The Open Petroleum Engineering Journal

2014, 7 : 113-118
Published online 2014 December 31. DOI: 10.2174/1874834101407010113
Publisher ID: TOPEJ-7-113

Productivity Model of Multi-Layer Reservoir with Blocks

Pang Jin , Lei Guanglun , Liu Hong , Zhang Yalong and Yue Yixing
Department of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing, 401331, P.R. China.

ABSTRACT

Based on the assumption of multi-layer reservoir with complex blocks and combined with the wellbore flow equations, we established a percolation mathematical model for the coupled multi-layer reservoir with blocks and wellbore, and then we utilized the Laplace change, Stehfest inversion and conjugate gradient method, etc. to solve the model. Then, we took the multi-layer reservoir with complex blocks as an example to simplify the shape of the reservoir and calculate the distribution of pressure and production of the horizontal well when it passes through two sand bodies. Finally, we calculated the dimensionless pressure derivative and productivity of four different types of oil wells (or have different relative positions). This model has provided a theoretical basis to select the reasonable well types for the multi-layer reservoir with complex blocks.

Keywords:

Fault block, horizontal well, mathematical model, multi-layer, productivity, well type..