CN109337658A - A kind of water-based drilling solution additive and its drilling fluid and preparation method - Google Patents
A kind of water-based drilling solution additive and its drilling fluid and preparation method Download PDFInfo
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- CN109337658A CN109337658A CN201811465674.3A CN201811465674A CN109337658A CN 109337658 A CN109337658 A CN 109337658A CN 201811465674 A CN201811465674 A CN 201811465674A CN 109337658 A CN109337658 A CN 109337658A
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- drilling fluid
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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
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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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
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Dispersion Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of water-based drilling solution additive, includes polyanion cellulose potassium, and the molecular formula of polyanion cellulose potassium is [C6H7O2(OH)2OCH2COOK] n, n 100-4000, the present invention also provides a kind of water-base drilling fluids, and it comprises this water-based drilling solution additives.Additive of the present invention can be exceedingly fast, can be greatly reduced the hydration of clay, avoid rock stratum clay from corroding and diffusion, include that the water-base drilling fluid of this additive can effectively improve pulping inhibiting rate, reduce filter loss, prevent drilling from cavity, card pipe phenomenon occur.
Description
Technical field
The present invention relates to water-base drilling fluid field, in particular to a kind of water-based drilling solution additive and its drilling fluid and preparation
Method.
Background technique
Continuous development with petroleum industry and the reinforcement to environmental protection consciousness, people are for oil drilling technique and stone
Oily drilling fluid requires also higher and higher, some new oil drilling techniques, as directional well, horizontal well in drilling engineering gradually
It is formed and perfect.It is well known that during drillng operation, the stability of drilling be determine drillng operation success or failure it is most important because
Element.The unstability of drilling in fact may relate to constitute rock stratum clay erosion and diffusion, and this may cause cavity,
Card pipe and drilling is abandoned, and is dispersed in the clay in mud and can reduce bit speed.By clay mineral
Structure is it is recognised that all kinds of clay minerals have certain cation exchange capacity (CEC).And cation exchange is the one big main of fouling
Reason, this is mainly the exchange interaction of the Na+ and clay Mineral Elements in solution, and then has caused clay hydration swelling.
Currently, most widely used tackifier are sodium carboxymethylcelluloses in drilling fluid, however, CMC-Na in drilling process
Degradation, lead to Na+Concentration increases, and Na+Be conducive to clay aquation, drilling fluid inhibition is caused to decline.Therefore it needs to drilling well
Sylvite is continuously replenished in liquid, to keep the inhibition of drilling fluid.With the continuous consumption of sylvite and the continuous accumulation of sodium salt, most
It will lead to drilling fluid inhibition eventually gradually to decline, cannot effectively meet the needs of development of oil industry.
Therefore, how quickly, efficiently reduce clay hydration swelling, there are the fortuitous events such as cavity, card pipe to reduce drilling well
Probability of happening, be those skilled in the art's urgent problem to be solved.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of water-based drilling solution additive, this additives
Can be exceedingly fast, can be greatly reduced the hydration of clay, avoid rock stratum clay from corroding and diffusion, include the water of this additive
Base drilling fluid can effectively improve pulping inhibiting rate, reduce filter loss, prevent drilling from cavity, card pipe phenomenon occur.
The technical scheme is that a kind of water-based drilling solution additive, includes polyanion cellulose potassium, polyanion
The molecular formula of cellulose potassium is [C6H7O2(OH)2OCH2COOK] n, n 100-4000.
Preferably, water-based drilling solution additive also include XC biopolymer, gypsum and/or lime, barite it is any
One or more combination.
Preferably, water-based drilling solution additive includes 50-150 parts by weight polyanion cellulose potassium, 8-15 parts by weight
The barite of XC biopolymer, the gypsum of 17-23 parts by weight and/or lime, 14-20 parts by weight.
A kind of water-base drilling fluid, including any above-mentioned water-based drilling solution additive, surplus are water, polyanion cellulose potassium
Content be 0.2-1.5wt%.
Preferably, the content of polyanion cellulose potassium is 0.2-1.0wt%.
The method for preparing above-mentioned water-base drilling fluid, has follow steps:
Water is measured, additive is added into water, is uniformly mixed, makes the content of polyanion cellulose potassium in every cubic meter of water
For 2-15kg.
It has the advantages that by adopting the above technical scheme
1, the polyanion cellulose potassium for including in water-based drilling solution additive provided by the invention is exchanged by cation
Effect, quickly, largely exchanges to clay particle surface at normal temperature, effectively inhibits clay surface penetration hydration, avoid
Rock stratum clay corrodes and diffusion, keeps the wall of a borehole stability, prevents drilling from cavity, card pipe phenomenon occur, also improves drilling cuttings
The rate of recovery keeps the rheological characteristic of drilling fluid more preferable, keeps bit speed.
2, the content of polyanion cellulose potassium is 2-15kg in every cubic meter of water in water-base drilling fluid of the present invention, if being lower than
5kg/m3, can not achieve drilling fluid of the present invention and efficiently inhibit the technical effect of clay aquation, if being above 15kg/m3, then will lead to
Drilling fluid system viscosity is excessively high, seriously reduces bit speed.
It is further described combined with specific embodiments below.
Specific embodiment
In the present invention, polyanion cellulose potassium is purchased from Chongqing Lihong Fine Chemicals Co., Ltd..The present invention passes through addition
The drilling cuttings generated in HOLEPLUG bentonite in lump (drying) simulation drilling process.Unmentioned equipment and being of measuring method
Industrial and commercial bank's industry usual equipment or method.
Obtain rheological parameter, measure filter loss (FL) the first base starch the preparation method is as follows:
1) distilled water is taken, bentonite is added, until concentration is 4wt%, ambient temperature overnight maintenance；
2) potassium chloride, potassium hydroxide are continuously added, until concentration is respectively 0.2wt%, 0.1wt%；
The the second base slurry for obtaining cuttings recovery uses distilled water.
Blank example one
The first base slurry 350ml is measured, high-speed stirred is stored at room temperature maintenance 16h to being uniformly mixed, and tests in the first base slurry
Drilling fluid rheology obtains rheological parameter, while measuring filter loss (FL)；
The second base slurry 350ml is measured, 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat rolling aging 16h, cooling are added
To room temperature, simulation drilling cuttings is screened out with 40 mesh screens in the second base slurry, after being cleaned with 500ml distilled water, is dried at 105 DEG C
4h, obtaining drilling cuttings weight is 0, and drilling cuttings yield is 0, as shown in table 1.
Reference examples one
The first base slurry 350ml is measured, the sodium carboxymethylcellulose (CMC-Na) of 0.7g (0.20wt%), high-speed stirred are added
To being uniformly mixed, it is stored at room temperature maintenance 16h, drilling fluid rheology is tested in the first base slurry, obtains rheological parameter, measure simultaneously
Filter loss (FL)；
The second base slurry 350ml is measured, the sodium carboxymethylcellulose (CMC-Na) of 0.7g (0.20wt%) is added, stirs to molten
Liquid is completely dissolved, and adds 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat rolling aging 16h, after being cooled to room temperature, second
Simulation drilling cuttings is screened out with 40 mesh screens in base slurry, after being cleaned with 500ml distilled water, 4h is dried at 105 DEG C, obtains drilling cuttings weight
For 4.2g, drilling cuttings yield is 15%, as shown in table 1.
Reference examples two
The first base slurry 350ml is measured, the sodium carboxymethylcellulose (CMC-Na) of 2.1g (0.60wt%), high-speed stirred are added
To being uniformly mixed, it is stored at room temperature maintenance 16h, drilling fluid rheology is tested in the first base slurry, obtains rheological parameter, measure simultaneously
Filter loss (FL)；
The second base slurry 350ml is measured, the sodium carboxymethylcellulose (CMC-Na) of 2.1g (0.60wt%) is added, stirs to molten
Liquid is completely dissolved, and adds 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat rolling aging 16h, after being cooled to room temperature, second
Simulation drilling cuttings is screened out with 40 mesh screens in base slurry, after being cleaned with 500ml distilled water, 4h is dried at 105 DEG C, obtains drilling cuttings weight
For 8.4g, drilling cuttings yield is 30%, as shown in table 1.
Reference examples three
The first base slurry 350ml is measured, the sodium carboxymethylcellulose (CMC-Na) of 3.5g (1.0wt%), high-speed stirred are added
To being uniformly mixed, it is stored at room temperature maintenance 16h, drilling fluid rheology is tested in the first base slurry, obtains rheological parameter, measure simultaneously
Filter loss (FL)；
The second base slurry 350ml is measured, the sodium carboxymethylcellulose (CMC-Na) of 3.5g (1.0wt%) is added, stirs to molten
Liquid is completely dissolved, and adds 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat rolling aging 16h, after being cooled to room temperature, second
Simulation drilling cuttings is screened out with 40 mesh screens in base slurry, after being cleaned with 500ml distilled water, 4h is dried at 105 DEG C, obtains drilling cuttings weight
For 10.1g, drilling cuttings yield is 36%, as shown in table 1.
Reference examples four
The first base slurry 350ml is measured, sodium carboxymethylcellulose (the CMC-Na)+potassium chloride of 0.7g (0.20wt%) is added
(KCl) (conventional hybrid mode), high-speed stirred are stored at room temperature maintenance 16h to being uniformly mixed, test mud stream in the first base slurry
Denaturation obtains rheological parameter, while measuring filter loss (FL)；
The second base slurry 350ml is measured, sodium carboxymethylcellulose (the CMC-Na)+potassium chloride of 0.7g (0.20wt%) is added
(KCl) (conventional hybrid mode), stirring to solution are completely dissolved, and add 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat
Aging 16h is rolled, after being cooled to room temperature, simulation drilling cuttings is screened out with 40 mesh screens in the second base slurry, is cleaned with 500ml distilled water
Afterwards, 4h is dried at 105 DEG C, obtaining drilling cuttings weight is 7g, and drilling cuttings yield is 25%, as shown in table 1.
Reference examples five
The first base slurry 350ml is measured, sodium carboxymethylcellulose (the CMC-Na)+potassium chloride of 2.1g (0.60wt%) is added
(KCl) (conventional hybrid mode), high-speed stirred are stored at room temperature maintenance 16h to being uniformly mixed, test mud stream in the first base slurry
Denaturation obtains rheological parameter, while measuring filter loss (FL)；
The second base slurry 350ml is measured, sodium carboxymethylcellulose (the CMC-Na)+potassium chloride of 2.1g (0.60wt%) is added
(KCl) (conventional hybrid mode), stirring to solution are completely dissolved, and add 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat
Aging 16h is rolled, after being cooled to room temperature, simulation drilling cuttings is screened out with 40 mesh screens in the second base slurry, is cleaned with 500ml distilled water
Afterwards, 4h is dried at 105 DEG C, obtaining drilling cuttings weight is 12.6g, and drilling cuttings yield is 45%, as shown in table 1.
Reference examples six
The first base slurry 350ml is measured, sodium carboxymethylcellulose (the CMC-Na)+potassium chloride of 3.5g (1.0wt%) is added
(KCl) (conventional hybrid mode), high-speed stirred are stored at room temperature maintenance 16h to being uniformly mixed, test mud stream in the first base slurry
Denaturation obtains rheological parameter, while measuring filter loss (FL)；
The second base slurry 350ml is measured, sodium carboxymethylcellulose (the CMC-Na)+potassium chloride of 3.5g (1.0wt%) is added
(KCl) (conventional hybrid mode), stirring to solution are completely dissolved, and add 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat
Aging 16h is rolled, after being cooled to room temperature, simulation drilling cuttings is screened out with 40 mesh screens in the second base slurry, is cleaned with 500ml distilled water
Afterwards, 4h is dried at 105 DEG C, obtaining drilling cuttings weight is 16.8g, and drilling cuttings yield is 60%, as shown in table 1.
Test example one
The first base slurry 350ml is measured, the polyanion cellulose potassium (PAC-K) of 0.7g (0.20wt%), high-speed stirring are added
It mixes to being uniformly mixed, is stored at room temperature maintenance 16h, test drilling fluid rheology in the first base slurry, obtain rheological parameter, survey simultaneously
It measures filter loss (FL)；
It measures the second base and starches each 350ml, add the polyanion cellulose potassium (PAC-K) of 0.7g (0.20wt%), stirring
It being completely dissolved to solution, adds 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat roll aging 16h, after being cooled to room temperature,
Simulation drilling cuttings is screened out with 40 mesh screens in second base slurry, after being cleaned with 500ml distilled water, 4h is dried at 105 DEG C, obtains drilling cuttings
Weight is 14g, and drilling cuttings yield is 50%, as shown in table 1.
Test example two
The first base slurry 350ml is measured, the polyanion cellulose potassium (PAC-K) of 2.1g (0.60wt%), high-speed stirring are added
It mixes to being uniformly mixed, is stored at room temperature maintenance 16h, test drilling fluid rheology in the first base slurry, obtain rheological parameter, survey simultaneously
It measures filter loss (FL)；
The second base slurry 350ml is measured, adds the polyanion cellulose potassium (PAC-K) of 2.1g (0.60wt%), stirring is extremely
Solution is completely dissolved, and adds 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat rolling aging 16h, after being cooled to room temperature, the
Simulation drilling cuttings is screened out with 40 mesh screens in diyl slurry, after being cleaned with 500ml distilled water, 4h is dried at 105 DEG C, obtains drilling cuttings weight
Amount is 20.2g, and drilling cuttings yield is 72%, as shown in table 1.
Test example three
The first base slurry 350ml is measured, the polyanion cellulose potassium (PAC-K) of 3.5g (1.0wt%), high-speed stirred are added
To being uniformly mixed, it is stored at room temperature maintenance 16h, drilling fluid rheology is tested in the first base slurry, obtains rheological parameter, measure simultaneously
Filter loss (FL)；
The second base slurry 350ml is measured, the polyanion cellulose potassium (PAC-K) of 3.5g (1.0wt%) is added, stirs to molten
Liquid is completely dissolved, and adds 28g (8wt%) HOLEPLUG bentonite in lump, 70 DEG C of heat rolling aging 16h, after being cooled to room temperature, second
Simulation drilling cuttings is screened out with 40 mesh screens in base slurry, after being cleaned with 500ml distilled water, 4h is dried at 105 DEG C, obtains drilling cuttings weight
For 21.9g, drilling cuttings yield is 78%, as shown in table 1.
Table 1
Cuttings recovery is lower, shows that the HOLEPLUG bentonite in lump hydration phenomena of addition is more serious, makees in actual well drilled
In industry, show rock stratum clay corrode it is more serious with diffusion phenomena, drilling cuttings slurrying is higher.
As it can be seen from table 1 the present invention is added to the water-base drilling fluid of polyanion cellulose potassium, appoint relative to not adding
The blank example of what additive, and the sodium carboxymethylcellulose (conventional additives) or sodium carboxymethylcellulose of addition same ratio
+ potassium chloride (conventional additives), filter loss is remarkably decreased, and the stability of borehole wall can be effectively improved in actual application；This
Invention is added to the water-base drilling fluid of polyanion cellulose potassium, relative to the blank example for not adding any additive, Yi Jitian
Add the sodium carboxymethylcellulose or sodium carboxymethylcellulose+potassium chloride of same ratio, the rate of recovery of drilling cuttings is significantly improved, actually answered
With that can effectively inhibit rock stratum clay (drilling cuttings) surface penetration hydration in the process, drilling cuttings slurrying rate is low, makes the stream of drilling fluid
Denaturation is more preferable, keeps bit speed, and clay erosion in rock stratum is slight with diffusion phenomena, and drilling can also be effectively prevent cavity, card occur
Pipe phenomenon.
Claims (6)
1. a kind of water-based drilling solution additive, which is characterized in that it include polyanion cellulose potassium, polyanion cellulose potassium
Molecular formula is [C6H7O2(OH)2OCH2COOK] n, n 100-4000.
2. water-based drilling solution additive according to claim 1, which is characterized in that also include XC biopolymer, gypsum
And/or any one or a few combination of lime, barite.
3. water-based drilling solution additive according to claim 2, which is characterized in that including 50-150 parts by weight polyanion
Cellulose potassium, the XC biopolymer of 8-15 parts by weight, the gypsum of 17-23 parts by weight and/or lime, 14-20 parts by weight weight
Spar.
4. a kind of water-base drilling fluid, which is characterized in that including any water-based drilling solution additive of claim 1-3, surplus
For water, the content of polyanion cellulose potassium is 0.2-1.5wt%.
5. water-base drilling fluid according to claim 4, which is characterized in that the content of polyanion cellulose potassium is 0.2-
1.0wt%.
6. the method for preparing water-base drilling fluid described in claim 4 or 5, which is characterized in that have follow steps:
Water is measured, additive is added into water, is uniformly mixed, makes the content 2- of polyanion cellulose potassium in every cubic meter of water
15kg。
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0248495A2 (en) * | 1986-06-05 | 1987-12-09 | AGIP S.p.A. | Potassic drilling mud |
| CN1069050A (en) * | 1986-06-05 | 1993-02-17 | 阿吉普联合股票公司 | Potassic drilling mud |
| CN105349120A (en) * | 2015-11-23 | 2016-02-24 | 中国地质大学（武汉） | Micro solid-phase drilling fluid used for coal-seam-following coal seam gas well and capable of timed degradation and timed degradation method thereof |
| CN106543359A (en) * | 2016-11-03 | 2017-03-29 | 中国地质大学（北京） | Fluid loss agent and its preparation method and application and water-base drilling fluid and its application |
| CN107163920A (en) * | 2017-04-19 | 2017-09-15 | 中国地质大学（北京） | Sealant and water-base drilling fluid and its application |
-
2018
- 2018-12-03 CN CN201811465674.3A patent/CN109337658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0248495A2 (en) * | 1986-06-05 | 1987-12-09 | AGIP S.p.A. | Potassic drilling mud |
| CN1069050A (en) * | 1986-06-05 | 1993-02-17 | 阿吉普联合股票公司 | Potassic drilling mud |
| CN105349120A (en) * | 2015-11-23 | 2016-02-24 | 中国地质大学（武汉） | Micro solid-phase drilling fluid used for coal-seam-following coal seam gas well and capable of timed degradation and timed degradation method thereof |
| CN106543359A (en) * | 2016-11-03 | 2017-03-29 | 中国地质大学（北京） | Fluid loss agent and its preparation method and application and water-base drilling fluid and its application |
| CN107163920A (en) * | 2017-04-19 | 2017-09-15 | 中国地质大学（北京） | Sealant and water-base drilling fluid and its application |
Non-Patent Citations (2)
| Title |
|---|
| PALUMBO: "The Development of Potassium Cellulosic Polymers and Their Contribution to the Inhibition of Hydratable Clays", 《SPE INTERNATIONAL SYMPOSIUM ON OILFIELD CHEMISTRY, 8-10 FEBRUARY, HOUSTON, TEXAS》 * |
| 王中华: "钻井液处理剂现状分析及合成设计探讨", 《中外能源》 * |
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