CN105062435B - Coal bed gas horizontal well small molecule drilling fluid - Google Patents
Coal bed gas horizontal well small molecule drilling fluid Download PDFInfo
- Publication number
- CN105062435B CN105062435B CN201510457966.2A CN201510457966A CN105062435B CN 105062435 B CN105062435 B CN 105062435B CN 201510457966 A CN201510457966 A CN 201510457966A CN 105062435 B CN105062435 B CN 105062435B
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- small molecule
- water
- polymer
- coal
- 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.)
- Expired - Fee Related
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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
-
- 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
- C09K2208/34—Lubricant additives
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A kind of coal bed gas horizontal well small molecule drilling fluid, by the material composition of following mass fraction：1.0~2.0% hole stability agent, 0.05~0.1% flocculant, 0.5~1.0% lubricant, surplus are water.Its advantage is：Regular coal seam borehole wall ability is strong, and methane output is high, solves the contradiction between coal bed gas horizontal well hole collapse and coal seam protection；Reduce frictional resistance, remove useless solid phase, coal seam protecting effect is better than clear water and polymer drilling fluid；The lubricity of small molecule drilling fluid and flocculation ability are close to polymer drilling fluid.
Description
Technical field
The present invention relates to CBM Drilling field of engineering technology, specifically a kind of coal bed gas horizontal well small molecule drilling well
Liquid.
Background technology
Cbm development comes into the booming stage in China, but China's coal bed gas well yield is generally relatively low, is
Cost, increase operating efficiency are reduced, in the exploitation of coal bed gas and drillng operation, drilling fluid uses " low cost strategy ".
For the exploitation of coal bed gas, operator firstly the need of consideration be coal seam protecting effect and economy, because
This uses clear water to be become as drilling fluid drilling well as primary selection.Wash boring liquid has low cost, Solid Free, is advantageous to coal seam
Protection and the advantage such as can gather materials on the spot, are widely used in straight well and horizontal well；But in areas such as such as Qinshui Basin In Shanxi Provinces, profit
The drilling well in coal seam section with clear water, easily there are the serious accidents such as well collapses and burying has, so as to cause huge economic loss.
In addition, with clear water can not normal drilling well when, operator uses for reference the polymer drilling fluid that uses in oil/gas drilling, though
Right polymer drilling fluid regular coal seam borehole wall ability is strong, and drillng operation is more smooth, but coal seam infringement is serious, yield after mining
Relatively low, some wells even hold one's breath, and therefore, while ensure the stabilization of the coal seam borehole wall and the shielded problems demand solution of coal seam reservoir
Certainly.
The content of the invention
In order to overcome above-mentioned technological deficiency, it is an object of the invention to provide a kind of component is simple, applied widely, cost
It is low, borehole wall stability strong and can in coal seam can be made to make the coal bed gas horizontal well small molecule drilling fluid of reinforcement coal seam protecting effect.
A kind of coal bed gas horizontal well small molecule drilling fluid of the present invention, by the material composition of following mass fraction：1.0~
2.0% hole stability agent, 0.05~0.1% flocculant, 0.5~1.0% lubricant, surplus are water.
The advantages of coal bed gas horizontal well small molecule drilling fluid of the present invention is：Regular coal seam borehole wall ability is strong, methane output
Height, solves the contradiction between coal bed gas horizontal well hole collapse and coal seam protection；Reduce frictional resistance, remove useless solid phase, coal seam
Protecting effect is better than clear water and polymer drilling fluid；The lubricity of small molecule drilling fluid and flocculation ability are close to polymer drilling well
Liquid.
Embodiment
A kind of coal bed gas horizontal well small molecule drilling fluid of the present invention, by the material composition of following mass fraction：1.0~
2.0% hole stability agent, 0.05~0.1% flocculant, 0.5~1.0% lubricant, surplus are water.
Preferably, the hole stability agent is ethyl diethylenetriamine, and its molecular formula is H2NCH2CH2N(CH2CH2OH)
CH2CH2NH2, the inorganic agent contains amido and hydroxyl, can firmly adsorb on clay mineral surface, prevent clay mineral aquation,
Therefore there is very strong inhibition, to improve the borehole wall stability of small molecule drilling fluid, reduces potential safety hazard；
Preferably, the flocculant is in aluminium polychloride or polyaluminium sulfate, bodied ferric sulfate, poly-ferric chloride
One kind, adsorptivity, coherency, sedimentation function are good.
Preferably, the lubricant is polyethylene glycol, and its molecular weight is 200 to 600, is liquid-state viscosity fluid, is soluble in
Water, frictional resistance during horizontal well drilling is reduced, so as to improve the greasy property of drilling fluid.
Below in conjunction with specific embodiment, the invention will be further described：
Embodiment one：
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 2.0% hole stability agent,
0.1% flocculant, 1% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in water；It is to be added
Inorganic agent in water fully dissolving after stand 2 hours；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the wash boring liquid of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, enter when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and wash boring liquid
Row performance measurement；
3., performance measurement result：If table 1 to table 3 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
It can compare.
The small molecule drilling fluid conventional performance index of table 1
The small molecule drilling fluid coal seam protecting effect of table 2
The small molecule drilling fluid of table 3 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 4# | Air | 15.36 |
| 5# | Small molecule drilling fluid | 11.66 |
| 6# | Clear water | 6.40 |
| 7# | Polymer drilling fluid | 12.88 |
Embodiment two：
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 1.5% hole stability agent,
0.1% flocculant, 1% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in water；It is to be added
Inorganic agent in water fully dissolving after stand 2 hours；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the clear water of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, performance is carried out when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and clear water
Measure；
3., performance measurement result：If table 4 to table 6 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
It can compare.
The small molecule drilling fluid conventional performance index of table 4
The small molecule drilling fluid coal seam protecting effect of table 5
The small molecule drilling fluid of table 6 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 11# | Air | 15.36 |
| 12# | Small molecule drilling fluid | 11.66 |
| 13# | Clear water | 6.40 |
| 14# | Polymer drilling fluid | 12.88 |
Embodiment three：
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 1.5% hole stability agent,
0.075% flocculant, 0.75% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in clear water；
Inorganic agent to be added stands 2 hours after fully being dissolved in water；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the clear water of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, performance survey is carried out when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and water
It is fixed；
3., performance measurement result：If table 7 to table 9 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
It can compare.
The small molecule drilling fluid conventional performance index of table 7
The small molecule drilling fluid coal seam protecting effect table of table 8
The small molecule drilling fluid of table 9 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 18# | Air | 17.34 |
| 19# | Small molecule drilling fluid | 13.98 |
| 20# | Clear water | 11.35 |
| 21# | Polymer drilling fluid | 15.22 |
Example IV：
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 2.0% hole stability agent,
0.05% flocculant, 0.6% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in clear water；Treat
The inorganic agent of addition stands 2 hours after fully being dissolved in water；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the clear water of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, performance survey is carried out when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and water
It is fixed；
3., performance measurement result：If table 10 to table 12 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
Performance comparision.
The small molecule drilling fluid conventional performance index of table 10
The small molecule drilling fluid coal seam protecting effect table of table 11
The small molecule drilling fluid of table 12 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 25# | Air | 18.35 |
| 26# | Small molecule drilling fluid | 14.95 |
| 27# | Clear water | 11.57 |
| 28# | Polymer drilling fluid | 16.68 |
Embodiment five：
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 1.0% hole stability agent,
0.05% flocculant, 0.5% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in clear water；Treat
The inorganic agent of addition stands 2 hours after fully being dissolved in clear water；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the clear water of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, performance survey is carried out when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and water
It is fixed；
3., performance measurement result：If table 13 to table 15 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
Performance comparision.
The small molecule drilling fluid conventional performance index of table 13
The small molecule drilling fluid coal seam protecting effect table of table 14
The small molecule drilling fluid of table 15 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 32# | Air | 18.50 |
| 33# | Small molecule drilling fluid | 15.21 |
| 34# | Clear water | 10.44 |
| 35# | Polymer drilling fluid | 16.02 |
Embodiment six
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 1.0% hole stability agent,
0.05% flocculant, 1.0% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in clear water；Treat
The inorganic agent of addition stands 2 hours after fully being dissolved in water；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the clear water of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, performance survey is carried out when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and water
It is fixed；
3., performance measurement result：If table 16 to table 18 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
Performance comparision.
The small molecule drilling fluid conventional performance index of table 16
The small molecule drilling fluid coal seam protecting effect table of table 17
The small molecule drilling fluid of table 18 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 39# | Air | 17.34 |
| 40# | Small molecule drilling fluid | 13.98 |
| 41# | Clear water | 11.35 |
| 42# | Polymer drilling fluid | 15.22 |
Embodiment seven：
Small molecule drilling fluid is tested with the performance comparison of polymer drilling fluid and wash boring liquid, wherein, polymer bores
Well liquid is 0.1% soda ash, 0.2% xanthans, 0.2% polyacrylamide, and surplus is water；Wash boring liquid, polymer drilling fluid
Volume it is identical with small molecule drilling fluid,
Test procedure is as follows：
1., the configuration technique of small molecule drilling fluid：Take appropriate water, sequentially add while stirring 1.0% hole stability agent,
0.1% flocculant, 0.5% lubricant；The inorganic agent of addition is the inorganic agent of small molecule, and dissolution velocity is fast in clear water；Treat
The inorganic agent of addition stands 2 hours after fully being dissolved in water；
Similarly, the configuration technique of polymer drilling fluid：Take appropriate water, sequentially add while stirring 0.1% soda ash,
0.2% xanthans, 0.2% polyacrylamide, dissolution velocity is fast in water；After inorganic agent to be added fully dissolves in water
Stand 2 hours；
Similarly, the clear water of above-mentioned small molecule drilling fluid same volume is taken；
2., performance measurement：According to《GB/T16783.1-2006 industrial gas oil drilling fluid on-the-spot test part 1s
Water-base drilling fluid》Perform, performance survey is carried out when being used respectively in drilling well small molecule drilling fluid, polymer drilling fluid and water
It is fixed；
3., performance measurement result：If table 19 to table 21 is the small molecule drilling fluid items with polymer drilling fluid, water respectively
Performance comparision.
The small molecule drilling fluid conventional performance index of table 19
The small molecule drilling fluid coal seam protecting effect table of table 20
The small molecule drilling fluid of table 21 is to coal petrography intensity effect
| Coal core number | Soak medium | Uniaxial compressive strength/MPa |
| 46# | Air | 18.50 |
| 47# | Small molecule drilling fluid | 15.21 |
| 48# | Clear water | 10.44 |
| 49# | Polymer drilling fluid | 16.02 |
From above-described embodiment one into embodiment seven, result of the test shows：
Table 1, table 4, table 7, table 10, table 13, table 16, the experiment of table 19 prove that the viscosity of small molecule drilling fluid is bored close to clear water
Well liquid, and significantly lower than the viscosity of polymer drilling fluid；Small molecule drilling fluid lubricating performance is significantly better than that clearly with flocculation ability
Aqueous drilling fluid, and it is about the same with polymer drilling fluid, small molecule drilling fluid reduces frictional resistance during horizontal well drilling,
Remove injury of the useless solid phase to coal seam simultaneously；(drilling fluid flocculation ability evaluation method is with reference to oil and gas industry standard SY/
T5796-93《Flocculant evaluation method》, when after 6% kaolin solution being mixed in equal volume with drilling fluid with kaolinic sedimentation
Between characterize)
Ka is coal heart air permeability in table 2, table 5, table 8, table 11, table 14, table 17, table 20, and Ko is that coal heart layer water oozes
Saturating rate, Kd are the stratum water penetration rate of the coal heart after pollution, and Kd/Ko is the permeability resume figure of the coal heart；The Kd/Ko bigger expression of value
The coal heart is smaller by drilling fluid contamination degree；The coal seam positive effect of small molecule drilling fluid protecting is better than polymer drilling fluid and clear water
Drilling fluid；
In table 3, table 6, table 9, table 12, table 15, table 18, table 21 for the coal heart pressurize in different medium soak 24 hours after
Uniaxial compressive strength, uniaxial compressive strength is bigger, and coal heart stability is better, test result indicates that, small molecule drilling fluid stability is bright
It is aobvious to be better than clear water, and it is about the same with the viscosity of polymer drilling fluid；The coal heart number in each table is numbering.
The advantages of coal bed gas horizontal well small molecule drilling fluid of the present invention is：Regular coal seam borehole wall ability is strong, methane output
Height, solves the contradiction between coal bed gas horizontal well hole collapse and coal seam protection；Reduce frictional resistance, remove useless solid phase, coal seam
Protecting effect is better than clear water and polymer drilling fluid；The lubricity of small molecule drilling fluid and flocculation ability are close to polymer drilling well
Liquid.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (2)
- A kind of 1. coal bed gas horizontal well small molecule drilling fluid, it is characterised in that：By the material composition of following mass fraction：1.0~ 2.0% hole stability agent, 0.05~0.1% flocculant, 0.5~1.0% lubricant, surplus are water；The hole stability agent is ethoxy diethylenetriamine；The flocculant is one kind in aluminium polychloride or polyaluminium sulfate, bodied ferric sulfate, poly-ferric chloride；The lubricant is polyethylene glycol.
- 2. coal bed gas horizontal well small molecule drilling fluid according to claim 1, it is characterised in that：Point of the polyethylene glycol Son amount is 200 to 600, is liquid-state viscosity fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457966.2A CN105062435B (en) | 2015-07-29 | 2015-07-29 | Coal bed gas horizontal well small molecule drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457966.2A CN105062435B (en) | 2015-07-29 | 2015-07-29 | Coal bed gas horizontal well small molecule drilling fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105062435A CN105062435A (en) | 2015-11-18 |
| CN105062435B true CN105062435B (en) | 2017-12-29 |
Family
ID=54491965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510457966.2A Expired - Fee Related CN105062435B (en) | 2015-07-29 | 2015-07-29 | Coal bed gas horizontal well small molecule drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105062435B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108276978A (en) * | 2018-04-02 | 2018-07-13 | 中国矿业大学(北京) | A kind of underground coal mine is with boring anti-collapse type flushing liquor and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3127344A (en) * | 1964-03-31 | Cshjoh | ||
| US5558171A (en) * | 1994-04-25 | 1996-09-24 | M-I Drilling Fluids L.L.C. | Well drilling process and clay stabilizing agent |
| CN102002349A (en) * | 2010-11-12 | 2011-04-06 | 中国海洋石油总公司 | Seawater-based polyamine well completion fluid and preparation method thereof |
| CN103525381A (en) * | 2012-07-04 | 2014-01-22 | 长江大学 | Horizontal well drilling fluid for protecting coal bed gas reservoir |
| CN103773327A (en) * | 2013-12-20 | 2014-05-07 | 长江大学 | Solid-free active salt water drilling fluid for coalbed methane (CBM) horizontal wells |
-
2015
- 2015-07-29 CN CN201510457966.2A patent/CN105062435B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3127344A (en) * | 1964-03-31 | Cshjoh | ||
| US5558171A (en) * | 1994-04-25 | 1996-09-24 | M-I Drilling Fluids L.L.C. | Well drilling process and clay stabilizing agent |
| CN102002349A (en) * | 2010-11-12 | 2011-04-06 | 中国海洋石油总公司 | Seawater-based polyamine well completion fluid and preparation method thereof |
| CN103525381A (en) * | 2012-07-04 | 2014-01-22 | 长江大学 | Horizontal well drilling fluid for protecting coal bed gas reservoir |
| CN103773327A (en) * | 2013-12-20 | 2014-05-07 | 长江大学 | Solid-free active salt water drilling fluid for coalbed methane (CBM) horizontal wells |
Non-Patent Citations (1)
| Title |
|---|
| 聚胺强抑制剂研制及其作用机理研究;钟汉毅;《中国石油大学博士学位论文》;20150615;12-13 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105062435A (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102070909B (en) | Cation modified asphalt and preparation method thereof | |
| US10745605B2 (en) | Plugging agent for temperature-resistant calcium-resistant water-based drilling fluid used in oil and gas reservoir protection, drilling fluid, and uses thereof | |
| CN102250595B (en) | Drilling fluid used for active mud shale drilling | |
| CN101429424B (en) | Di-kalium ion-polymer drilling fluid with strong rejection capability | |
| CN102851008B (en) | Carbonate drilling fluid | |
| CN110041901A (en) | A kind of drilling fluid and preparation method thereof for brokenness igneous rock formation drilling | |
| CN109233762A (en) | A kind of drilling fluid, preparation method and application | |
| CN105969323B (en) | A kind of shale gas horizontal well high-density water-based drilling fluid | |
| CN103194189B (en) | A kind of drilling fluid protecting coalbed methane reservoir | |
| Jiang et al. | Super-amphiphobic, strong self-cleaning and high-efficiency water-based drilling fluids | |
| Murtaza et al. | Optimum selection of H2S scavenger in light-weight and heavy-weight water-based drilling fluids | |
| CN105062435B (en) | Coal bed gas horizontal well small molecule drilling fluid | |
| US9528043B2 (en) | Compositions and methods for treatment of well bore tar | |
| CN1548498A (en) | Oil layer protecting drilling fluid without clay | |
| US10961441B2 (en) | Acidizing solution for dissolution of clay mineral and preparation method thereof | |
| CN109456750A (en) | Environment-friendly type coiled tubing drag reducer | |
| CN103773327B (en) | A kind of coal bed gas horizontal well Solid Free active salt aqueous drilling fluid | |
| CN109628075A (en) | A kind of low solids fluid and preparation method thereof for shaly sandstone reservoir | |
| CN104610939A (en) | Drilling fluid with low chloride ion concentration and preparation method thereof | |
| CN105154037B (en) | A kind of Solid Free composite synergistic high density well control fluids and preparation method thereof | |
| CN101638576B (en) | Shielding and temporary plugging gelling agent for drilling fluid and production method and use method thereof | |
| CN110225956A (en) | Oil based fluids composition for hydrocarbon exploitation application | |
| Lv et al. | Properties evaluation and application of organic amine inhibitor on the properties of drilling fluids | |
| CN102807846A (en) | Anti-collapse drilling fluid for coal bed methane horizontal well and method for preparing anti-collapse drilling fluid | |
| CN101100598A (en) | Low-density ebonite extreme pressure water-in-oil emulsion drilling fluid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20200729 |