CN104497998B - The organic salt emulsion drilling fluid and compound method of a kind of salt-resisting high-temperature-resisting - Google Patents
The organic salt emulsion drilling fluid and compound method of a kind of salt-resisting high-temperature-resisting Download PDFInfo
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- CN104497998B CN104497998B CN201510010690.3A CN201510010690A CN104497998B CN 104497998 B CN104497998 B CN 104497998B CN 201510010690 A CN201510010690 A CN 201510010690A CN 104497998 B CN104497998 B CN 104497998B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
Abstract
Present invention relates particularly to a kind of organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, by the material composition of following mass fraction：1000 parts of water, 2~3 parts of polyanion cellulose, ultra-fine 30~40 parts of mesh calcium carbonate, 20~30 parts of modified starch, 20~30 parts of sulfonated phenol formaldehyde resin, 30~40 parts of cationic emulsified bitumen powder, 20~30 parts of sodium formate, 1 part of NaOH.The present invention has salt-resisting high-temperature-resisting, effectively prevent the effect of organic salt component and bottom hole temperature (BHT) influence inorganic agent in drilling fluid from playing, it ensure that the rejection ability of drilling fluid, avoid the pulping of lower bottom mfs layer, it is effectively controlled the solid concentration in drilling fluid, the shortcomings of avoiding that bit balling, mechanical separator speed are low, slide slow, backing pressure when boring, compared with polysulfonate system, diameter enlargement ratio is reduced to 0.74% from 9.9%.
Description
Technical field
Present invention relates particularly to the organic salt emulsion drilling fluid and compound method of a kind of salt-resisting high-temperature-resisting.
Background technology
Long Dong gas fields target zone is generally Shanxi group, and finishing drilling well depth is more to undergo Shanxi in Cambrian system Xu Zhuan groups, drilling process
With Benxi Liang Ge stratum, all there is coal seam in the two stratum, to prevent collapsing for coal seam during Deal With Drilling Fluid.And start
" double rock layers " category Permian System of mud system is converted, stratum buried depth is about content of mudstone height in 3700m~4200m, stratum,
It is easy to aquation to disperse, shale or solid concentration in well is increased, while this well section is exactly in clear water polymer to completion fluid
Conversion, just conversion after property of drilling fluid it is poor, such as dehydration is big, filter cake is thick, inhibition is poor, greasy property it is poor all to brill when cause
Influence.
Chang Qing drilling wells parent company is for current Long Dong gas fields " double rock layers " and the stratum characteristic in Shanxi Benxi coal seam, with reference to rich
Rich situ of drilling well experience, has successfully found out a set of with " bentonite, sulfonated gilsonite powder, fluid loss agent, macromolecular polymeric
Sulphonated polymer mud technology based on thing, inhibitor anti-sloughing agent " etc..Because the inhibition ability is poor, cause system solid phase
Content is high, and mud cake is empty thick.Improve rejection ability to be accomplished by adding organic salt treatment agent, system dehydration can be caused to increase again, caused
Hole collapse.And the heat fusion joint of the sulfonated gilsonite powder in system is all at 70-80 DEG C, but the stratum well depth all 4000 meters with
On, bottom hole temperature (BHT) is all more than 100 DEG C, and common sulfonate materials do not realize the effect of oneself at all.Due to this of the system
A little not enough, it will to cause drilling fluid caving control ability, hole enlargement ratio big, solid concentration is high, and dehydration is unstable, power auger
Speed is low, slow during brill, PDC mud drums, the big poor lubricity of frictional resistance, occurs viscous card during slipping drilling.Once there is the borehole wall in Long Dong gas fields
Collapse and cause the consequence of well filling sidetracking.
The content of the invention
It is an object of the invention to provide a kind of organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, overcoming in existing drilling fluid has
Machine salt component and bottom hole temperature (BHT) influence the problem of each composition effect is played.
Therefore, the invention provides a kind of organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, by the thing of following mass fraction
Matter is constituted：1000 parts of water, 2~3 parts of polyanion cellulose, ultra-fine 30~40 parts of mesh calcium carbonate, 20~30 parts of modified starch, sulphur
Change 20~30 parts of phenolic resin, 30~40 parts of cationic emulsified bitumen powder, 20~30 parts of sodium formate, 1 part of NaOH.
The modified starch is GD-K modified starches, and sulfonated phenol formaldehyde resin is SMP-1 sulfonated phenol formaldehyde resins, and sodium formate is
WT-1 sodium formates, cationic emulsified bitumen powder is SFT-1 cationic emulsified bitumen powder.
The ultra-fine mesh calcium carbonate is more than 700 mesh.
Present invention also offers the compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, water is first added by the circulating cycle
1000 parts, it is 2~3 parts of polyanion cellulose, 20~30 parts of modified starch, 20~30 parts of sulfonated phenol formaldehyde resin, cation emulsified
1 part of 30~40 parts of asphalt powder and NaOH be after full and uniform 12 hours, adds 30~40 parts of ultra-fine mesh calcium carbonate and sodium formate 20
It is 1.06 ~ 1.10g/cm that density is measured after~30 parts of cycle balances3, the s of viscosity 38 ~ 45 and the ml of filter loss 4 ~ 6.
High pressure mixing funnel dosing, 800 ~ 1000 turns of diesel engine speed, discharge capacity 24 ~ 28 are used when each material mixing is uniform
L/s。
The present invention compared with prior art, with advantages below：
1）High temperature resistance：Compared with Sulphonated polymer mud system, the organic salt Emulsified drilling liquid of salt-resisting high-temperature-resisting of the invention
System has changed sulfonated gilsonite into emulsified asphalt, sulfonated gilsonite heat fusion joint（70-80℃）, and emulsified asphalt heat fusion joint（100-120
℃）There can be more preferable high temperature resistance effect, for well depth more than 4000 meters, well of the bottom hole temperature (BHT) more than 100 DEG C more can body
Reveal the high temperature resistance effect of the present invention；
2）Salt resistance：The Nacl that Sulphonated polymer mud system is added can produce Cl-, can be with other inorganic agents hair in drilling fluid
Life influences each other, and causes the solid concentration of drilling fluid to increase, and restraint is deteriorated, and the present invention is used as the system of raising using organic salt
The main inorganic agent of rejection ability, does not contain Cl-, other influences will not be produced for other inorganic agents so that each inorganic agent
It can play one's part to the full, thus with more preferable salt resistance effect；
3）Diameter enlargement ratio is reduced：Compared with polysulfonate system, diameter enlargement ratio is reduced to 0.74% from 9.9%.
Embodiment
Embodiment 1
The organic salt emulsion drilling fluid of a kind of salt-resisting high-temperature-resisting, by the material composition of following mass fraction：1000 parts of water, gathers
2 parts of anionic cellulose, ultra-fine 30 parts of mesh calcium carbonate, 20 parts of modified starch, 20 parts of sulfonated phenol formaldehyde resin, cationic emulsified bitumen
30 parts of powder, 20 parts of sodium formate, 1 part of NaOH.
The compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, first added by the circulating cycle 1000 parts of water, it is poly- cloudy from
1 part of 2 parts of subbundle element, 20 parts of modified starch, 20 parts of sulfonated phenol formaldehyde resin, 30 parts of cationic emulsified bitumen powder and NaOH are fully
After uniform 12 hours, add measurement density after 30 parts of ultra-fine mesh calcium carbonate and 20 parts of cycle balances of sodium formate be 1.06 ~
1.10g/cm3, the s of viscosity 38 ~ 45 and the ml of filter loss 4 ~ 6.Wherein, high pressure mixing funnel is used when each material mixing is uniform
Dosing, 800 ~ 1000 turns of diesel engine speed, the L/s of discharge capacity 24 ~ 28.
Embodiment 2
In order to overcome organic salt component and bottom hole temperature (BHT) in existing drilling fluid to influence the problem of each composition effect is played, this reality
The organic salt emulsion drilling fluid that example provides a kind of salt-resisting high-temperature-resisting is applied, by the material composition of following mass fraction：1000 parts of water,
2 parts of polyanion cellulose, ultra-fine 30 parts of mesh calcium carbonate, 20 parts of modified starch, 20 parts of sulfonated phenol formaldehyde resin, cation emulsified drip
Blue or green 30 parts of powder, 20 parts of sodium formate, 1 part of NaOH.
Used in the present embodiment：Modified starch model GD-K modified starches, manufacturer is the wide petrochemical industry of Dongying
Company, sulfonated phenol formaldehyde resin model SMP-1 sulfonated phenol formaldehyde resins, manufacturer is the emerging chemical plant in Henan, sodium formate model
For WT-1 sodium formates, manufacturer is long celebrating Liquan chemical plant, the cation emulsified drips of cationic emulsified bitumen powder model SFT-1
Blue or green powder, manufacturer is Henan Golden Horse chemical plant, and ultra-fine mesh calcium carbonate model ZDS, mesh number is more than 700 mesh manufacturers
For long celebrating Liquan chemical plant.
The compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, first added by the circulating cycle 1000 parts of water, it is poly- cloudy from
1 part of 2 parts of subbundle element, 20 parts of modified starch, 20 parts of sulfonated phenol formaldehyde resin, 30 parts of cationic emulsified bitumen powder and NaOH are fully
After uniform 12 hours, add measurement density after 30 parts of ultra-fine mesh calcium carbonate and 20 parts of cycle balances of sodium formate be 1.06 ~
1.10g/cm3, the s of viscosity 38 ~ 45 and the ml of filter loss 4 ~ 6.Wherein, high pressure mixing funnel is used when each material mixing is uniform
Dosing, 800 ~ 1000 turns of diesel engine speed, the L/s of discharge capacity 24 ~ 28.
Embodiment 3
The organic salt emulsion drilling fluid for the salt-resisting high-temperature-resisting that the present embodiment is provided, by the material composition of following mass fraction：
1000 parts of water, 2.5 parts of polyanion cellulose, ultra-fine 36 parts of mesh calcium carbonate, 25 parts of modified starch, 25 parts of sulfonated phenol formaldehyde resin,
35 parts of cationic emulsified bitumen powder, 25 parts of sodium formate, 1 part of NaOH.
Modified starch model GD-K modified starches in the present embodiment, manufacturer is the wide petro-chemical corporation of Dongying, sulfonation
Phenolic resin model is SMP-1 sulfonated phenol formaldehyde resins, and manufacturer is the emerging chemical plant in Henan, sodium formate model WT-1 formic acid
Sodium, manufacturer is long celebrating Liquan chemical plant, cationic emulsified bitumen powder model SFT-1 cationic emulsified bitumen powder, production
Producer is Henan Golden Horse chemical plant, and ultra-fine mesh calcium carbonate model ZDS, mesh number is that more than 700 mesh, manufacturer is long celebrating Liquan
Chemical plant.
The compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, first added by the circulating cycle 1000 parts of water, it is poly- cloudy from
1 part of 2.5 parts of subbundle element, 25 parts of modified starch, 25 parts of sulfonated phenol formaldehyde resin, 35 parts of cationic emulsified bitumen powder and NaOH fill
After points uniform 12 hours, add measurement density after 36 parts of ultra-fine mesh calcium carbonate and 25 parts of cycle balances of sodium formate be 1.06 ~
1.10g/cm3, the s of viscosity 38 ~ 45 and the ml of filter loss 4 ~ 6.Wherein, high pressure mixing funnel is used when each material mixing is uniform
Dosing, 800 ~ 1000 turns of diesel engine speed, the L/s of discharge capacity 24 ~ 28.
Embodiment 4
The organic salt emulsion drilling fluid for the salt-resisting high-temperature-resisting that the present embodiment is provided, by the material composition of following mass fraction：
1000 parts of water, 3 parts of polyanion cellulose, ultra-fine 40 parts of mesh calcium carbonate, 30 parts of modified starch, 30 parts of sulfonated phenol formaldehyde resin, sun
40 parts of ion emulsified asphalt powder, 30 parts of sodium formate, 1 part of NaOH.
Modified starch model GD-K modified starches in the present embodiment, manufacturer is the wide petro-chemical corporation of Dongying, sulfonation
Phenolic resin model is SMP-1 sulfonated phenol formaldehyde resins, and manufacturer is the emerging chemical plant in Henan, sodium formate model WT-1 formic acid
Sodium, manufacturer is long celebrating Liquan chemical plant, cationic emulsified bitumen powder model SFT-1 cationic emulsified bitumen powder, production
Producer is Henan Golden Horse chemical plant, and ultra-fine mesh calcium carbonate model ZDS, mesh number is that more than 700 mesh, manufacturer is long celebrating Liquan
Chemical plant.
The compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting, first added by the circulating cycle 1000 parts of water, it is poly- cloudy from
1 part of 3 parts of subbundle element, 30 parts of modified starch, 30 parts of sulfonated phenol formaldehyde resin, 40 parts of cationic emulsified bitumen powder and NaOH are fully
After uniform 12 hours, add measurement density after 40 parts of ultra-fine mesh calcium carbonate and 30 parts of cycle balances of sodium formate be 1.06 ~
1.10g/cm3, the s of viscosity 38 ~ 45 and the ml of filter loss 4 ~ 6.Wherein, high pressure mixing funnel is used when each material mixing is uniform
Dosing, 800 ~ 1000 turns of diesel engine speed, the L/s of discharge capacity 24 ~ 28.
The mechanism of action of the present invention：
Polyanion cellulose（Abbreviation PAC）Viscosifying action is had concurrently while coating inhibitory action is played, with certain
Salt resistance calcium ability；GD-K modified starches all have preferably shield glue energy as fluid loss agent in fresh water or salt-water drilling fluid
Power, can improve the yield value in brine system of mud, can also form thin and compact mud cake, filter loss is greatly lowered simultaneously
Improve the toughness of mud cake；The present invention is using the strong sulfonated phenol formaldehyde resin of temperature resistance ability（Model SMP-1）And cationic emulsified bitumen
Powder（Model SFT-1）Effectively to control the dehydration in drilling fluid, SFT-1 cationic emulsified bitumen powder belongs to emulsified asphalt, compared
There is higher heat fusion joint compared with sulfonated gilsonite powder, 40-50 DEG C is higher by, thus possess more preferable high-temperature resistance, can be abundant
Meet the well depth needs in Long Dong gas fields；The increase of organic salt formic acid sodium content in system, causes body series drilling fluid to have extremely low
Solid phase, higher salinity and strong inhibition, the aquation for overcoming mud stone is disperseed, while GD-K modified starches and ZDS are super
Compressible soft particle and rigid particles that detailed catalogue calcium carbonate is provided as diverting agent, form thin and compact in the presence of positive differential pressure
Mud cake, can effectively be prevented in drilling process because the influence of salinity and shaft bottom high temperature in system causes inorganic agent to lose effect
With, cause dehydration big, it is slow during brill, grind resistance greatly, hole collapse.
Due to based on mud stone, being extruded to form rock by drilling tool to prevent bit balling and landwaste more than the well section of bottom
Consider cake parcel drilling tool increase frictional resistance etc. to be worth doing, add organic salt heavy weight additive sodium formate（WT-1）, improve the coating rejection ability of system.By
Water is dissolved in neutrality in sodium formate, does not interfere with the pH value of drilling fluid, and the heat fusion joint of sodium formate is at 253 DEG C, complete gas field
Shaft bottom high temperature, therefore sodium formate is added in drilling fluid do not interfere with inorganic agent and play a role, so as to embody the salt resistance of the system
Ability.
Specific construction process：
Step 1）It is anti-collapse：Block drilling liquid technology measure is performed before mud conversion, the anti-collapse of full well section, it is ensured that well
The emphasis that eye rule works as drilling fluid, it is desirable to which top well section MDIA expands control within 10%, maximum caliper expansion
Control is within 15%；
Step 2）In the case of normal in top well section underground, 1000 parts of water, polyanion fiber are first added by the circulating cycle
2~3 parts of element, 20~30 parts of modified starch, 20~30 parts of sulfonated phenol formaldehyde resin, 30~40 parts of cationic emulsified bitumen powder and NaOH
1 part after full and uniform 12 hours, measured after adding 30~40 parts of ultra-fine mesh calcium carbonate and 20~30 parts of cycle balances of sodium formate
Density is 1.06 ~ 1.10g/cm3, the s of viscosity 38 ~ 45 and the ml of filter loss 4 ~ 6；
Step 3）In the case of abnormal in underground, the sulphur mud of 40 side's carclazyte three must be matched somebody with somebody in conversion
The sand do not taken out of in pit shaft is cleaned, the dosage of carclazyte will control to be no more than in the range of 3% in total mud amount,
The prop-carrying capacity for further improving mud will be by adding such as the 1-1.5% GD-K modified starches of the sulphur mud gross mass of 40 side's carclazyte three
Realized with 0.0625-0.125% xanthans, the relative molecular mass of xanthans is 2 × 106-1.2×107, manufacturer is
Shandong Zibo chemical plant.
In drilling process, API is can control using the organic salt emulsion drilling fluid of embodiment 2, embodiment 3, embodiment 4（API
Filter loss is at normal temperatures and 690KPa（100psi）Pressure under determine, the time be 7 points 30 seconds, be as a result multiplied by 2）Filter loss
Less than 6 ml, using shielding plugging anti-sloughing technique, the integrality of the caving ground borehole wall and the caving-preventing ability of drilling fluid are improved, it is high
Filter loss is in below 15ml under warm high pressure.
Various embodiments of the present invention prepare organic salt emulsion drilling fluid compared with polysulfonate system, diameter enlargement ratio from
9.9% is reduced to 0.74%, the results are shown in Table 1.
Table 1 celebrates 1-8-59 and celebrating 1-10-64 bore hole hole diameter data comparisons
From celebrating in terms of 1-8-59 wells, occur serious cave in again using Sulphonated polymer mud system " double rock layers " when the well is crept into
Miscellaneous, logging blocking, maximum hole enlargement ratio reaches 34.6%, diameter enlargement ratio 9.9%.Celebrate 1-10-64 wells anti-using salt resistance
After high temperature composite salt system, underground is normal, and " double rock layers ", Shanxi group, Benxi group leader coal seam do not cave in.Finishing drilling electrical measurement is once
Success, hole diameter rule map, diameter enlargement ratio only has 0.74%.Drilling fluid system can be by polymeric system or the sulphur of salt resistance three
System is directly changed, and is converted after performance stabilization, is only needed to carry out regular maintenance in drilling process, if without the complicated feelings in underground
Condition, it is not necessary to which significantly adjustment is handled.
Table 2 celebrates 1-10-64 undergrounds portion well section property of drilling fluid record sheet
Drilling fluid system can directly be changed by polymeric system or the sulphur system of salt resistance three, be converted after performance stabilization,
Only need to carry out regular maintenance in drilling process, if without down hole problem, it is not necessary to which significantly adjustment is handled.Embodiment 1
Effect and embodiment 2-4 are basically identical, and embodiment 2-4 is more better.
The part that the present embodiment is not specifically described belongs to the common knowledge and known technology of the art, herein not
Another one describes in detail.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (3)
1. the organic salt emulsion drilling fluid of a kind of salt-resisting high-temperature-resisting, it is characterised in that by the material composition of following mass fraction：Water
1000 parts, 2~3 parts of polyanion cellulose, ultra-fine 30~40 parts of mesh calcium carbonate, 20~30 parts of modified starch, sulfonated phenolic tree
20~30 parts of fat, 30~40 parts of cationic emulsified bitumen powder, 20~30 parts of sodium formate, 1 part of NaOH；
The modified starch is GD-K modified starches, and sulfonated phenol formaldehyde resin is SMP-1 sulfonated phenol formaldehyde resins, and sodium formate is WT-1 first
Sour sodium, cationic emulsified bitumen powder is SFT-1 cationic emulsified bitumen powder, and the ultra-fine mesh calcium carbonate is more than 700 mesh.
2. a kind of compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting according to claim 1, its feature exists
In：1000 parts of water, 2~3 parts of polyanion cellulose, 20~30 parts of modified starch, sulfonated phenol formaldehyde resin are first added by the circulating cycle
1 part of 20~30 parts, 30~40 parts of cationic emulsified bitumen powder and NaOH add ultra-fine mesh carbonic acid after full and uniform 12 hours
Measurement density is 1.06 ~ 1.10g/cm after 30~40 parts of calcium and 20~30 parts of cycle balances of sodium formate3, the s of viscosity 38 ~ 45 and filter
The ml of vector 4 ~ 6.
3. a kind of compound method of the organic salt emulsion drilling fluid of salt-resisting high-temperature-resisting according to claim 2, its feature exists
In：High pressure mixing funnel dosing, 800 ~ 1000 turns of diesel engine speed, the L/s of discharge capacity 24 ~ 28 are used when each material mixing is uniform.
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| CN105255459A (en) * | 2015-10-29 | 2016-01-20 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Environment-friendly chlorine-free drilling fluid and preparation method thereof |
| CN106753286A (en) * | 2016-12-09 | 2017-05-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | A kind of viscous low solid phase environmental protection drilling fluid high and preparation method thereof |
| CN109652032B (en) * | 2019-01-22 | 2021-08-03 | 北京宏勤石油助剂有限公司 | Mud cake toughening modifier for drilling fluid and preparation method thereof |
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Inventor after: Nie Zhen Inventor after: Zhao Furong Inventor after: Lu Xiao Inventor after: Zhang Jianqing Inventor after: Wu Shenghong Inventor before: Nie Zhen Inventor before: Zhao Furong Inventor before: Lu Xiao Inventor before: Zhang Jianqing Inventor before: Wu Shenghong |
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