CN109054779A - Drilling fluid reservoir protection sealing agent and preparation method thereof - Google Patents
Drilling fluid reservoir protection sealing agent and preparation method thereof Download PDFInfo
- Publication number
- CN109054779A CN109054779A CN201811073659.4A CN201811073659A CN109054779A CN 109054779 A CN109054779 A CN 109054779A CN 201811073659 A CN201811073659 A CN 201811073659A CN 109054779 A CN109054779 A CN 109054779A
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- sealing agent
- added
- protection sealing
- reservoir protection
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
Landscapes
- 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)
- Lubricants (AREA)
Abstract
The invention discloses a kind of drilling fluid reservoir protection sealing agents and preparation method thereof; by sequentially adding in the liquefied mixture of uniformly mixed non-fluorescence paraffin, nonionic surfactant and chain alkyl carboxylic acid lithium, initiated polymerization is obtained under alkaline condition after initiator, methyl methacrylate or methyl acrylate, acrylic or methacrylic acid, three kinds of polymerized monomers of acrylamide and crosslinking agent N, N '-methylene bisacrylamide acid imide for it；With reservoir protection sealing agent, nontoxic, unstressed configuration and voluntarily unseals, it can be achieved that effective closure to hole and microcrack the drilling fluid after a period of time has passed；Outstanding filtrate reducing function and anti-collapse function are also shown in drilling fluid simultaneously, and show good compatibility with a variety of drilling fluid systems.
Description
Technical field
The present invention relates to oil-gas resource exploration and development technical field, in particular to a kind of drilling fluid is protected with reservoir
Book jacket blocking agent and preparation method thereof.
Background technique
Reservoir protection is a technical problem in drilling process, and reservoir is mostly hole or the stratum that crack is more developed, and is bored
Drilling fluid of leaving during well enters reservoir, is bound to cause reservoir damage, seriously affects later period harvest efficiency.Traditional drilling well
Since there are the solid phase particles such as barite, clay in liquid, and comprising macromolecule difficult to degrade, cause to be very easy to cause reservoir
Hole or crack are blocked or blocked by polymer by barites, and then increase burden to later period reservoir reconstruction.Solve the problems, such as this
Effective ways be exactly into drilling fluid addition reservoir sealing agent, to reservoir carry out temporary plugging, i.e., in drilling process effectively
Prevent to enter reservoir to reservoir harmful substance in drilling fluid and drilling fluid, and to complete well after, sealing agent can voluntarily degrade
Or it is removed by simply processing.
Current container horizon protective agent, which has developed, detailed catalogue calcium carbonate, asphalitine, oil-soluble resin etc..But these materials are all
There are some weakness, such as: (1) calcium carbonate rigidity is stronger, causes it to block simultaneously imprecision to hole, still there is more drilling fluid meeting
It flows into reservoir；It (2) asphalitine or oil-soluble resin class product the problem of there are fluorescence and toxicity, can be to well logging and environmental protection
Certain influence is generated, and the deblocking of asphalitine or oil-soluble resin is more difficult.Therefore, research staff has asks for above-mentioned
Topic develops a kind of low Poison, reservoir protection sealing agent that is nontoxic and can unsealing automatically is of great significance.
Summary of the invention
The object of the present invention is to provide a kind of low Poison, drilling fluids that is nontoxic and can unsealing automatically to be sealed with reservoir protection
Blocking agent.
It is a further object of the present invention to provide a kind of preparation methods for preparing above-mentioned drilling fluid reservoir protection sealing agent.
For this purpose, technical solution of the present invention is as follows:
A kind of drilling fluid reservoir protection sealing agent, including in parts by weight 5~30 parts of unstressed configuration paraffin, 0.1~
0.5 portion of nonionic surfactant, 0.1~1 part of chain alkyl carboxylic acid lithium, 5~20 parts of starch, 0.001~0.05 part of initiation
Agent, 5~10 parts of methyl methacrylates or methyl acrylate, 5~10 parts of acrylic or methacrylic acids, 5~10 parts of acryloyls
Amine, 0.001~0.1 part of N, N '-methylene bisacrylamide acid imide, 25~60 parts of 10wt.% sodium hydrate aqueous solutions and 100~
150 parts of water.
It is preferred that the nonionic surfactant be OP-5, OP-6, OP-7, O-5, O-6, O-7, AEO-5, AEO-6,
One or more of AEO-7, Span-80, Span-60, Tween-80, Tween-60.
It is preferred that the starch is cornstarch.
It is preferred that the chain alkyl carboxylic acid lithium is oleic acid lithium, ricinoleic acid lithium or lithium stearate.
It is preferred that the initiator is potassium peroxydisulfate, Ammonium Persulfate 98.5 or AIBN.
A kind of drilling fluid preparation method of reservoir protection sealing agent, steps are as follows:
S1, unstressed configuration paraffin is added in a kettle and being warming up to 85~95 DEG C makes paraffin in molten condition, then to being in
Nonionic surfactant and chain alkyl carboxylic acid lithium are added in the paraffin of molten condition, stirring to three is uniformly mixed, obtains
The liquefied mixture I that temperature is 85~95 DEG C；
S2, the water that temperature is 85~95 DEG C is added into 85~95 DEG C of liquefied mixtures, high-speed stirred is opened, 85
Starch is added after being uniformly mixed under the conditions of~95 DEG C of temperature, continues to be stirred under the conditions of 85~95 DEG C of temperature to mixed
It closes uniformly, is subsequently cooled to 65~75 DEG C, obtains liquefied mixture II；
S3, under the conditions of nitrogen protection, initiator is added into 65~75 DEG C of liquefied mixture II, and 65~75
DEG C temperature under the conditions of stirring to be uniformly mixed, be then further continued for sequentially adding methyl methacrylate or methyl acrylate, third
Olefin(e) acid or methacrylic acid, acrylamide, N, N '-methylene bisacrylamide acid imide and 10wt.% sodium hydrate aqueous solution,
3~5h is reacted under the conditions of 65~75 DEG C；
S4, reservoir protection sealing agent will be arrived by step S3 products therefrom natural air drying, crushing.
It is preferred that the mixing time after water is added into liquefied mixture I is 30min, after starch is added in step S2
Mixing time is 30min.
It is preferred that the mixing time after initiator is added into liquefied mixture II is 10min in step S3.
It is preferred that the smashed grain diameter of product≤500 mesh.
The drilling fluid nontoxic, unstressed configuration with reservoir protection sealing agent can be realized to the hole and microcrack at deep-well section
Effective closure, and after a period of time, i.e. wellbore construction after the completion of voluntarily unseal；It is also shown in drilling fluid simultaneously
Outstanding filtrate reducing function and anti-collapse function, and good compatibility is shown with a variety of drilling fluid systems, have in oil
The good application value in drilling fluid field of field exploitation.
Specific embodiment
The present invention is described further combined with specific embodiments below, but following embodiments absolutely not have the present invention
Any restrictions.
Embodiment 1
In a kettle be added 5g unstressed configuration paraffin, 85 DEG C of heated for controlling temperature, under molten condition be added 0.1g OP-5 and
0.1g lithium stearate, stirs evenly, and 85 DEG C of distilled water of 100g are then added, and high-speed stirred simultaneously continues 85 DEG C of temperature control, 30min
Afterwards, 5g cornstarch is added, stirs 30min at 85 DEG C, is subsequently cooled to 65 DEG C, 0.001g persulfuric acid is added in nitrogen protection
Potassium stirs 10min at 65 DEG C, then sequentially adds 5g methyl methacrylate, 5g acrylic acid, 5g acrylamide, 0.001g
N, N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 25g continue to react 3h at 65 DEG C, natural air drying,
It is ground into particle of the partial size less than 500 mesh, reservoir protection sealing agent product can be obtained.
Embodiment 2
30g unstressed configuration paraffin is added in a kettle, 90 DEG C of heated for controlling temperature, 0.5g OP-5 and 1g are added under molten condition
Lithium stearate stirs evenly, and 90 DEG C of distilled water of 100g are then added, and high-speed stirred simultaneously continues 90 DEG C of temperature control, after 30min, adds
Entering 5g cornstarch, stir 30min at 90 DEG C, is subsequently cooled to 70 DEG C, 0.05g potassium peroxydisulfate is added in nitrogen protection,
10min is stirred at 70 DEG C, then sequentially adds 10g methyl methacrylate, 10g acrylic acid, 10g acrylamide, 0.1g N,
N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 60g, reacts 3h at 70 DEG C, and natural air drying is ground into
Reservoir protection sealing agent product can be obtained less than the particle of 500 mesh in partial size.
Embodiment 3
In a kettle be added 30g unstressed configuration paraffin, 95 DEG C of heated for controlling temperature, under molten condition be added 0.5g OP-7 and
0.6g lithium stearate, stirs evenly, and 95 DEG C of distilled water of 150g are then added, and high-speed stirred simultaneously continues 95 DEG C of temperature control, 30min
Afterwards, 20g cornstarch is added, stirs 30min at 95 DEG C, is subsequently cooled to 75 DEG C, the over cure of 0.05g is added in nitrogen protection
Sour potassium, stirs 10min at 75 DEG C, then sequentially add 10g methyl acrylate, 10g methacrylic acid, 10g acrylamide,
0.05g N, N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 50g, continuation react 4h under the conditions of 75 DEG C,
Natural air drying is ground into particle of the partial size less than 500 mesh, and reservoir protection sealing agent product can be obtained.
Embodiment 4
In a kettle be added 20g unstressed configuration paraffin, 90 DEG C of heated for controlling temperature, under molten condition be added 0.5g O-6 and
0.6g oleic acid lithium, stirs evenly, and 90 DEG C of distilled water of 120g are then added, and high-speed stirred simultaneously continues 90 DEG C of temperature control, after 30min,
15g cornstarch is added, maintains 90 DEG C of stirring 30min, is subsequently cooled to 70 DEG C, 0.025g persulfuric acid is added in nitrogen protection
Ammonium, stirs 10min at 70 DEG C, then sequentially add 8g methyl methacrylate, 8g methacrylic acid, 1g acrylamide,
5h is reacted in 0.06g N, N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 42g, continuation at 70 DEG C, natural
It air-dries, is ground into particle of the partial size less than 500 mesh, reservoir protection sealing agent product can be obtained.
Embodiment 5
In a kettle be added 20g unstressed configuration paraffin, 85 DEG C of heated for controlling temperature, under molten condition be added 0.5g AEO-7 and
0.7g lithium stearate, stirs evenly, and 85 DEG C of distilled water of 100g are then added, and high-speed stirred simultaneously continues 85 DEG C of temperature control, 30min
Afterwards, 20g cornstarch is added, stirs 30min at 85 DEG C, is subsequently cooled to 65 DEG C, 0.03g AIBN is added in nitrogen protection,
Continuation stirs 10min under the conditions of 65 DEG C, then sequentially adds 10g methyl methacrylate, 5g acrylic acid, 10g acryloyl
Amine, 0.01g N, N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 30g, continuation are reacted under the conditions of 65 DEG C
4h, natural air drying are ground into particle of the partial size less than 500 mesh, and reservoir protection sealing agent product can be obtained.
Embodiment 6
In a kettle be added 20g unstressed configuration paraffin, 85 DEG C of heated for controlling temperature, under molten condition be added 0.5g Span-80 and
1g lithium stearate, stirs evenly, and 90 DEG C of distilled water of 100g are then added, and high-speed stirred simultaneously continues 90 DEG C of temperature control, after 30min,
20g cornstarch is added, stirs 30min at 90 DEG C, is subsequently cooled to 65 DEG C, 0.03g potassium peroxydisulfate is added in nitrogen protection,
Continuation stirs 10min under the conditions of 65 DEG C, then sequentially adds 10g methyl methacrylate, 6g acrylic acid, 10g acryloyl
Amine, 0.02g N, N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 32g, continuation are reacted under the conditions of 65 DEG C
4h, natural air drying are ground into particle of the partial size less than 500 mesh, and reservoir protection sealing agent product can be obtained.
Embodiment 7
20g unstressed configuration paraffin is added in a kettle, 85 DEG C of heated for controlling temperature, 0.5g Tween-60 is added under molten condition
It with 0.8g lithium stearate, stirs evenly, 85 DEG C of distilled water of 120g is then added, high-speed stirred simultaneously continues 85 DEG C of temperature control, 30min
Afterwards, 20g cornstarch is added, in 85 DEG C of stirring 30min, is subsequently cooled to 65 DEG C, 0.03g persulfuric acid is added in nitrogen protection
Ammonium, continuation stir 10min under the conditions of 65 DEG C, then sequentially add 10g methyl methacrylate, 6g methacrylic acid, 10g
Acrylamide, 0.03g N, N '-methylene bisacrylamide acid imide, 10% sodium hydrate aqueous solution of 30g continue in 65 DEG C of conditions
Lower reaction 4h, natural air drying are ground into particle of the partial size less than 500 mesh, and reservoir protection sealing agent product can be obtained.
Performance test:
(1) rheological property and filtrate loss controllability test:
Specific test method are as follows: be added into 7 parts of base slurries account for production prepared by the embodiment 1-7 of base slurry gross mass 3% respectively
Product, and high-speed stirred 20min, the base slurry for being then blended with reservoir protection sealing agent are packed into ageing can, pour 1MPa nitrogen,
It is added in electric heating roller furnace after being sealed, is arranged 160 DEG C of temperature, rolling time 16h is then cooled to room temperature to be measured.Wherein,
Base slurry by after 100 parts of distilled water, 0.2 part of natrium carbonicum calcinatum and 4 parts of Xuanhua bentonite high-speed stirred 20min at room temperature
Static aquation is formulated for 24 hours.Test result is as shown in table 1.
Table 1: the rheological property and filtrate loss controllability of the drilling fluid reservoir protection sealing agent product of embodiment 1-7 preparation
From table 1 it follows that the drilling fluid reservoir protection sealing agent that embodiment 1-7 preparation is added in base slurry produces
After product, significant change does not occur for the rheological property of base slurry, while filtrate reducing effect is obvious.
(2) cloud point test:
For drilling fluid reservoir protection sealing agent, the cloud point of sealing agent is one important performance indicator.Tool
For body, the cloud point of sealing agent be distributed between 60~90 DEG C it is ideal, this is because collapse accident mostly occurs in 3000m
Above deep-well section, formation temperature generally reach 100 DEG C or more, therefore it is required that solubility reduces sealing agent at the formation temperature
It is precipitated, to block the nanoscale hole on stratum, plays good plugging action；And when circulation of drilling fluid is to ground, temperature
Degree there is the sealing agent of ideal cloud point distribution can be completely dissolved again at this temperature, and then reduce about at 50 DEG C or so
Because polymeric alcohol caused by solid controlling process loses.
Sealing agent cloud point test method: each 0.2g of reservoir protection sealing agent for weighing embodiment 1-7 preparation is added to difference
Test tube in, then in each test tube be added 10mL aqueous solvent.Heating water bath, the solution observed in 7 test tubes become turbid
When temperature, then natural cooling again, observes temperature when muddy disappear.Two temperatures section is the cloud point of product.Test knot
Fruit as shown in table 2,
Table 2: the cloud point test result of the reservoir protection sealing agent product of embodiment 1-7 preparation
| Embodiment | Cloud point (DEG C) |
| Embodiment 1 | 86‐90 |
| Embodiment 2 | 75‐78 |
| Embodiment 3 | 90‐93 |
| Embodiment 4 | 78‐82 |
| Embodiment 5 | 85‐89 |
| Embodiment 6 | 80‐84 |
| Embodiment 7 | 88‐91 |
As can be seen that the cloud point test result of the reservoir protection sealing agent product of embodiment 1-7 preparation is equal from upper table 2
The performance indicator for meeting drilling fluid sealing agent requirement can be realized effective closure to hole and microcrack at deep-well section,
And after a period of time, i.e. wellbore construction after the completion of voluntarily unseal.
(3) shale landwaste determination of recovery rates:
The landwaste of shore depth 24-5-27 well 3228-3546m well section is selected to be tested.Method particularly includes: choose embodiment
The reservoir protection sealing agent product of 1-3 preparation weighs suitable product and water is added to be configured to the aqueous solution of 1wt.%；Then every
The aqueous solution of embodiment products configuration and landwaste are placed in same ageing can by the secondary landwaste 40g for taking 6~10 mesh, in certain temperature
After the lower heat rolling 16h of degree, sieve takes 40 mesh landwaste, and landwaste rolling rate of recovery, experimental result such as table 3 are calculated after 105 ± 3 DEG C of drying
It is shown.
Table 3:
As shown in table 3, with reservoir protection sealing agent, dosage is 1wt.% feelings to the drilling fluid of embodiment 1-3 preparation in water
Under condition, for shale rolling rate of recovery 90% or more, temperature resistance has good stable shale performance and temperature resistance up to 180 DEG C
Energy.
Claims (9)
1. a kind of drilling fluid reservoir protection sealing agent, which is characterized in that 5~30 parts of unstressed configuration paraffin, 0.1 in parts by weight
~0.5 portion of nonionic surfactant, 0.1~1 part of chain alkyl carboxylic acid lithium, 5~20 parts of starch, 0.001~0.05 part of initiation
Agent, 5~10 parts of methyl methacrylates or methyl acrylate, 5~10 parts of acrylic or methacrylic acids, 5~10 parts of acryloyls
Amine, 0.001~0.1 part of N, N '-methylene bisacrylamide acid imide, 25~60 parts of 10wt.% sodium hydrate aqueous solutions and 100~
150 parts of water.
2. drilling fluid according to claim 1 reservoir protection sealing agent, which is characterized in that the non-ionic surface active
Agent be OP-5, OP-6, OP-7, O-5, O-6, O-7, AEO-5, AEO-6, AEO-7, Span-80, Span-60, Tween-80,
One or more of Tween-60.
3. drilling fluid according to claim 1 reservoir protection sealing agent, which is characterized in that the starch is corn shallow lake
Powder.
4. drilling fluid according to claim 1 reservoir protection sealing agent, which is characterized in that the chain alkyl carboxylic acid lithium
For oleic acid lithium, ricinoleic acid lithium or lithium stearate.
5. drilling fluid according to claim 1 reservoir protection sealing agent, which is characterized in that the initiator is persulfuric acid
Potassium, Ammonium Persulfate 98.5 or AIBN.
6. a kind of preparation method of drilling fluid as described in claim 1 reservoir protection sealing agent, which is characterized in that step is such as
Under:
S1, unstressed configuration paraffin is added in a kettle and being warming up to 85~95 DEG C makes paraffin in molten condition, then in melting
Nonionic surfactant and chain alkyl carboxylic acid lithium are added in the paraffin of state, stirring to three is uniformly mixed, and obtains temperature
For 85~95 DEG C of liquefied mixture I；
S2, the water that temperature is 85~95 DEG C is added into 85~95 DEG C of liquefied mixtures, high-speed stirred is opened, at 85~95 DEG C
Temperature under the conditions of be uniformly mixed after be added starch, continue under the conditions of 85~95 DEG C of temperature stirring to being uniformly mixed,
65~75 DEG C are subsequently cooled to, liquefied mixture II is obtained；
S3, under the conditions of nitrogen protection, initiator is added into 65~75 DEG C of liquefied mixture II, and in 65~75 DEG C of temperature
Stirring is to being uniformly mixed under the conditions of degree, be then further continued for sequentially adding methyl methacrylate or methyl acrylate, acrylic acid or
Methacrylic acid, acrylamide, N, N '-methylene bisacrylamide acid imide and 10wt.% sodium hydrate aqueous solution, at 65~75 DEG C
Under the conditions of react 3~5h；
S4, reservoir protection sealing agent will be arrived by step S3 products therefrom natural air drying, crushing.
7. drilling fluid according to claim 6 reservoir protection sealing agent, which is characterized in that mixed to liquid in step S2
Closing the mixing time after water is added in object I is 30min, and the mixing time after starch is added is 30min.
8. drilling fluid according to claim 6 reservoir protection sealing agent, which is characterized in that mixed to liquid in step S3
Closing the mixing time after initiator is added in object II is 10min.
9. drilling fluid according to claim 6 reservoir protection sealing agent, which is characterized in that the smashed particle of product
Diameter≤500 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811073659.4A CN109054779A (en) | 2018-09-14 | 2018-09-14 | Drilling fluid reservoir protection sealing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811073659.4A CN109054779A (en) | 2018-09-14 | 2018-09-14 | Drilling fluid reservoir protection sealing agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109054779A true CN109054779A (en) | 2018-12-21 |
Family
ID=64761791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811073659.4A Withdrawn CN109054779A (en) | 2018-09-14 | 2018-09-14 | Drilling fluid reservoir protection sealing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109054779A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079288A (en) * | 2019-06-04 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of dilatancy diverting agent and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664816A (en) * | 1985-05-28 | 1987-05-12 | Texaco Inc. | Encapsulated water absorbent polymers as lost circulation additives for aqueous drilling fluids |
| CA2583484A1 (en) * | 2006-03-30 | 2007-07-09 | Canadian Energy Services L.P. | Drilling fluid and method for reducing lost circulation |
| CN102146280A (en) * | 2011-02-28 | 2011-08-10 | 西南石油大学 | Controllable expanded plugging agent |
| CN103146362A (en) * | 2013-04-09 | 2013-06-12 | 石家庄华莱鼎盛科技有限公司 | Broad spectrum type high-efficient blocking agent for drilling fluid |
| CN103694970A (en) * | 2014-01-14 | 2014-04-02 | 河南金马石油科技有限责任公司 | Paraffin emulsion and preparation method thereof |
| CN103980867A (en) * | 2014-05-14 | 2014-08-13 | 中国石油集团渤海钻探工程有限公司 | Low-temperature resistant nanometer paraffin emulsion and preparation method thereof |
| CN105670580A (en) * | 2014-11-21 | 2016-06-15 | 中石化胜利石油工程有限公司钻井工艺研究院 | Micro-nano blocking agent and preparation method thereof |
| CN107312506A (en) * | 2016-04-26 | 2017-11-03 | 中国石油化工股份有限公司 | A kind of drilling fluid emulsified wax, preparation method and method for estimating stability |
| CN108219069A (en) * | 2017-12-15 | 2018-06-29 | 天津城建大学 | A kind of degradable anti-collapse material of the modified starch based polyalcohol borehole wall and preparation method thereof |
| CN108485613A (en) * | 2018-05-09 | 2018-09-04 | 天津市大港渤中石油助剂有限公司 | Drilling fluid sealing agent low Poison albino bitumen |
-
2018
- 2018-09-14 CN CN201811073659.4A patent/CN109054779A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664816A (en) * | 1985-05-28 | 1987-05-12 | Texaco Inc. | Encapsulated water absorbent polymers as lost circulation additives for aqueous drilling fluids |
| CA2583484A1 (en) * | 2006-03-30 | 2007-07-09 | Canadian Energy Services L.P. | Drilling fluid and method for reducing lost circulation |
| CN102146280A (en) * | 2011-02-28 | 2011-08-10 | 西南石油大学 | Controllable expanded plugging agent |
| CN103146362A (en) * | 2013-04-09 | 2013-06-12 | 石家庄华莱鼎盛科技有限公司 | Broad spectrum type high-efficient blocking agent for drilling fluid |
| CN103694970A (en) * | 2014-01-14 | 2014-04-02 | 河南金马石油科技有限责任公司 | Paraffin emulsion and preparation method thereof |
| CN103980867A (en) * | 2014-05-14 | 2014-08-13 | 中国石油集团渤海钻探工程有限公司 | Low-temperature resistant nanometer paraffin emulsion and preparation method thereof |
| CN105670580A (en) * | 2014-11-21 | 2016-06-15 | 中石化胜利石油工程有限公司钻井工艺研究院 | Micro-nano blocking agent and preparation method thereof |
| CN107312506A (en) * | 2016-04-26 | 2017-11-03 | 中国石油化工股份有限公司 | A kind of drilling fluid emulsified wax, preparation method and method for estimating stability |
| CN108219069A (en) * | 2017-12-15 | 2018-06-29 | 天津城建大学 | A kind of degradable anti-collapse material of the modified starch based polyalcohol borehole wall and preparation method thereof |
| CN108485613A (en) * | 2018-05-09 | 2018-09-04 | 天津市大港渤中石油助剂有限公司 | Drilling fluid sealing agent low Poison albino bitumen |
Non-Patent Citations (3)
| Title |
|---|
| ROBERT: "A New Generation Associative Polymer Extends Temperature Stability Of Deepwater Drilling Fluid", 《INTERNATIONAL PETROLEUM TECHNOLOGY CONFERENCE, 15-17 NOVEMBER》 * |
| 史建刚: "《胜利油区油气层保护技术》", 31 December 2009, 第139页 * |
| 郭建彬: "分步乳化法在制备乳化石蜡中的应用", 《科技风》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079288A (en) * | 2019-06-04 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of dilatancy diverting agent and preparation method thereof |
| CN110079288B (en) * | 2019-06-04 | 2021-10-15 | 中国石油化工股份有限公司 | Expansive temporary plugging agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4664816A (en) | Encapsulated water absorbent polymers as lost circulation additives for aqueous drilling fluids | |
| CN103937471B (en) | Temperature resistance drilling fluid plugging agent while drilling and preparation method thereof | |
| EP0156030B1 (en) | Aqueous drilling fluid | |
| US6581701B2 (en) | Methods for reducing lost circulation in wellbores | |
| CA2920932C (en) | Cationic copolymer and use thereof in lost circulation additive | |
| US7696304B2 (en) | Thermally stable water-soluble polymer which is crosslinkable at high temperatures | |
| US20130255951A1 (en) | Compositions, Systems and Methods for Releasing Additive Components | |
| CN112877045B (en) | Bulk-swelling efficient slug gel plugging agent and preparation method thereof | |
| NO316235B1 (en) | Method for controlling fluid loss in permeable formations drilled by boreholes | |
| CN105733532B (en) | Thick pons hematoma agent and leakage-stop liquid and preparation method thereof in the molten type mineral fibres of acid | |
| CN105733533B (en) | The thin pons hematoma agent of the molten type mineral fibres of acid and leakage-stop liquid and preparation method thereof | |
| CN104498008B (en) | A kind of biological profile-controlling and plugging agent of oilfield exploitation high temperature resistant | |
| WO2012061147A1 (en) | Salt-tolerant, thermally-stable rheology modifiers | |
| CN103146372A (en) | Inverse emulsion polymer thickener for fracturing fluid and preparation method thereof | |
| CN107586360B (en) | A kind of Star Polyacrylamide copolymer and preparation method thereof and drilling fluid | |
| CN106566491B (en) | A kind of starch/Nano-meter SiO_22Plural gel and the preparation method and application thereof | |
| MX2008014339A (en) | Weighted zero solids loss circulation, fluid loss and insulating annular space fluid systems. | |
| CN105154030B (en) | A kind of drilling fluid inorganic organic polymer inorganic agent and preparation method thereof | |
| CN108587580A (en) | Drilling fluid high-temperature salt-resistant fluid loss additive modified gum resin and preparation method thereof | |
| CN105038732B (en) | Drilling fluid lubrication sealing agent and preparation method thereof and application method | |
| CN109054779A (en) | Drilling fluid reservoir protection sealing agent and preparation method thereof | |
| CN107033860A (en) | A kind of potassium chloride polymer drilling fluid | |
| CN100485159C (en) | Air well single-way closing agent and its formulating method | |
| WO2015042026A1 (en) | High temperature stable linear polymers | |
| CN106565901A (en) | Crosslinked high molecular weight polymer coating agents for water-based drilling fluids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181221 |