Geothermal exploration has been highly successful to date in locating targets for drilling. However, the requirements for an economically successful geothermal well are both high flow rat,e and high temperature. Most geophysical and geochemical exploration methods have not been highly accurate in predicting the depth and actual temperature of a reservoir, nor have they been able to locate high ...

Analysis of the drilling fluid temperature due to heat transfer of drilling fluid with the formation in under-balanced drilling operation is the main objective of this study. Gas-liquid two-phase flow model considering thermal interaction with the formation is used to numerically simulate a well with real dimensions. In the present study, the continuity, momentum, and energy equations are devel...

The problem of development gas hydrate deposits is complicated by a range problems connected with the adaptation traditional methods and procedures to develop mentioned type raw materials. Construction directed well deserve high attention since they are most efficient solution provide stable process fraction production. Experts Dnipro University Technology at top among studies engaged in implem...

The article deals with the selection of fluid solutions used in drilling oil and gas wells. As it is known, increase depth, liquid expands its density decreases. When determining hydrostatic pressure a fluid, recommended to take into account change temperature depending on depth well. To do this, important accurately determine law quality well depends basic physical properties. Thus, reservoir ...

Directional drilling techniques, based on rotary steerable systems, are used to generate complex curved boreholes. In practice, however, boreholes drilled with such systems often show instability-induced borehole spiraling, which negatively affects the borehole quality and increases drag losses while drilling. As a basis for controller synthesis, we present a directional drilling model in terms...

Directional drilling has evolved over the last few decades to become standard operational practice in the oil and gas exploration industry. One method of steering utilizes a technique known as magnetic Measurement While Drilling (MWD). Vector measurements of geomagnetic fields along a well-bore are used to determine it orientation. This method is advantageous in that it is inexpensive and effic...