Perforation quality is continuously puzzled by the accuracy of perforation depth.

如何提高射孔深度的精度一直是射孔质量控制的难题。

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The coating on the stock, which can cause the perforation to become lighter in depth than what was anticipated and less likely to detach as desired unless this factor is considered.

涂层的股票，这可能会导致穿孔，成为较轻的深度比预计所需，除非被认为是这个因素，不太可能分离。

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The purpose of perforation is penetrating the casing tube, cement sheath and a certain depth of the formation and forming unhindered channels for oil and gas flowing into the well casing.

射孔目的就是射穿套管、水泥环和地层内一定的深度，为地层的油气流入至井筒，形成一个顺畅的通道。

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