CN102433110A - Amine shale stabilizer for drilling fluid - Google Patents
Amine shale stabilizer for drilling fluid Download PDFInfo
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- CN102433110A CN102433110A CN2011103258026A CN201110325802A CN102433110A CN 102433110 A CN102433110 A CN 102433110A CN 2011103258026 A CN2011103258026 A CN 2011103258026A CN 201110325802 A CN201110325802 A CN 201110325802A CN 102433110 A CN102433110 A CN 102433110A
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Abstract
The invention relates to a development for an amine shale stabilizer for a drilling fluid and a preparation method for the same, which is characterized in that the amine shale stabilizer disclosed by the invention is a polymer generated by reacting polyethenoxyamine with epoxide alkane. The polyethenoxyamine is polyoxyethylene diamine or polypropylene diamine or polyoxyethylene propylene diamine, and the molecular weight thereof is less than 1000. The epoxide alkane is one or the mixture composed of two or more of ethylene oxide, propylene epoxide and butylene oxide. During a preparation process, the polyethenoxyamine and the epoxide alkane are poured in a high-temperature and high-pressure reactor according to a molar ratio of 10: 1 to 1: 20, and then reacted at 90-140 DEG C under the function of a catalyst to obtain the amine shale stabilizer for a drilling fluid. The amine shale stabilizer can efficiently prevent shale and clay from being hydrated.
Description
Technical field
The invention belongs to petroleum drilling fluid and use the shale stability agent.
Background technology
Along with the development of petroleum industry, complicated deep layer oil gas drilling faces increasing technological challenge.Drilling engineering has proposed higher, more comprehensively requirement to drilling liquid technology.Borehole well instability is an Important Project technical barrier in the drilling well.Wellbore stability is to realize prerequisite safe, quick, the high-quality drilling well, is the control drilling cost, influences one of key factor of drilling well comprehensive benefit.Keeping wellbore stability is the primary factor of drilling fluid design, and the height of the anti-collapse and ability of inhibition of drilling fluid is one of important indicator of property of drilling fluid, is focus and difficult point that domestic and international drilling fluid investigator pays close attention to.Oil base drilling fluid has advantages such as strong rejection capability, good oilness and high-temperature stability; But the environmental requirement of increasingly stringent and reason such as expensive; Limited applying of oil base and synthetic base drilling fluid, developing a kind of water-base drilling fluid with oil base drilling fluid advantage has become both domestic and external pursuing one's goal.In recent years, develop a kind of polyamine high performance water-based drilling fluid system abroad.So-called " high-performance "; Mean with the traditional water base drilling fluid and compare; It has many unique advantages can, can more fully satisfy complicated well drilling fluid anti-collapse, anti-mud drum, anti-blocked portion, help to improve drilling speed, and take into account higher composite requests such as environmental protection, oil is protected and reduce cost.High performance water-based drilling fluid is taked the basic ideas of " the overall inhibition ", mainly disperses through strengthening the aquation that suppresses shale (clay) and drilling cuttings, in conjunction with good cleaning lubrication, and then helps improving drilling speed.The high performance water-based drilling fluid system is formed and is mainly comprised polyamine potent inhibitor, strong coating agent, anti-mud drum lubricant and flow pattern regulator and fluid loss agent etc.This system has many premium propertiess of oil base invert emulsion mud, as: (1) shale stability; (2) clay and drilling cuttings inhibition; (3) improve ROP; (4) reduce bit balling; (5) reduce moment of torsion and reduce frictional resistance; (6) high-temperature stability; (7) generation of inhibition gas hydrate; (8) reduce reservoir damage.
Wherein, shale aquation potent inhibitor its essence is a kind of low molecular amine base polymer as the crucial treatment agent of high performance water-based drilling fluid system.This aminated compounds has stronger inhibition ability and anti-mud drum ability, and compliance with environmental protection requirements has received domestic and international great attention at present.Amine (ammonium) type material is used for suppressing the shale hydration swelling, improves the existing very long history of property of drilling fluid, and its kind is constantly developed, and function also obtains constantly perfect.High performance water-based drilling fluid is the latest research achievement with the polyamine potent inhibitor, but the further investigation of domestic shortage system.Therefore, need the strong hydrate inhibitor of shale of a kind of excellent performance of development, promote the high performance water-based drilling fluid development of technology.
Summary of the invention
The purpose of this invention is to provide a kind of high performance water-based drilling fluid that is used for excellent amine shale stability agent of rejection and preparation method thereof, this amine shale stability agent has that dosage is few, and rejection is excellent, and the advantage of environmental protection, readily biodegradable.
The objective of the invention is to realize like this:
A kind of drilling fluid is used the amine shale stabilizer, is the polymkeric substance that is generated according to mol ratio reaction in 10: 1～1: 20 by polyether diamine and epoxy alkane.Wherein polyether diamine is a kind of in polyethyleneoxide diamine or polypropyleneoxide diamine or the T 46155 Pn, and molecular weight is less than 1000; Epoxy alkane is one or more the mixture in oxyethane, propylene oxide or the butylene oxide ring.
A kind of drilling fluid provided by the invention uses amine shale stability agent implementation step to be: polyether diamine and catalyzer are added in the high-temperature high-pressure reaction kettle of sealing; Reaction kettle is vacuumized post-heating to heat up; Open simultaneously and stir, stirring velocity is controlled at 100-1000r/min., temperature adds 5～30% (weight percent) epoxy alkane when reaching 70～90 ℃.Continue elevated temperature, treat to add when temperature reaches controlled temperature residual epoxide alkane.Question response still internal pressure is reduced to termination reaction when no longer changing, and reduces temperature to room temperature, opens the still discharging, and products therefrom is directly as shale control agent.Controlled temperature is 90～140 ℃, is preferably 110～130 ℃.
Embodiment
Instance 1
At volume is to add 330g Diethylene Glycol two (3-aminopropyl) ether and 0.33g Pottasium Hydroxide in the high-temperature high-pressure reaction kettle of 1L, reaction kettle is vacuumized begin heating, opens stirring simultaneously, and stirring velocity is 300r/min., temperature feeds 26.4g oxyethane when rising to 90 ℃.Continue elevated temperature, when temperature rises to 115 ℃, feed 105.6g oxyethane.Keeping temperature of reaction after the reaction beginning is 120 ℃, after question response still internal pressure descends and remains unchanged, continues holding temperature 30min, is cooled to normal temperature then, opens the still discharging, obtains colourless or little yellow liquid, can directly add in the drilling fluid as shale control agent.The preparation feedback formula is following:
Instance 2
At volume is to add 330g Diethylene Glycol two (3-aminopropyl) ether and 0.33g Pottasium Hydroxide in the high-temperature high-pressure reaction kettle of 1L, reaction kettle is vacuumized begin heating, opens stirring simultaneously, and stirring velocity is 300r/min., temperature feeds 26.4g oxyethane when rising to 90 ℃.Continue elevated temperature, when temperature rises to 115 ℃, feed 105.6g oxyethane.Keeping temperature of reaction after the reaction beginning is 120 ℃, after question response still internal pressure descends and remains unchanged, continues holding temperature 30min; Be cooled to normal temperature then; Open the still discharging, obtain colourless or little yellow thick liquid, can directly add in the drilling fluid as shale control agent.The preparation feedback formula is following:
Instance 3: inhibition evaluation
For estimating the rejection of institute's synthetic aminated compounds, synthetic amine shale stabilizer and traditional inorganic salt suppressor factor KCl are carried out performance comparison with external shale control agent Ultrahib as shale control agent.Adopt to suppress swelling respectively and make the evaluation that experimentizes of slurry experiment, flexing experiment of hardness and shale rolling dispersion experiment with local methods.
1. suppress swelling and make the slurry experiment with local methods
Suppressing swelling, to make the slurry experimental procedure with local methods following: in the 400mL clear water, add the different concns suppressor factor; Regulation system pH >=9 add the 5wt% sodium bentonite simultaneously, under 6000r/min, stir 30min after; Slurries are poured in the aging tank; After 70 ℃ of heat are rolled 16h, be cooled to room temperature, stir the sex change of 5min test slurry stream.Add the equivalent wilkinite again and stir 30min, 70 ℃ of heat are rolled the sex change of 16h postcooling to room temperature test slurry stream.The too big reading of slurry viscosity repeats above-mentioned experimentation, till can not surveyed.
The different system readings of table 1 are with the variation of wilkinite dosage
Annotate: "-" expression reading no to scale scope.
Can know that from table 1 test result in clear water, along with the increase of wilkinite dosage, because the aquation of clay is disperseed, slurry viscosity increases sharply.When the wilkinite dosage was 20%, slurries exceeded useful range because viscosity is too big.In the Klorvess Liquid, the wilkinite dosage reaches 30% o'clock slurry viscosity can't be measured too greatly, shows stronger inhibition ability.And a kind of embodiment and embodiment all show good rejection for 2 kinds, and its AV and yield value all change along with the increase of wilkinite dosage slowly, and be suitable with external shale control agent Ultrahib inhibition effect.Wherein 2 kinds of embodiment reach 50% to bentonitic capacity limit.After showing the adding polyamine, the hydration swelling of clay can be effectively suppressed.
2. flexing experiment of hardness
Flexing experiment of hardness step is following: in the 350mL clear water, add the different concns suppressor factor, add 50g landwaste (taking from the Dagang Oilfield SHAHEJIE FORMATION) simultaneously.After 77 ℃ of heat are rolled 16h, landwaste is cleaned with normal saline solution, with the screening of 40 mesh standard sieves, the landwaste that sieves is added in the flexing experiment of hardness appearance, the driving torque spanner is exerted pressure, and the record torque value rotates the variation of the number of turns with dial torque wrench.
The variation of landwaste flexing hardness value after the different suppressor factor effects of table 2
Can know that from table 2 test result after heat was rolled in clear water, landwaste was because aquation is disperseed, integral hardness reduces.Along with dial torque wrench rotates the increase of the number of turns, torque value increases slowly, and landwaste is the noodles shape and extrudes from orifice plate when torque value increases to 15N.m.The landwaste aquation disperses necessarily to be suppressed after the 7%KCl solution effects, and along with the pressurization of dial torque wrench, torque value becomes greatly gradually, but landwaste is extruded from orifice plate when torque value increases to 56N.m.Landwaste is after 3%Ultrahib solution and a kind of embodiment and 2 kinds of solution effects of embodiment, and torque value increases sharply and reaches peak, shows that landwaste has kept big hardness, and the aquation of saltouing disperses to have obtained effective inhibition.
3. shale rolling dispersion experiment
Shale rolling dispersion experiment step is following: quantitatively take by weighing 2-5mm purpose landwaste (taking from the Shengli Oil Field SHAHEJIE FORMATION) 50.0g; Pack in the pint pot of 350mL different concns suppressor factor; After 77 ℃ of heat are rolled 16h, landwaste is cleaned with normal saline solution, sieve with 40 mesh standard sieves; Tail in 105 ℃ down oven dry 4h weigh, and be designated as the landwaste recovery one time with the ratio of initial landwaste quality.After 77 ℃ of heat roll 16 in the landwaste adding 350mL clear water that once reclaims, test its recovery, be designated as the secondary landwaste recovery; After 77 ℃ of heat roll 16 in the landwaste adding 350mL clear water of secondary recovery, test its recovery, be designated as the landwaste recovery three times.
Three recovery of the different suppressor factor of table 3
Can know from table 3 test result, add different suppressor factor after the landwaste recovery obviously improve.Wherein embodiment 1 is suitable with the landwaste recovery of landwaste recovery of embodiment 2 gained and external product Ultrahib, all far above the landwaste recovery of 7%KCl.Can know that from secondary recovery rate and three recovery test results Repone K secondary recovery rate and three recovery are more than primary recovery decline, Repone K only can be brought into play the inhibition effect of short period of time; Embodiment 1 compares with primary recovery with three recovery with embodiment 2 gained polyamine secondary recovery rates, descends to some extent but the reduction degree is less, shows that polyamine can bring into play the long term inhibition effect.
In above-mentioned instance, amine oligopolymer of the present invention can effectively suppress hydration and expansion of clay as shale control agent, and obviously is superior to traditional inorganic salt suppressor factor Repone K commonly used.Amine shale stabilizer significant feature mechanism of the present invention has: (1) amido in liquid phase protonated after; The ammonium ion that forms is adsorbed on clay particle surface; In with the negative charge of clay particle, reduce the Zeta potential of clay particle, weaken clay particle aquation repulsion; (2) ehter bond in the amine low-grade polymer molecule, hydroxyl etc. form hydrogen bond with the clay particle surface siloxanes, strengthen absorption, simultaneously the water molecules of clay particle surface absorption are driven away out; (3) the amine oligomer molecules is adsorbed on clay particle surface, and alkyl hydrophobic part wherein covers clay particle surface, and that clay particle is become is hydrophobic, and clay particle is difficult for aquation once more.Therefore, amine shale stabilizer of the present invention shows excellent rejection.
Claims (5)
1. a drilling fluid is used the amine shale stabilizer, is the polymkeric substance that is generated according to mol ratio reaction in 10: 1～1: 20 by polyether diamine and epoxy alkane, and its structural formula is following:
Wherein R and R ' are the alkylidene group of 2-4 for carbon atom, and m and n are 0 to 10 integer, and m and n can be identical, also can be different.
2. drilling fluid as claimed in claim 1 is used the amine shale stabilizer, and wherein polyether diamine is a kind of in polyethyleneoxide diamine or polypropyleneoxide diamine or the T 46155 Pn, and its molecular structure is following:
Wherein, 1. R is H atom or methyl;
2. x, y and z are integer, 0≤x≤6; 0≤y≤12; 0≤z≤6; 1≤x+y+z≤20;
3. the molecular weight of polyether diamine is less than 1000.
3. drilling fluid as claimed in claim 1 is used the amine shale stabilizer, and wherein epoxy alkane is oxyethane or propylene oxide or butylene oxide ring or its mixture.
4. drilling fluid as claimed in claim 1 is used the amine shale stabilizer, and its catalyzer can be a kind of in Pottasium Hydroxide, Marinco H, white lake, the yellow soda ash, and its dosage is 0.05～1.00%.
5. drilling fluid as claimed in claim 1 is with the preparation method of amine shale stabilizer; Comprise the steps: polyether diamine and catalyzer are added in the high-temperature high-pressure reaction kettle; Vacuumizing post-heating in the still heats up; Open simultaneously and stir, when temperature reaches 70～90 ℃, add 5～30% (weight percent) epoxy alkane.Continue the heating elevated temperature; Treat to add residual epoxide alkane after temperature reaches controlled temperature, keep temperature of reaction stable in the reaction process, treat that the still internal pressure is reduced to termination reaction when no longer changing; Be cooled to room temperature and open the still discharging, products therefrom is directly used the amine shale stabilizer as drilling fluid.Controlled temperature is 90～140 ℃, is preferably 110～130 ℃.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796498A (en) * | 2012-08-28 | 2012-11-28 | 西南石油大学 | Foam drilling fluid |
| CN103013470A (en) * | 2012-12-31 | 2013-04-03 | 中国石油化工股份有限公司 | Strong-inhibition drilling fluid system |
| CN103087691A (en) * | 2011-10-28 | 2013-05-08 | 中国石油化工股份有限公司 | Polyamine strong inhibitor for drilling fluid, and preparation method thereof |
| CN103965843A (en) * | 2014-05-04 | 2014-08-06 | 中国石油集团渤海钻探工程有限公司 | Multiple-effect inhibitor for water-based drilling fluid and preparing method thereof |
| CN104017208A (en) * | 2014-06-10 | 2014-09-03 | 成都佰椿石油科技有限公司 | Shale polyamine film formation inhibitor as well as preparation method thereof |
| CN104559957A (en) * | 2013-10-23 | 2015-04-29 | 中国石油化工股份有限公司 | Preparation method of shale inhibitor with filtrate reduction property |
| CN106093107A (en) * | 2016-07-07 | 2016-11-09 | 中国石油集团川庆钻探工程有限公司 | Evaluation method of shale inhibitor for drilling fluid |
| CN106497528A (en) * | 2016-11-03 | 2017-03-15 | 中国石油大学(华东) | A kind of shale-control agent for drilling fluid and preparation method thereof |
| CN106753287A (en) * | 2016-11-24 | 2017-05-31 | 中国石油大学(华东) | Ultralow temperature drilling fluid is used in a kind of deep-sea and permafrost region probing |
| CN107817262A (en) * | 2017-10-24 | 2018-03-20 | 西南石油大学 | A kind of method based on low-field nuclear magnetic resonance appraisal drilling liquid surface hydration inhibitor |
| CN106554462B (en) * | 2016-11-07 | 2019-03-26 | 中国石油大学(华东) | Coating agent and its preparation method and application and oil drilling drilling fluid |
| CN110268034A (en) * | 2016-12-09 | 2019-09-20 | 赢创德固赛有限公司 | Shale hydration inhibitor |
| CN111718698A (en) * | 2020-07-22 | 2020-09-29 | 西南石油大学 | Hyperbranched polyetheramine environment-friendly shale inhibitor, preparation method thereof and water-based drilling fluid |
| CN112011317A (en) * | 2020-08-11 | 2020-12-01 | 中国石油天然气集团有限公司 | Stabilizer for controlling fine clay dispersion in shale stratum drilling and preparation method thereof |
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Cited By (23)
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| CN103087691A (en) * | 2011-10-28 | 2013-05-08 | 中国石油化工股份有限公司 | Polyamine strong inhibitor for drilling fluid, and preparation method thereof |
| CN102796498A (en) * | 2012-08-28 | 2012-11-28 | 西南石油大学 | Foam drilling fluid |
| CN102796498B (en) * | 2012-08-28 | 2014-04-09 | 西南石油大学 | Foam drilling fluid |
| CN103013470A (en) * | 2012-12-31 | 2013-04-03 | 中国石油化工股份有限公司 | Strong-inhibition drilling fluid system |
| CN103013470B (en) * | 2012-12-31 | 2015-11-25 | 中国石油化工股份有限公司 | A kind of high inhibition drilling fluid system |
| CN104559957A (en) * | 2013-10-23 | 2015-04-29 | 中国石油化工股份有限公司 | Preparation method of shale inhibitor with filtrate reduction property |
| CN103965843A (en) * | 2014-05-04 | 2014-08-06 | 中国石油集团渤海钻探工程有限公司 | Multiple-effect inhibitor for water-based drilling fluid and preparing method thereof |
| CN103965843B (en) * | 2014-05-04 | 2016-05-18 | 中国石油集团渤海钻探工程有限公司 | Multiple-effect inhibitor and preparation method thereof for water-base drilling fluid |
| CN104017208A (en) * | 2014-06-10 | 2014-09-03 | 成都佰椿石油科技有限公司 | Shale polyamine film formation inhibitor as well as preparation method thereof |
| CN104017208B (en) * | 2014-06-10 | 2016-05-18 | 成都佰椿石油科技有限公司 | A kind of mud shale polyamine film forming inhibitor and preparation method thereof |
| CN106093107A (en) * | 2016-07-07 | 2016-11-09 | 中国石油集团川庆钻探工程有限公司 | Evaluation method of shale inhibitor for drilling fluid |
| CN106497528A (en) * | 2016-11-03 | 2017-03-15 | 中国石油大学(华东) | A kind of shale-control agent for drilling fluid and preparation method thereof |
| CN106497528B (en) * | 2016-11-03 | 2018-06-26 | 中国石油大学(华东) | A kind of shale-control agent for drilling fluid and preparation method thereof |
| CN106554462B (en) * | 2016-11-07 | 2019-03-26 | 中国石油大学(华东) | Coating agent and its preparation method and application and oil drilling drilling fluid |
| CN106753287A (en) * | 2016-11-24 | 2017-05-31 | 中国石油大学(华东) | Ultralow temperature drilling fluid is used in a kind of deep-sea and permafrost region probing |
| CN106753287B (en) * | 2016-11-24 | 2019-04-09 | 中国石油大学(华东) | A kind of deep-sea and permafrost region probing ultralow temperature drilling fluid |
| CN110268034A (en) * | 2016-12-09 | 2019-09-20 | 赢创德固赛有限公司 | Shale hydration inhibitor |
| CN110268034B (en) * | 2016-12-09 | 2022-09-06 | 赢创运营有限公司 | Shale hydration inhibition agent |
| CN107817262A (en) * | 2017-10-24 | 2018-03-20 | 西南石油大学 | A kind of method based on low-field nuclear magnetic resonance appraisal drilling liquid surface hydration inhibitor |
| CN111718698A (en) * | 2020-07-22 | 2020-09-29 | 西南石油大学 | Hyperbranched polyetheramine environment-friendly shale inhibitor, preparation method thereof and water-based drilling fluid |
| CN111718698B (en) * | 2020-07-22 | 2022-04-19 | 西南石油大学 | Hyperbranched polyetheramine environment-friendly shale inhibitor, preparation method thereof and water-based drilling fluid |
| CN112011317A (en) * | 2020-08-11 | 2020-12-01 | 中国石油天然气集团有限公司 | Stabilizer for controlling fine clay dispersion in shale stratum drilling and preparation method thereof |
| CN112011317B (en) * | 2020-08-11 | 2022-08-02 | 中国石油天然气集团有限公司 | Stabilizer for controlling fine clay dispersion in shale stratum drilling and preparation method thereof |
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Inventor after: Zhong Hanyi Inventor after: Qiu Zhengsong Inventor after: Huang Weian Inventor after: Lin Yongxue Inventor after: Liu Guichuan Inventor after: Zhang Guo Inventor after: Jiang Lin Inventor after: Cao Jie Inventor before: Qiu Zhengsong Inventor before: Zhong Hanyi Inventor before: Huang Weian Inventor before: Lin Yongxue Inventor before: Liu Guichuan Inventor before: Zhang Guo Inventor before: Jiang Lin Inventor before: Cao Jie |
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