CN1644647A - Preparation method of modified paraffin selective water shutoff agent - Google Patents
Preparation method of modified paraffin selective water shutoff agent Download PDFInfo
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- CN1644647A CN1644647A CN 200410010539 CN200410010539A CN1644647A CN 1644647 A CN1644647 A CN 1644647A CN 200410010539 CN200410010539 CN 200410010539 CN 200410010539 A CN200410010539 A CN 200410010539A CN 1644647 A CN1644647 A CN 1644647A
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- China
- Prior art keywords
- water
- paraffin
- parts
- oil
- emulsion
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- 239000012188 paraffin wax Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 12
- 229920001131 Pulp (paper) Polymers 0.000 claims description 9
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 7
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 7
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 7
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000005642 Oleic acid Substances 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000003208 petroleum Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 235000019628 coolness Nutrition 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 18
- 239000010779 crude oil Substances 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 239000002569 water oil cream Substances 0.000 abstract 1
- 239000002981 blocking agent Substances 0.000 description 7
- 102000010637 Aquaporins Human genes 0.000 description 2
- 108010063290 Aquaporins Proteins 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Landscapes
- Paper (AREA)
- Colloid Chemistry (AREA)
Abstract
A method for preparing a modified paraffin selective water shutoff agent comprises two processes of preparing a modified paraffin emulsion and a water shutoff agent. The phase change process of oil solubility, water solubility and oil solubility of the modified paraffin emulsion is adopted, the selectivity is objective and complete, and meanwhile, the plugging agent has fluidity at normal temperature, can be directly extruded into an oil layer by a pump truck, does not need carrying fluid, and reduces the cost; under the same action of the oil layer temperature and the demulsifier, an O/W oil-water emulsion is formed when meeting oil, and the flow resistance in the crude oil is reduced. The crystallized paraffin is emulsified and dispersed in crude oil, so that an oil layer cannot be blocked, and the property-changed paraffin entering a water channel is crystallized and aggregated into larger crystals, and the crystals are mutually bonded to block rock pores, so that the problem of water and oil blockage is fundamentally solved. The construction is simple, the operability is strong, and the requirement on the environment is simple. Can be stored for a long time, has good stability, is not influenced by temperature change, and is very suitable for field popularization and application.
Description
Technical field:
The present invention relates to the plugging agent of the raising oil well output that uses on a kind of field produces, particularly a kind of compound method of modified paraffin selective water shutoff agent.
Background technology:
In the maturing field high-water-cut oil-producing well water blockoff of exploitation middle and later periods, the oilfield chemistry water blockoff from inorganic gel to the organic polymer gel, tens kinds of prescriptions, but being subjected to blocking agent self, spot effect optionally influences, success ratio is lower, in recent years in order to improve the selectivity of blocking agent self, a large amount of materials such as acrylamide monomer polymerization, interpolation clay that use are through drying, pulverize, utilize its water-swellable, chance oil is gone back the expansible characteristic and is carried out water blockoff, obtains certain spot effect, but the weak point of this agent is to enter the solid particulate of oil-yielding stratum hole, can cause permanent plugging to oil reservoir, in addition, the solid particulate blocking agent is in construction process, requirement to transport fluid is higher, needs diesel oil or high density Cacl usually
2The aqueous solution has improved production cost.
Technical scheme
The object of the present invention is to provide a kind of compound method of modified paraffin selective water shutoff agent, have flowability under this blocking agent normal temperature, do not need transport fluid, reduced cost; Can oil layer blocking not entered aquaporin blowhole is played ponding, fundamentally solve the not stifled oil of water blockoff.
The object of the present invention is achieved like this,
(1) preparation of modified paraffin emulsion
1) weighs 100 parts in paraffin, 0～10 part of oleic acid, 0～10 part of stearic acid, 400 parts in water, 2.5 parts of ammoniacal liquor;
2) paraffin and oleic acid, stearic acid are melted together, and be heated to 90～100 ℃.
3) get 50～100 parts of water and join in the emulsification pot, under vigorous stirring, add 2 slowly) paraffin of preparation and the mixture of two kinds of alcohol, be heated to 70～80 ℃ after, dropping ammonia, and then remaining water added;
4) amount of water is 1/5～1/6 of a paraffin amount for the first time, adds to stir;
5) add 1/3～1/4 of paraffin amount for the second time again, stir, material is divided to add remaining water for several times by thick thinning more successively at this moment, makes emulsified olefin be diluted to 10%～20% solution,
6) whole water are all to be to add after being heated to 60～80 ℃, and it is standby to make 40 ℃ of emulsion coolings;
(2) plugging agent preparation
1) get 100 parts of (1) middle synthetic modified paraffin emulsions, 0.5 part of petroleum resin, 1 part of paper pulp, water is an amount of;
2) with nozzle with petroleum resin, paper pulp is injected in the modified paraffin emulsion, the slurry like material that forms through making beating after the paper pulp of note using will be pulverized earlier stirs, and adds an amount of Al (OH)
3Colloid notes observing the variation of pH value, when pH value is 7, stops to add, and blocking agent is just prepared and finished like this.
The present invention is by oily molten, water-soluble, the oily molten phase transition process of modified paraffin emulsion, and objective selectivity completely has flowability under this blocking agent normal temperature simultaneously, and the direct squeeze note of available pump truck is gone into oil reservoir, does not need transport fluid.Under workman's same-action of reservoir temperature and emulsion splitter, meet oil and form the O/W oil hydrosol, reduce resistance to flow in the crude oil.The paraffin that crystallization goes out is emulsified to be dispersed in the crude oil, can be to oil layer blocking, and the bamboo wax crystal that changes that enters aquaporin is gathered into bigger xln, and bonding plays ponding to blowhole mutually, fundamentally solves the not stifled oil of water blockoff.Construction is simple, and is workable, simple to environmental requirement.Can chronicity store, good stability is not subjected to influence of temperature change.Be well suited for field popularization application.
Embodiment
Suitable oil temperature is the compound method of the modified paraffin selective water shutoff agent about 50 ℃:
(1) preparation of modified paraffin emulsion
1) weighs 100 parts in paraffin, 5 parts of oleic acid, 5 parts of stearic acid, 400 parts in water, 2.5 parts of ammoniacal liquor;
2) paraffin and oleic acid, stearic acid are melted together, and be heated to 90～100 ℃.
3) get 50～100 parts of water and join in the emulsification pot, under vigorous stirring, add 2 slowly) paraffin of preparation and the mixture of two kinds of alcohol, be heated to 70～80 ℃ after, dropping ammonia, and then remaining water added;
4) amount of water is 1/5～1/6 of a paraffin amount for the first time, adds to stir;
5) add 1/3～1/4 of paraffin amount for the second time again, stir, material is divided to add remaining water for several times by thick thinning more successively at this moment, makes emulsified olefin be diluted to 10%～20% solution,
6) whole water are all to be to add after being heated to 60～80 ℃, and it is standby to make 40 ℃ of emulsion coolings;
(2) plugging agent preparation
1) get 100 parts of (1) middle synthetic modified paraffin emulsions, 0.5 part of petroleum resin, 1 part of paper pulp, water is an amount of;
2) with nozzle with petroleum resin, paper pulp is injected in the modified paraffin emulsion, the slurry like material that forms through making beating after the paper pulp of note using will be pulverized earlier stirs, and adds an amount of Al (OH)
3Colloid notes observing the variation of pH value, when pH value is 7, stops to add, and blocking agent is just prepared and finished like this.
Claims (2)
1, a kind of compound method of modified paraffin selective water shutoff agent is characterized in that:
(1) preparation of modified paraffin emulsion
1) weighs 100 parts in paraffin, 0～10 part of oleic acid, 0～10 part of stearic acid, 400 parts in water, 2.5 parts of ammoniacal liquor;
2) paraffin and oleic acid, stearic acid are melted together, and be heated to 90～100 ℃.
3) get 50～100 parts of water and join in the emulsification pot, under vigorous stirring, add 2 slowly) paraffin of preparation and the mixture of two kinds of alcohol, be heated to 70～80 ℃ after, dropping ammonia, and then remaining water added;
4) amount of water is 1/5～1/6 of a paraffin amount for the first time, adds to stir;
5) add 1/3～1/4 of paraffin amount for the second time again, stir, material is divided to add remaining water for several times by thick thinning more successively at this moment, makes emulsified olefin be diluted to 10%～20% solution,
6) whole water are all to be to add after being heated to 60～80 ℃, and it is standby to make 40 ℃ of emulsion coolings;
(2) plugging agent preparation
1) get 100 parts of (1) middle synthetic modified paraffin emulsions, 0.5 part of petroleum resin, 1 part of paper pulp, water is an amount of;
2) with nozzle with petroleum resin, paper pulp is injected in the modified paraffin emulsion, the slurry like material that forms through making beating after the paper pulp of note using will be pulverized earlier stirs, and adds an amount of Al (OH)
3Colloid notes observing the variation of pH value, when pH value is 7, stops to add getting final product.
2, the compound method of a kind of modified paraffin selective water shutoff agent according to claim 1 is characterized in that: in the preparation of (1) modified paraffin emulsion, weigh 100 parts in paraffin, 5 parts of oleic acid, 5 parts of stearic acid, 400 parts in water, 2.5 parts of ammoniacal liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010539 CN1644647A (en) | 2004-12-28 | 2004-12-28 | Preparation method of modified paraffin selective water shutoff agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010539 CN1644647A (en) | 2004-12-28 | 2004-12-28 | Preparation method of modified paraffin selective water shutoff agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1644647A true CN1644647A (en) | 2005-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410010539 Pending CN1644647A (en) | 2004-12-28 | 2004-12-28 | Preparation method of modified paraffin selective water shutoff agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1644647A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108985B (en) * | 2007-08-16 | 2010-05-19 | 华东理工大学 | Paraffin wax emulsions modified with petroleum resin and method of manufacturing the same |
| CN103146000A (en) * | 2013-02-27 | 2013-06-12 | 云南玉加宝人造板有限公司 | Emulsified paraffin and preparation method thereof |
| CN107459983A (en) * | 2017-08-16 | 2017-12-12 | 中国石油化工股份有限公司 | Stream particle and preparation method thereof is adjusted in temperature-resistant anti-salt filling |
-
2004
- 2004-12-28 CN CN 200410010539 patent/CN1644647A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108985B (en) * | 2007-08-16 | 2010-05-19 | 华东理工大学 | Paraffin wax emulsions modified with petroleum resin and method of manufacturing the same |
| CN103146000A (en) * | 2013-02-27 | 2013-06-12 | 云南玉加宝人造板有限公司 | Emulsified paraffin and preparation method thereof |
| CN103146000B (en) * | 2013-02-27 | 2014-08-13 | 云南玉加宝人造板有限公司 | Emulsified paraffin and preparation method thereof |
| CN107459983A (en) * | 2017-08-16 | 2017-12-12 | 中国石油化工股份有限公司 | Stream particle and preparation method thereof is adjusted in temperature-resistant anti-salt filling |
| CN107459983B (en) * | 2017-08-16 | 2019-12-03 | 中国石油化工股份有限公司 | Stream particle and preparation method thereof is adjusted in temperature-resistant anti-salt filling |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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