CN106833560A - A kind of organic salt for oil-gas mining and its preparation method and application - Google Patents
A kind of organic salt for oil-gas mining and its preparation method and application Download PDFInfo
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- CN106833560A CN106833560A CN201611236727.5A CN201611236727A CN106833560A CN 106833560 A CN106833560 A CN 106833560A CN 201611236727 A CN201611236727 A CN 201611236727A CN 106833560 A CN106833560 A CN 106833560A
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- oil
- organic salt
- gas mining
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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
- C09K8/06—Clay-free compositions
- C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
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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
Abstract
The present invention provides a kind of organic salt for oil-gas mining and its preparation method and application.The organic salt for being used for oil-gas mining includes 20 60 parts of sodium metasilicate, 3 15 parts of calcium hydroxide, 5 30 parts of potassium hydroxide, 5 30 parts of glucose, 3 25 parts of starch, 30 150 parts of carbon monoxide and 200 400 parts of water.There is inhibition to mud shale provided by the present invention for the organic salt of oil-gas mining, density can be configured to less than 1.63g/cm3Adjustable type drilling fluid, and with certain viscosity, funnel viscosity is less than 65s, be conducive to carrying drilling cuttings, well cleaning is kept, is developed simultaneously for slit formation or broken coal seam reservoirs, acted on good holding wellbore stability, infiltration loss ratio to coal seam reservoirs is less than 20%, and 15% is less than to conventional sandstone infiltration loss ratio；Inhibition of the drilling ＆ completion fluid to all kinds of reservoirs can be improved, the purpose of protection reservoir is reached, while environmentally friendly.
Description
Technical field
The invention belongs to oil-gas field development technical field, it is related to a kind of organic salt for oil-gas mining and preparation method thereof
And application.
Background technology
Coal petrography is a kind of porosity organic rock containing inorganic mineral, fracture development.Coal petrography is divided into low coal according to evolution degree
Rank, middle coal rank and high-rank coals, foreign scholar have been generally acknowledged that low coal rank and middle coal rank, due to hole and cranny development, are conducive to coal seam
Gas exploitation, high rank coal petrosal foramen gap and crack agensis, do not have coal-bed methane seepage passage, are unfavorable for cbm development.And China
Due to tectonic movement, high rank coal reservoir is by after tectonic movement, forming various cracks, thus China is in high rank coal storage
Layer forms industrial oil gas.
But by tectogenetic coal seam reservoirs, fracture development easily caves in drilling process, and coal petrography has again
Machine rock, with hydrophobicity, the blocking technology of conventional drilling liquid cannot be used on this stratum, easily cause coal to store up in drilling process
The failure of layer drilling engineering.
The content of the invention
In order to solve deficiency of the drilling fluid in drilling process in the prior art, used it is an object of the invention to provide one kind
Organic salt in oil-gas mining and its preparation method and application.The organic salt is constructed for coalbed methane reservoir drilling completion, can
The inhibition of drilling fluid or completion fluid to all kinds of reservoirs is improved, the purpose of protection reservoir is reached.
The purpose of the present invention is achieved by the following technical programs：
The present invention provides a kind of organic salt for oil-gas mining, and in parts by weight, this is used for the organic salt of oil-gas mining
Raw material components include：
In the above-mentioned organic salt for oil-gas mining, it is preferable that in parts by weight, this is used for the organic salt of oil-gas mining
Raw material components include：
In the above-mentioned organic salt for oil-gas mining, it is preferable that the starch can include tapioca, cornstarch and
One or more in potato starch etc. of combination, but not limited to this.
The present invention also provides the preparation method of the above-mentioned organic salt for oil-gas mining, and it is comprised the following steps：
Step one, sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, starch and water are added in reactor, stirring
Uniformly；
Step 2, to carbon monoxide is injected in reactor, is pressurized heating response, obtains the organic salt for oil-gas mining.
In above-mentioned preparation method, it is preferable that in step 2, the reaction pressure for being pressurized heating response is 25-30MPa.
In above-mentioned preparation method, it is preferable that in step 2, the reaction temperature for being pressurized heating response is 150-180 DEG C.
In above-mentioned preparation method, it is preferable that in step 2, the reaction time for being pressurized heating response is 10-12h.
In above-mentioned preparation method, it is preferable that in step 2, after supercharging heating response, the step also including cooling and pressure release
Suddenly.
The cooling can refer to be cooled to normal temperature, and pressure release can refer to pressure release to normal pressure.
The present invention also provides drilling fluid the answering in the reservoir drilling well of coal seam that the above-mentioned organic salt for oil-gas mining is prepared
With.The drilling fluid prepared can be the organic salt provided by the present invention for oil-gas mining by adding clear water or this area routine
Drilling fluid prepares what is obtained.
It is that can not only match somebody with somebody the characteristics of it is different from other organic salts provided by the present invention for the organic salt of oil-gas mining
Density is made less than 1.63g/cm3Different wash boring liquid, and certain viscosity can be formed, not only contribute to keep the borehole wall
Stabilization and well cleaning, and it is low to the coal seam reservoirs extent of damage.
Similarly, for conventional oil gas and oil reservoir, because organic salt is to the inhibition of mud shale, this density adjustable type drilling well
Liquid has certain viscosity again, is conducive to protection well to clean, and reservoir protection is conducive to as drilling fluid or completion fluid.
There is inhibition to mud shale provided by the present invention for the organic salt of oil-gas mining, density can be configured to and be less than
1.63g/cm3Adjustable type drilling fluid, and with certain viscosity, funnel viscosity is less than 65s, is conducive to carrying drilling cuttings, keeps
Well is cleaned, and is developed simultaneously for slit formation or broken coal seam reservoirs, is acted on good holding wellbore stability, to coal seam reservoirs
Infiltration loss ratio be less than 20%, to conventional sandstone infiltration loss ratio be less than 15%；Drilling ＆ completion fluid can be improved to each
The inhibition of class reservoir, reaches the purpose of protection reservoir, is both environmentally friendly.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and beneficial effect, now to skill of the invention
Art scheme carry out it is described further below, but it is not intended that to it is of the invention can practical range restriction.
It is used for the reactor used in the preparation method of the organic salt of oil-gas mining in following embodiments with stirring, to add
Heat, the stainless steel cauldron of high temperature high voltage resistant.
Embodiment 1
This implementation provides a kind of organic salt for oil-gas mining, and in parts by weight, this is used for the organic salt of oil-gas mining
Raw material components include：
The present embodiment also provides the preparation method of the above-mentioned organic salt for oil-gas mining, and it is comprised the following steps：
Step one, according to the addition of above-mentioned raw materials component by sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, cassava
Starch and water are added in high-temperature high-pressure reaction kettle, are stirred；
Step 2, according to the addition of above-mentioned raw materials component to carbon monoxide is injected in high-temperature high-pressure reaction kettle, is pressurized to
Reacting kettle inner pressure is increased to 28MPa, heating stirring reaction 12h at 180 DEG C, and slow cooling, pressure release are somebody's turn to do to normal temperature and pressure
For the organic salt of oil-gas mining.
Embodiment 2
The present embodiment provides a kind of organic salt for oil-gas mining, and in parts by weight, this is used for the organic of oil-gas mining
The raw material components of salt include：
The present embodiment also provides the preparation method of the above-mentioned organic salt for oil-gas mining, and it is comprised the following steps：
Step one, according to the addition of above-mentioned raw materials component by sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, cassava
Starch and water are added in high-temperature high-pressure reaction kettle, are stirred；
Step 2, according to the addition of above-mentioned raw materials component to carbon monoxide is injected in high-temperature high-pressure reaction kettle, is pressurized to
Reacting kettle inner pressure is increased to 28MPa, heating stirring reaction 12h at 180 DEG C, and slow cooling, pressure release are somebody's turn to do to normal temperature and pressure
For the organic salt of oil-gas mining.
Embodiment 3
The present embodiment provides a kind of organic salt for oil-gas mining, and in parts by weight, this is used for the organic of oil-gas mining
The raw material components of salt include：
The present embodiment also provides the preparation method of the above-mentioned organic salt for oil-gas mining, and it is comprised the following steps：
Step one, according to the addition of above-mentioned raw materials component by sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, corn
Starch and water are added in high-temperature high-pressure reaction kettle, are stirred；
Step 2, according to the addition of above-mentioned raw materials component to carbon monoxide is injected in high-temperature high-pressure reaction kettle, is pressurized to
Reacting kettle inner pressure is increased to 28MPa, heating stirring reaction 12h at 180 DEG C, and slow cooling, pressure release are somebody's turn to do to normal temperature and pressure
For the organic salt of oil-gas mining.
Embodiment 4
The present embodiment provides a kind of organic salt for oil-gas mining, and in parts by weight, this is used for the organic of oil-gas mining
The raw material components of salt include：
The present embodiment also provides the preparation method of the above-mentioned organic salt for oil-gas mining, and it is comprised the following steps：
Step one, according to the addition of above-mentioned raw materials component by sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, potato
Starch and water are added in high-temperature high-pressure reaction kettle, are stirred；
Step 2, according to the addition of above-mentioned raw materials component to carbon monoxide is injected in high-temperature high-pressure reaction kettle, is pressurized to
Reacting kettle inner pressure is increased to 28MPa, heating stirring reaction 12h at 180 DEG C, and slow cooling, pressure release are somebody's turn to do to normal temperature and pressure
For the organic salt of oil-gas mining.
Embodiment 5
The present embodiment provides a kind of organic salt for oil-gas mining, and in parts by weight, this is used for the organic of oil-gas mining
The raw material components of salt include：
The present embodiment also provides the preparation method of the above-mentioned organic salt for oil-gas mining, and it is comprised the following steps：
Step one, according to the addition of above-mentioned raw materials component by sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, potato
Starch and water are added in high-temperature high-pressure reaction kettle, are stirred；
Step 2, according to the addition of above-mentioned raw materials component to carbon monoxide is injected in high-temperature high-pressure reaction kettle, is pressurized to
Reacting kettle inner pressure is increased to 28MPa, heating stirring reaction 12h at 180 DEG C, and slow cooling, pressure release are somebody's turn to do to normal temperature and pressure
For the organic salt of oil-gas mining.
Embodiment 6
The present embodiment provides the organic salt for oil-gas mining that is prepared using above-described embodiment 1-5 to prepare saturation
Its density of solution testing and viscosity, while being configured to the drilling fluid with certain density in the reservoir drilling well of somewhere coal seam
Experiment test.
After the organic salt for oil-gas mining that embodiment 1-5 is prepared is configured to saturated solution, test its density and
Funnel viscosity, test result is as shown in table 1.
Table 1
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| 1.63 | 1.64 | 1.63 | 1.64 | 1.63 | |
| Funnel viscosity (s) | 65 | 65 | 65 | 65 | 65 |
As shown in Table 1, the saturated solution that 5 embodiments are prepared, density is in 1.63g/cm3And 1.64g/cm3Between, funnel
Viscosity is 65s.
There is the reservoir drilling well of phenomenon of caving in selection somewhere coal seam reservoirs drilling process, prepared using embodiment 1-5
For the organic salt of oil-gas mining, clear water is added to be configured to density for 1.32g/cm respectively3Drilling fluid.The drilling fluid is carried out
Coal heart permeability loss ratio is tested, while being also carried out the permeability loss ratio test of Sandstone Cores, the test result such as institute of table 2
Show.
Table 2
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| 1.32 | 1.32 | 1.32 | 1.32 | 1.32 | |
| Funnel viscosity (s) | 45 | 48 | 50 | 45 | 49 |
| Coal heart permeability loss ratio (%) | 13 | 18 | 20 | 17 | 14 |
| Rock core permeability loss ratio (%) | 9 | 11 | 12 | 10 | 11 |
As shown in Table 2, embodiment 1 is most preferred embodiment.But the drilling fluid that the above-mentioned organic salt for oil-gas mining is prepared
Certain viscosity is respectively provided with, permeability loss ratio is low, the development of fracture type or broken coal seam reservoirs have the good holding borehole wall steady
It is set for using.
In sum, the organic salt provided by the present invention for oil-gas mining has inhibition to mud shale, can prepare
1.63g/cm is less than into density3Adjustable type drilling fluid, and with certain viscosity, drilling fluid of the funnel viscosity less than 65s, this
The density adjustable type drilling fluid with certain viscosity is planted, is conducive to carrying drilling cuttings, keep well cleaning, sent out simultaneously for slit formation
The coal seam reservoirs educated or crush, act on good holding wellbore stability, and the infiltration loss ratio to coal seam reservoirs is less than 20%, to normal
Rule sandstone infiltration loss ratio is less than 15%；Mud shale inhibition of the drilling ＆ completion fluid to all kinds of reservoirs can be improved, is reached
The purpose of reservoir is protected, is both environmentally friendly.
Claims (9)
1. a kind of organic salt for oil-gas mining, in parts by weight, this is used for the raw material components bag of the organic salt of oil-gas mining
Include：
2. the organic salt for oil-gas mining according to claim 1, it is characterised in that in parts by weight, this is used for oil
The raw material components of the organic salt of gas exploitation include：
3. the organic salt for oil-gas mining according to claim 1 and 2, it is characterised in that：The starch includes cassava
One or more in starch, cornstarch and potato starch of combination.
4. the preparation method of the organic salt for oil-gas mining described in any one of claim 1-3, it is comprised the following steps：
Step one, sodium metasilicate, calcium hydroxide, potassium hydroxide, glucose, starch and water are added in reactor, are stirred；
Step 2, to carbon monoxide is injected in reactor, is pressurized heating response, obtains the organic salt for oil-gas mining.
5. preparation method according to claim 4, it is characterised in that：In step 2, the reaction pressure of heating response is pressurized
Power is 25-30MPa.
6. preparation method according to claim 4, it is characterised in that：In step 2, the reaction temperature of heating response is pressurized
Spend is 150-180 DEG C.
7. preparation method according to claim 4, it is characterised in that：In step 2, when being pressurized the reaction of heating response
Between be 10-12h.
8. preparation method according to claim 4, it is characterised in that：In step 2, after supercharging heating response, also include
The step of cooling and pressure release.
9. the drilling fluid that the organic salt for oil-gas mining described in any one of claim 1-3 is prepared is in the reservoir drilling well of coal seam
Application.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236727.5A CN106833560A (en) | 2016-12-28 | 2016-12-28 | A kind of organic salt for oil-gas mining and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236727.5A CN106833560A (en) | 2016-12-28 | 2016-12-28 | A kind of organic salt for oil-gas mining and its preparation method and application |
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| Publication Number | Publication Date |
|---|---|
| CN106833560A true CN106833560A (en) | 2017-06-13 |
Family
ID=59112645
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273962A (en) * | 2000-03-31 | 2000-11-22 | 杨显云 | Process for synthesizing potassium formate |
| CN1417188A (en) * | 2001-11-09 | 2003-05-14 | 巴斯福股份公司 | Preparation process of metal formate/formic acid mixture |
| CN1930265A (en) * | 2004-03-09 | 2007-03-14 | 帝国化学工业公司 | Improved drilling fluids |
| CN101143812A (en) * | 2007-09-25 | 2008-03-19 | 张文慧 | Technique for producing formate |
| CN103923622A (en) * | 2014-04-17 | 2014-07-16 | 中国石油大学(华东) | Multielement compound saltwater drilling fluid |
-
2016
- 2016-12-28 CN CN201611236727.5A patent/CN106833560A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273962A (en) * | 2000-03-31 | 2000-11-22 | 杨显云 | Process for synthesizing potassium formate |
| CN1417188A (en) * | 2001-11-09 | 2003-05-14 | 巴斯福股份公司 | Preparation process of metal formate/formic acid mixture |
| CN1930265A (en) * | 2004-03-09 | 2007-03-14 | 帝国化学工业公司 | Improved drilling fluids |
| CN101143812A (en) * | 2007-09-25 | 2008-03-19 | 张文慧 | Technique for producing formate |
| CN103923622A (en) * | 2014-04-17 | 2014-07-16 | 中国石油大学(华东) | Multielement compound saltwater drilling fluid |
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Application publication date: 20170613 |