CN107474808A - A kind of Oil/gas Well sleeve plugging resin sealing agent and preparation method and application - Google Patents
A kind of Oil/gas Well sleeve plugging resin sealing agent and preparation method and application Download PDFInfo
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- CN107474808A CN107474808A CN201710579016.6A CN201710579016A CN107474808A CN 107474808 A CN107474808 A CN 107474808A CN 201710579016 A CN201710579016 A CN 201710579016A CN 107474808 A CN107474808 A CN 107474808A
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- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 239000011347 resin Substances 0.000 title claims abstract description 52
- 229920005989 resin Polymers 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 81
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229960004279 formaldehyde Drugs 0.000 claims abstract description 39
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000004202 carbamide Substances 0.000 claims abstract description 33
- 239000007822 coupling agent Substances 0.000 claims abstract description 28
- 238000007711 solidification Methods 0.000 claims abstract description 27
- 230000008023 solidification Effects 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 235000019256 formaldehyde Nutrition 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000003750 conditioning effect Effects 0.000 claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 22
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 229910000077 silane Inorganic materials 0.000 claims description 14
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 13
- 238000004132 cross linking Methods 0.000 claims description 12
- 235000019270 ammonium chloride Nutrition 0.000 claims description 11
- 238000001723 curing Methods 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 238000013005 condensation curing Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 13
- 239000002981 blocking agent Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007812 deficiency Effects 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- -1 swollen dose of body Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 235000009827 Prunus armeniaca Nutrition 0.000 description 3
- 244000018633 Prunus armeniaca Species 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 230000004520 agglutination Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention belongs to oil gas field technical field of chemistry, discloses a kind of composition of Oil/gas Well sleeve plugging resin sealing agent, by percentage to the quality, the inventory accounting of each component is：Industrial urea 30%, industrial formol liquid 40%, solidification conditioning agent 0.1%~1%, coupling agent 0.1%~0.7%, swollen dose 1%~7% of body, water surplus.Polycondensation reaction occurs under the effect of 60~120 DEG C of formation temperature for the resin sealing agent, and generation is with three-dimensional space grid and with the high intensity solidfied material of closure site secure bond, 5~48 hours hardening times are adjustable, and blocking agent solidfied material is pressure-resistant 10~25MPa.Instant invention overcomes technological deficiency existing for existing leak-stopping technique, preferably solves Oil/gas Well sleeve plugging and repairs problem, suitable for Oil/gas Well sleeve plugging.
Description
Technical field
The invention belongs to oil gas field technical field of chemistry, and in particular to a kind of Oil/gas Well sleeve plugging resin sealing agent,
It is mainly used in Oil/gas Well sleeve plugging.
Background technology
In oil field development production process, as oil field production enters the middle and later periods, because long-term injecting water, steam injection are developed, frequency
The factors such as numerous Downhole Construction and sleeve pipe material and corrosion, cause Oil/gas Well casing deformation, rupture, bad break and
Perforation, so as to cause formation sand production, water outlet, leakage, has a strong impact on the normal production of Oil/gas Well, constrains part DP technology
Using, increase measure input difficulty, Exploitation Level of Oilfield is reduced, so in order to keep the stable high yield in oil field, it is necessary to right
Set damage part carries out water blockoff leak stopping.
At present, in order to solve the problems, such as that oil gas casing is run-down, mainly using the leak stopping of general inorganic binder materials and typically
The set technology such as overhaul pipeline and liner minor diameter sleeve pipe is changed in thermosetting resin blocking method, and part.Inorganic gel material
The technological deficiency of material leakage stopping technology and general thermosetting resin leakage stopping technology is mainly shown as：(1) blocking agent can not be effectively resident
In closure site, injection rate is big, engineering time length；(2) the firming body fragility that blocking agent is formed is big, easily shrinks, it is impossible to is situated between with surrounding
Matter forms firm interface and is glued, and closure is failed in the presence of note adopts pressure, shortens the construction term of validity；(3) blocking agent
Adaptability, security reliability are poor, and site operation risk is big.And big well workover takes set technology and needs overhaul shelf, there is also
Long construction period, construction cost is high, difficult to the operation of deep-well casing damaged well, and the reparation to the well of slight set leakage is very uneconomic to be lacked
Point.
The content of the invention
Prior art causes the leakage problem of many oil-water wells can not due to being limited by using effect and operating expenses
Effectively and timely solved, constrain production of hydrocarbons.In order to overcome technological deficiency existing for existing leak-stopping technique, with preferably
Solve Oil/gas Well sleeve plugging and repair problem, the invention provides a kind of Oil/gas Well sleeve plugging resin sealing agent.This tree
Fat sealing agent belongs to novel high-strength microdilatancy resin sealing agent, can be effectively resident in leak position, and can form interface agglutination
Intensity is high, the sealing layer of term of validity length, significantly improves closure success rate.
Oil/gas Well sleeve plugging resin sealing agent of the present invention, is the industrial urea containing various assistant agents and industrial first
The aqueous solution of aldehyde, i.e., using industrial urea, industrial formol liquid with solidifying conditioning agent, coupling agent, swollen dose of body, water according to a certain percentage
Mix.Specifically, the constituent of this resin sealing agent, by percentage to the quality, the inventory accounting of each component
For：
Oil/gas Well sleeve plugging resin sealing agent of the present invention, is the industrial urea containing various assistant agents and industrial first
The aqueous solution of aldehyde, ground viscosity (viscosity before solidification) is very low, after injecting stratum to be blocked or position, formation temperature (60~
120 DEG C) the lower generation polycondensation reaction of effect, generate with three-dimensional space grid and solidify with the high intensity of closure site secure bond
Thing.
As a preferred embodiment, the industrial formol liquid is the formalin that concentration is 36%.To this area
Technical staff for, the formalin of other concentration also can be selected in the industrial formol liquid.In technical solution of the present invention
Under enlightenment, same effect and goal of the invention also can reach.
As a preferred embodiment, the solidification conditioning agent selects ammonium nitrate and ammonium chloride.Solidify adding for conditioning agent
Enter, for improving the intensity of condensation curing thing.
As a preferred embodiment, the coupling agent selects silane coupling agent.To those skilled in the art
Speech, silane coupling agent can include it is a variety of, for example, KH-550 silane couplers, KH-551 silane couplers, KH-560 silane
Coupling agent, KH-570 silane couplers, B-201 silane couplers etc..Present invention employs the addition of silane coupling agent, improves
The cementing strength of solidfied material and closure site, is significantly increased consolidation thing intensity.
As a preferred embodiment, swollen dose of the body is 0.1~0.5mm pre-crosslinking swell particles from particle diameter.Body
Swollen dose of addition, the volume contraction that blocking agent should occur in the curing process is counteracted, and make its volumetric expansion, substantially improved
Sealing characteristics.
On the other hand, the present invention gives a kind of method for preparing the Oil/gas Well sleeve plugging resin sealing agent.
Specifically, it is with solidifying conditioning agent, coupling agent, swollen dose of body and water by setting ratio normal by industrial urea, industrial formol liquid
It is stirred under the conditions of temperature, you can obtain the resin sealing agent.
Using above-mentioned preparation method, the performance of gained resin sealing agent is presented as：Gained resin sealing agent is on stratum
The generation polycondensation reactions of 60~120 DEG C of temperature, 5~48h of curing reaction time, condensation curing thing is pressure-resistant 10~25MPa.
Furthermore the present invention gives the application of the resin sealing agent.Specifically, according to needed for calculating live hole condition
Resin sealing agent dosage, resin sealing agent is injected into stratum to be blocked, resin sealing agent solidifies at the formation temperature.
Oil/gas Well sleeve plugging resin sealing agent of the present invention, at least with following beneficial effect or advantage.
(1) resin sealing agent of the present invention is mainly containing various assistant agents (solidification conditioning agent, coupling agent, swollen dose of body)
The aqueous solution of industrial urea and industrial formol, ground viscosity is very low, and it is anti-that polycondensation occurs under (60~120 DEG C) effects of formation temperature
Should, generation with three-dimensional space grid and with the high intensity solidfied material of closure site secure bond.5~48 hours hardening times can
Adjust, blocking agent solidfied material is pressure-resistant 10~25MPa.
(2) resin sealing agent preparation method of the present invention is simple, and industrial urea, industrial formol liquid and solidification are adjusted
Agent, coupling agent, swollen dose of body and water are stirred by setting ratio under normal temperature condition, you can obtain the resin sealing agent.Pass through
The resin sealing agent prepared by the above method, the technical indicator of its product quality, is shown in Table 1.
Table 1, the technical indicator of resin sealing agent product of the present invention
(3) instant invention overcomes technological deficiency existing for existing leak-stopping technique, preferably solves Oil/gas Well sleeve plugging
Reparation problem.Resin sealing agent of the present invention belongs to novel high-strength microdilatancy resin sealing agent, and closure success rate is high, can be
Leak position is effectively resident, and can form interface cementing strength height, the sealing layer of term of validity length.
Embodiment
Below by example the present invention will be further described, it is necessary to explanation be following examples be only the present invention its
In example, do not represent the rights protection scope that is limited of the present invention, the scope of the present invention using claims as
It is accurate.
Embodiment 1
The present embodiment provides a kind of composition of preferable Oil/gas Well sleeve plugging resin sealing agent, with mass percent
Meter, the inventory accounting of each component are：Industrial urea 30%, industrial formol liquid 40%, solidification conditioning agent 0.1%, coupling agent
0.1%th, swollen dose 1% of body, clear water 28.8%.The solidification conditioning agent of the present embodiment selects ammonium nitrate；Coupling agent selects KH-550 silicon
Alkane coupling agent；Swollen dose of body selects pre-crosslinking swell particle.
Industrial urea 300kg is weighed, industrial formol liquid (aqueous solution of concentration 36%) 400kg, industrial urea is dissolved in work
In industry formalin, then weigh ammonium nitrate 0.1kg, KH-550 silane coupler 0.1kg, pre-crosslinking swell particle 1kg, clear water
28.8kg, by addition mixed solution in, be stirred, it is a kind of Oil/gas Well sleeve plugging tree to form uniform and stable liquid
Fat sealing agent.
Embodiment 2
The present embodiment provides a kind of composition of preferable Oil/gas Well sleeve plugging resin sealing agent, with mass percent
Meter, the inventory accounting of each component are：Industrial urea 30%, industrial formol liquid 40%, solidification conditioning agent 0.3%, coupling agent
0.3%th, swollen dose 3% of body, clear water 26.4%.The solidification conditioning agent of the present embodiment selects ammonium chloride；Coupling agent selects KH-560 silicon
Alkane coupling agent；Swollen dose of body selects pre-crosslinking swell particle.
Industrial urea 300kg is weighed, industrial formol liquid (aqueous solution of concentration 36%) 400kg, industrial urea is dissolved in work
In industry formalin, then weigh ammonium chloride 0.3kg, KH-551 silane coupler 0.3kg, pre-crosslinking swell particle 3kg, clear water
26.4kg, by addition mixed solution in, be stirred, it is a kind of Oil/gas Well sleeve plugging tree to form uniform and stable liquid
Fat sealing agent.
Embodiment 3
The present embodiment provides a kind of composition of preferable Oil/gas Well sleeve plugging resin sealing agent, with mass percent
Meter, the inventory accounting of each component are：Industrial urea 30%, industrial formol liquid 40%, solidification conditioning agent 0.5%, coupling agent
0.5%th, swollen dose 5% of body, clear water 24%.The solidification conditioning agent of the present embodiment selects ammonium chloride；Coupling agent is even from B-201 silane
Join agent；Swollen dose of body selects pre-crosslinking swell particle.
Industrial urea 300kg is weighed, industrial formol liquid (aqueous solution of concentration 36%) 400kg, industrial urea is dissolved in work
In industry formalin, then weigh ammonium chloride 0.5kg, KH-560 silane coupler 0.5kg, pre-crosslinking swell particle 5kg, clear water
24kg, by addition mixed solution in, be stirred, it is a kind of Oil/gas Well sleeve plugging resin to form uniform and stable liquid
Sealing agent.
Embodiment 4
The present embodiment provides a kind of composition of preferable Oil/gas Well sleeve plugging resin sealing agent, with mass percent
Meter, the inventory accounting of each component are：Industrial urea 30%, industrial formol liquid 40%, solidification conditioning agent 1%, coupling agent
0.7%th, swollen dose 7% of body, clear water 21.3%.The solidification conditioning agent of the present embodiment selects ammonium nitrate；Coupling agent selects KH-570 silicon
Alkane coupling agent；Swollen dose of body selects pre-crosslinking swell particle.
Industrial urea 300kg is weighed, industrial formol liquid (aqueous solution of concentration 36%) 400kg, industrial urea is dissolved in work
In industry formalin, then weigh ammonium nitrate 1kg, KH-570 silane coupler 0.7kg, pre-crosslinking swell particle 7kg, clear water
21.3kg, by addition mixed solution in, be stirred, it is a kind of Oil/gas Well sleeve plugging tree to form uniform and stable liquid
Fat sealing agent.
Embodiment 5
The present embodiment provides a kind of composition of preferable Oil/gas Well sleeve plugging resin sealing agent, with mass percent
Meter, the inventory accounting of each component are：Industrial urea 30%, industrial formol liquid 40%, solidification conditioning agent 0.2%, coupling agent
0.5%th, swollen dose 6% of body, clear water 23.3%.The solidification conditioning agent of the present embodiment selects ammonium nitrate；Coupling agent selects KH-551 silicon
Alkane coupling agent；Swollen dose of body selects pre-crosslinking swell particle.
Industrial urea 300kg is weighed, industrial formol liquid (aqueous solution of concentration 36%) 400kg, industrial urea is dissolved in work
In industry formalin, then weigh ammonium nitrate 0.2kg, KH-551 silane coupler 0.5kg, pre-crosslinking swell particle 6kg, clear water
23.3kg, by addition mixed solution in, be stirred, it is a kind of Oil/gas Well sleeve plugging tree to form uniform and stable liquid
Fat sealing agent.
Embodiment 6
Solidify influence of the conditioning agent dosage to urea/formalin hardening time, solidification intensity.In the present embodiment, supply
The solidification conditioning agent of examination is ammonium chloride, hydrochloric acid and ammonium nitrate.Concrete operations are：It is molten in industrial urea and the clear water of industrial formol liquid
Industrial goods ammonium chloride, hydrochloric acid and ammonium nitrate are separately added into liquid and determines curing performance at 90 DEG C.Test result is as shown in table 2.
Table 2, influence of the solidification conditioning agent dosage to urea/formalin hardening time, solidification intensity
From table 2 it can be seen that ammonium chloride, hydrochloric acid and ammonium nitrate can adjust urea and the curing reaction of formaldehyde in the solution
And improve the intensity of solidfied material, but the catalytic action of hydrochloric acid is too strong, and the catalytic action of ammonium chloride and ammonium nitrate is readily produced control,
And the dosage of ammonium chloride and ammonium nitrate more than 1.0% after intensity amplification very little, its Optimum be 0.1%~1.0%.
Embodiment 7
The influence of variety classes coupling agent and its dosage in urea/formalin hardening time, solidification intensity.Urea/
A small amount of silane coupling agent is added in formalin, the cementing strength between solidfied material and formation rock can be improved.Measure system
The hardening time and consolidation thing intensity that coupling agent addition is 0.3% at 90 DEG C, as a result as shown in table 3.
Table 3, influence of the coupling agent to urea/formalin hardening time, solidification intensity
From table 3 it can be seen that different silane coupling agent hardening time differences is larger.Determine the solidification of every kind of coupling agent
Time, suitable coupling agent can be selected preferably according to site operation demand, use range is more extensive.
Embodiment 8
Influence of the swollen dose of dosage of body to urea/formalin curing performance.Urea/formalin is normal in the curing process
Generation volume contraction, has a great influence to plugging strength and the closure term of validity, when solidification can be offset by adding swollen dose of body in the solution
The volume contraction of generation, or even make volumetric expansion, so as to substantially improve sealing characteristics, measure swollen dose of dosage of body is at 90 DEG C to urine
The influence of the curing performance of element/formalin, as a result as shown in table 4.
Table 4, influence (90 DEG C) of the swollen dose of dosage of body to urea/formalin curing performance
| Body swollen dose (%) | Solidfied material volume (cm3) | Volume Changes (%) | Hardening time (h) | Solidfied material intensity (MPa) |
| 0 | 18.0 | -10.0 | 48 | 13.6 |
| 1 | 20.5 | +2.5 | 45 | 15.6 |
| 3 | 21.5 | +7.5 | 46 | 16.4 |
| 5 | 21.0 | +5.0 | 46 | 16.4 |
| 7 | 20.8 | +4.0 | 46 | 16.0 |
From table 4, it can be seen that volume increases after the addition of swollen dose of body makes solution solidification, intensity has also increased, and the body is swollen
The Optimum of agent is 1%-7%, preferable amount 3%-5%.
Embodiment 9
With quartzy sandfilling diameter 19mm, long 50mm pressure pipe, artificial core is made, wherein 2 rock cores contain diameter
5mm circular crack (*The crack of the 5mm containing diameter).Rock core is cleaned, dried, surveys water phase permeability, squeezes into optimum formula urine
Element/formaldehyde blocking agent solution, after 90 DEG C are waited and coagulated 24 hours, then phase permeability is surveyed, the results are shown in Table 5.
Table 5, core plugging result
Above-mentioned experiment (embodiment 9) shows：Either Thief zone rock core or the rock core containing crack, the permeability after closure
It is reduced to 1 × 10-3um2, blocking agent of the present invention has very strong core plugging capability.
Embodiment 10
Field application (by taking the oil recovery factory of apricot river as an example).The factory's well of apricot river gas production two holds office company with prolonging by inventor
A bite experiment well of long petroleum cooperation, the well due to long-term injecting water, steam injection develop, frequently Downhole Construction and set tubing
The factors such as matter and corrosion, cause Oil/gas Well cased perforated serious.For the problem, at the scene using the Oil/gas Well of the present invention
Sleeve plugging is with resin sealing agent (embodiment 3).Upper end after the resin sealing agent that filling embodiment 3 is formulated, which is pressurized, is
287.65kN, it is consistent, illustrates after filling resin sealing agent, the perforation in oil gas casing is complete with the pressure of practical measurement
Complete blocks, and has reached the application effect of rationality, related data is shown in Table 6.
Table 6, application test data of the resin sealing agent shown in embodiment 3 in apricot river oil recovery factory experiment well
Further narration has been done to the present invention above in conjunction with embodiment, but the present invention is not limited to above-mentioned embodiment,
In one skilled in the relevant art's possessed knowledge, it can also be made on the premise of present inventive concept is not departed from
Various change.
Claims (9)
1. a kind of Oil/gas Well sleeve plugging resin sealing agent, by percentage to the quality, the inventory accounting of each component is：
2. Oil/gas Well sleeve plugging resin sealing agent according to claim 1, it is characterised in that the industrial formol liquid
The formalin for being 36% for concentration.
3. Oil/gas Well sleeve plugging resin sealing agent according to claim 1, it is characterised in that the solidification conditioning agent
From ammonium nitrate and ammonium chloride.
4. Oil/gas Well sleeve plugging resin sealing agent according to claim 1, it is characterised in that the coupling agent is selected
Silane coupling agent.
5. Oil/gas Well sleeve plugging resin sealing agent according to claim 1, it is characterised in that described swollen dose of selection of body
Particle diameter is 0.1~0.5mm pre-crosslinking swell particles.
6. Oil/gas Well sleeve plugging resin sealing agent according to claim 4, it is characterised in that the coupling agent is selected
KH-550 silane couplers, KH-551 silane couplers, KH-560 silane couplers, KH-570 silane couplers, B-201 silane
Coupling agent.
7. the preparation method of the Oil/gas Well sleeve plugging resin sealing agent any one of claim 1 to 6, it is by work
Industry urea, industrial formol liquid are stirred mixed with solidification conditioning agent, coupling agent, swollen dose of body and water by setting ratio under normal temperature condition
Close, you can obtain the resin sealing agent.
8. the preparation method of Oil/gas Well sleeve plugging resin sealing agent according to claim 7, gained resin sealing agent
In the generation polycondensation reactions of 60~120 DEG C of formation temperature, 5~48h of curing reaction time, condensation curing thing is pressure-resistant 10~25MPa.
9. the application of the Oil/gas Well sleeve plugging resin sealing agent any one of claim 1 to 6, according to live hole condition
The dosage of resin sealing agent needed for calculating, resin sealing agent is injected into stratum to be blocked, resin sealing agent is at the formation temperature
Solidification.
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| CN201710579016.6A CN107474808A (en) | 2017-07-17 | 2017-07-17 | A kind of Oil/gas Well sleeve plugging resin sealing agent and preparation method and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194045A (en) * | 2018-01-29 | 2018-06-22 | 韩雨桐 | A kind of casing repairing device |
| CN108204216A (en) * | 2018-01-29 | 2018-06-26 | 韩雨桐 | A kind of application method of casing repairing device |
| CN109370556A (en) * | 2018-09-25 | 2019-02-22 | 中国海洋石油集团有限公司 | Resinae sand control liquid and its preparation method suitable for gas well single hop plug injection of shaking out |
| CN109611046A (en) * | 2018-03-12 | 2019-04-12 | 刘屹凡 | A kind of petroleum pipeline tool prosthetic device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110017118A (en) * | 2018-01-08 | 2019-07-16 | 中国石油化工股份有限公司 | A kind of leak-proof leak-stopping system |
| CN108194045A (en) * | 2018-01-29 | 2018-06-22 | 韩雨桐 | A kind of casing repairing device |
| CN108204216A (en) * | 2018-01-29 | 2018-06-26 | 韩雨桐 | A kind of application method of casing repairing device |
| CN108204216B (en) * | 2018-01-29 | 2020-06-30 | 通化石油工具股份有限公司 | Application method of casing pipe repairing device |
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| CN109611046A (en) * | 2018-03-12 | 2019-04-12 | 刘屹凡 | A kind of petroleum pipeline tool prosthetic device |
| CN109611046B (en) * | 2018-03-12 | 2021-04-06 | 东营市科创石油装备有限公司 | Petroleum pipe tool repairing device |
| CN109370556A (en) * | 2018-09-25 | 2019-02-22 | 中国海洋石油集团有限公司 | Resinae sand control liquid and its preparation method suitable for gas well single hop plug injection of shaking out |
| CN112647895A (en) * | 2020-12-28 | 2021-04-13 | 黑龙江弘力通能源技术服务有限公司 | Method for plugging leakage of oil-gas well casing by adopting liquid casing |
| CN112727397A (en) * | 2021-01-05 | 2021-04-30 | 西南石油大学 | Method for repairing casing damage by using temperature response type sealing agent |
| CN112727397B (en) * | 2021-01-05 | 2022-05-27 | 西南石油大学 | Method for repairing casing damage by using temperature response type sealing agent |
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