CN102994056A - Polymer leakage preventing and plugging agent while drilling - Google Patents
Polymer leakage preventing and plugging agent while drilling Download PDFInfo
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- CN102994056A CN102994056A CN 201110290360 CN201110290360A CN102994056A CN 102994056 A CN102994056 A CN 102994056A CN 201110290360 CN201110290360 CN 201110290360 CN 201110290360 A CN201110290360 A CN 201110290360A CN 102994056 A CN102994056 A CN 102994056A
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Abstract
The invention discloses a polymer leakage preventing and plugging agent while drilling, which comprises the following components in percentage by weight: 21.0-28.0% of AMPS (2-acrylamido-2-methyl propane sulfonic acid), AA (acrylic acid) and AM (acrylamide), 65.0-69.0% of water, and the balance of an initiator and a cross-linking agent. The polymer leakage preventing and plugging agent while drilling has excellent plugging effect, can achieve the purpose of plugging while drilling and plugging while leaking, has high plugging rate and high pressure bearing property, and greatly improves the plugging effect of well drilling.
Description
Technical field
The present invention relates to a kind of polymkeric substance with boring leak-proof sealing agent.
Background technology
Drill-feeding plugging agent is domestic and international in recent years development, the good class New Kind of Plugging Agent of result of use.Existing with boring 801 plugging agents at present, it is the powder-like product that forms through the scientific approach complex treatment with multiple macromolecular compounds such as Chinese bandoline wood powder (a kind of timber that contains vegetable jelly forms through pulverizing, and it contains Mierocrystalline cellulose, xylogen, poly-pentose etc.), humate, carboxymethyl celluloses.The NFU plugging agent, it is composite and be equipped with powdery or the granulated product that the inert material of different varieties, different grain size, different dosages forms through scientific approach with multiple macromolecular compounds such as nanmu root powder (a kind of Purpleback Murdannia thicket tree root that contains vegetable jelly forms through pulverizing), humic acids high-valency metal salt, starch sodium carboxymethyl, polyacrylamides.The NFDF8012 plugging agent, it is through composite powdery or the granulated product that forms and form with addition of the inert material of difference amount, different grain size, different varieties of scientific formula, scientific approach with multiple macromolecular compounds such as nanmu root powder, humic acids high-valency metal salt or derivatives thereof, ammonium methylcellulose gum, polyacrylamide, leather powder.These drill-feeding plugging agents in the geology coalfield in 23 provinces in the whole nation, district, more than 300 unit of the industries such as metallurgy, coloured, nuclear industry, oil, chemical industry, building materials use.Find that by research and rig-site utilization drill-feeding plugging agent has the following advantages:
When (1) leakage occurs in drilling well, can accomplish that with brill, the rear 30min that generally feeds intake takes effect, and need stop the time for the treatment of hardly with stifled with leaking with stifled.
(2) one times the shutoff success ratio is high, and the bearing capacity of leakage channel is strong after the shutoff, is difficult for repeating leakage after the drill-feeding plugging agent leak stopping.
(3) it both can be used as plugging agent, can be used as again nonclay flush fluid or mud conditioner and used, and it does not only destroy the performance of washing fluid, and can also improve the adjustment property of flush fluid.
(4) it cooperates related materials (such as inert material, sea-tangle etc.), adopts the different comprehensive regulations such as blocking method leakages, can process various leakages.
(5) this treatment agent has preferably anti-salt property and certain heat-resisting property, and effect is best in the stratum of well depth 2～3 kms.
(6) it has preferably oilness, anti-collapse property, retaining wall effect.
(7) it can cooperate some material to make special slurries improvement Special complex stratum.
(8) using method is easy, consumption is few, cost is low, can directly add in the mud circulation, leave standstill or pressure sealing, also can be made into the slurries pumping, also can be made into thick slurries from the aperture or handling machinery give, also can make leak stopping ball throwing etc.
(9) material source is wide, and is nontoxic, harmless, pollution-free.
In recent years, very fast in research and the application facet development of leak-proof leak-stopping technology both at home and abroad, developed multiple patching materials, developed the drilling fluid system of multiple leak-proof leak-stopping, wherein bridge blinding and gel blocking technology have obtained using more widely.But these methods also do not solve the root problem of leakage, mainly are that bearing capacity is poor.Reason is that the grain size distribution of conventional plugging agent is unreasonable, and particle shape is bad with the form fit in the crack of being blocked up, duct, lacks the reactive force that stretches into the borehole wall, greatly reduces shutoff efficient.And the hydroexpanding body plugging agent can reach this reactive force, improves the bearing capacity of the borehole wall.
Hydroexpanding body claims again super-strong moisture absorbing resin (super Absorbent Resin is called for short SAR), is a kind of novel functional high-polymer patching materials, has high suction, water conservation and pressure-bearing function.It is a kind of cancellated high molecular synthetic resin with multiple geometrical shape, and water-swellable also forms the elastogel with some strength, has good temperature resistance, salt resistance and stability.Hydroexpanding body can use separately or mix use with the leakage of control drilling fluid with other patching materialss.The hydroexpanding body particle is under ambient pressure, elastic deformation occurs easily enter crack or blowhole, be detained and produce and stop up, still can continue water-swelling after particle enters drop ply simultaneously, thereby prevention drilling fluid leakage, strengthened plugging effect, the filling effect of hydroexpanding body in the crack improved the intensity on leakage stratum.Compare with traditional patching materials; the hydroexpanding body consumption is few, and it is simple and convenient to construct, and has good shut-off capacity; be the novel material of a kind of very promising leak stopping and protection reservoir to some carbonate cracks, cavernous formation especially, be suitable for the plugging operations of fissured formation.
Preventing having unique advantage aspect perviousness and the fractured leakage with boring leak-proof sealing agent.Its less investment, method is simple, do not need to stop bore to process, decrease treatment time and the expense of oil gas leakage, for the drilling speed that improves the leakage stratum with reduce drilling cost and be significant.
Summary of the invention
Purpose of the present invention provides a kind of polymkeric substance with boring leak-proof sealing agent in order to overcome the deficiencies in the prior art and defective, and this drill-feeding plugging agent plugging effect is good, can reach with boring with stifled, with leaking with stifled, sealing ratiod is high, bearing capacity is large, has significantly improved the plugging effect of drilling well.
Purpose of the present invention is achieved through the following technical solutions: a kind of polymkeric substance is with boring leak-proof sealing agent, comprise AMPS, AA, AM, initiator and linking agent, by weight percentage, AMPS, AA, AM account for 21.0%～28.0%, water accounts for 65.0%～69.0%, and surplus is initiator and linking agent.
By weight, AMPS: AA: AM is 1: 2: 6.
By weight, initiator: linking agent is 3: 1.
By weight percentage, AMPS, AA, AM account for 24.7%, and water accounts for 68.0%, and surplus is initiator and linking agent.
Described initiator is Na
2SO
3
Described linking agent is NMBA.
Above-mentioned AM is acrylamide, is mainly used in improving the molecular weight of polymkeric substance; AMPS is 2-methyl-2-acrylamido propanesulfonic acid, mainly improves the temperature resistant antisalt performance of polymkeric substance; AA is vinylformic acid, is used for improving the water-retaining capacity of polymkeric substance; NMBA is N, and N-methylene-bis acrylic amine is lower same.
In sum, the invention has the beneficial effects as follows: plugging effect is good, can reach with boring with stifled, and with leaking with stifled, sealing ratiod is high, and bearing capacity is large, has significantly improved the plugging effect of drilling well.
Embodiment
Below in conjunction with embodiment, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited to this.
Embodiment:
The present invention relates to a kind of polymkeric substance with boring leak-proof sealing agent, comprise AMPS, AA, AM, initiator and linking agent, by weight percentage, AMPS, AA, AM account for 21.0%～28.0%, and water accounts for 65.0%～69.0%, and surplus is initiator and linking agent.
By weight, AMPS: AA: AM is 1: 2: 6.
By weight, initiator: linking agent is 3: 1.
By weight percentage, AMPS, AA, AM account for 24.7%, and water accounts for 68.0%, and surplus is initiator and linking agent.
Described initiator is Na
2SO
3
Described linking agent is NMBA.
In order to obtain the mass percent of best 2-methyl-2-acrylamido propanesulfonic acid, vinylformic acid, acrylamide, the present invention tests.This experiment is 10%, 11.1%, 12.5%, 14.3% in the mass percent of 2-methyl-2-acrylamido propanesulfonic acid, vinylformic acid, acrylamide, carries out in 16.7%, 20%, 25% the situation, and the result of drill-feeding plugging agent performance is as shown in the table:
| Mass percent (%) | 11 | 12.1 | 13.5 | 15.3 | 17.1 | 22 | 25 |
| Product strength | Very poor | Very poor | A little less than | Generally | Moderate | Greatly | Crisp |
| Reaction times (h) | 6 | 5 | 3 | 1 | 0.6 | 0.6 | 0.2 |
| Rate of expansion | 51 | 57 | 71 | 101 | 128 | 92 | 73 |
As can be seen from the above table, along with the increase of monomer concentration, the intensity of hydroexpanding body increases gradually, and the time shorten of reaction when concentration reaches 25%, almost produces implode.And the imbibition ability of hydroexpanding body is along with the increase first increases and then decreases of monomer concentration, and it is maximum that monomer concentration reaches when being 16.7%.This is because monomer concentration when too high, is difficult to heat radiation on the one hand, and implode easily occurs, on the other hand under high conversion, and reaction rate accelerates, chain transfer reaction increases, and branching and the aggravation of self-crosslinking degree have reduced absorbent; And monomer concentration is crossed when hanging down, and then speed of reaction is slow, and molecular weight of product is little, and soluble part is many, and absorbent is variation also.Therefore, the span of 2-methyl of the present invention-2-acrylamido propanesulfonic acid, vinylformic acid, acrylamide mass percent is 16.0%～17.0%, and is preferably 16.7%.
As mentioned above, just can realize preferably the present invention.
Claims (6)
1. a polymkeric substance is characterized in that with boring leak-proof sealing agent comprise AMPS, AA, AM, initiator and linking agent, by weight percentage, AMPS, AA, AM account for 21.0%～28.0%, and water accounts for 65.0%～69.0%, and surplus is initiator and linking agent.
2. a kind of polymkeric substance according to claim 1 is characterized in that with boring leak-proof sealing agent by weight, AMPS: AA: AM is 1: 2: 6.
3. a kind of polymkeric substance according to claim 1 is characterized in that with boring leak-proof sealing agent by weight, initiator: linking agent is 3: 1.
4. according to claim 1,2 or 3 described a kind of polymkeric substance are with boring leak-proof sealing agent, it is characterized in that by weight percentage, AMPS, AA, AM account for 24.7%, water accounts for 68.0%, surplus is initiator and linking agent.
5. according to claim 1,2 or 3 described a kind of polymkeric substance are with boring leak-proof sealing agent, it is characterized in that described initiator is Na
2SO
3
6. according to claim 1,2 or 3 described a kind of polymkeric substance are with boring leak-proof sealing agent, it is characterized in that described linking agent is NMBA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110290360 CN102994056A (en) | 2011-09-14 | 2011-09-14 | Polymer leakage preventing and plugging agent while drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110290360 CN102994056A (en) | 2011-09-14 | 2011-09-14 | Polymer leakage preventing and plugging agent while drilling |
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| CN102994056A true CN102994056A (en) | 2013-03-27 |
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| CN 201110290360 Pending CN102994056A (en) | 2011-09-14 | 2011-09-14 | Polymer leakage preventing and plugging agent while drilling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396778A (en) * | 2013-06-24 | 2013-11-20 | 西南石油大学 | Water-soluble heat-resistant and salt-tolerant AM/AA/AMPS/NPAB polymer oil displacement agent and its synthesis method |
| CN104449613A (en) * | 2014-10-31 | 2015-03-25 | 中国石油化工集团公司 | Water-absorbent resin temporary plugging agent and preparation method thereof |
| CN105860625A (en) * | 2016-05-25 | 2016-08-17 | 褚红芬 | Phastgel plugging agent |
| CN116003686A (en) * | 2023-01-05 | 2023-04-25 | 中钢集团马鞍山矿山研究总院股份有限公司 | Preparation method of super-absorbent microgel particles for emergency stopping and slowing |
| CN116143970A (en) * | 2023-01-05 | 2023-05-23 | 中钢集团马鞍山矿山研究总院股份有限公司 | Emergency microgel particle material for quick plugging and water stopping |
-
2011
- 2011-09-14 CN CN 201110290360 patent/CN102994056A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396778A (en) * | 2013-06-24 | 2013-11-20 | 西南石油大学 | Water-soluble heat-resistant and salt-tolerant AM/AA/AMPS/NPAB polymer oil displacement agent and its synthesis method |
| CN103396778B (en) * | 2013-06-24 | 2015-05-20 | 西南石油大学 | Water-soluble heat-resistant and salt-tolerant AM/AA/AMPS/NPAB polymer oil displacement agent and its synthesis method |
| CN104449613A (en) * | 2014-10-31 | 2015-03-25 | 中国石油化工集团公司 | Water-absorbent resin temporary plugging agent and preparation method thereof |
| CN105860625A (en) * | 2016-05-25 | 2016-08-17 | 褚红芬 | Phastgel plugging agent |
| CN116003686A (en) * | 2023-01-05 | 2023-04-25 | 中钢集团马鞍山矿山研究总院股份有限公司 | Preparation method of super-absorbent microgel particles for emergency stopping and slowing |
| CN116143970A (en) * | 2023-01-05 | 2023-05-23 | 中钢集团马鞍山矿山研究总院股份有限公司 | Emergency microgel particle material for quick plugging and water stopping |
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Application publication date: 20130327 |