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well productivity indices and formation permeability on the basis
of the well surveys.
6. Recording curves of bottom-hole pressure restoration
in shutting wells and processing of the curves to calculate the
piezoconductivity and permeability factors, and the reduced radius
of the well.
7. Surveys of the well interaction to establish the degree
of communication between different formation strata or the
pinching out of individual layers from one another. The qualitative
characteristic of the communications within the formation and also
the piezoconductivity factors are determined on the basis of the
nature of the interaction.
8. Observations of sand carry-over during operation of
the well under various conditions and determination of maximum
permissible withdrawals.
9. Analysis of the salt composition of the waters and the
water pressure head in the reservoir.
From this list of the essential surveys, it will be seen that
most of them are interrelated. In order to carry out these surveys
by means of exploratory wells within a short period of time, it is
necessary to prepare a plan with a detailed timetable.
When initial geological and physical data obtained from
drilling logs and sampling and surveys are available, it is possible
to perform the required hydrodynamic calculations and thus
establish the technical characteristics of the development plan.

§2 INDICATORS OF DEVELOPMENT

2.1 Indicators of oil field development

To characterize the process of extracting oil from the
depths using indicators that determine the time intensity, the

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