outer core barrelouter propelleroutflowoutflow rateoutpost extensine welloutside pipe cutterover flow weiroverburden loadoverfaultoverflow pipeoverlap faultoverlying layerovershotovershot guideovershot guide shoeoverthrustoverthrust beltoverthrust foldoverthrust nappeovertongingp d pressure differencepacked columnpackerpalaeocenepalaeozoicpaperparaffinparaffin depositparaffin go devilparaffin hydrocarbonparaffin knifeparaffin scraperparaffin seriesparaffin trouleparaffin waxparaffini base crudeparaflowparaformpartially penetratingparticle shapeparting line of the waterpassive gamma ray methodpassive positioningpay horizonpay linepay zonepeak productionpedometerpendulumpendulum inclinometer
