Nature Gamma Measure While Drilling

Nature Gamma Measure While Drilling

Nature Gamma Measure While Drilling:

Research radioactive element relative amount in rock, real time detect nature gamma ray total intensity to indentify different lithology,   for guide drilling job against geology parameter while drilling

Rock and minerals inordinately own some radioactive. It exists 65 kinds of radioactive elements in nature, mostly are rarely.   Rock radioactive characteristic almost resulted by Uranium / Thorium / Actinium and Isotope K40 exists and decay progress. In these radioactive element decay progress,   the redundant energy be radiated in high-energy electronic magnetic wave mode, it’s procedure of radiation gamma ray (or named photon).

Enter into reservior 11m @ angle 5°:

Near bit gamma: It has entered into reservior at VD of 0.96m.

Conventional gamma: It just enter into reservoir, gamma is reading.

If reservior thickness less than 0.96m, the bit has been out of it.

Azimuth Gamma:

Azimuth gamma surveys gamma from right above & under face of the hole, and transmits to ground;

Gamma data will be a slow change during approach to top/bottom boundary of hole;

Gamma data slow changes is out of sync, as a result of different direction of upside and downside gamma;

Locating the out-sync of upside & downside gamma data, it helps diagnose the tracking close top or bottom boundary situation.

Long life – High power downhole motor tech:

Excellent heat transfer property extends stator service life;

Even rubber expansion makes stator working more stable;

Each stage pressure-bearing higher, increase out-put power;

Increase bonding area between rubber and metal, enhance bond strength;

Lower sensitive to temp. & solvent, makes stable working longer;

Imported rubber: appropriate for oil based mud   / salt water based mud

and high temp. etc.

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