CN103013475A - Maintenance method of synthetic base drilling fluid - Google Patents
Maintenance method of synthetic base drilling fluid Download PDFInfo
- Publication number
- CN103013475A CN103013475A CN2012105795538A CN201210579553A CN103013475A CN 103013475 A CN103013475 A CN 103013475A CN 2012105795538 A CN2012105795538 A CN 2012105795538A CN 201210579553 A CN201210579553 A CN 201210579553A CN 103013475 A CN103013475 A CN 103013475A
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- base drilling
- synthetic base
- belong
- agent
- 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.)
- Pending
Links
Abstract
The invention discloses a maintenance method of a synthetic base drilling fluid, belonging to the technical field of petroleum and gas synthetic base drilling fluid development. According to the maintenance method, the moisture content of the synthetic base drilling fluid is controlled in the range of 10%-15% during maintenance treatment, the synthetic base drilling fluid is maintained at containing 4.0%-6.0% of filtrate-loss reducer and 2.0-3.0% of anti-sloughing blocking agent according to the total mass percentages of the drilling fluid, and high temperature and high pressure filter loss in the drilling fluid is controlled to be less than 6ml. The synthetic base drilling fluid maintained by adopting the maintenance method has the characteristics of strong anti-sloughing inhibition capability, good salt and calcium erosion resistance performance and obvious lubrication performance.
Description
Technical field
The present invention is used for the drilling engineering of deep-well, ultra deep well, exceptional well, Holes of Complicated Wells and shale gas well, belongs to oil and gas synthetic base drilling fluid Extended Technology field.
Background technology
Along with Exploration Domain constantly enlarges, deep-well, ultra deep well, exceptional well and Holes of Complicated Wells constantly increase, and no matter are domestic or external, and all gradually to deep formation and marine development, the drilling strata condition is day by day complicated for petroleum exploration and development, and drilling depth constantly increases.In recent years; along with horizontal well, process well, underbalance well quantity increase; the drilling well difficulty is increasing; particularly run into strong water-sensitive strata; creep into water-base drilling fluid and easily to cause hole collapse, therefore existing water-base drilling fluid technology can't satisfy smoothly drilling well needs of safety under many circumstances, especially at horizontal well; high temperature deep well, the aspects such as reservoir protection.
Publication number is CN1660958, and the Chinese patent literature that open day is on August 31st, 2005 discloses a kind of synthetic base drilling fluid, is mixed into by basal liquid, primary emulsion, auxiliary emulsifying agent, wetting agent, flow pattern regulator, fluid loss agent, organophilic clay; This basal liquid is by base fluid and CaCl
2The aqueous solution forms, and wherein, the base fluid weight percent is 75% to 90%, and all the other are CaCl
2The aqueous solution; The weight percent that primary emulsion accounts for basal liquid is 2% to 7%; The weight percent that auxiliary emulsifying agent accounts for basal liquid is 2% to 7%; The weight percent that wetting agent accounts for basal liquid is 1.5% to 4%; The weight percent that flow pattern regulator accounts for basal liquid is 1.0% to 3.5%; The weight percent that fluid loss agent accounts for basal liquid is 2% to 5%; The weight percent that organophilic clay accounts for basal liquid is 2.0% to 3.5%; For the new-type mortar system of contrary emulsification suspended dispersed system, be the mud system that reservoir could be accepted and protect to environment, toxicity is little, and is biodegradable, can use at cold district and deep water sea area, little to formation damage; Use its well-drilling borehole stable, cleaning performance is good.
But along with the conventional gas resource is constantly exhausted, the unconventional gas resourcess such as shale gas are just becoming the exploitation focus.China's shale gas reservoir stock number is abundant, many mouthfuls of pre-pilots from the present Sichuan Basin, the principal feature of shale is easily to collapse, synthetic base drilling fluid take above-mentioned patent documentation as representative suppresses ability, synthetic base drilling fluid easily causes the hydration swelling of shale, so can not effectively solve the borehole collapse difficult problem in shale gas prospect pit and the exploitation well drilling process.
Summary of the invention
For solving the existing technical problem of above-mentioned prior art, the present invention proposes a kind of maintaining method of synthetic base drilling fluid, the drilling fluid that adopts this maintaining method to safeguard has that anti-collapse strong inhibition capability, salt resistance performance are good, the obvious characteristics of lubricity.
The present invention is by adopting following technical proposals to realize:
The maintaining method of synthetic base drilling fluid is characterized in that: safeguarding that the water content of controlling when processing in the synthetic base drilling fluid is between 10%～15%.
Further, in the mass percent in the whole drilling fluid, keep the content of synthetic base between 60～70%, keep the content of primary emulsion between 3.0%～5.0%, keep the content of auxiliary emulsifying agent between 2.0%～4.0%, keep simultaneously emulsion-breaking voltage and be higher than 400V;
Further, in the mass percent in the whole drilling fluid, 4.0%～6.0% fluid loss agent content and 2.0%～3.0% anti-collapse plugging agent content in the maintenance synthetic base drilling fluid, high temperature and high pre ssure filtration is less than 6ml in the control drilling fluid;
Further, in volume percent, sand content is less than 0.2% in the control synthetic base drilling fluid, and solid load is less than 30%, and vibratory screening apparatus adopts more than or equal to 120 purpose detailed catalogue wire screen, regularly uses whizzer, removes harmful solid phase, the cleaning drilling fluid.
Described synthetic base drilling fluid is mixed by the raw material of following weight per-cent: 60～70% synthetic base; 2.0%～4.0% organophilic clay; 3.0%～5.0% primary emulsion; 2.0%～4.0% auxiliary emulsifying agent; 0.1%～0.2% wetting agent; 0.5%～2.0% flow pattern regulator; 2.0%～3.0% CaO; 10%～15% CaCl
2The aqueous solution; 4.0%～6.0% fluid loss agent and 2.0%～3.0% anti-collapse plugging agent.
Described anti-collapse plugging agent is the oil base drilling fluid plugging agent of being made by oil-soluble resin, rigid particles, surfactant compound, belong to prior art, its oil base drilling fluid plugging agent Resin adhesive bundle of particle (ZCY-STAB) entirely by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described synthetic base is linear paraffin base fluid, belongs to prior art, is can be directly at the raw material of buying on the market.
Described organophilic clay is to react a kind of oleophylic colloid that makes by organic modifiers by sodium soil, belongs to prior art, can directly buy to obtain on Chemical market.
Described primary emulsion be take unsaturated fatty acids as main raw material(s), alkylamine is auxiliary material, synthetic oil base drilling fluid primary emulsion alkanoic acid acid amides, belong to prior art, full oil base drilling fluid primary emulsion alkanoic acid acid amides (ZCY-PEMUL) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described auxiliary emulsifying agent is as starting material take lipid acid, alcohols, the oil base drilling fluid that generates through the esterification building-up reactions is with auxiliary emulsifying agent fatty acid ester, belong to prior art, complete by name oil base drilling fluid is with auxiliary emulsifying agent fatty acid ester (ZCY-SMUL), belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described wetting agent is the oil base drilling fluid wetting agent quaternary ammonium salt of being made by the straight chain quaternary amine of C12～C18 and alkyl halide building-up reactions, belong to prior art, full oil base drilling fluid wetting agent quaternary ammonium salt (ZCY-WET) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described flow pattern regulator is to be raw material by stearyl methacrylate, maleic anhydride, vinylbenzene, react the oil base drilling fluid flow pattern regulator oil-soluble polymers of making by terpolymer, belong to prior art, full oil base drilling fluid flow pattern regulator oil-soluble polymers (ZCY-RMOD) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Fluid loss agent is as main raw take resin, pitch, through the oil base drilling fluid of chemosynthesis fluid loss agent resin asphalt, belong to prior art, full oil base drilling fluid fluid loss agent sulfate resin (ZCY-FTROL) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described CaCl
2The mass concentration of the aqueous solution is 20%.
Compared with prior art, the beneficial effect that reaches of the present invention is as follows:
1, among the present invention, adopt " safeguarding that the water content in the control synthetic base drilling fluid is between 10%～15% when processing " such maintaining method, can in lower cost control, keep drilling fluid preferably rheological property with keep higher emulsion-breaking voltage value.
2, through experiment showed, the maintaining method that the present invention is designed, because emulsion-breaking voltage is higher than 400V, emulsify well, property of drilling fluid is stable; Filtrate reducer for drilling fluid content 4.0%～6.0%, anti-collapse plugging agent content maintains 2.0%～3.0%, can effectively control the filter loss of drilling fluid high-temperature high pressure, reaches the technique effect that collapses of prevention mud shale; Sand content is less than 0.2%; solid load is less than 30%; vibratory screening apparatus detailed catalogue wire screen is more than or equal to 120 orders; and regularly use whizzer; can effectively control the solid phase in the drilling fluid, keep the quality of drilling fluid, therefore; this drilling fluid composition has stronger anti-collapse inhibition, salt resistance, oilness and good reservoir protection performance, simultaneously this drilling fluid emulsify well.
3, among the present invention, related by " 60～70% synthetic base; 2.0%～4.0% organophilic clay; 3.0%～5.0% primary emulsion; 2.0%～4.0% auxiliary emulsifying agent; 0.1%～0.2% wetting agent; 0.5%～2.0% flow pattern regulator; 2.0%～3.0% CaO; 10%～15% CaCl
2The aqueous solution; 4.0%～6.0% fluid loss agent and 2.0%～3.0% anti-collapse plugging agent " synthetic base drilling fluid that mixes; be that the CN1660958 patent documentation is compared with publication number; on the one hand; increased anti-collapse plugging agent; can form plugged zone at the shale borehole wall; suppress shale and collapse; reduce the down-hole complicated; on the other hand; through repetition test; the present invention has determined each component prescription of above-mentioned specific proportion relation; formed synthetic base drilling fluid; rolling constant temperature is 16 hours under 100 ℃ condition; taking-up is tested under 50 ℃ environment; test result shows; the drilling mud of the present invention's prescription is having good result aspect the indexs such as rheological property and extreme boundary lubrication coefficient; evaluation experimental to prescription shows; after adding salt and gypsum in the prescription, on the performance of drilling fluid substantially without affecting the shale that adds in the prescription and wilkinite; show extremely strong anti-collapse rejection; therefore, this drilling fluid composition has stronger anti-collapse inhibition; salt resistance; oilness and good reservoir protection performance, simultaneously this drilling fluid emulsify well; the emulsion-breaking voltage value is higher than 600V, and test result is referring to embodiment.
Description of drawings
Fig. 1 is synthetic base drilling fluid and clear water contrast rate of expansion graphic representation
Embodiment
Embodiment 1
As a preferred application example of the present invention, main application is take synthetic base as the synthetic base drilling fluid that main raw material forms in the shale gas exploitation of Changning, Sichuan block, consists of drilling fluid composition of the present invention and is:
The 70% synthetic base+3.0% organophilic clay+auxiliary emulsifying agent of 3.0% primary emulsion+3.0%+0.1% wetting agent+0.9% flow pattern regulator+2.0%CaO+10%CaCl
2The aqueous solution+anti-collapse the plugging agent of 5.0% fluid loss agent+3.0%; (CaCl wherein
2The mass concentration of the aqueous solution is 20%).
The conventional blending means of above-mentioned prescription in the drilling fluid field forms synthetic base drilling fluid, in the whole use procedure of shale gas well, this drilling fluid has that the inhibition ability is strong, stable performance, well cleaning, wellbore stability, frictional resistance is little, easy to maintenance, without any down-hole complex accident, improved simultaneously rate of penetration.
Safeguarding that the water content of controlling when processing in the synthetic base drilling fluid is between 10%～15%.Adopt " safeguarding that the water content in the control synthetic base drilling fluid is between 10%～15% when processing " such maintaining method, can in lower cost control, keep drilling fluid preferably rheological property with keep higher emulsion-breaking voltage value.
Embodiment 2
As another preferred application example of the present invention, what the shell project was rich and smooth in Sichuan, the gold autumn block is mainly used is take synthetic base as the synthetic base drilling fluid that main raw material forms, and consists of drilling fluid composition of the present invention and is:
The 65% synthetic base+4.0% organophilic clay+auxiliary emulsifying agent of 4.0% primary emulsion+3.0%+0.1% wetting agent+0.9% flow pattern regulator+2.0%CaO+12%CaCl
2The aqueous solution+anti-collapse the plugging agent of 6.0% fluid loss agent+3.0%; (CaCl wherein
2The mass concentration of the aqueous solution is 20%).
The conventional blending means of above-mentioned prescription in the drilling fluid field forms synthetic base drilling fluid, and in crept into the shale bed, the down-hole occured without the phenomenon that collapses, and each short or make a trip that to connect column all unblocked, once on earth.This well trip-out friction resistance 30kN～50kN, lower brill friction resistance 20kN～30kN.
Safeguarding that the water content of controlling when processing in the synthetic base drilling fluid is between 10%～15%.Adopt " safeguarding that the water content in the control synthetic base drilling fluid is between 10%～15% when processing " such maintaining method, can in lower cost control, keep drilling fluid preferably rheological property with keep higher emulsion-breaking voltage value.
Embodiment 3
As preferred forms of the present invention, the invention discloses a kind of maintaining method of synthetic base drilling fluid, safeguarding that the water content of controlling when processing in the synthetic base drilling fluid is between 10%～15%.Further, in the mass percent in the whole drilling fluid, keep the content of synthetic base between 60～70%, keep the content of primary emulsion between 3.0%～5.0%, keep the content of auxiliary emulsifying agent between 2.0%～4.0%, keep simultaneously emulsion-breaking voltage and be higher than 400V; Further, in the mass percent in the whole drilling fluid, 4.0%～6.0% fluid loss agent content and 2.0%～3.0% anti-collapse plugging agent content in the maintenance synthetic base drilling fluid, high temperature and high pre ssure filtration is less than 6ml in the control drilling fluid; Further, in volume percent, sand content is less than 0.2% in the control synthetic base drilling fluid, and solid load is less than 30%, and vibratory screening apparatus adopts more than or equal to 120 purpose detailed catalogue wire screen, regularly uses whizzer, removes harmful solid phase, the cleaning drilling fluid.
And related synthetic base drilling fluid in this example is mixed by the raw material of following weight per-cent: 65% synthetic base; 3% organophilic clay; 4% primary emulsion; 3% auxiliary emulsifying agent; 0.2% wetting agent; 1.8% flow pattern regulator; 2.5% CaO; 12.5% CaCl
2The aqueous solution; 5% fluid loss agent and 3% anti-collapse plugging agent.
Described anti-collapse plugging agent is the oil base drilling fluid plugging agent of being made by oil-soluble resin, rigid particles, surfactant compound, belong to prior art, its oil base drilling fluid plugging agent Resin adhesive bundle of particle (ZCY-STAB) entirely by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described synthetic base is linear paraffin base fluid, belongs to prior art, is can be directly at the raw material of buying on the market.
Described organophilic clay is to react a kind of oleophylic colloid that makes by organic modifiers by sodium soil, belongs to prior art, can directly buy to obtain on Chemical market.
Described primary emulsion be take unsaturated fatty acids as main raw material(s), alkylamine is auxiliary material, synthetic oil base drilling fluid primary emulsion alkanoic acid acid amides, belong to prior art, full oil base drilling fluid primary emulsion alkanoic acid acid amides (ZCY-PEMUL) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described auxiliary emulsifying agent is as starting material take lipid acid, alcohols, the oil base drilling fluid that generates through the esterification building-up reactions is with auxiliary emulsifying agent fatty acid ester, belong to prior art, complete by name oil base drilling fluid is with auxiliary emulsifying agent fatty acid ester (ZCY-SMUL), belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described wetting agent is the oil base drilling fluid wetting agent quaternary ammonium salt of being made by the straight chain quaternary amine of C12～C18 and alkyl halide building-up reactions, belong to prior art, full oil base drilling fluid wetting agent quaternary ammonium salt (ZCY-WET) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described flow pattern regulator is to be raw material by stearyl methacrylate, maleic anhydride, vinylbenzene, react the oil base drilling fluid flow pattern regulator oil-soluble polymers of making by terpolymer, belong to prior art, full oil base drilling fluid flow pattern regulator oil-soluble polymers (ZCY-RMOD) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Fluid loss agent is as main raw take resin, pitch, through the oil base drilling fluid of chemosynthesis fluid loss agent resin asphalt, belong to prior art, full oil base drilling fluid fluid loss agent sulfate resin (ZCY-FTROL) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Described CaCl
2The mass concentration of the aqueous solution is 20%.
Rolling constant temperature is 16 hours under 100 ℃ condition, takes out to test under 50 ℃ environment, and test result shows, the drilling mud of the present invention's prescription is having good result aspect the indexs such as rheological property and extreme boundary lubrication coefficient.
1, the fundamental property of prescription is as shown in table 1:
2, the anti-salt property of prescription is estimated as shown in table 2:
The shown result of table 2 shows that 10% salt pollution property of drilling fluid is substantially unchanged.
3, the anticalcium performance evaluation of prescription is as shown in table 3:
The shown result of table 3 shows that 3% gypsum pollutes the property of drilling fluid variation not quite.
4, the anti-collapse rejection evaluation of prescription
(1) rate of recovery experiment
The rate of recovery 99.46% of synthetic base drilling fluid.
(2) inhibition wilkinite dispersion experiment is as shown in table 4:
(3) core rate of expansion experiment
Referring to present specification accompanying drawing 1, the shown result of table 4 and Fig. 1 shows that drilling fluid has stronger anti-collapse inhibition ability.
5, the Evaluation of Lubrication of prescription
Adopting the handle type frictionmeter to record the frictional coefficient of synthetic base drilling fluid behind 120 ℃ of rolling 16h is 0.0169.Experimental result shows that synthetic base drilling fluid has good lubricity.
Synthetic base drilling fluid rig-site utilization Technology:
1, drilling fluid preparation:
1. all ground circulation tanks, circulation line, mud gun, increase the weight of pipeline and clean fully, totally;
2. all mud tank sewage draining exits, ramp pan need carefully to check to the inlet baffle of each mud tank, guarantee sealing, prevent that the mud string from leaking;
3. under agitation prepare drilling fluid by prescription, should stir more than 4 hours after preparation is finished.
2, the replacement of drilling fluid:
1. for regulating water-based mud rheological in the well before the slurry, reduce the sticking of water-based mud and cut, improve displacement efficiency, prevent that mixed slurry from polluting synthetic basic mud;
2. bored cement plug, enter new stratum 3m, inject the high base drilling fluid 150 m～300m that is bonded into as preflush spacer fluid (entering well synthetic base drilling fluid+2%～4% organophilic clay+2%～3% flow pattern regulator), with synthetic base drilling fluid water-base drilling fluid in the well is ejected, use synthetic base drilling fluid to creep into.
3. must guarantee in the displacement process that drilling tool rotates, rotating speed prevents two kinds of different drilling fluid channellings of displacement process at 30 rpm～35rpm;
4. in case the replacement beginning before extremely replacement finishes, never allows termination of pumping;
5. mixed slurry should in time be drained or be collected with independent mud tank, and processing can be sneaked into the synthetic base drilling fluid recycle system after reaching synthetic basic performance.
6. 2～3 circulating cycles of circulation after replacement is finished, fully mix reaching by the shaft bottom circulation shear, the emulsifying stability of raising synthetic base drilling fluid.
Claims (10)
1. the maintaining method of synthetic base drilling fluid is characterized in that: safeguarding that the water content of controlling when processing in the synthetic base drilling fluid is between 10%～15%.
2. the maintaining method of synthetic base drilling fluid according to claim 1, it is characterized in that: in the mass percent in the whole drilling fluid, keep the content of synthetic base between 60～70%, keep the content of primary emulsion between 3.0%～5.0%, keep the content of auxiliary emulsifying agent between 2.0%～4.0%, keep simultaneously emulsion-breaking voltage and be higher than 400V.
3. the maintaining method of synthetic base drilling fluid according to claim 1 and 2, it is characterized in that: in the mass percent in the whole drilling fluid, 4.0%～6.0% fluid loss agent content and 2.0%～3.0% anti-collapse plugging agent content in the maintenance synthetic base drilling fluid, high temperature and high pre ssure filtration is less than 6ml in the control drilling fluid.
4. the maintaining method of synthetic base drilling fluid according to claim 3, it is characterized in that: in volume percent, sand content is less than 0.2% in the control synthetic base drilling fluid, solid load is less than 30%, vibratory screening apparatus adopts more than or equal to 120 purpose detailed catalogue wire screen, regularly use whizzer, remove harmful solid phase, the cleaning drilling fluid.
5. the maintaining method of synthetic base drilling fluid according to claim 4 is characterized in that: described synthetic base drilling fluid is mixed by the raw material of following weight per-cent: 60～70% synthetic base; 2.0%～4.0% organophilic clay; 3.0%～5.0% primary emulsion; 2.0%～4.0% auxiliary emulsifying agent; 0.1%～0.2% wetting agent; 0.5%～2.0% flow pattern regulator; 2.0%～3.0% CaO; 10%～15% CaCl
2The aqueous solution; 4.0%～6.0% fluid loss agent and 2.0%～3.0% anti-collapse plugging agent.
6. the maintaining method of synthetic base drilling fluid according to claim 5, it is characterized in that: described anti-collapse plugging agent is the oil base drilling fluid plugging agent of being made by oil-soluble resin, rigid particles, surfactant compound, belong to prior art, its oil base drilling fluid plugging agent Resin adhesive bundle of particle (ZCY-STAB) entirely by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
7. the maintaining method of synthetic base drilling fluid according to claim 5, it is characterized in that: described primary emulsion be take unsaturated fatty acids as main raw material(s), alkylamine is auxiliary material, synthetic oil base drilling fluid primary emulsion alkanoic acid acid amides, belong to prior art, full oil base drilling fluid primary emulsion alkanoic acid acid amides (ZCY-PEMUL) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
8. the maintaining method of synthetic base drilling fluid according to claim 5, it is characterized in that: described auxiliary emulsifying agent is as starting material take lipid acid, alcohols, the oil base drilling fluid that generates through the esterification building-up reactions is with auxiliary emulsifying agent fatty acid ester, belong to prior art, complete by name oil base drilling fluid is with auxiliary emulsifying agent fatty acid ester (ZCY-SMUL), belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
9. the maintaining method of synthetic base drilling fluid according to claim 5, it is characterized in that: described wetting agent is the oil base drilling fluid wetting agent quaternary ammonium salt of being made by the straight chain quaternary amine of C12～C18 and alkyl halide building-up reactions, belong to prior art, full oil base drilling fluid wetting agent quaternary ammonium salt (ZCY-WET) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
10. the maintaining method of synthetic base drilling fluid according to claim 5, it is characterized in that: described flow pattern regulator is to be raw material by stearyl methacrylate, maleic anhydride, vinylbenzene, react the oil base drilling fluid flow pattern regulator oil-soluble polymers of making by terpolymer, belong to prior art, full oil base drilling fluid flow pattern regulator oil-soluble polymers (ZCY-RMOD) by name, belong to the commercially available prod, manufacturer is drilling engineering and technological research institute of China Petroleum Group Chuanqing Drilling Engineering Co., Ltd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105795538A CN103013475A (en) | 2012-12-28 | 2012-12-28 | Maintenance method of synthetic base drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105795538A CN103013475A (en) | 2012-12-28 | 2012-12-28 | Maintenance method of synthetic base drilling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103013475A true CN103013475A (en) | 2013-04-03 |
Family
ID=47962598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105795538A Pending CN103013475A (en) | 2012-12-28 | 2012-12-28 | Maintenance method of synthetic base drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103013475A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893567A (en) * | 2015-12-18 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of environment-friendly type synthetic base drilling fluid |
| CN114605971A (en) * | 2020-12-08 | 2022-06-10 | 中石化石油工程技术服务有限公司 | Drilling fluid and drilling fluid performance maintenance method based on wellbore temperature |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1660958A (en) * | 2004-02-23 | 2005-08-31 | 中海石油（中国）有限公司天津分公司 | Drilling fluid with synthesized substrate |
| CN101200631A (en) * | 2006-12-13 | 2008-06-18 | 张金波 | Method for preparing high-performance filming water-base drilling fluid |
-
2012
- 2012-12-28 CN CN2012105795538A patent/CN103013475A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1660958A (en) * | 2004-02-23 | 2005-08-31 | 中海石油（中国）有限公司天津分公司 | Drilling fluid with synthesized substrate |
| CN101200631A (en) * | 2006-12-13 | 2008-06-18 | 张金波 | Method for preparing high-performance filming water-base drilling fluid |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893567A (en) * | 2015-12-18 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of environment-friendly type synthetic base drilling fluid |
| CN114605971A (en) * | 2020-12-08 | 2022-06-10 | 中石化石油工程技术服务有限公司 | Drilling fluid and drilling fluid performance maintenance method based on wellbore temperature |
| CN114605971B (en) * | 2020-12-08 | 2023-07-21 | 中石化石油工程技术服务有限公司 | Drilling fluid and drilling fluid performance maintenance method based on shaft temperature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103013474A (en) | Preparation method of synthetic base drilling fluid | |
| CN102304353B (en) | Environmental-friendly type oil-based drilling fluid and preparation method thereof | |
| CN101180447B (en) | Invert emulsion based completion and displacement fluid and method of use | |
| CN103013476A (en) | Synthetic base drilling fluid | |
| CA2583484C (en) | Drilling fluid and method for reducing lost circulation | |
| RU2625683C2 (en) | Composition including the connection of alcohoxylated amine and the connection of carbonic acid, its application in the drilling fluids of the type "water in the oil" and to improve the properties of fluidity of the raw oil in the cold | |
| US20160222274A1 (en) | Additives for controlling lost circulation and methods of making and using same | |
| CN109996930B (en) | Method of treating a downhole formation zone | |
| WO2012129406A1 (en) | Methods of using invert emulsion fluids with high internal phase concentration | |
| CN103937475B (en) | Carbon dioxide acidification blocking remover and process of not reversely discharging raffinate after acidification | |
| CN103146363B (en) | Composite salt low-activity anti-sloughing drilling fluid and construction method thereof | |
| CN106566496A (en) | Emulsion drilling fluid with high density and low oil-water ratio for shale horizontal well | |
| CN102337108A (en) | Efficient anti-pollution isolation liquid for well cementation and preparation method thereof | |
| EA017102B1 (en) | Fluid loss additive for oil-based muds | |
| CN101765696A (en) | Method of completing a well with sand screens | |
| CN107474814A (en) | A kind of emulsion-type oil base mud cleans liquid and preparation method thereof | |
| US20200385626A1 (en) | Invert-emulsion oil based mud formulation using calcium salt of fatty acid as primary emulsifier | |
| RU2583104C1 (en) | Method for processing bottomhole formation zone | |
| Nutskova et al. | Research of oil-based drilling fluids to improve the quality of wells completion | |
| CN101918509A (en) | Drilling fluid additive and methods of stabilizing kaolinite fines migration | |
| CN107325797B (en) | Low oil-water ratio oil-based drilling fluid and preparation method thereof | |
| CA3090866A1 (en) | Polyamine polyethers as nonemulsifier components | |
| CN103013475A (en) | Maintenance method of synthetic base drilling fluid | |
| CN108084976A (en) | A kind of loose sand reservoir protection drilling fluid and preparation method thereof | |
| RU2710654C1 (en) | Highly inhibited invert drilling agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130403 |