金剛(gang)石(shi)鉆(zhan)(zhan)(zhan)頭(tou)的特(te)點1、鉆(zhan)(zhan)(zhan)探本錢比(bi)較低,因此(ci)得到越(yue)來越(yue)廣泛的應(ying)用。2、施工(gong)勞動強度(du)比(bi)較輕。3、鉆(zhan)(zhan)(zhan)孔(kong)質量好。4、鉆(zhan)(zhan)(zhan)頭(tou)效率高。5、主要用于鉆(zhan)(zhan)(zhan)頭(tou)硬巖和(he)堅(jian)硬巖石(shi),也可鉆(zhan)(zhan)(zhan)頭(tou)軟—中硬巖石(shi)。
六、金(jin)剛石鉆(zhan)(zhan)(zhan)頭正常鉆(zhan)(zhan)(zhan)進1、在遇(yu)到研磨性強或(huo)硬(ying)砂泥巖時,降低(di)鉆(zhan)(zhan)(zhan)速(su)以延(yan)長金(jin)剛石鉆(zhan)(zhan)(zhan)頭壽命。2、遇(yu)到地層(ceng)變化或(huo)夾(jia)層(ceng)時調整鉆(zhan)(zhan)(zhan)速(su)和金(jin)剛石鉆(zhan)(zhan)(zhan)頭以保持較佳的(de)鉆(zhan)(zhan)(zhan)井效能(neng)。3、每次接單根注意以下幾點:3.1、恢復泵沖(chong)數并檢查立管壓力。3.2、在金(jin)剛石鉆(zhan)(zhan)(zhan)頭接觸井底前開泵,以50~60rpm的(de)鉆(zhan)(zhan)(zhan)速(su)緩慢下放金(jin)剛石鉆(zhan)(zhan)(zhan)頭至(zhi)(zhi)井底。3.3、緩慢恢復加壓至(zhi)(zhi)原金(jin)剛石鉆(zhan)(zhan)(zhan)頭,然(ran)后增加鉆(zhan)(zhan)(zhan)速(su)至(zhi)(zhi)原鉆(zhan)(zhan)(zhan)速(su)。
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