CN100398622C - Solid polyalcohol in use for drilling fluid - Google Patents
Solid polyalcohol in use for drilling fluid Download PDFInfo
- Publication number
- CN100398622C CN100398622C CNB2006101441717A CN200610144171A CN100398622C CN 100398622 C CN100398622 C CN 100398622C CN B2006101441717 A CNB2006101441717 A CN B2006101441717A CN 200610144171 A CN200610144171 A CN 200610144171A CN 100398622 C CN100398622 C CN 100398622C
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- calcium lignin
- polyoxyethylene glycol
- lignin sulphonate
- molecular
- 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.)
- Expired - Fee Related
Links
Abstract
This invention provides solid polyol used in drilling fluid. The solid polyol is composed of: poly (ethylene glycol) (average molecular weight is 5500-7500), poly (oxyethylene ether) L61 and calcium lignosulfonate at a weight ratio of (1.95-2.05) :( 0.95-1.05) :( 1.95-2.05). The solid polyol solves the problems of difficult packaging; inconvenient addition and high transportation cost faced by present liquid polyol used in drilling fluid, and does not increase the viscosity or foam. This invention also provides a method for preparing the solid polyol used in drilling fluid. The method comprises: adequately mixing poly (ethylene glycol), poly (oxyethylene ether) L61 and calcium lignosulfonate according to the above ratio.
Description
Technical field
The present invention relates to water-base drilling fluid treatment agent commonly used in a kind of well drilling industry, refer in particular to solid polyalcohol in use for drilling fluid, this solid polyalcohol is except that having the advantage of present known drilling fluid with liquid polymeric alcohol, also overcome liquid polymeric alcohol need in the use extra package, loading and unloading and reinforced inconvenient, transportation cost is higher and shortcoming such as easy waste outside, also have not tackify, bubble-tight advantage.
Background technology
The stratum of 60～80% of drilling strata genus shale or similar shale in the oil-gas exploration and development process, the characteristics of shale formation are water-swelling, this makes drilling engineering can run into many difficulties that are difficult to overcome.At present, addressing this problem the most feasible way is exactly to improve the performance of drilling fluid.
In the field drilling work in early days, oil base drilling fluid is widely used, but oil base drilling fluid itself has unsurmountable shortcoming, and that has severe contamination, dangerous and cost an arm and a leg to environment exactly.Therefore, water-base drilling fluid has replaced oil base drilling fluid gradually in real work.Though water-base drilling fluid has the incomparable advantage of oil base drilling fluid in each side such as protection environment, has big gap at aspect of performance and oil base drilling fluid.In order to address this problem, under oilfielder's common concern and effort, various high-efficiency water-base drilling fluids have obtained developing rapidly.
The alcohols drilling fluid system is studied again and is used under this condition.Alcohols treatment agent in the existing alcohols drilling fluid system mostly is and contains the liquid mixture that is no more than 40% polymeric alcohol, polymeric alcohol is also referred to as polyvalent alcohol, compound alcohol in China, be a kind of novel water-based drilling solution additive that grows up the beginning of the nineties, have the following advantages:
(1) can improve the anti-collapse property and the oilness of polymer drilling fluid;
(2) polymer drilling fluid there is certain dilution viscosity reduction effect, and can improves the High Temperature High Pressure stability of polymer drilling fluid;
When (3) surpassing its cloud point temperature, can reduce the High Temperature High Pressure dehydration of drilling fluid, make the smooth densification of mud cake;
(4) the low fluorescence that has of polyvalent alcohol satisfies the needs of geological logging;
(5) the low bio-toxicity that has of polyvalent alcohol can satisfy the needs of environment protection;
(6) the polyvalent alcohol treatment agent can improve the anti-sea pollution of polymer mud, anti-native solid phase inferior is invaded dirt, anticalcium, anti-magnesium ability, makes mud property be easy to safeguard.
Because polyvalent alcohol has above advantage, be counted as the product of contradiction between the drilling engineering technology of coordinating, reservoir protection technology and the environment protection needs, be the rising star in the water base treatment agent of drilling fluid.
Though the research of polyvalent alcohol has obtained a lot of achievements, the polymeric alcohol of using all is a liquid form now, and the polyvalent alcohol of this liquid form has also produced many problems thus, for example, liquid polyol needs iron or plastic tank extra package, and loading and unloading are inconvenient, and transportation cost is higher; Reinforced inconvenient and waste easily; Oneself viscosity is bigger; Inevitably bubble in the use, cause bad and other problem of property of drilling fluid.
In sum, need a kind of advantage that had both kept polyvalent alcohol badly, the novel polyvalent alcohol that can solve the variety of problems of its existence again is applied in the water-base drilling fluid.
Summary of the invention
The present invention is directed to the deficiency that existing drilling fluid exists with liquid polyol, the drilling fluid of changing over all is the form of liquid with polyvalent alcohol, work out the solid polyalcohol in use for drilling fluid that exists with solid form, the solid polyalcohol in use for drilling fluid that provides a kind of multinomial performance index all to be improved.
The object of the present invention is to provide a kind of solid polyalcohol in use for drilling fluid, the performance index of this solid polyalcohol all are not less than existing drilling fluid liquid polymeric alcohol.
The invention provides a kind of solid polyalcohol in use for drilling fluid, it is that 5500～7500 polyoxyethylene glycol, polyoxy ether L61, calcium lignin sulphonate are formed by molecular-weight average, and the mass ratio of above-mentioned three kinds of components is 1.95～2.05: 0.95～1.05: 1.95～2.05.
Solid polyalcohol in use for drilling fluid provided by the present invention, its performance index are not less than drilling fluid liquid polyol commonly used now, and overcome drilling fluid with liquid polyol many shortcomings, as causing tackify, foaming easily, need extra package, loading and unloading are inconvenient, and transportation cost is higher, reinforced inconvenience and easy waste etc.Therefore, solid polyalcohol in use for drilling fluid is a kind of efficient, environmental protection, the economic water base treatment agent of drilling fluid.
Solid polyalcohol in use for drilling fluid of the present invention, wherein, molecular-weight average is that the mass ratio of 5500～7500 polyoxyethylene glycol, polyoxy ether L61, calcium lignin sulphonate preferably is about 2: 1: 2.
Molecular-weight average of the present invention is that 5500～7500 polyoxyethylene glycol are often referred to PEG6000 (or polyoxyethylene glycol PEG6000), because its molecular-weight average is bigger, is solid shape under the normal temperature, and existing drilling fluid seldom adopts with additive.Present invention focuses on to develop the drilling fluid additive that is suitable for heavy duty service.Experimental results show that, adopt molecular weight big (5500～7500) polyoxyethylene glycol (promptly, PEG6000) as the main raw material of drilling fluid with additive, cooperate other auxiliary materials, can reach all advantages that both kept water-base drilling fluid usefulness liquid polyol fully, solve the desired result of the variety of problems of its existence again well.
Polyoxy ether L61 of the present invention (polyethers L61) refers to the polyoxyethylene polyoxypropylene block polymer." L " among L61 representative is aqueous, and " 1 " is illustrated in that polyoxyethylated content is 10% in this molecule.This polyoxy ether L61 also can be described as polyoxy ether L61, polyethers L61, polyethers L61 or L61 in field of fine chemical, generally be used for preparing the synthetic detergent of the high detersive power of low bubble, in papermaking or fermentation industry, be used as defoamer, it is to suppress the inevitable foamed phenomenon that occurs of finished product that the present invention adds the L61 purpose, and plays the effect that increases the finished product oilness.
If the solid polyalcohol that is mixed and made into above-mentioned PEG6000 and L61 separately, though can reach the performance of drilling fluid additive, easy suction makes finished product become liquid state gradually by solid but the two mixes the back, has lost it and has been the advantage that should have of solid polyalcohol additive.The inventor is through a large amount of experiments, confirmed to add a certain amount of calcium lignin sulphonate, can solve molecular-weight average and be 5500～7500 polyoxyethylene glycol (being PEG6000) and the mixed suction problem of L61, and the contriver also finds, the adding of calcium lignin sulphonate makes the solid polyalcohol composition of making reduce drilling fluid viscosity when practical application and operation, makes it to be applicable to more the additive for drilling fluid of heavy duty service.
The present invention also provides a kind of preparation method of solid polyalcohol in use for drilling fluid, comprise with molecular-weight average be 5500～7500 polyoxyethylene glycol, polyoxy ether L61, calcium lignin sulphonate according to 1.95～2.05: 0.95～1.05: 1.95～2.05 mass ratioes mix.
Above-mentioned preparation method is preferably, and earlier polyoxy ether L61 and calcium lignin sulphonate is mixed, and the polyoxyethylene glycol with molecular-weight average 5500～7500 mixes again.
In a preferred embodiment of the invention, the preparation method is preferably, and earlier L61 and calcium lignin sulphonate is mixed; Again the polyoxyethylene glycol (PEG6000) of molecular-weight average 5500～7500 is pulverized, the degree of pulverizing is grasped and is being destroyed its original block-shape morphology, there is certain particle to get final product, it is this area general knowledge, purpose is in order to allow L61 and lignosulfonic acid calcium compounds, and the molecular-weight average that can wrap up certain particle size more equably is 5500～7500 polyoxyethylene glycol (PEG6000); At last the polyoxyethylene glycol (PEG6000) of the molecular weight 5500～7500 after mixed L61 and calcium lignin sulphonate and the pulverizing is mixed and get final product.For convenient in use, drilling fluid can fully mix and stir the above-mentioned final mixture that obtains with the better effects if of additive, at last the mixture that obtains is pulverized.
The application of solid polyalcohol in drilling fluid usefulness additive that the present invention also provides aforesaid method to make, application method is for directly to be added to it in drilling fluid, and add-on is generally 2%～3%, and unit is quality (g)/volume (mL).
Solid polyalcohol in use for drilling fluid provided by the present invention, it is a kind of composition, is that three kinds of materials of polyoxyethylene glycol, L61, calcium lignin sulphonate of 5500～7500 mix by molecular-weight average preferably, mass ratio preferably is about 2: 1: 2.
Molecular-weight average of the present invention is 5500～7500 polyoxyethylene glycol (being PEG6000), and raw materials such as polyoxy ether L61 and calcium lignin sulphonate are the general industry product, commercially available getting.
The performance test of product of the present invention, undertaken by the main evaluation procedure of commercially available liquid polymeric alcohol:
1.1 the foaming situation is measured.Get 350mL distilled water, add 1.0g yellow soda ash, add the 22.5g drilling fluid again and use sodium soil with test, high-speed stirring 20min adds the 10.5g sample, observes the base slurry and produces the bubble situation.
1.2 cloud point is measured.Get 100mL distilled water and pour in the clean beaker, add the 1.0g sample, stirring at low speed 20min puts into above-mentioned solution with thermometer, beaker is placed on heats on the heating jacket, and the temperature of solution during by clear feculence is cloud point.
1.3 apparent viscosity is than measuring.
1.3.1 join two parts of base slurries, get 350mL distilled water, add 1.0g yellow soda ash, add the 22.5g drilling fluid again and use sodium soil, high-speed stirring 20min with testing.
1.3.2 get a base slurry, survey its apparent viscosity, be decided to be AV
1Get another part base slurry, add the 10.5g sample, high-speed stirring 20min surveys its apparent viscosity, is decided to be AV
2
1.3.3 calculate: the apparent viscosity ratio
1.4 the lubricating coefficient reduced rate is measured.
1.4.1 join two parts of base slurries, get 350mL distilled water, add the 15.0g drilling fluid and use sodium soil, high-speed stirring 20min with testing.Get a base slurry, add 10.5g sample and 0.5g NaOH, high-speed stirring 20min obtains the sample slurry.Get E-P extreme boundary lubrication combined instrument, the stationary value of measuring base slurry and sample slurry lubricating coefficient at room temperature (is respectively K
1, K
2).
1.4.2 calculate: the lubricating coefficient reduced rate
1.5 fluorescence grade is measured.
In the 50mL beaker of cleaning oven dry, add the 20mL methylene dichloride, add the 0.5mL sample again, shake up, fall a part in clean tube, under the UV-light instrument, watch fluorescence then and determine fluorescence grade with the standard series contrast.
1.6 in the above test procedure 1.1, can be observed and only occur a small amount of bubble and very fast disappearance in the base slurry.
By above test procedure, the relevant leading indicator with reference to commercially available liquid polymeric alcohol obtains following result:
| Project | General drilling fluid additive index | Result's (is example with embodiment 1) |
| Outward appearance | Free flowing powder or powder | Free flowing powder |
| Cloud point, ℃ | 30～50 | 32 |
| The apparent viscosity ratio | ≤1.0 | 0.9 |
| The lubricating coefficient reduced rate, % | ≥50 | 58 |
| Fluorescence, level | ≤5 | 3 |
| The foaming situation | Not obvious | Almost lose bubble |
From above-mentioned experimental result, the every performance index of the present invention all reach design requirements.Product wherein of the present invention is a free flowing powder, shows that solid polyalcohol realized the convenient transportation purpose; Cloud point shows that about 32 ℃ solid polyalcohol is applicable to the deep drilling operation; Apparent viscosity is than less than 1, show that solid polyalcohol adds drilling fluid after, drilling fluid can not increase viscosity, and is little to the drilling fluid rheology influence; Fluorescence grade is 3, and the luminous degree when showing the application of solid polyalcohol can not found to have a negative impact to the oil gas of exploratory development; Bubble is little, shows that solid polyalcohol can not have a negative impact to the efficient of drill pump.Therefore, solid polyalcohol of the present invention is a kind of good drilling fluid solid additive.
Embodiment
Below describe the present invention in detail, but do not limit practical range of the present invention.
Embodiment 1:
Form: the mass ratio of polyoxyethylene glycol PEG6000, polyoxy ether L61, calcium lignin sulphonate is 2: 1: 2.
Preparation method: earlier L61 and calcium lignin sulphonate are mixed; Again PEG6000 is ground into and helps the mobile particle; At last mixed L61 and calcium lignin sulphonate are mixed with PEG6000 after the pulverizing, fully mix and stir again, get final product.
Addition with 2% is added in the drilling fluid, and through test, every index is all qualified.
Embodiment 2:
Form: the mass ratio of polyoxyethylene glycol PEG6000, polyoxy ether L61, calcium lignin sulphonate is 2.05: 1: 2.
Preparation method: earlier L61 and calcium lignin sulphonate are mixed; Again PEG6000 is pulverized; At last mixed L61 and calcium lignin sulphonate are mixed with PEG6000 after the pulverizing, fully mix and stir again, get final product.
Addition with 3% is added in the drilling fluid, and through test, every index is all qualified.
Embodiment 3:
Form: the mass ratio of polyoxyethylene glycol PEG6000, polyoxy ether L61, calcium lignin sulphonate is 1.95: 1: 2.05.
Preparation method: earlier L61 and calcium lignin sulphonate are mixed; Again PEG6000 is pulverized; At last mixed L61 and calcium lignin sulphonate are mixed with PEG6000 after the pulverizing, fully mix and stir again, get final product.
Through test, every index is all qualified.
Embodiment 4:
Form: polyoxyethylene glycol PEG6000, polyethers L61, calcium lignin sulphonate, its mass ratio are 2.05: 0.95: 1.95.
Preparation method: earlier L61 and calcium lignin sulphonate are mixed; Again PEG6000 is pulverized; At last mixed L61 and calcium lignin sulphonate are mixed with polyoxyethylene glycol after the pulverizing, fully mix and stir again, get final product.
Through test, every index is all qualified.
Embodiment 5:
Form: the mass ratio of polyoxyethylene glycol PEG6000, polyoxy ether L61, calcium lignin sulphonate is 2.05: 0.9: 2.05.
Preparation method:, get final product with PEG6000, L61 and calcium lignin sulphonate thorough mixing.
Through test, every index is all qualified.
Claims (6)
1. solid polyalcohol in use for drilling fluid composition, it is that 5500～7500 polyoxyethylene glycol, polyoxy ether L61, calcium lignin sulphonate are formed by molecular-weight average, the mass ratio of above-mentioned three kinds of components is 1.95～2.05: 0.95～1.05: 1.95～2.05.
2. according to the solid polyalcohol in use for drilling fluid composition described in the right 1, wherein said molecular-weight average is that the mass ratio of 5500～7500 polyoxyethylene glycol, polyoxy ether L61, calcium lignin sulphonate is 2: 1: 2.
3. solid polyalcohol in use for drilling fluid preparation of compositions method, this method comprise with described molecular-weight average be 5500～7500 polyoxyethylene glycol, polyoxy ether L61, calcium lignin sulphonate according to 1.95～2.05: 0.95～1.05: 1.95～2.05 mass ratioes mix.
4. according to the preparation method of claim 3, comprising, earlier polyoxy ether L61 and calcium lignin sulphonate are mixed, be that 5500～7500 polyoxyethylene glycol mixes with molecular-weight average again.
5. according to the preparation method of claim 4, comprising, earlier polyoxy ether L61 and calcium lignin sulphonate are mixed, again with pulverize after molecular-weight average be that 5500～7500 polyoxyethylene glycol mixes, at last with the mixture pulverizing that obtains.
6. the application of the described solid polyalcohol composition of claim 1 in drilling fluid usefulness additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101441717A CN100398622C (en) | 2006-11-29 | 2006-11-29 | Solid polyalcohol in use for drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101441717A CN100398622C (en) | 2006-11-29 | 2006-11-29 | Solid polyalcohol in use for drilling fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1958713A CN1958713A (en) | 2007-05-09 |
| CN100398622C true CN100398622C (en) | 2008-07-02 |
Family
ID=38070572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101441717A Expired - Fee Related CN100398622C (en) | 2006-11-29 | 2006-11-29 | Solid polyalcohol in use for drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100398622C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104341589B (en) * | 2014-10-17 | 2015-11-18 | 北京培康佳业技术发展有限公司 | Oil field drilling fluids solid polymerization alcohol and preparation method thereof and application |
| CN106634887A (en) * | 2016-12-30 | 2017-05-10 | 胜利油田龙玺石油工程服务有限责任公司 | Production method for anti-sloughing lubricating solid polyalcohol used for drilling fluid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052349A (en) * | 1989-12-09 | 1991-06-19 | 中南工业大学 | Multifunctional well-drilling liquid treating agent and preparation method thereof |
| CN1132761A (en) * | 1994-11-28 | 1996-10-09 | 罗纳·布朗克化学公司 | Gel of apolar medium, its use for preparation of water-based drilling fluids |
| CN1342189A (en) * | 1999-02-09 | 2002-03-27 | Masi科技股份有限公司 | Aphron-containing aqueous well drilling and servicing fluids |
| US20040058826A1 (en) * | 2002-07-17 | 2004-03-25 | Jerry Rayborn | Drilling fluid additive system containing talc and graphite |
-
2006
- 2006-11-29 CN CNB2006101441717A patent/CN100398622C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052349A (en) * | 1989-12-09 | 1991-06-19 | 中南工业大学 | Multifunctional well-drilling liquid treating agent and preparation method thereof |
| CN1132761A (en) * | 1994-11-28 | 1996-10-09 | 罗纳·布朗克化学公司 | Gel of apolar medium, its use for preparation of water-based drilling fluids |
| CN1342189A (en) * | 1999-02-09 | 2002-03-27 | Masi科技股份有限公司 | Aphron-containing aqueous well drilling and servicing fluids |
| US20040058826A1 (en) * | 2002-07-17 | 2004-03-25 | Jerry Rayborn | Drilling fluid additive system containing talc and graphite |
Non-Patent Citations (2)
| Title |
|---|
| 聚氧乙烯-聚氧丙烯嵌段共聚物泡沫性质的研究. 戴乐蓉.石油化工，第23卷第6期. 1994 |
| 聚氧乙烯-聚氧丙烯嵌段共聚物泡沫性质的研究. 戴乐蓉.石油化工，第23卷第6期. 1994 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1958713A (en) | 2007-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103384708B (en) | Water-based drilling fluid containing cross linked polyacrylate | |
| Fink | Petroleum engineer's guide to oil field chemicals and fluids | |
| US4265264A (en) | Method of transporting viscous hydrocarbons | |
| US4285356A (en) | Method of transporting viscous hydrocarbons | |
| CN110431212A (en) | Emulsifier combination and its application method for reversed-phase emulsion fluid | |
| CN103967462B (en) | Use the flooding method of viscoelastic surfactant | |
| CN103320104B (en) | A kind of water-in-oil-type biofuel base drilling fluid and preparation method thereof | |
| CN102277140B (en) | Multifunctional solid lubricant for well drilling liquid | |
| CN104962247B (en) | A kind of drilling fluid lubrication sealing agent and preparation method thereof | |
| US6417142B1 (en) | Defoaming methods and compositions | |
| AU749148B2 (en) | Invert emulsion well drilling and servicing fluids | |
| CN106267910A (en) | A kind of defoamer and its production and use | |
| CN104263339A (en) | Oil-based drilling fluid shaft completion cleaning fluid and preparation method thereof | |
| CN109370544A (en) | Drilling fluid inhibition lubricant ether polymer and preparation method thereof | |
| CN109054777B (en) | Solid lubricant for well drilling liquid and preparation method thereof | |
| CN100398622C (en) | Solid polyalcohol in use for drilling fluid | |
| CN110066661B (en) | Retaining wall slurry for underground continuous wall of deep and large foundation pit in gravel stratum and preparation method of retaining wall slurry | |
| US11225594B1 (en) | Drilling fluid for enhancing stratum pressure bearing capacity and preparation method and method of using thereof | |
| CA1217321A (en) | Foaming agent | |
| CN104559972A (en) | Microcrack micro-nano plugging material for drilling and preparation method | |
| CN111548782B (en) | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof | |
| CN111748328B (en) | Ultrahigh-temperature long-acting stable oil-based well completion fluid and preparation method thereof | |
| CN115197683B (en) | Leakage-proof low-density microbubble workover fluid and preparation method thereof | |
| CN113652236B (en) | Mudstone dispersant and preparation method thereof | |
| JP2014092018A (en) | Cellular shield construction method suitable for excavating sand gravel subgrade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |