CN102391853A - Swelling-resistant shrinking and swelling agent and preparation method thereof - Google Patents

Abstract

The invention relates to a swelling-resistant shrinking and swelling agent and a preparation method thereof. The swelling-resistant shrinking and swelling agent comprises the following components in parts by weight: 30-40 parts of water, 20-30 parts of dimethyl diallyl ammoniumchloride, 10-15 parts of ethyleneamine, 0.1-0.2 part of ammonium persulfate, 0.1-0.2 part of sodium sulfite, 14-25 parts of sodium hypochlorite and 10-15 parts of inorganic nonoxidizing intermediate/strong acid. The preparation method of the shrinking and swelling agent comprises the following steps of: adding water into a sealed container, adding dimethyl diallyl ammoniumchloride, and charging nitrogen; and adding ammonium persulfate and sodium sulfite, slowly dropwise adding ethyleneamine, evenly stirring, cooling to lower than 40 DEG C, and adding the mixture into inorganic nonoxidizing intermediate/strong acid so as to form into solution A. A use method of the shrinking and swelling agent comprises the following steps of: firstly adding 70.2-100.4 parts of the solution A into 20000 parts of water, quickly injecting reinjection water into a shaft bottom in the process of construction, adding 14-25 parts of the sodium hypochlorite into a work vehicle, and injecting the water into the shaft bottom. The invention can prevent water injected into the shaft bottom from being swelled when water meets with stratum clay, and can be used for leading the swelled clay to be shrunken and swelled, so that some part of water can be removed, a part of original bore diameters can be recovered, and an oil way can be kept to be smooth.

Description

A kind ofly anti-swollenly contract swollen dose and preparation method thereof

Technical field

The present invention relates to a kind ofly anti-swollenly contract swollen dose and preparation method thereof.

Background technology

Fld generally adopts technologies such as water flood recovery and water pumping gas production, under the present situation of water resources critical shortage after getting into the middle and later periods exploitation; Oil extraction-generated waste water is back to water filling companion extraction system, both can solve the shortage of water resources problem, can eliminate the environmental issue that oil extraction-generated waste water effluxes again; Be the best outlet of oil extraction-generated waste water, re-injection water will prevent the injury to the stratum, promptly will prevent the fouling on the stratum; And, to consider also that re-injection water is behind the clay contacting of stratum to outside the problems such as pipeline corrosion; Clay swelling problem, this chemical agent consider to prevent re-injection water exactly to the stratum clay swelling, reduce the injury to the stratum; To dilated clay, the swollen technology that contracts makes it recover original aperture simultaneously.

Summary of the invention

The technical problem that the present invention solved provides and a kind ofly the water that injects the shaft bottom is prevented it meets the stratum clay swelling; Contract swollen to dilated clay simultaneously; Make it deviate from portion water, recover original part aperture, what keep oil circuit unimpeded anti-swollenly contracts swollen dose and preparation method thereof.

For solving above-mentioned technical problem, the technical scheme that the present invention takes:

A kind ofly anti-swollenly contract swollen dose, its special character is: be made up of according to weight part following material:

30 ~ 40 parts in water, 20 ~ 30 parts of dimethyl diallyl ammonium chlorides, 10 ~ 15 parts of polyethylene polyamines, 0.1 ~ 0.2 part of ammonium persulphate, 0.1 ~ 0.2 part of S-WAT, 14 ~ 25 parts of Youxiaolin, 10 parts ~ 15 parts of inorganic non-oxidizable middle strong acid.

Above-mentioned polyethylene polyamine can adopt diethylenetriamine or triethylene tetramine.

Above-mentioned inorganic non-oxidizing acid be 1% water-soluble in pH less than 2 acid.

Above-mentioned inorganic non-oxidizable middle strong acid is hydrochloric acid, phosphoric acid or Hydrogen bromide.

A kind of anti-swollen preparation method of swollen dose of contracting, its special character is: realize through following steps:

(1), the preparation of solution A: in airtight container, add entry, after adding dimethyl diallyl ammonium chloride, pour nitrogen, discharge air; Adding ammonium persulphate, S-WAT; Be warming up to 60 ~ 75 ℃, reaction 4h; Slowly splash into polyethylene polyamine then, added in 15 minutes; Be warming up to 90 ~ 100 ℃; Reacted 3 hours; The postcooling that stirs adds inorganic non-oxidizable middle strong acid formation solution A after being lower than 40 ℃;

(2), when need to use at the scene, in 20000 parts of water, add 70.2 ~ 100.4 parts of solution A earlier, when in construction process, squeezing into the shaft bottom to re-injection water soon, in Operation Van, add 14 ~ 25 parts of Youxiaolin simultaneously, inject the shaft bottom and use.

Compared with prior art, the present invention prevents it to the water that injects the shaft bottom and meets the stratum clay swelling, and it is swollen simultaneously dilated clay to be contracted, and makes it deviate from portion water, recovers original part aperture, keeps oil circuit

Unimpeded.

Embodiment

Below in conjunction with embodiment the present invention is elaborated.

The present invention is made up of according to weight part following material:

30 ~ 40 parts in water, 20 ~ 30 parts of dimethyl diallyl ammonium chlorides, 10 ~ 15 parts of polyethylene polyamines, 0.1 ~ 0.2 part of ammonium persulphate, 0.1 ~ 0.2 part of S-WAT, 14 ~ 25 parts of Youxiaolin, 10 parts ~ 15 parts of inorganic non-oxidizable middle strong acid.

Above-mentioned polyethylene polyamine can adopt diethylenetriamine or triethylene tetramine.

Above-mentioned inorganic non-oxidizing acid be 1% water-soluble in pH less than 2 acid.

Above-mentioned inorganic non-oxidizable middle strong acid is hydrochloric acid, phosphoric acid or Hydrogen bromide.

Preparing method of the present invention, realize through following steps:

(1), the preparation of solution A: in airtight container, add entry, after adding dimethyl diallyl ammonium chloride, pour nitrogen, discharge air; Adding ammonium persulphate, S-WAT; Be warming up to 60 ~ 75 ℃, reaction 4h; Slowly splash into polyethylene polyamine then, added in 15 minutes; Be warming up to 90 ~ 100 ℃; Reacted 3 hours; The postcooling that stirs adds inorganic non-oxidizable middle strong acid formation solution A after being lower than 40 ℃;

(2), when need to use at the scene, in 20000 parts of water, add 70.2 ~ 100.4 parts of solution A earlier, when in construction process, squeezing into the shaft bottom to re-injection water soon, in Operation Van, add 14 ~ 25 parts of Youxiaolin simultaneously, inject the shaft bottom and use.

Embodiment 1:

The present invention is made up of according to weight part following material:

30 parts in water, 20 parts of dimethyl diallyl ammonium chlorides, 10 parts of diethylenetriamines, 0.1 part of ammonium persulphate, 0.1 part of S-WAT, 14 parts of Youxiaolin, 10 parts of hydrochloric acid.

Realize through following steps again:

(1), the preparation of solution A: in airtight container, add entry, after adding dimethyl diallyl ammonium chloride, pour nitrogen, discharge air; Adding ammonium persulphate, S-WAT; Be warming up to 60 ℃, reaction 4h; Slowly splash into diethylenetriamine then, added in 15 minutes; Be warming up to 90 ℃; Reacted 3 hours; The postcooling that stirs adds hydrochloric acid formation solution A after being lower than 40 ℃;

(2), when need to use at the scene, in 20000 parts of water, add 70.2 parts of solution A earlier, when in construction process, squeezing into the shaft bottom to re-injection water soon, in Operation Van, add 14 parts of Youxiaolin simultaneously, inject the shaft bottom and use.

Embodiment 2:

The present invention is made up of according to weight part following material:

40 parts in water, 30 parts of dimethyl diallyl ammonium chlorides, 15 parts of triethylene tetramines, 0.2 part of ammonium persulphate, 0.2 part of S-WAT, 25 parts of Youxiaolin, 5 parts of phosphatase 11s.

Preparing method of the present invention, realize through following steps:

(1), the preparation of solution A: in airtight container, add entry, after adding dimethyl diallyl ammonium chloride, pour nitrogen, discharge air; Adding ammonium persulphate, S-WAT; Be warming up to 75 ℃, reaction 4h; Slowly splash into triethylene tetramine then, added in 15 minutes; Be warming up to 100 ℃; Reacted 3 hours; The postcooling that stirs adds phosphoric acid formation solution A after being lower than 40 ℃;

(2), when need to use at the scene, in 20000 parts of water, add 100.4 parts of solution A earlier, when in construction process, squeezing into the shaft bottom to re-injection water soon, in Operation Van, add 25 parts of Youxiaolin simultaneously, inject the shaft bottom and use.

Embodiment 3:

The present invention is made up of according to weight part following material:

35 parts in water, 25 parts of dimethyl diallyl ammonium chlorides, 12.5 parts of triethylene tetramines, 0.15 part of ammonium persulphate, 0.15 part of S-WAT, 19.5 parts of Youxiaolin, 12.5 parts of Hydrogen bromides.

Preparing method of the present invention, realize through following steps:

(1), the preparation of solution A: in airtight container, add entry, after adding dimethyl diallyl ammonium chloride, pour nitrogen, discharge air; Adding ammonium persulphate, S-WAT; Be warming up to 68 ℃, reaction 4h; Slowly splash into triethylene tetramine then, added in 15 minutes; Be warming up to 95 ℃; Reacted 3 hours; The postcooling that stirs adds Hydrogen bromide formation solution A after being lower than 40 ℃;

(2), when need to use at the scene, in 20000 parts of water, add 85.3 parts of solution A earlier, when in construction process, squeezing into the shaft bottom to re-injection water soon, in Operation Van, add 19.5 parts of Youxiaolin simultaneously, inject the shaft bottom and use.

The swollen agent of contracting of adopting embodiment 3 to make makes an experiment:

Experimental data:

Index	Performance	Detection method
			2% anti-swollen rate	78%	According to measuring in " the clay stabilizer method of evaluating performance is used in the SY-T5971-94 water filling "
The 3% swollen rate that contracts	40%	Measure according to following method

Swollen rate measuring method contracts:

Screening wilkinite 3-5g dries by the fire 3h in 105 ℃ of baking ovens, take by weighing 0.5g wilkinite (accurately to 0.001g); Pack in the 10ml centrifuge tube, add 10ml zero(ppm) water, fully shake up; At room temperature place 3h; Packing in the whizzer, is centrifugal 15min under the 1500r/min at rotating speed, reads the volume v1 of wilkinite in water.

In above-mentioned centrifuge tube, add and a certain amount ofly anti-ly swollenly contract swollen dose, making the anti-swollen concentration that contracts swollen dose is 6%, fully shakes up, and leaves standstill 2h, in the whizzer of packing into, is centrifugal 15min under the 1500r/min at rotating speed, reads the volume v2 of wilkinite in the anti-swollen swollen agent solution that contracts.

By formula the swollen rate that contracts is calculated in (1):

……………………………………（1）

In the formula: x2---the swollen rate that contracts, %;

The settling volume of v1---wilkinite in not adding the anti-swollen swollen agent solution that contracts, ml;

The settling volume of v2---wilkinite in being added with the anti-swollen swollen agent solution that contracts, ml.

Respectively get 100ml from upper, middle and lower during check, be contained in respectively behind the thorough mixing in two sample bottles, one bottle of check, one bottle keeps sample.

Claims (5)

1. one kind anti-is swollenly contracted swollen dose, it is characterized in that: be made up of according to weight part following material:

30 ~ 40 parts in water, 20 ~ 30 parts of dimethyl diallyl ammonium chlorides, 10 ~ 15 parts of polyethylene polyamines, 0.1 ~ 0.2 part of ammonium persulphate, 0.1 ~ 0.2 part of S-WAT, 14 ~ 25 parts of Youxiaolin, 10 parts ~ 15 parts of inorganic non-oxidizable middle strong acid.

2. according to claim 1ly a kind ofly anti-swollenly contract swollen dose, it is characterized in that: described polyethylene polyamine can adopt diethylenetriamine or triethylene tetramine.

3. according to claim 1ly a kind ofly anti-swollenly contract swollen dose, it is characterized in that: described inorganic non-oxidizing acid be 1% water-soluble in pH less than 2 acid.

4. describedly a kind ofly anti-swollenly contract swollen dose according to claim 1 or 3, it is characterized in that: described inorganic non-oxidizable in strong acid be hydrochloric acid, phosphoric acid or Hydrogen bromide.

5. anti-swollen preparation method of swollen dose of contracting is characterized in that: realize through following steps:

(1), the preparation of solution A: in airtight container, add entry, after adding dimethyl diallyl ammonium chloride, pour nitrogen, discharge air; Adding ammonium persulphate, S-WAT; Be warming up to 60 ~ 75 ℃, reaction 4h; Slowly splash into polyethylene polyamine then, added in 15 minutes; Be warming up to 90 ~ 100 ℃; Reacted 3 hours; The postcooling that stirs adds inorganic non-oxidizable middle strong acid formation solution A after being lower than 40 ℃;

(2), when need to use at the scene, in 20000 parts of water, add 70.2 ~ 100.4 parts of solution A earlier, when in construction process, squeezing into the shaft bottom to re-injection water soon, in Operation Van, add 14 ~ 25 parts of Youxiaolin simultaneously, inject the shaft bottom and use.