CN202220591U - Heat injection and oil production device for injection-production separation oil well - Google Patents
Heat injection and oil production device for injection-production separation oil well Download PDFInfo
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- CN202220591U CN202220591U CN2011203581893U CN201120358189U CN202220591U CN 202220591 U CN202220591 U CN 202220591U CN 2011203581893 U CN2011203581893 U CN 2011203581893U CN 201120358189 U CN201120358189 U CN 201120358189U CN 202220591 U CN202220591 U CN 202220591U
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Abstract
The utility model discloses a heat injection and oil production device for an injection-production separation oil well. An insert seal is arranged at the middle part of a part of an injection-production pipe string corresponding to an oil layer; the part of the injection-production pipe string corresponding to the oil layer is divided into a bottom heat injection section and an upper oil production section; a sand control pipe string is provided with a sealing extension pipe at a position corresponding to the insert seal; an upper sand pipe corresponding to the upper oil production section is arranged at the upper part of the sealing extension pipe; a lower sand pipe corresponding to the bottom heat injection section is arranged at the lower part of the sealing extension pipe; the upper oil production section is provided with a cyclic sliding sleeve; the bottom heat injection section is provided with a check valve communicated downwards and a perforated tube; and the perforated tube is positioned below the check valve communicated downwards. The cyclic sliding sleeve can be replaced by a Y connector plus an extraction check valve. The utility model has the beneficial effects that the impact on the oil production layer caused by the injection of a heat medium is avoided, and the sand carrying capacity of produced oil is reduced, so that the impact of the produced oil on a sand control screen is reduced, the probability of the damage of the sand control screen is reduced, the oil production efficiency is improved, and the oil production period is prolonged.
Description
Technical field
The utility model relates to a kind of oil well heat injection extracting device of oil, particularly relates to a kind of oil well heat injection extracting device of oil that can heat injection and oil recovery layering be carried out.
Background technology
Viscous crude occupies very big proportion in World's Oil and Gas Resources, but because the viscous crude viscosity is high, and fluid ability is poor, the exploitation difficulty is big.Because viscous crude has the characteristic that descends with temperature rising viscosity; Thickened oil recovery at present is main with thermal recovery mainly; Particularly the heavy crude heat extraction technological development is rapid in recent years, mainly represents technology to be steam soak, steam flooding, SAGD, hot water flooding, combustion in situ, electromagnetism heating etc.In the oil field, land, the heavy crude heat extraction technology is comparatively perfect, but oil field at sea, owing to receive problems such as the place is little, well-completing process is complicated, running cost height, marine viscous crude is just at the early-stage.But through nearly 2 years heavy crude heat extractions at sea in the field use, find to cause the silt carrying capacity of extraction oil bigger because steam in jection impacts greatlyyer to oil bearing bed; Extraction oil is bigger to the impact of sand control screen, the serious wear of sand control screen, and it is damaged near the sand control screen of inlet usually can to occur; Cause sand control screen to leak sand; Influence oil well production, even cause oil well discarded, for oil field development brings very big economic loss.
The utility model content
The utility model provides a kind of notes that can reduce sand control screen wearing and tearing prolongation production cycle to adopt separation oil well heat injection extracting device of oil for solving the technical problem that exists in the known technology.
First technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of notes are adopted and are separated oil well heat injection extracting device of oil; Comprise injection-production column jacket and sand control pipe; Said injection-production column jacket is provided with the part corresponding with oil reservoir; The middle part of the part that said injection-production column jacket is corresponding with oil reservoir is provided with inserts sealing; Said insertion is sealed between said injection-production column jacket and the said sand control pipe, and the part that said injection-production column jacket is corresponding with oil reservoir is divided into bottom heat injection section and top oil recovery section;
Said sand control pipe is provided with sealing in the said insertion seals at of correspondence and prolongs tube, and the top that tube is prolonged in said sealing is provided with and the corresponding top sandpipe of said top oil recovery section, and the bottom that tube is prolonged in said sealing is provided with and the corresponding bottom sandpipe of said bottom heat injection section;
Said top oil recovery section is provided with the circulation sliding sleeve, and said bottom heat injection section is provided with the ball-and-seat and the ported sub of downward conducting, and said ported sub is positioned at the ball-and-seat below of said downward conducting.
The utility model for second technical scheme that solves the technical problem that exists in the known technology and take is: above-mentioned be used for realizing annotating adopt the device that separates oil well heat injection DP technology; Said circulation sliding sleeve is replaced by Y joint+extraction ball-and-seat; Said Y joint is provided with heat injection passage and the oil recovery passage that communicates; Said oil recovery passage is provided with said extraction ball-and-seat, and said heat injection passage is connected on the said injection-production column jacket.
Carry centralizer on the said injection-production column jacket, said centralizer is positioned at the below of said insertion sealing.
Said ported sub is positioned at the bottom of said bottom heat injection section.
Advantage and the good effect that the utlity model has are: be divided into bottom heat injection section and top oil recovery section through inserting the sealing part that injection-production column jacket is corresponding with oil reservoir, thermal medium is regularly injected individual well oil reservoir bottom, thermal medium to be injected rises the oil bearing bed temperature; After the near wellbore zone Crude viscosity descends, crude oil is passed through the extraction of oil reservoir top, because producing horizon and heat injection layer lay respectively at the upper and lower of oil reservoir; Recover the oil on oil reservoir top; In the heat injection of oil reservoir bottom, avoided having reduced the silt carrying capacity of extraction oil because of injecting the impact of thermal medium to producing horizon; Thereby reduced of the impact of extraction oil to sand control screen; Reduce the probability that sand control screen damages, improved oil recovery efficiency, prolonged production cycle.
Description of drawings
Fig. 1 annotates for the utility model and adopts the structural representation that separates oil well heat injection extracting device of oil first scheme;
Fig. 2 annotates to adopt for the utility model and separates the structural representation that oil well heat injection extracting device of oil replaces the Y joint+extraction ball-and-seat of circulation sliding sleeve.
Among the figure: the flow direction of representing extraction crude oil with the arrow of a straightway; The flow direction of representing nitrogen injection with the arrow of two dash lines; The flow direction of representing to inject thermal medium with the arrow of three dash lines; 1, injection-production column jacket, 2, the top ported sub, 3, the top inserts sealing, 4, sand control pipe; 5, circulation sliding sleeve, 6, the top sandpipe, 7, insert sealing, 8, sealing prolongs tube; 9, centralizer, 10, ball-and-seat, 11, the bottom sandpipe, 12, ported sub; 13, Y joint, 14, the heat injection passage, 15, the oil recovery passage, 16, the extraction ball-and-seat.
The specific embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1; A kind of notes are adopted the device that separates oil well heat injection DP technology; Comprise injection-production column jacket 1, said injection-production column jacket 1 is provided with the part corresponding with oil reservoir, and the middle part of the part that said injection-production column jacket 1 is corresponding with oil reservoir is provided with inserts sealing 7; Said insertion sealing 7 is sealed between said injection-production column jacket 1 and the sand control pipe 4, and said insertion sealing 7 is divided into a bottom heat injection section B and a top oil recovery section A with said injection-production column jacket 1 part corresponding with oil reservoir;
Said sand control pipe 4 seals 7 places in the said insertion of correspondence and is provided with sealing and prolongs tube 8, said sealing prolongs that tube 8 top is provided with and recover the oil in the top corresponding top sandpipe 6 of section A, and said sealing is prolonged a bottom of tins 8 and is provided with the corresponding bottom sandpipe 11 with bottom heat injection section B.
A said top oil recovery section A is provided with circulation sliding sleeve 5, and said bottom heat injection section B is provided with the ball-and-seat 10 and ported sub 12 of downward conducting, and said ported sub 12 is positioned at ball-and-seat 10 belows of said downward conducting; Said ported sub 12 is usually located at the bottom of said bottom heat injection section B.
Sealing carries centralizer 9 on the said injection-production column jacket 1 for ease, and said centralizer 9 is positioned at the below of said insertion sealing 7.
See also Fig. 2; Above-mentioned circulation sliding sleeve 5 can also be replaced by Y joint+extraction ball-and-seat; Said Y joint 13 is provided with the heat injection passage 14 and oil recovery passage 15 that communicates, and said oil recovery passage 15 is provided with crude oil extraction ball-and-seat 16, and said heat injection passage 14 is connected on the injection-production column jacket 1.
The operating principle of the utility model:
See also Fig. 1 and Fig. 2; One) thermal medium is injected injection-production column jacket 1; Nitrogen ascending pipe cover annular space; Ported sub 2 gets into injection-production column jackets and thermal medium and converges descendingly from the top of injection-production column jacket 1 along the descending nitrogen of pipe box annular space, and top ported sub 2 is positioned at the top and inserts and seal 3 top, and said structure and technology are identical with prior art.Flow through the successively ball-and-seat 10 of circulation sliding sleeve 5 (or Y joint 13) and conducting downwards of thermal medium after converging and nitrogen flows out from ported sub 12, flows into the oil reservoir bottoms through the lower screen 11 of corresponding bottom heat injection section.Two) vexed well, under the effect of oil reservoir bottom thermal medium, the near wellbore zone crude oil temperature raises, and viscosity descends.Three) recover the oil, section is used circulation sliding sleeve 5 if recover the oil in top, at first is lowered to circulation sliding sleeve switching tools and opens circulation sliding sleeve 5; As the scheme that adopts Y joint 13+ extraction ball-and-seat 15 to substitute circulation sliding sleeve 5 can be omitted aforesaid operations.The crude oil on oil reservoir top recovers the oil section A by extraction ground via upper screen 6 corresponding with top oil recovery section A and top successively.
Although combine accompanying drawing that the preferred embodiment of the utility model is described above; But the utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the utility model.
Claims (6)
1. notes are adopted and are separated oil well heat injection extracting device of oil; Comprise injection-production column jacket and sand control pipe; Said injection-production column jacket is provided with the part corresponding with oil reservoir, it is characterized in that, the middle part of the part that said injection-production column jacket is corresponding with oil reservoir is provided with inserts sealing; Said insertion is sealed between said injection-production column jacket and the said sand control pipe, and the part that said injection-production column jacket is corresponding with oil reservoir is divided into bottom heat injection section and top oil recovery section;
Said sand control pipe is provided with sealing in the said insertion seals at of correspondence and prolongs tube, and the top that tube is prolonged in said sealing is provided with and the corresponding top sandpipe of said top oil recovery section, and the bottom that tube is prolonged in said sealing is provided with and the corresponding bottom sandpipe of said bottom heat injection section;
Said top oil recovery section is provided with the circulation sliding sleeve, and said bottom heat injection section is provided with the ball-and-seat and the ported sub of downward conducting, and said ported sub is positioned at the ball-and-seat below of said downward conducting.
2. notes according to claim 1 are adopted and are separated oil well heat injection extracting device of oil, it is characterized in that, carry centralizer on the said injection-production column jacket, and said centralizer is positioned at the below of said insertion sealing.
3. notes according to claim 1 are adopted and are separated oil well heat injection extracting device of oil, it is characterized in that said ported sub is positioned at the bottom of said bottom heat injection section.
4. notes according to claim 1 are adopted and are separated oil well heat injection extracting device of oil; It is characterized in that; Said circulation sliding sleeve is replaced by Y joint+extraction ball-and-seat; Said Y joint is provided with heat injection passage and the oil recovery passage that communicates, and said oil recovery passage is provided with said extraction ball-and-seat, and said heat injection passage is connected on the said injection-production column jacket.
5. notes according to claim 4 are adopted and are separated oil well heat injection extracting device of oil, it is characterized in that, carry centralizer on the said injection-production column jacket, and said centralizer is positioned at the below of said insertion sealing.
6. notes according to claim 5 are adopted and are separated oil well heat injection extracting device of oil, it is characterized in that said ported sub is positioned at the bottom of said bottom heat injection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203581893U CN202220591U (en) | 2011-09-22 | 2011-09-22 | Heat injection and oil production device for injection-production separation oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203581893U CN202220591U (en) | 2011-09-22 | 2011-09-22 | Heat injection and oil production device for injection-production separation oil well |
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| Publication Number | Publication Date |
|---|---|
| CN202220591U true CN202220591U (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203581893U Expired - Fee Related CN202220591U (en) | 2011-09-22 | 2011-09-22 | Heat injection and oil production device for injection-production separation oil well |
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| Country | Link |
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| CN (1) | CN202220591U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392624A (en) * | 2011-09-22 | 2012-03-28 | 中国海洋石油总公司 | Injection-and-production-separated oil well heat-injecting oil production process and units |
| CN103573226A (en) * | 2012-07-24 | 2014-02-12 | 思达斯易能源技术(集团)有限公司 | Well completion sand prevention process and sand prevention strings thereof |
| CN103867171A (en) * | 2012-12-10 | 2014-06-18 | 中国海洋石油总公司 | Production pipe string of electric submersible pump for offshore heavy oil thermal recovery |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
| CN113969771A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Low-energy-consumption shutoff type hollow rod hot water circulation pipe column |
-
2011
- 2011-09-22 CN CN2011203581893U patent/CN202220591U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392624A (en) * | 2011-09-22 | 2012-03-28 | 中国海洋石油总公司 | Injection-and-production-separated oil well heat-injecting oil production process and units |
| CN102392624B (en) * | 2011-09-22 | 2014-09-10 | 中国海洋石油总公司 | Injection-and-production-separated oil well heat-injecting oil production process and units |
| CN103573226A (en) * | 2012-07-24 | 2014-02-12 | 思达斯易能源技术(集团)有限公司 | Well completion sand prevention process and sand prevention strings thereof |
| CN103573226B (en) * | 2012-07-24 | 2016-03-02 | 思达斯易能源技术(集团)有限公司 | A kind of completion and sand control technique and sand control pipe thereof |
| CN103867171A (en) * | 2012-12-10 | 2014-06-18 | 中国海洋石油总公司 | Production pipe string of electric submersible pump for offshore heavy oil thermal recovery |
| CN103867171B (en) * | 2012-12-10 | 2016-06-08 | 中国海洋石油总公司 | A kind of Offshore Heavy Oil Field thermal recovery electric submersible pump producing tubular column and application thereof |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
| CN113969771A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Low-energy-consumption shutoff type hollow rod hot water circulation pipe column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20180922 |