CN109762544A - A kind of high temperature resistant diverting agent and its preparation method and application - Google Patents
A kind of high temperature resistant diverting agent and its preparation method and application Download PDFInfo
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- CN109762544A CN109762544A CN201910193658.1A CN201910193658A CN109762544A CN 109762544 A CN109762544 A CN 109762544A CN 201910193658 A CN201910193658 A CN 201910193658A CN 109762544 A CN109762544 A CN 109762544A
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- high temperature
- temperature resistant
- diverting agent
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- aromatic polyamide
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 69
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 229920006012 semi-aromatic polyamide Polymers 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims abstract description 4
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- 229920006119 nylon 10T Polymers 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 4
- -1 aliphatic diamine Chemical class 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920006139 poly(hexamethylene adipamide-co-hexamethylene terephthalamide) Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 150000001721 carbon Chemical group 0.000 claims 2
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000012545 processing Methods 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 208000016261 weight loss Diseases 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 239000004368 Modified starch Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000019890 Amylum Nutrition 0.000 description 1
- 239000001828 Gelatine Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229920013818 hydroxypropyl guar gum Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006128 poly(nonamethylene terephthalamide) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of high temperature resistant diverting agents and its preparation method and application.The present invention provides a kind of high temperature resistant diverting agent, the high temperature resistant diverting agent includes semi-aromatic polyamide quasi polymer and auxiliary agent.The present invention also provides the preparation method of above-mentioned high temperature resistant diverting agent, include the following steps: that extrusion obtains master batch after mixing raw material drying, is made the high temperature resistant diverting agent；The raw material includes semi-aromatic polyamide quasi polymer and auxiliary agent.The present invention also provides application of the above-mentioned high temperature resistant diverting agent in oil/gas drilling or underground heat exploitation.High temperature resistant diverting agent of the present invention has good tensile strength, temperature resistance ability and bearing capacity, can use under conditions of being higher than 200 DEG C, and at this temperature after a period of use, it can hydrolyze, and as fluid is discharged, residual is few, pollution-free to stratum.
Description
Technical field
The present invention relates to diverting agent technical fields.More particularly, to a kind of high temperature resistant diverting agent and preparation method thereof and
Using.
Background technique
Pressure break is an important technique measure of well production increment, water injection well stimulation, is not only widely used in low-permeability oil
Gas reservoir, and also have good effect in the storey increase design of medium to high permeable oil-gas reservoir.Its principle is to utilize ground high pressure pump group,
It, will when the pressure of generation is greater than crustal stress and formation rock tensile strength by a large amount of injection wells of liquid (usually water)
Crack is generated, frscturing is carried out.When needing to generate new crack, diverting agent is injected in primary fracture, carries out Crack Sealing
It is stifled, crack steering is carried out under the effect of the pressure, this is current most effective turnaround fracture mode.
The main material of diverting agent has water-soluble organic matter, such as biogum, natural plant gum, modified starch, inert solid (example
Such as silicon powder blocks bead), inorganic salts etc..Although the use of diverting agent produces significant effect of increasing production, to stratum
Damage problem all exist always, main reason is that can diverting agent return discharge with fluid after de-plugging.Usual de-plugging mode
Have three ways, such as that acid is molten, oil is molten and water-soluble.Wherein for sour molten diverting agent due to big to formation damage, current application is less；Oil is molten
The generally existing higher cost of diverting agent, constrains practical application；Water-soluble diverting agent is due to few to formation contaminant, and effect is good, easily
In the row of returning, attract attention extensively.
Patent CN106047323A discloses a kind of water-soluble diverting agent and preparation method thereof, the main component of the diverting agent
For gelatine, modified starch and hydroxypropyl guar gum, have the characteristics that bearing capacity is high, but can only make in≤100 DEG C of environment
With.Patent CN105482793A provides a kind of oil field small particle water solubility diverting agent, effectively solves non-equal in the layer of reservoir
Matter problem.Patent CN103409121A, which discloses water-soluble diverting agent, plant amylum, high polymer, swelling agent and curing agent group
At.Wherein high polymer is mainly modified polyacrylamide.Although the water-soluble diverting agent of above-mentioned technological development has good
Dissolubility, the features such as residual is few, but it is lower using temperature, only uses in the environment lower than 120 DEG C.With mining depth
The increasing of degree and exploitation geological complexity, formation temperature can be higher than 200 DEG C, therefore it is required that diverting agent has higher temperature resistance
Energy, shut-off capacity and bearing capacity.
Therefore, the present invention provides a kind of high temperature resistant diverting agent and its preparation method and application, to solve the above problems.
Summary of the invention
The first purpose of this invention is to provide a kind of high temperature resistant diverting agent；The high temperature resistant diverting agent has in high temperature
Use, the advantage of good bearing capacity and shut-off capacity can be stablized under (200 DEG C), while in a short time may be used after temporary stifled
Hydrolysis is crushed, and as flowing water is discharged, residual is few, reduces to stratum damage.
Second object of the present invention is to provide a kind of preparation method of high temperature resistant diverting agent.
Third object of the present invention is to provide a kind of application of high temperature resistant diverting agent.
In order to achieve the above objectives, the present invention adopts the following technical solutions:
A kind of high temperature resistant diverting agent, the high temperature resistant diverting agent include semi-aromatic polyamide quasi polymer and auxiliary agent；It should be partly
Aromatic polyamides quasi polymer has good heat resistance, and fusing point is generally greater than 290 DEG C, while can in the water of high temperature and pressure
It is gradually hydrolyzed to oligomer or small molecule compound, decomposition product does not agglomerate, and is easy to be discharged with water flow.
Preferably, the polyamide that structure polymerize based on the semi-aromatic polyamide quasi polymer for AB, wherein
A isX is 4,5,6,9,10,11 or 12；
B is
Preferably, the semi-aromatic polyamide quasi polymer also includes third comonomer；The third comonomer is
Carbon chain lengths be 4-14 carbon atom aliphatic dibasic acid or carbon chain lengths be 4-14 carbon atom aliphatic diamine.
Preferably, the semi-aromatic polyamide quasi polymer is nylon 6T, nylon 9 T, nylon 10T, nylon 12T, nylon
6T/66, nylon 6T/6 or nylon 10T/1012.
Preferably, number-average molecular weight >=10000 of the semi-aromatic polyamide quasi polymer；In the range of number-average molecular weight
Interior, the semi-aromatic polyamide quasi polymer has more stable mechanical performance and thermal stability.
Preferably, according to parts by weight, the high temperature resistant diverting agent includes:
50~100 parts of semi-aromatic polyamide quasi polymer；
0.1~2 part of auxiliary agent.
Preferably, the auxiliary agent is one of plasticizer, crosslinking agent, heat stabilizer, antioxidant, lubricant or a variety of；
Wherein, the plasticizer, crosslinking agent, heat stabilizer, antioxidant and lubricant are conventional reagent, and those skilled in the art can root
It is selected according to actual needs.
Preferably, the high temperature resistant diverting agent further includes filler.
Preferably, the filler is hollow glass micropearl, in glass fibre, carbon fiber, starch, cellulose, calcium carbonate
It is one or more.
Preferably, according to parts by weight, the high temperature resistant diverting agent includes:
50~100 parts of semi-aromatic polyamide quasi polymer；
0~50 part of filler；
0.1~2 part of auxiliary agent.
Preferably, fusing point >=290 DEG C of the high temperature resistant diverting agent.
Preferably, glass transition temperature >=100 DEG C of the high temperature resistant diverting agent.
Preferably, number-average molecular weight >=10000 of the high temperature resistant diverting agent.
The present invention also provides a kind of preparation methods of above-mentioned high temperature resistant diverting agent, include the following steps: raw material drying
It is squeezed out after mixing and obtains master batch, the high temperature resistant diverting agent is made；The raw material includes semi-aromatic polyamide quasi polymer and helps
Agent.
Preferably, the extrusion temperature is 20~40 DEG C higher than semi-aromatic polyamide quasi polymer fusing point.
Preferably, the raw material further includes filler.
The present invention also provides a kind of application of above-mentioned high temperature resistant diverting agent in oil/gas drilling or underground heat exploitation.
Preferably, application conditions of the high temperature resistant diverting agent in oil/gas drilling or underground heat exploitation are not less than for temperature
200℃。
In addition, unless otherwise specified, any range documented by the present invention includes any number between end value and end value
Any subrange that any number between value and end value or end value is constituted.
Beneficial effects of the present invention are as follows:
High temperature resistant diverting agent of the present invention has good heat resistance and mechanical performance, can be higher than 200 DEG C
Under the conditions of use, and at this temperature after a period of use, can hydrolyze, and as fluid is discharged, residual is few, to stratum
It is pollution-free；In addition, the high temperature resistant diverting agent has good processing performance, sheet material, plate, fiber, sphere etc. can be processed into no
The product of similar shape.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the schematic diagram of the high temperature resistant diverting agent in the embodiment of the present invention 1.
Fig. 2 shows high temperature resistant diverting agents in the embodiment of the present invention 1, and that 48 are placed under 200 DEG C of water, 1.5~1.6Mpa of pressure is small
When after shape appearance figure.
Fig. 3 shows high temperature resistant diverting agent in the embodiment of the present invention 1, and that 5 are placed under 300 DEG C of water, 8.4~8.8Mpa of pressure is small
When after shape appearance figure.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.It will be appreciated by those skilled in the art that specifically described content is illustrative and be not restrictive below, it should not be with this
It limits the scope of the invention.
Preparation method is then conventional method unless otherwise specified in the present invention；Raw material used is unless otherwise instructed
It is obtained from disclosed commercial sources.
Embodiment 1
A kind of high temperature resistant diverting agent, including the following raw material component:
Nylon 10T (i.e. PA10T) 500g；1098 2g of antioxidant；
Wherein the number-average molecular weight of PA10T is 10630g/mol.
Above-mentioned raw materials are squeezed out to processing at 335 DEG C, and are molded into the sample as shown in Figure 1 having a size of 4mm*8mm*10mm
This batten agent is placed in closed autoclave, water is added in kettle, is completely soaked sample by item, at 200 DEG C, pressure 1.5-
Processing 48 hours, sample quality and Figure losses are carried out under 1.6MPa, rectangle batten weight-loss ratio is 1.81%, and shape is damaged, knot
Fruit is as shown in Figure 2；Sample is broken for molecule completely (scale is micro- after 300 DEG C of water, 8.4~8.8Mpa of pressure lower 5 hours
Meter level is other), it can be completely with water flow movement, as a result as shown in Figure 3.
Embodiment 2
A kind of high temperature resistant diverting agent, including the following raw material component:
PA10T/1012 copolymer 500g；
Lubricant stearic acid 1g；
Wherein the number of PA10T/1012 copolymer (wherein the molar ratio of terephthalic acid (TPA) and dodecanedioic acid is 95:5) is equal
Molecular weight is 11530g/mol.
Above-mentioned raw materials are squeezed out to processing at 325 DEG C, and shot size is the batten of 4mm*8mm*10mm, by this batten agent
It is placed in closed autoclave, water is added in kettle, be completely soaked sample, under 200 DEG C, 1.5~1.6MPa of pressure
Reason 48 hours, the rupture of rectangle batten, mass loss rate are sample quality and Figure losses, and rectangle batten weight-loss ratio is 3.21%,
Shape is damaged；Sample is broken for molecule completely (scale is in micron after 300 DEG C of water, 8.4~8.8Mpa of pressure lower 5 hours
Rank), it can be completely with water flow movement.
Embodiment 3
A kind of high temperature resistant diverting agent, including the following raw material component:
Wherein, PA9T number-average molecular weight is 14500g/mol.
Above-mentioned raw materials component is squeezed out to processing at 330 DEG C, and is molded into the batten having a size of 4mm*8mm*10mm, by this
Batten agent is placed in closed autoclave, and water is added in kettle, is completely soaked sample, under 210 DEG C, 1.9~2.0MPa of pressure
Processing 48 hours is carried out, the rupture of rectangle batten, mass loss rate is sample quality and Figure losses, and rectangle batten weight-loss ratio is
5.7%, shape is damaged；Sample is broken for molecule (scale completely after 300 DEG C of water, 8.4~8.8Mpa of pressure lower 5 hours
It in the micron-scale not), can be completely with water flow movement.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of high temperature resistant diverting agent, which is characterized in that the high temperature resistant diverting agent include semi-aromatic polyamide quasi polymer and
Auxiliary agent.
2. high temperature resistant diverting agent according to claim 1, which is characterized in that based on the semi-aromatic polyamide quasi polymer
Body structure is the polyamide of AB polymerization, wherein
A isX is 4,5,6,9,10,11 or 12；
B is
3. high temperature resistant diverting agent according to claim 2, which is characterized in that the semi-aromatic polyamide quasi polymer is also wrapped
Comonomer containing third；The third comonomer is the aliphatic dibasic acid or carbon chain length that carbon chain lengths are 4-14 carbon atom
Degree is the aliphatic diamine of 4-14 carbon atom.
4. high temperature resistant diverting agent according to claim 3, which is characterized in that the semi-aromatic polyamide quasi polymer is Buddhist nun
Imperial 6T, nylon 9 T, nylon 10T, nylon 12T, nylon 6T/66, nylon 6T/6 or nylon 10T/1012.
5. high temperature resistant diverting agent according to claim 1, which is characterized in that the number of the semi-aromatic polyamide quasi polymer
Average molecular weight >=10000.
6. high temperature resistant diverting agent according to claim 1, which is characterized in that according to parts by weight, the high temperature resistant is temporarily blocked up
Agent includes:
50~100 parts of semi-aromatic polyamide quasi polymer；
0.1~2 part of auxiliary agent.
7. high temperature resistant diverting agent according to claims 1 to 6, which is characterized in that the high temperature resistant diverting agent further includes filling out
Fill object；The filler is one of hollow glass micropearl, glass fibre, carbon fiber, starch, cellulose, calcium carbonate or more
Kind mixture.
8. high temperature resistant diverting agent according to claim 1, which is characterized in that according to parts by weight, the high temperature resistant is temporarily blocked up
Agent includes:
50~100 parts of semi-aromatic polyamide quasi polymer；
0~50 part of filler；
0.1~2 part of auxiliary agent.
9. the preparation method of high temperature resistant diverting agent as described in any one of claims 1 to 8, which is characterized in that including walking as follows
It is rapid: to be squeezed out after raw material drying is mixed and obtain master batch, the high temperature resistant diverting agent is made；The raw material includes semi-aromatic polyamide
Quasi polymer and auxiliary agent.
10. application of the high temperature resistant diverting agent as described in any one of claims 1 to 8 in oil/gas drilling or underground heat exploitation.
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| CN111690391A (en) * | 2020-07-03 | 2020-09-22 | 北京金圣奥能源技术有限公司 | High-temperature-resistant tough degradable temporary plugging agent and preparation method thereof |
| CN112980410A (en) * | 2021-02-25 | 2021-06-18 | 成都泽赛普石油工程技术服务有限公司 | Temporary plugging agent for oil field and preparation method thereof |
| CN113136186A (en) * | 2021-04-07 | 2021-07-20 | 西安石油大油气科技有限公司 | Self-degradation temporary plugging agent capable of adjusting degradation aging for oil exploitation and preparation process thereof |
| CN115287049A (en) * | 2021-12-23 | 2022-11-04 | 新奥科技发展有限公司 | High-temperature compression-resistant temporary plugging material and preparation method thereof |
| CN115287053A (en) * | 2021-12-24 | 2022-11-04 | 新奥科技发展有限公司 | Degradable temporary plugging material and preparation method thereof |
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| CN115287049A (en) * | 2021-12-23 | 2022-11-04 | 新奥科技发展有限公司 | High-temperature compression-resistant temporary plugging material and preparation method thereof |
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