Schlumberger Technology Corporation

Tsinghua University

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Ping Xu

Wei Zhang

Jie Cui

Yue Zhao

Lina Xu

Jun Fu

Zhi-hong Liu

Yu-dong Wang

Gao-qing Li

Qingrui Li

Zheng-li Wu

Paolo Saverio Damiani

Zhenhua Li

Guang Xiong

A method includes receiving information that defines a three-dimensional subterranean structure; splitting the three-dimensional subterranean structure into portions; generating convex hulls for the portions; and generating a discrete fracture network based at least in part on the convex hulls.

Geologic feature splitting

The present invention discloses a bipolar transistor with an embedded epitaxial external base region, which is designed to solve the problem of the TED effect with the prior art structures. The bipolar transistor with an embedded epitaxial external base region of the present invention comprises at least a collector region, a base region and an external base region on the collector region, an emitter on the base region, and sidewalls at both sides of the emitter. The external base region is grown through an in-situ doping selective epitaxy process and is embedded in the collector region. A portion of the external base region is located beneath the sidewalls. The present invention discloses a method of forming a bipolar transistor with an embedded epitaxial external base region. The bipolar transistor with an embedded epitaxial external base region of the present invention avoids the TED effect and reduces the resistance of the external base region of the device so that the performance of the device is improved. The method of forming a bipolar transistor with an embedded epitaxial external base region of the present invention achieves the aforesaid bipolar transistor with an embedded epitaxial external base region, and features concise steps, a low cost and simple operations, and the structure obtained has good performance.

Bipolar transistor with embedded epitaxial external base region and method of forming the same

Growing community of inventors

Beijing, China

Ping Xu