CN203319922U - Water-control low-temperature cured resin coated sand control particle - Google Patents
Water-control low-temperature cured resin coated sand control particle Download PDFInfo
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- CN203319922U CN203319922U CN2013202490947U CN201320249094U CN203319922U CN 203319922 U CN203319922 U CN 203319922U CN 2013202490947 U CN2013202490947 U CN 2013202490947U CN 201320249094 U CN201320249094 U CN 201320249094U CN 203319922 U CN203319922 U CN 203319922U
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Abstract
The utility model provides a accuse water type low temperature cured resin tectorial membrane sand control granule. The water-control low-temperature curing resin coated sand control particle comprises a propping agent, and an inner resin film and an outer resin film which are coated outside the propping agent, wherein the particle size of the propping agent is 0.45-0.8 mm or 0.8-1.2 mm, the thickness of the inner resin film is 4-5 mu m, and the thickness of the outer resin film is 4-5 mu m. The utility model discloses a accuse water type low temperature cured resin tectorial membrane sand control granule is but low temperature solidification to have the sand control granule of oleophylic hydrophobicity, it can improve high moisture sand production block fracturing sand control measure effect, reduces the stratum sand production, stabilizes the oil well output.
Description
Technical field
The utility model relates to a kind of control water type low temperature curing resin precoated sand sand control particle, belongs to the chemical sand control technical field in field of petroleum exploitation.
Background technology
The Liaohe Oil Field formation sand production is very serious, such as 7, hollow 38, Haiwaihe oil, 212 ,Shu of Du, tri-district ,Shu 4th district, neat 40, neat 108, high 246, Green Dragon platform and brocade etc., has nearly 30 blocks to have the problem of shaking out.The sand output well kind is many, and the heavy oil wells of existing thin oil well, conventional exploitation also has steam stimulation heavy oil wells and gasser.From the time of shaking out, just there is the phenomenon of shaking out at some block initial stage of going into operation; Some block, after producing for some time, finds that indivedual wells shake out, and then sand output well is more and more, is expansion trend, as clear as low-lying area 5, hollow 16 etc.
Sand production can cause the production unit abrasion, damage, and reduces oil well output, improves the problems such as production cost; Also can cause formation collapse when serious, cap rock sink and the problems such as casing deformation, wrong section, and oil well is scrapped.
At present, for solving a sand production difficult problem, multiple sand control means have been developed.Wherein, the sand control means of mechanical aspects comprise various screen sand controls etc.; The sand control means of chemistry aspect are mainly main with fracturing sand control (that is, earth formation deep sand control), artificial borehole wall sand prevention, chemical consolidated sand etc.And, along with deepening continuously of water flooding carried out, some blocks have entered exploitation " two high " phase of " oil reservoir surplus oil high dispersing, the main body section water flooding degree is high ", be subject to this to affect the sand control measure deleterious.Its main manifestations is that after sand control measure is implemented, oil well increases liquid and do not increase the situations such as oil, crude oil water containing is high, the measure validity period is short; Some oil field oil reservoir buries shallow, and formation temperature is low, and ordinary resin sand sand control particle can not cementation solidifying under cold condition, and the sand control that can not set up some strength filters barrier, can't reach the sand control measure effect.
Therefore, for improving oil and water well sand control measure effect, improve the sand-preventing process level, improve oil well output, reduce crude oil water content, develop a kind of control water type low temperature curing resin precoated sand sand control particle, be still one of this area problem demanding prompt solution.
The utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of control water type low temperature curing resin precoated sand sand control particle.This control water type low temperature curing resin precoated sand sand control particle is low-temperature curable, and the coated sand sand control particle of tool oleophyllie hydrophobic, and it can improve the high moisture block fracturing sand control measure effect that shakes out, and reduces formation sand production, stablizes oil well output.
For reaching above-mentioned purpose, the utility model provides a kind of control water type low temperature curing resin precoated sand sand control particle, it is characterized in that, this control water type low temperature curing resin precoated sand sand control particle comprises inner layer resin film and the outermost resin film of propping agent and propping agent outer cladding, wherein, the particle diameter of described propping agent is 0.45mm-0.8mm or 0.8mm-1.2mm, and the thickness of described inner layer resin film is 4-5 μ m, and the thickness of described outermost resin film is 4-5 μ m.As shown in Figure 1, it comprises propping agent 1 to the structure of control water type low temperature curing resin precoated sand sand control particle of the present utility model, inner layer resin film 2, outermost resin film 3.
In above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, described propping agent is quartz sand, haydite or shell particle.That is to say, the propping agent that the utility model adopts can be the conventional fracturing propping agents that use in this area, as performance index reach SY/T5108-2006(fracturing propping agents performance index and way is recommended in test) in the petroleum fracturing propping agents such as the quartz sand that requires of relevant regulations, haydite; Can be also mineral in granular form filtrates such as shell particle (as walnut shell particle) etc.Wherein, described haydite can be high-density porcelain granule support agent, middle density ceramic proppant or low-density ceramic proppant.
In above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, described inner layer resin film is thermosetting phenolic resin film.
In above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, described outermost resin film is the monocomponent polyurethane resin molding.
In above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, the mass ratio of described inner layer resin film and described propping agent is 4.5-6.0:100.
In above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, the mass ratio of described outermost resin film and described propping agent is 0.5-1.5:100.
According to embodiment of the present utility model, preferably, above-mentioned control water type low temperature curing resin precoated sand sand control particle can be prepared by following methods: propping agent is heated to more than 120 ℃; Then the propping agent more than 120 ℃ and heat-reactive phenolic resin are uniformly mixed, obtain coating the propping agent after heat-reactive phenolic resin; Again the propping agent after described coating heat-reactive phenolic resin is mixed with the monocomponent polyurethane resin agitating; Through super-dry, obtain described control water type low temperature curing resin precoated sand sand control particle.
In the utility model, above-mentioned heat-reactive phenolic resin and monocomponent polyurethane resin coat completely to propping agent, thereby the mass ratio between above-mentioned internal layer thermosetting phenolic resin film, outer monocomponent polyurethane resin molding, propping agent, basic identical with the mass ratio of each raw material consumption in preparation process.
In above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, adding the mixing time after heat-reactive phenolic resin can be 90-100s, and adding the mixing time after the monocomponent polyurethane resin can be 180-200s.
In the preparation process of above-mentioned control water type low temperature curing resin precoated sand sand control particle, preferably, the heat-reactive phenolic resin adopted is liquid thermosetting resol, and the monocomponent polyurethane resin adopted is monocomponent polyurethane cold coating (single-component polyurethane water-proof paint).In the utility model, the liquid thermosetting resol adopted and single-component polyurethane water-proof paint are the common synthetic product in this area, and it consists of the common practise of this area.
According to embodiment of the present utility model, preferably, when the above-mentioned control water type low temperature curing resin precoated sand sand control particle of preparation, can also be after propping agent be heated to more than 120 ℃, coupling agent and the mixed with proppants more than 120 ℃ is even, and then mixed with heat-reactive phenolic resin.Described coupling agent can be silane coupling agent, and more preferably, this coupling agent is KH550, and its consumption can be 2 ‰ of propping agent weight.Adopt this coupling agent can strengthen the bonding strength between heat-reactive phenolic resin and propping agent, make to coat more fully, tightr.
In above-mentioned preparation method, described drying step can be hot-air seasoning, also dryness in the sun at normal temperatures.In addition, after obtaining described control water type low temperature curing resin precoated sand sand control particle, persons skilled in the art can be as required to its pulverized, screening etc., to obtain evenly unified control water type low temperature curing resin precoated sand particle of particle diameter.
The control water type low temperature curing resin precoated sand sand control particle that the utility model provides can be applied to fracturing sand control (or earth formation deep sand control).
According to embodiment of the present utility model, preferably, the method for above-mentioned fracturing sand control can comprise the following steps:
Inject spearhead to pending stratum and clean or press off stratum;
The mixed solution that adds above-mentioned control water type low temperature curing resin precoated sand sand control particle and sand-carrying agent after pressure is steady, sand is than being 10%-30%;
Replace oil outlet pipe, then closing well, pressure release 48h, go out or bore resin sand plug in pit shaft afterwards.
In above-mentioned anti-sand method, sand is than the volume ratio that refers to control water type low temperature curing resin precoated sand sand control particle of the present utility model and sand-carrying agent.Described spearhead and sand-carrying agent are spearhead and the sand-carrying agent that the conventional back-up sand in this area is used.Persons skilled in the art can, according to the particular case of oil well, be selected and be regulated and controled kind and the consumption of spearhead and sand-carrying agent.
Control water type low temperature curing resin precoated sand sand control particle of the present utility model, when carrying out fracturing sand control, can also add the solidifying agent of resol, its hydrochloric acid that is mass concentration 3%.This solidifying agent is generally excessive use, and its used in amounts depending on the construction well particular case, generally speaking, its consumption is 10-12t.This solidifying agent is while carrying out fracturing sand control at the scene, after control water type low temperature curing resin precoated sand sand control particle of the present utility model, sand-carrying agent mix, pumps into stratum; Preferably, this solidifying agent is to add in the back-up sand later stage.
Control water type low temperature curing resin precoated sand sand control particle of the present utility model, when application, not only can be used as the sand control particle and is applied to common sand proof well, can also be applied to small hole and sleeve pipe modification well, can obtain good sand controlling result.
In application process, control water type low temperature curing resin precoated sand sand control particle of the present utility model is applied to 14 wells, be constructed into power 100%, efficient 90%, in January, 2012 to 2012, year 11 month to dates increased measure oil well output 1096t, the average crude oil water content 5% that reduces, obtained good economic benefit.As can be seen here, control water type low temperature curing resin precoated sand sand control particle of the present utility model can improve the high moisture block fracturing sand control measure effect that shakes out, and reduces formation sand production, stablizes oil well output.
Control water type low temperature curing resin precoated sand sand control particle of the present utility model adopts hot method multilayer coating film, in proppant surface such as quartz sand, shell particle, haydites, has coated the resin molding that two-layer performance is different and has prepared.Wherein, inner layer resin is 25-40 ℃, and curing heat-reactive phenolic resin can occur, but its cementation solidifying under the effect of solidifying agent and temperature is insoluble not molten three-dimensional three dimensional structure, has stronger cementing properties and ultimate compression strength.Outermost resin is for being at room temperature film-formable monocomponent polyurethane resin, it can change the surface wettability of control water type low temperature curing resin precoated sand sand control particle of the present utility model and the pore characteristic of frac-pack layer, makes control water type low temperature curing resin precoated sand sand control particle surface of the present utility model become lipophilicity.When crude oil is adsorbed in sand control particle surface and frac-pack layer surface, this monocomponent polyurethane resin molding diminishes the mobile duct of water, and the resistance of water increases, and the surface oil wettability modification of sand control particle the direction of capillary force, oil is become to power, reach the purpose that increases oil, control water.Above-mentioned structure and characteristic make control water type low temperature curing resin precoated sand sand control particle of the present utility model after injecting stratum low-temperature curing 48h, and its ultimate compression strength can be greater than 4.0MPa, and permeability to oil is greater than 32 μ m
2, water phase permeability is less than 20 μ m
2, there is good sand controlling result.
Therefore; control water type low temperature curing resin precoated sand sand control particle of the present utility model can adapt to the situation that some high water cut oil field formation temperature is lower well; and can form at sand production position cementation solidifying the sand block barrier of high compressive strength; prevent that oil, gas, well from shaking out, and then play the effect of supporting near wellbore formation, Reinforcing Shaft, protective casing.And control water type low temperature curing resin precoated sand sand control particle of the present utility model can effectively improve the high moisture block sand control measure effect of shaking out, and reduces crude oil water content, stablizes oil well output.Hence one can see that, and control water type low temperature curing resin precoated sand sand control particle of the present utility model is a kind ofly can form at cementation solidifying under low temperature environment the sand block barrier of high compressive strength, and oil is controlled the coated sand sand control particle of water thoroughly again.
The accompanying drawing explanation
The structural representation that Fig. 1 is control water type low temperature curing resin precoated sand sand control particle of the present utility model.
Embodiment
Below in conjunction with embodiment, the technical solution of the utility model and technique effect are described in further detail, but but can not be interpreted as the restriction to the utility model practical range.
In following examples, the spearhead adopted and sand-carrying agent are the conventional aqueous fracturing fluid used in this area, its manufacturer and model be there is no to particular restriction, such as this aqueous fracturing fluid can be by SY/T5107-2005(aqueous fracturing fluid method of evaluating performance) in prepared the obtaining of fracturing liquid preparation method of sample.
Embodiment 1
The present embodiment provides a kind of control water type low temperature curing resin precoated sand sand control particle, and its raw material forms and comprises: propping agent quartz sand, heat-reactive phenolic resin liquid and single-component polyurethane water-proof paint; The mass ratio of quartz sand, heat-reactive phenolic resin liquid, single-component polyurethane water-proof paint is 100:5.0:0.5.Wherein, the performance index of described quartz sand reach SY/T5108-2006(fracturing propping agents performance index and way is recommended in test) the relevant regulations requirement, its particle diameter is 0.45mm-0.8mm.
The preparation method of the control water type low temperature curing resin precoated sand sand control particle of the present embodiment comprises the following steps:
Quartz sand is heated to 120 ℃ in the high temperature cylinder heating furnace; Then take out in the quartz sand of 120 ℃ the sand mill of packing into; Add again heat-reactive phenolic resin liquid, mix 90s; Dry afterwards screening; Add again single-component polyurethane water-proof paint, mix 180s; The control water type low temperature curing resin precoated sand sand control particle crude product that taking-up obtains, by its oven dry, or, after under normal temperature, placement is dried, pulverized, with 10 purpose sieves screenings, pack is preserved, and obtains described control water type low temperature curing resin precoated sand sand control particle.
The present embodiment provides a kind of control water type low temperature curing resin precoated sand sand control particle, and its raw material forms and comprises: low-density ceramic proppant 200kg, KH5500.4kg, heat-reactive phenolic resin liquid 8kg and single-component polyurethane water-proof paint 1kg.Wherein, the performance index of described low-density ceramic proppant reach SY/T5108-2006(fracturing propping agents performance index and way is recommended in test) the relevant regulations requirement, its particle diameter is 0.5mm-0.8mm.
The preparation method of the control water type low temperature curing resin precoated sand sand control particle of the present embodiment comprises the following steps:
Low-density ceramic proppant is heated to 120 ℃ in the high temperature cylinder heating furnace; Then take out in the low-density ceramic proppant of 120 ℃ the sand mill of packing into; Add KH550, then add heat-reactive phenolic resin liquid, mix 90s; Dry, add single-component polyurethane water-proof paint after screening, mix 180s; The control water type low temperature curing resin precoated sand sand control particle crude product that taking-up obtains, by its oven dry, or, after under normal temperature, placement is dried, pulverized, with 10 purpose sieves screenings, pack is preserved, and obtains described control water type low temperature curing resin precoated sand sand control particle.
Adopt the prepared control water of above-described embodiment 1-2 of the present utility model type low temperature curing resin precoated sand sand control particle both to can be used as the sand control particle of conventional oil, gas, well, also can be used as the oleophyllie hydrophobic fracturing propping agents of high moisture block, be applied to oil field shake out improvement, oil production.
The present embodiment provides the control water type low temperature curing resin precoated sand sand control particle of Application Example 1 to carry out the method for sand control.The construction well section degree of depth is 778.2m-800m, and effective pay thickiness is 13.7m, totally 4 layers.
This anti-sand method comprises the following steps:
Inject spearhead 40m by the ground pump truck group to pending stratum
3To clean and to press off stratum;
The control water type low temperature curing resin precoated sand sand control particle and the sand-carrying agent mixed solution 15t that add embodiment 1 after pressure is steady, sand is than being 10%-30%, and the hydrochloric acid 10-12t of mass concentration 3%;
Replace oil outlet pipe, then closing well, pressure release 48h, go out or bore resin sand plug in pit shaft with hot sewage afterwards, can go into operation.
Embodiment 4
The present embodiment provides the control water type low temperature curing resin precoated sand sand control particle of Application Example 2 to carry out the method for sand control.The present embodiment is to the Liaohe Oil Field Huanxiling oil production plant, and joyous 2-12-2309 oil well carries out site operation, and the construction well section degree of depth is 1408.7m-1438.8m.Before construction, this well shakes out seriously, and pump detection period is short, and permeability plugging has water without oil, and water ratio reaches 92%.
This fracturing sand control method comprises the following steps:
Inject spearhead 40m by the ground pump truck group to pending stratum
3To clean and to press off stratum;
Add quartz sand propping agent 12m after pressure is steady
3, embodiment 2 control water type low temperature curing resin precoated sand sand control particle 10m
3, and sand-carrying agent 180m
3
Replace oil outlet pipe, then closing well, pressure release 48h, go out or bore resin sand plug in pit shaft with hot sewage afterwards, can go into operation.
After operation, this day at well initial stage production fluid 20m
3, day produce oil 3.5t, water ratio is down to 82%, and crude oil water content reduces by 10%.Go into operation approximately after two months, this well still keeps normal production, and two month to dates increase oily 274t.
It should be noted that, the present embodiment is for the particular case of joyous 2-12-2309 oil well, use the quartz sand propping agent, its performance index reach SY/T5108-2006(fracturing propping agents performance index and way is recommended in test) the relevant regulations requirement, its particle diameter is 0.45mm-0.8mm.The effect that this quartz sand propping agent plays and supports stratum, improves the stratum flow conductivity, it there is no sand control, control water effect that control water type coated sand of the present utility model has.
Following result of performance test illustrates that control water type low temperature curing resin precoated sand sand control particle of the present utility model has low-temperature curing, cementing, the oleophyllie hydrophobic function.
Test 1: cementing, solidification intensity test
Get the control water type low temperature curing resin precoated sand sand control particle that appropriate embodiment 2 makes, pour in beaker, add the hydrochloric acid of appropriate mass concentration 3%, after stirring 1min; Pull the sand control particle out and the stainless steel cylinder of the two ends band copper mesh of packing in, with central authorities' screw tightening stainless steel cylinder with holes; Then will go deep in the hydrochloric acid of mass concentration 3% with steel cylinder one end of screw, the other end sucks acid solution in stainless steel cylinder with rubber pipette bulb, after sealing, is put in water-bath, solidifying 48h more than 25 ℃, makes rock core.Wherein, those skilled in the art can be adjusted the amount of the sand control particle of embodiment 2 according to size and the shape of required rock core.
By prepared rock core, put into autoclave, slowly to its pressurization, record control water type low temperature curing resin precoated sand sand control particle that embodiment 2 makes after cementation solidifying, its ultimate compression strength >=4.0MPa.
Test 2: oleophyllie hydrophobic test
According to the rock core preparation method in test 1, adopt the control water type low temperature curing resin precoated sand sand control particle of embodiment 2 to be prepared into two block-shaped, big or small, the identical rock cores of sand control particle consumption.These two blocks of rock cores are put into to the core permeability tester, and wherein a lasting logical clear water is soaked, is rinsed, and another piece continues logical kerosene and soaked, rinses.When the 10th day that is soaked, rinses, the 20th day, the 30th day and the 40th day, measure permeability to oil and the water phase permeability of above-mentioned two blocks of rock cores, result is as shown in table 1.Wherein, the mensuration of permeability to oil and water phase permeability and method of calculation are the ordinary skill in the art.
Table 1
| Number of days | 10 | 20 | 30 | 40 |
| Permeability to oil μ m 2 | 35 | 33 | 34 | 32 |
| Water phase permeability μ m 2 | 20 | 17 | 20 | 18 |
From the above results, control water type low temperature curing resin precoated sand sand control particle of the present utility model is after low-temperature curing 48h, and its ultimate compression strength can be greater than 4.0MPa, and permeability to oil still is greater than 32 μ m at lasting logical kerosene in the time of 40 days
2, water phase permeability is less than 20 μ m at lasting logical clear water in the time of 40 days
2, there is good sand controlling result.
Claims (4)
1. control water type low temperature curing resin precoated sand sand control particle for one kind, it is characterized in that, this control water type low temperature curing resin precoated sand sand control particle comprises inner layer resin film and the outermost resin film of propping agent and propping agent outer cladding, wherein, the particle diameter of described propping agent is 0.45mm-0.8mm or 0.8mm-1.2mm, the thickness of described inner layer resin film is 4-5 μ m, and the thickness of described outermost resin film is 4-5 μ m.
2. control water type low temperature curing resin precoated sand sand control particle according to claim 1, is characterized in that, described propping agent is quartz sand, haydite or shell particle.
3. control water type low temperature curing resin precoated sand sand control particle according to claim 1, is characterized in that, described inner layer resin film is thermosetting phenolic resin film.
4. control water type low temperature curing resin precoated sand sand control particle according to claim 1, is characterized in that, described outermost resin film is the monocomponent polyurethane resin molding.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275686A (en) * | 2013-05-09 | 2013-09-04 | 中国石油天然气股份有限公司 | Water-control low-temperature cured resin coated sand control particles and sand control method |
| CN105199698A (en) * | 2015-10-27 | 2015-12-30 | 胜利油田金岛实业有限责任公司 | Novel low-temperature coated sand |
| CN106190091A (en) * | 2016-07-08 | 2016-12-07 | 新密市万力实业发展有限公司 | A kind of waterproofing type proppant of oil thoroughly and preparation method thereof |
| CN111606620A (en) * | 2020-04-13 | 2020-09-01 | 江苏鑫康新型墙体材料有限公司 | Preparation method of MU seven-point five-level ceramsite composite self-insulation brick |
-
2013
- 2013-05-09 CN CN2013202490947U patent/CN203319922U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103275686A (en) * | 2013-05-09 | 2013-09-04 | 中国石油天然气股份有限公司 | Water-control low-temperature cured resin coated sand control particles and sand control method |
| CN103275686B (en) * | 2013-05-09 | 2015-10-14 | 中国石油天然气股份有限公司 | Water-control low-temperature cured resin coated sand control particles and sand control method |
| CN105199698A (en) * | 2015-10-27 | 2015-12-30 | 胜利油田金岛实业有限责任公司 | Novel low-temperature coated sand |
| CN105199698B (en) * | 2015-10-27 | 2018-03-13 | 胜利油田金岛实业有限责任公司 | A kind of low-temperature coating sand |
| CN106190091A (en) * | 2016-07-08 | 2016-12-07 | 新密市万力实业发展有限公司 | A kind of waterproofing type proppant of oil thoroughly and preparation method thereof |
| CN111606620A (en) * | 2020-04-13 | 2020-09-01 | 江苏鑫康新型墙体材料有限公司 | Preparation method of MU seven-point five-level ceramsite composite self-insulation brick |
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