Results 51 to 60 of about 371 (102)

日光油田Cardium组致密油大位移水平井钻井实践

Shiyou jixie, 2014
针对日光油田Cardium组致密油开发需要大量高效低成本的水平井钻井和多段压裂等特点，研究并应用了致密油大位移水平井钻井技术。考虑大位移水平井复合钻井的特殊要求，建立了三段组合圆弧井眼轨道模型，深入研究了井身结构、油基钻井液、钻头优化和钻具组合等关键技术。对3口先导试验大位移水平井丛式井组和3口相邻水平井丛式井组的经济效益进行了评价，评价结果表明，其平均每米水平段长度的钻完井费用比相邻丛式井组节约22%、钻井周期比相邻丛式井组减少42%，其初始平均日产量和6个月总产量分别是相邻丛式井组的1.6倍和1 ...
谈, 心, 贺婷婷, 王富群, 王志刚   +4 more
doaj  

[Case of tooth autotransplantation with robotic surgery assistance]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Liu Y, Song J, Chen X, Zhang C, Chen S, Zhang J, Gu Z.   +6 more
europepmc   +1 more source

[Application and research progress of mandibular distraction osteogenesis in craniofacial microsomia]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li L, Zhang Z.
europepmc   +1 more source

[Short-term effectiveness of minimally invasive treatment for posterolateral depressed tibial plateau fractures assisted by robots and arthroscopy]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Chen Z, Du X, Luo G, Tang D, Wang X, Li Y, Sun K, Duan Y, Shui W.   +8 more
europepmc   +1 more source

[Construction and Clinical Validation of a Risk Early Warning Model for Mechanical Ventilation-Associated Pneumonia in Older Patients With Lung Cancer]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wang Z, Shi M, Zhao P, Zhou Y, Zhang Z, Qu G, Fang X.   +6 more
europepmc   +1 more source

[Application of precise-guided temporary fixation assistive devices in proximal femoral nail antirotation fixation for femoral intertrochanteric fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Qu W, Zhou H, Zhang X, Xiang Q, Shen W, Yu X, Chen W, Li X.   +7 more
europepmc   +1 more source

[TiRobot-assisted minimally invasive treatment of geriatric fragility fractures of the pelvis]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li C, Dai Y, Cai W, Situ X, Zeng Y, Du X, Hong S.   +6 more
europepmc   +1 more source

[Research progress on the manufacturing technology of hollow microneedles]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhou S, Zhou H, Du X, Yu Z, Xu T, Zhao S, Su P, Zhang L, Fu G, Liu X.   +9 more
europepmc   +1 more source

[Early effectiveness of navigation-free robot-assisted total knee arthroplasty in treating knee osteoarthritis with extra-articular deformities]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Meng C, Xu Y, Shi R, Pu L, Ji J, Yao X, Zhou X, Li C.   +7 more
europepmc   +1 more source

[Analysis of effectiveness of Holosight robot navigation-assisted percutaneous cannulated screw fixation in treatment of femoral neck fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Xu W, Ding Z, Liu H, Zhang J, Xiong Y, Wu J.   +5 more
europepmc   +1 more source