CN109135695A - A kind of molten plugging drilling fluid of theobromine and preparation method thereof - Google Patents
A kind of molten plugging drilling fluid of theobromine and preparation method thereof Download PDFInfo
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- CN109135695A CN109135695A CN201811044736.3A CN201811044736A CN109135695A CN 109135695 A CN109135695 A CN 109135695A CN 201811044736 A CN201811044736 A CN 201811044736A CN 109135695 A CN109135695 A CN 109135695A
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- parts
- drilling fluid
- theobromine
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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
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- 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)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
Present invention relates particularly to molten plugging drilling fluids of a kind of theobromine and preparation method thereof, belong to drilling technology field.The molten plugging drilling fluid of theobromine of the invention comprises the following components in parts by weight: 5~8 parts of bentonite, 0.3~0.4 part of soda ash, 100 parts of water, mentioning 0.3~0.5 part of stick, 0.4~0.6 part of fluid loss additive, 3~10 parts of bridging-off agent, 3~15 parts of sealing agent.The molten plugging drilling fluid of theobromine of the invention can block drop ply, prevent formation leakage；The molten plugging drilling fluid of the theobromine is easily molten by acid in reservoir later period acidizing treatment simultaneously, avoids plugging material blocking reservoir and causes permeability decrease so that reservoir withdrawal reduction, is conducive to the discovery of oil-gas Layer and improves yield.
Description
Technical field
The invention belongs to drilling technology fields, and in particular to a kind of molten plugging drilling fluid of theobromine and preparation method thereof.
Background technique
Since oil production rate is seriously reduced in latter period of oilfield development, people start the stone in fracture development, easily missed
Incremental reserves are found by charcoal system.In the exploration process of the Carboniferous System, since fracture development to miss frequent occurrence in drilling process,
So as to cause down hole problems such as cave-in, bit freezings.Therefore it needs to carry out leak stopping using plugging drilling fluid.Application publication number
A kind of While-drilling leak resisting and sealing drilling liquid for leakage formation is disclosed for the Chinese patent application of CN101906290A.The leak-proof leak-stopping bores
The preparation of well liquid the following steps are included: take 100 parts of clear water by weight, be added 1~5 part of caustic soda, 1~10 part of soda ash, poly- yin from
It 3~10 parts and 3~15 parts of sodium bentonite of subbundle element, stirs evenly, forms base slurry；Gel is added while stirring in base slurry
3~10 parts of sealing agent, 3~15 parts of bridging-off agent, 3~10 parts of asphalt powder stir evenly.The plugging drilling fluid solid concentration is less than
3%, reduce the injury to oil reservoir.
But above-mentioned leak-proof leak-stopping drilling fluid is not easy to be acidified in the operation of reservoir later period, causes so as to cause reservoir blocking
Permeability decrease causes reservoir withdrawal to reduce, and influences the discovery of oil-gas Layer.Therefore, it is not influenced while solving circulation problems
Later period acidizing treatment, which becomes, one of to be needed to overcome the problems, such as in a drilling operation course.
Summary of the invention
The purpose of the present invention is to provide a kind of molten plugging drilling fluid of theobromine, which is solving circulation problems
It will not influence later period acidizing treatment simultaneously.
The object of the invention is also to provide a kind of preparation methods of above-mentioned molten plugging drilling fluid of theobromine.
To achieve the above object, the technical scheme is that
A kind of molten plugging drilling fluid of theobromine, is grouped as by the group of following parts by weight: 5~8 parts of bentonite, soda ash 0.3~0.4
Part, 100 parts of water, mention 0.3~0.5 part of stick, 0.4~0.6 part of fluid loss additive, 3~10 parts of bridging-off agent, 3~15 parts of sealing agent.
Preferably, the molten plugging drilling fluid of theobromine is grouped as by the group of following parts by weight: 5~8 parts of bentonite, soda ash
0.3~0.4 part, 100 parts of water, mention 0.3~0.5 part of stick, 0.4~0.6 part of fluid loss additive, 3~8 parts of bridging-off agent, sealing agent 6~
12 parts.
The stick that mentions is at least one of CMC-HV, 80A51.Preferably CMC-HV.
The fluid loss additive is CMC-LV, NH4At least one of HPAN.Preferably CMC-LV.
The bridging-off agent is at least one of KGD, DF-II.Preferably KGD, specific ingredient include different-grain diameter
Calcareous particle.
The sealing agent is at least one of JHSD, ASC-1, SSZ-1.Preferably, sealing agent JHSD, specific ingredient
Mixture including fiber and water-absorbent expansive polymer.
Wherein bridging-off agent and sealing agent are the molten plugging material of theobromine, can be selected in actual application according to the size in crack
Select the bridging-off agent and sealing agent of suitable granular size.
A kind of preparation method of the molten plugging drilling fluid of above-mentioned theobromine, comprising the following steps:
(1) first by bentonite, soda ash, mention stick, fluid loss additive and be uniformly mixed with water, obtain drilling fluid；
(2) bridging-off agent, sealing agent are added sequentially in above-mentioned drilling fluid again, are uniformly mixed and are bored to get the molten leak stopping of theobromine
Well liquid.
By bentonite, soda ash, mention stick, drilling fluid that fluid loss additive forms has suspension cutting carring, stabilizing borehole
Effect, bridging-off agent and sealing agent are the molten plugging material of theobromine.The molten plugging material of theobromine and drilling fluid synergistic effect fracture reservoir
Have the function of leak stopping, while easily molten by acid in later period operation process, is conducive to find oil-gas Layer.The molten leak stopping of theobromine of the invention
Drilling fluid not only can be used as leakage-stop liquid, but also can be used as drilling fluid；Not only can operate with thief formation, but can operate with high permeability zone,
Slit formation stratum.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
Bentonite, soda ash involved in following embodiment, to mention stick, fluid loss additive, bridging-off agent be commercial product.
1 part is 1g in following embodiment.
Embodiment 1
The molten plugging drilling fluid of the theobromine of the present embodiment, is grouped as by the group of following parts by weight: 8 parts of bentonite, soda ash 0.4
Part, 100 parts of water, mention 0.3 part of stick, 0.4 part of fluid loss additive, 5 parts of bridging-off agent, 6 parts of sealing agent.
It is CMC-HV (high-viscosity sodium carboxymethyl cellulose, Zhengzhou east auxiliary agent company), drop filter that stick is mentioned in the present embodiment
Mistake agent is CMC-LV (low-viscosity sodium carboxymethyl cellulose, Zhengzhou east auxiliary agent company), and bridging-off agent is the KGD (carbon of different-grain diameter
Sour calcium particle, Henan Golden Horse petroleum science and technology company), sealing agent is JHSD (mixture of fiber and water-absorbent expansive polymer, river
Southern Golden Horse petroleum science and technology company).
The preparation method of the molten plugging drilling fluid of the theobromine of the present embodiment, comprising the following steps:
(1) first 8 parts of bentonites, 0.4 part of soda ash, 0.3 part of CMC-HV, 0.4 part of CMC-LV are uniformly mixed with 100 parts of water,
Obtain drilling fluid；
(2) 5 parts of KGD, 6 parts of JHSD are added sequentially in drilling fluid again, are uniformly mixed to get the molten leak stopping drilling well of theobromine
Liquid.
Embodiment 2
The molten plugging drilling fluid of the theobromine of the present embodiment, is grouped as by the group of following parts by weight: 6 parts of bentonite, soda ash 0.3
Part, 100 parts of water, mention 0.3 part of stick, 0.5 part of fluid loss additive, 7 parts of bridging-off agent, 10 parts of sealing agent.
It is CMC-HV (Zhengzhou east auxiliary agent company) that stick is mentioned in the present embodiment, and fluid loss additive is (the Zhengzhou east CMC-LV
Auxiliary agent company), bridging-off agent is KGD (Henan Golden Horse petroleum science and technology company), and sealing agent is that (Henan Golden Horse petroleum science and technology is public by JHSD
Department).
The preparation method of the molten plugging drilling fluid of the theobromine of the present embodiment, comprising the following steps:
(1) first 6 parts of bentonites, 0.3 part of soda ash, 0.3 part of CMC-HV, 0.5 part of CMC-LV are uniformly mixed with 100 parts of water,
Obtain drilling fluid；
(2) 7 parts of KGD, 10 parts of JHSD are added sequentially in drilling fluid again, are uniformly mixed to get the molten leak stopping drilling well of theobromine
Liquid.
Embodiment 3
The molten plugging drilling fluid of the theobromine of the present embodiment, is grouped as by the group of following parts by weight: 5 parts of bentonite, soda ash 0.3
Part, 100 parts of water, mention 0.3 part of stick, 0.4 part of fluid loss additive, 8 parts of bridging-off agent, 12 parts of sealing agent.
It is CMC-HV (Zhengzhou east auxiliary agent company) that stick is mentioned in the present embodiment, and fluid loss additive is (the Zhengzhou east CMC-LV
Auxiliary agent company), bridging-off agent is KGD (Henan Golden Horse petroleum science and technology company), and sealing agent is that (Henan Golden Horse petroleum science and technology is public by JHSD
Department).
The preparation method of the molten plugging drilling fluid of the theobromine of the present embodiment, comprising the following steps:
(1) first 5 parts of bentonites, 0.3 part of soda ash, 0.3 part of CMC-HV, 0.4 part of CMC-LV are uniformly mixed with 100 parts of water,
Obtain drilling fluid；
(2) 8 parts of KGD, 12 parts of JHSD are added sequentially in drilling fluid again, are uniformly mixed to get the molten leak stopping drilling well of theobromine
Liquid.
Embodiment 4
The molten plugging drilling fluid of the theobromine of the present embodiment, is grouped as by the group of following parts by weight: 7 parts of bentonite, soda ash 0.4
Part, 100 parts of water, mention 0.5 part of stick, 0.6 part of fluid loss additive, 3 parts of bridging-off agent, 8 parts of sealing agent.
It is CMC-HV (Zhengzhou east auxiliary agent company) that stick is mentioned in the present embodiment, and fluid loss additive is (the Zhengzhou east CMC-LV
Auxiliary agent company), bridging-off agent is KGD (Henan Golden Horse petroleum science and technology company), and sealing agent is that (Henan Golden Horse petroleum science and technology is public by JHSD
Department).
The preparation method of the molten plugging drilling fluid of the theobromine of the present embodiment, comprising the following steps:
(1) first 7 parts of bentonites, 0.4 part of soda ash, 0.5 part of CMC-HV, 0.6 part of CMC-LV are uniformly mixed with 100 parts of water,
Obtain drilling fluid；
(2) 3 parts of KGD, 8 parts of JHSD are added sequentially in drilling fluid again, are uniformly mixed to get the molten leak stopping drilling well of theobromine
Liquid.
Embodiment 5
The molten plugging drilling fluid of the theobromine of the present embodiment, is grouped as by the group of following parts by weight: 5 parts of bentonite, soda ash 0.3
Part, 100 parts of water, mention 0.3 part of stick, 0.4 part of fluid loss additive, 5 parts of bridging-off agent, 10 parts of sealing agent.
It is CMC-HV (Zhengzhou east auxiliary agent company) that stick is mentioned in the present embodiment, and fluid loss additive is (the Zhengzhou east CMC-LV
Auxiliary agent company), bridging-off agent is KGD (Henan Golden Horse petroleum science and technology company), and sealing agent is that (Henan Golden Horse petroleum science and technology is public by SSZ-1
Department).
The preparation method of the molten plugging drilling fluid of the theobromine of the present embodiment, comprising the following steps:
(1) first 5 parts of bentonites, 0.3 part of soda ash, 0.3 part of CMC-HV, 0.4 part of CMC-LV are uniformly mixed with 100 parts of water,
Obtain drilling fluid；
(2) 5 parts of KGD, 10 parts of SSZ-1 are added sequentially in drilling fluid again, are uniformly mixed to get plugging drilling fluid.
Embodiment 6
The molten plugging drilling fluid of the theobromine of the present embodiment, is grouped as by the group of following parts by weight: 5 parts of bentonite, soda ash 0.3
Part, 100 parts of water, mention 0.3 part of stick, 0.5 part of fluid loss additive, 4 parts of bridging-off agent, 12 parts of sealing agent.
It is CMC-HV (Zhengzhou east auxiliary agent company) that stick is mentioned in the present embodiment, and fluid loss additive is (the Zhengzhou east CMC-LV
Auxiliary agent company), bridging-off agent is KGD (Henan Golden Horse petroleum science and technology company), and sealing agent is that (Henan Golden Horse petroleum science and technology is public by SSZ-1
Department).
The preparation method of the molten plugging drilling fluid of the theobromine of the present embodiment, comprising the following steps:
(1) first 5 parts of bentonites, 0.3 part of soda ash, 0.3 part of CMC-HV, 0.5 part of CMC-LV are uniformly mixed with 100 parts of water,
Obtain drilling fluid；
(2) 4 parts of KGD, 12 parts of SSZ-1 are added sequentially in drilling fluid again, are uniformly mixed to get plugging drilling fluid.
Comparative example 1
The plugging drilling fluid of this comparative example is grouped as by the group of following parts by weight: 5 parts of bentonite, 0.3 part of soda ash, and water 100
Part, mention 0.4 part of stick, 0.6 part of fluid loss additive, 7 parts of bridging-off agent, 12 parts of sealing agent.
It is CMC-HV (Zhengzhou east auxiliary agent company) that stick is mentioned in the present embodiment, and fluid loss additive is (the Zhengzhou east CMC-LV
Auxiliary agent company), bridging-off agent is KGD (Henan Golden Horse petroleum science and technology company), and sealing agent is that (Henan Golden Horse petroleum science and technology is public by FFD-2
Department).
The preparation method of the plugging drilling fluid of this comparative example is referring to embodiment 6.
Test example
Plugging drilling fluid in Examples 1 to 6 and comparative example 1 carries out the molten test of acid, follows the steps below test: point
The drying filter cake 2.0g of plugging drilling fluid is not taken, and in mud acid, (hydrofluoric acid and concentration that concentration is 4% is respectively at room temperature
The mixed acid of 10% hydrochloric acid) in dissolve 3h, filtering, weigh surplus, calculate acid-soluble ratio.Test result is as shown in table 1.
The 1 molten test result of acid of table
| Project | Acid-soluble ratio (%) |
| Embodiment 1 | 94.3 |
| Embodiment 2 | 92.5 |
| Embodiment 3 | 91.8 |
| Embodiment 4 | 94.1 |
| Embodiment 5 | 93.6 |
| Embodiment 6 | 93.4 |
| Comparative example 1 | 82.7 |
As shown in Table 1, plugging drilling fluid of the invention is easily molten by acid, and acid-soluble ratio is 90% or more.
Claims (7)
1. a kind of molten plugging drilling fluid of theobromine, which is characterized in that be grouped as by the group of following parts by weight: 5~8 parts of bentonite, pure
0.3~0.4 part of alkali, 100 parts of water, mention 0.3~0.5 part of stick, 0.4~0.6 part of fluid loss additive, 3~10 parts of bridging-off agent, sealing agent
3~15 parts.
2. the molten plugging drilling fluid of theobromine according to claim 1, which is characterized in that be grouped as by the group of following parts by weight:
5~8 parts of bentonite, 0.3~0.4 part of soda ash, 100 parts of water, mention 0.3~0.5 part of stick, 0.4~0.6 part of fluid loss additive, bridge blinding
3~8 parts of agent, 6~12 parts of sealing agent.
3. the molten plugging drilling fluid of theobromine according to claim 1 or 2, it is characterised in that: it is described mention stick be CMC-HV,
At least one of 80A51.
4. the molten plugging drilling fluid of theobromine according to claim 1 or 2, it is characterised in that: the fluid loss additive be CMC-LV,
NH4At least one of HPAN.
5. the molten plugging drilling fluid of theobromine according to claim 1 or 2, it is characterised in that: the bridging-off agent is KGD, DF-II
At least one of.
6. the molten plugging drilling fluid of theobromine according to claim 1 or 2, it is characterised in that: the sealing agent is JHSD, ASC-
1, at least one of SSZ-1.
7. a kind of preparation method of the molten plugging drilling fluid of theobromine as claimed in claim 1 or 2, which is characterized in that including as follows
Step:
(1) first by bentonite, soda ash, mention stick, fluid loss additive and be uniformly mixed with clear water, obtain drilling fluid；
(2) bridging-off agent, sealing agent are added sequentially in above-mentioned drilling fluid again, are uniformly mixed to get the molten plugging drilling fluid of theobromine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044736.3A CN109135695A (en) | 2018-09-07 | 2018-09-07 | A kind of molten plugging drilling fluid of theobromine and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044736.3A CN109135695A (en) | 2018-09-07 | 2018-09-07 | A kind of molten plugging drilling fluid of theobromine and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109135695A true CN109135695A (en) | 2019-01-04 |
Family
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| CN201811044736.3A Pending CN109135695A (en) | 2018-09-07 | 2018-09-07 | A kind of molten plugging drilling fluid of theobromine and preparation method thereof |
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