比重の小さい掘削流体によるボーリングスライムの排出について : 機構と適用事例

概要

論文の詳細を見る
For a long time, the bentonitic drilling mudor the mud based on bentonite and other substances has been used widely. These types of mud have such characteristics as high specific gravity and high viscosity. Bentonite, the main component of the ordinary type of mud, is heavy, so it is hard to transport or to use in the field. A new type of drilling fluid powder have been developed to solve these problems. It is made of polymer which expands enormously when it absorbs water. The powder and water are required to make drilling fluid. Its concentration is about 0.3-0.6% in weight. The specific gravity of this drilling fluid is close to that of water. But the ability of this new type of drilling fluid is as same as that of ordinary drilling mud. Moreover, this new type of drilling fluid has some superior characteristics. The mechanism of lifting drill cuttings with this new type of drilling fluid and some examples of its application are presented in this paper.
一般社団法人日本応用地質学会の論文
1992-04-10