CN104140490B - Polymer inhibitor for clay phase-free drilling fluid and preparation method thereof - Google Patents
Polymer inhibitor for clay phase-free drilling fluid and preparation method thereof Download PDFInfo
- Publication number
- CN104140490B CN104140490B CN201310517150.5A CN201310517150A CN104140490B CN 104140490 B CN104140490 B CN 104140490B CN 201310517150 A CN201310517150 A CN 201310517150A CN 104140490 B CN104140490 B CN 104140490B
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- monomer
- clay phase
- polymer
- inhibitor
- 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
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Belonging to the technical field of preparation methods for petroleum drilling oilfield chemistry macromolecular polymers, the invention discloses a polymer inhibitor for clay phase-free drilling fluid and a preparation method thereof. The polymer inhibitor is formed by copolymerization of an organic amide monomer A, an amido hydrolysis inhibiting monomer B and a cationic monomer C according to a mass percentage of (56-76):(10-25):(14-19) under the action of an initiator and a pH value regulator. The intrinsic viscosity number of the polymer inhibitor is 2.0-3.0dl/g. The shale with a clear water recovery rate of 3.6% is employed to perform shale recovery experiment on the obtained product. A 0.5% aqueous solution of the polymer inhibitor can reach a primary shale recovery rate of higher than 90% after 16h at 200DEG C and a relative shale recovery rate of higher than 98%, and a contrast example, i.e. a 2% high temperature resistant polyamine inhibitor solution only has a primary shale recovery rate of 64.2% after 16h at 200DEG C. With good sloughing inhibiting and preventing ability under high temperature conditions, the polymer inhibitor provided by the invention can be used for weak gel clay phase-free drilling fluid to effectively inhibit hydration expansion of mud shale and ensure safe and fast drilling of a special process well, thus further improving the wellbore wall stabilization capacity.
Description
Technical field：
The present invention relates to one kind is without clay phase polymer for drilling fluid inhibitor and preparation method thereof, category oil drilling oil field
Chemical high molecular polymer preparation method technical field.
Technical background：
As petroleum exploration and development develops to deep, deep-well and special well are more and more, and drilling liquid technology is proposed
Higher requirement, without clay phase drilling fluid with good inhibition, preferable shear thinning behavior and stronger reservoir protection energy
Power is increasingly subject to people's attention, and is that safely and fast drilling well, reservoir protection have for the special wells such as slim hole well, horizontal well
Effect technical measures.At present without selecting organic salt clay phase drilling fluid more（Sodium formate, potassium formate）, inorganic salt（Potassium chloride）And it is poly-
Alcohol, polyamine etc. are closed as inhibitor.Patent CN102888213A discloses one kind without clay phase drilling fluid, and its inhibitor is polymerization
Alcohol and polyamine, by the amidine functional group in the haze characteristics and polyamine inhibitor molecule of polymeric alcohol rejection is played.Patent
High temperature resistance is disclosed in CN102127402A, without clay phase low permeability reservoir drilling fluid, inhibitor selects sodium formate and KCl, its suppression
Make of being realized by the chemical action of cation compression clay particle surface electric double layer, improving consumption can improve drilling fluid
Inhibitory action, but consumption is too high affects drilling fluid rheology and wave making machine.Additionally, also polymerization species inhibitor consumption is relative
It is less, predominantly conventional water-base drilling fluid apparatus cationic polymer anti-sloughing agent etc., temperature resistance ability is up to 150 DEG C.Therefore,
For developing a kind of high temperature resistance highly cationic polymer inhibitor without clay phase drilling fluid, strong retraction, high temperature are met intricately
Layer wellbore stability demand.
The content of the invention：
It is an object of the invention to solve it is existing without clay phase drilling fluid inhibitor caving control ability, temperature resistance ability not
Sufficient the problems such as and provide a kind of 200 DEG C of temperature resistance without clay phase polymer for drilling fluid inhibitor, while provide this drilling well
The preparation method of liquid polymer inhibitor.
The present invention is adopted the following technical scheme that：
It is a kind of without clay phase polymer for drilling fluid inhibitor, by organic amide class monomer, suppress amide groups hydrolysis monomer,
Cationic monomer, in the presence of pH adjusting agent and initiator copolymerization form.Its intrinsic viscosity is 2.0~3.0dl/g.Its structure
Formula is：
In formula：R1=H、CH3Or CH2CH3；R2=CH3Or CH2CH3；R=CONHC（CH3）2CH2SO3H or C4H6NO；k：m：n=（1
~1.2）：（0.14~0.28）：（0.07~0.14）
The preparation method without clay phase polymer for drilling fluid inhibitor, comprises the following steps：
By organic amide class monomer A, suppress amide groups hydrolysis monomer B, cationic monomer C according to（56~76）：（10~
25）：（14~19）Mass percent, adjust pH value to 9.0~11.0, initiator is slowly added in the case where being stirred continuously, cause
At 20 DEG C~60 DEG C, response time 0.5h~2h obtains gelatinous polymer to temperature, and product is clipped, pelletize, in 60 DEG C~80 DEG C
Lower drying, crushing, obtain product of the present invention.
Above-mentioned organic amide class monomer A be acrylamide, N,N-DMAA, N, in N- acrylamides
One or two.
Above-mentioned suppression amide groups hydrolysis monomer B is NVP, 2- acrylamido -2- methyl-prop sulphurs
One kind in acid.
Above-mentioned cationic monomer C is dimethyl diallyl ammonium chloride or the one kind in diethyl diallyl ammonium chloride.
The initiator is oxidation-reduction initiator, and oxidant is one kind of potassium peroxydisulfate or Ammonium persulfate., and reducing agent is
Sodium sulfite.
The invention has the beneficial effects as follows：Contain strong adsorption group and rigid unitary etc. in molecular structure, with existing inhibitor
Compare, temperature resistance ability is improved, caving control performance is strong, and with stronger absorption property；The water of mud shale can effectively be suppressed
Change expansion, improve caving control ability, meet the needs of the special wells such as slim hole well, horizontal well safely and fast drilling well.
Specific embodiment：
One kind suppresses amide groups hydrolysis monomer to be N- vinyl -2- pyrroles without clay phase polymer for drilling fluid inhibitor
During alkanone, the polymer for drilling fluid inhibitor structure formula of formation is：
When suppression amide groups hydrolysis monomer is 2- acrylamide-2-methylpro panesulfonic acids, the polymer for drilling fluid of formation
Inhibitor structure formula is：
Formula（1）Formula,（2）In：R1=H、CH3Or CH2CH3；R2=CH3Or CH2CH3；k：m：n=（1~1.2）：（0.14~
0.28）：（0.07~0.14）.
Preparation example 1
36g acrylamides, 20g N, N- DMAAs, 25gN- vinyl -2- pyrrolidines are added in 100g water
Ketone, 19g dimethyl diallyl ammonium chlorides adjust pH value to 9 after fully dissolving, be separately added into 0.2g Ammonium persulfate .s and 0.2g is sub-
Sodium bisulfate, response time 0.5h~1h at 30 DEG C, obtains gelatinous polymer, and product is clipped, pelletize, dries at 60 DEG C
Dry, crushing, obtains without clay phase polymer for drilling fluid inhibitor.
Preparation example 2
60g acrylamides, 16g N, N- DMAAs, 14g2- acrylamido -2- methyl are added in 100g water
Propane sulfonic acid, 10g dimethyl diallyl ammonium chlorides fully dissolve after adjust pH value to 10, be separately added into 0.15g Ammonium persulfate .s and
0.15g sodium sulfitees, response time 0.5h~1h at 30 DEG C, obtain gelatinous polymer, and product is clipped, pelletize, in
Drying, crushing, obtain without clay phase polymer for drilling fluid inhibitor at 60 DEG C.
Preparation example 3
61g acrylamides, 5g N, N- DMAAs, 20g2- acrylamido -2- methyl are added in 120g water
Propane sulfonic acid, 14g dimethyl diallyl ammonium chlorides fully dissolve after adjust pH value to 11, be separately added into 0.1g Ammonium persulfate .s and
0.1g sodium sulfitees, response time 0.5h~1h at 30 DEG C, obtain gelatinous polymer, and product is clipped, pelletize, in 60 DEG C
Lower drying, crushing, obtain without clay phase polymer for drilling fluid inhibitor.
Preparation example 4
65g acrylamides, 8g N, N- acrylamides, 10g N- vinyl -2- pyrrolidines are added in 100g water
Ketone, 17g dimethyl diallyl ammonium chlorides adjust pH value to 10 after fully dissolving, be separately added into 0.2g Ammonium persulfate .s and 0.2g is sub-
Sodium bisulfate, response time 0.5h~1h at 30 DEG C, obtains gelatinous polymer, and product is clipped, pelletize, dries at 60 DEG C
Dry, crushing, obtains without clay phase polymer for drilling fluid inhibitor.
Comparative example
The drilling fluid preparation method of high temperature resistance polyamine inhibitor, its step：1）By 80~120 parts under room temperature（Weight portion）
The polymeric alcohol of low-molecular-weight, 20~10 parts of amination reagents and 12~20 portions of metallic catalysts are placed in reactor, lead to pressurized with hydrogen
To 2.4~2.6MPa；2）220~240 DEG C are warming up in 40~60min, are kept for 3~4h response time；3）Cooling pressure release, mistake
Filter out metallic catalyst, distillation dehydration；4）Product after dehydration is adjusted under the conditions of 1~10 DEG C with high temperature protection agent and acidity
Section agent hybrid reaction is uniform, obtains high-temperature-resistant polyamine salt inhibitor for drilling fluid.
Other embodiment is prepared according to the component that table 1 is given：
The specific embodiment component list of table 1（Unit is by percentage to the quality）
The performance indications of the embodiment of table 2
| Embodiment | Shale recovery ratio, % | With respect to shale recovery ratio, % |
| 1 | 92.0 | 100.0 |
| 2 | 90.5 | 99.0 |
| 3 | 93.0 | 98.5 |
| 4 | 95.0 | 99.5 |
| 5 | 91.8 | 99.8 |
| 6 | 92.5 | 98.0 |
| 7 | 93.0 | 99.2 |
| 8 | 92.2 | 100.0 |
| 9 | 90.0 | 100.0 |
| Comparative example | 64.2 | -- |
As shown in Table 2, products obtained therefrom rejection is good, carries out shale using the shale that the clear water response rate is 3.6% and reclaims real
Test, a shale recovery ratio is higher than 98% higher than 90%, relative shale recovery ratio after 0.5% aqueous solution, 200 DEG C/16h of the invention.
Comparative example be using the shale that the clear water response rate is 9.2%, 2.0% 200 DEG C of high-temperature-resistant polyamine salt inhibitor solution/
A shale recovery ratio is 64.2% after 16h.
Good caving control ability is shown under the high temperature conditions, can be effective without clay phase drilling fluid for Weak Gels
Suppress the hydration swelling of mud shale, it is ensured that special well safely and fast drilling well, further improve wellbore stability ability.
Claims (6)
1. one kind is characterized in that without clay phase polymer for drilling fluid inhibitor：By organic amide class monomer A, suppress amide groups
Hydrolysis monomer B, cationic monomer C are according to (56~76)：(10~25)：The mass percent of (14~19), in initiator and pH
Form in 20 DEG C~60 DEG C copolymerization in the presence of value regulator, its intrinsic viscosity is 2.0~3.0dl/g, logical containing following structure
Formula group：
In formula：R1=H, CH3Or CH2CH3；R2=CH3Or CH2CH3；R=CONHC (CH3)2CH2SO3H or C4H6NO；k：m：N=(1
~1.2)：(0.14~0.28)：(0.07~0.14).
2. one kind is characterized in that without clay phase polymer for drilling fluid inhibitor preparation method：By organic amide class monomer A, suppression
Amide groups hydrolysis monomer B processed, cationic monomer C are according to (56~76)：(10~25)：The mass percent of (14~19), is adjusted
PH value is slowly added into initiator in the case where being stirred continuously to 9.0~11.0, initiation temperature at 20 DEG C~60 DEG C, response time 0.5h
~2h, obtains gelatinous polymer, and product is clipped, pelletize, at 60 DEG C~80 DEG C drying, crush, obtain described without clay phase
Polymer for drilling fluid inhibitor.
3. according to claim 2 without clay phase polymer for drilling fluid inhibitor preparation method, it is characterized in that：It is described to have
Machine amide-type monomer A is acrylamide, N, N- DMAAs, N, one or two in N- acrylamides.
4. according to claim 2 without clay phase polymer for drilling fluid inhibitor preparation method, it is characterized in that：The suppression
Amide groups hydrolysis monomer B processed is the one kind in NVP, 2- acrylamide-2-methylpro panesulfonic acids.
5. according to claim 2 without clay phase polymer for drilling fluid inhibitor preparation method, it is characterized in that：The sun
Ion monomer C is the one kind in dimethyl diallyl ammonium chloride, diethyl diallyl ammonium chloride.
6. according to claim 2 without clay phase polymer for drilling fluid inhibitor preparation method, it is characterized in that：It is described to draw
It is oxidation-reduction initiator to send out agent, and oxidant is one kind of potassium peroxydisulfate or Ammonium persulfate., and reducing agent is sodium sulfite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310517150.5A CN104140490B (en) | 2013-10-28 | 2013-10-28 | Polymer inhibitor for clay phase-free drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310517150.5A CN104140490B (en) | 2013-10-28 | 2013-10-28 | Polymer inhibitor for clay phase-free drilling fluid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104140490A CN104140490A (en) | 2014-11-12 |
| CN104140490B true CN104140490B (en) | 2017-05-17 |
Family
ID=51849839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310517150.5A Active CN104140490B (en) | 2013-10-28 | 2013-10-28 | Polymer inhibitor for clay phase-free drilling fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104140490B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105693921A (en) * | 2016-03-10 | 2016-06-22 | 西南石油大学 | High-temperature-resistant organosilicon-amine inhibitor for water-based drilling fluid and preparation method of organosilicon-amine inhibitor |
| CN106608970B (en) * | 2016-12-21 | 2017-07-28 | 石家庄华莱鼎盛科技有限公司 | Shale-control agent for drilling fluid organosilicon polymer and preparation method thereof |
| CN109294532B (en) * | 2018-09-06 | 2021-01-29 | 中国海洋石油集团有限公司 | Environment-friendly high-performance coating inhibitor and preparation method and application thereof |
| CN110358510B (en) * | 2019-07-16 | 2021-08-17 | 荆州市众天化工有限公司 | Strong-sensitive anti-swelling inhibitor for continental facies shale and preparation method thereof |
| CN114213584B (en) * | 2021-12-24 | 2023-05-26 | 西南石油大学 | Ionic liquid polymer, preparation method and application thereof, inhibitor and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102875728A (en) * | 2012-10-30 | 2013-01-16 | 中国石油化工股份有限公司 | Zwitterionic polymer anti-collapse agent for foam drilling |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20011113A1 (en) * | 2001-05-25 | 2002-11-25 | Eni Spa | PROCEDURE FOR DECREASING THE PRODUCTION OF WATER IN OIL WELLS |
-
2013
- 2013-10-28 CN CN201310517150.5A patent/CN104140490B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102875728A (en) * | 2012-10-30 | 2013-01-16 | 中国石油化工股份有限公司 | Zwitterionic polymer anti-collapse agent for foam drilling |
Non-Patent Citations (1)
| Title |
|---|
| "AM/AMPS/DMDAAC共聚物合成及其降滤失性能研究";王春华 等;《山东化工》;20120131;第41卷(第1期);第5-7页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104140490A (en) | 2014-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104140490B (en) | Polymer inhibitor for clay phase-free drilling fluid and preparation method thereof | |
| US10968171B2 (en) | Fracturing fluid comprising a (co)polymer of a hydrated crystalline form of 2-acrylamido-2-methylpropane sulphonic acid and hydraulic fracturing method | |
| Afolabi et al. | Hydrophobically associating polymers for enhanced oil recovery–Part A: A review on the effects of some key reservoir conditions | |
| CN101824103A (en) | Polyacrylamide inorganic nano composite drilling fluid aid and preparation method thereof | |
| Jiang et al. | A double‐tailed acrylamide hydrophobically associating polymer: Synthesis, characterization, and solution properties | |
| Soliman et al. | Assessment of xanthan gum and xanthan-g-silica derivatives as chemical flooding agents and rock wettability modifiers | |
| CN107828015B (en) | Preparation method of high-temperature-resistant tackifier for drilling fluid | |
| CN113896831B (en) | Double-effect inhibitor for natural gas hydrate drilling fluid and preparation method and application thereof | |
| CN102875728B (en) | Zwitterionic polymer anti-collapse agent for foam drilling | |
| CN104418984A (en) | High-temperature resistant clay stabilizer and preparation method thereof | |
| CN107793529A (en) | A kind of high temperature resistant acid fracturing polymer and preparation method | |
| CN104388063A (en) | Micro-crosslinking polymer fluid loss additive for drilling fluid and preparation method of micro-crosslinking polymer fluid loss additive | |
| CN111718698A (en) | Hyperbranched polyetheramine environment-friendly shale inhibitor, preparation method thereof and water-based drilling fluid | |
| CN108179023A (en) | A kind of viscous crude Produced Liquid reverse-phase emulsifier and preparation method thereof | |
| CN102391849B (en) | Imidazole polymer oil displacement agent and synthesizing method thereof | |
| CN105176499A (en) | Filtrate reducer capable of resisting high temperature and high-concentration salt and preparation method thereof | |
| CN113698534A (en) | Polymer for high-performance environment-friendly borehole wall stabilizer for water-based drilling fluid | |
| CN104263329B (en) | Drilling fluid high temperature resistant salt tolerant fluid loss additive and preparation method thereof | |
| CN104357030A (en) | Branched polymer treatment agent for drilling liquid and preparation method of branched polymer treatment agent | |
| CN106046251B (en) | Water-base drilling fluid temperature resistance salt tolerant polymer filtrate reducer and preparation method thereof | |
| CN104292398A (en) | Temperature-resistant salt-resistant fluid loss additive for drilling fluid and preparation method thereof | |
| CN104140790B (en) | A kind of oil field viscosity increaser of water-soluble polymer and preparation method thereof | |
| CN105038733A (en) | High-temperature-resistant polymer tackifier for drilling fluid and preparation method for high-temperature-resistant polymer tackifier | |
| CN103666435A (en) | Reversible crosslinking low-damage fracturing fluid thickening agent and production method thereof | |
| CN103626917A (en) | Preparation method of expanded particles for plugging steam channeling during heavy oil thermal recovery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |