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Ultra-high density composite brine drilling fluid system D-ULTRAWEI

Aiming at the technical problems such as fluid loss reduction, rheology and inhibition coordination, and well wall stability of ultra-high density drilling fluid system under high temperature and high pressure conditions, the ultra-high density composite brine drilling fluid system with a density of 2.6g/cm3 was developed by carrying out research work such as optimization of high-temperature resistant drilling fluid treatment agent, optimization of drilling fluid particle size distribution, and optimization of drilling fluid system composition.

Introduce

Aiming at the technical problems such as fluid loss reduction, rheology and inhibition coordination, and well wall stability of ultra-high density drilling fluid system under high temperature and high pressure conditions, the ultra-high density composite brine drilling fluid system with a density of 2.6g/cm3 was developed by carrying out research work such as optimization of high-temperature resistant drilling fluid treatment agent, optimization of drilling fluid particle size distribution, and optimization of drilling fluid system composition.

 

 

项目

AV 

mPa•s

PV  

mPa•s

YP

Pa

FLAPI

mL

180FLHTHP

mL

200/16h

岩屑回收率

%

润滑系数

备注

数据

149

93

56

0

--

--

0.09

室温

136

89

47

0.2

15.0

98.0

0.10

200℃/16h

 

The ultra-high temperature brine system provides:

 

- Strong salt resistance

 

- Good compatibility

 

- A wide range of applicable densities improves the problem of barite settling

 

- Good thermal stability under high temperature and pressure conditions

 

- Strong anti-pollution ability, good anti-pollution ability to inferior soil, bivalent ions and formation gases

 

- Drilling fluid rheology can be controlled

 

High temperature and high pressure filtration loss is small, mud cake is thin

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