DEVICE FOR DRILLING Russian patent published in 1998 - IPC

Abstract RU 2120020 C1

FIELD: drilling units. SUBSTANCE: device has drilling unit submerged into drilled well. The latter has casing which accommodates at least during drilling a drilling set. Cutter head of drilling set has at least the first drilling means for drilling the center of well and the second drilling means for reaming the well center for sinking casing, and flushing means for removal of drillings from well. Rotary motion round longitudinal axis and percussive action in longitudinal direction from the first drilling means are transmitted with the help of joining device to the second drilling means connected with the first drilling means near the cutter head of drilling set. the second drilling means are made so that they are rotated together with casing head round central longitudinal axis with the help of joint and, in addition, they may be disconnected for retrieving the first drilling means from finished well. For optimization of at least sizes of the first drilling means, the effective diameter of the first drilling means amounts to at least 60% and in preferred version, more than 75% of casing inner diameter. EFFECT: reduced dimensions of device structure. 8 cl, 3 dwg

Similar patents RU2120020C1

Title Year Author Number
EVALUATION OF PARAMETRES OF PRODUCTIVE FORMATION DURING DRILLING PROCESS 2006
  • Vil'Jareal' Stiven Dzh.
  • Tsiglenek Rajnkhart
  • Staker Majkl Dzh.
  • Duong Kkhankh
RU2416720C2
WELL DRILLING METHOD 2003
  • Khed Filip
  • Luri Pol Dzhordzh
RU2320840C2
METHOD FOR DRILLING SEVERAL UNDERGROUND BORE-HOLES, TEMPLATE AND METHOD OF USING IT 1993
  • Kollinz Gari Zh.[Us]
  • Bauf Dzhon L.[Us]
  • Benker Vil'Gel'M E.[Us]
RU2107141C1
DEFLECTOR FOR FIXED DRILL OR MILLING BIT 2010
  • King William W.
  • Drews Steven W.
  • Reese Michael R.
RU2527048C2
METHOD FOR TRANSPORTING PIPES IN THE WELL DURING BORING, DEVICE FOR REALIZ ATION OF SAID METHOD AND PACKER FOR COMPACTING SAID PIPE 1999
  • Bakker Tomas Val'Burgis
RU2230170C2
SMALL-SIZED DRILLING RIG 2020
  • Rybkin Oleg Eduardovich
RU2762023C1
DOWNHOLE TOOL AND METHOD 2013
  • Simpson Nil Endryu Aberkrombi
RU2645043C2
METHOD OF WELL-DRILLING WITH SIMULTANEOUS CASE AND FACILITY FOR ITS IMPLEMENTATION 2007
  • Lipin Anatolij Alekseevich
  • Belousov Anatolij Vasil'Evich
  • Timonin Vladimir Vladimirovich
RU2338051C1
METHOD OF DRILLING WITH CASING PIPES, DRILLING RIG AND REDUCING PIECE 2005
  • Piipponen Jukha
RU2351735C1
SYSTEM FOR REINFORCING A SECTION OF WELL BOREHOLE 2002
  • Ehkkerlin Jorg Ehrnst
RU2293834C2

RU 2 120 020 C1

Authors

Jarvelja Jorma

Jarvelja Vesa

Dates

1998-10-10Published

1993-12-01Filed