Crossword

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Across

3. Petroleum found in rock underground.

4. Small quantity of rock removed, often by coring, for analysis.

7. Hole drilled underground for oil exploration and operation.

9. A scientist who studies earth’s physical activities.

10. A geographical area in which one or more oil or gas wells produce.

11. Chemical compound formed only of carbon and hydrogen.

15. Lowering electrical and gas sensors into the hole to take measurements of the rock formations there

17. The hydrocarbons are contained in a reservoir rock.

19. A layer of matter, often deep under the earth, that has formed naturally.

22. The standard unit of measure of liquids in the petroleum industry; it contains 42 U.S. standard gallons.

23. Reserves that can be estimated with reasonable certainty to be recovered under current economic conditions.

24. Sh – hydrocarbon ... - some of the pore space is filled with water

Down

1. Ratio of the volume of interstices of a material to the volume of its mass. In oil fields, the oil and gas are contained in pores in the rock.

2. A place where oil flows slowly and in small quantities through ground.

5. Device that can measure the small differences in the Earth's magnetic field.

6. Science that refers to the study of how energy, in the form of seismic waves, moves through the Earth's crust and interacts differently with various types of underground formations.

8. Petroleum companies can’t start drilling without the exploration … .

10. An enclosed space or room for heating.

12. Oil and gas are extracted from the trap by…

13. The process of searching for minerals preliminary to development.

14. Used for transporting oil.

16. Science that involves the study of the earth and the earth's origin, composition, structure and history.

18. Volume of oil trapped in a rock.

20. At sea, not far from the land.

21. Underground area in which geologists think there is a chance of finding oil.

22. A depression of the earth's surface into which sediments are deposited, usually characterized by sediment accumulation over a long interval.