Well Logging
NURSYAHIRA ABD HAMID
ASSIGNMENT 1
Explain the concept and purpose of the geochemical, gravity, electromagnetic and magnetic surveys.
1. Concept and purpose of geochemistry
Petroleum geochemistry has played an important role in many areas of exploration and production for fossil fuels. Many of the more recent developments can be seen to have developed in parallel with developments in analytical chemistry such as gas chromatography and gas chromatography−mass spectrometry. For the past two decades such analytical techniques have been used to search for trace amounts of compounds known as biomarkers present in oils and source rock extracts which can be used to provide valuable information on the origin and history of the oil. In the past two or three years much more effort has been placed on the development and utilization of such techniques as an aid to solving reservoir and production problems. There are developments in reservoir geochemistry such as the use of high-resolution gas chromatography for reservoir continuity studies and high-temperature gas chromatography for characterization of wax deposits. The developments in biomarker geochemistry will be provided in the section on exploration geochemistry along with a use of various pyrolysis techniques for the purposes of artificial maturation or characterization of the insoluble organic matter in source rocks or asphaltenes in oils. We also could picture on the origin of fossil fuels than could ever have been imagined a mere two decades ago.
2. Concept and purpose of gravity Gravity is the weakest of the four fundamental forces, yet it is the dominant force in the universe for shaping the large scale structure of galaxies, stars, etc. The gravitational force between two masses m1 and m2 is given by the relationship:
Newton's Law of Universal Gravitation r - the distance separating the centers of mass of the objects F - the force of gravity (in units
ASSIGNMENT 1
Explain the concept and purpose of the geochemical, gravity, electromagnetic and magnetic surveys.
1. Concept and purpose of geochemistry
Petroleum geochemistry has played an important role in many areas of exploration and production for fossil fuels. Many of the more recent developments can be seen to have developed in parallel with developments in analytical chemistry such as gas chromatography and gas chromatography−mass spectrometry. For the past two decades such analytical techniques have been used to search for trace amounts of compounds known as biomarkers present in oils and source rock extracts which can be used to provide valuable information on the origin and history of the oil. In the past two or three years much more effort has been placed on the development and utilization of such techniques as an aid to solving reservoir and production problems. There are developments in reservoir geochemistry such as the use of high-resolution gas chromatography for reservoir continuity studies and high-temperature gas chromatography for characterization of wax deposits. The developments in biomarker geochemistry will be provided in the section on exploration geochemistry along with a use of various pyrolysis techniques for the purposes of artificial maturation or characterization of the insoluble organic matter in source rocks or asphaltenes in oils. We also could picture on the origin of fossil fuels than could ever have been imagined a mere two decades ago.
2. Concept and purpose of gravity Gravity is the weakest of the four fundamental forces, yet it is the dominant force in the universe for shaping the large scale structure of galaxies, stars, etc. The gravitational force between two masses m1 and m2 is given by the relationship:
Newton's Law of Universal Gravitation r - the distance separating the centers of mass of the objects F - the force of gravity (in units