Published April 2013

Development of technological method to combat complications associated with caving while drilling

V.N. Samedov

A.M. Mammadtaghizadeh

E.E. Shmoncheva

E.F. Babayev

Y.I. Safarov

In oil and gas wells drilling has not yet found a solution in the fight against complications associated with caving in the wellbore, which requires the development of appropriate technological measures. To effectively clean the wellbore prior to running casing strings in the article the way to clean the cavity of the sludge using a pressure pulse controlled with the wellhead is suggested. It should be noted that, to achieve this goal down into the well drilling tool of large diameter, positioned above the bit and under the influence of the mechanical way to create a pressure pulse, which allows you to clean the cavity from accumulating in drilling mud. The pulse pressure is controlled at the wellhead with a manometer.