CN205154105U - Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well - Google Patents
Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well Download PDFInfo
- Publication number
- CN205154105U CN205154105U CN201520887563.7U CN201520887563U CN205154105U CN 205154105 U CN205154105 U CN 205154105U CN 201520887563 U CN201520887563 U CN 201520887563U CN 205154105 U CN205154105 U CN 205154105U
- Authority
- CN
- China
- Prior art keywords
- water injection
- pipeline
- pump
- acidproof
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well is including water storage tank (3), pipeline booster pump (4), join in marriage fluid reservoir (5), acidproof injector pump (6) and connect the pipeline, distributing room for water injection (1) water injection pipeline valve (2) is through pipeline connection to water storage tank (3), water storage tank (3), pipeline booster pump (4), join in marriage fluid reservoir (5), acidproof injector pump (6) management line is connected in order, acidproof injector pump (6) through pipeline connection to water injection well well head valve (7), oil pipe in the well is inserted in valve (7). The utility model discloses the acidizing of mainly used hyposmosis sensitiveness oil reservoir water injection well is separated stifledly, adopts little discharge capacity to inject into in succession, increases the effective acting time and the distance of acidizing fluid, does benefit to to remove nearly well and oil reservoir jam, improves and separates stifled effect, the simultaneous control injection rate can prevent high -speed stratum clay mineral and the foreign particles migration jam stratum pore throat that leads to that pour into into, prevents fast quick phenomenon, avoids the reservoir injury. The utility model discloses easy and simple to handle, safe and reliable can be under construction in all weather.
Description
Technical field
The utility model relates to the structure improvement opportunity of oilfield downhole operation device, is mainly applicable to hyposmosis sensible reservoir or blocks the acidification to dispel block of serious oil-water well, especially water injection well small displacement continuously acidizing de-plugging device systems.
Background technology
In oil field hyposmosis sensible reservoir waterflooding extraction process, the sensitive minerals of reservoir, reservoir and flow space, rock surface character and properties of fluid in bearing stratum etc. by external condition affect be easy to cause reservoir especially near wellbore zone permeability reduce; Meanwhile, cement the well, outside fluid and rock or reservoir fluid is incompatible, capillary resistance and solid phase particles migration etc. are all easy to cause water injection well near wellbore zone seepage channel to block in the process such as flooding production and well workover.
Acidification to dispel block removes water injection well near wellbore zone to pollute, and recovers a kind of effective measures of water filling performance.Conventional acidulation de-plugging process adopts huge discharge pump truck (700 types or 1400 types) to carry out acidizing stimulation by the bottom of acid solution Injection Well, working procedure generally includes and returns row for acid, crowded acid, replacement, closing well reaction and acid solution, and device systems comprises pump truck, tank car, dosing pond etc.
Due to the special nature of oil field hyposmosis sensible reservoir, conventional acidulation de-plugging process is adopted to carry out water injection well acidification to dispel block, there is following drawback: when constructing with common pump truck, discharge capacity is large, pressure is high, and working solution is difficult to break through blocking section in a short time, and acid solution is difficult to inject, operation pressure reaches upper pressure limit very soon, cannot continue construction, task difficulty is large, and security risk is high; Because injection rate is too fast, formation fines under the effect of high-velocity fluid in hole migration and and assemble at throat place, cause pore plugging and in-place permeability to reduce, cause fast quick injury; A large amount of acid solution only consumes at nearly Jing Chu simultaneously, and can not enter reservoir deep gravity anomaly, plug removal radius is little, directly affects acidification to dispel block effect.
Utility model content
The purpose of this utility model: provide water injection well small displacement continuously acidizing de-plugging device systems, for hyposmosis sensible reservoir water injection well acidification to dispel block.
The purpose of this utility model will be realized by following technical measures: comprise water tank, blower pump for pipeline, Agitation Tank, acidproof injection pump and connecting line; Distributing room for water injection waterflood-transmission line valve is connected to water tank through pipeline, and water tank, blower pump for pipeline, Agitation Tank, acidproof injection pump connect in turn through pipeline, and acidproof injection pump is connected to wellhead of water injection well valve through pipeline, head valve access OIH pipe.
Especially, acidproof injection pump is high-pressure frequency-conversion pump, and its injection pressure approximates or is a bit larger tham the maximum withstand voltage of well head.
Especially, the maximum pump discharge of acidproof injection pump is less, is no more than 5m
3/ h, during injection, discharge capacity can timely adjustment as required, and its continuous injection length, according to blocking type and Program design, is generally 3-5 days.
Especially, Agitation Tank is arranged negative pressure jet dosing mouth, in tank, agitator is set, tank skin, agitator and annex acid corrosion-resistant thereof.
Especially, water tank is connected with distributing room for water injection waterflood-transmission line valve through pipeline.
Especially, acidproof injection pump is connected with wellhead of water injection well valve through pipeline.
Advantage of the present utility model and effect: the utility model is mainly used in hyposmosis sensible reservoir water injection well acidification to dispel block, adopt small displacement to inject continuously, increases effective acting time and the distance of acid solution, be beneficial to and remove nearly well and oil layer blocking, improve plugging removal effect; Control injection rate simultaneously, can prevent from injecting at a high speed the stratum clay mineral and impurity particle migration blocking pore throat that cause, prevent fast quick phenomenon, avoid reservoir damage.The utility model is easy and simple to handle, safe and reliable, can all-weather construction.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation.
Reference numeral comprises: distributing room for water injection 1, waterflood-transmission line valve 2, water tank 3, blower pump for pipeline 4, Agitation Tank 5, acidproof injection pump 6, head valve 7.
Detailed description of the invention
The utility model principle is, uses the utility model to carry out small displacement and injects acidification to dispel block construction continuously, increase effective acting time and the distance of acid solution, improve plugging removal effect; Control injection rate, prevent from injecting at a high speed the stratum clay mineral that causes and impurity particle and migrate and block pore throat.
The utility model comprises: water tank 3, blower pump for pipeline 4, Agitation Tank 5, acidproof injection pump 6 and connecting line.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, distributing room for water injection 1 waterflood-transmission line valve 2 is connected to water tank 3 through pipeline, water tank 3, blower pump for pipeline 4, Agitation Tank 5, acidproof injection pump 6 connect in turn through pipeline, and acidproof injection pump 6 is connected to wellhead of water injection well valve 7 through pipeline, and valve 7 accesses OIH pipe.
In aforementioned, acidproof injection pump 6 is high-pressure frequency-conversion pump, and its injection pressure approximates or is a bit larger tham the maximum withstand voltage of well head.
In aforementioned, the maximum pump discharge of acidproof injection pump 6 is less, is no more than 5m
3/ h, during injection, discharge capacity can timely adjustment as required, and its continuous injection length, according to blocking type and Program design, is generally 3-5 days.
In aforementioned, Agitation Tank 5 arranged negative pressure jet dosing mouth, in tank, agitator is set, tank skin, agitator and annex acid corrosion-resistant thereof.
In aforementioned, water tank 3 is connected with distributing room for water injection waterflood-transmission line valve through pipeline.
In aforementioned, acidproof injection pump 6 is connected with wellhead of water injection well valve through pipeline.
In the utility model embodiment, acidification to dispel block operation is as follows:
1) distributing room for water injection 1 water is put in water tank 3 through waterflood-transmission line, valve 2, connecting line.
2) start blower pump for pipeline 4, water is squeezed in Agitation Tank 5, add load weighted acidifying raw material by negative pressure jet dosing mouth, and turn on agitator stirs.
3) start acidproof injection pump 6, the acidifying unblocking liquid configured is injected well head, design discharge capacity 0.5-3m
3/ h.
4) acid solution is entered by oil pipe and contacts with near wellbore zone obstruction, adopts high-pressure small-displacement pumping acid solution, discharge capacity 0.5m
3-1.0m
3.Fresh acid solution is gathered near wellbore zone, corrosion obstruction, dredging duct, near wellbore zone.Along with acid solution continue enter, corrosion, propelling, acid solution immerses duct, near wellbore zone gradually.This stage belongs to the high pressure de-plugging stage, and pressure is no more than the design pressure upper limit.
5) blocking of acid solution breakthrough near wellbore zone continues to advance to earth formation deep, and corrosion rock stratum and obstruction open passage gradually, and follow-up acid solution slowly continues to enter this passage, and limit corrosion border advances, formation fingering, and efficient solution is except earth formation deep blocking.This stage belongs to de-plugging break-through phase, and pressure durations declines, when pressure is steady, and de-plugging success.
In the utility model, small displacement is carried out to hyposmosis sensible reservoir water injection well and injects acidification to dispel block continuously, increase effective acting time and the distance of acid solution, be beneficial to and remove nearly well and oil layer blocking, improve plugging removal effect; Control injection rate simultaneously, can prevent from injecting at a high speed the stratum clay mineral and impurity particle migration blocking pore throat that cause, prevent fast quick phenomenon, avoid reservoir damage.Compared with conventional acidulation process equipment, the utility model is easy and simple to handle, safe and reliable, can all-weather construction.
Claims (6)
1. water injection well small displacement continuously acidizing de-plugging device systems, comprises water tank (3), blower pump for pipeline (4), Agitation Tank (5), acidproof injection pump (6) and connecting line; It is characterized in that, distributing room for water injection (1) waterflood-transmission line valve (2) is connected to water tank (3) through pipeline, water tank (3), blower pump for pipeline (4), Agitation Tank (5), acidproof injection pump (6) connect in turn through pipeline, acidproof injection pump (6) is connected to wellhead of water injection well valve (7) through pipeline, valve (7) access valve (7) access OIH pipe.
2. water injection well small displacement continuously acidizing de-plugging device systems as claimed in claim 1, it is characterized in that, acidproof injection pump (6) is high-pressure frequency-conversion pump, and its maximum injection pressure approximates or is a bit larger tham the maximum withstand voltage of well head.
3. water injection well small displacement continuously acidizing de-plugging device systems as claimed in claim 1, it is characterized in that, the maximum pump discharge of acidproof injection pump (6) is less, is no more than 5m
3/ h, during injection, discharge capacity can timely adjustment as required, and its continuous injection length, according to blocking type and Program design, is generally 3-5 days.
4. water injection well small displacement continuously acidizing de-plugging device systems as claimed in claim 1, is characterized in that, Agitation Tank (5) is arranged negative pressure jet dosing mouth, arrange agitator in tank, tank skin, agitator and annex acid corrosion-resistant.
5. water injection well small displacement continuously acidizing de-plugging device systems as claimed in claim 1, it is characterized in that, water tank (3) is connected with distributing room for water injection (1) waterflood-transmission line valve (2) through pipeline.
6. water injection well small displacement continuously acidizing de-plugging device systems as claimed in claim 1, it is characterized in that, acidproof injection pump (6) is connected with wellhead of water injection well valve (7) through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887563.7U CN205154105U (en) | 2015-11-10 | 2015-11-10 | Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887563.7U CN205154105U (en) | 2015-11-10 | 2015-11-10 | Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154105U true CN205154105U (en) | 2016-04-13 |
Family
ID=55689813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520887563.7U Active CN205154105U (en) | 2015-11-10 | 2015-11-10 | Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154105U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555579A (en) * | 2017-01-01 | 2017-04-05 | 陕西海山能源发展有限公司 | A kind of oil-water well fixed tubular column acidification technique system |
| CN106593395A (en) * | 2017-01-01 | 2017-04-26 | 陕西海山能源发展有限公司 | Oil well selective acidizing process system |
| CN107060719A (en) * | 2017-01-01 | 2017-08-18 | 陕西海山能源发展有限公司 | A kind of oil well work-in-progress control treatment process system |
| CN107762458A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Concentric separate injection and small-displacement acidification integrated system and process |
| CN108590603A (en) * | 2018-05-14 | 2018-09-28 | 克拉玛依市鑫众石油工程技术服务有限公司 | A kind of oil field special type special mobile formula superhigh temperature super-pressure complexes |
| CN113250653A (en) * | 2020-02-13 | 2021-08-13 | 中国石油天然气股份有限公司 | Acidification method of water injection well |
| CN114810010A (en) * | 2022-04-21 | 2022-07-29 | 西安奥德石油工程技术有限责任公司 | Small-displacement continuous acidizing and plug removing equipment system for oil field water injection well |
-
2015
- 2015-11-10 CN CN201520887563.7U patent/CN205154105U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762458A (en) * | 2016-08-16 | 2018-03-06 | 中国石油天然气股份有限公司 | Concentric separate injection and small-displacement acidification integrated system and process |
| CN106555579A (en) * | 2017-01-01 | 2017-04-05 | 陕西海山能源发展有限公司 | A kind of oil-water well fixed tubular column acidification technique system |
| CN106593395A (en) * | 2017-01-01 | 2017-04-26 | 陕西海山能源发展有限公司 | Oil well selective acidizing process system |
| CN107060719A (en) * | 2017-01-01 | 2017-08-18 | 陕西海山能源发展有限公司 | A kind of oil well work-in-progress control treatment process system |
| CN108590603A (en) * | 2018-05-14 | 2018-09-28 | 克拉玛依市鑫众石油工程技术服务有限公司 | A kind of oil field special type special mobile formula superhigh temperature super-pressure complexes |
| CN113250653A (en) * | 2020-02-13 | 2021-08-13 | 中国石油天然气股份有限公司 | Acidification method of water injection well |
| CN114810010A (en) * | 2022-04-21 | 2022-07-29 | 西安奥德石油工程技术有限责任公司 | Small-displacement continuous acidizing and plug removing equipment system for oil field water injection well |
| CN114810010B (en) * | 2022-04-21 | 2022-12-20 | 西安奥德石油工程技术有限责任公司 | Small-displacement continuous acidizing and plug removing equipment system for oil field water injection well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205154105U (en) | Stifled equipment system is separated in continuous acidizing of little discharge capacity of water injection well | |
| CN103821474B (en) | Ultra-low permeability oil reservoir deep profile control method | |
| CN101718184B (en) | Foamed acid washing technological method for horizontal well | |
| CN105114050B (en) | A kind of new fracturing pump injecting method | |
| CN106089166A (en) | A kind of fine and close oil reservoir CO2foam handle up improve recovery ratio method | |
| CN103306659B (en) | A kind of fracturing technology of realizing superelevation flow conductivity | |
| CN103334724B (en) | Method for exploiting oil reservoir by nano-magnetofluid displacement and well pattern structure thereof | |
| CN110424912A (en) | Method, the row's of returning service unit and the completion structure of tubing string replacement filling layer are not changed | |
| CN102587873A (en) | Carbon dioxide huff-puff water-control oil-increasing method for horizontal well | |
| CN103089195A (en) | Old well plugging method for constructing underground gas storage by depleted oil-gas reservoir | |
| CN103470212B (en) | Active drilling and hole sealing device and method | |
| CN109723423A (en) | It is a kind of to utilize the up-front compound acid fracturing method of phase-change material supporting crack | |
| CN102913274B (en) | System for increasing yield of gas excavation borehole and method thereof | |
| CN105178910A (en) | Horizontal well water plugging process pipe column and method | |
| CN106837268B (en) | Control water gas-injection oil-production integration method for increasing | |
| CN102418507A (en) | Low-cost deep blockage removing method for water injection well | |
| CN103362542A (en) | Sectionalized hole sealing method for bedding gas extraction drilled holes | |
| CN104533354A (en) | Plug type sand control method for slim hole sidetracked well | |
| CN103306645B (en) | Horizontal well the pressure of the drill splits completion tubular column and technique thereof | |
| CN103410467B (en) | Continuous under-pressure drilling and hole sealing device and method | |
| CN104178100A (en) | Multielement profile control system suitable for water flooding exploitation oil fields and profile control technology | |
| CN203394478U (en) | Well pattern structure of nano-magnetic fluid displacement exploitation oil reservoir | |
| CN103225496A (en) | Profile control method for immobile pipe column of injection well | |
| CN101747879B (en) | Baffle for thin layer oilfield controlling coning of bottom water and injection method thereof | |
| CN103470221A (en) | Underbalance tubing, no-killing gas lifting, shaft pumping and pump detecting combined method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |