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— The hydrocarbon formation mechanism and potential targets in clastic strata from the Tabei Uplift, Tarim Basin, are documented using the fault mesh petroleum plays theory, based on integrating seismic, well log, well core, and geochemical data. The reservoirs in the Donghetang area are typical allochthonous and far-source fault mesh petroleum plays. There are two sets of fault meshes in the study area: (1) the combination of the Donghe sandstone and Permian–Triassic strata and (2) the combination of the fourth and third formations in the Jurassic strata. The fault mesh petroleum play in the Jurassic is a secondary reservoir that originates from the Carboniferous Donghe sandstone reservoir adjustment based on source correlation. The fault mesh carrier systems show the fully connected, fault–unconformity–transient storage relay, fault–transient storage–unconformity relay, and transient storage–fault relay styles, according to the architecture of the fault mesh. Based on the characteristics of the fault mesh petroleum plays, the reservoirs are divided into three categories (upper-, inner-, and margin-transient storage styles) and 15 styles. Integrated analysis of the hydrocarbon generation and faulting time periods reveals that there were four periods of hydrocarbon charging, with the first three stages charging the reservoirs with oil and the last stage charging the reservoirs with gas. There are multiple stages of reservoir accumulation and adjustment in the fault mesh in the study area. These stages of fault mesh accumulation and adjustment are the main reason why the reservoir distribution multiple vertical units have different hydrocarbon properties. Fault-block and lithologic reservoirs related to the inner- and upper-transient storage styles are the main exploration targets in the clastic strata in the study area.

Based on multibody dynamics, some definitions of mechanism are defined. The kinematics bifurcation position is a cold researching spot for many many years. It is common in planar quabody mechanisms but has not been paid enough attention to. The kinematics bifurcation position refers to the mechanism position with a pressure angle of 90° of the follower, including the stuck position (dead point). In this paper, a planar quabody mechanism is studied. In a motion cycle, there are three kinematics bifurcation positions in the mechanism. The third derivative of angle to time, angular velocity, angular acceleration of the connecting rod in kinematics bifurcation positions is obtained by solving the kinematics parameters of kinematics bifurcation positions according to L’Hopital’s rule. If the driving body swings in sinusoidal law, the motion of the mechanism is continuous. The kinematics characteristics of the mechanism are independent of the simulation convergence and response bifurcation of nonlinear dynamics. The length of the rocker is 1 m, the length of the connecting rod is 0.5 m, the distance between the track of the slider and the fixed point of the rocker is 0.5 m, and the rocker swings according to the sine law with a period of 9 seconds. The computer simulation shows that the speed and acceleration are continuous and so there is no impact in the kinematics bifurcation positions.

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