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(1) Cleaning up and abandoning an inoperative well site in compliance with the applicable regulations and to the satisfaction of the concerned governmental body. (2) To cease production from the said well or field. (3) Proper plugging of the well and salvaging the equipment and material.
(1) The process aimed at reducing pollution levels or intensity. (2) Using some abatement method to reduce pollution.
The primary trade association that represents the energy industry in the USA (oil and natural gas).
The space between any 2 concentric objects of the borehole like (1) casing and wall (2) Casing and tubing (3) Two casing strings.
A well drilled during the appraisal drilling program conducted to assess the rate of production for a specific field and its reserves.
A standard unit of measurement for the volume of petroleum and related products (1 ton= 7.3 barrels).
One barrel volume of oil (1 barrel = 159 liters (approx.); 6.29 barrels = 1 cubic meter).
0.83 million tons of oil is equivalent to 1 Billion cubic feet
Volume measured in billion cubic meters (1 cubic meter is equivalent to 35.31 cubic feet).
An acreage sub-division is a part of a quadrant, which is approximately equal to 10 x 20 kms.
Condensate is produced along with gas at the same time during the start of production.
Oil and gas blow-out occurs when the well pressure is more than the controlling capacity of the wellhead valves.
High-pressure wellhead valves with increased capacity to control and shut off the excessive flow of hydrocarbons.
The hole of the borewell drilled by the bit.
Head of a casing.
Comparing the measurement values of a particular equipment undergoing testing, with known accuracy standards.
Cemented pipe fixed in the well used to seal off unwanted fluids from forming and to prevent caving in of the hole.
The lining of the drilled well which is formed from screwing the sections of steel tube together.
Devices used to record electrical and mechanical inputs and display on a piece of paper.
Estimates made by exploring various drilling scenarios combined with experience in recent past.Christmas tree
Fittings and valves assembled on top of the casing used to control the rate of oil production.
Oil or gas field worthy and capable enough to produce the desired net income.
Installing the wellhead equipment on a permanent basis, in order to produce oil and gas.
Higher hydrocarbons and pentanes that turn from gaseous state to liquid form, with changes in temperature or pressure, under the reservoir conditions.
The process of using a “core barrel”, a specialized tool for collecting rock samples from the field or well.
A large barge(“derrick barge”) used to lift heavy equipment to offshore platforms.
Crude form of liquid petroleum extracted from the ground as opposed to manufactured refined oils.
A standard unit of measurement for gas; 1 cubic foot is equivalent to 0.0283 cubic meters.
Rock chips cut by drilling, which reach the surface. Geologists use these to gather data.
The towering structure that contains all the drilling controls.
The process of drilling production wells.
The process of boring a hole (2)Equipment that is used for boring holes.
The process of drilling to production testing, capping to plugging back, sidetracking or reconditioning a well. Converting a well into a source or producing well using stratigraphic and environmental tests.
Temporary drilling unit fixed to the jack-up unit, including the derrick.
Natural gas, especially methane and fewer amounts of higher hydrocarbons.
A non-productive well.
The oil recovery process, excluding the usage of natural pressure in the reservoir.
Drilling process that determines the presence of hydrocarbons in a particular field.
Operational phase to uncover oil or gas using geophysical, geological surveys and exploratory drilling.
A “wildcat well” drilled in an unproven area.
Another company taking over the production and financial commitment of the drilling process and the well.
An area where the reservoir lies.
Extracting objects and material like tools or broken drill strings from the borehole.
An instrument that measures force using pull or push test.
The pressure built in the well at its bottom, when its wellhead is shut.
Saltwater formed with gas and oil.
In order to increase the production rate of a reservoir, the formation is broken down using the fluid pumped at very high pressures.
Gas Condensate.
A field containing only natural gas, and not oil.
The process in which separated associated gas is injected into a reservoir to maintain its pressure.
The ratio of the volume of gas(at atmospheric pressure) produced to the oil produced.
Computer systems used to assemble, store and manipulate geographic information.
Tests used to detect strength and leaks of pressure vessels like boilers and pipelines.
A compound of hydrogen and carbon elements in gaseous, solid or liquid state- term used to reference oil, gas or condensate.
A well that pumps gas or water into a reservoir.
The lower section of offshore platforms.
A well in which the formation pressure is more than the pressure of the mud column.
A barge with special equipment for laying submarine pipelines.
Natural gas, mainly methane, or oil in liquefied form, which is easy to transport.
Light hydrocarbons converted to a liquid state by changing the pressure- for storage, transport or handling purposes. Commercial liquefied gas contains propane or butane, or both.
Million Barrels Oil Equivalent.
Setting a packer bridge plug, which is retrievable over the perforations of a wellbore and then applying pressure on the annulus.
1 metric ton= 7.5 barrels or 1000 kilos, equivalent to 2204.61 lbs.
Millions of cubic feet in a day (of gas).
Drillship aperture facilitating the drilling or diving operations.
Base substance mixed with additives that lubricate the drill bit and counteract natural pressure formation.
Naturally found gas along with crude petroleum.
Liquid hydrocarbons found along with natural gas.
Natural Gas Policy Act of 1978.
Oil and Gas.
Various liquid hydrocarbons with different molecular weights and their mixture
The geographic area over the oil reservoir.
The total estimated amount of oil in the reservoir which is a higher figure than estimated recoverable reserves.
The company with the legal authority over the entire process of drilling wells- acts on behalf of the consortium to which it belongs.
Rock in which there are exploitable quantities of oil and gas.
The property of the formation which allows the fluid to flow through its pore spaces and enter the wellbore.
Hydrocarbons, natural gas, crude oil, natural gas liquids and their products.
A permanent offshore structure fixed to the seabed.
Comparative percentage ratio of the void in a porous rock in its solid formation.
Those reserves whose probability is less than 50%, but still have the possibility of being producible.
Is pressure applied by gas or fluid on unit surface area.
The value used to control the pressure build up that can damage the equipment.
Recovering the oil or gas from the reservoir by using nothing more than the built natural pressure to force it out.
Those reserves with more than 50% probability of being producible.
Oil and/or gas fields whose reserves and physical extent are already determined.
Reserves which are virtually proved to have more than 90% probability of being producible.
Reserves aThat proportion of total reserves in a reservoir of oil and/gas that can be extracted using current techniques. 90% probability of being producible.
To abandon a well then enter the same again.
The underground formation with porous rock, where there is an accumulation of oil and gas. Caprock prevents them from escaping.
A drilling pipe fixed between seabed BOP and floating rig.
Pipework section joining the seabed wellhead and the Christmas tree.
Drill crew members who screw the drill pipe sections together, working on the aderrick floor.
Drill crew members assisting in general operations and load and unload the equipment around the rig.
Owner of the mineral rights receives cash, called royalty.
The process of obtaining oil or gas by injecting gas or water, and artificially enhancing the reservoir pressure in the reservoir rock.
A producible well which is not currently producing owing to lack of equipment or other reasons.
A hiatus where production ceases, but necessary maintenance work is done.
Shut In /Temporarily Abandoned
Drilling a wellbore segment from the existing wellbore intersection to the bottom hole or target of this new wellbore.
The drilling process involving the first part in a new well.
The location of the measurement point or a well.
Temporarily capped off well.
Trillion Cubic Feet (of gas).
Isolating completed intervals of a wellbore using a cement retainer, a cast iron bridge plug or other methods.
Second highest in the hierarchy of the drilling crew, next to the drilling superintendent, who ensures the availability of the necessary equipment on daily basis.
The superstructure of the platform.
Device to test quality control of the tools in use.
A tool used to fasten nuts and bolts, in order to apply specific torque.
A program to regulate Injection Wells that adversely affect the quality of an underground drinking water source. The applicant seeking the permit has to demonstrate that it complies with the Safe Drinking Water Act (SDWA) Act.
A record of the geological formation undergoing the operation- all the details of drilling, including technical aspect are recorder in the log.
An “exploration well” being drilled in an undetermined reserve or unproven area.
Remedial work was done to the equipment used within the well in order to increase the flow rate.
