CN101319135A - Drilling fluid viscosity stabilizer host - Google Patents
Drilling fluid viscosity stabilizer host Download PDFInfo
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- CN101319135A CN101319135A CNA2008101159950A CN200810115995A CN101319135A CN 101319135 A CN101319135 A CN 101319135A CN A2008101159950 A CNA2008101159950 A CN A2008101159950A CN 200810115995 A CN200810115995 A CN 200810115995A CN 101319135 A CN101319135 A CN 101319135A
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- drilling fluid
- drilling
- host
- viscosity
- stabilizer
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Abstract
The present invention discloses a primary drilling fluid viscosity stabilizer. The molecular formula of the primary agent is shown on the right, wherein R1 and R2 are carbon, phosphorus or silicon, D is kalium or sodium, and n1 is larger than or equal to 1 and less than or equal to 500 and n2 is larger than or equal to 1 and less than or equal to 500. By disjointing the grid structure of a drilling fluid clay colloid, the primary stabilizer improves the hydrophilicity on the surface of clay colloidal particles, improves the combining capacity of a coating agent and the clay colloidal particles in the drilling fluid at a high temperature, reduce the impact of the high temperature on the viscosity of the drilling fluid, and restrains the thickening and tackifying effects on the drilling fluid caused by drilling cuttings dispersion.
Description
Technical field
The present invention relates to a kind of viscosity stabilizer host that is used for drilling fluid.
Background technology
In the drilling process, the two big factors that cause drilling fluid viscosity to change are: the increase of temperature rising and solid content.High temperature causes in the drilling fluid that coating agent is degraded, drilling fluid coating agent and clay gel burl close ability drop, thereby causes drilling fluid viscosity to descend; Solid content increases, and causes drilling fluid feeding-up, and viscosity rises, and influences drilling speed and accidents such as bit freezing also may occur.The method that solves preceding problem is to add oxidation inhibitor and improve the high-temperature stability of coating agent or improve the high-temperature stability that molecular structure improves coating agent itself.The method that solves back one problem is that adding clay hydrate inhibitor prevents that drilling cuttings from disperseing.
Above-mentioned means only from improving the treatment agent performance, do not take into full account another important component in the drilling fluid--the clay colloid under two big factor affecting to the influence of drilling fluid viscosity.Only can alleviate high temperature viscosity reduction effect by these means of temperature resistance that improve coating agent, can not solve the problem of drilling cuttings the drilling fluid viscosity influence.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of drilling fluid viscosity stabilizer host, can keep the stability of drilling fluid viscosity under the situation of high temperature and drilling cuttings increase well.
In order to address the above problem, the invention provides a kind of drilling fluid viscosity stabilizer host, its molecular formula is:
Or
Wherein, described R1 and R2 are C (carbon), P (phosphorus) or Si (silicon), and described D is K or Na, described 1≤n1≤500,1≤n2≤500.
Preferably, the end group of described molecular formula can be methyl, hydroxyl or methoxyl group or hydroxyl sodium base (O
-N
a +).
Stablizer by the present invention's preparation can be broken drilling fluid clay colloid spatial grid structure, improve clay colloidal grain surface wetting ability, can suppress the dispersion of soil inferior in the drilling cuttings by filming function, thereby improved coating agent and clay colloidal particle binding ability at high temperature in the drilling fluid, having slowed down high temperature influences drilling fluid viscosity.In addition, by the absorption film-forming to the drilling cuttings surface, stop the dispersion of drilling cuttings, break the drilling fluid spatial grid structure, having reduced drilling cuttings influences drilling fluid viscosity.By above two approach, realize the stable purpose of drilling fluid viscosity has been reduced the influence of drilling fluid viscosity regulate process to drilling speed, for the condition that provides is provided at a high speed, safely.
Embodiment
Below the present invention will be further described in detail.
Embodiment 1
The stabilizer host molecular formula of preparation is:
Wherein, 1≤n1≤500.Its end group is hydroxyl sodium base (O
-N
a +).
In the present embodiment, R
1Be carbon atom (C), R
2Phosphorus atom (P) is the starting point raw material with acetic acid, phosphorus trichloride or phosphorus pentachloride, and is prepared according to following steps:
Step a, elder generation pump into reactor with a certain amount of acetic acid, slowly drip phosphorus trichloride (or phosphorus pentachloride) down at-10 ℃～0 ℃, start stirrer simultaneously;
Step b, phosphorus trichloride (or phosphorus pentachloride) dropwise, and restir 60 minutes finishes to reacting;
Step c, slowly drip a certain amount of deionized water, be warming up to 70 ℃～130 ℃ back flow reaction, the tail gas water absorbs;
Steps d, reaction finish and are neutralized to pH value 10～12 with 30% sodium hydroxide, and are diluted with water to working concentration, and cooling discharge can make the present embodiment stabilizer host.
During the preparation stablizer, add an amount of pour point depressant, thinner etc. according to the general blending process of stablizer and just can make.
The stablizer that makes by present embodiment has good viscosity reducing effect to bentonite slurry, can improve the high temperature bond ability of wilkinite and coating agent in the drilling fluid, improves the high-temperature stability of drilling fluid viscosity.Rolled 16 hours 90 ℃ of heat as drilling fluid, viscosity reduces more than 20%, and when adding the stablizer 0.2% of preparation (significant quantity), its reduced rate drops in 10%.
Embodiment 2
The preparation molecular formula is
Stabilizer host; Wherein, 1≤n1≤500, its end group is hydroxyl sodium base (O
-N
a +) and methoxyl group or methyl.
In the present embodiment, R
1, R
2Be Siliciumatom (S
i), be the starting point raw material with the silicon tetrachloride, and be prepared according to following steps:
Step a, silicon tetrachloride is pumped into reactor;
Step b, a certain amount of alcohols or oxirane and sodium hydroxide solution pumped into drip jar;
Step c, unlatching stirrer slowly drip alcohols or oxirane solution, back flow reaction, and the hydrogen chloride gas water that reaction produces absorbs;
Steps d, above-mentioned reaction finish, and cool to room temperature, slowly drip a certain amount of sodium hydroxide solution again, make hydroxyl sodium base and alkoxyl group or alkyl adjust to proper ratio;
After step e, the vacuum deodorizing, discharging can make the present embodiment stabilizer host.
During the preparation stablizer, add an amount of pour point depressant, thinner etc. according to the general blending process of stablizer and just can make.
The stablizer that makes by present embodiment has good inhibition dissemination to drilling cuttings, can improve the anti-cuttings contamination ability of drilling fluid, and can improve the high-temperature stability of drilling fluid viscosity.When effective dosage is 0.2%, drilling cuttings rolling recovering condition is 90 ℃, 16 hours, compares test with clear water, and its drilling cuttings rolling rate of recovery significantly promotes; As the clear water rate of recovery is 5% o'clock, and adding this agent 3% back drilling cuttings rolling rate of recovery can reach more than 50%.Add coal powder quantity of bore 10% in drilling fluid, the fluctuation that adds this agent 0.2% (significant quantity) mud viscosity drops in 10% by 30%.
Embodiment 3
The preparation molecular formula is
Stabilizer host, wherein, 1≤n1≤500.Its end group is hydroxyl sodium base (O
-N
a +).
In the present embodiment, R
1, R
2Be Siliciumatom (S
i) and phosphorus atom, be the starting point raw material with phosphorus trichloride, tetramethoxy-silicane, and be prepared according to following steps:
Step a, tetramethoxy-silicane is pumped into reactor;
Step b, a certain amount of deionization, phosphorus trichloride pumped into drip jar;
Step c, unlatching stirrer slowly drip phosphorus trichloride, deionized water, back flow reaction, and the hydrogen chloride gas water that reaction produces absorbs;
Steps d, above-mentioned reaction finish, and cool to room temperature, slowly drip a certain amount of sodium hydroxide solution again;
After step e, the vacuum deodorizing, discharging can make the present embodiment stabilizer host.
During the preparation stablizer, add an amount of pour point depressant, thinner etc. according to the general blending process of stablizer and just can make.
The stablizer that makes by present embodiment has good inhibition dissemination to drilling cuttings, can improve the anti-cuttings contamination ability of drilling fluid, and can improve the high-temperature stability of drilling fluid viscosity.When in the drilling fluid during coal powder quantity of bore 10%, the fluctuation that adds this agent 0.2% (significant quantity) mud viscosity drops in 10% by 30%.
Embodiment 4
The preparation molecular formula is:
Stabilizer host wherein, 1≤n1≤500.Its end group is hydroxyl sodium base (O
-N
a +) and methyl.
Preparation technology is: with Acetyl Chloride 98Min., silicon tetrachloride is the starting point raw material, and is prepared according to following steps:
Step a pumps into reactor with a certain amount of deionized water;
Step b, silicon tetrachloride pumped into drip jar, slowly be added drop-wise to reactor, the limit is dripped temple and is mixed, and the tail gas water absorbs;
The above-mentioned reaction of step c finishes dripping acetyl chloride, back flow reaction;
Steps d, above-mentioned reaction finish, and cool to room temperature, slowly drip a certain amount of sodium hydroxide solution again;
After step e, the vacuum deodorizing, discharging can make the present embodiment stabilizer host.
During the preparation stablizer, add an amount of pour point depressant, thinner etc. according to the general blending process of stablizer and just can make.
The stablizer that makes by present embodiment has good inhibition dissemination to drilling cuttings, can improve the anti-cuttings contamination ability of drilling fluid, and can improve the high-temperature stability of drilling fluid viscosity.When effective dosage is 0.2%, drilling cuttings rolling recovering condition is 90 ℃, 16 hours, compares test with clear water, and its drilling cuttings rolling rate of recovery significantly promotes; As the clear water rate of recovery is 5% o'clock, and adding this agent 3% back drilling cuttings rolling rate of recovery can reach more than 50%.Add coal powder quantity of bore 10% in drilling fluid, the fluctuation that adds this agent 0.2% (significant quantity) mud viscosity drops in 10% by 30%.
Embodiment 5
The preparation molecular formula is
Stabilizer host wherein, 1≤n1≤500, its end group is hydroxyl sodium base (O
-N
a +).
Preparation technology is: with phosphoric acid, soda ash, sodium hydroxide is raw material, gets product with the superheated vapour stirring reaction.
Step a; A certain amount of phosphoric acid is pumped into reactor;
Step b, a certain amount of soda ash being joined reactor, is 7-8 with superheated vapour stirring reaction more than 130 ℃ to pH value;
Step c, add a certain amount of sodium hydroxide pH value 10-12 that neutralizes;
Steps d, will go up the step reaction mass pour kneader into, in reacting by heating more than 100 ℃, close most with water evaporate product.
During the preparation stablizer, add an amount of pour point depressant, thinner etc. according to the general blending process of stablizer and just can make.
The stablizer that makes by present embodiment can effectively be broken the spatial grid structure of drilling fluid, improves solid phase capacity and the anti-cuttings contamination ability of drilling fluid, and can improve the high temperature bond ability of drilling fluid coating agent and clay, the high-temperature stability of raising drilling fluid viscosity.Rolled 16 hours 90 ℃ of heat as drilling fluid, viscosity reduces more than 20%; When adding the stablizer 0.2% of preparation (significant quantity), its reduced rate drops in 10%.
Embodiment 6
The preparation molecular formula is
Stabilizer host wherein, 1≤n2≤500, its end group is alkyl or alkoxyl group or hydroxyl sodium base (O
-N
a +).
The present case stablizer is the starting point raw material with silicon tetrachloride, oxirane, sodium hydroxide, according to the following steps preparation:
Step a, a certain amount of silicon tetrachloride is added reactor;
Step b, oxirane pumped into drip jar, slowly be added drop-wise to reactor, the limit is dripped temple and is mixed, and temperature of reaction is controlled at 40-80 ℃, finishes up to the oxirane reaction;
Step c, above-mentioned reaction finish, cool to room temperature, and slow dropping sodium solution, controlled temperature is 40-60 ℃ of reaction;
Steps d, above-mentioned reaction finish, and cool to room temperature, drip a certain amount of sodium hydroxide solution again, regulate pH value to 10-12;
After step e, the vacuum deodorizing, discharging can make the present embodiment stabilizer host.
During the preparation stablizer, add an amount of pour point depressant, thinner etc. according to the general blending process of stablizer and just can make.
The effect of present embodiment is: the stablizer that makes by present embodiment has good inhibition dissemination to drilling cuttings, can improve the anti-cuttings contamination ability of drilling fluid, and can improve the high-temperature stability of drilling fluid viscosity.When effective dosage is 0.2%, drilling cuttings rolling recovering condition is 90 ℃, 16 hours, compares test with clear water, and its drilling cuttings rolling rate of recovery significantly promotes; As the clear water rate of recovery is 5% o'clock, and adding this agent 3% back drilling cuttings rolling rate of recovery can reach more than 50%.Add coal powder quantity of bore 10% in drilling fluid, the fluctuation that adds this agent 0.2% (significant quantity) mud viscosity drops in 10% by 30%.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1, a kind of drilling fluid viscosity stabilizer host is characterized in that, its molecular formula is:
Wherein, described R1 and R2 are carbon, phosphorus or silicon, and described D is sodium or potassium, described 1≤n1≤500,1≤n2≤500.
2, host as claimed in claim 1 is characterized in that, the end group of described molecular formula can be alkyl, hydroxyl or alkoxyl group or hydroxyl sodium base (O
-N
a +).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101159950A CN101319135A (en) | 2008-07-01 | 2008-07-01 | Drilling fluid viscosity stabilizer host |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101159950A CN101319135A (en) | 2008-07-01 | 2008-07-01 | Drilling fluid viscosity stabilizer host |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101319135A true CN101319135A (en) | 2008-12-10 |
Family
ID=40179414
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101159950A Pending CN101319135A (en) | 2008-07-01 | 2008-07-01 | Drilling fluid viscosity stabilizer host |
Country Status (1)
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|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993686A (en) * | 2009-08-12 | 2011-03-30 | 中国石油天然气股份有限公司 | Viscosity protective agent for sewage-prepared polymer solution |
-
2008
- 2008-07-01 CN CNA2008101159950A patent/CN101319135A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993686A (en) * | 2009-08-12 | 2011-03-30 | 中国石油天然气股份有限公司 | Viscosity protective agent for sewage-prepared polymer solution |
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