دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The physicist A. E. Boycott found that the blood cell deposits faster when test tube deflects, especially 40°-50°, than when test tube is vertical. The same situation will be found in the drilling fluid in the horizontal well. That is why people call this

the point in the well or the weight applied where the pipe buckles (sinusoidal bending) and stops or significantly slows during pipe running in a horizontal well.

the top of the water cone in (usually) a horizontal well. Compare with coning in a vertical well.

n: The cuttings will deposit at deviated hole section, especially at 45° to 55° when drilling horizontal well if we dont take some special steps of drill fluid. It is hard to be cleaned.

n: A main component of flowloop simulator of drilling and completion. Used to investigate settling, friction and other problems in high angle deviated hole and horizontal well.

the distance between the wellhead and the top of a vertical line from the bottom hole location to the wellhead elevation at the surface.

n: Small-diameter horizontal wells drilled into a formation from a vertical borehole or shaft.

end of build (horizontal wellbore).

a upward turning horizontal well – usually over 90o.

n: deviation of the borehole at least 80. from vertical so that the borehole penetrates a productive formation in a manner parallel to the formation. A single horizontal hole can effectively drain a reservoir and eliminate the need for several vertical boreholes.

n: drilling when the departure of the wellbore from vertical exceeds about 80 degrees. Beause a horizontal well typically penetrates a greater length of the reservoir, it can offer significant improvement over a vertical well.

a well drilled in a manner to reach an angle of 90 degrees relative to a level plane at its departure point at the surface. In practice, the horizontal section of most horizontal wells vary several degrees.