A theoretical plate of reasonable ratio of space between wells and rows in different well patterns were studied, and different anisotropy degree formations of low permeability reservoirs we.

This article provides the principles and methods, of well pattern optimization, lists examples to calculate well spacing, on the basis of Shanxi Block, gives optimization design to guide CBM development.

To improve conventional sand body model which utilized insufficiently data,had lower precision and required farther checking,a new method integrating various data based on different well spacing was proposed.

Determination of rational injection-production well spacing is significant for economic and effective exploitation of low permeability oilfield or reservoir due to existence of starting pressure gradient and recovery difficulty.

The design formula for well space of vectorial well pattern for the reservoirs with plane he.

The result shows that it is feasible to take slang line, five spot and four spot patterns with an injection production well space of 200m in the ASP flooding of the major reservoirs in Daqing Oil Field.

Based on experience, well pattern and well space were determined by referring the method of determining well pattern and well space in polymer flooding.