Southwest Petroleum University

Chevron U.s.a. Inc.

Tong Xu

Yi Zhou

Xia Wang

Yi Tang

Yueming Zheng

Yuxing Huang

Yang Xiao

Bin Tan

Yue Wang

Yonghe J Sun

Leonard Lin Zhang

Song Peng

A vertical high-speed testing device for a spiral seal of a cone bit bearing is provided. The device includes an upper fixed plate, a liquid cylinder, a cone, a spiral sleeve, a shaft and a lower fixed plate. The spiral sleeve is in threaded connection to the cone. Both the cone and the spiral sleeve are sheathed on the shaft. Sealing threads are provided on an inner surface of the spiral sleeve, and there is a clearance between the sealing threads and the shaft. By the testing device, a spiral seal structure for a cone bit bearing is simulated, and the cone drives the spiral sleeve to rotate; and the sand draining performance of the spiral seal is tested by measuring the time required to drain sand-containing medium.

Vertical high speed testing device for spiral seal of cone bit bearing

A horizontal high-speed testing device for a spiral seal of a cone bit bearing is provided. The device comprises a shaft, a spiral sleeve and a cone. The spiral sleeve is in threaded connection to the cone. Sealing threads are provided on an inner diameter of the spiral sleeve. Both the spiral sleeve and the cone are sheathed on the shaft. By the testing device of the present invention, a spiral seal structure for a cone bit bearing is simulated, and the cone drives the spiral sleeve to rotate; the sand draining performance of the spiral seal can be tested in two ways, i.e., by measuring the time required to drain the sand-containing liquid and by measuring the weight of drained sand, so that the smooth production and application of spiral seal products can be assured.

Horizontal high speed testing device for spiral seal of horizontal cone bit bearing

A method for determining values of anisotropic model parameters of a Tilted Transversely Isotropic (TTI) Earth model, the method including obtaining an initial TTI earth model that substantially flattens common-imaging-point gathers and substantially ties seismic data to well data; inputting checkshot data and/or VSP data to determine updated values of Vpnear the well locations; determining an incremental improvement &#x394;&#x3b4;; extrapolating the relative change &#x394;&#x3b4; from near-well locations to the entire three dimensional TTI earth model; determining updated values of Vp=Vp(1&#x2212;&#x394;&#x3b4;); inputting near-to-mid-offset/angle and mid-to-far-offset/angle residual moveout information; and providing updated values of &#x3b4; and &#x3b7;.

Multiple anisotropic parameter inversion for a TTI earth model using well data

Growing community of inventors

Sichuan, China

Tong Xu