During the construction process,the non-permeable oil layer protective agent can quickly form a non-permeable shielding zone with a certain strength,which can effectively prevent the liquid and solid phases in the working fluid from invading the reservoir and protect the reservoir from damage.The shielding zone can be removed through perforation reverse drainage,which can significantly reduce the fluid loss of the mud without affecting the rheological properties of the mud.It has excellent temperature resistance,is not affected by electrolyte pollution,is non-toxic,and is harmless.Especially in terms of leakage in pores and micro-cracks,the leakage plugging speed is fast and the effect is good.The main feature of this product is that it has no foaming and thickening properties,and it can protect the oil layer while preventing collapse and plugging
leakage.
■ Technical Data：
| Item | Parameter | |
| Appearance | Gray Brown Powder | |
| Moisture（%） | ≤10.0 | |
| Fineness (Sieve Hole 0.90mm，%） | ≤10.0 | |
| Filtration（mL） | API FL | Sand bed |
| Base slurry | 20±5 | Total loss |
| Base slurry+2% | ≤18 | 0 |
| Base slurry+2%（150℃，16h） | ≤20 | 0 |
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Non-penetrating Oil Layer Protective Agent
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