According to the change of area after the exploitation in typical blocks,the influence of wells per square kilometer on the determination of oil-bearing area is analyzed.

Monte Carlo numerical simulation of response characteristics of compensated density logging in cased hole;

A theoretical study on detecting depth and spacing of density logging;

The LWD density logging was influenced by several factors such as bore size,stand off between logging tool and borehole wall,mud density,mud cake,cuttings,water cushion and mud invasion.

A new method of calculating rational well spacing density in late stage of high water cut;

Analysis on Reasonable Economic Well Spacing Density of Wangchang Oilfield;

Preliminary study of well spacing density for Yuedong heavy oil reservoir;

. Coinputation of economical well density using a trial method;

Based on net present value principle with geological and economic parameters affecting limit well density, a calculation method of economy limit well density was introduced in the paper.

Determination of economic limit for well pattern density of oilfield;

By means of the analysis for the fluid and development characteristics of low permeability oil reservoirs,we have found out the major problems existing as the low well pattern density,less precise development sequence classification,less injection-to-production-well ratio.

Reasonable well pattern density is pivotal decision-making parameter at oilfield development first stage.