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гравіметричної зйомки
gauss – гаус – одиниця виміру земного tesla – тесла – одиниця виміру магнітної
магнетизму індукції
emit an impulse – випускати імпульс angle of incidence – кут падіння
ratio - співвідношення to reduce noise – зменшити шум
seismic acquisition - сейсморозвідка shot point – сейсмічний пункт вибуху
explosives - вибухові речовини vibroseis – сейсмовібратор; вібросейс
shot hole – сейсмічна свердловина; вибухова Primacord – детонуючий шнур; детонатор
свердловина
plant in a trench – встановити (прокласти) у sleeve gun – шланговий детонатор
траншею
spec survey – технічні умови сейсморозвідки group shoot – групове виконання програми
сейсмічних робіт
survey log book – журнал, де записуються rugged terrain – пересічена місцевість
усе, що пов’язано із виконанням сейсмічних
робіт
water gun - гідрогармата sparker – спаркер; електроіскрове сейсмічне
джерело

Task 2. Read the following text, translate it into Ukrainian.

Petroleum Exploration—Geophysical Techniques
Geophysics is the application of physics and mathematics to the study of the earth.
Geophysicists, who are trained in mathematics and physics, commonly use three surface
methods—gravity, magnetic, and seismic—to explore the subsurface. At the present, seismic
exploration is where most of the exploration money is spent and most of the technological
advances are being made.

Text 1
Gravity and Magnetic Exploration
Gravity meters and magnetometers are relatively inexpensive, portable, and easy-to-use
instruments. A gravity meter or gravimeter measures the acceleration of the earth’s gravity at
that location. A magnetometer measures the strength of the earth’s magnetic field at that
location. Both are small enough to be transported in the back of a pickup truck. A magnetometer
can be mounted in a stinger on the back of an airplane to conduct an aeromagnetic survey that is
fast and efficient and does not need permission from the land owners. The magnetometer can
also operate while being towed behind a boat. The gravity meter does not work well in either an
airplane or the ocean because of vibrations.
The gravity meter is very sensitive to the density of the rocks in the subsurface. It
measures gravity in units of acceleration called milligals. A mass of relatively light rocks such as
a salt dome or porous reef can be detected by the gravity meter because of values over it that are
lower than normal gravity. A mass of relatively heavy rocks near the surface such as basement
rock in the core of a dome or anticline can be detected by higher-than-normal gravity values.
The magnetometer measures the earth’s magnetic field in units called gauss or
nanoteslas. It is very sensitive to rocks containing a very magnetic mineral called magnetite. If a
large mass of magnetite-bearing rock (e.g., basement rock) occurs near the surface, it is detected
by a larger magnetic force than the normal, regional value. The magnetometer is primarily used
to detect variations of basement rock depth and composition. It can be used to estimate the
thickness of sedimentary rocks filling a basin and to locate faults that displace basement rock.

Text 2
Seismic Exploration