The perforations have a relatively large diameter and the perforation tunnel is deep.
射孔孔眼具有相对较大的直径，而且射孔孔道很深。
A perforating charge designed to provide a long perforation tunnel, such as may be required to bypass any near-wellbore damage.
为提供旁通近井地带损害等所需的长射孔孔道而设计的射孔弹。
A Middle East operator had a vertical natural completion and wanted to improve contribution percentage from each perforation tunnel.
一家中东地区的作业者，希望通过优化射孔来提高垂直井普通完井的油藏产量。
Because of the overbalance conditions at the time of perforating, the perforating acid is forced into the newly formed perforation tunnel to stimulate the crushed zone.
由于在射孔时处于过平衡状态，射孔酸被压入新形成的射孔孔道内并对压碎区进行增产处理。
Among 16 cases, ureteral meatus disruption 6 cases, ureter perforation 7 cases, sleeve exfoliation of mucous membrane 1 case, ureter fracture 1 case, tunnel under the mucous membrane 1 case.
结果该组16例中，输尿管口撕裂6例，输尿管穿孔7例，输尿管黏膜袖状剥离1例，输尿管断裂1例，黏膜下隧道1例。
Among 16 cases, ureteral meatus disruption 6 cases, ureter perforation 7 cases, sleeve exfoliation of mucous membrane 1 case, ureter fracture 1 case, tunnel under the mucous membrane 1 case.
结果该组16例中，输尿管口撕裂6例，输尿管穿孔7例，输尿管黏膜袖状剥离1例，输尿管断裂1例，黏膜下隧道1例。
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