English
Main ingredients
The polyaluminum anti collapse agent used in drilling fluid is formed by multi-step polymerization of polyaluminum salts, humic acids, etc. under the protection of potassium hydroxide. By combining with conventional electrolytes, various shale swelling can be suppressed, and insoluble composite aluminum salts can be formed in formation pores and microcracks to reduce instability factors in shale matrix.
Nature and Use
The product is a black or black gray powder, which is an excellent chemical reaction type sealing and anti collapse agent, and also has the functions of inhibiting gypsum dissolution and solid-phase cleaning.
Main technical indicators
|
project |
Indicator |
|
Appearance |
Black or black gray powder |
|
Moisture，%（mass fraction） ≤ |
10 |
|
fineness（Sieve hole 0.90mm sieve residue），% ≤ |
10 |
|
PH value ≥ |
10.5 |
|
Relative inhibition rate，% ≥ |
80 |
Product features
1、Effectively suppress the hydration and expansion of clay, and control the peeling of shale blocks；
2、Improving the cleanliness and stability of the wellbore, reducing the risk of drill bit mud pockets and various stuck drill bits；
3、Strong anti pollution ability, suitable for various saline, saturated saline, and seawater drilling and completion fluids；
4、Effectively protecting oil and gas reservoirs；
5、Non toxic, pollution-free to the environment。
6、Good compatibility with treatment agents。
Usage
Recommended dosage：（Volume ratio）
Recommended dosage increase0.5%～1.0%。
