CN104989326A - Regulating separate layer production string and separate layer oil production method - Google Patents
Regulating separate layer production string and separate layer oil production method Download PDFInfo
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- CN104989326A CN104989326A CN201510355421.0A CN201510355421A CN104989326A CN 104989326 A CN104989326 A CN 104989326A CN 201510355421 A CN201510355421 A CN 201510355421A CN 104989326 A CN104989326 A CN 104989326A
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Abstract
The invention relates to the technical field of oil field separate layer oil production engineering, in particular to a regulating separate layer production string and a separate layer oil production method. An oil pipe string of the regulating separate layer production string is vertically arranged in an oil well; the bottom end of an oil pipe string is sealed; a rod type oil sucking pump and a plurality of groups of sealing and distributing systems which are sequentially communicated are arranged on the oil pipe string; each group of sealing and distributing system comprises a packing device and an adjustable and controllable production regulator which are sequentially communicated; each packing device is arranged above an oil layer and is used for isolating and protecting the corresponding production regulator; and each production regulator is arranged at the middle upper part of the oil layer. The separate layer oil production method works on the basis of the regulating separate layer production string. The regulating separate layer production string and the separate layer oil production method have the advantages that through regulating and controlling the production regulators, the interlayer interference can be avoided; and the separate layer flowing pressure is controlled, so that the potentials of each layer are exerted to the maximum degree; the application of the production regulators is diversified; the separate layer oil production, water finding, water plugging and the like are subjected to integral construction; and three technical measures can be realized only through one pipe string.
Description
Technical field
The present invention relates to oil field layered technical field of oil production engineering, particularly relate to a kind of regulating separate stratum production string and oil production by layer method.
Background technology
Oil extraction in oil field utilizes separate zone production technology, develops, improve oil well output and development effectiveness to many cover oil-bearing series.In oil well, when there being the conjunction of many cover series of strata to adopt, due to differences such as the pressure between oil reservoir, reservoir physics character, oil properties, often interfering with each other, making part oil reservoir can not play due effect.For reducing or eliminating interlayer interference, answering separate zone production, comprising oil production by layer, seperated layer water injection and supporting technology thereof.Therefore, because deeply buried reservoir degree is different, strata pressure is different, permeability exists larger difference, need to implement oil production by layer.
At present, oil reservoir divides the technology of adopting mainly to adopt packer multiple zone to be divided into two large oil reservoirs, the Liquid output of two oil reservoirs is extracted out without interfering with each other by layered oil pump, and this layered oil pump is combined by up big and down small two oil well pumps, a bar two pump mode layering extraction.Or adopt single pump to polyblend mode, the producing pressure differential of oil reservoir is regulated to complete oil production by layer with fixed pressure production mandrel, its fixed pressure production mandrel pressure is provided with before instrument is gone into the well, and this technology can not be satisfied with multi-section multi-layer oil production by layer, can not record the production profile of oil reservoir.
In sum, current oil reservoir divides the technology of adopting there is no can the multi-section multi-layer layering pumping unit of intelligent control laminar flow pressure, does not also have by integrated constructions such as oil production by layer, water detection, water blockoffs, only to need one-trip string can realize the technology of three kinds of functions.。
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention there is provided a kind of regulating separate stratum production string and oil production by layer method, each oil reservoir can be made to be in relatively independent pressure system, avoid interlayer interference, and can control the flowing pressure of layering, each layer potentiality are played to greatest extent, and by integrated constructions such as oil production by layer, water detection, water blockoffs, only need one-trip string just can realize three kinds of technical measures.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of regulating separate stratum production string, comprise the tubing string of the bottom end closure stood in oil well, described oil well is through with multiple oil reservoir, it is characterized in that, also comprise: described tubing string is provided with the rod-type pumping unit and many group envelope match systems that are communicated with in turn; Often organize described envelope match system include the packing device that is communicated with in turn and regulatablely join product device, described packing device is arranged at the top of described oil reservoir, and joins product device for described in isolated protection, described in join and produce the middle and upper part that device is arranged at described oil reservoir.
Wherein, also comprise adjusting apparatus, described adjusting apparatus joins the oil nozzle keying situation of producing device described in controlling to adjust.
Wherein, the producing fluid level testing valve of the production status for monitoring described rod-type pumping unit is also communicated with between described rod-type pumping unit and envelope match system by described tubing string.
Wherein, also the expansion bend for tubing string movement described in flexible compensation is communicated with by described tubing string between described producing fluid level testing valve and envelope match system.
Wherein, also the sand-proof pipe for sand control filtering is communicated with by described tubing string between described rod-type pumping unit and producing fluid level testing valve.
Wherein, described oil well is through with two oil reservoirs, two described oil reservoirs comprise the first oil reservoir district and the second oil reservoir district, the quantity of described envelope match system is two, join product device described in two and comprise the first production mandrel and the second production mandrel, two described packing devices comprise the first packer and the second packer, and described rod-type pumping unit, sand-proof pipe, producing fluid level testing valve, expansion bend, the first packer, the first production mandrel, the second packer are communicated with by described tubing string in turn with the second production mandrel; Described first packer and the second packer are arranged at the top in described first oil reservoir district and the second oil reservoir district respectively, and described first production mandrel and the second production mandrel are arranged at the middle and upper part in described first oil reservoir district and the second oil reservoir district respectively.
Wherein, described rod-type pumping unit comprises sucker rod, the pump housing and pump seat, and described sucker rod stands on the top of the described pump housing, and the described pump housing is plugged in described pump seat.
Wherein, the bottom of described tubing string is closed by high pressure plug.
A kind of oil production by layer method, carries out work based on regulating separate stratum production string as above.
(3) beneficial effect
Technique scheme of the present invention has following beneficial effect: the tubing string of regulating separate stratum production string of the present invention stands in oil well, and the bottom end closure of tubing string, tubing string is provided with the rod-type pumping unit that is communicated with in turn and many group envelope match systems, and often group envelope match system includes the packing device that is communicated with in turn and regulatablely joins product device; Packing device is arranged at the top of oil reservoir, and joins product device for isolated protection, joins and produces the middle and upper part that device is arranged at oil reservoir; Oil production by layer method of the present invention carries out work based on this regulating separate stratum production string.Regulating separate stratum production string of the present invention and oil production by layer method join product device by regulation and control, each oil reservoir can be made to be in relatively independent pressure system, avoid interlayer interference, and can control the flowing pressure of layering, each layer potentiality are played to greatest extent, and join product device and can be used for the work such as oil recovery, water detection, water blockoff, by integrated constructions such as oil production by layer, water detection, water blockoffs, only need one-trip string just can realize three kinds of technical measures.
Accompanying drawing explanation
Fig. 1 is the structural representation of the regulating separate stratum production string of the embodiment of the present invention.
Wherein, 1, tubing string; 2, sucker rod; 3, rod-type pumping unit; 4, sand-proof pipe; 5, producing fluid level testing valve; 6, expansion bend; 7, the first packer; 8, the first production mandrel; 9, the first oil reservoir district; 10, the second packer; 11, the second production mandrel; 12, the second oil reservoir district; 13, high pressure plug; 14, oil well.
Detailed description of the invention
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, except as otherwise noted, the implication of " multiple " is two or more; Except as otherwise noted, the implication of " nick shaped " is the shape except cross section is concordant.Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 1, the tubing string 1 of the regulating separate stratum production string that the present embodiment provides stands in oil well 14, and oil well 14 is through with multiple oil reservoir, is provided with the sleeve pipe of the laminating borehole wall in oil well 14, and the bottom end closure of tubing string 1, tubing string 1 is provided with the rod-type pumping unit 3 and many group envelope match systems that are communicated with in turn, often group envelope match system includes the packing device that is communicated with in turn and regulatablely joins product device, annular space packing between tubing string 1 and the sleeve pipe of oil well 14 is opened by packing device, product device is joined by regulation and control, each oil reservoir can be made to be in relatively independent pressure system, avoid interlayer interference, and can control the flowing pressure of layering, each layer potentiality are played to greatest extent, and join product device to can be used for recovering the oil, water detection, the work such as water blockoff, by oil production by layer, water detection, the integrated constructions such as water blockoff, only need one-trip string just can realize three kinds of technical measures, packing device is arranged at the top of oil reservoir, and joins product device for isolated protection, joins and produces the middle and upper part that device is arranged at oil reservoir, join product device by switch, the liquid in oil reservoir can be made to enter accurately and join in product device.
The product device of joining of envelope match system is provided with the oil nozzle of joining product device for making liquid in oil reservoir enter, and joins the oil nozzle producing device open and close situation by adjusting apparatus control and regulation.
For the ease of extract rod-type pumping unit 3 and under enter adjusting apparatus, rod-type pumping unit 3 comprises sucker rod 2, the pump housing and pump seat, and the pump housing of rod-type pumping unit 3 is dismountable to be plugged in pump seat, and the bottom of pump seat is communicated with by tubing string 1 with the top sealing match system.
Also be communicated with the producing fluid level testing valve 5 of the production status for monitoring rod-type pumping unit 3 by tubing string 1 between rod-type pumping unit 3 and envelope match system, the fluid overflowed in tubing string 1, returned in the annular space of oil well 14 sleeve pipe by producing fluid level testing valve 5, monitor rod-type pumping unit 3 operating mode in process of production by the height change measuring producing fluid level.
Also the expansion bend 6 for flexible compensation tubing string 1 movement is communicated with by tubing string 1 between producing fluid level testing valve 5 and envelope match system, expansion bend 6 is communicated with by tubing string 1 with confinement system, when there is transverse direction or length travel in tubing string 1 in the regulating separate stratum production string course of work, expansion bend 6 can the spacing and displacement of flexible compensation tubing string 1, ensure the stable of tubing string 1, guarantee that packing device can excellent sealing.
Also the sand-proof pipe 4 for sand control filtering is communicated with by tubing string 1 between rod-type pumping unit 3 and producing fluid level testing valve 5, oil reservoir liquid transport and enter in well process, sandstone can be avoided well to enter the operating efficiency affecting rod-type pumping unit 3 in rod-type pumping unit 3.
The bottom of tubing string 1 adopts high pressure plug 13 to close, and high pressure plug 13 is connected by the bottom of tubing string 1 with envelope match system, can well prevent the leakage of pipeline, play the effect of sealing.
Specific in the present embodiment, for two oil reservoirs, when oil well 14 is through with two oil reservoirs, two oil reservoirs comprise the first oil reservoir district 9 and the second oil reservoir district 12, the quantity of envelope match system is two, join product device for two and comprise the first production mandrel 8 and the second production mandrel 11, two packing devices comprise the first packer 7 and the second packer 10, and rod-type pumping unit 3, sand-proof pipe 4, producing fluid level testing valve 5, expansion bend 6, first packer 7, first production mandrel 8, second packer 10 are communicated with by tubing string 1 in turn with the second production mandrel 11; First packer 7 and the second packer 10 are arranged at the top in the first oil reservoir district 9 and the second oil reservoir district 12 respectively, first production mandrel 8 and the second production mandrel 11 are arranged at the middle and upper part in the first oil reservoir district 9 and the second oil reservoir district 12 respectively, the keying situation of the oil nozzle of the first production mandrel 8 and the second production mandrel 11 is all adjustable, and then makes the flowing pressure of two oil reservoirs be in controllable state.Therefore, the control of the flowing pressure of layering can be realized by a rod-type pumping unit 3.
It should be noted that, because the oil reservoir that oil well 14 is through may be one or more, this regulating separate stratum production string can according to the envelope match system of the quantity assembling respective amount of oil reservoir, product device is joined by regulating, each oil reservoir can be made to be in relatively independent pressure system, avoid interlayer interference, and can control the flowing pressure of layering, each layer potentiality are played to greatest extent.Therefore, when oil well 14 is through with an oil reservoir, the quantity of envelope match system also can be one; When oil well 14 is through with multiple oil reservoir, the quantity of envelope match system equals the quantity of oil reservoir.
The present embodiment also proposed a kind of oil production by layer method, carries out work based on above-mentioned regulating separate stratum production string, comprises following several step:
S1, determine to seal the quantity of match system according to the quantity of oil reservoir 14;
S2, the pump seat of rod-type pumping unit 3, sand-proof pipe 4, producing fluid level testing valve 5, expansion bend 6 and envelope match system to be communicated with in turn by tubing string 1, and to close the bottom of tubing string 1 by high pressure plug 13, the pump housing of rod-type pumping unit 3 can be seated in;
S3, the precalculated position of oil well 14 will be entered under the regulating separate stratum production string assembled;
S4, in tubing string 1, add hydraulic pressure from the well head of oil well 14 packing device of envelope match system is set, then open producing fluid level testing valve 5;
S5, in tubing string 1 enter adjusting apparatus and regulate and control to joining the position of producing device;
S6, taking-up adjusting apparatus, open and be seated in pump seat by the pump housing of rod-type pumping unit 3 after joining product device;
S7, join product device as need be again regulated, the pump housing of rod-type pumping unit 3 can first be proposed in tubing string 1, enter under passing through again adjusting apparatus select, regulate join produce device oil nozzle open and close, size, after waiting that joining product device regulates, take out adjusting apparatus, the pump housing of rod-type pumping unit 3 is seated in pump seat again.
Before work starts, the regulating separate stratum production string of the present embodiment can select the quantity of envelope match system according to the quantity of oil reservoir, and each parts are assembled in turn, the precalculated position to oil well 14 is entered under the regulating separate stratum production string assembled, make all have one to join by the middle and upper part of each oil reservoir of the well head in shaft bottom and produce device corresponding setting with it, and the top of each oil reservoir all there is a packing device.In order to regulate each to join product device, need temporarily first the pump housing of rod-type pumping unit 3 not to be seated in pump seat.
In work, when needs oil production by layer or water detection, is produced from device position to joining from entering adjusting apparatus tubing string 1 top, oil nozzle keying, the size of product device are joined in adjustment, after waiting that joining product device regulates, and taking-up adjusting apparatus, the pump housing of rod-type pumping unit 3 is seated in pump seat, open rod-type pumping unit 3, the liquid in oil reservoir is automatically pumped to join from oil reservoir and produces device, flows through regulating separate stratum production string and arrives more than ground; When needs water filling, by rod-type pumping unit 3, water can be injected oil reservoir from ground via joining the oil nozzle producing device.
In sum, the tubing string 1 of the regulating separate stratum production string of the present embodiment stands in oil well 14, and the bottom end closure of tubing string 1, tubing string 1 is provided with the rod-type pumping unit 3 and many group envelope match systems that are communicated with in turn, and often group envelope match system includes the packing device that is communicated with in turn and regulatablely joins product device; Packing device is arranged at the top of oil reservoir, and joins product device for isolated protection, joins and produces the middle and upper part that device is arranged at oil reservoir; Oil production by layer method of the present invention carries out work based on this regulating separate stratum production string.Regulating separate stratum production string of the present invention and oil production by layer method join product device by regulation and control, each oil reservoir can be made to be in relatively independent pressure system, avoid interlayer interference, and can control the flowing pressure of layering, each layer potentiality are played to greatest extent, and join product device and can be used for the work such as oil recovery, water detection, water blockoff, by integrated constructions such as oil production by layer, water detection, water blockoffs, only need one-trip string just can realize three kinds of technical measures.
Embodiments of the invention provide in order to example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (9)
1. a regulating separate stratum production string, comprise the tubing string (1) of the bottom end closure stood in oil well (14), described oil well (14) is through with multiple oil reservoir, it is characterized in that, also comprise: described tubing string (1) is provided with the rod-type pumping unit (3) and many group envelope match systems that are communicated with in turn; Often organize described envelope match system include the packing device that is communicated with in turn and regulatablely join product device, described packing device is arranged at the top of described oil reservoir, and joins product device for described in isolated protection, described in join and produce the middle and upper part that device is arranged at described oil reservoir.
2. regulating separate stratum production string according to claim 1, is characterized in that, also comprises adjusting apparatus, and described adjusting apparatus joins the oil nozzle keying situation of producing device described in controlling to adjust.
3. regulating separate stratum production string according to claim 1, it is characterized in that, between described rod-type pumping unit (3) and envelope match system, being also communicated with the producing fluid level testing valve (5) of the production status for monitoring described rod-type pumping unit (3) by described tubing string (1).
4. regulating separate stratum production string according to claim 3, it is characterized in that, between described producing fluid level testing valve (5) and envelope match system, be also communicated with the expansion bend (6) for tubing string described in flexible compensation (1) movement by described tubing string (1).
5. regulating separate stratum production string according to claim 4, is characterized in that, is also communicated with the sand-proof pipe (4) for sand control filtering by described tubing string between described rod-type pumping unit (3) and producing fluid level testing valve (5).
6. regulating separate stratum production string according to claim 5, it is characterized in that, described oil well (14) is through with two oil reservoirs, two described oil reservoirs comprise the first oil reservoir district (9) and the second oil reservoir district (12), the quantity of described envelope match system is two, join product device described in two and comprise the first production mandrel (8) and the second production mandrel (11), two described packing devices comprise the first packer (7) and the second packer (10), described rod-type pumping unit (3), sand-proof pipe (4), producing fluid level testing valve (5), expansion bend (6), first packer (7), first production mandrel (8), second packer (10) is communicated with by described tubing string (1) in turn with the second production mandrel (11), described first packer (7) and the second packer (10) are arranged at the top in described first oil reservoir district (9) and the second oil reservoir district (12) respectively, and described first production mandrel (8) and the second production mandrel (11) are arranged at the middle and upper part in described first oil reservoir district (9) and the second oil reservoir district (12) respectively.
7. regulating separate stratum production string according to claim 1, it is characterized in that, described rod-type pumping unit (3) comprises sucker rod (2), the pump housing and pump seat, and described sucker rod (2) stands on the top of the described pump housing, and the described pump housing is plugged in described pump seat.
8. regulating separate stratum production string according to claim 1, is characterized in that, the bottom of described tubing string (1) is closed by high pressure plug (13).
9. an oil production by layer method, is characterized in that, is to carry out work based on the regulating separate stratum production string as described in claim 1-8.
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| CN201510355421.0A CN104989326A (en) | 2015-06-24 | 2015-06-24 | Regulating separate layer production string and separate layer oil production method |
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Cited By (6)
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| CN107313764A (en) * | 2017-07-19 | 2017-11-03 | 西安思坦仪器股份有限公司 | Cable-free type producing well regulating multi-zone production rate device and method |
| CN107664025A (en) * | 2017-09-21 | 2018-02-06 | 天津远海采油科技有限公司 | A kind of offshore field underground interlayer matches somebody with somebody production. art |
| CN109025919A (en) * | 2018-10-26 | 2018-12-18 | 中国石油化工股份有限公司 | The recovery method of the dynamic layer recovery ratio of raising oil reservoir time and secondary dynamic layer flow string |
| CN110836108A (en) * | 2018-08-16 | 2020-02-25 | 中国石油天然气股份有限公司 | Injection-production integrated production string |
| CN112377170A (en) * | 2021-01-08 | 2021-02-19 | 中国石油大学胜利学院 | Sand control well oil reservoir testing device |
| CN116378578A (en) * | 2023-05-16 | 2023-07-04 | 陇东学院 | Thickened oil horizontal well subsection oil production string and control method |
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| CN107313764A (en) * | 2017-07-19 | 2017-11-03 | 西安思坦仪器股份有限公司 | Cable-free type producing well regulating multi-zone production rate device and method |
| CN107313764B (en) * | 2017-07-19 | 2024-02-02 | 西安思坦仪器股份有限公司 | Cable-free oil extraction well layered production allocation device and method |
| CN107664025A (en) * | 2017-09-21 | 2018-02-06 | 天津远海采油科技有限公司 | A kind of offshore field underground interlayer matches somebody with somebody production. art |
| CN110836108A (en) * | 2018-08-16 | 2020-02-25 | 中国石油天然气股份有限公司 | Injection-production integrated production string |
| CN109025919A (en) * | 2018-10-26 | 2018-12-18 | 中国石油化工股份有限公司 | The recovery method of the dynamic layer recovery ratio of raising oil reservoir time and secondary dynamic layer flow string |
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| CN112377170A (en) * | 2021-01-08 | 2021-02-19 | 中国石油大学胜利学院 | Sand control well oil reservoir testing device |
| CN112377170B (en) * | 2021-01-08 | 2021-03-26 | 中国石油大学胜利学院 | Sand control well oil reservoir testing device |
| CN116378578A (en) * | 2023-05-16 | 2023-07-04 | 陇东学院 | Thickened oil horizontal well subsection oil production string and control method |
| CN116378578B (en) * | 2023-05-16 | 2024-05-07 | 陇东学院 | Thickened oil horizontal well subsection oil production string and control method |
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Application publication date: 20151021 |