公开(公告)号：US3217817A

公开(公告)日：1965-11-16

申请号：US25170163

申请日：1963-01-15

Applicant: HALLIBURTON CO

Inventor： MORRISETT O L ,  HYDE WALTER E

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US3139933A

公开(公告)日：1964-07-07

申请号：US24279362

申请日：1962-12-06

Applicant: GOLDEN RUBEN L

Inventor： GOLDEN RUBEN L

IPC: E21B4/10 ,  E21B31/00 ,  E21B31/113

CPC classification number: E21B4/10 ,  E21B31/005 ,  E21B31/113

公开(公告)号：US3087559A

公开(公告)日：1963-04-30

申请号：US80421059

申请日：1959-04-06

Applicant: HAZEN NORVAL F ,  THOMPSON RAYMOND E

Inventor： HAZEN NORVAL F ,  THOMPSON RAYMOND E

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US2987129A

公开(公告)日：1961-06-06

申请号：US80225359

申请日：1959-03-26

Applicant: HOUSTON ENGINEERS INC

Inventor： WEBB DERREL D

IPC: E21B31/113

CPC classification number: E21B31/113 ,  Y10S285/922

公开(公告)号：US2978030A

公开(公告)日：1961-04-04

申请号：US63464757

申请日：1957-01-17

Applicant: OTIS ENG CO

Inventor： GREEN WILLIAM G ,  WHITE MORRIS B ,  PRITCHARD VERNON M

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US2828822A

公开(公告)日：1958-04-01

申请号：US48496155

申请日：1955-01-31

Applicant: INDEPENDENT TOOL COMPANY

Inventor： GREER CECIL B

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US2801078A

公开(公告)日：1957-07-30

申请号：US35988253

申请日：1953-06-05

Applicant: HOUSTON OIL FIELD MAT CO INC

Inventor： MEDDERS WELDON L ,  FOREMAN JR ARNAL B

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US2344725A

公开(公告)日：1944-03-21

申请号：US34813840

申请日：1940-07-29

Applicant: S R BOWEN CO

Inventor： PHIPPS JOHN T

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US2265431A

公开(公告)日：1941-12-09

申请号：US25027039

申请日：1939-01-11

Applicant: ELDON PEEK J

Inventor： KERR RALPH L

IPC: E21B31/113

CPC classification number: E21B31/113

公开(公告)号：US20240133259A1

公开(公告)日：2024-04-25

申请号：US18049091

申请日：2022-10-23

Applicant: Saudi Arabian Oil Company

Inventor： Bandar S. Malki ,  Vitalii Chereshniuk

IPC: E21B31/113 ,  E21B31/00 ,  E21B33/14

CPC classification number: E21B31/113 ,  E21B31/002 ,  E21B33/14

Abstract: A well tool assembly includes a first well tool and a second well tool. The first well tool includes a first casing, a first drill bit and a drilling jar. The first drill bit is configured to drill through a subterranean zone to form a wellbore. The drilling jar is axially coupled to the casing uphole of the first drill bit. The drilling jar has an outer diameter that is greater than an outer diameter of the first casing. The second well tool has a second casing and a second drill bit. The second casing has an outer diameter that is smaller than an inner diameter of the drilling jar. The second drill bit has an outer diameter that is smaller than the inner diameter of the drilling jar.