An offshore platform is a structure that is installed over as group of wells that was drilled by an offshore drilling rig. The function of the platform is to produce the oil from these wells. A platform can be mounted to the seabed or could be a floating type platform. Offshore drilling rigs are for drilling the wells and are mobile and moved from area to area.
Onshore drilling rigs are mobile units too and are moved from pad to pad for drilling and exploration. After a well is drilled onshore, a wellhead is installed on the well. There is no need for a platform as this only economically viable in offshore applications.
There have been cases where an offshore well was drilled from land into the sea, but operated from land. This can only be possible if the oil formation is not too far offshore.
I assume you mean "difference" and not "deference". Onshore means on dry land. Offshore means out in the water. Offshore drilling is out in the water, like in the Gulf of Mexico. Onshore drilling means on land, like in Wyoming and Texas.
onshore is oil well drilled on land. offshore is oil well drilled in sea/ocean.
Petroleum exploration is where a rig or ship is used to drill into the earth or seabed to locate oil reserves. For offshore exploration a drill ship, jack-up drilling rig or floating drilling rig can be used. For onshore applications mobile drilling rig is used.
Onshore oil is a nickname for oil that is obtained through oil drilling that is completely on land, as opposed to offshore oil, which is collected from drilling under the seafloor with floating oil rigs.
Offshore oil drilling refers to the extraction of oil from beneath the seabed in oceans, seas, or other large bodies of water. You can check out mineralview (dot) com blogs for more information.
onshore means it is on land and offshore on sea.
There are basically 2 types of rigs. 1) Drilling Rig The function of this rig is drilling a well down to the production zone then installs a casing in it. There are various types for offshore drilling and there are types for onshore drilling. 2) Production Platform (Offshore) The function of this rig is for producing oil. It consists of not only a single well like on an onshore pad, but I have seen platforms with 20 to 50 wells. They are not drilled straight down like most onshore wells, but they are deviated and get drilled in and arc, away from the platform and ends up being somewhat horizontal. Wells can be anything from 1000+ and up to a few thousand feet deep. A work-over rig on the platform uses equipment to perforate the casing at the desired production zone and a screen is installed to minimize sand flowing into the well. Pumps are installed into wells to produce the oil. Depending on how far the platform is located from land, a pipe line can tranport the oil to land or in most cases where platforms are to far offshore, the surrounding platforms pump the oil to a FPSO which is basically a huge oil tanker that transfers oil to oil tanker ships. Onshore operations are different. A well is drilled and a wellhead is installed. Piping from the wellhead leads to a manifold which is connected to the surrounding wells. From there oil gets pumped to gathering stations then to refineries.
Assab is an onshore oil field
No, any production of gas and oil, whether offshore or onshore, increases the effects of global warming. Burning fossil fuels (coal, oil and natural gas) releases carbon dioxide, one of the greenhouse gases responsible.
Offshore winds will blow the unwary captain onto shoals or reefs. Onshore winds will blow the unwary captain away from his next landmark or landfall.
Both of them are outsourcing services that deal with software development. The difference between them is that when you say "offshore", it means overseas. So if you avail of offshore software outsourcing, you are outsourcing software development to a different country. When you say onshore software outsourcing, it is still outsourcing but the company you outsourced the software development is within your country.
Onshore/offshore dichotomy is way of allocating the revenue accrued from exploitation and exploration of crude oil. Such revenue is divided into onshore revenue (revenue accrued from oil drilled onshore (on land) and offshore revenue (accrued from oil drilled from littoral zone).The dichotomy implies the revenue from offshore crude belong to a sovereign nation and not to the coastal communities, and thus must be shared among the states that make up the nation, while onshore revenue belongs to the coastal communities (termed oil producing communities) on which land the crude is drilled.