CN202628059U - Concentric double-pipe polymer injection pipe column - Google Patents
Concentric double-pipe polymer injection pipe column Download PDFInfo
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- CN202628059U CN202628059U CN 201220269693 CN201220269693U CN202628059U CN 202628059 U CN202628059 U CN 202628059U CN 201220269693 CN201220269693 CN 201220269693 CN 201220269693 U CN201220269693 U CN 201220269693U CN 202628059 U CN202628059 U CN 202628059U
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- pipe
- oil pipe
- gather
- outer oil
- polymer injection
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Abstract
The utility model relates to a concentric double-pipe polymer injection pipe column. The concentric double-pipe polymer injection pipe column comprises a polymer injection oil pipe for conveying injected polymer; the polymer injection oil pipe comprises an outer oil pipe for being set into a corresponding sleeve pipe for pumping oil during use, an inner oil pipe which is arranged in the outer oil pipe, and an upper polymer injection packer and a lower polymer injection packer which are connected with the outer oil pipe and used for packing the corresponding sleeve pipe and the corresponding outer oil pipe; a pipe insertion sealer which comprises a sealer inner pipe and is used for packing the inner oil pipe and the outer oil pipe is arranged between the upper polymer injection packer and the lower polymer injection packer; the upper and lower ends of the sealer inner pipe are communicated with the inner oil pipe and the outer oil pipe respectively; the outer oil pipe between the pipe insertion sealer and the upper polymer injection packer is connected with an upper polymer injection communicating vessel; a part of the outer oil pipe, which is below the lower polymer injection packer, is connected with a lower polymer injection communicating vessel; and a ball valve is arranged on a part of the outer oil pipe, which is below the lower polymer injection communicating vessel. The utility model provides the concentric double-pipe polymer injection pipe column which is high in viscosity keeping rate and can perform three-zone injection.
Description
Technical field
The utility model relates to the oil exploitation down-hole string, relate in particular to a kind of can three layers the concentric double pipe annotated of branch annotate and gather tubing string.
Background technology
The polymer flooding tertiary oil recovery technology is the important means of oilfield stable production, and present notes gather tubing string, mainly adopts concentric single pipe layered tubing string, and the down-hole part of this tubing string comprises the injection allocation device of packer and annular relief groove, and wherein, the injection allocation device comprises injection allocation cover and injection allocation core.The injection allocation core is by wire Launching and Bailing, the amount of regulating injection allocation through the length of regulating the injection allocation core.But there is following problem in this tubing string: 1. when sewage mixed water injection mode, and reason such as poor owing to sewage quality, that polymer dissolution is insufficient, often blocking channel.2. adopt the wire Launching and Bailing test, the card phenomenon often occurs being hampered, meeting, the technology success rate is low.3. direct tested viscosity conservation rate, the viscosity retention data of single tube injection allocation device commonly used at present, the data of a laboratory test just, the scene cannot be checked.Though can realize well sampling, can only get the data of injection allocation device front end, the viscosity data behind the injection allocation device has no idea to get at present.
Summary of the invention
The purpose of the utility model be to provide a kind of viscosity conservation rate high and can three layers the concentric double pipe annotated of branch annotate and gather tubing string.
In order to address the above problem, the technical scheme of the utility model is:
A kind of concentric double pipe is annotated and is gathered tubing string; Comprise and carry the notes of annotating polymers to gather oil pipe; Described notes gather oil pipe and comprise and be used for being lowered to corresponding oil pumping in use with the outer oil pipe of sleeve pipe and be arranged at the inner oil tube in the said outer oil pipe; Described concentric double pipe annotate gather tubing string also comprise with said outer oil pipe is connected and is used for gap between packing respective sleeve and the outer oil pipe on notes gather packer and make a bet and gather packer; Said upper and lower notes gather and are provided with the intubate sealer that has pipe in the sealer and be used for gap between said inner oil tube of packing and the said outer oil pipe between the packer; The upper and lower side of pipe is communicated with described inner oil tube and outer oil pipe respectively in the said sealer; Said intubate sealer and said go up to annotate to gather to be connected with on the outer oil pipe between the packer to annotate gather linker, be connected with to make a bet on the said outer oil pipe that gathers the packer below of making a bet and gather linker, the said outer oil pipe that gathers below the linker of making a bet is provided with ball valve.
The lower end of pipe is free end in the said sealer.
The beneficial effect of the utility model is: gather under the effect of packer at last notes, corresponding notes polymers can flow to the 3rd oil reservoir through the gap between outer oil pipe and the respective sleeve; The intubate sealer, on annotate and to gather linker and upper and lower notes gather under the effect of packer, corresponding notes polymers can through inner oil tube and outside gap and last notes between the oil pipe gather linker and flow to second oil reservoir; Gather linker and gather under the effect of packer with making a bet making a bet; Corresponding notes polymers can and be made a bet through the internal channel of the internal channel of inner oil tube, outer oil pipe and gathered linker and flow to first oil reservoir, and then can realize that three layers of branch annotate, and adopts three layers of branches notes; The down-hole viscosity loss is little, and the viscosity conservation rate is higher.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the ground flow structural representation of the utility model.
The specific embodiment
A kind of concentric double pipe notes gather the embodiment of tubing string shown in Fig. 1 ~ 2: comprise and carry the notes of annotating polymers to gather oil pipe; Notes gather oil pipe and are included in and are lowered to corresponding oil pumping when using with the outer oil pipe in the sleeve pipe 12 1 be arranged at the inner oil tube 2 in the outer oil pipe 1; Concentric double pipe is annotated and to be gathered tubing string and comprise also that the going up on outer oil pipe 1 that be linked in sequence along the vertical direction annotated and gather packer 3, go up to annotate and gather linker 4, intubate sealer, make a bet and gather packer 7, make a bet and gather linker 8 and ball valve 9; Upward, notes gather packer and are used for the gap between outer oil pipe 1 of packing and the sleeve pipe 12; Last annotate gathered gap and the upper and lower notes that linker 4 is used to be communicated with between the inside and outside oil pipe and gathers the annular space between the packer, makes a bet to gather linker 8 and be used to be communicated with the internal channel of outer oil pipe 1 and sleeve pipe 12 internal channels of making a bet and gathering packer 8 belows.The intubate sealer is used for the gap between packing inner oil tube 2 and the outer oil pipe 1; The intubate sealer has the sealer outer tube 5 that is connected with outer oil pipe 1 and by managing 6 in the sealer that passes in the sealer outer tube 5; The upper end of pipe 6 is communicated with the lower end of inner oil tube 2 in the sealer, and the lower end of pipe 6 is free end in the sealer.Last notes gather packer 3, on annotate and to gather linker 4, intubate sealer, make a bet and gather packer 7, make a bet and gather under the effect of linker 8 and ball valve 9, in the inner oil tube 2, between inner oil tube 2 and the outer oil pipe 1 and between outer oil pipe 1 and the respective sleeve 12 respectively formation lead to the first notes polymers runner 11-1, the second notes polymers runner 11-2 and the 3rd notes polymers runner 11-3 of the corresponding first oil reservoir 10-1, the second oil reservoir 10-2 and the 3rd oil reservoir 10-3.Upper and lower notes gather linker and all belong to existing just technology, and last notes gather linker 4 and are used for the conducting second notes polymers runner 11-2 and the second oil reservoir 10-2; Make a bet and gather linker 8 and be used for conducting first and annotate the polymers runner 11-1 and the first oil reservoir 10-1.Upper and lower notes gather linker to be sheared polymer solution is low, and when stopping annotating state, restrictor ring is closed under spring action voluntarily, keeps peace and quiet in the oil pipe.
It is as shown in Figure 2 that concentric double pipe in the foregoing description is annotated the assembly sketch map that gathers tubing string and injection allocation of ground device: utilize high shear injection allocation device 15, low shearing injection allocation device 16 to come the matching relationship of regulate polymer molecular weight and oil reservoir; The low injection allocation device 16 of shearing of high permeability formation utilization is annotated heavy polymer; Low-permeability layer adopts high shear injection allocation device 15 to annotate low-molecular weight polymer, guarantees to inject continuously.Polymer injection allocation device is placed on ground, allocates on ground.Each injection allocation device is connected electromagnetic flowmeter 17 and sample tap 13, monitor the injection rate and the viscosity conservation rate size of each layer in real time, the data true and accurate.14 expression pressure meters among the figure.
Concentric double pipe notes in employing the utility model gather tubing string and have following advantage:
1. adopt three runner layerings, the down-hole viscosity loss is little, and the viscosity conservation rate is higher;
2. import and export sampling at instrument, directly measure the viscosity conservation rate;
3. test allotment is on ground, but the layering continuous metering directly reads flow, pressure data, the data of surveying true and reliable;
4. the injection allocation device is adopted in the ground shunting, and each layer has independently injection channel, and zonal flow rate can be adopted the current intelligence free adjustment according to notes, and data is reliable.
Claims (2)
1. a concentric double pipe is annotated and is gathered tubing string; Comprise and carry the notes of annotating polymers to gather oil pipe; It is characterized in that: described notes gather oil pipe and comprise and be used for being lowered to corresponding oil pumping in use with the outer oil pipe of sleeve pipe and be arranged at the inner oil tube in the said outer oil pipe; Described concentric double pipe annotate gather tubing string also comprise with said outer oil pipe is connected and is used for gap between packing respective sleeve and the outer oil pipe on notes gather packer and make a bet and gather packer; Said upper and lower notes gather and are provided with the intubate sealer that has pipe in the sealer and be used for gap between said inner oil tube of packing and the said outer oil pipe between the packer; The upper and lower side of pipe is communicated with described inner oil tube and outer oil pipe respectively in the said sealer; Said intubate sealer and said go up to annotate to gather to be connected with on the outer oil pipe between the packer to annotate gather linker, be connected with to make a bet on the said outer oil pipe that gathers the packer below of making a bet and gather linker, the said outer oil pipe that gathers below the linker of making a bet is provided with ball valve.
2. concentric double pipe according to claim 1 is annotated and gathered tubing string, it is characterized in that: the lower end of pipe is free end in the said sealer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220269693 CN202628059U (en) | 2012-06-08 | 2012-06-08 | Concentric double-pipe polymer injection pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220269693 CN202628059U (en) | 2012-06-08 | 2012-06-08 | Concentric double-pipe polymer injection pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202628059U true CN202628059U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220269693 Expired - Lifetime CN202628059U (en) | 2012-06-08 | 2012-06-08 | Concentric double-pipe polymer injection pipe column |
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| CN (1) | CN202628059U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234671A (en) * | 2014-09-23 | 2014-12-24 | 中国石油天然气股份有限公司 | Water-gathering same-well layering same-injection process pipe column |
| CN104389567A (en) * | 2014-11-21 | 2015-03-04 | 中国石油天然气股份有限公司 | Separate injection pipe column and separate injection method |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN106285588A (en) * | 2015-06-11 | 2017-01-04 | 中国石油天然气股份有限公司 | Preset cable direct control type electric control layered polymer injection process pipe column and polymer injection method |
| CN109267978A (en) * | 2018-09-07 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of separate injection tubing string |
| CN110630222A (en) * | 2018-06-21 | 2019-12-31 | 中国石油天然气股份有限公司 | Production string |
-
2012
- 2012-06-08 CN CN 201220269693 patent/CN202628059U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234671A (en) * | 2014-09-23 | 2014-12-24 | 中国石油天然气股份有限公司 | Water-gathering same-well layering same-injection process pipe column |
| CN104389567A (en) * | 2014-11-21 | 2015-03-04 | 中国石油天然气股份有限公司 | Separate injection pipe column and separate injection method |
| CN106285588A (en) * | 2015-06-11 | 2017-01-04 | 中国石油天然气股份有限公司 | Preset cable direct control type electric control layered polymer injection process pipe column and polymer injection method |
| CN105201473A (en) * | 2015-10-22 | 2015-12-30 | 东北石油大学 | Multiple-oil-layer deep profile control injection device and oil layer deep profile control realizing method thereof |
| CN110630222A (en) * | 2018-06-21 | 2019-12-31 | 中国石油天然气股份有限公司 | Production string |
| CN109267978A (en) * | 2018-09-07 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of separate injection tubing string |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
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| CX01 | Expiry of patent term |