Xitao Polymer Co., Ltd.
LOCATION: Profile Control > Online emulsion polymer for EOR
Online emulsion polymer ZX-5 for EOR

Polymer for oil recovery is one of the important means in oilfield production that has been widely applied on EOR. Great success achieved in main blocks of Daqing, Shengli, karamay oilfield etc. 

According to the field geology and water quality, our R&D specialists have done a lot of research work,at the same time makes the application performance testing, R&D from several aspects as belows:

*Design of the molecular structure(introduction of functional monomer & optimization of the dosage)

* Selection& optimization of polymerization methods, oil phase and emulsifier 

* Performance and index check

Specification:

Appearance: white opaque emulsion

Solid content, %: 35min.

Viscosity(75℃,mPa.s): 10min.

Anti-freezing:-17℃

Molecular weight:15-20MM

Hydrolysis degree,%: 25-30

Storage: 6Months

Dissolving: dissolves well in 6000mg/L water.

►Performance test (by CNPC lab)

1) Fast dissolving for online application.

Type

Required temp,℃

Dissolving concentration,‰

Fully dissolved,min.

Powder polymer

≥20

1

60

Normal emulsion

≥10

1

3

XITAO EMULSION POLYMER ZX5

≥5

1

3

2) Low Filter factor

Type

XITAO EPAM ZX-5

Polymer powder by other supplier

Concentration,‰

1

1

Viscosity, mPa.s

22

20

T100ml,s

1203

6530

T200ml,s

2570

9862

T300ml,s

4033

15439

Filter factor

1.1

1.7


3) Good anti-shearing performance

During the oil displacement process, the solution will be sheared through the process of preparation,pumping,injection and flowing in the layer, which can cause the break of the molecular chain,reduce the viscosity therefore affect the result.So need to check the anti-shearing performance.

Choose 3 types of product, with same dissolving concentration, test the initial viscosity and the viscosity after sheared for 10minutes.


TypeXITAO EPAM ZX-5Polymer powder by other supplierPolymer emulsion by other supplier
Dissolving concentration,‰111
Initial viscosity,mPa.s222022
Viscosity (170s-1 after 10 minutes,mpa.s)17.51515
Viscosity retention rate,%80 75 68 

4) Good anti-salt performance


图片10.jpg

Viscosity in different NaCl of ZX-5 vs other product with same M.W.


5) Good anti-aging performance

Polymer normally stays in reservoir for 1 month, which might affect the polymer performance for the thermal degrade or biodegrade, to maintain the polymer function, to evaluate the aging stability is important.

图片11.jpg

After 40days under 75℃,XITAO ZX-5 is stable, no fluffy masses or sediment.

Xitao Polymer Co. Ltd.
Tel:+86-10-60491602
Fax:+86-10-60492072
Email: river@xitao.com
Mobile/what’s app:+86-13911651774
New plant: Yankougang Polymer Area, Rudong,Jiangsu,China
Plant add: Hou Wanggezhuang,Mulin,Shunyi, Beijing, 101309,China
Office add: 10H Oriental Kenzo Office Building, No. 48 Dongzhimenwai Dajie, Dongcheng Dist., Beijing, 100027,China