CN107313758A - A kind of transfer drive method for improving oil recovery rate - Google Patents
A kind of transfer drive method for improving oil recovery rate Download PDFInfo
- Publication number
- CN107313758A CN107313758A CN201710783892.0A CN201710783892A CN107313758A CN 107313758 A CN107313758 A CN 107313758A CN 201710783892 A CN201710783892 A CN 201710783892A CN 107313758 A CN107313758 A CN 107313758A
- Authority
- CN
- China
- Prior art keywords
- water
- mud
- oil recovery
- injection
- transfer drive
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a kind of transfer drive method for improving oil recovery rate, belong to two, technical field of tertiary oil recovery.The profile control agent that the present invention is made using cement mortar preferentially enters the low High Permeability Interval of flow resistance, and generation solid precipitation in the given time, and High Permeability Interval is blocked, and forces injection water change flow direction and hyposmosis interval in entering.Gradually dissolve, be swelled in the part that the polymer added in mud is contacted with injection water, add the viscosity of water, so as to reduce oil and water mobility ratio, improve area and sweep oily efficiency, expand the radius of influence of profile control, the residual oil further displaced in stratum, to reduce well water, so as to improve oil recovery factor.
Description
Technical field
The present invention relates to two, technical field of tertiary oil recovery, and in particular to a kind of transfer drive method of raising oil recovery rate.
Background technology
Elongated with the oil field development time, oil-field aqueous rises year by year, in interlayer, layer, horizontal contradiction increasingly protrude,
Improve main body and emphasis that high water cut oil field water flooding effectiveness is oil field development work.The original anisotropism of high water-cut reservoir is tight
Weight, the macropore that long-term current scour is gradually formed in addition, cause injection water along macropore or high permeable strip carry out it is poorly efficient or
Inefficient cycle, has a strong impact on water flooding effectiveness and oil field development overall efficiency.Each elephant the eighties of China propose note
Well adjusts intake profile to improve the fresh target of a well group or the overall floood conformance efficiency of block, by for many years
Development, formed mechanically and chemically two major class water plugging and profiling technology, mainly including water shutoff in oil well, Profile Control in Injection Well technology,
Oil-water well correspondence water blockoff, profile control technique, oil field block entity water plugging profile control technique and oil reservoir deep profile controlling technology.Correspondingly develop
Nearly hundred kinds of eight major class of success, water blockoff, profile control chemical agent.In the prior art, multi-round profilecontrol, chemical profile control agent are passed through in general oil field
Consumption is increasing, and profile control cost is consequently increased.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of transfer drive side for improving oil recovery rate
Method.
The technical scheme is that：A kind of transfer drive method for improving oil recovery rate, comprises the following steps：
（1）, using water-tank lorry transport discarded slurry to well site mud stirring tank, discarded slurry proportion is diluted to clear water
1.03-1.05；While dilution in discarded slurry add concentration be 0.1% mud dispersant and mud suspending agent after mix
Close；
（2）, with pump skid mixed discarded slurry injected by target zone by former water injection string, keep 24 hours continuous notes
Enter, injection rate is controlled in 40~60 m3/d；
（3）, when mud inject complete or pressure reach threshold pressure when, stop injection, into stratum inject proportion be 1.2-1.3
Coal ash pulp sealing, mud squeezed into stratum Hou Guan by the clear water that injection completes to be injected more than hole volume amount in backward pit shaft
Well；
（4）, recover normal water filling after closing well 24h.
Further technical scheme, step（3）In coal ash pulp by mass ratio be 1:2:7 bentonite, cement, fine coal
Ash, which adds water, to be formulated.
Beneficial effects of the present invention：
1st, after the present invention is by handling waste drilling mud, by controlling the dosage of additive, it is changed mud physical property,
With good shut-off capacity and suspension, as good inorganic particle profile control agent, it can both mitigate the processing of discarded slurry
Expense, can be used for profile control operation again, reduce profile control cost, the sweep efficiency of injection water be improved, so as to improve oil recovery rate.
2nd, the profile control agent that the present invention is made using cement mortar preferentially enters the low High Permeability Interval of flow resistance, and predetermined
Generation solid precipitation, is blocked to High Permeability Interval in time, forces injection water change flow direction and hyposmosis in entering
Interval.The part that the polymer added in mud is contacted with injection water is gradually dissolved, is swelled, and the viscosity of water is added, so as to drop
Low oil and water mobility ratio, improves area and sweeps oily efficiency, expand the radius of influence of profile control, the remnants further displaced in stratum
Oil, to reduce well water, so as to improve oil recovery factor.
Embodiment
Below by non-limiting example, the present invention is expanded on further, the present invention is understood.
Embodiment 1, a kind of transfer drive method for improving oil recovery rate, comprise the following steps：
（1）, discarded slurry transported to well site mud stirring tank using water-tank lorry, with clear water by waste sludge that density is 1.2 or so
Slurry proportion is diluted to 1.03-1.05 as the startup of mud and injects density；Addition concentration is equal in discarded slurry while dilution
Mixed after mud dispersant and mud suspending agent for 0.1%；Now, the suspension and stability of mud are preferable, stand 24 small
Shi Hou, the viscosity of mud rises less, and solid content loss is small（Wherein, the medicament that dispatches from the factory of mud dispersant is entitled：Yangzhou profit reaches
Oilfield Chemicals Co., Ltd sludge dispersant A, numbering KD-75A.The medicament that dispatches from the factory of mud stability is entitled：Yangzhou profit reaches
Oilfield Chemicals Co., Ltd sludge dispersant B, numbering KD-75B）；
（2）, with pump skid mixed discarded slurry injected by target zone by former water injection string, keep 24 hours continuous notes
Enter, injection rate is controlled in 40~60 m3/d；
（3）, injection when pressure can be actually implanted into according to scene adjusts injection rate and injection rate in good time, when mud inject complete or
When pressure reaches threshold pressure, stop injection, sealing mud balance need to be higher than transfer drive mud, therefore injection proportion is into stratum
1.2 coal ash pulp sealing, injection completes the enough clear water of injection in backward pit shaft and mud is squeezed into closing well behind stratum；
Specifically formula and its mass ratio are coal ash pulp：Bentonite：Cement：Flyash=1:2:7, it our experiments show that, three kinds
Medicament is configured to proportion 1.2-1.3 coal ash pulp after being well mixed under such a ratio, stand without solidification sign after 220min,
Construction risk is relatively low；
（4）, recover normal water filling after closing well 24h.
Water injection pressure is significantly raised, and profile control effect is notable.
Embodiment 2, a kind of transfer drive method for improving oil recovery rate, step and parameter reference embodiment 1, wherein, day notes
Water 80m3, injection pressure is 7.5MPa, amounts to injection waste drilling mud 1252m3 by former well water injection string, is then injected into
The coal ash pulp 698m3 sealings of proportion 1.18, recover water filling after closing well 24h, and water filling discharge capacity is 1.88m3/h, oil pressure 15.8MPa,
Reach profile control effect.
Experimental result：Water injection pressure is significantly raised, then effectively, the profile control technology that construction is used both had met environmental protection will for profile control
Ask, economic value routine blocking agent 570-600 members/m3,62.5 yuan/m3 of this blocking agent is embodied again, add up to save 1,140,000, push away
Wide value is high.
In summary, recycled by well drilling waste mud recycling and carry out Profile Control in Injection Well concept feasible, and greatly
Reduce profile control cost, reduction well drilling waste mud processing cost and environmental pollution hidden danger.
Claims (2)
1. a kind of transfer drive method for improving oil recovery rate, it is characterised in that comprise the following steps：
（1）Discarded slurry is transported to well site mud stirring tank using water-tank lorry, discarded slurry proportion is diluted to 1.03- with clear water
1.05；While dilution in discarded slurry add concentration be 0.1% mud dispersant and mud suspending agent after mix；
（2）Mixed discarded slurry is injected by target zone by former water injection string with pump skid, holding is continuously injected into for 24 hours,
Injection rate is controlled in 40~60 m3/d；
（3）When mud injects completion or pressure reaches threshold pressure, stop injection, it is 1.2-1.3 that proportion is injected into stratum
Coal ash pulp sealing, mud squeezed into stratum Hou Guan by the clear water that injection completes to be injected more than hole volume amount in backward pit shaft
Well；
（4）Recover normal water filling after closing well 24h.
2. a kind of transfer drive method for improving oil recovery rate according to claim 1, it is characterised in that step（3）In
Coal ash pulp is 1 by mass ratio:2:7 bentonite, cement, flyash add water and are formulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783892.0A CN107313758A (en) | 2017-09-04 | 2017-09-04 | A kind of transfer drive method for improving oil recovery rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783892.0A CN107313758A (en) | 2017-09-04 | 2017-09-04 | A kind of transfer drive method for improving oil recovery rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107313758A true CN107313758A (en) | 2017-11-03 |
Family
ID=60176693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710783892.0A Pending CN107313758A (en) | 2017-09-04 | 2017-09-04 | A kind of transfer drive method for improving oil recovery rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107313758A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794016A (en) * | 2017-11-09 | 2018-03-13 | 中国石油化工股份有限公司 | A kind of rejected well drilling liquid harmless treatment process and device |
| CN107858142A (en) * | 2017-11-22 | 2018-03-30 | 烟台智本知识产权运营管理有限公司 | A kind of coal-fired waste residue profile control agent and preparation method thereof |
| CN112625665A (en) * | 2019-10-08 | 2021-04-09 | 中国石油化工股份有限公司 | Fly ash suspension stable plugging profile control agent and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016452A (en) * | 2007-02-28 | 2007-08-15 | 中国石化股份胜利油田分公司孤岛采油厂 | Preparation of composite cation blocking agent and use method of blocking and polymerizing |
| CN101735782A (en) * | 2009-12-15 | 2010-06-16 | 中国科学院长春应用化学研究所 | Method for preparing profile adjusting and water plugging agent from slurry obtained after treatment on waste water of oil fields |
| US20140262269A1 (en) * | 2013-03-13 | 2014-09-18 | Superior Energy Services, L.L.C. | Method to repair leaks in a cemented annulus |
| CN104153731A (en) * | 2014-07-11 | 2014-11-19 | 东营市华翰石油技术开发有限公司 | Waste drilling mud recycling water shut-off and profile control technique |
| CN105086967A (en) * | 2015-05-22 | 2015-11-25 | 中国石油天然气股份有限公司 | Channeling preventing and plugging agent and construction method for controlling plugging and sealing channeling by utilizing channeling preventing and plugging agent |
| CN105331343A (en) * | 2015-11-19 | 2016-02-17 | 里群 | Non-resin type profile control agent and application thereof in oil exploitation |
| CN205477516U (en) * | 2015-11-02 | 2016-08-17 | 中庆能源工程技术有限公司 | Oil field profile control is transferred and is driven blockage system |
-
2017
- 2017-09-04 CN CN201710783892.0A patent/CN107313758A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016452A (en) * | 2007-02-28 | 2007-08-15 | 中国石化股份胜利油田分公司孤岛采油厂 | Preparation of composite cation blocking agent and use method of blocking and polymerizing |
| CN101735782A (en) * | 2009-12-15 | 2010-06-16 | 中国科学院长春应用化学研究所 | Method for preparing profile adjusting and water plugging agent from slurry obtained after treatment on waste water of oil fields |
| US20140262269A1 (en) * | 2013-03-13 | 2014-09-18 | Superior Energy Services, L.L.C. | Method to repair leaks in a cemented annulus |
| CN104153731A (en) * | 2014-07-11 | 2014-11-19 | 东营市华翰石油技术开发有限公司 | Waste drilling mud recycling water shut-off and profile control technique |
| CN105086967A (en) * | 2015-05-22 | 2015-11-25 | 中国石油天然气股份有限公司 | Channeling preventing and plugging agent and construction method for controlling plugging and sealing channeling by utilizing channeling preventing and plugging agent |
| CN205477516U (en) * | 2015-11-02 | 2016-08-17 | 中庆能源工程技术有限公司 | Oil field profile control is transferred and is driven blockage system |
| CN105331343A (en) * | 2015-11-19 | 2016-02-17 | 里群 | Non-resin type profile control agent and application thereof in oil exploitation |
Non-Patent Citations (1)
| Title |
|---|
| 曹亚明: "废弃钻井泥浆调剖技术在高浅北区的应用研究", 《石油天然气学报（江汉石油学院学报）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794016A (en) * | 2017-11-09 | 2018-03-13 | 中国石油化工股份有限公司 | A kind of rejected well drilling liquid harmless treatment process and device |
| CN107858142A (en) * | 2017-11-22 | 2018-03-30 | 烟台智本知识产权运营管理有限公司 | A kind of coal-fired waste residue profile control agent and preparation method thereof |
| CN112625665A (en) * | 2019-10-08 | 2021-04-09 | 中国石油化工股份有限公司 | Fly ash suspension stable plugging profile control agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Vargo et al. | Alkaline-surfactant-polymer flooding of the Cambridge Minnelusa field | |
| Thomas | Polymer flooding | |
| CN104153731B (en) | A kind of well drilling waste mud reuse water plugging and profile controlling process | |
| CN103725277A (en) | Fibre compound temporary plugging agent | |
| US20200114404A1 (en) | Specialized lined landfill system for the stabilization and containment of drilling wastes and coal combustion residues | |
| CN102828734A (en) | Offshore oilfield water injection well online one-step-process acidification technology | |
| CN107575183B (en) | Process is made in a kind of tune-uncoupling for water injection well | |
| CN105505360A (en) | Fluoroboric acid blocking remover and acidification de-blocking method | |
| CN107313758A (en) | A kind of transfer drive method for improving oil recovery rate | |
| CN103321606A (en) | Low-permeability fractured reservoir oil well water-plugging and screening method | |
| CN1651545A (en) | Method of raising oil deposil erude petroleum recovery ratio | |
| CN103694976A (en) | Fiber temporary plugging agent for acidizing and fracturing | |
| CN104640956A (en) | Method for dissolving deposits containing alkaline earth metal sulphates | |
| CN104232041B (en) | A kind of oil-water well strong corrosion acidifying unblocking liquid of low leak-off and preparation method thereof | |
| CN103821486B (en) | A kind of new chemical is handled up method for increasing | |
| CN103758111A (en) | Fully-sealed underground raw water continuous pumping and injecting system | |
| CN103184037A (en) | Bio-enzyme solid-free completion fluid | |
| CN114054485A (en) | Multi-circle injection pumping-increasing repair method | |
| CN104481478B (en) | Gather the method altered and its inorganic agent used in macropore plugging on polymer flooding correspondence oil well | |
| CN110397420A (en) | One kind being suitable for old casing eyelet method for blocking | |
| CN103497748B (en) | A kind ofly the envelope of stratum residual polymer is utilized to alter agent and envelope alters method | |
| CN205477516U (en) | Oil field profile control is transferred and is driven blockage system | |
| CN104499990B (en) | Prevention or the poly- method altered of prevention and inorganic agent used on polymer flooding correspondence oil well | |
| CN205025423U (en) | Horizontal well water blocking process tubular column | |
| RU2771651C1 (en) | Discharge of liquids at low temperatures in completion operations using a natural mineral compound |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171103 |