发明名称 |
INSERT FOR CUTTING FACILITY |
摘要 |
FIELD: bore-hole drilling machinery and equipment. SUBSTANCE: this is intended for drilling deep bore-holes, primarily for oil and gas recovery. Cutting facility incorporates turbo-drill. Body of turbine section of turbo-drill is connected through adapter to lower pipe of drilling string. Attached to shaft of trubo-drill spindle by threading is diamond drilling bit. Body of turbo-drill turbine section and body of turbo-drill spindle are centered in bore-hole being drilled by means of centralizers. Lower nipple-type reamer-stabilizer is provided with external rock-crushing surface. Tangential line to longitudinal cross-section of rock-crushing surface is at any point located at angle of at least 45 deg. to turbo-drill axis. Outer diameter of diamond drilling bit is equal to or by 2-5 mm larger than diameter of rock-crushing surface of lower nipple-type reamer-stabilizer. Shaft of turbo-drill spindle is eccentrically displaced relative to axis of turbine section shaft. EFFECT: higher efficiency. 2 dwgd
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申请公布号 |
RU2110660(C1) |
申请公布日期 |
1998.05.10 |
申请号 |
RU19970112748 |
申请日期 |
1997.08.06 |
申请人 |
ZAKRYTOE AKTSIONERNOE OBSHCHESTVO INVESTITSIONNO-T;RASTOVAJA KOMPANIJA SPETSPROMS |
发明人 |
IONESJAN JU.R.;KUZIN B.V.;KUZIN V.B.;SERGEEV O.V.;IONESJAN JU.R.;KUZIN B.V.;KUZIN V.B.;SERGEEV O.V. |
分类号 |
E21B4/02;(IPC1-7):E21B4/02 |
主分类号 |
E21B4/02 |
代理机构 |
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