CN102942907A - Novel profile control rapid degradation liquid - Google Patents
Novel profile control rapid degradation liquid Download PDFInfo
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- CN102942907A CN102942907A CN2012104797131A CN201210479713A CN102942907A CN 102942907 A CN102942907 A CN 102942907A CN 2012104797131 A CN2012104797131 A CN 2012104797131A CN 201210479713 A CN201210479713 A CN 201210479713A CN 102942907 A CN102942907 A CN 102942907A
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- profile control
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- novel profile
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Abstract
The invention belongs to a fine chemical liquid, and relates to a novel profile control rapid degradation liquid which is used for profile control liquid chain scission rapid degradation and improves crude oil recovery. The formula is that the novel profile control rapid degradation liquid comprises, by weight, 7% to 9% of cleanup additives, 8% to 10% of hydrochloric acids, 5% to 7% of hydrochloric acid inhibiters, 4% to 6% of anti-swelling agents, 3% to 5% of ferric ion stabilizers, and the balance water. Compared with the current chemical blockage removing technologies such as common acidizing technology and the like, the rapid degradation liquid not only can improve the rapid degradation effect, is long in smoothness maintaining time, and improves the crude oil recovery, but also is a brand novel safe and environment-friendly product with the pH being 7, and the product does not have pungent odors and corrosion and damage strata.
Description
Technical field
The invention belongs to fine chemicals liquid processed, particularly for the speed solution of oil field profile control shutoff, open the oily discharge orifice road of newborn little oil band, improve a kind of novel profile control speed of oil recovery factor and separate liquid.
Background technology
The oil field is in the Development and Production process, and every technological processs such as drilling well, oil-gas mining have all adopted a large amount of chemical, mainly contains mineral substance, natural materials, organism, inorganics, macromolecular material etc.Along with the injection of chemical, continuous mobile the change and the performance history many factors of oil reservoir band, cause profile control plugged zone position to restrict the outflow duct of crude oil.Because down-hole formation has a large amount of little oil bands constantly to produce, and original oily discharge orifice road and infiltration condition have all been sealed, cause constantly newly-increased little oily band to be exploited, in order effectively to utilize subterranean resource, usually the profile control shutoff solids of profile control interval needs effectively to decompose to remove, thorough unobstructed oily discharge orifice road is effectively exploited after making the infiltration of newborn little oil band gather oily discharge orifice road, thereby improves the output of oil and gas.
Generally, the oil field is along with the continuous increase of profile control solution accumulative total injection rate, the continuous change in stratal configuration duct, profile control is to the continuous shutoff of macropore and most permeable zone, make dispersion little oil band do not have flow pass, had a strong impact on the oil recovery development effectiveness.In recent years for addressing the above problem, common pressure break and acidifying profile control de-plugging measure have been promoted at the scene, though alleviate to a certain extent the contradiction that the oil-displacing agent notes are not entered and injection pressure rises, but still exist degradation effect not obvious, efficient low, the corrosion contamination degree is day by day serious, the stratum original structure has been caused the grievous hurt problem that can't remedy.
Summary of the invention
Technical problem to be solved by this invention, for the deficiency in the chemical degradation technology such as existing common Acidizing Technology, provide a kind of novel profile control speed to separate liquid, it can not only Effective Raise profile control speed separate effect, keeps the unimpeded time long, improves oil recovery factor, and be that pH value is 7, non-stimulated smell without corrosion, does not produce the novel environment friendly product of injury to the stratum.
To achieve these goals, the present invention adopts following technical scheme:
A kind of novel profile control speed is separated liquid, is comprised of the component of following weight percent: cleanup additive 7%--9%, hydrochloric acid 8%--10%, and salt acid inhibitor 5%--7%, expansion-resisting agent 4%--6%, Fe stabilizer 3%--5%, all the other are water.
A kind of novel profile control speed solution liquid mechanism of the present invention is as follows:
It is the cleanup additive that is thoroughly returned row function by the remaining tamper in the help low permeability pay, in the deep-well that novel profile control speed is separated liquid, produce chemical reaction with the shutoff product, get through the hydrochloric acid that stops up interval, slowing down hydrochloric acid makes corrosion rate greatly reduce the salt acid inhibitor of function to the burn into of metallic matrix, reduce material surface tension force and suppress particle migration, prevent the expansion-resisting agent of clay, mineral substance water-swellable function, the free iron ion of complexing effectively, prevent the Fe stabilizer of ferric hydroxide precipitate injury ground layer function, the Multiple components such as water form.It all has solution to the residual solid thing that various inorganic tampers (mud, sand, clay) reach, row is returned in the profile control shutoff and admittedly melts ability, the chemical conversion reaction occurs in the multiple complicated solid etc. of stopping up that causes with profile control solution in the stratum, instant solution profile control interval tamper solid, make profile control tamper Degradation and Transformation become tiny powder agglomates shape, thoroughly break away from and rock surface cementation state.Make tamper be dissolved into gradually the little thick shape flowable solution of fine powder through continual reaction in 24 hours, be easy to anti-row.Thereby got through little oil reservoir area oil discharge orifice road, better speed is separated to reach, augmented injection increases and adopts effect.Novel profile control speed of the present invention separates liquid and the anti-thing of arranging of profile control solid is separated molten test repeatedly, speed is separated the chemical degradation reaction is occured rapidly when liquid enters stratum contact plug, change the existence form of profile control solid, improve water phase permeability, reduce the cementation of removing the profile control solid, thereby until dissolve the resistance to flow that the solid bodies that produces obstruction is subdued little oil band fully.Play the logical effect of adopting that hinders, easily annotates, increases.
A kind of novel profile control speed of the present invention is separated liquid proves that through simulation test fast solution rate reaches 99.8%, increases with other degraded and adopts product to compare effect remarkable, is superior to profile control speed in the past and separates the superior point of product and have;
1) not only can carry out degradable melting to the profile control solid body, and thorough noresidue is melted in degraded.
2) untie and keep after the shutoff the unimpeded time long, thoroughly do not produce again deposition obstruction after the de-plugging.
3) degraded of adaptation level section homogeneous blocks piece stripping type, thorough anti-row can not cause formation damage after the reaction.
4) can accurately control the unblocking agent consumption, noresidue can the polluted underground water resource after the assurance de-plugging.
5) use easy and simple to handle, environmental protection, energy-conservation, safe, this degradation solution pH value to be 7, tasteless, without corrosion, incarnadine shape liquid solves soon the easily row of returning, for oil recovery repeatedly creates good conditions.
For this novel profile control speed of verifying is separated the liquid result of use, adsorb again and the problem such as obstruction again according to the deposition of residual object after the composition analysis of profile control area tamper and the profile control degraded, we have carried out repeatedly research trial, and table 1 is the experiment situation of simulated field:
The trial sheet of table 1 simulated field
In the table 1: experiment I adopts profile control liquid for plugging 50% concentration solids; Experiment II adopts profile control liquid for plugging 70% concentration solids; Experiment III adopts profile control liquid for plugging 90% concentration solids: all reached identical degradation effect after the test.
The repeatedly simulation test that reached 3 years through the contriver, the novel profile control speed of research is separated liquid formula and both can effectively be dissolved profile control shutoff solids, can dissolve fully organic matter, clay and mechanical impurity again, simulation test proves, this degradation technique strong adaptability, success ratio is high, is that a kind of effective novel profile control speed is separated new technology, also is the substitute products that surmount in the past acidifying and the logical resistance of various chemical products degraded.
A kind of novel profile control speed solution liquid of the present invention dilutes to stir at normal temperatures sent into shaft bottom appointment zone of interest with the high pressure pump truck of being furnished with the high-low pressure splash head in 12 hours, be frozen into wall shutoff zone of interest under On Fluctuations in 24 hours.Usage ratio is 2:1, such as available 2 tons of blockages relieving fluids 1 ton of profile control solution solids that goes to degrade, can reach the degraded purpose in 24 hours, and crude oil is exploited smoothly through oily discharge orifice road, and the Effective Raise oil recovery factor really reaches step-down and increases the purpose of adopting.
Embodiment
The present invention will be further described with the implementation case for the below:
Embodiment 1: the well stimulation liquid formula of employing is as follows:
Component by following weight percent forms: cleanup additive 8.5%, hydrochloric acid 10%, salt acid inhibitor 7%, expansion-resisting agent 6%, Fe stabilizer 5%, tensio-active agent 6%, water 57.5%.
Stir and to use after the medicament of above-mentioned each component and water are miscible at normal temperatures.
The present case prescription result of use in oil and water well, with reference to following table 2:
The result of use of table 2. embodiment 1:
From above several examples as seen, before and after degraded, its pressure, water yield index have fairly obvious difference, prove that this prescription has good speed solution effect.
Embodiment 1: it is as follows that the profile control of employing speed is separated liquid formula: the component by following weight percent forms: cleanup additive: 7%--9%, hydrochloric acid: 8%--10%: salt acid inhibitor 5%--7%: expansion-resisting agent 4%--6%, Fe stabilizer: 3%--5%, tensio-active agent 4%--6%, all the other are water.Stir and to use after the medicament of above-mentioned each component and water are miscible at normal temperatures.Learn through expert lab analysis and actual tests result for many years, this profile control speed is separated liquid, and not only the save energy use is easy and simple to handle, and fast solution melts thorough noresidue and keep the unimpeded time long, improves especially the safe environment protection type product innovation of oil recovery factor.
Claims (1)
1. a novel profile control speed is separated liquid, it is characterized in that the component by following weight percent: cleanup additive 7%--9%, hydrochloric acid 8%--10%, and salt acid inhibitor 5%--7%, expansion-resisting agent 4%--6%, Fe stabilizer 3%--5%, all the other are water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104797131A CN102942907A (en) | 2012-11-23 | 2012-11-23 | Novel profile control rapid degradation liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104797131A CN102942907A (en) | 2012-11-23 | 2012-11-23 | Novel profile control rapid degradation liquid |
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| CN102942907A true CN102942907A (en) | 2013-02-27 |
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| CN2012104797131A Pending CN102942907A (en) | 2012-11-23 | 2012-11-23 | Novel profile control rapid degradation liquid |
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Citations (9)
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|---|---|---|---|---|
| US6140277A (en) * | 1998-12-31 | 2000-10-31 | Schlumberger Technology Corporation | Fluids and techniques for hydrocarbon well completion |
| EP1413710B1 (en) * | 2002-10-22 | 2007-06-27 | Halliburton Energy Services, Inc. | Introducing treating fluids into subterranean producing zones |
| CN101033685A (en) * | 2007-04-07 | 2007-09-12 | 辽河石油勘探局 | Combined removing plug by acid technology of oil well |
| CN101092559A (en) * | 2006-06-24 | 2007-12-26 | 常彦荣 | Water flooding added agent in use for watering oil field, and preparation method |
| CN101161762A (en) * | 2007-11-27 | 2008-04-16 | 西安石油大学 | Acid for corroding sandstone |
| US20090114247A1 (en) * | 2007-03-06 | 2009-05-07 | James Michael Brown | Method of Treating Flow Conduits and Vessels with Foamed Composition |
| WO2009069060A1 (en) * | 2007-11-29 | 2009-06-04 | Schlumberger Canada Limited | Filtercake removal |
| CN102010700A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | High-efficiency inorganic blockage relieving agent |
| CN102010698A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | Inorganic de-blocking agent |
-
2012
- 2012-11-23 CN CN2012104797131A patent/CN102942907A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6140277A (en) * | 1998-12-31 | 2000-10-31 | Schlumberger Technology Corporation | Fluids and techniques for hydrocarbon well completion |
| EP1413710B1 (en) * | 2002-10-22 | 2007-06-27 | Halliburton Energy Services, Inc. | Introducing treating fluids into subterranean producing zones |
| CN101092559A (en) * | 2006-06-24 | 2007-12-26 | 常彦荣 | Water flooding added agent in use for watering oil field, and preparation method |
| US20090114247A1 (en) * | 2007-03-06 | 2009-05-07 | James Michael Brown | Method of Treating Flow Conduits and Vessels with Foamed Composition |
| CN101033685A (en) * | 2007-04-07 | 2007-09-12 | 辽河石油勘探局 | Combined removing plug by acid technology of oil well |
| CN101161762A (en) * | 2007-11-27 | 2008-04-16 | 西安石油大学 | Acid for corroding sandstone |
| WO2009069060A1 (en) * | 2007-11-29 | 2009-06-04 | Schlumberger Canada Limited | Filtercake removal |
| CN102010700A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | High-efficiency inorganic blockage relieving agent |
| CN102010698A (en) * | 2010-08-12 | 2011-04-13 | 天津市天诚化工有限公司 | Inorganic de-blocking agent |
Non-Patent Citations (1)
| Title |
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| 冯虎: "牛庄油田王53断块FB-6酸化解堵剂的研究", 《内蒙古石油化工》, no. 05, 28 May 2006 (2006-05-28) * |
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Application publication date: 20130227 |