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CMC for Oil drilling |
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1、 Product characteristic
CMC has high performance in dehydration control and good resistance to salt and temperature change. It can effectively control the rheology of slurry, with good non-Newtonian fluid performance.
CMC-HV (high viscosity), as a high-efficiency tackifier, can help to produce high volume of slurry as well as keep the moisture in the mud. CMC-LV (low viscosity) is a good fluid loss additive in mud which also shows high performance of dehydration control. Meanwhile it can also be used as a gel fracturing fluid because of its very good gelatin ability, high proppant carrying capacity, easier gel-broken and low residue. |
| 2、Specification(CMC for technical level) |
|
Table one |
|
Model |
Performance |
Target |
|
CMC-HVT |
Viscometer 600rpm reading |
In deionized water |
≥30 |
|
in 40g/L salt water |
≥30 |
|
In saturated brine |
≥30 |
|
Filtration /cm3 |
≤10 |
|
CMC-LVT |
Viscometer 600prm reading |
≤90 |
|
Filtration /cm3 |
≤10 |
| Specification(CMC for drilling fluid) |
|
Table two |
|
Project |
Target |
|
LV-CMC |
MV-CMC |
HV-CMC |
|
Appearance |
Free flowing white or yellowish powder, non-caking |
|
Loss on drying % |
≤10 |
|
Purity % |
≥80 |
≥85.0 |
≥95.0 |
|
Substitution value |
≥0.80 |
≥0.65 |
≥0.80 |
|
PH value |
7.0-9.0 |
7.0-9.0 |
6.5-8.0 |
| Target for drilling fluid |
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Table three |
| Category |
Project |
Target |
|
Distilled water |
Salt water |
Saturated brine |
| Base sauce |
Filtration ml |
60±10 |
90±10 |
100±10 |
|
Apparent viscosity mpa.s |
≤6 |
≤6 |
≤10 |
|
PH value |
8.0±1.0 |
8.0±1.0 |
7.5±1.0 |
| HV-CMC |
Making the slurry rate m/t |
≥200 |
≥150 |
≥160 |
| LV-CMC |
Filration 10 ml |
Dosage g/L |
|
≤7.0 |
≤10.0 |
| Apparent viscosity mpa.s |
|
≤4.0 |
≤6.0 |
| MV-CMC |
Dosage g/L |
6.0 |
14.0 |
23.0 |
|
Apparent viscosity mpa.s |
≥15 |
≥15 |
15 |
|
Filtration ml |
≤9 |
≤9 |
≤8 |
| 3、Carries standard |
| Table one Carries out standard GB/T5005-2001 API 13A API 13A Table two Carries out standard SY5093-92 OCMA |
| 4、packing ,marks,transportation and storage |
●Packing
Enclosed in Polyethylene film inner-bag and outer-bag of plastic woven or composite-paper. Net weight 25kg/bag.
●Marks
Shipping marks include names of manufacturer, product and the brand, numbers of executive standard and product model, batch number, manufacturing date, net weight and other essential marks.
●Transportation and storage
CMC should be stored in clean, dry and ventilated warehouse for transportation or storage. Do not store, mix and ship it with poisonous materials or materials with peculiar smell together. CMC is easy to absorb water, and requires waterproof measures and pay attention to package breakage in the transportation process. The shelf life is 24 months after the manufacturing date on the condition that the packing, transportation and storage are in accordance with this standard. | |
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