CN104234671A - Water-gathering co-well layering co-charging process tubular column - Google Patents
Water-gathering co-well layering co-charging process tubular column Download PDFInfo
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- CN104234671A CN104234671A CN201410490267.3A CN201410490267A CN104234671A CN 104234671 A CN104234671 A CN 104234671A CN 201410490267 A CN201410490267 A CN 201410490267A CN 104234671 A CN104234671 A CN 104234671A
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Abstract
The invention relates to a water-gathering co-well layering co-charging process tubular column, which mainly solves the problem that the oil field injection well exploitation way of the existing oil field process tubular column severely influences the yield of the oil field and is violently subjected to the influence of the thickness of an isolation layer. The water-gathering co-well layering co-charging process tubular column is characterized in that an annular space between a casing pipe (1) and an outer layer oil pipe (2) is divided by a plurality of washable well-passing cable packers (10) into different positions, an inner layer oil pipe (3) is arranged inside the outer layer oil pipe (2), the an insertion sealing device (5) is arranged between the bottom end of the inner layer oil pipe (3) and the outer layer oil pipe (2), an eccentric injector (4) is arranged in the position on the upper part of the insertion sealing device (5), and an eccentric water allocator (6) is arranged in the position on the lower part of the insertion sealing device (5). By adopting the water-gathering co-well layering co-charging process tubular column, the co-well subsequent water flooding and polymer flooding can be simultaneously carried out after the polymer flooding upward movement is realized, both the water flooding and the polymer flooding are respectively injected in a layering manner, the exploitation effect is improved, and the influence of the thickness of the isolation layer can be avoided.
Description
Technical field
The present invention relates to oilfield, a kind of water is poly-specifically notes process pipe string with well layering is same.
Background technology
Due to by the restriction of oil field process pipe string structure, injection well, penetrating out after oil reservoir position notes coalescent bundle, returns shutoff on carrying out, top is not employed oil reservoir dead chick and open, continue the poly-exploitation of note the poly-oil reservoir terminated of note.But this development mode is comparatively large to the yield effect in oil field, by minimizing sequent water flooding to the contribution to yield in oil field, and this development mode is larger by the impact of compartment thickness.
Summary of the invention
The oilfield injection well mining type of existing oil field process pipe string is adopted to affect greatly, by the larger deficiency of the impact of compartment thickness field output in order to overcome, the invention provides a kind of water to gather with well layering with noting process pipe string, this water is poly-can be realized poly-driving with well layering with note process pipe string and return rear same well sequent water flooding and carry out with poly-driving simultaneously, equal layering is injected, improve development effectiveness, and do not affect by compartment thickness.
Technical scheme of the present invention is: a kind of water is poly-notes process pipe string with well layering is same, comprise sleeve pipe, inside pipe casing is equipped with outer oil pipe, annular space between described sleeve pipe from outer oil pipe is separated into different layer positions by several washing well cable-passing packers, described outer oil pipe inside is equipped with internal layer oil pipe, and be provided with grafting sealing device between internal layer oil pipe bottom and outer oil pipe, the layer position on grafting sealing device top is built-in with the poly-device of eccentric note, and the layer position of grafting sealing device bottom is built-in with eccentric injection mandrel;
Described grafting sealing device comprises insertion pipe, hermetically sealed case, described insertion pipe top is connected with internal layer oil pipe, and hermetically sealed case top is connected with outer oil pipe, and bottom is connected with lower contact, insertion pipe is placed in hermetically sealed case inside, and sealing inner sleeve is provided therebetween.
The present invention has following beneficial effect: owing to taking such scheme, adopt inside and outside two-layer oil pipe, stratum is divided into two-layer up and down by the sealing device of grafting simultaneously, and levels is divided into different layer positions by packer, layered polymer injection is carried out by the annular space between inside and outside layer oil pipe in upper strata, and lower floor carries out seperated layer water injection by internal layer oil pipe inner chamber, realizes poly-play being returned rear same well sequent water flooding and carries out with poly-driving simultaneously, and each layer injection rate injection pressure is measurable and controllable, improves displacement efficiency further from face.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of grafting sealing device.
1-sleeve pipe in figure, the outer oil pipe of 2-, 3-internal layer oil pipe, the poly-device of 4-note, 5-grafting sealing device, 6-eccentric injection mandrel, 7-steel ball, 8-screen casing, 9-cable, 10-washing well cable-passing packer, 51-insertion pipe, 52-hermetically sealed case, 53-O type circle, 54-skeleton ring, 55-seals inner sleeve, 56-lower contact.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1, Fig. 2, a kind of water is poly-notes process pipe string with well layering is same, comprise sleeve pipe 1, sleeve pipe 1 inside is equipped with outer oil pipe 2, outer oil pipe 2 is 2 cun of half plain end oil well pipe, and the annular space between described sleeve pipe 1 from outer oil pipe 2 is separated into different layer positions by several washing well cable-passing packers 10, and cable 9 can through above-mentioned washing well cable-passing packer 10, the each layer of equal correspondence in position is provided with the poly-device 4 of eccentric note, and the poly-device 4 of note adopts electric-controlled type.Described outer oil pipe 2 inside is equipped with internal layer oil pipe 3, and is provided with grafting sealing device 5 between internal layer oil pipe 3 bottom and outer oil pipe 2, and the layer position of grafting sealing device 5 bottom is built-in with eccentric injection mandrel 6.Described grafting sealing device 5 comprises insertion pipe 51, hermetically sealed case 52, and wherein insertion pipe 51 top is connected with internal layer oil pipe 3, and hermetically sealed case 52 top is connected with outer oil pipe 2, and bottom is connected with lower contact 56.After tubing string connects, insertion pipe 51 is placed in hermetically sealed case 52 inside, toroidal cavity is formed between hermetically sealed case about 52 two ends and insertion pipe 51, sealing inner sleeve 55 is provided with in this cavity, and sealed by O type circle 53 between sealing inner sleeve 55 and hermetically sealed case 52, skeleton ring 54 is provided with, to ensure sealing between hermetically sealed case 52, sealing inner sleeve 55 and insertion pipe 51 between sealing inner sleeve 55 end and hermetically sealed case 52.
When lower tubular column, first lower outer oil pipe 2, rear lower internal layer oil pipe 3, wherein cable 9 is together transferred with outer oil pipe 2, and the hermetically sealed case 52 of grafting sealing device 5 and sealing inner sleeve 55 are together transferred after being connected with outer oil pipe 2; Insertion pipe 51 is connected to internal layer oil pipe 3 lower end, transfers be placed in hermetically sealed case 52 with internal layer oil pipe 3.Oil reservoir is divided into two-layer up and down by grafting sealing device 5, and wherein upper layer position is note poly layer, and jointly form two annular spaces by sleeve pipe 1, outer oil pipe 2, internal layer oil pipe 3, lower layer position is water filling layer, then form an annular space by sleeve pipe 1, outer oil pipe 2.After having descended tubing string, suppress the packer of release note poly layer position from ectonexine oil pipe annular space, suppress the packer of release water filling layer position from internal layer oil pipe 2 inside.The pressure that the sealing situation of packer at different levels gathers the inlet and outlet pressure sensor collection of device 4 or automatically controlled eccentric injection mandrel 6 by automatically controlled bias note judges.Grafting sealing device sealing situation can adopt following methods: keep ectonexine oil pipe annular space with no pressure, suppress in internal layer oil pipe 3, as returned water from ectonexine oil pipe annular space, the blow-by of grafting sealing device is described, does not return water and one-way sealing is described; Keep with no pressure in internal layer oil pipe 3, ectonexine oil pipe annular space is suppressed, and internal layer oil pipe returns water and the blow-by of grafting sealing device is described, does not return water and the sealing of grafting sealing device is described.
Adopt this tubing string, note poly layer position and water filling layer position anti-flushing well are for carry out simultaneously, anti-flushing well liquid enters from oil jacket annular space, and after note poly layer position washing well cable-passing packer 10 well-flushing passage, the poly-device 4 of automatically controlled bias note, enter ectonexine oil pipe annular space, realization is poly-drives layer position anti-flushing well.Anti-flushing well liquid enters interior pipe through water filling layer position washing well cable-passing packer well-flushing passage, screen casing 8, steel ball 7, realizes water filling layer position anti-flushing well.
Claims (1)
1. a water gathers with well layering with noting process pipe string, comprise sleeve pipe (1), sleeve pipe (1) inside is equipped with outer oil pipe (2), it is characterized in that: described sleeve pipe (1) is separated into different layer positions from the annular space between outer oil pipe (2) by several washing well cable-passing packers (10), described outer oil pipe (2) inside is equipped with internal layer oil pipe (3), and be provided with grafting sealing device (5) between internal layer oil pipe (3) bottom and outer oil pipe (2), the layer position on grafting sealing device (5) top is built-in with the poly-device (4) of eccentric note, the layer position of grafting sealing device (5) bottom is built-in with eccentric injection mandrel (6),
Described grafting sealing device (5) comprises insertion pipe (51), hermetically sealed case (52), described insertion pipe (51) top is connected with internal layer oil pipe (3), hermetically sealed case (52) top is connected with outer oil pipe (2), bottom is connected with lower contact (56), it is inner that insertion pipe (51) is placed in hermetically sealed case (52), and sealing inner sleeve (55) is provided therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410490267.3A CN104234671A (en) | 2014-09-23 | 2014-09-23 | Water-gathering co-well layering co-charging process tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410490267.3A CN104234671A (en) | 2014-09-23 | 2014-09-23 | Water-gathering co-well layering co-charging process tubular column |
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| CN104234671A true CN104234671A (en) | 2014-12-24 |
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| CN201410490267.3A Pending CN104234671A (en) | 2014-09-23 | 2014-09-23 | Water-gathering co-well layering co-charging process tubular column |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332677A (en) * | 2015-11-06 | 2016-02-17 | 中国石油天然气股份有限公司 | Cable direct-controlled water distribution system |
| CN106285588A (en) * | 2015-06-11 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of preset cable direct controlled type automatically controlled layered polymer injection process pipe string and note poly-method |
| CN109252834A (en) * | 2017-07-13 | 2019-01-22 | 中国石油化工股份有限公司 | The concentric long-acting layered water filler of binary channels and method |
| CN111441752A (en) * | 2020-04-15 | 2020-07-24 | 王皓 | Multilayer polymer injection well washing method for coiled tubing |
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| WO2008115359A1 (en) * | 2007-03-22 | 2008-09-25 | Exxonmobil Upstream Research Company | Granular electrical connections for in situ formation heating |
| CN101059073A (en) * | 2007-05-11 | 2007-10-24 | 大庆油田有限责任公司 | Same-well double-medium synchronous separate injection tubing string tool and its separate injection method |
| CN201416430Y (en) * | 2009-01-16 | 2010-03-03 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Hydraulic controlled type concentric dual-pipe separate injection pipe string |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106285588A (en) * | 2015-06-11 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of preset cable direct controlled type automatically controlled layered polymer injection process pipe string and note poly-method |
| CN105332677A (en) * | 2015-11-06 | 2016-02-17 | 中国石油天然气股份有限公司 | Cable direct-controlled water distribution system |
| CN109252834A (en) * | 2017-07-13 | 2019-01-22 | 中国石油化工股份有限公司 | The concentric long-acting layered water filler of binary channels and method |
| CN109252834B (en) * | 2017-07-13 | 2024-05-24 | 中国石油化工股份有限公司 | Concentric double-channel long-acting layered water injection device and method |
| CN111441752A (en) * | 2020-04-15 | 2020-07-24 | 王皓 | Multilayer polymer injection well washing method for coiled tubing |
| CN111441752B (en) * | 2020-04-15 | 2021-12-10 | 江苏瑞亿石油机械有限公司 | Multilayer polymer injection well washing method for coiled tubing |
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Application publication date: 20141224 |
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