CN108035697A - A kind of cooling method oil base selective water plugging method - Google Patents
A kind of cooling method oil base selective water plugging method Download PDFInfo
- Publication number
- CN108035697A CN108035697A CN201711248874.9A CN201711248874A CN108035697A CN 108035697 A CN108035697 A CN 108035697A CN 201711248874 A CN201711248874 A CN 201711248874A CN 108035697 A CN108035697 A CN 108035697A
- Authority
- CN
- China
- Prior art keywords
- viscous crude
- oil
- water
- stratum
- method described
- Prior art date
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001816 cooling Methods 0.000 title claims abstract description 8
- 239000003129 oil well Substances 0.000 claims description 5
- 235000020681 well water Nutrition 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002349 well water Substances 0.000 claims description 3
- 238000007872 degassing Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 35
- 239000010779 crude oil Substances 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 11
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000002981 blocking agent Substances 0.000 description 4
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention provides a kind of cooling method oil base selective water plugging method, this method includes：It is recovered mobility viscous crude preheating, inject stratum；After viscous crude squeezes, replaced with hot water, viscous crude is all squeezed into stratum, then near wellbore zone heat exchange is carried out with cold water so that viscous crude temperature is dropped to below flex point, is formed and blocked.Viscosity of thickened oil in water layer will not change substantially, and the viscous crude in oil reservoir, decline the row's of returning drop in resistance because contacting viscosity with thin oil, realize that a water blockoff does not block up the selective purpose of oil.The crude oil squeezed into eventually slowly produces stratum, and measure cost is low.
Description
Technical field
The present invention is to be opened on a kind of cooling method oil base selective water plugging method, in particular to one kind applied to conventional waterflooding
The method for sending out thin oil block producing well water blockoff, belongs to oil recovery production field.
Background technology
Oilwell water shutoff refers to carry out water blockoff processing to water logging oil well using mechanical means or chemical method, is gone out with reducing oil well
Water, improves crude output.
Selective water shutoff agent for oil wells mainly has：A. body expanding polymer class water shutoff agent；B. water-soluble polymeric species water shutoff agent；
C. cross-linked polymeric species blocking agent；D. viscous crude class blocking agent is activated；E. organic silicon blocking agent；F. alcohol radical blocking agent etc.；G. oil based cement blocks up
Aqua.
Oil base can have a variety of selections again in oil-base water shutoff agent.Wherein, oil base Gelling Plugging Agent because its own property not
Inhibition can be produced to oil stream, it might even be possible to which as oil stream flows out, but gel will be formed by once running into current, hinder water
The outflow of layer.And the advantages of organosilicon compound oil-base water shutoff agent is that they are good to stratum thermal adaptability, in various temperature
Under the conditions of can play effect, hydrolysis generation silanol mainly occurs for this oil base, and silanol further reacts generation
Poly- silanol, this material is not soluble in water to block water channel so as to deposit.Also a kind of oil base is viscous crude class, is mainly illustrated herein thick
Viscous crude in oils, viscous crude viscosity only when water is run into is just stronger, weakens in oil reservoir viscosity, thus can
To block water layer without influencing oil reservoir.
Viscous crude class shutoff method is all crude oil additive package composition at present, and the addition of additive, can all increase water blockoff
Agent cost.
The content of the invention
It is an object of the present invention to provide a kind of improved viscous crude class oil base selective water plugging method, low cost, nothing
Pollution.
Viscous crude class shutoff method provided by the invention, is to reach water blockoff purpose using viscous crude property, but not any add
Add agent, be a kind of inexpensive, free of contamination cooling method oil base selective water plugging method.
Specific embodiment according to the present invention, cooling method oil base selective water plugging method of the invention include：
Specific embodiment according to the present invention, the present invention select viscous crude as water shutoff agent.Any additive need not be added.
Specific embodiment according to the present invention, cooling method oil base selective water plugging method of the invention include：
It is recovered mobility viscous crude preheating, inject stratum；
After viscous crude squeezes, replaced with hot water, viscous crude is all squeezed into stratum, then near wellbore zone is carried out with cold water
Heat exchange so that viscous crude temperature is dropped to below flex point, is formed and blocked.
Specific embodiment according to the present invention, optionally emaciated face gas viscosity 2000-5000MPa.s, temperature turn the present invention
The viscous crude that more than 70 DEG C of point is as water shutoff agent.Preferably, selected viscous crude temperature flex point is no more than 80 DEG C, and otherwise viscosity is excessive,
Squeeze into stratum difficulty.During concrete application, viscous crude preheats degree can effectively squeeze into stratum, such as first can preheat viscous crude
To 80-90 DEG C, it is recovered mobility, stratum is squeezed into pump truck.It can be kept the temperature during squeezing into boiler car.
Specific embodiment according to the present invention, in method of the invention, after viscous crude squeezes, with more than 70 DEG C hot water
10-15 side is replaced, and viscous crude is all squeezed into stratum.
Specific embodiment according to the present invention, in method of the invention, nearly well is carried out with less than 15 DEG C cold water 30-50 sides
Area exchanges heat so that viscous crude temperature is dropped to below flex point, is formed and blocked.
Specific embodiment according to the present invention, method of the invention are the conventional waterfloodings for 60-70 DEG C of formation temperature
Develop the producing well water blockoff of thin oil block.
The method of the present invention, recovers mobility by first preheating viscous crude, stratum is squeezed into from oil jacket annular space, successively injection heat
Water and cold water, during viscous crude is returned and spat, because temperature is dropped to below flex point, viscosity significantly rises, and is formed and blocked.In water layer
In viscosity of thickened oil will not change substantially, and the viscous crude in oil reservoir, declines the row's of returning drop in resistance because contacting viscosity with thin oil, real
Now a water blockoff does not block up the selective purpose of oil.The crude oil squeezed into eventually slowly produces stratum, and measure cost is low.
In general, beneficial effects of the present invention include：
(1) oil-base water shutoff agent is used, it is pollution-free to stratum.
(2) it is low without additional additive, measure cost.
(3) former tubing string oil jacket annular space squeezes into construction, convenient and efficient.
Embodiment
Illustrate the implementation and application effect of the technology of the present invention below in conjunction with specific embodiment, but these embodiments are not intended to
Limit the scope of the invention.Not operation dated in detail, the routine operation that can refer to fields carry out in embodiment.
Embodiment：
Liaohe Oil Field well, process layer position Xinglongtai oil reservoir, the processing well section 1339.5-1467.8m effective thickness/number of plies
47.9/10,62 DEG C of formation temperature, before measure, produces 63 side of liquid daily, day 1.9 tons of oil-producing, aqueous 97%.Preheating 85 is squeezed into from casing
DEG C self-produced viscous crude (ground degassing viscosity 3564MPa.s, 72 DEG C of temperature flex point) 164 sides, after viscous crude squeezes, with 73 DEG C of heat
13 side of sewage is replaced, then is squeezed into 12 DEG C of 45 sides of cold clear water and carried out stratum heat exchange, when closing well 24 is small after, drive a well normal production.
7 days after measure, averagely produce 40 side of liquid daily, day 6 tons of oil-producing, aqueous 85%.It is tired to increase 192 tons of oil (deducting the crowded viscous crude amount of institute), effectively
64 days phases, positive effect.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of cooling method oil base selective water plugging method, this method include：
It is recovered mobility viscous crude preheating, inject stratum；
After viscous crude squeezes, replaced with hot water, viscous crude is all squeezed into stratum, then carry out near wellbore zone with cold water and change
Heat so that viscous crude temperature is dropped to below flex point, is formed and blocked.
2. according to the method described in claim 1, wherein, the viscous crude is ground degassing viscosity 2000-5000MPa.s, temperature
The viscous crude that more than 70 DEG C of flex point.
3. according to the method described in claim 1, wherein, viscous crude first is preheating to 80-90 DEG C, it is set to recover mobility, with pump
Car injects stratum.
4. according to the method described in claim 1, wherein, kept the temperature during viscous crude injection with boiler car.
5. according to the method described in claim 1, wherein, after viscous crude squeezes, pushed up with more than 70 DEG C hot water 10-15 sides
Replace, viscous crude is all squeezed into stratum.
6. according to the method described in claim 1, wherein, near wellbore zone heat exchange is carried out with less than 15 DEG C cold water 30-50 sides so that
Viscous crude temperature is dropped to below flex point, is formed and blocked.
7. according to the method described in claim 1, wherein, this method is the conventional waterflooding exploitation for 60-70 DEG C of formation temperature
The producing well water blockoff of thin oil block.
8. according to the method described in claim 1, wherein, viscous crude is to inject stratum from oil well oil jacket annular space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248874.9A CN108035697B (en) | 2017-12-01 | 2017-12-01 | Oil-based selective water plugging method by cooling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248874.9A CN108035697B (en) | 2017-12-01 | 2017-12-01 | Oil-based selective water plugging method by cooling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035697A true CN108035697A (en) | 2018-05-15 |
| CN108035697B CN108035697B (en) | 2020-07-10 |
Family
ID=62095049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711248874.9A Active CN108035697B (en) | 2017-12-01 | 2017-12-01 | Oil-based selective water plugging method by cooling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035697B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746829A (en) * | 2019-10-30 | 2021-05-04 | 中国石油化工股份有限公司 | Water-plugging viscosity-reducing exploitation method for thick oil in high water-cut period |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437737A (en) * | 2013-09-02 | 2013-12-11 | 中国石油化工股份有限公司 | Method for water plugging for petroleum well with oil phase microparticle plugging agent |
| WO2014107278A1 (en) * | 2013-01-07 | 2014-07-10 | Baker Hughes Incorporated | Shape-change particle plug system |
| CN104130760A (en) * | 2014-07-04 | 2014-11-05 | 中国石油天然气股份有限公司 | Hypercoagulable thick oil activating agent used in water shut-off, and oil well water shut-off method |
| CN104481480A (en) * | 2014-12-04 | 2015-04-01 | 中国石油天然气股份有限公司 | Deep selective water plugging method of oil well and used plugging agent solution |
| CN104531109A (en) * | 2014-12-23 | 2015-04-22 | 成都得道实业有限公司 | Organic synthetic plugging granules for well drilling, and preparation method and application thereof |
-
2017
- 2017-12-01 CN CN201711248874.9A patent/CN108035697B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014107278A1 (en) * | 2013-01-07 | 2014-07-10 | Baker Hughes Incorporated | Shape-change particle plug system |
| CN103437737A (en) * | 2013-09-02 | 2013-12-11 | 中国石油化工股份有限公司 | Method for water plugging for petroleum well with oil phase microparticle plugging agent |
| CN104130760A (en) * | 2014-07-04 | 2014-11-05 | 中国石油天然气股份有限公司 | Hypercoagulable thick oil activating agent used in water shut-off, and oil well water shut-off method |
| CN104481480A (en) * | 2014-12-04 | 2015-04-01 | 中国石油天然气股份有限公司 | Deep selective water plugging method of oil well and used plugging agent solution |
| CN104531109A (en) * | 2014-12-23 | 2015-04-22 | 成都得道实业有限公司 | Organic synthetic plugging granules for well drilling, and preparation method and application thereof |
Non-Patent Citations (4)
| Title |
|---|
| 宋燕高等: "油田化学堵水调剖剂研究进展", 《精细石油化工进展》 * |
| 王丽等: "化学堵水剂在油田生产中的应用", 《石油化工应用》 * |
| 肖传敏等: "油田化学堵水调剖综述", 《精细石油化工进展》 * |
| 胡之力等: "《油田化学剂及应用》", 30 July 2005 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746829A (en) * | 2019-10-30 | 2021-05-04 | 中国石油化工股份有限公司 | Water-plugging viscosity-reducing exploitation method for thick oil in high water-cut period |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108035697B (en) | 2020-07-10 |
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