CN1530418A - Secondary organic cationic polymer well drilling liquid - Google Patents
Secondary organic cationic polymer well drilling liquid Download PDFInfo
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- CN1530418A CN1530418A CNA031145485A CN03114548A CN1530418A CN 1530418 A CN1530418 A CN 1530418A CN A031145485 A CNA031145485 A CN A031145485A CN 03114548 A CN03114548 A CN 03114548A CN 1530418 A CN1530418 A CN 1530418A
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Abstract
A water-based secondary organic cation-polymer solution as drilling liquid is prepared from secondary organic cation generator prepared by reaction between the compound containing N, P and S and chloroalkane, hydrolytic polyacrylamide PHP and potassium polyacrylate KPAM. Its advantages are very strong restraint property and controlled performance.
Description
Affiliated technical field: the present invention relates to a kind of secondary organic cationic polymer drilling fluid, particularly about a kind of water base secondary organic cationic polymer drilling fluid.
Background technology: the polymer drilling fluid that uses is essentially negatively charged ion and positively charged ion two major types at present, and the use range of negatively charged ion system is far longer than cationic system.This mainly is because cationic polymers mainly is a clay stabilizer, though drilling fluid has extremely strong inhibition, caving-preventing ability, because its treatment agent does not match as viscosity, filtration control agent etc., performance regulation and control difficulty can only be used under given conditions; When its performance was controlled with the anionic treatment agent, its cation group had been cancelled and has remained little, and its inhibition also greatly weakens, and has been not cationic polymer drilling fluid truly; The anionic polymer additive for drilling fluid is supporting fully, and the performance regulation and control use technology simple easily, are easy to apply; But a little less than its inhibition, the caving-preventing ability, in some very easily collapse the stratum, use and to satisfy anti-collapse requirement.
Summary of the invention: the purpose of this invention is to provide a kind of secondary organic cationic polymer drilling fluid, this drilling fluid had both had the extremely strong inhibition of cationic polymer drilling fluid, can regulate and control performance with the treatment agent that present anionic polymer drilling fluid uses again, it is controlled to reach performance.Like this, just can form a kind of new polymer drilling fluid system with the sets of advantages of negatively charged ion and cationic polymer drilling fluid system in one.
Technical scheme of the present invention is: a kind of secondary organic cationic polymer drilling fluid is characterized in that: it mainly includes secondary organic cation and forms agent 0.2%～0.5% (weight in grams/100ml), polymkeric substance 0.2%～0.5% (weight in grams/100ml), fluid loss agent 0.3%～2.0% (weight in grams/100ml), water.
It is nitrogenous, sulphur, phosphorus compound and the compound of alkyl chloride effect formation that described secondary organic cation forms agent, and its effective content is 60～65%.
Described polymkeric substance is hydrolysis polyacrylamide PHP.
Described polymkeric substance is polyacrylic acid potassium KPAM.
Described fluid loss agent is coal tar or humic acids sulfonated bodies in no solid system, and content is 0.3～2.0%; Be treated starch, low sticking carboxymethyl cellulose in low-solid system, content is 0.1～1.0%.
Described secondary organic cationic polymer drilling fluid, it contains treatment agent, it comprises ethylene monomer copolymer PAC141, high sticking carboxymethyl cellulose HVCMC), hydroxyethyl or hydroxypropyl croak glue; Thinner sulfonation tannin SMT; Lubricant RT-988; Oily and available anionic emulsifier.
Described secondary organic cationic polymer drilling fluid also contains weighting agent, is limestone powder.Described weighting agent is a ground barium sulfate.
Characteristics of the present invention are: owing to polymer drilling fluid is to be referred to as additive (for example CSJ-1), common polymer and other required treatment agents of property regulation that secondary organic cation forms agent with a class to form.The present invention has provided the secondary organic cationic polymer drilling fluid of no solid phase and low solid content.Application result at more than 100 mouthfuls of dissimilar wells shows: this drilling fluid has strong inhibition, join the slurry performance good, help protecting advantages such as hydrocarbon zone, implementing process are simple.The purpose that can reach downhole safety, improves drilling speed, reduces cost.
The main composition of secondary organic cationic polymer drilling fluid of the present invention sees Table 1.
Table 1 secondary organic cationic polymer drilling fluid is mainly formed
| Component title and code name | No solid system dosage, % | The low-solid system dosage, % |
| Secondary organic cation forms agent CSJ-1) | ??0.2-0.5 | ????0.3-1.0 |
| Hydro-polyacrylamide (PHP) or polyacrylic acid potassium (KPAM) | ??0.2-0.5 ??0.2-0.5 | ???????- ????0.2-0.3 |
| Filtration property control agent (FL-1 etc.) wilkinite | ??0.5-2.0 ?????- | ????0.3-1.5 ????3.0-8.0 |
| Other treatment agent commonly used (as PAC series, SMK etc.) weighting agent | 0.1-1.0 on demand | 0.1-1.0 on demand |
Secondary organic cationic polymer in this drilling fluid forms agent be nitrogenous compound with the resultant of alkyl chloride reaction or with the salt of acid-respons generation, CSJ-1 belongs to a kind of among the former, it is a brown liquid, effective content 60～65%.Generally speaking, the effect that the nitrogen-containing group of reactant nitrogenous compound is many is more effective than what lack, but chooses in conjunction with cost and technical process operability; Used polymkeric substance is partial hydrolysis polyacrylamide PHP or polypropylene acid potassium KPAM commonly used in the drilling fluid in this drilling fluid, requires molecular weight 3 * 10
6More than, the water-soluble time was less than 2 hours; Filter loss control agent in this drilling fluid is the natural resin sulfonated bodies, also can be replaced by the sulfonated bodies of humic acid; Used wilkinite in this drilling fluid uses the one-level soil or the secondary soil that meet rower; Used other treatment agents in this drilling fluid are meant to meet GB or rower or the required treatment agent of enterprise's target.
The principal feature of secondary organic cationic polymer drilling fluid of the present invention is:
1, the inhibition caving-preventing ability is strong, and the anti-collapse technology of this drilling fluid is to use strong and effective, and has reactive CSJ-1, and it is anti-collapse to reach strong inhibition.
2, secondary organic cation formation agent (as CSJ-1) contains the formed non-ionic group based on nitrogen-atoms N, can be compatible well with positively charged ion, anionic polymer, and the very strong reactive behavior of tool.Except that itself having strong inhibition caving-preventing ability, under certain temperature and pH condition, can have an effect in the use with general common polymer treatment agent (as PAM, KPAM etc.), make their inhibition caving-preventing characteristic reach the same with cationic polymers.Cationic polymers in the existing cationic polymer drilling fluid is to become and add in factory process, and ' cationic polymers ' in the drilling fluid in use generates among this present invention, thereby is called the secondary organic cationic polymer drilling fluid.Simultaneously, in the landwaste dispersivity test, become blueness after simple CSJ-1 solution heat is rolled, illustrate with high-temperature tank on copper reaction (might form complex compound with cupric ion) has taken place; If add CSJ-1 in PHP or KPAM glue, system viscosity has the reduction phenomenon, and heat is rolled back solution and is colourless.Proved absolutely that CSJ-1 in use has reactivity, and preferentially with PHP or KPAM molecule (comparing with cupric ion) effect has taken place, generation has the recruit of strong inhibition group, thereby the inhibition caving-preventing ability of drilling fluid is strengthened greatly.
Table 2 is the relevant anti-collapse test-results of CSJ-1.As can be seen from Table 2, in 0.3%PHP solution, add CSJ-10.2～0.3% o'clock, can make straight sieve group shale primary recovery bring up to (rate of recovery in clear water is 8～10%) more than 90% by 35-45%, the secondary recovery rate is brought up to more than 85% by 15-20%, and the ratio of secondary and primary recovery is greater than 0.9.Through the roll back yield evaluation of indoor shale heat, its restraining effect is equivalent to the low molecular weight polycaprolactone quaternary amine, and the shale rate of recovery of this agent 0.5% aqueous solution is 50～70%, and secondary/primary recovery ratio is more than 0.95.It is not muddy that heat is rolled back liquid base fluid clarification, shows that this agent has suppressed the shale dispersion effectively.The CSJ-1 of dosage 0.2～0.3% and 10% KCl anti sloughing effectiveness are suitable, but the inhibition effect of KCl is interim, and the inhibition effect of CSJ-1 is nonvolatil.
Table 2 landwaste dispersivity test
| Test number | Prescription | ????R 40，％ | ??R 40，％ |
| ????1 | Clear water | ????8～10 | ????/ |
| ????2 | Clear water+0.3%PHP | ????35～45 | ????15～20 |
| ????3 | Clear water+0.5%CSJ-1 | ????66.20 | ????63.58 |
| ????4 | Clear water+0.3%PHP+0.2%CSJ-1 | ????97.30 | ????88.78 |
| ????5 | Clear water+0.3%PHP+0.3%CSJ-1 | ????99.70 | ????92.54 |
3, secondary organic cation forms agent CSJ-1 and by negative change just can make shale surface zeta-potential.As table 3 and table 4.Show in the secondary positively charged ion CSJ-1 treatment agent energy and the stratum clay mineral in negative charge, reduce the electric weight of stratum clay, suppress stratum clay mineral aquation and disperse to expand.This also is the major cause of CSJ-1 stabilizing borehole.
Table 3 PH=8 is the Zeta potential of straight sieve group shale under different CSJ-1 concentration
| CSJ-1 content | ?PH | ζ Measure mv | ?T，□ | ??SC | ??ζ Just imitate， ???? mv | ??ζ On average, mv |
| ????0％ | ??8 | ??-38.5 | ??13.6 | ??0.3 | ?-28.03 | ??-28.37 |
| ??-35.7 | ??9.8 | ??0.3 | ??28.70 | |||
| ????0.3％ | ??8 | ??-1.7 | ??10.8 | ??2.6 | ?-1.33 | ??-2.6 |
| ??-4.8 | ??9.7 | ??2.6 | ?-3.87 | |||
| ????0.5％ | ??8 | ??-0.08 | ??12.1 | ??2.8 | ?-0.61 | ??-0.31 |
| ???0 | ??10.7 | ??3.8 | ??0 | |||
| ????0.7％ | ??8 | ???8.0 | ??10.7 | ??5.1 | ??6.29 | ???6.27 |
| ???7.7 | ??9.5 | ??5.2 | ??6.24 | |||
| ????1％ | ??8 | ???7.0 | ??8.9 | ??4.5 | ??5.75 | ???6.87 |
| ???9.5 | ??8.0 | ??4.8 | ??7.89 |
Table 4 PH=8 is the Zeta potential of Fu County group shale under different CSJ-1 concentration
| CSJ-1 content | ?PH | ζ Measure mv | ?T，□ | ?SC | ζ Just imitate mv | ζ On average, mv |
| ????0％ | ??8 | ??-40.7 | ??12.8 | ?0.3 | ??-30.28 | ?-31.45 |
| ??-41.4 | ??10.6 | ?0.2 | ??-32.62 | |||
| ????0.3％ | ??8 | ??-9.0 | ??14.4 | ?2.6 | ??-6.41 | ?-5.30 |
| ??-5.6 | ??12.7 | ?2.6 | ??-4.18 | |||
| ????0.5％ | ??8 | ??-0.5 | ??11.6 | ?3.4 | ??-0.38 | ?-1.54 |
| ??-3.4 | ??10.5 | ?3.2 | ??-2.69 | |||
| ????0.7％ | ??8 | ???0.00 | ??7.3 | ?5.4 | ???0 | ??0.76 |
| ??+1.8 | ??7.7 | ?5.5 | ???1.52 | |||
| ??8 | ??+6.0 | ??10.8 | ?7 | ???4.70 | ??5.40 | |
| ??+7.4 | ??9.1 | ?6.9 | ???6.05 |
4, flocculation ability is strong: test-results adds very a spot of CSJ-1 as can be seen in no solid polymer drilling fluid system, the flocculating effect of its system is strengthened greatly.This keeps low density very favourable to drilling fluid.See Table 5 floc test data.
Table 5 floc test
| Test number | ????1 # | ????2 # | ????3 # |
| 2% bentonite slurry | ????175ml | ????175ml | ????175ml |
| ?0.1％PA ????M | ????75ml | ????75ml | ????75ml |
| ?CSJ-1 | ????0 | ????0.25ml(0.1％) | ????0.75ml(0.3％) |
| The flocculation volume | |||
| 5 minutes | ????17ml | ????100ml | ???? |
| 10 minutes | ????58ml | ????110ml | ????105ml |
| Describe | The upper strata is clear, fluffy | The upper strata is limpid, flocculation is agglomerating | The upper strata is limpid, flocculate into particulate state |
5, the controllability of performance.Based on the drilling fluid of strong rejection capability, as cationic polymer drilling fluid, its Properties Control is often very difficult, and drilling fluid of the present invention then can be controlled the drilling fluid over-all properties easily, also can not take place because of adding the anionic treatment agent inhibition to be weakened.
6, little to the payzone injury.As shown in Figure 1, its reflection rate of permeation recovery rate.
Accompanying drawing 1 is a core injury test figure.
Further specify composition and the performance and the effect of secondary organic cationic polymer drilling fluid provided by the present invention below in conjunction with example, but do not limit the present invention.
Example 1: by following component preparation no solid phase secondary organic cationic polymer drilling fluid (weight percent)
Clear water+0.2～0.3%PHP+0.3%CSJ-1+0.3～0.5%FL-1.Carrying sticking PAC141, the HV-CMC etc. of adopting all can.
Blending process: under stirring action, in a certain amount of clear water, add a certain amount of various treatment agent by proportioning.For example put into clear water 30 sides in 40 side's slurry commanding tanks, start stirrer and mixing hopper, add PHP/KPAM 60Kg, CSJ-1 90Kg, PAC141 90Kg, the continuation stirring is dissolved it fully and is got final product.
Example 2: by the low solid phase secondary organic cationic polymer drilling fluid (weight percent) of following component preparation
2～4% bentonite slurries+0.3～0.5%CSJ-1+0.3%FL-1+0.1～0.3%KPAM.Adopt PAC141, HV-CMC, FA-367 etc. and increase bentonite content and all can reach the effect that improves viscosity.
Blending process: under stirring action, in a certain amount of bentonite slurry, add a certain amount of various treatment agent by proportioning.For example in 40 side's slurry commanding tanks, put into clear water 30 sides, start stirrer and mixing hopper, add wilkinite 900Kg, left standstill aquation 24 hours, add KPAM 60Kg, CSJ-1 90Kg, FL-1 90Kg, PAC141 90Kg, HV-CMC60Kg again, the continuation stirring is dissolved it fully and is got final product.
The performance of example 1 and example 2 described drilling fluids and effect be Lie Gebiao as follows.
Table 6 secondary organic cationic polymer property of drilling fluid
| Drilling fluid | Property of drilling fluid | ||||||
| ??ρ，g/cm 3 | ??FV，s | ?PV，mPa.s | ?YP，Pa | API?FL，ml | ??pH | The landwaste rate of recovery, % | |
| Example 1 | ?1.00～1.01 | ?30～36 | ??2～7 | ?0.5～2 | ??＜20.0 | ?8～9 | ??88.6～92.7 |
| Example 2 | ?1.03～1.05 | ?40～60 | ??10～30 | ??3～8 | ??＜10.0 | ?9～10 | ??92.4～98.1 |
Annotate: ρ: density, FV: funnel viscosity, PV: plastic viscosity, YP: yield value, API FL: filter loss
Table 7 Yulin Prefecture test application data
| Drilling fluid | Pound sign | Rate of penetration m/h | Drilling period d | Full well diameter enlargement ratio % |
| The secondary organic cationic polymer drilling fluid | ?Y27-11 | ????6.00 | ????37 | ????12.67 |
| ?Y26-11 | ????6.09 | ????43 | ????11.62 | |
| ?Y26-12 | ????7.65 | ????27.5 | ????15.77 | |
| ?Y36-9 | ????7.09 | ????35 | ????23.30 | |
| The anionic polymer drilling fluid | ?Y28-12 | ????6.23 | ????36 | ????24.23 |
| ?Y35-8 | ????6.72 | ????37 | ????19.51 | |
Table 8 CSJ-1 strengthens throwing out test application data
| Pound sign | CSJ-1 dosage % | Use well depth m | Use the stratum | Performance before using | Use the back performance | ||
| ρ，g/cm 3 | ?FV，s | ?ρ，g/cm 3 | ?FV，s | ||||
| ?G36-7 | ????0.1 | ????1827 | Prolong | ????1.02 | ????29 | ????1.00 | ??29 |
| ?G36-6 | ????0.2 | ????1800 | Prolong | ????1.02 | ????30 | ????1.00 | ??31 |
| ?G35-9 | ????0.1 | ????1650 | Prolong | ????1.03 | ????31 | ????1.00 | ??31 |
| ?G35-6 | ????0.1 | ????2300 | The paper mill | ????1.02 | ????31 | ????1.00 | ??30 |
Table 9 is in small hole orientation well application data
| Year | Well number mouthful | The section of caving in diameter enlargement ratio % | Rate of penetration m/h | Construction cycle d | Electrical measurement one-time success rate % | |
| Straight sieve | The Fu County | |||||
| ?1998 | 7 (straight wells) | ??????????????50～60 | ????9.09 | ????23.5 | ????28.57 | |
| ?1999 | ????29 | ???＜10 | ????＜15 | ????9.30 | ????13.4 | ????75.86 |
| ?2000 | ????24 | ???＜10 | ????＜15 | ????11.42 | ????15.1 | ????81.25 |
Table 10 trough area test application data
| Drilling fluid | Pound sign | Well depth m | Drilling period d | Rate of penetration m/h | Diameter enlargement ratio % |
| The secondary organic cationic polymer drilling fluid | Wood 16-12 | ?1765 | ????7.67 | ??15.58 | ????11.00 |
| Wood 17-11 | ?1620 | ????7.83 | ??14.62 | ????13.94 | |
| Wood 17-12 | ?1640 | ????8.42 | ??14.66 | ????8.24 | |
| Cloudy polymer drilling fluid | Wood 15-13 | ?1715 | ????9.63 | ??13.5 | ????27.3 |
| Wood 14-13 | ?1675 | ????16.08 | ??14.56 | ????17.18 |
Table 11 is in area, Huachi test application data
| Pound sign | Finishing drilling well depth m | Drilling period d | Construction cycle d | Rate of penetration m/h | The electrical measurement situation | Drilling fluid |
| China 28-1 well | ????1104 | ????13d17h | ????33 | ????4.5 | Disclose 4 electrical measurements of well 7 days | Anionic polymer |
| China 28-2 well | ????1118 | ????11d22h | ????19 | ????6.99 | Electrical measurement is success once | Secondary organic cationic polymer |
Table 12 uses layer hole diameter statistics of caving at the gas water horizontal well
| Pound sign | Well | Cavey formation | Diameter enlargement ratio, % |
| Su Ping 1 well | The straight well section | Shi Qianfeng group～stone box group | ????3.92 |
| Lower curved section | Stone box group | ????4.35 | |
| Su Ping 2 wells | The straight well section | Shi Qianfeng group～stone box group | ????5.84 |
| Lower curved section | Stone box group | ????6.06 |
Table 13 drill core permeability rate recovery rate testing data
| Sequence number | Core number | Core injury rate, % | The rate of permeation recovery rate, % | The injury medium |
| ????1 | Revive No. 36,12 wells | ????33.56 | ????85.65 | Su Ping 1 Jing3474mJing slurry |
| ????2 | Revive No. 28,12 wells | ????27.56 | ????81.96 | Su Ping 1 Jing3507mJing slurry |
| ????3 | No. 1, Su Ping 2 wells | ????32.45 | ????89.29 | Su Ping 2 Jing3777mJing slurry |
| ????4 | No. 2, Su Ping 2 wells | ????48.32 | ????84.14 | Su Ping 2 Jing3648mJing slurry |
Comprehensive above-mentioned example and relevant data, secondary organic cationic polymer drilling fluid of the present invention is a kind of strong inhibition capability, join the good drilling fluid system of slurry property, it is another novel drilling fluid system that research and development gets up on negatively charged ion and cationic polymer drilling fluid system basis, available various water-base drilling fluid treatment agent is regulated required performance, is applicable to drilling operation under the multiple situation.
Claims (8)
1, a kind of secondary organic cationic polymer drilling fluid is characterized in that: it mainly includes secondary organic cation and forms agent 0.2%～0.5% (weight in grams/100ml), polymkeric substance 0.2%～0.5% (weight in grams/100ml), fluid loss agent 0.3%～2.0% (weight in grams/100ml), water.
2, a kind of secondary organic cationic polymer drilling fluid according to claim 1 is characterized in that: it is nitrogenous, sulphur, phosphorus compound and the compound of alkyl chloride effect formation that described secondary organic cation forms agent, and its effective content is 60～65%.
3, a kind of secondary organic cationic polymer drilling fluid according to claim 1 is characterized in that: described polymkeric substance is hydrolysis polyacrylamide PHP.
4, a kind of secondary organic cationic polymer drilling fluid according to claim 1, it is characterized in that: described polymkeric substance is polyacrylic acid potassium KPAM.
5, a kind of secondary organic cationic polymer drilling fluid according to claim 1 is characterized in that: described fluid loss agent is coal tar or humic acids sulfonated bodies in no solid system, and content is 0.3～2.0%; Be treated starch, low sticking carboxymethyl cellulose in low-solid system, content is 0.1～1.0%.
6, a kind of secondary organic cationic polymer drilling fluid according to claim 1, it is characterized in that: described secondary organic cationic polymer drilling fluid, it contains treatment agent, and it comprises ethylene monomer copolymer PAC141, high sticking carboxymethyl cellulose HVCMC), hydroxyethyl or hydroxypropyl croak glue; Thinner sulfonation tannin SMT; Lubricant RT-988; Oily and available anionic emulsifier.
7, a kind of secondary organic cationic polymer drilling fluid according to claim 1 is characterized in that: described secondary organic cationic polymer drilling fluid, also contain weighting agent, and be limestone powder.
8, a kind of secondary organic cationic polymer drilling fluid according to claim 1, it is characterized in that: described weighting agent is a ground barium sulfate.
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| CNA031145485A CN1530418A (en) | 2003-03-10 | 2003-03-10 | Secondary organic cationic polymer well drilling liquid |
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| CNA031145485A CN1530418A (en) | 2003-03-10 | 2003-03-10 | Secondary organic cationic polymer well drilling liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104059621A (en) * | 2014-06-17 | 2014-09-24 | 延长油田股份有限公司西区采油厂 | Anti-collapse drilling fluid and preparation method thereof |
| CN105199683A (en) * | 2014-06-20 | 2015-12-30 | 成都棕通石油配件有限公司 | Poly solid-free drilling fluid |
-
2003
- 2003-03-10 CN CNA031145485A patent/CN1530418A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104059621A (en) * | 2014-06-17 | 2014-09-24 | 延长油田股份有限公司西区采油厂 | Anti-collapse drilling fluid and preparation method thereof |
| CN105199683A (en) * | 2014-06-20 | 2015-12-30 | 成都棕通石油配件有限公司 | Poly solid-free drilling fluid |
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