CN108865104A - A kind of slippery water - Google Patents
A kind of slippery water Download PDFInfo
- Publication number
- CN108865104A CN108865104A CN201810885114.7A CN201810885114A CN108865104A CN 108865104 A CN108865104 A CN 108865104A CN 201810885114 A CN201810885114 A CN 201810885114A CN 108865104 A CN108865104 A CN 108865104A
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- Prior art keywords
- slippery water
- ammonium
- water according
- variety
- nitrite
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The present invention provides a kind of slippery water, in terms of mass percentage, including following components：Friction reducer 0.02~0.09%；Cleanup additive 0.10~0.20%；Clay stabilizer 0.15~0.35%；Energizer 5~35%；Energization adjuvant 5~30%；Catalyst 0.5~0.8% and excess water；The energizer is nitrite；The energization adjuvant is ammonium salt.Smooth aqueous systems operating temperature is improved 55~103 DEG C by slippery water provided by the invention, and operating pressure increases 0.78~1.35Mpa, can effectively improve fracturing fracture network density and crevice volume.
Description
Technical field
The present invention relates to shale gas exploitation technical field more particularly to a kind of slippery water.
Background technique
Shale gas refers to that preservation is to continuously generate in the Unconventional gas preserved in series of rocks based on rich organic shale
Biochemical genesis air and heat origin cause of formation gas or both mixing, can be present in intrinsic fracture and hole with free state.According to pre-
Survey, China's shale gas can production of resources up to 36 × 1012m3, potentiality to be exploited is huge, is that the ideal of conventional oil natural gas takes over energy
Source.Nowadays, domestic shale gas exploitation is in starting and developing stage, Shale Gas Accumulation rule, reservoir space, percolation law with
And development mode has its own feature, especially reservoir with special low hole, special hypotonic and there are adsorption-desorptions, gives effective exploitation band
Very big difficulty and challenge are come.
By the continuous practice of many years, volume fracturing has become master as the major way of shale gas reservoir stimulation operation
Flow Technique carries out pressure break usually using slippery water, and form of construction work mainly injects slippery water by huge discharge and (carries low sand than branch
Support agent), so that the intrinsic fracture in stratum is generated shearing slip, more secondary fractures is generated in the side in crack, to be formed
Longer complex fracture network can increase considerably the seam reticular density of shale in complicated dendroid, reduce gas in pore wall
Absorption, realize the soaring of gas production.But using existing slippery water carry out pressure break, however it remains effectively seam reticular density it is not high,
The problems such as adsorbed gas recovery ratio is low.
Summary of the invention
The purpose of the present invention is to provide a kind of slippery water, can open the more cracks in stratum, improve shale pressure break and split
Network density and crevice volume are stitched, and then improves the recovery ratio of adsorbed gas.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
The present invention provides a kind of slippery water, in terms of mass percentage, including following components：
The energizer is nitrite；
The energization adjuvant is ammonium salt.
Preferably, the energizer includes one of sodium nitrite, potassium nitrite and magnesium nitrite or a variety of.
Preferably, the energization adjuvant includes one of ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium formate and ammonium citrate
Or it is a variety of.
Preferably, the friction reducer is modified polyacrylamide.
Preferably, the cleanup additive includes dodecyl trimethyl ammonium chloride, dodecyl trimethyl ammonium bromide, fluorine carbon table
In face activating agent, neopelex, fatty alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether and polyethet surfactant
It is one or more.
Preferably, the clay stabilizer includes one in potassium chloride, tetramethyl ammonium chloride and small cation quasi polymer
Kind is a variety of.
Preferably, the small cation quasi polymer is epoxychloropropane organic amine condensation product and/or poly dimethyl and alkene
Propyl ammonium chloride.
Preferably, the catalyst includes sustained-release acid.
Preferably, the sustained-release acid includes one of citric acid, trichloroacetic acid, ethylenediamine tetra-acetic acid and oxalic acid or more
Kind.
The present invention provides a kind of slippery water, in terms of mass percentage, including following components：Friction reducer 0.02~
0.09%；Cleanup additive 0.10~0.20%；Clay stabilizer 0.15~0.35%；Energizer 5~35%；Energization adjuvant 5~
30%；Catalyst 0.5~0.8% and excess water；The energizer is nitrite；The energization adjuvant is ammonium salt.The present invention
Energizer and energization adjuvant are added in smooth aqueous systems, energizer and energization adjuvant are rapid under the high temperature and high pressure environment on stratum
It chemically reacts, a large amount of gas can be generated, while releasing amount of heat, stratum temperature can be improved in a large amount of heat of reaction
Degree, heated well bottom liquid and surrounding formation, the bulk gas of generation can increase strata pressure, open the more cracks in stratum, mention
High shale fracturing fracture network density and crevice volume.Embodiment the result shows that, slippery water provided by the invention is by smooth water body
It is that operating temperature improves 55~103 DEG C, operating pressure increases 0.78~1.35Mpa, illustrates slippery water provided by the invention
Fracturing fracture network density and crevice volume can be effectively improved.
Specific embodiment
The present invention provides the present invention provides a kind of slippery water, in terms of mass percentage, including following components：
The energizer is nitrite；
The energization adjuvant is ammonium salt.
In terms of mass percentage, slippery water provided by the invention includes 5~35% energizer, preferably 7~30%,
More preferably 10%~27%.In the present invention, the energizer is nitrite, preferably includes sodium nitrite, potassium nitrite
With one of magnesium nitrite or a variety of.The present invention does not have particular/special requirement to the source of the nitrite, using this field skill
The nitrite in the known source of art personnel, it is specific such as commercially available nitrite.When the energizer is the mixed of many kinds of substance
When closing object, the present invention does not have particular/special requirement to the dosage relation different material in mixture, using arbitrary proportion.
In terms of mass percentage, slippery water provided by the invention includes 5~30% energization adjuvant, preferably 7~
28%, more preferably 10%~25%.In the present invention, the energization adjuvant be ammonium salt, preferably include ammonium chloride, ammonium sulfate,
One of ammonium nitrate, ammonium formate and ammonium citrate are a variety of.The present invention does not have particular/special requirement to the source of the ammonium salt, uses
The ammonium salt in the known source of those skilled in the art.Energization adjuvant of the present invention being capable of height with aforementioned energizer on stratum
It is chemically reacted rapidly under warm hyperbaric environment, a large amount of gas can be generated, while releasing amount of heat, a large amount of reaction heat
Formation temperature, heated well bottom liquid and surrounding formation can be improved in amount, and the bulk gas of generation can increase strata pressure, opens stratum
Shale fracturing fracture network density and crevice volume are improved in more cracks.
In terms of mass percentage, slippery water provided by the invention includes 0.02~0.09% friction reducer, preferably
0.03~0.08%, more preferably 0.04~0.07%.In the present invention, the friction reducer is preferably modified polyacrylamide,
The modified polyacrylamide is preferably the cation-modified polyacrylamide of emulsion-type, the cation-modified polyacrylamide of powder-type
One of the anion-modified polyacrylamide of amine, emulsion-type and the anion-modified polyacrylamide of powder-type, it is most preferably newborn
The cation-modified polyacrylamide of liquid type.In the present invention, the average molecular of the cation-modified polyacrylamide of the emulsion-type
Amount preferably 6,000,000~12,000,000, further preferably 7,000,000~12,000,000；The cation-modified polyacrylamide of emulsion-type
The ion degree of amine is preferably 10~30%, and further preferably 15~30%.The present invention carrys out the modified polyacrylamide
Source does not have particular/special requirement, using commercial goods well known to those skilled in the art.Friction reducer of the present invention can be significant
Flowing frictional resistance of slippery water during pumping note.
In terms of mass percentage, slippery water provided by the invention includes 0.10~0.20% cleanup additive, preferably
0.10~0.19%, more preferably 0.12~0.18%.In the present invention, the cleanup additive preferably includes trimethyl
Ammonium chloride, dodecyl trimethyl ammonium bromide, fluorocarbon surfactant, neopelex, fatty alcohol polyoxyethylene ether,
One of nonylphenol polyoxyethylene ether and polyethet surfactant are a variety of.The present invention is to the source of the cleanup additive without spy
It is different to require, using the cleanup additive in source known to those skilled in the art.Cleanup additive of the present invention can make slippery water exist
It is quickly counter after construction to drain into ground, reduce formation damage.
In terms of mass percentage, slippery water provided by the invention includes 0.15~0.35% clay stabilizer, preferably
It is 0.17~0.33%, more preferably 0.2~0.3%.In the present invention, the clay stabilizer preferably includes potassium chloride, chlorine
Change one of tetramethyl-ammonium and small cation quasi polymer or a variety of.The small cation quasi polymer is preferably epoxy chloropropionate
Alkane organic amine condensation product and/or poly dimethyl and allyl ammonium chloride.The present invention is to the source of the clay stabilizer without spy
It is different to require, it is specific such as commercial goods using the clay stabilizer in source known to those skilled in the art.
In terms of mass percentage, slippery water provided by the invention includes 0.5~0.8% catalyst, preferably 0.55
~0.8%, more preferably 0.6~0.8%.In the present invention, the catalyst is preferably sustained-release acid, and the sustained-release acid preferably wraps
Include one of citric acid, trichloroacetic acid, ethylenediamine tetra-acetic acid and oxalic acid or a variety of.The present invention does not have the source of the sustained-release acid
There is particular/special requirement, using the sustained-release acid in source known to those skilled in the art.Catalyst of the present invention can promote to increase
Chemical reaction between energy agent and energization adjuvant.
In terms of mass percentage, slippery water provided by the invention further includes the water of surplus.In the present invention, the water is excellent
It is selected as deionized water.The present invention does not have particular/special requirement to the source of the water, using the water in source known to those skilled in the art
?.
The preparation method of present invention slippery water described in above-mentioned technical proposal does not have particular/special requirement, directly mixes each component
Uniformly.The present invention does not have particular/special requirement to the mixed mode, using any side that can be uniformly mixed each component
Formula.
Slippery water provided by the invention is described in detail below with reference to embodiment, but they cannot be interpreted as
Limiting the scope of the present invention.
Embodiment 1
Slippery water is prepared according to the proportion of 1 each component of table.
According to SY/T 5107-2005 aqueous fracturing fluid method of evaluating performance, National Development and Reform Commission's publication；SY/
The surface T 5370-1999 and interfacial tension measuring method, State Administration of Petroleum and Chemical Industry's publication and SY/T 5762-1995
Fracture acidizing clay stabilizer performance measurement method, China National Petroleum Corporation's publication；To the slippery water of embodiment 1 into
The test of row common index, test result are shown in Table 1.
Energization index test is carried out to the slippery water of embodiment 1 in accordance with the following methods, test method is as follows：
The slippery water 300mL prepared is taken, the 500mL small pressure kettle (model for having temperature and pressure sensor is packed into
SYBFD05-1.2, the production of Yantai Pine Ridge Chemical Equipment Co., Ltd.), it then seals, observes conduction oil position in collet and be in just
Chang Kedu, if deficiency adds conduction oil；
85 DEG C of autoclave temp of setting, starter is heated, the maximum that record experimentation temperature and pressure reaches
Value；
When temperature, pressure is reduced by maximum value, end experiment, test result is shown in Table 1.
The slippery water composition and performance test result of 1 embodiment 1 of table
Embodiment 2
Slippery water is prepared according to the proportion of 2 each component of table.
It is tested using the indices of test method same as Example 1 to the slippery water of embodiment 2, test knot
Fruit is shown in Table 2.
The slippery water composition and performance test result of 2 embodiment 2 of table
Embodiment 3
Slippery water is prepared according to the proportion of 3 each component of table.
It is tested using the indices of test method same as Example 1 to the slippery water of embodiment 3, test knot
Fruit is shown in Table 3.
The slippery water composition and performance test result of 3 embodiment 3 of table
As seen from the above embodiment, the present invention provides a kind of slippery water, in terms of mass percentage, including with the following group
Point：Friction reducer 0.02~0.09%；Cleanup additive 0.10~0.20%；Clay stabilizer 0.15~0.35%；Energizer 5~
35%；Energization adjuvant 5~30%；Catalyst 0.5~0.8% and excess water；The energizer is nitrite；The energization is auxiliary
Agent is ammonium salt.Embodiment the result shows that, slippery water indices provided by the invention meet national standard, and the present invention mentions
Smooth aqueous systems operating temperature is improved 55~103 DEG C by the slippery water of confession, and operating pressure increases 0.78~1.35Mpa, says
Bright slippery water provided by the invention can effectively improve fracturing fracture network density and crevice volume.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of slippery water, in terms of mass percentage, including following components：
The energizer is nitrite；
The energization adjuvant is ammonium salt.
2. slippery water according to claim 1, which is characterized in that the energizer include sodium nitrite, potassium nitrite and
One of magnesium nitrite is a variety of.
3. slippery water according to claim 1 or 2, which is characterized in that the energization adjuvant include ammonium chloride, ammonium sulfate,
One of ammonium nitrate, ammonium formate and ammonium citrate are a variety of.
4. slippery water according to claim 1, which is characterized in that the friction reducer is modified polyacrylamide.
5. slippery water according to claim 1, which is characterized in that the cleanup additive includes trimethyl chlorination
Ammonium, dodecyl trimethyl ammonium bromide, fluorocarbon surfactant, neopelex, fatty alcohol polyoxyethylene ether, nonyl
One of phenol polyethenoxy ether and polyethet surfactant are a variety of.
6. slippery water according to claim 1, which is characterized in that the clay stabilizer includes potassium chloride, chlorination tetramethyl
One of base ammonium and small cation quasi polymer are a variety of.
7. slippery water according to claim 6, which is characterized in that the small cation quasi polymer has for epoxychloropropane
Machine amine condensation product and/or poly dimethyl and allyl ammonium chloride.
8. slippery water according to claim 1, which is characterized in that the catalyst includes sustained-release acid.
9. slippery water according to claim 8, which is characterized in that the sustained-release acid includes citric acid, trichloroacetic acid, second two
One of amine tetraacethyl and oxalic acid are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810885114.7A CN108865104A (en) | 2018-08-06 | 2018-08-06 | A kind of slippery water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810885114.7A CN108865104A (en) | 2018-08-06 | 2018-08-06 | A kind of slippery water |
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| Publication Number | Publication Date |
|---|---|
| CN108865104A true CN108865104A (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810885114.7A Pending CN108865104A (en) | 2018-08-06 | 2018-08-06 | A kind of slippery water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088265A (en) * | 2019-12-23 | 2021-07-09 | 中石化南京化工研究院有限公司 | High-temperature-resistant efficient clay stabilizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088265A (en) * | 2019-12-23 | 2021-07-09 | 中石化南京化工研究院有限公司 | High-temperature-resistant efficient clay stabilizer |
| CN113088265B (en) * | 2019-12-23 | 2023-04-25 | 中石化南京化工研究院有限公司 | High-temperature-resistant efficient clay stabilizer |
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