CN201334898Y - Pipe string capable of zonal waterflooding by utilizing hollow sucker rod - Google Patents
Pipe string capable of zonal waterflooding by utilizing hollow sucker rod Download PDFInfo
- Publication number
- CN201334898Y CN201334898Y CNU2008201247463U CN200820124746U CN201334898Y CN 201334898 Y CN201334898 Y CN 201334898Y CN U2008201247463 U CNU2008201247463 U CN U2008201247463U CN 200820124746 U CN200820124746 U CN 200820124746U CN 201334898 Y CN201334898 Y CN 201334898Y
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- oil pipe
- waterflooding
- oil
- packer
- zonal
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Abstract
The utility model discloses a pipe string capable of zonal waterflooding by utilizing a hollow sucker rod, which is applied in the technical field of zonal waterflooding of oil wells. The pipe string is characterized in that a hydraulic circulating valve is connected at the bottom end of an oil pipe; a bridge channel is connected at the upper end of the hydraulic circulating valve through the oil pipe; the upper part of the bridge channel is connected with the oil pipe; two packers and a hydraulic sliding sleeve arranged between the two packers are connected on the oil pipe at the upper part of the bridge channel; and a hollow sucker rod is arranged in the oil pipe and is connected with the bridge channel through a hollow rod sealing insert link. The pipe string has the advantages that zonal waterflooding can be realized by utilizing the hollow sucker rod, thus satisfying the requirements of zonal waterflooding and separating the channels; the stratum of the oil well can maintain the energy; the waterflooding control mode is significantly changed; the water amount is simple, convenient, quick, safe and efficient to control on the ground; and the pipe string is particularly applicable in oil wells with large pitch and the wells with big pressure difference between the layers.
Description
Technical field
The utility model relates to the oil field petroleum production engineering, and particularly oil well delamination water injection technology field is a kind of tubing string that utilizes hollow rod to carry out seperated layer water injection.
Background technology
It is an important well stimulation in the petroleum production engineering of oil field that oil well is carried out seperated layer water injection.Domestic have the conventional stratified injection water technology of a lot of Oilfield using that oil well is carried out seperated layer water injection, replenishes stratum energy, to reach the effect of oil field stable high yield.At present, main employing is that eccentric water distribution pipe column carries out seperated layer water injection.Eccentric water distribution pipe column mainly adopts the main structure of " Y341 packer+eccentric injection mandrel ", can carry out two-layer or three layers of dispensing.Present separate zone waterflooding technology exists following problem and needs solution badly:
1, during normal water filling, carry on again after adopting steel wire to deliver to the pulling and running tool string below the side-pocket mandrel, deflecting mechanism in the side-pocket mandrel and guiding mechanism cooperate with deflecting mechanism and guiding mechanism on the pulling and running tool string, make the deflecting arm just in time over against the eccentric valve bag of side-pocket mandrel, by the pulling and running tool string repeatedly jarring realize the input of blanking plug or pull out.The general dropping-fishing test cycle is 3 months, and each pulling needs 4 operative employee's operation 5～6h at least.The dropping-fishing test workload is big, expense is high.
2, during stratified injection water technology tubing string operate as normal,, then stop to annotate the back along with the prolongation strata pressure that stops the time of annotating can reduce, temperature can raise if packer sealing is reliable; If packer sealing is unreliable, then stop to annotate the back along with the prolongation strata pressure that stops the time of annotating, temperature can not change.Principle can judge whether packer is working properly in the stratified injection water technology tubing string thus.Can't get rid of the mistake envelope that other reason causes, lack the envelope means of testing reliably.
The utility model content
The purpose of this utility model is: a kind of tubing string that utilizes hollow rod to carry out seperated layer water injection is provided, the hollow rod design feature is combined with conventional separate layer water injection string architectural feature, utilize hollow rod to carry out seperated layer water injection, satisfy the oil well delamination waterflooding requirement fully, make the stratum keep energy, to reach the effect of oil field stable high yield.The dropping-fishing test workload that overcomes conventional seperated layer water injection existence is big, expense is high; Lack the deficiency of testing the envelope means reliably.
The technical solution adopted in the utility model is: utilize hollow rod to carry out the tubing string of seperated layer water injection, mainly form by oil pipe, hollow rod, hydraulic pressure sliding sleeve, packer, passageway bridge and waterpower circulation valve, it is characterized in that: oil pipe be connected with waterpower circulation valve bottom, be connected with passageway bridge in the upper end of waterpower circulation valve by oil pipe.The top of passageway bridge is connected with oil pipe.On the oil pipe on passageway bridge top, be connected with two packers and a hydraulic pressure sliding sleeve.Hydraulic pressure slides in the middle of two packers.The position of packer is respectively between two injections.Be that relative position between bottom implanted layer and the middle part implanted layer has a packer; Relative position between middle part implanted layer and the top implanted layer has a packer.Hollow rod is arranged in oil pipe.Hollow rod is connected with passageway bridge by hollow stem sealing inserted link.
What described packer adopted is Y341 type packer.
What described waterpower circulation valve adopted is KSL-94 type waterpower circulation valve.
The work flow that is lowered to the tubing string of seperated layer water injection in sleeve pipe 1 is: 1) lower casing string, 2) following hollow-rod string, 3) suppress packer setting, 4) continue to suppress the hydraulic pressure sliding sleeve is opened.So just formed three passages: i.e. hollow rod inner chamber, beam hanger annular space and oil jacket annular space, carry out water filling to three passages respectively, just realized the function of seperated layer water injection.
Utilize packer that the oil jacket annular space is carried out layering, utilize the hydraulic pressure sliding sleeve that the beam hanger annular space is communicated with oil jacket annular space layer then, utilize passageway bridge that the hollow stem inner chamber is communicated with oil jacket annular space layer.Also there is an independently center-aisle simultaneously; Also there is an independently annulus access simultaneously;
The beneficial effects of the utility model: the tubing string that the utility model utilizes hollow rod to carry out seperated layer water injection, utilize hollow rod can carry out seperated layer water injection, satisfy the requirement of seperated layer water injection autonomous channel; Make oil-well strata keep energy, to reach the effect of oil field stable high yield.Embody the characteristics of following four aspects:
1, the great change of control mode.The down-hole does not have water nozzle, and pulling water distribution testing expense is not only saved in no wire rope pulling operation, and avoids the pulling accident;
2, the Ground Control water yield is simple and efficient, and is safe and efficient.All test water distribution processes all can be carried out on ground;
3, keep a grip on that to test envelope convenient, water injection rate is accurate.Envelope is directly tested on realization ground, and the water yield directly reads, and is accurately convenient.Easily realize remote centralized control.；
4, the autonomous channel avoids interference, and is adapted to special complex hole condition.Be particularly useful for the big pressure reduction well of high angle hole and interlayer.
Description of drawings
Fig. 1 is that the utility model utilizes hollow rod to carry out the tubular column structure generalized section of seperated layer water injection.
Among the figure, 1. sleeve pipe, 2. oil pipe, 3. hollow rod, 4. hydraulic pressure sliding sleeve, 5. packer, 6. hollow stem sealing inserted link, 7. passageway bridge, 8. waterpower circulation valve, 9. implanted layer.
The specific embodiment
Consult Fig. 1.The tubing string that utilizes hollow rod to carry out seperated layer water injection mainly is made up of oil pipe 2, hollow rod 3, hydraulic pressure sliding sleeve 4, packer 5, passageway bridge 7 and waterpower circulation valve 8.Oil pipe 2 be connected with a waterpower circulation valve 8 bottom, what waterpower circulation valve 8 adopted is KSL-94 type waterpower circulation valve.Upper end at waterpower circulation valve 8 is connected with a passageway bridge 7 by oil pipe 2.The top of passageway bridge 7 is connected with oil pipe 2.On the oil pipe 2 on passageway bridge 7 tops, be connected with two packers 5 and a hydraulic pressure sliding sleeve 4.Hydraulic pressure sliding sleeve 4 is in the middle of two packers 5.What described packer 5 adopted is Y341 type packer.Distance between two packers 5 and the hydraulic pressure sliding sleeve 4 is to determine according to the distance between the implanted layer 9.Packer 5 positions are respectively in the middle of two implanted layers 9.The relative position that is bottom implanted layer 9 and middle part implanted layer 9 centres has a packer 5; Relative position in the middle of middle part implanted layer 9 and the top implanted layer 9 has a packer 5.Hollow rod 3 is arranged in oil pipe 2.Hollow rod 3 is connected with passageway bridge 7 by hollow stem sealing inserted link 6.
Top implanted layer 9 is an optional layer, can annotate and can not annotate, and the waterflood path of top implanted layer 9 is upper packer oil jacket annular spaces more than 5.
When the middle part was the water filling layer, the passage of middle part implanted layer 9 was the flow liquid passages that enter the hydraulic pressure sliding sleeve from the oil jacket annular space, enters the oil jacket annular space of two packers then.
When the bottom was the water filling layer, the passage of bottom implanted layer 9 was that the inner chamber from hollow stem enters passageway bridge, enters the following oil jacket annular space of lower packer then.Thereby reaching a water injection string like this can finish two-layer or three layers of water filling task.
Claims (3)
1, a kind of tubing string that utilizes hollow rod to carry out seperated layer water injection, mainly by oil pipe (2), hollow rod (3), hydraulic pressure sliding sleeve (4), packer (5), passageway bridge (7) and waterpower circulation valve (8) are formed, it is characterized in that: be connected with waterpower circulation valve (8) bottom at oil pipe (2), upper end at waterpower circulation valve (8) is connected with passageway bridge (7) by oil pipe (2), the top of passageway bridge (7) is connected with oil pipe (2), on the oil pipe (2) on passageway bridge (7) top, be connected with two packers (5) and a hydraulic pressure sliding sleeve (4), hydraulic pressure sliding sleeve (4) is in the middle of two packers (5), and the relative position between bottom implanted layer (9) and the middle part implanted layer (9) has a packer (5); Relative position between middle part implanted layer (9) and the top implanted layer (9) has a packer (5), and hollow rod (3) is arranged in oil pipe (2), and hollow rod (3) is connected with passageway bridge (7) by hollow stem sealing inserted link (6).
2, the tubing string that utilizes hollow rod to carry out seperated layer water injection according to claim 1 is characterized in that: what described packer (5) adopted is Y341 type packer.
3, the tubing string that utilizes hollow rod to carry out seperated layer water injection according to claim 1 is characterized in that: what described waterpower circulation valve (8) adopted is KSL-94 type waterpower circulation valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201247463U CN201334898Y (en) | 2008-12-17 | 2008-12-17 | Pipe string capable of zonal waterflooding by utilizing hollow sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201247463U CN201334898Y (en) | 2008-12-17 | 2008-12-17 | Pipe string capable of zonal waterflooding by utilizing hollow sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201334898Y true CN201334898Y (en) | 2009-10-28 |
Family
ID=41286548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201247463U Expired - Fee Related CN201334898Y (en) | 2008-12-17 | 2008-12-17 | Pipe string capable of zonal waterflooding by utilizing hollow sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201334898Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322648A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of flushing separate injection tubing string and application method |
| CN114837637A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Self-extracting and self-injecting device in same well |
-
2008
- 2008-12-17 CN CNU2008201247463U patent/CN201334898Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322648A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of flushing separate injection tubing string and application method |
| CN109322648B (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 |
| CN114837637A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Self-extracting and self-injecting device in same well |
| CN114837637B (en) * | 2021-02-01 | 2024-04-30 | 中国石油天然气股份有限公司 | Self-production and self-injection device for same well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20100118 |