sliding sleeve, screen casing, plug and artificial bottom of a well, water filling layer, middle water filling layer and the water layer of making a bet have the artificial bottom of a well in the lower end of sleeve pipe on jacket exterior has.Outer oil pipe is arranged in sleeve pipe.It is characterized in that: be connected with an interior external seal water distribution packer and a packer on outer oil pipe, the position of interior external seal water distribution packer is between last water filling layer and middle water filling layer, and the position of packer is at middle water filling layer and make a bet between the water layer.
External seal water distribution packer has external seal between outer oil pipe and the sleeve pipe in described, and interior external seal water distribution packer has the oil jacket communication passage, in the bottom of oil jacket communication passage interior sealing is arranged, in be sealed with centre bore.The insertion seal section is connected the lower end of internal layer oil pipe and inserts in the interior center seal hole of interior external seal water distribution packer.Lower end at outer oil pipe is connected with sliding sleeve, and the lower end of sliding sleeve is connected with screen casing, and the lower end of screen casing is connected with plug.
The seperated layer water injection work progress of summary high angle hole ground water distribution concentric double pipe separate injection tubing string: consult Fig. 1.After external seal water distribution packer 4, packer 6, sliding sleeve 7, screen casing 8, plug 9 are gone into the well in outer oil pipe 1 band, just suppressing from outer oil pipe 1, interior external seal water distribution packer 4 and packer 6 set, and the oil jacket annular space is divided into three sections, continue to suppress sliding sleeve 7 is opened; Internal layer oil pipe 2 bands insert in the interior center seal hole of external seal water distribution packer 4 in seal section 3 insertions then.It is descending to promote interior sealing, and seals with inserting seal section 3, and the oil jacket communication passage on the simultaneously interior external seal water distribution packer 4 is opened.Three waterflood paths are arranged.During water filling: go up water filling layer 11 and inject by the oil jacket annular space; Middle water filling layer 12 is that the oil jacket communication passage of external seal water distribution packer 4 is injected in reaching by the annular space that outer oil pipe 1 and internal layer oil pipe 2 form; The water layer 13 of making a bet injects by internal layer oil pipe 2, sliding sleeve 7 and screen casing 8.The ball that passes through internal layer oil pipe 2 throwing minor diameters during deblocking is earlier suppressed deblocking packer 6 to packer 6; Reintroduce internal layer oil pipe 2, throw the bigger ball of straight well, suppress external seal water distribution packer 4 in the deblocking to interior external seal water distribution packer 4.In addition, packer 6 and interior external seal water distribution packer 4 are carried deblocking on also can be directly.
At first will select according to geologic requirements is the well of three interval dispensings; Determine tool types and specification then, determine the degree of depth that every instrument is lowered to according to geologic requirements at last.Only need during workover treatment be lowered to separate injection tubing string, sit packer, descend little oil pipe, can require normal water filling according to injection allocation by designing requirement.
The beneficial effects of the utility model: the utility model high angle hole ground water distribution concentric double pipe separate injection tubing string, can realize the seperated layer water injection of three water filling layers.Also have in addition:
1. every layer of water injection rate can show, regulate control as required from ground, surveys and joins without pulling;
2. can conveniently test envelope, suppress water filling from the annular space between outer oil pipe and the internal layer oil pipe during external seal water distribution packer in the check; And by the oil jacket annular pressure or do not return water and can verify.When testing packer from the water filling of internal layer oil pipe, by outer oil pipe and internal layer oil pipe annular pressure or do not return water and can verify;
3. packer all has two kinds of deblocking modes, can suppress deblocking again can on carry deblocking, safe and reliable, be not only applicable to high angle hole, again applicable to straight well, the tubing string period of validity is long.
Description of drawings
Fig. 1 is the utility model high angle hole ground water distribution concentric double pipe separate injection tubing string structural representation.
Among the figure, 1. outer oil pipe, 2. internal layer oil pipe 3. inserts seal section, 4. in external seal water distribution packer, 5. sleeve pipe, 6. packer, 7. sliding sleeve, 8. screen casing, 9. plug, 10. artificial bottom of a well, water filling layer on 11., water filling layer in 12., 13. water layers of making a bet.
The specific embodiment
Embodiment 1: with a high angle hole ground water distribution concentric double pipe separate injection tubing string is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model high angle hole ground water distribution concentric double pipe separate injection tubing string mainly is made up of outer oil pipe 1, internal layer oil pipe 2, insertion seal section 3, interior external seal water distribution packer 4, sleeve pipe 5, packer 6, sliding sleeve 7, screen casing 8, plug 9 and artificial bottom of a well 10.There are three water filling layers to need seperated layer water injection in sleeve pipe 5 outsides.These three water filling layers are respectively to go up water filling layer 11, middle water filling layer 12 and the water layer 13 of making a bet.Between three water filling layers 150 meters distance is arranged.According to routine, an artificial bottom of a well 10 is arranged in the lower end of sleeve pipe 5.Outer oil pipe 1 is arranged in sleeve pipe 5.
Be connected with an interior external seal water distribution packer 4 and a packer 6 on outer oil pipe 1, the position of interior external seal water distribution packer 4 is between last water filling layer 11 and middle water filling layer 12, and the position of packer 6 is at middle water filling layer 12 and make a bet between the water layer 13.
External seal water distribution packer 4 has external seal between outer oil pipe 1 and the sleeve pipe 5 in described, and interior external seal water distribution packer 4 has the oil jacket communication passage, in the bottom of oil jacket communication passage interior sealing is arranged, in be sealed with centre bore.
Inserting seal section 3 is that the bottom is conical pipe, external diameter can with the interior center seal hole fitted seal of interior external seal water distribution packer 4.Insertion seal section 3 is connected the lower end of internal layer oil pipe 2 and inserts in the interior center seal hole of interior external seal water distribution packer 4.
Be connected with a sliding sleeve 7 in the lower end of outer oil pipe 1, the lower end of sliding sleeve 7 is connected with one section screen casing 8, and the lower end of screen casing 8 is connected with a plug 9.
Claims (1)
1. high angle hole ground water distribution concentric double pipe separate injection tubing string, mainly by outer oil pipe (1), internal layer oil pipe (2), insert seal section (3), interior external seal water distribution packer (4), sleeve pipe (5), packer (6), sliding sleeve (7), screen casing (8), plug (9) and artificial bottom of a well (10) are formed, in sleeve pipe (5) outside last water filling layer (11), middle water filling layer (12) and the water layer of making a bet (13) are arranged, in the lower end of sleeve pipe (5) artificial bottom of a well (10) is arranged, outer oil pipe (1) is arranged in sleeve pipe (5); It is characterized in that: on outer oil pipe (1), be connected with an interior external seal water distribution packer (4) and a packer (6), the position of interior external seal water distribution packer (4) is between last water filling layer (11) and middle water filling layer (12), and the position of packer (6) is between middle water filling layer (12) and the water layer of making a bet (13);
External seal water distribution packer (4) has external seal between outer oil pipe (1) and the sleeve pipe (5) in described, and interior external seal water distribution packer (4) has the oil jacket communication passage, in the bottom of oil jacket communication passage interior sealing is arranged, in be sealed with centre bore; Insertion seal section (3) is connected the lower end of internal layer oil pipe (2) and inserts in the interior center seal hole of interior external seal water distribution packer (4), be connected with sliding sleeve (7) in the lower end of outer oil pipe (1), the lower end of sliding sleeve (7) is connected with screen casing (8), and the lower end of screen casing (8) is connected with plug (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201654753U CN201671607U (en) | 2010-04-16 | 2010-04-16 | Concentric double-tube separate-injection tube column with ground water distribution for high-inclination well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201654753U CN201671607U (en) | 2010-04-16 | 2010-04-16 | Concentric double-tube separate-injection tube column with ground water distribution for high-inclination well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671607U true CN201671607U (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201654753U Expired - Lifetime CN201671607U (en) | 2010-04-16 | 2010-04-16 | Concentric double-tube separate-injection tube column with ground water distribution for high-inclination well |
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| Country | Link |
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| CN (1) | CN201671607U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114048A (en) * | 2015-08-17 | 2015-12-02 | 中国石油大学(华东) | Horizontal well staged fracturing oil production method through injection and production in same well |
| CN106150400A (en) * | 2016-08-30 | 2016-11-23 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of halogen mining well sleeve pipe curing means and method |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of separate injection tubing string and application method for flushing |
| CN110159234A (en) * | 2019-06-20 | 2019-08-23 | 中国石油化工股份有限公司 | Concentric double pipe dispenses CO2Tubing string and its application method |
-
2010
- 2010-04-16 CN CN2010201654753U patent/CN201671607U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114048A (en) * | 2015-08-17 | 2015-12-02 | 中国石油大学(华东) | Horizontal well staged fracturing oil production method through injection and production in same well |
| CN105114048B (en) * | 2015-08-17 | 2017-10-13 | 中国石油大学(华东) | A kind of staged fracturing of horizontal well single-well injection-production oil production method |
| CN106150400A (en) * | 2016-08-30 | 2016-11-23 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of halogen mining well sleeve pipe curing means and method |
| CN106150400B (en) * | 2016-08-30 | 2018-03-13 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of halogen mining well sleeve pipe curing means and method |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of separate injection tubing string and application method for flushing |
| CN109322646B (en) * | 2017-07-31 | 2023-10-31 | 中国石油天然气股份有限公司 | Separate injection pipe column for oil well water injection and use method |
| CN110159234A (en) * | 2019-06-20 | 2019-08-23 | 中国石油化工股份有限公司 | Concentric double pipe dispenses CO2Tubing string and its application method |
| CN110159234B (en) * | 2019-06-20 | 2023-12-29 | 中国石油化工股份有限公司 | Concentric double-tube separate injection of CO 2 Tubular column and use method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |