CN101294069A - Super-high density high temperature resistant drilling fluids - Google Patents
Super-high density high temperature resistant drilling fluids Download PDFInfo
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- CN101294069A CN101294069A CNA2007100490335A CN200710049033A CN101294069A CN 101294069 A CN101294069 A CN 101294069A CN A2007100490335 A CNA2007100490335 A CN A2007100490335A CN 200710049033 A CN200710049033 A CN 200710049033A CN 101294069 A CN101294069 A CN 101294069A
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Abstract
The invention relates to a drilling fluid for the petroleum and natural gas exploration and development process, in particular to a high-temperature resistant drilling fluid with ultrahigh density. The drilling fluid comprises bentonite 1.2 to 5%, composite metal ion polymer 0.1 to 0.5%, polymer viscosity reducing agent 0.1 to 0.4%, high-temperature resistant filtration-loss-reducing agent 3 to 5%, high-temperature resistant stabilizer 2 to 4%, anti-seize lubricant 4 to 6%, emulsifying agent 0.2%, alkaline PH value regulator 0.1 to 0.3%, weighting agent for drilling fluid 30 to 40% and clear water 40 to 55%. The drilling fluid has the high temperature resistance up to 180 DEG C and the controllable density up to 3.0 g/cm<3>, and has remarkable advantages of improved drilling speed, suppressed mud making in stratum, improved stability of well walls, good thermal stability of the sulfonated drilling fluid, good fluidity at high temperature, low water loss, etc. The drilling fluid is specifically suitable for drilling ultra-deep wells, special wells and complex wells.
Description
(1) technical field
The present invention is the drilling fluid that uses in oil, the natural gas exploratory development process, the high temperature resistant drilling fluids that particularly has super-high density.
(2) background technology
Drilling fluid is the general name that satisfies the various circulating fluid of drilling well need of work in the oil/gas drilling process with its multiple function, is the blood of petroleum exploration and development, is requisite in the drilling process.Along with the increase of world energy sources demand and the minimizing of resource, become inevitable to deep stratum exploration oil gas.The intensification of oil gas well, formation temperature, pressure are all along with rising, and drilling fluid just is faced with high temperature, highly compressed difficult point, require drilling fluid to have satisfactory stability and rheological under ultra high temp and super-high density.And existing drilling fluid generally adopts both sexes compound ion drilling fluid and positive colloid drilling fluid, and existing drilling fluid high-temperature resistance is poor, and density is lower, generally at 2.0g/cm
3About, along with the drilling strata condition is increasingly sophisticated, the increase of drilling depth, existing drilling fluid can not have been satisfied the requirement to the density of drilling fluid, temperature, rheological, oilness, inhibition, dehydration building capacity etc. of drilling operation in the deep-seated oil gas exploration performance history well.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of high-temperature resistance strong, the high temperature resistant drilling fluids of the super-high density that controlled density is high, this drilling fluid had both had polymer drilling fluid in the outstanding advantage that improves aspects such as drilling well drilling speed, inhibition stratum pulping and raising borehole wall stability, has the good thermostability of sulfonated drilling fluid again, good rheological under the high temperature, advantage such as fluid loss is low.
Solution of the present invention is: a kind of high temperature resistant drilling fluids of super-high density, its characteristics are that the each component proportioning is as follows:
Wilkinite 1.2-5%,
Composite metal ion polymkeric substance 0.1-0.5%,
Polymer viscosity reducer 0.1-0.4%,
Heat resisting fluid loss reducing agent 3-5%,
High temperature resistance stablizer 2-4%,
Anti-seize lubricant 4-6%,
Emulsifying agent 0.2%,
Alkaline ph value conditioning agent 0.1-0.3%,
Drilling fluid weighting agent 30-40%,
Clear water 40-55%.
Bentonitic effect is to make drilling fluid that certain dispersity be arranged in the solution of the present invention, improves the viscosity of drilling fluid and effective cutting carring, wellbore clearance; The effect of composite metal ion polymkeric substance is viscosity, the shear force that improves drilling fluid, makes drilling fluid can effectively improve the ability of cutting carring, can wrap up landwaste, suppresses the aquation of mud shale and disperses, hydration swelling, the inhibition ability of raising drilling fluid; Polymer viscosity reducer can adopt amphoteric ion polymer viscosity-depression agent (XY-27), and its effect is dispersity and the viscosity that appropriateness reduces drilling fluid, makes drilling fluid have suitable rheological property; Heat resisting fluid loss reducing agent can adopt sulfonated phenol formaldehyde resin (SMP-1) or anti-calcium and anti-salt fluid loss agent (RSTF) or the brown matchmaker of sulfonation (SMC), its effect is the filtration capacity that falls that at high temperature improves drilling fluid, especially under 180-220 ℃ of hot conditions, still have the good filtration capacity that falls, reduce drilling fluid filter loss at high temperature; The anti-seize lubricant effect is at high temperature, improves the lubricity of drilling fluid, prevents bit freezing; Emulsifying agent can adopt sorbester p17 (SP-80), and its effect is the dispersity that forms water-in-oil with clear water, oil, improves oil, improves the lubricity of lubricant for drilling fluids, reduces the friction resistance of drilling fluid, strengthens the drilling fluid shut-off capacity; Drilling fluid can adopt the modified barite powder with weighting agent, and its effect is the density that improves drilling fluid; Its effect of high temperature resistance stablizer (RZ-1) is the high-temperature resistance that improves the each component of drilling fluid, makes that drilling fluid has satisfactory stability and rheological property under hot conditions; The alkaline ph value conditioning agent can adopt potassium hydroxide (KOH), and its effect is a pH value of regulating drilling fluid, makes the composition of drilling fluid more can bring into play its filtration reduction energy, dilution properties and lubricity under certain pH value.
Advantage of the present invention: its controlled density of drilling fluid of the present invention reaches 3.0g/cm
3High-temperature resistance reaches more than 180 ℃, it is the high temperature resistant drilling fluids that polymer drilling fluid and sulfonated drilling fluid are combined and form, both had polymer drilling fluid and improved drilling speed, suppressed the outstanding advantage of aspects such as stratum pulping and raising borehole wall stability, had the good thermostability of sulfonated drilling fluid again, good rheological under the high temperature, advantages such as fluid loss is low satisfy ultra deep well fully, the probing requirement of special and complicated well.After testing, its performance index such as following table:
Data by last table show that this drilling fluid density reaches 2.7～3.0g/cm
3After, every excellent property can satisfy the requirement of wellbore construction.
(4) embodiment
Embodiment 1: the high temperature resistant drilling fluids each component proportioning of super-high density is as follows:
Wilkinite 1.25%,
Composite metal ion polymkeric substance 0.3%,
Amphoteric ion polymer viscosity-depression agent (XY-27) 0.2%,
Sulfonated phenol formaldehyde resin (SMP-1) 4%,
High temperature resistance stablizer (RZ-1) 2%,
Anti-seize lubricant 5%,
Sorbester p17 (SP-80) 0.2%,
Potassium hydroxide (KOH) 0.25%,
Modified barite powder 40%,
Clear water 46.8%.
To make density up to 2.50g/cm after the above-mentioned raw materials mixing
3Drilling fluid, it is applied to No. 1 well in dam, river, the Northeast, river, well depth 6130m, reservoir section formation temperature reaches 160 ℃, its performance index such as following table:
| Density g/cm3 | Funnel viscosity s | Surface viscosity mPa.s | Plastic viscosity mPa.s | Yield value Pa | Ingress/egress Pa/Pa | The middle dehydration mL that presses | High Temperature High Pressure dehydration mL | Aging condition |
| 2.5 | 72 | 126 | 108 | 18 | 6.5/17.5 | 3.6 | 8.4 | Before aging |
| 2.5 | 43 | 66 | 51 | 15 | 2.5/11.0 | 2.8 | 9.2 | 160 ℃ once aging after |
| 2.5 | 42 | 68.5 | 51 | 17.5 | 2.5/9.5 | 2.5 | 8.6 | 160 ℃ once aging after |
Embodiment 2: the high temperature resistant drilling fluids each component proportioning of super-high density is as follows:
Wilkinite 1.5%,
Composite metal ion polymkeric substance 0.5%,
Amphoteric ion polymer viscosity-depression agent (XY-27) 0.4%,
Sulfonated phenol formaldehyde resin (SMP-1) 3%,
High temperature resistance stablizer (RZ-1) 2%,
Anti-seize lubricant 5%,
Sorbester p17 (SP-80) 0.2%,
Potassium hydroxide (KOH) 0.2%,
Modified barite powder 35%,
Clear water 52.2%.
With above-mentioned raw materials mixed density up to 2.15g/cm
3Drilling fluid, it is applied to new No. 2 wells in west area, river, well depth 4213m, formation temperature reaches 130 ℃, its performance index such as following table.
| Density is counted g/cm3 | Funnel viscosity s | Surface viscosity mPa.s | Yield value Pa | Ingress/egress Pa/Pa | The middle dehydration mL that presses | High Temperature High Pressure dehydration mL | Aging condition |
| 2.15 | 46 | 37 | 20 | 7.5 | 3.6 | 9.6 | Before aging (130 ℃) |
| 2.15 | 45 | 36 | 18 | 6.5’/15 | 3.8 | 8.4 | Once aging (130 ℃) |
| 2.15 | 47 | 32 | 19 | 7.0/16 | 3.6 | 8.8 | Secondary wear out (130 ℃) |
This drilling fluid has good high temperature resistance stability and rheological property in drilling process, satisfy the requirement of deep-well high temperature high density drilling fluid and safe, fast, efficient drilling well requirement.
Claims (6)
1, a kind of high temperature resistant drilling fluids of super-high density is characterized in that the each component proportioning is as follows:
Wilkinite 1.2-5%,
Composite metal ion polymkeric substance 0.1-0.5%,
Polymer viscosity reducer 0.1-0.4%,
Heat resisting fluid loss reducing agent 3-5%,
High temperature resistance stablizer 2-4%,
Anti-seize lubricant 4-6%,
Emulsifying agent 0.2%,
Alkaline ph value conditioning agent 0.1-0.3%,
Drilling fluid weighting agent 30-40%,
Clear water 40-55%.
2, the high temperature resistant drilling fluids of super-high density according to claim 1 is characterized in that described polymer viscosity reducer is the zwitterion polymerization viscosity-depression agent.
3, the high temperature resistant drilling fluids of super-high density according to claim 1 is characterized in that described heat resisting fluid loss reducing agent is sulfonated phenol formaldehyde resin or anti-calcium and anti-salt fluid loss agent or sulfonated lignite.
4,, it is characterized in that described emulsifying agent is a sorbester p17 according to the high temperature resistant drilling fluids of the described 1 described super-high density of claim.
5, the high temperature resistant drilling fluids of super-high density according to claim 1 is characterized in that described drilling fluid weighting agent is the modified barite powder.
6, the high temperature resistant drilling fluids of super-high density according to claim 1 is characterized in that described alkaline ph value conditioning agent is a potassium hydroxide.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100490335A CN101294069A (en) | 2007-04-28 | 2007-04-28 | Super-high density high temperature resistant drilling fluids |
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| CNA2007100490335A CN101294069A (en) | 2007-04-28 | 2007-04-28 | Super-high density high temperature resistant drilling fluids |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717622B (en) * | 2009-11-30 | 2012-10-10 | 北京奥凯立科技发展股份有限公司 | Lubricating inhibitor for drilling fluid and preparation method thereof and drilling fluid containing lubricating inhibitor for drilling fluid |
| CN101705080B (en) * | 2009-12-04 | 2012-12-05 | 中国石油大学(华东) | Deepwater drilling liquid |
| CN102851010A (en) * | 2011-06-30 | 2013-01-02 | 长江大学 | Water-based high-density rapid well killing liquid reserve |
| CN102851011A (en) * | 2011-06-30 | 2013-01-02 | 长江大学 | Polymer drilling fluid with high temperature resistance |
| CN102911648A (en) * | 2012-11-06 | 2013-02-06 | 中国石油大学(华东) | High-temperature resistant viscosity-increasing filtration-loss reducing agent and preparation method thereof used for drilling fluid |
| CN103013468A (en) * | 2011-09-28 | 2013-04-03 | 中国石油化工股份有限公司 | Salt-resistant drilling fluid with super-high density, preparation method and application thereof |
| CN103265941A (en) * | 2013-05-28 | 2013-08-28 | 西南石油大学 | Weighting water-based fracturing drag reducer |
| CN103361038A (en) * | 2012-12-11 | 2013-10-23 | 中国石油化工股份有限公司 | High-temperature and high-density fresh water drilling fluid |
| CN103756650A (en) * | 2013-12-31 | 2014-04-30 | 濮阳市诚信钻采助剂有限公司 | Drilling powder for geological prospecting and preparation method thereof |
| CN103788932A (en) * | 2014-02-11 | 2014-05-14 | 北京石大博诚科技有限公司 | Nano weighting agent for oil field |
| CN104559967A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Superhigh-density high-temperature-resistant saturated salt-water drilling fluid and preparation method thereof |
| CN105154039A (en) * | 2014-06-16 | 2015-12-16 | 成都棕通石油配件有限公司 | Drilling mud for drilling ultra-deep well |
| CN108913109A (en) * | 2018-08-01 | 2018-11-30 | 中国石油集团川庆钻探工程有限公司 | A kind of long-acting stable type water based completion liquid and preparation method thereof |
| CN111423858A (en) * | 2019-01-09 | 2020-07-17 | 谢丽君 | High-temperature high-density seawater-based drilling fluid |
| CN113956854A (en) * | 2020-07-21 | 2022-01-21 | 中国石油天然气股份有限公司 | Viscosity reducer, drilling fluid and preparation method and application of viscosity reducer and drilling fluid |
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2007
- 2007-04-28 CN CNA2007100490335A patent/CN101294069A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717622B (en) * | 2009-11-30 | 2012-10-10 | 北京奥凯立科技发展股份有限公司 | Lubricating inhibitor for drilling fluid and preparation method thereof and drilling fluid containing lubricating inhibitor for drilling fluid |
| CN101705080B (en) * | 2009-12-04 | 2012-12-05 | 中国石油大学(华东) | Deepwater drilling liquid |
| CN102851010A (en) * | 2011-06-30 | 2013-01-02 | 长江大学 | Water-based high-density rapid well killing liquid reserve |
| CN102851011A (en) * | 2011-06-30 | 2013-01-02 | 长江大学 | Polymer drilling fluid with high temperature resistance |
| CN102851010B (en) * | 2011-06-30 | 2014-11-26 | 长江大学 | Water-based high-density rapid well killing liquid reserve |
| CN103013468B (en) * | 2011-09-28 | 2014-10-22 | 中国石油化工股份有限公司 | Salt-resistant drilling fluid with super-high density, preparation method and application thereof |
| CN103013468A (en) * | 2011-09-28 | 2013-04-03 | 中国石油化工股份有限公司 | Salt-resistant drilling fluid with super-high density, preparation method and application thereof |
| CN102911648A (en) * | 2012-11-06 | 2013-02-06 | 中国石油大学(华东) | High-temperature resistant viscosity-increasing filtration-loss reducing agent and preparation method thereof used for drilling fluid |
| CN102911648B (en) * | 2012-11-06 | 2013-09-25 | 中国石油大学(华东) | High-temperature resistant viscosity-increasing filtration-loss reducing agent and preparation method thereof used for drilling fluid |
| CN103361038B (en) * | 2012-12-11 | 2017-10-03 | 中国石油化工股份有限公司 | A kind of high-temperature high-density fresh-water drilling fluid |
| CN103361038A (en) * | 2012-12-11 | 2013-10-23 | 中国石油化工股份有限公司 | High-temperature and high-density fresh water drilling fluid |
| CN103265941A (en) * | 2013-05-28 | 2013-08-28 | 西南石油大学 | Weighting water-based fracturing drag reducer |
| CN103265941B (en) * | 2013-05-28 | 2014-05-28 | 西南石油大学 | Weighting water-based fracturing drag reducer |
| CN104559967A (en) * | 2013-10-27 | 2015-04-29 | 中国石油化工集团公司 | Superhigh-density high-temperature-resistant saturated salt-water drilling fluid and preparation method thereof |
| CN103756650A (en) * | 2013-12-31 | 2014-04-30 | 濮阳市诚信钻采助剂有限公司 | Drilling powder for geological prospecting and preparation method thereof |
| CN103788932A (en) * | 2014-02-11 | 2014-05-14 | 北京石大博诚科技有限公司 | Nano weighting agent for oil field |
| CN103788932B (en) * | 2014-02-11 | 2017-06-09 | 北京石大博诚科技有限公司 | Oil field nanometer heavy weight additive |
| CN105154039A (en) * | 2014-06-16 | 2015-12-16 | 成都棕通石油配件有限公司 | Drilling mud for drilling ultra-deep well |
| CN108913109A (en) * | 2018-08-01 | 2018-11-30 | 中国石油集团川庆钻探工程有限公司 | A kind of long-acting stable type water based completion liquid and preparation method thereof |
| CN108913109B (en) * | 2018-08-01 | 2021-05-18 | 中国石油集团川庆钻探工程有限公司 | Long-acting stable water-based well completion fluid and preparation method thereof |
| CN111423858A (en) * | 2019-01-09 | 2020-07-17 | 谢丽君 | High-temperature high-density seawater-based drilling fluid |
| CN113956854A (en) * | 2020-07-21 | 2022-01-21 | 中国石油天然气股份有限公司 | Viscosity reducer, drilling fluid and preparation method and application of viscosity reducer and drilling fluid |
| CN113956854B (en) * | 2020-07-21 | 2023-02-28 | 中国石油天然气股份有限公司 | Viscosity reducer, drilling fluid and preparation method and application of viscosity reducer and drilling fluid |
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Effective date of registration: 20090306 Address after: Postcode 116, Binhe North Road, Mianyang, Sichuan Province, China: 621000 Applicant after: Sichuan Renzhi Oilfield Technology Services Co., Ltd. Address before: 53, west section, West Garden Road, Sichuan, Mianyang Province, China: 621000 Applicant before: Mianyang Renzhi Industry Development Co., Ltd. |
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