- Settore: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
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An algorithm for correcting the effects of dip or borehole deviation on the response of a logging measurement. These effects are significant for deep-reading logs such as induction and electrode devices. The standard processing used to produce these logs assumes a vertical well with horizontal formation layers. In the presence of a relative dip between the borehole and formation layers, the logs may read incorrectly. For older logs such as the dual induction, a set of inverse filters can be designed to correct for dip effect up to about 60. For modern array logs, iterative forward modeling with a one-dimensional layered earth model can correct up to about 85.
Industry:Oil & gas
An analysis related to a process involving a randomly determined sequence of observations, each of which is considered as a sample of one element from a probability distribution.
Industry:Oil & gas
An analysis parameter used in hydraulic fracture design to indicate the pressure at which the fracture effectively closes without proppant in place.
Industry:Oil & gas
An analysis of data obtained from measurements of the bottomhole pressure in a well that is shut-in after a flow period. The profile created on a plot of pressure against time is used with mathematical reservoir models to assess the extent and characteristics of the reservoir and the near-wellbore area.
Industry:Oil & gas
An algorithm built on a Markov-type hypothesis, whereby collocated secondary information is assumed to screen out secondary data from farther away. The method allows the direct cosimulation of several interdependent variables, integrating several different sources of 鈥渟oft鈥?information. <br><br>Reference:<br>Almeida AS and Frykman P: "Geostatistical Modeling of Chalk Reservoir Properties in the Dan Field, Danish North Sea," in Yarus JM and Chambers RL (eds): 鈥淪tochastic Modeling and Geostatistics,鈥?AAPG Computer Applications in Geology, no. 3. AAPG, Tulsa, Oklahoma, USA, 1994.
Industry:Oil & gas
An agreement between two or more parties to review technical data prior to deciding whether to bid on a concession. The agreement also specifies the interests and the procedure for bidding between the parties in the event that the parties decide to bid on the concession.
Industry:Oil & gas
An agreement by which a party sells production on behalf of a producing company and then remits the proceeds, minus agreed-upon costs and expenses, to the producing company.
Industry:Oil & gas
An agreement between the parties to a well and a host country regarding the percentage of production each party will receive after the participating parties have recovered a specified amount of costs and expenses.
Industry:Oil & gas
An agreement between the parties to a well or wells and a host country to utilize specified goods and services from that country.
Industry:Oil & gas
An agreement between parties who own a working interest in a well that sets out responsibilities and duties of the operator and nonoperators, including drilling the test well and subsequent wells, and sharing of expenses and accounting methods.
Industry:Oil & gas
